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Brackman LC, Jung MS, Ogaga EI, Joshi N, Wroblewski LE, Piazuelo MB, Peek RM, Choksi YA, Algood HMS. IL-17RA-Mediated Epithelial Cell Activity Prevents Severe Inflammatory Response to Helicobacter pylori Infection. Immunohorizons 2024; 8:339-353. [PMID: 38639570 DOI: 10.4049/immunohorizons.2300078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 03/21/2024] [Indexed: 04/20/2024] Open
Abstract
Helicobacter pylori is a Gram-negative pathogen that colonizes the stomach, induces inflammation, and drives pathological changes in the stomach tissue, including gastric cancer. As the principal cytokine produced by Th17 cells, IL-17 mediates protective immunity against pathogens by inducing the activation and mobilization of neutrophils. Whereas IL-17A is largely produced by lymphocytes, the IL-17 receptor is expressed in epithelial cells, fibroblasts, and hematopoietic cells. Loss of the IL-17RA in mice results in impaired antimicrobial responses to extracellular bacteria. In the context of H. pylori infection, this is compounded by extensive inflammation in Il17ra-/- mice. In this study, Foxa3creIl17rafl/fl (Il17raΔGI-Epi) and Il17rafl/fl (control) mice were used to test the hypothesis that IL-17RA signaling, specifically in epithelial cells, protects against severe inflammation after H. pylori infection. The data indicate that Il17raΔGI-Epi mice develop increased inflammation compared with controls. Despite reduced Pigr expression, levels of IgA increased in the gastric wash, suggesting significant increase in Ag-specific activation of the T follicular helper/B cell axis. Gene expression analysis of stomach tissues indicate that both acute and chronic responses are significantly increased in Il17raΔGI-Epi mice compared with controls. These data suggest that a deficiency of IL-17RA in epithelial cells is sufficient to drive chronic inflammation and hyperactivation of the Th17/T follicular helper/B cell axis but is not required for recruitment of polymorphonuclear neutrophils. Furthermore, the data suggest that fibroblasts can produce chemokines in response to IL-17 and may contribute to H. pylori-induced inflammation through this pathway.
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Affiliation(s)
- Lee C Brackman
- Tennessee Valley Healthcare System, Department of Veterans Affairs, Nashville, TN
- Division of Infectious Disease, Department of Medicine, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN
| | - Matthew S Jung
- Tennessee Valley Healthcare System, Department of Veterans Affairs, Nashville, TN
- Division of Infectious Disease, Department of Medicine, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN
| | - Eseoghene I Ogaga
- Tennessee Valley Healthcare System, Department of Veterans Affairs, Nashville, TN
| | - Nikhita Joshi
- Tennessee Valley Healthcare System, Department of Veterans Affairs, Nashville, TN
- Vanderbilt University, School of Biological Sciences, Nashville, TN
| | - Lydia E Wroblewski
- Division of Gastroenterology, Department of Medicine, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN
| | - M Blanca Piazuelo
- Division of Gastroenterology, Department of Medicine, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN
| | - Richard M Peek
- Division of Gastroenterology, Department of Medicine, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN
| | - Yash A Choksi
- Tennessee Valley Healthcare System, Department of Veterans Affairs, Nashville, TN
- Division of Gastroenterology, Department of Medicine, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN
| | - Holly M Scott Algood
- Tennessee Valley Healthcare System, Department of Veterans Affairs, Nashville, TN
- Division of Infectious Disease, Department of Medicine, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN
- Vanderbilt Institute of Infection, Immunity, and Inflammation, Vanderbilt University Medical Center, Nashville, TN
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2
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Shuman JHB, Lin AS, Westland MD, Bryant KN, Piazuelo MB, Reyzer ML, Judd AM, McDonald WH, McClain MS, Schey KL, Algood HMS, Cover TL. Remodeling of the gastric environment in Helicobacter pylori-induced atrophic gastritis. mSystems 2024; 9:e0109823. [PMID: 38059647 PMCID: PMC10805037 DOI: 10.1128/msystems.01098-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 10/16/2023] [Indexed: 12/08/2023] Open
Abstract
Helicobacter pylori colonization of the human stomach is a strong risk factor for gastric cancer. To investigate H. pylori-induced gastric molecular alterations, we used a Mongolian gerbil model of gastric carcinogenesis. Histologic evaluation revealed varying levels of atrophic gastritis (a premalignant condition characterized by parietal and chief cell loss) in H. pylori-infected animals, and transcriptional profiling revealed a loss of markers for these cell types. We then assessed the spatial distribution and relative abundance of proteins in the gastric tissues using imaging mass spectrometry and liquid chromatography with tandem mass spectrometry. We detected striking differences in the protein content of corpus and antrum tissues. Four hundred ninety-two proteins were preferentially localized to the corpus in uninfected animals. The abundance of 91 of these proteins was reduced in H. pylori-infected corpus tissues exhibiting atrophic gastritis compared with infected corpus tissues exhibiting non-atrophic gastritis or uninfected corpus tissues; these included numerous proteins with metabolic functions. Fifty proteins localized to the corpus in uninfected animals were diffusely delocalized throughout the stomach in infected tissues with atrophic gastritis; these included numerous proteins with roles in protein processing. The corresponding alterations were not detected in animals infected with a H. pylori ∆cagT mutant (lacking Cag type IV secretion system activity). These results indicate that H. pylori can cause loss of proteins normally localized to the gastric corpus as well as diffuse delocalization of corpus-specific proteins, resulting in marked changes in the normal gastric molecular partitioning into distinct corpus and antrum regions.IMPORTANCEA normal stomach is organized into distinct regions known as the corpus and antrum, which have different functions, cell types, and gland architectures. Previous studies have primarily used histologic methods to differentiate these regions and detect H. pylori-induced alterations leading to stomach cancer. In this study, we investigated H. pylori-induced gastric molecular alterations in a Mongolian gerbil model of carcinogenesis. We report the detection of numerous proteins that are preferentially localized to the gastric corpus but not the antrum in a normal stomach. We show that stomachs with H. pylori-induced atrophic gastritis (a precancerous condition characterized by the loss of specialized cell types) exhibit marked changes in the abundance and localization of proteins normally localized to the gastric corpus. These results provide new insights into H. pylori-induced gastric molecular alterations that are associated with the development of stomach cancer.
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Affiliation(s)
- Jennifer H. B. Shuman
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Aung Soe Lin
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Mandy D. Westland
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Kaeli N. Bryant
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - M. Blanca Piazuelo
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Michelle L. Reyzer
- Mass Spectrometry Research Center, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Audra M. Judd
- Mass Spectrometry Research Center, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - W. Hayes McDonald
- Mass Spectrometry Research Center, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Mark S. McClain
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
- Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Kevin L. Schey
- Mass Spectrometry Research Center, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Holly M. S. Algood
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
- Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Veterans Affairs Tennessee Valley Healthcare System, Nashville, Tennessee, USA
| | - Timothy L. Cover
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
- Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Veterans Affairs Tennessee Valley Healthcare System, Nashville, Tennessee, USA
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3
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Brackman LC, Dixon BREA, Bernard M, Revetta F, Cowell RP, Meenderink LM, Washington MK, Piazuelo MB, Algood HMS. IL-17 receptor A functions to help maintain barrier integrity and limit activation of immunopathogenic response to H. pylori infection. Infect Immun 2024; 92:e0029223. [PMID: 38014948 PMCID: PMC10790819 DOI: 10.1128/iai.00292-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 10/29/2023] [Indexed: 11/29/2023] Open
Abstract
Activation of Th17 cell responses, including the production of IL-17A and IL-21, contributes to host defense and inflammatory responses by coordinating adaptive and innate immune responses. IL-17A and IL-17F signal through a multimeric receptor, which includes the IL-17 receptor A (IL-17RA) subunit and the IL-17RC subunit. IL-17RA is expressed by many cell types, and data from previous studies suggest that loss of IL-17 receptor is required to limit immunopathology in the Helicobacter pylori model of infection. Here, an Il17ra-/- mouse was generated on the FVB/n background, and the role of IL-17 signaling in the maintenance of barrier responses to H. pylori was investigated. Generating the Il17ra-/- on the FVB/n background allowed for the examination of responses in the paragastric lymph node and will allow for future investigation into carcinogenesis. While uninfected Il17ra-/- mice do not develop spontaneous gastritis following H. pylori infection, Il17ra-/- mice develop severe gastric inflammation accompanied by lymphoid follicle production and exacerbated production of Th17 cytokines. Increased inflammation in the tissue, increased IgA levels in the lumen, and reduced production of Muc5ac in the corpus correlate with increased H. pylori-induced paragastric lymph node activation. These data suggest that the cross talk between immune cells and epithelial cells regulates mucin production, IgA production, and translocation, impacting the integrity of the gastric mucosa and therefore activating of the adaptive immune response.
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Affiliation(s)
- Lee C. Brackman
- Division of Infectious Disease, Department of Medicine, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Beverly R. E. A. Dixon
- Division of Infectious Disease, Department of Medicine, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Margaret Bernard
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee, USA
| | - Frank Revetta
- Division of Gastroenterology, Department of Medicine, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Rebecca P. Cowell
- Division of Infectious Disease, Department of Medicine, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Leslie M. Meenderink
- Division of Infectious Disease, Department of Medicine, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee, USA
| | - M. Kay Washington
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - M. Blanca Piazuelo
- Division of Gastroenterology, Department of Medicine, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Vanderbilt Institute of Infection, Immunity, and Inflammation (VI4), Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Holly M. Scott Algood
- Division of Infectious Disease, Department of Medicine, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee, USA
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Vanderbilt Institute of Infection, Immunity, and Inflammation (VI4), Vanderbilt University Medical Center, Nashville, Tennessee, USA
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4
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Lunger C, Shen Z, Holcombe H, Mannion AJ, Dzink-Fox J, Kurnick S, Feng Y, Muthupalani S, Carrasco SE, Wilson KT, Peek RM, Piazuelo MB, Morgan DR, Armijo AL, Mammoliti M, Wang TC, Fox JG. Gastric coinfection with thiopeptide-positive Cutibacterium acnes decreases FOXM1 and pro-inflammatory biomarker expression in a murine model of Helicobacter pylori-induced gastric cancer. Microbiol Spectr 2024; 12:e0345023. [PMID: 38014984 PMCID: PMC10783005 DOI: 10.1128/spectrum.03450-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 10/19/2023] [Indexed: 11/29/2023] Open
Abstract
IMPORTANCE H. pylori infects half of the world population and is the leading cause of gastric cancer. We previously demonstrated that gastric cancer risk is associated with gastric microbiota. Specifically, gastric urease-positive Staphylococcus epidermidis and Streptococcus salivarius had contrasting effects on H. pylori-associated gastric pathology and immune responses in germ-free INS-GAS mice. As gastritis progresses to gastric cancer, the oncogenic transcription factor Foxm1 becomes increasingly expressed. In this study, we evaluated the gastric commensal C. acnes, certain strains of which produce thiopeptides that directly inhibit FOXM1. Thiopeptide-positive C. acnes was isolated from Nicaraguan patient gastric biopsies and inoculated into germ-free INS-GAS mice with H. pylori. We, therefore, asked whether coinfection with C. acnes expressing thiopeptide and H. pylori would decrease gastric Foxm1 expression and pro-inflammatory cytokine mRNA and protein levels. Our study supports the growing literature that specific non-H. pylori gastric bacteria affect inflammatory and cancer biomarkers in H. pylori pathogenesis.
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Affiliation(s)
- Courtney Lunger
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Zeli Shen
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Hilda Holcombe
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Anthony J. Mannion
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - JoAnn Dzink-Fox
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Susanna Kurnick
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Yan Feng
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Sureshkumar Muthupalani
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Sebastian E. Carrasco
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Keith T. Wilson
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Richard M. Peek
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - M. Blanca Piazuelo
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Douglas R. Morgan
- Division of Gastroenterology and Hepatology, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Amanda L. Armijo
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Melissa Mammoliti
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Timothy C. Wang
- Division of Gastroenterology and Irvine Cancer Research Center, Columbia University, New York, New York, USA
| | - James G. Fox
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
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5
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Zhu S, Soutto M, Chen Z, Piazuelo MB, Washington MK, Belkhiri A, Zaika A, Peng D, El-Rifai W. Correction: Activation of IGF1R by DARPP-32 promotes STAT3 signaling in gastric cancer cells. Oncogene 2024; 43:224. [PMID: 38081964 DOI: 10.1038/s41388-023-02916-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2024]
Affiliation(s)
- Shoumin Zhu
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Mohammed Soutto
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
- Department of Veterans Affairs, Miami Healthcare System, Miami, FL, USA
| | - Zheng Chen
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - M Blanca Piazuelo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M Kay Washington
- Department of Pathology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Abbes Belkhiri
- Department of Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Alexander Zaika
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
- Department of Veterans Affairs, Miami Healthcare System, Miami, FL, USA
- Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA
| | - Dunfa Peng
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Wael El-Rifai
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.
- Department of Veterans Affairs, Miami Healthcare System, Miami, FL, USA.
- Sylvester Comprehensive Cancer Center, University of Miami, Miami, FL, USA.
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6
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Latour YL, McNamara KM, Allaman MM, Barry DP, Smith TM, Asim M, Williams KJ, Hawkins CV, Jacobse J, Goettel JA, Delgado AG, Piazuelo MB, Washington MK, Gobert AP, Wilson KT. Myeloid deletion of talin-1 reduces mucosal macrophages and protects mice from colonic inflammation. Sci Rep 2023; 13:22368. [PMID: 38102166 PMCID: PMC10724268 DOI: 10.1038/s41598-023-49614-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 12/10/2023] [Indexed: 12/17/2023] Open
Abstract
The intestinal immune response is crucial in maintaining a healthy gut, but the enhanced migration of macrophages in response to pathogens is a major contributor to disease pathogenesis. Integrins are ubiquitously expressed cellular receptors that are highly involved in immune cell adhesion to endothelial cells while in the circulation and help facilitate extravasation into tissues. Here we show that specific deletion of the Tln1 gene encoding the protein talin-1, an integrin-activating scaffold protein, from cells of the myeloid lineage using the Lyz2-cre driver mouse reduces epithelial damage, attenuates colitis, downregulates the expression of macrophage markers, decreases the number of differentiated colonic mucosal macrophages, and diminishes the presence of CD68-positive cells in the colonic mucosa of mice infected with the enteric pathogen Citrobacter rodentium. Bone marrow-derived macrophages lacking expression of Tln1 did not exhibit a cell-autonomous phenotype; there was no impaired proinflammatory gene expression, nitric oxide production, phagocytic ability, or surface expression of CD11b, CD86, or major histocompatibility complex II in response to C. rodentium. Thus, we demonstrate that talin-1 plays a role in the manifestation of infectious colitis by increasing mucosal macrophages, with an effect that is independent of macrophage activation.
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Affiliation(s)
- Yvonne L Latour
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, 2215B Garland Ave., 1030C MRB IV, Nashville, TN, 37232-0252, USA
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Kara M McNamara
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Margaret M Allaman
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Daniel P Barry
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Thaddeus M Smith
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Mohammad Asim
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Kamery J Williams
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Caroline V Hawkins
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Justin Jacobse
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, 2215B Garland Ave., 1030C MRB IV, Nashville, TN, 37232-0252, USA
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Jeremy A Goettel
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, 2215B Garland Ave., 1030C MRB IV, Nashville, TN, 37232-0252, USA
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Alberto G Delgado
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M Kay Washington
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, 2215B Garland Ave., 1030C MRB IV, Nashville, TN, 37232-0252, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Alain P Gobert
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Keith T Wilson
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, 2215B Garland Ave., 1030C MRB IV, Nashville, TN, 37232-0252, USA.
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.
- Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN, USA.
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA.
- Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA.
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7
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Jung MS, Piazuelo MB, Brackman LC, McClain MS, Algood HMS. Essential role of Helicobacter pylori apolipoprotein N-acyltransferase (Lnt) in stomach colonization. Infect Immun 2023; 91:e0036923. [PMID: 37937999 PMCID: PMC10715074 DOI: 10.1128/iai.00369-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 10/17/2023] [Indexed: 11/09/2023] Open
Abstract
Bacterial lipoproteins are post-translationally modified with acyl chains, anchoring these proteins to bacterial membranes. In Gram-negative bacteria, three enzymes complete the modifications. Lgt (which adds two acyl chains) and LspA (which removes the signal peptide) are essential. Lnt (which adds a third acyl chain) is not essential in certain bacteria including Francisella tularensis, Neisseria gonorrhoeae, and Acinetobacter baumannii. Deleting lnt results in mild to severe physiologic changes. We previously showed lnt is not essential for Helicobacter pylori growth in vitro. Here, the physiologic consequences of deleting lnt in H. pylori and the role of Lnt in the host response to H. pylori were examined using in vitro and in vivo models. Comparing wild-type, Δlnt, and complemented mutant H. pylori, no changes in growth rates or sensitivity to acid or antibiotics were observed. Since deleting lnt changes the number of acyl chains on lipoproteins and the number of acyl chains on lipoproteins impacts the innate immune response through Toll-like receptor 2 (TLR2) signaling, primary human gastric epithelial cells were treated with a purified lipoprotein from wild-type or lnt mutant H. pylori. Differential gene expression analysis indicated that lipoprotein from the lnt mutant induced a more robust TLR2 response. In a complementary approach, we infected wild-type and Tlr2-/- mice and found that both the wild-type and complemented mutant strains successfully colonized the animals. However, the lnt mutant strain was unable to colonize either mouse strain. These results show that lnt is essential for H. pylori colonization and identifies lipoprotein synthesis as a target for therapeutic intervention.
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Affiliation(s)
- Matthew S. Jung
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - M. Blanca Piazuelo
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Lee C. Brackman
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Mark S. McClain
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
- Vanderbilt Institute for Infection Immunology and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Holly M. Scott Algood
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
- Vanderbilt Institute for Infection Immunology and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
- Vanderbilt Center for Immunobiology, Vanderbilt Medical Center, Nashville, Tennessee, USA
- Veterans Affairs Tennessee Valley Healthcare System, Nashville, Tennessee, USA
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8
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Shah SC, Boeder S, Piazuelo MB, Li D. The Stomach Looks Suspicious, But Is It Pernicious? Gastroenterology 2023; 165:1342-1351. [PMID: 37640254 DOI: 10.1053/j.gastro.2023.08.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/18/2023] [Accepted: 08/18/2023] [Indexed: 08/31/2023]
Affiliation(s)
- Shailja C Shah
- Gastroenterology Section, Jennifer Moreno Department of Veterans Affairs Medical Center, La Jolla, California; Division of Gastroenterology, University of California, San Diego, La Jolla, California.
| | - Schafer Boeder
- Division of Endocrinology and Metabolism, University of California, San Diego, La Jolla, California
| | - M Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Dan Li
- Department of Gastroenterology, Kaiser Permanente Northern California, Santa Clara, California; Division of Research, Kaiser Permanente Northern California, Oakland, California
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9
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Noto JM, Piazuelo MB, Romero-Gallo J, Delgado AG, Suarez G, Akritidou K, Girod Hoffman M, Roa JC, Taylor CT, Peek RM. Targeting hypoxia-inducible factor-1 alpha suppresses Helicobacter pylori-induced gastric injury via attenuation of both cag-mediated microbial virulence and proinflammatory host responses. Gut Microbes 2023; 15:2263936. [PMID: 37828903 PMCID: PMC10578190 DOI: 10.1080/19490976.2023.2263936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 09/24/2023] [Indexed: 10/14/2023] Open
Abstract
Helicobacter pylori-induced inflammation is the strongest known risk factor for gastric adenocarcinoma. Hypoxia-inducible factor-1 (HIF-1α) is a key transcriptional regulator of immunity and carcinogenesis. To examine the role of this mediator within the context of H. pylori-induced injury, we first demonstrated that HIF-1α levels were significantly increased in parallel with the severity of gastric lesions in humans. In interventional studies targeting HIF-1α, H. pylori-infected mice were treated ± dimethyloxalylglycine (DMOG), a prolyl hydroxylase inhibitor that stabilizes HIF-1α. H. pylori significantly increased proinflammatory chemokines/cytokines and inflammation in vehicle-treated mice; however, this was significantly attenuated in DMOG-treated mice. DMOG treatment also significantly decreased function of the H. pylori type IV secretion system (T4SS) in vivo and significantly reduced T4SS-mediated NF-κB activation and IL-8 induction in vitro. These results suggest that prolyl hydroxylase inhibition protects against H. pylori-mediated pathologic responses, and is mediated, in part, via attenuation of H. pylori cag-mediated virulence and suppression of host proinflammatory responses.
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Affiliation(s)
- Jennifer M. Noto
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M. Blanca Piazuelo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Judith Romero-Gallo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Alberto G. Delgado
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Giovanni Suarez
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | | | | | - Juan Carlos Roa
- Department of Pathology, School of Medicine, Center for Cancer Prevention and Control (CECAN), Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - Cormac T. Taylor
- School of Medicine, Systems Biology Ireland and The Conway Institute, University College Dublin, Dublin, Ireland
| | - Richard M. Peek
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
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10
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Hoek KL, McClanahan KG, Latour YL, Shealy N, Piazuelo MB, Vallance BA, Byndloss MX, Wilson KT, Olivares-Villagómez D. Turicibacterales protect mice from severe Citrobacter rodentium infection. Infect Immun 2023; 91:e0032223. [PMID: 37800916 PMCID: PMC10652940 DOI: 10.1128/iai.00322-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 08/21/2023] [Indexed: 10/07/2023] Open
Abstract
One of the major contributors to child mortality in the world is diarrheal diseases, with an estimated 800,000 deaths per year. Many pathogens are causative agents of these illnesses, including the enteropathogenic or enterohemorrhagic forms of Escherichia coli. These bacteria are characterized by their ability to cause attaching and effacing lesions in the gut mucosa. Although much has been learned about the pathogenicity of these organisms and the immune response against them, the role of the intestinal microbiota during these infections is not well characterized. Infection of mice with E. coli requires pre-treatment with antibiotics in most mouse models, which hinders the study of the microbiota in an undisturbed environment. Using Citrobacter rodentium as a murine model for attaching and effacing bacteria, we show that C57BL/6 mice deficient in granzyme B expression are highly susceptible to severe disease caused by C. rodentium infection. Although a previous publication from our group shows that granzyme B-deficient CD4+ T cells are partially responsible for this phenotype, in this report, we present data demonstrating that the microbiota, in particular members of the order Turicibacterales, have an important role in conferring resistance. Mice deficient in Turicibacter sanguinis have increased susceptibility to severe disease. However, when these mice are co-housed with resistant mice or colonized with T. sanguinis, susceptibility to severe infection is reduced. These results clearly suggest a critical role for this commensal in the protection against enteropathogens.
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Affiliation(s)
- Kristen L. Hoek
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Kathleen G. McClanahan
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Yvonne L. Latour
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Nicolas Shealy
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - M. Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Bruce A. Vallance
- Department of Pediatrics, BC Children’s Hospital, University of British Columbia, Vancouver, British Columbia, Canada
| | - Mariana X. Byndloss
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Vanderbilt Institute of Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Vanderbilt Microbiome Innovation Center, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Keith T. Wilson
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Veternas Affairs Tennessee Valley Healthcare System, Nashville, Tennessee, USA
| | - Danyvid Olivares-Villagómez
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Vanderbilt Institute of Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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11
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Riquelme A, Abnet CC, Goodman KJ, Piazuelo MB, Ruiz-Garcia E, de Assumpção PP, Camargo MC. Recommendations for gastric cancer prevention and control in the Americas. Lancet Reg Health Am 2023; 27:100608. [PMID: 37840576 PMCID: PMC10568298 DOI: 10.1016/j.lana.2023.100608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 09/19/2023] [Indexed: 10/17/2023]
Affiliation(s)
- Arnoldo Riquelme
- Facultad de Medicina, Departamento de Gastroenterología, Pontificia Universidad Católica de Chile, Santiago, Chile
- Centro para la Prevención y el Control del Cáncer, Santiago, Chile
| | - Christian C. Abnet
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland, United States
| | - Karen J. Goodman
- Faculty of Medicine and Dentistry, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - M. Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, United States
| | - Erika Ruiz-Garcia
- Gastrointestinal Cancer Department and Translational Medicine Laboratory, Instituto Nacional de Cancerología, Mexico City, Mexico
| | | | - M. Constanza Camargo
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland, United States
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12
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Gobert AP, Smith TM, Latour YL, Asim M, Barry DP, Allaman MM, Williams KJ, McNamara KM, Delgado AG, Short SP, Mirmira RG, Rose KL, Schey KL, Zagol-Ikapitte I, Coleman JS, Boutaud O, Zhao S, Piazuelo MB, Washington MK, Coburn LA, Wilson KT. Hypusination Maintains Intestinal Homeostasis and Prevents Colitis and Carcinogenesis by Enhancing Aldehyde Detoxification. Gastroenterology 2023; 165:656-669.e8. [PMID: 37271289 PMCID: PMC10527201 DOI: 10.1053/j.gastro.2023.05.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 04/19/2023] [Accepted: 05/25/2023] [Indexed: 06/06/2023]
Abstract
BACKGROUND & AIMS The amino acid hypusine, synthesized from the polyamine spermidine by the enzyme deoxyhypusine synthase (DHPS), is essential for the activity of eukaryotic translation initiation factor 5A (EIF5A). The role of hypusinated EIF5A (EIF5AHyp) remains unknown in intestinal homeostasis. Our aim was to investigate EIF5AHyp in the gut epithelium in inflammation and carcinogenesis. METHODS We used human colon tissue messenger RNA samples and publicly available transcriptomic datasets, tissue microarrays, and patient-derived colon organoids. Mice with intestinal epithelial-specific deletion of Dhps were investigated at baseline and in models of colitis and colon carcinogenesis. RESULTS We found that patients with ulcerative colitis and Crohn's disease exhibit reduced colon levels of DHPS messenger RNA and DHPS protein and reduced levels of EIF5AHyp. Similarly, colonic organoids from colitis patients also show down-regulated DHPS expression. Mice with intestinal epithelial-specific deletion of Dhps develop spontaneous colon hyperplasia, epithelial proliferation, crypt distortion, and inflammation. Furthermore, these mice are highly susceptible to experimental colitis and show exacerbated colon tumorigenesis when treated with a carcinogen. Transcriptomic and proteomic analysis on colonic epithelial cells demonstrated that loss of hypusination induces multiple pathways related to cancer and immune response. Moreover, we found that hypusination enhances translation of numerous enzymes involved in aldehyde detoxification, including glutathione S-transferases and aldehyde dehydrogenases. Accordingly, hypusination-deficient mice exhibit increased levels of aldehyde adducts in the colon, and their treatment with a scavenger of electrophiles reduces colitis. CONCLUSIONS Hypusination in intestinal epithelial cells has a key role in the prevention of colitis and colorectal cancer, and enhancement of this pathway via supplementation of spermidine could have a therapeutic impact.
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Affiliation(s)
- Alain P Gobert
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee; Program in Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee.
| | - Thaddeus M Smith
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Yvonne L Latour
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Mohammad Asim
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Daniel P Barry
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Margaret M Allaman
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Kamery J Williams
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Kara M McNamara
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Program in Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Alberto G Delgado
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Sarah P Short
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Raghavendra G Mirmira
- Kovler Diabetes Center, Department of Medicine, The University of Chicago, Chicago, Illinois
| | - Kristie L Rose
- Department of Biochemistry, Mass Spectrometry Research Center, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Kevin L Schey
- Department of Biochemistry, Mass Spectrometry Research Center, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Irene Zagol-Ikapitte
- Warren Center for Neuroscience Drug Discovery, Vanderbilt University, Nashville, Tennessee; Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Jeremy S Coleman
- Warren Center for Neuroscience Drug Discovery, Vanderbilt University, Nashville, Tennessee; Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Olivier Boutaud
- Warren Center for Neuroscience Drug Discovery, Vanderbilt University, Nashville, Tennessee; Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Shilin Zhao
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - M Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee
| | - M Kay Washington
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee; Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Lori A Coburn
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee; Program in Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee; Veterans Affairs Tennessee Valley Healthcare System, Nashville, Tennessee
| | - Keith T Wilson
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee; Program in Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee; Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee; Veterans Affairs Tennessee Valley Healthcare System, Nashville, Tennessee.
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13
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Gobert AP, Asim M, Smith TM, Williams KJ, Barry DP, Allaman MM, McNamara KM, Hawkins CV, Delgado AG, Zhao S, Piazuelo MB, Washington MK, Coburn LA, Rathmacher JA, Wilson KT. Electrophilic reactive aldehydes as a therapeutic target in colorectal cancer prevention and treatment. Oncogene 2023; 42:1685-1691. [PMID: 37037901 PMCID: PMC10182918 DOI: 10.1038/s41388-023-02691-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/28/2023] [Accepted: 03/29/2023] [Indexed: 04/12/2023]
Abstract
Colorectal cancer (CRC) is a major health problem worldwide. Dicarbonyl electrophiles, such as isolevuglandins (isoLGs), are generated from lipid peroxidation and form covalent adducts with amine-containing macromolecules. We have shown high levels of adducts of isoLGs in colonic epithelial cells of patients with CRC. We thus investigated the role of these reactive aldehydes in colorectal cancer development. We found that 2-hydroxybenzylamine (2-HOBA), a natural compound derived from buckwheat seeds that acts as a potent scavenger of electrophiles, is bioavailable in the colon of mice after supplementation in the drinking water and does not affect the colonic microbiome. 2-HOBA reduced the level of isoLG adducts to lysine as well as tumorigenesis in models of colitis-associated carcinogenesis and of sporadic CRC driven by specific deletion of the adenomatous polyposis coli gene in colonic epithelial cells. In parallel, we found that oncogenic NRF2 activation and signaling were decreased in the colon of 2-HOBA-treated mice. Additionally, the growth of xenografted human HCT116 CRC cells in nude mice was significantly attenuated by 2-HOBA supplementation. In conclusion, 2-HOBA represents a promising natural compound for the prevention and treatment of CRC.
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Affiliation(s)
- Alain P Gobert
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Mohammad Asim
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Thaddeus M Smith
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Kamery J Williams
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Daniel P Barry
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Margaret M Allaman
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Kara M McNamara
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Program in Cancer Biology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Caroline V Hawkins
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Alberto G Delgado
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Shilin Zhao
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M Kay Washington
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Lori A Coburn
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
- Program in Cancer Biology, Vanderbilt University Medical Center, Nashville, TN, USA
- Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA
| | - John A Rathmacher
- MTI BioTech Inc., Iowa State University Research Park, Ames, IA, USA
- Department of Animal Science, Iowa State University, Ames, IA, USA
| | - Keith T Wilson
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA.
- Program in Cancer Biology, Vanderbilt University Medical Center, Nashville, TN, USA.
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA.
- Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA.
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14
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Hoek KL, McClanahan KG, Latour YL, Shealy N, Piazuelo MB, Vallance BA, Byndloss MX, Wilson KT, Olivares-Villagómez D. Turicibacterales protect mice from severe Citrobacter rodentium infection. bioRxiv 2023:2023.04.25.538270. [PMID: 37163036 PMCID: PMC10168287 DOI: 10.1101/2023.04.25.538270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
One of the major contributors to child mortality in the world is diarrheal diseases, with an estimated 800,000 deaths per year. Many pathogens are causative agents of these illnesses, including the enteropathogenic (EPEC) or enterohemorrhagic (EHEC) forms of Escherichia coli. These bacteria are characterized by their ability to cause attaching and effacing lesions in the gut mucosa. Although much has been learned about the pathogenicity of these organisms and the immune response against them, the role of the intestinal microbiota during these infections is not well characterized. Infection of mice with E. coli requires pre-treatment with antibiotics in most mouse models, which hinders the study of the microbiota in an undisturbed environment. Using Citrobacter rodentium as a murine model for attaching and effacing bacteria, we show that C57BL/6 mice deficient in granzyme B expression are highly susceptible to severe disease caused by C. rodentium infection. Although a previous publication from our group shows that granzyme B-deficient CD4+ T cells are partially responsible for this phenotype, in this report we present data demonstrating that the microbiota, in particular members of the order Turicibacterales, have an important role in conferring resistance. Mice deficient in Turicibacter sanguinis have increased susceptibility to severe disease. However, when these mice are co-housed with resistant mice, or colonized with T. sanguinis, susceptibility to severe infection is reduced. These results clearly suggest a critical role for this commensal in the protection against entero-pathogens.
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Affiliation(s)
- Kristen L. Hoek
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Kathleen G. McClanahan
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Yvonne L. Latour
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Nicolas Shealy
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M. Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Bruce A. Vallance
- Department of Pediatrics, BC Children’s Hospital, University of British Columbia, Vancouver, BC, Canada
| | - Mariana X. Byndloss
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
- Vanderbilt Institute of Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, TN, USA
- Vanderbilt Microbiome Innovation Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Keith T. Wilson
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
- Veternas Affairs Tennessee Valley Healthcare System, Nashville, TN, USA
| | - Danyvid Olivares-Villagómez
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
- Vanderbilt Institute of Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, TN, USA
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15
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Piazuelo MB, Carneiro F, Camargo MC. Considerations in comparing intestinal- and diffuse-type gastric adenocarcinomas. Helicobacter 2023; 28:e12975. [PMID: 36965033 DOI: 10.1111/hel.12975] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 03/05/2023] [Accepted: 03/09/2023] [Indexed: 03/27/2023]
Affiliation(s)
- M Blanca Piazuelo
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Fatima Carneiro
- Faculdade de Medicina da Universidade do Porto (FMUP), Centro Hospitalar Universitário de São João (CHUSJ), Instituto de Investigação e Inovação em Saúde (i3S), Instituto de Patologia e Imunologia Molecular da Universidade do Porto (IPATIMUP), Porto, Portugal
| | - M Constanza Camargo
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
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16
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Gobert AP, Asim M, Smith TM, Williams KJ, Barry DP, Allaman MM, McNamara KM, Hawkins CV, Delgado AG, Piazuelo MB, Rathmacher JA, Wilson KT. The nutraceutical electrophile scavenger 2-hydroxybenzylamine (2-HOBA) attenuates gastric cancer development caused by Helicobacter pylori. Biomed Pharmacother 2023; 158:114092. [PMID: 36493697 PMCID: PMC9879697 DOI: 10.1016/j.biopha.2022.114092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 11/22/2022] [Accepted: 12/04/2022] [Indexed: 12/12/2022] Open
Abstract
Stomach cancer is a leading cause of cancer death. Helicobacter pylori is a bacterial gastric pathogen that is the primary risk factor for carcinogenesis, associated with its induction of inflammation and DNA damage. Dicarbonyl electrophiles are generated from lipid peroxidation during the inflammatory response and form covalent adducts with amine-containing macromolecules. 2-hydroxybenzylamine (2-HOBA) is a natural compound derived from buckwheat seeds and acts as a potent scavenger of reactive aldehydes. Our goal was to investigate the effect of 2-HOBA on the pathogenesis of H. pylori infection. We used transgenic FVB/N insulin-gastrin (INS-GAS) mice as a model of gastric cancer. First, we found that 2-HOBA is bioavailable in the gastric tissues of these mice after supplementation in the drinking water. Moreover, 2-HOBA reduced the development of gastritis in H. pylori-infected INS-GAS mice without affecting the bacterial colonization level in the stomach. Further, we show that the development of gastric dysplasia and carcinoma was significantly reduced by 2-HOBA. Concomitantly, DNA damage were also inhibited by 2-HOBA treatment in H. pylori-infected mice. In parallel, DNA damage was inhibited by 2-HOBA in H. pylori-infected gastric epithelial cells in vitro. In conclusion, 2-HOBA, which has been shown to be safe in human clinical trials, represents a promising nutritional compound for the chemoprevention of the more severe effects of H. pylori infection.
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Affiliation(s)
- Alain P. Gobert
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Mohammad Asim
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Thaddeus M. Smith
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Kamery J. Williams
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Daniel P. Barry
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Margaret M. Allaman
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Kara M. McNamara
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA,Program in Cancer Biology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Caroline V. Hawkins
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Alberto G. Delgado
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M. Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - John A. Rathmacher
- MTI BioTech, Iowa State University Research Park, Ames, IA, USA,Department of Animal Science, Iowa State University, Ames, IA, USA
| | - Keith T. Wilson
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA,Program in Cancer Biology, Vanderbilt University Medical Center, Nashville, TN, USA,Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA,Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA,Correspondence to: Vanderbilt University Medical Center, 2215B Garland Ave., 1030C MRB IV, Nashville, TN 37232-0252, USA. (K.T. Wilson)
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17
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Latour YL, Allaman MM, Barry DP, Smith TM, Williams KJ, McNamara KM, Jacobse J, Goettel JA, Delgado AG, Piazuelo MB, Zhao S, Gobert AP, Wilson KT. Epithelial talin-1 protects mice from citrobacter rodentium-induced colitis by restricting bacterial crypt intrusion and enhancing t cell immunity. Gut Microbes 2023; 15:2192623. [PMID: 36951501 PMCID: PMC10038039 DOI: 10.1080/19490976.2023.2192623] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/24/2023] Open
Abstract
Pathogenic enteric Escherichia coli present a significant burden to global health. Food-borne enteropathogenic E. coli (EPEC) and Shiga toxin-producing E. coli (STEC) utilize attaching and effacing (A/E) lesions and actin-dense pedestal formation to colonize the gastrointestinal tract. Talin-1 is a large structural protein that links the actin cytoskeleton to the extracellular matrix though direct influence on integrins. Here we show that mice lacking talin-1 in intestinal epithelial cells (Tln1Δepi) have heightened susceptibility to colonic disease caused by the A/E murine pathogen Citrobacter rodentium. Tln1Δepi mice exhibit decreased survival, and increased colonization, colon weight, and histologic colitis compared to littermate Tln1fl/fl controls. These findings were associated with decreased actin polymerization and increased infiltration of innate myeloperoxidase-expressing immune cells, confirmed as neutrophils by flow cytometry, but more bacterial dissemination deep into colonic crypts. Further evaluation of the immune population recruited to the mucosa in response to C. rodentium revealed that loss of Tln1 in colonic epithelial cells (CECs) results in impaired recruitment and activation of T cells. C. rodentium infection-induced colonic mucosal hyperplasia was exacerbated in Tln1Δepi mice compared to littermate controls. We demonstrate that this is associated with decreased CEC apoptosis and crowding of proliferating cells in the base of the glands. Taken together, talin-1 expression by CECs is important in the regulation of both epithelial renewal and the inflammatory T cell response in the setting of colitis caused by C. rodentium, suggesting that this protein functions in CECs to limit, rather than contribute to the pathogenesis of this enteric infection.
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Affiliation(s)
- Yvonne L Latour
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Margaret M Allaman
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Daniel P Barry
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Thaddeus M Smith
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Kamery J Williams
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Kara M McNamara
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Justin Jacobse
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Jeremy A Goettel
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Alberto G Delgado
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Shilin Zhao
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Alain P Gobert
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Keith T Wilson
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
- Medical Service, Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA
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18
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Mannion A, Sheh A, Shen Z, Dzink-Fox J, Piazuelo MB, Wilson KT, Peek R, Fox JG. Shotgun Metagenomics of Gastric Biopsies Reveals Compositional and Functional Microbiome Shifts in High- and Low-Gastric-Cancer-Risk Populations from Colombia, South America. Gut Microbes 2023; 15:2186677. [PMID: 36907988 PMCID: PMC10026914 DOI: 10.1080/19490976.2023.2186677] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 02/27/2023] [Indexed: 03/14/2023] Open
Abstract
Along with Helicobacter pylori infection, the gastric microbiota is hypothesized to modulate stomach cancer risk in susceptible individuals. Whole metagenomic shotgun sequencing (WMS) is a sequencing approach to characterize the microbiome with advantages over traditional culture and 16S rRNA sequencing including identification of bacterial and non-bacterial taxa, species/strain resolution, and functional characterization of the microbiota. In this study, we used WMS to survey the microbiome in extracted DNA from antral gastric biopsy samples from Colombian patients residing in the high-risk gastric cancer town Túquerres (n = 10, H. pylori-positive = 7) and low-risk town of Tumaco (n = 10, H. pylori-positive = 6). Kraken2/Bracken was used for taxonomic classification and abundance. Functional gene profiles were inferred by InterProScan and KEGG analysis of assembled contigs and gene annotation. The most abundant taxa represented bacteria, non-human eukaryota, and viral genera found in skin, oral, food, and plant/soil environments including Staphylococus, Streptococcus, Bacillus, Aspergillus, and Siphoviridae. H. pylori was the predominant taxa present in H. pylori-positive samples. Beta diversity was significantly different based on H. pylori-status, risk group, and sex. WMS detected more bacterial taxa than 16S rRNA sequencing and aerobic, anaerobic, and microaerobic culture performed on the same gastric biopsy samples. WMS identified significant differences in functional profiles found between H. pylori-status, but not risk or sex groups. H. pylori-positive samples were significantly enriched for H. pylori-specific genes including virulence factors such as vacA, cagA, and urease, while carbohydrate and amino acid metabolism genes were enriched in H. pylori-negative samples. This study shows WMS has the potential to characterize the taxonomy and function of the gastric microbiome as risk factors for H. pylori-associated gastric disease. Future studies will be needed to compare and validate WMS versus traditional culture and 16S rRNA sequencing approaches for characterization of the gastric microbiome.
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Affiliation(s)
- Anthony Mannion
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Alexander Sheh
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Zeli Shen
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - JoAnn Dzink-Fox
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - M. Blanca Piazuelo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Keith T Wilson
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Richard Peek
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - James G. Fox
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
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19
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Latour YL, Sierra JC, McNamara KM, Smith TM, Luis PB, Schneider C, Delgado AG, Barry DP, Allaman MM, Calcutt MW, Schey KL, Piazuelo MB, Gobert AP, Wilson KT. Ornithine Decarboxylase in Gastric Epithelial Cells Promotes the Immunopathogenesis of Helicobacter pylori Infection. J Immunol 2022; 209:796-805. [PMID: 35896340 PMCID: PMC9378675 DOI: 10.4049/jimmunol.2100795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 06/06/2022] [Indexed: 01/04/2023]
Abstract
Colonization by Helicobacter pylori is associated with gastric diseases, ranging from superficial gastritis to more severe pathologies, including intestinal metaplasia and adenocarcinoma. The interplay of the host response and the pathogen affect the outcome of disease. One major component of the mucosal response to H. pylori is the activation of a strong but inefficient immune response that fails to control the infection and frequently causes tissue damage. We have shown that polyamines can regulate H. pylori-induced inflammation. Chemical inhibition of ornithine decarboxylase (ODC), which generates the polyamine putrescine from l-ornithine, reduces gastritis in mice and adenocarcinoma incidence in gerbils infected with H. pylori However, we have also demonstrated that Odc deletion in myeloid cells enhances M1 macrophage activation and gastritis. Here we used a genetic approach to assess the specific role of gastric epithelial ODC during H. pylori infection. Specific deletion of the gene encoding for ODC in gastric epithelial cells reduces gastritis, attenuates epithelial proliferation, alters the metabolome, and downregulates the expression of immune mediators induced by H. pylori Inhibition of ODC activity or ODC knockdown in human gastric epithelial cells dampens H. pylori-induced NF-κB activation, CXCL8 mRNA expression, and IL-8 production. Chronic inflammation is a major risk factor for the progression to more severe pathologies associated with H. pylori infection, and we now show that epithelial ODC plays an important role in mediating this inflammatory response.
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Affiliation(s)
- Yvonne L Latour
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, TN
| | - Johanna C Sierra
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN
| | - Kara M McNamara
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
- Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN
| | - Thaddeus M Smith
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
| | - Paula B Luis
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN
| | - Claus Schneider
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN
| | - Alberto G Delgado
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
| | - Daniel P Barry
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
| | - Margaret M Allaman
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
| | - M Wade Calcutt
- Department of Biochemistry, Mass Spectrometry Research Center, Vanderbilt University School of Medicine, Nashville, TN; and
| | - Kevin L Schey
- Department of Biochemistry, Mass Spectrometry Research Center, Vanderbilt University School of Medicine, Nashville, TN; and
| | - M Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN
| | - Alain P Gobert
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN
| | - Keith T Wilson
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN;
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, TN
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN
- Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN
- Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN
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20
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Dooyema SD, Noto JM, Wroblewski LE, Piazuelo MB, Krishna U, Suarez G, Romero-Gallo J, Delgado AG, Peek RM. Helicobacter pylori actively suppresses innate immune nucleic acid receptors. Gut Microbes 2022; 14:2105102. [PMID: 35905376 PMCID: PMC9341374 DOI: 10.1080/19490976.2022.2105102] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Chronic mucosal pathogens have evolved multiple strategies to manipulate the host immune response; consequently, microbes contribute to the development of >2 million cases of cancer/year. Gastric adenocarcinoma is the fourth leading cause of cancer-related death and Helicobacter pylori confers the highest risk for this disease. Gastric innate immune effectors can either eliminate bacteria or mobilize adaptive immune responses including Toll-like receptors (TLRs), and cytosolic DNA sensor/adaptor proteins (e.g., stimulator of interferon genes, STING). The H. pylori strain-specific cag type IV secretion system (T4SS) augments gastric cancer risk and translocates DNA into epithelial cells where it activates the microbial DNA sensor TLR9 and suppresses injury in vivo; however, the ability of H. pylori to suppress additional nucleic acid PRRs within the context of chronic gastric inflammation and injury remains undefined. In this study, in vitro and ex vivo experiments identified a novel mechanism through which H. pylori actively suppresses STING and RIG-I signaling via downregulation of IRF3 activation. In vivo, the use of genetically deficient mice revealed that Th17 inflammatory responses are heightened following H. pylori infection within the context of Sting deficiency in conjunction with increased expression of a known host immune regulator, Trim30a. This novel mechanism of immune suppression by H. pylori is likely a critical component of a finely tuned rheostat that not only regulates the initial innate immune response, but also drives chronic gastric inflammation and injury.
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Affiliation(s)
- Samuel D.R. Dooyema
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA,Microbe-Host Interactions Training Program, Vanderbilt University, Nashville, Tennessee, USA
| | - Jennifer M. Noto
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Lydia E. Wroblewski
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - M. Blanca Piazuelo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Uma Krishna
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Giovanni Suarez
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Judith Romero-Gallo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Alberto G. Delgado
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Richard M. Peek
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA,Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA,CONTACT Richard M. Peek Vanderbilt University Medical Center, Division of Gastroenterology, 2215 Garland Avenue, 1030C Medical Research Building IV, Nashville, TN37232, USA
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21
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Loh JT, Shuman JHB, Lin AS, Favret N, Piazuelo MB, Mallal S, Chopra A, McClain MS, Cover TL. Positive Selection of Mutations in the Helicobacter pylori katA 5' Untranslated Region in a Mongolian Gerbil Model of Gastric Disease. Infect Immun 2022; 90:e0000422. [PMID: 35652648 PMCID: PMC9302185 DOI: 10.1128/iai.00004-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 05/11/2022] [Indexed: 01/18/2023] Open
Abstract
To evaluate potential effects of gastric inflammation on Helicobacter pylori diversification and evolution within the stomach, we experimentally infected Mongolian gerbils with an H. pylori strain in which Cag type IV secretion system (T4SS) activity is controlled by a TetR/tetO system. Gerbils infected with H. pylori under conditions in which Cag T4SS activity was derepressed had significantly higher levels of gastric inflammation than gerbils infected under conditions with repressed Cag T4SS activity. Mutations in the 5' untranslated region (UTR) of katA (encoding catalase) were detected in strains cultured from 8 of the 17 gerbils infected with Cag T4SS-active H. pylori and none of the strains from 17 gerbils infected with Cag T4SS-inactive H. pylori. Catalase enzymatic activity, steady-state katA transcript levels, and katA transcript stability were increased in strains with these single nucleotide polymorphisms (SNPs) compared to strains in which these SNPs were absent. Moreover, strains harboring these SNPs exhibited increased resistance to bactericidal effects of hydrogen peroxide, compared to control strains. Experimental introduction of the SNPs into the wild-type katA 5' UTR resulted in increased katA transcript stability, increased katA steady-state levels, and increased catalase enzymatic activity. Based on site-directed mutagenesis and modeling of RNA structure, increased katA transcript levels were correlated with higher predicted thermal stability of the katA 5' UTR secondary structure. These data suggest that high levels of gastric inflammation positively select for H. pylori strains producing increased levels of catalase, which may confer survival advantages to the bacteria in an inflammatory gastric environment.
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Affiliation(s)
- John T. Loh
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Jennifer H. B. Shuman
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Aung Soe Lin
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Natalie Favret
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - M. Blanca Piazuelo
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
| | - Simon Mallal
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
- Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Australia
| | - Abha Chopra
- Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Australia
| | - Mark S. McClain
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
- Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennesse, USA
| | - Timothy L. Cover
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, USA
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennesse, USA
- Veterans Affairs Tennessee Valley Healthcare System, Nashville, Tennessee, USA
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22
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Peek CT, Ford CA, Eichelberger KR, Jacobse J, Torres TP, Maseda D, Latour YL, Piazuelo MB, Johnson JR, Byndloss MX, Wilson KT, Rathmell JC, Goettel JA, Cassat JE. Intestinal Inflammation Promotes MDL-1 + Osteoclast Precursor Expansion to Trigger Osteoclastogenesis and Bone Loss. Cell Mol Gastroenterol Hepatol 2022; 14:731-750. [PMID: 35835390 PMCID: PMC9420375 DOI: 10.1016/j.jcmgh.2022.07.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 07/01/2022] [Accepted: 07/05/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND & AIMS Inflammatory bowel disease (IBD) is characterized by severe gastrointestinal inflammation, but many patients experience extra-intestinal disease. Bone loss is one common extra-intestinal manifestation of IBD that occurs through dysregulated interactions between osteoclasts and osteoblasts. Systemic inflammation has been postulated to contribute to bone loss, but the specific pathologic mechanisms have not yet been fully elucidated. We hypothesized that intestinal inflammation leads to bone loss through increased abundance and altered function of osteoclast progenitors. METHODS We used chemical, T cell driven, and infectious models of intestinal inflammation to determine the impact of intestinal inflammation on bone volume, the skeletal cytokine environment, and the cellular changes to pre-osteoclast populations within bone marrow. Additionally, we evaluated the potential for monoclonal antibody treatment against an inflammation-induced osteoclast co-receptor, myeloid DNAX activation protein 12-associating lectin-1 (MDL-1) to reduce bone loss during colitis. RESULTS We observed significant bone loss across all models of intestinal inflammation. Bone loss was associated with an increase in pro-osteoclastogenic cytokines within the bone and an expansion of a specific Cd11b-/loLy6Chi osteoclast precursor (OCP) population. Intestinal inflammation led to altered OCP expression of surface receptors involved in osteoclast differentiation and function, including the pro-osteoclastogenic co-receptor MDL-1. OCPs isolated from mice with intestinal inflammation demonstrated enhanced osteoclast differentiation ex vivo compared to controls, which was abrogated by anti-MDL-1 antibody treatment. Importantly, in vivo anti-MDL-1 antibody treatment ameliorated bone loss during intestinal inflammation. CONCLUSIONS Collectively, these data implicate the pathologic expansion and altered function of OCPs expressing MDL-1 in bone loss during IBD.
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Affiliation(s)
- Christopher T. Peek
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Caleb A. Ford
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee
| | - Kara R. Eichelberger
- Department of Pediatrics, Division of Pediatric Infectious Diseases, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Justin Jacobse
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee,Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Teresa P. Torres
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Damian Maseda
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee,Department of Dermatology, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Yvonne L. Latour
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - M. Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Joshua R. Johnson
- Vanderbilt Center for Bone Biology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Mariana X. Byndloss
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee,Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Keith T. Wilson
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee,Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee,Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee,Veterans Affairs Tennessee Valley Healthcare System, Nashville, Tennessee
| | - Jeffrey C. Rathmell
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee,Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee,Vanderbilt Center for Immunobiology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Jeremy A. Goettel
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee,Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee,Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee
| | - James E. Cassat
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee,Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee,Department of Pediatrics, Division of Pediatric Infectious Diseases, Vanderbilt University Medical Center, Nashville, Tennessee,Vanderbilt Institute for Infection, Immunology, and Inflammation, Vanderbilt University Medical Center, Nashville, Tennessee,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee,Vanderbilt Center for Immunobiology, Vanderbilt University Medical Center, Nashville, Tennessee,Vanderbilt Center for Bone Biology, Vanderbilt University Medical Center, Nashville, Tennessee,Correspondence Address correspondence to: Dr Jim Cassat, Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, 1035 Light Hall, 2215-B Garland Ave, Nashville, TN, 37232. tel: (615) 936-6494.
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23
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Latour YL, Sierra JC, Finley JL, Asim M, Barry DP, Allaman MM, Smith TM, McNamara KM, Luis PB, Schneider C, Jacobse J, Goettel JA, Calcutt MW, Rose KL, Schey KL, Milne GL, Delgado AG, Piazuelo MB, Paul BD, Snyder S, Gobert AP, Wilson KT. CTH exacerbates Helicobacter pylori immunopathogenesis by promoting macrophage metabolic remodeling and activation. JCI Insight 2022; 7:155338. [PMID: 35579952 DOI: 10.1172/jci.insight.155338] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 05/10/2022] [Indexed: 11/17/2022] Open
Abstract
Macrophages play a crucial role in the inflammatory response to the human stomach pathogen Helicobacter pylori, which infects half of the world's population and causes gastric cancer. Recent studies have highlighted the importance of macrophage immunometabolism in their activation state and function. We have demonstrated that the cysteine-producing enzyme, cystathionine g-lyase (CTH), is upregulated in humans and mice with H. pylori infection. Here we show that induction of CTH in macrophages by H. pylori promotes persistent inflammation. Cth-/- mice have reduced macrophage and T-cell activation in H. pylori-infected tissues, an altered metabolome, and decreased enrichment of immune-associated gene networks, culminating in decreased H. pylori-induced-gastritis. CTH is downstream of the proposed anti-inflammatory molecule, S-adenosylmethionine (SAM). While Cth-/- mice exhibit gastric SAM accumulation, WT mice treated with SAM did not display protection against H. pylori-induced inflammation. Instead, we demonstrate that Cth-deficient macrophages exhibit alterations in the proteome, decreased NF-kB activation, diminished expression of macrophage activation markers, and impaired oxidative phosphorylation and glycolysis. Thus, through altering cellular respiration, CTH is a key enhancer of macrophage activation contributing to a pathogenic inflammatory response that is the universal precursor for the development of H. pylori-induced gastric disease.
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Affiliation(s)
- Yvonne L Latour
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, United States of America
| | - Johanna C Sierra
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
| | - Jordan L Finley
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
| | - Mohammad Asim
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
| | - Daniel P Barry
- Department of Medicine, Vanderbilt Univeristy Medical Center, Nashville, United States of America
| | - Margaret M Allaman
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
| | - Thaddeus M Smith
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
| | - Kara M McNamara
- Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, United States of America
| | - Paula B Luis
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, United States of America
| | - Claus Schneider
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, United States of America
| | - Justin Jacobse
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, United States of America
| | - Jeremy A Goettel
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
| | - M Wade Calcutt
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, United States of America
| | - Kristie L Rose
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, United States of America
| | - Kevin L Schey
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, United States of America
| | - Ginger L Milne
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
| | - Alberto G Delgado
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
| | - M Blanca Piazuelo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
| | - Bindu D Paul
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, United States of America
| | - Solomon Snyder
- The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, United States of America
| | - Alain P Gobert
- Department of Medicine, Vandebilt University Medical Center, Nashville, United States of America
| | - Keith T Wilson
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
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24
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Noto JM, Piazuelo MB, Shah SC, Romero-Gallo J, Hart JL, Di C, Carmichael JD, Delgado AG, Halvorson AE, Greevy RA, Wroblewski LE, Sharma A, Newton AB, Allaman MM, Wilson KT, Washington MK, Calcutt MW, Schey KL, Cummings BP, Flynn CR, Zackular JP, Peek RM. Iron deficiency linked to altered bile acid metabolism promotes Helicobacter pylori-induced inflammation-driven gastric carcinogenesis. J Clin Invest 2022; 132:e147822. [PMID: 35316215 PMCID: PMC9106351 DOI: 10.1172/jci147822] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 03/16/2022] [Indexed: 12/24/2022] Open
Abstract
Gastric carcinogenesis is mediated by complex interactions among Helicobacter pylori, host, and environmental factors. Here, we demonstrate that H. pylori augmented gastric injury in INS-GAS mice under iron-deficient conditions. Mechanistically, these phenotypes were not driven by alterations in the gastric microbiota; however, discovery-based and targeted metabolomics revealed that bile acids were significantly altered in H. pylori-infected mice with iron deficiency, with significant upregulation of deoxycholic acid (DCA), a carcinogenic bile acid. The severity of gastric injury was further augmented when H. pylori-infected mice were treated with DCA, and, in vitro, DCA increased translocation of the H. pylori oncoprotein CagA into host cells. Conversely, bile acid sequestration attenuated H. pylori-induced injury under conditions of iron deficiency. To translate these findings to human populations, we evaluated the association between bile acid sequestrant use and gastric cancer risk in a large human cohort. Among 416,885 individuals, a significant dose-dependent reduction in risk was associated with cumulative bile acid sequestrant use. Further, expression of the bile acid receptor transmembrane G protein-coupled bile acid receptor 5 (TGR5) paralleled the severity of carcinogenic lesions in humans. These data demonstrate that increased H. pylori-induced injury within the context of iron deficiency is tightly linked to altered bile acid metabolism, which may promote gastric carcinogenesis.
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Affiliation(s)
- Jennifer M Noto
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - M Blanca Piazuelo
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Shailja C Shah
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Judith Romero-Gallo
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | | | - Chao Di
- Division of Protective Immunity, and
- Department of Biomedical and Health Informatics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - James D Carmichael
- Department of Biochemistry, Mass Spectrometry Research Center Laboratory, Vanderbilt University, Nashville, Tennessee, USA
| | - Alberto G Delgado
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Alese E Halvorson
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Robert A Greevy
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Lydia E Wroblewski
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Ayushi Sharma
- Creighton University School of Medicine, Omaha, Nebraska, USA
| | | | - Margaret M Allaman
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Keith T Wilson
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee, USA
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - M Kay Washington
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - M Wade Calcutt
- Department of Biochemistry, Mass Spectrometry Research Center Laboratory, Vanderbilt University, Nashville, Tennessee, USA
| | - Kevin L Schey
- Department of Biochemistry, Mass Spectrometry Research Center Laboratory, Vanderbilt University, Nashville, Tennessee, USA
| | - Bethany P Cummings
- Department of Surgery, University of California, Davis, Davis, California, USA
| | - Charles R Flynn
- Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Joseph P Zackular
- Division of Protective Immunity, and
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Richard M Peek
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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25
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Brown RE, Jacobse J, Anant SA, Blunt KM, Chen B, Vega PN, Jones CT, Pilat JM, Revetta F, Gorby AH, Stengel KR, Choksi YA, Palin K, Piazuelo MB, Washington MK, Lau KS, Goettel JA, Hiebert SW, Short SP, Williams CS. MTG16 (CBFA2T3) regulates colonic epithelial differentiation, colitis, and tumorigenesis by repressing E protein transcription factors. JCI Insight 2022; 7:153045. [PMID: 35503250 PMCID: PMC9220854 DOI: 10.1172/jci.insight.153045] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 04/13/2022] [Indexed: 12/04/2022] Open
Abstract
Aberrant epithelial differentiation and regeneration contribute to colon pathologies including inflammatory bowel disease (IBD) and colitis-associated cancer (CAC). MTG16 (CBFA2T3) is a transcriptional corepressor expressed in the colonic epithelium. MTG16 deficiency in mice exacerbates colitis and increases tumor burden in CAC, though the underlying mechanisms remain unclear. Here, we identified MTG16 as a central mediator of epithelial differentiation, promoting goblet and restraining enteroendocrine cell development in homeostasis and enabling regeneration following dextran sulfate sodium (DSS)-induced colitis. Transcriptomic analyses implicated increased E box-binding transcription factor (E protein) activity in MTG16-deficient colon crypts. Using a novel mouse model with a point mutation that attenuates MTG16:E protein interactions (Mtg16P209T), we established that MTG16 exerts control over colonic epithelial differentiation and regeneration by repressing E protein-mediated transcription. Mimicking murine colitis, MTG16 expression was increased in biopsies from patients with active IBD compared to unaffected controls. Finally, uncoupling MTG16:E protein interactions partially phenocopied the enhanced tumorigenicity of Mtg16-/- colon in the azoxymethane(AOM)/DSS-induced model of CAC, indicating that MTG16 protects from tumorigenesis through additional mechanisms. Collectively, our results demonstrate that MTG16, via its repression of E protein targets, is a key regulator of cell fate decisions during colon homeostasis, colitis, and cancer.
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Affiliation(s)
- Rachel E Brown
- Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, United States of America
| | - Justin Jacobse
- Willem-Alexander Children's Hospital, Leiden University Medical Center, Leiden, Netherlands
| | - Shruti A Anant
- Department of Medicine, Health, and Society, Vanderbilt University, Nashville, United States of America
| | - Koral M Blunt
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
| | - Bob Chen
- Program in Chemical and Physical Biology, Vanderbilt University School of Medicine, Nashville, United States of America
| | - Paige N Vega
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, United States of America
| | - Chase T Jones
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
| | - Jennifer M Pilat
- Program in Cancer Biology, Vanderbilt University School of Medicine, Nashville, United States of America
| | - Frank Revetta
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University, Nashville, United States of America
| | - Aidan H Gorby
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
| | - Kristy R Stengel
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, United States of America
| | - Yash A Choksi
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
| | - Kimmo Palin
- Department of Medical and Clinical Genetics, University of Helsinki, Helsinki, Finland
| | - M Blanca Piazuelo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
| | - Mary K Washington
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University, Nashville, United States of America
| | - Ken S Lau
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, United States of America
| | - Jeremy A Goettel
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
| | - Scott W Hiebert
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, United States of America
| | - Sarah P Short
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
| | - Christopher S Williams
- Department of Medicine, Vanderbilt University Medical Center, Nashville, United States of America
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26
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Morningstar-Wright L, Czinn SJ, Piazuelo MB, Banerjee A, Godlewska R, Blanchard TG. The TNF-Alpha Inducing Protein is Associated With Gastric Inflammation and Hyperplasia in a Murine Model of Helicobacter pylori Infection. Front Pharmacol 2022; 13:817237. [PMID: 35237167 PMCID: PMC8883333 DOI: 10.3389/fphar.2022.817237] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 01/19/2022] [Indexed: 12/21/2022] Open
Abstract
Helicobacter pylori (H. pylori) is a Gram-negative bacterium that colonizes the human stomach leading to the development of chronic gastritis, peptic ulcers and gastric adenocarcinoma. A combination of host, environment and bacterial virulence factors contribute to disease development. The H. pylori TNFα inducing protein (Tipɑ) is a virulence factor shown to induce multiple pro-inflammatory cytokines in addition to TNFα in vitro. The goal of the present study was to elucidate the role of Tipα in promoting inflammation in vivo and to identify the molecular pathways associated with Tipα associated virulence. Mice were infected with wild-type Sydney strain (SS1) or a tipα mutant (Δtipα) for 1 month and 4 months. We also completed a second 4 months infection including a 1:1 SS1 to Δtipα co-infected group in addition to SS1 and Δtipα infected groups. The expression of TNFα, and KC were significantly higher in the SS1 infected group compared to both uninfected control (naïve) and Δtipα groups. Mice infected with Tipα expressing SS1 induced more severe histological gastritis and developed hyperplasia compared to Δtipα infected mice. Microarray analysis of gastric epithelial cells co-cultured with recombinant Tipα (rTipα) demonstrates up-regulation of the NFκB pathway. This data suggest Tipα plays an important role in H. pylori induced inflammation.
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Affiliation(s)
- Lindsay Morningstar-Wright
- GeneDx, Gaithersburg, MD, United States.,Department of Pediatrics, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Steven J Czinn
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, MD, United States
| | - M Blanca Piazuelo
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Aditi Banerjee
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Renata Godlewska
- Department of Bacterial Genetics, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Thomas G Blanchard
- Department of Pediatrics, University of Maryland School of Medicine, Baltimore, MD, United States
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27
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Gobert AP, Latour YL, Asim M, Barry DP, Allaman MM, Finley JL, Smith TM, McNamara KM, Singh K, Sierra JC, Delgado AG, Luis PB, Schneider C, Washington MK, Piazuelo MB, Zhao S, Coburn LA, Wilson KT. Protective Role of Spermidine in Colitis and Colon Carcinogenesis. Gastroenterology 2022; 162:813-827.e8. [PMID: 34767785 PMCID: PMC8881368 DOI: 10.1053/j.gastro.2021.11.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 10/27/2021] [Accepted: 11/02/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND & AIMS Because inflammatory bowel disease is increasing worldwide and can lead to colitis-associated carcinoma (CAC), new interventions are needed. We have shown that spermine oxidase (SMOX), which generates spermidine (Spd), regulates colitis. Here we determined whether Spd treatment reduces colitis and carcinogenesis. METHODS SMOX was quantified in human colitis and associated dysplasia using quantitative reverse-transcription polymerase chain reaction and immunohistochemistry. We used wild-type (WT) and Smox-/- C57BL/6 mice treated with dextran sulfate sodium (DSS) or azoxymethane (AOM)-DSS as models of colitis and CAC, respectively. Mice with epithelial-specific deletion of Apc were used as a model of sporadic colon cancer. Animals were supplemented or not with Spd in the drinking water. Colonic polyamines, inflammation, tumorigenesis, transcriptomes, and microbiomes were assessed. RESULTS SMOX messenger RNA levels were decreased in human ulcerative colitis tissues and inversely correlated with disease activity, and SMOX protein was reduced in colitis-associated dysplasia. DSS colitis and AOM-DSS-induced dysplasia and tumorigenesis were worsened in Smox-/- vs WT mice and improved in both genotypes with Spd. Tumor development caused by Apc deletion was also reduced by Spd. Smox deletion and AOM-DSS treatment were both strongly associated with increased expression of α-defensins, which was reduced by Spd. A shift in the microbiome, with reduced abundance of Prevotella and increased Proteobacteria and Deferribacteres, occurred in Smox-/- mice and was reversed with Spd. CONCLUSIONS Loss of SMOX is associated with exacerbated colitis and CAC, increased α-defensin expression, and dysbiosis of the microbiome. Spd supplementation reverses these phenotypes, indicating that it has potential as an adjunctive treatment for colitis and chemopreventive for colon carcinogenesis.
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Affiliation(s)
- Alain P Gobert
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee; Program in Cancer Biolog Vanderbilt University Medical Center, Nashville, Tennessee
| | - Yvonne L Latour
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Mohammad Asim
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Daniel P Barry
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Margaret M Allaman
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Jordan L Finley
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Thaddeus M Smith
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Kara M McNamara
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Program in Cancer Biolog Vanderbilt University Medical Center, Nashville, Tennessee
| | - Kshipra Singh
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Johanna C Sierra
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Alberto G Delgado
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Paula B Luis
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Claus Schneider
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee; Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - M Kay Washington
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - M Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Shilin Zhao
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Lori A Coburn
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee; Program in Cancer Biolog Vanderbilt University Medical Center, Nashville, Tennessee; Veterans Affairs Tennessee Valley Healthcare System, Nashville, Tennessee
| | - Keith T Wilson
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, Tennessee; Program in Cancer Biolog Vanderbilt University Medical Center, Nashville, Tennessee; Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee; Veterans Affairs Tennessee Valley Healthcare System, Nashville, Tennessee.
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28
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Dixon BREA, Lee TJ, Contreras Healey DC, Li J, Goettel JA, Piazuelo MB, Algood HMS. IL-17 Receptor Signaling through IL-17A or IL-17F Is Sufficient to Maintain Innate Response and Control of Helicobacter pylori Immunopathogenesis. Immunohorizons 2022; 6:116-129. [PMID: 35144998 DOI: 10.4049/immunohorizons.2000072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 01/17/2022] [Indexed: 11/19/2022] Open
Abstract
IL-17R signaling is required for control of extracellular pathogens and is also implicated in development of chronic inflammatory processes. The response to the human pathogen Helicobacter pylori results in Th1 and Th17 cell activation and a chronic inflammatory process that can lead to adverse outcomes, such as gastric cancer. Previously, we identified IL-17RA as a requirement for the recruitment of neutrophils and control of H. pylori colonization in the gastric mucosa. Unexpectedly, H. pylori-infected Il17ra -/- mice had significantly more chronic inflammation than H. pylori-infected wild-type mice. In this study, human epithelial cell lines and murine models were used to investigate differential roles for IL-17A, IL-17F, and IL-17A/F during H. pylori infection. Moreover, the hypothesis that IL-17RA signaling, specifically in lymphocytes, provides an autocrine feedback loop that downregulates Th17 cytokine production was investigated. The data indicate that epithelial cells exhibit a stronger response to IL-17A and IL-17A/F than IL-17F, and that IL-17A and IL-17A/F can synergize with TNF and IL-22 to induce antimicrobial genes of gastric epithelial cells. In vivo deficiencies of IL-17A or IL-17F alone did not significantly change the immunopathological response to H. pylori, but if both cytokines were absent, a hyperinflammatory lymphocytic response developed. Using a cre/flox targeting approach for IL-17RA combined with infection, our findings demonstrate that increased chronic inflammation in Il17ra -/- mice was not attributed to a T cell-intrinsic defect. These data imply that IL-17A and IL-17F may have overlapping roles in maintenance of the gastric mucosal response to infection.
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Affiliation(s)
- Beverly R E A Dixon
- Department of Medicine, Division of Infectious Disease, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN
| | - Tiffany J Lee
- Department of Medicine, Division of Infectious Disease, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN
| | - Diana C Contreras Healey
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN.,Vanderbilt Institute of Infection, Immunity, and Inflammation, Vanderbilt University Medical Center, Nashville, TN
| | - Jing Li
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN.,Vanderbilt Institute of Infection, Immunity, and Inflammation, Vanderbilt University Medical Center, Nashville, TN
| | - Jeremy A Goettel
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN.,Vanderbilt Institute of Infection, Immunity, and Inflammation, Vanderbilt University Medical Center, Nashville, TN.,Department of Medicine, Division of Gastroenterology, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN; and
| | - M Blanca Piazuelo
- Vanderbilt Institute of Infection, Immunity, and Inflammation, Vanderbilt University Medical Center, Nashville, TN.,Department of Medicine, Division of Gastroenterology, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN; and
| | - Holly M Scott Algood
- Department of Medicine, Division of Infectious Disease, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN; .,Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Vanderbilt University Medical Center, Nashville, TN.,Vanderbilt Institute of Infection, Immunity, and Inflammation, Vanderbilt University Medical Center, Nashville, TN.,Tennessee Valley Healthcare System, Department of Veterans Affairs, Nashville, TN
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29
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Shah SC, Piazuelo MB, Kuipers EJ, Li D. AGA Clinical Practice Update on the Diagnosis and Management of Atrophic Gastritis: Expert Review. Gastroenterology 2021; 161:1325-1332.e7. [PMID: 34454714 PMCID: PMC8740554 DOI: 10.1053/j.gastro.2021.06.078] [Citation(s) in RCA: 126] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 06/09/2021] [Accepted: 06/28/2021] [Indexed: 02/07/2023]
Abstract
DESCRIPTION The purpose of this Clinical Practice Update Expert Review is to provide clinicians with guidance on the diagnosis and management of atrophic gastritis, a common preneoplastic condition of the stomach, with a primary focus on atrophic gastritis due to chronic Helicobacter pylori infection-the most common etiology-or due to autoimmunity. To date, clinical guidance for best practices related to the diagnosis and management of atrophic gastritis remains very limited in the United States, which leads to poor recognition of this preneoplastic condition and suboptimal risk stratification. In addition, there is heterogeneity in the definitions of atrophic gastritis, autoimmune gastritis, pernicious anemia, and gastric neoplasia in the literature, which has led to confusion in clinical practice and research. Accordingly, the primary objective of this Clinical Practice Update is to provide clinicians with a framework for the diagnosis and management of atrophic gastritis. By focusing on atrophic gastritis, this Clinical Practice Update is intended to complement the 2020 American Gastroenterological Association Institute guidelines on the management of gastric intestinal metaplasia. These recent guidelines did not specifically discuss the diagnosis and management of atrophic gastritis. Providers should recognize, however, that a diagnosis of intestinal metaplasia on gastric histopathology implies the diagnosis of atrophic gastritis because intestinal metaplasia occurs in underlying atrophic mucosa, although this is often not distinctly noted on histopathologic reports. Nevertheless, atrophic gastritis represents an important stage with distinct histopathologic alterations in the multistep cascade of gastric cancer pathogenesis. METHODS The Best Practice Advice statements presented herein were developed from a combination of available evidence from published literature and consensus-based expert opinion. No formal rating of the strength or quality of the evidence was carried out. These statements are meant to provide practical advice to clinicians practicing in the United States. Best Practice Advice Statements BEST PRACTICE ADVICE 1: Atrophic gastritis is defined as the loss of gastric glands, with or without metaplasia, in the setting of chronic inflammation mainly due to Helicobacter pylori infection or autoimmunity. Regardless of the etiology, the diagnosis of atrophic gastritis should be confirmed by histopathology. BEST PRACTICE ADVICE 2: Providers should be aware that the presence of intestinal metaplasia on gastric histology almost invariably implies the diagnosis of atrophic gastritis. There should be a coordinated effort between gastroenterologists and pathologists to improve the consistency of documenting the extent and severity of atrophic gastritis, particularly if marked atrophy is present. BEST PRACTICE ADVICE 3: Providers should recognize typical endoscopic features of atrophic gastritis, which include pale appearance of gastric mucosa, increased visibility of vasculature due to thinning of the gastric mucosa, and loss of gastric folds, and, if with concomitant intestinal metaplasia, light blue crests and white opaque fields. Because these mucosal changes are often subtle, techniques to optimize evaluation of the gastric mucosa should be performed. BEST PRACTICE ADVICE 4: When endoscopic features of atrophic gastritis are present, providers should assess the extent endoscopically. Providers should obtain biopsies from the suspected atrophic/metaplastic areas for histopathological confirmation and risk stratification; at a minimum, biopsies from the body and antrum/incisura should be obtained and placed in separately labeled jars. Targeted biopsies should additionally be obtained from any other mucosal abnormalities. BEST PRACTICE ADVICE 5: In patients with histology compatible with autoimmune gastritis, providers should consider checking antiparietal cell antibodies and anti-intrinsic factor antibodies to assist with the diagnosis. Providers should also evaluate for anemia due to vitamin B-12 and iron deficiencies. BEST PRACTICE ADVICE 6: All individuals with atrophic gastritis should be assessed for H pylori infection. If positive, treatment of H pylori should be administered and successful eradication should be confirmed using nonserological testing modalities. BEST PRACTICE ADVICE 7: The optimal endoscopic surveillance interval for patients with atrophic gastritis is not well-defined and should be decided based on individual risk assessment and shared decision making. A surveillance endoscopy every 3 years should be considered in individuals with advanced atrophic gastritis, defined based on anatomic extent and histologic grade. BEST PRACTICE ADVICE 8: The optimal surveillance interval for individuals with autoimmune gastritis is unclear. Interval endoscopic surveillance should be considered based on individualized assessment and shared decision making. BEST PRACTICE ADVICE 9: Providers should recognize pernicious anemia as a late-stage manifestation of autoimmune gastritis that is characterized by vitamin B-12 deficiency and macrocytic anemia. Patients with a new diagnosis of pernicious anemia who have not had a recent endoscopy should undergo endoscopy with topographical biopsies to confirm corpus-predominant atrophic gastritis for risk stratification and to rule out prevalent gastric neoplasia, including neuroendocrine tumors. BEST PRACTICE ADVICE 10: Individuals with autoimmune gastritis should be screened for type 1 gastric neuroendocrine tumors with upper endoscopy. Small neuroendocrine tumors should be removed endoscopically, followed by surveillance endoscopy every 1-2 years, depending on the burden of neuroendocrine tumors. BEST PRACTICE ADVICE 11: Providers should evaluate for iron and vitamin B-12 deficiencies in patients with atrophic gastritis irrespective of etiology, especially if corpus-predominant. Likewise, in patients with unexplained iron or vitamin B-12 deficiency, atrophic gastritis should be considered in the differential diagnosis and appropriate diagnostic evaluation pursued. BEST PRACTICE ADVICE 12: In patients with autoimmune gastritis, providers should recognize that concomitant autoimmune disorders, particularly autoimmune thyroid disease, are common. Screening for autoimmune thyroid disease should be performed.
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Affiliation(s)
- Shailja C. Shah
- Gastroenterology Section, Veterans Affairs San Diego Healthcare System, La Jolla, California,Division of Gastroenterology, University of California, San Diego, La Jolla, California
| | - M. Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Ernst J. Kuipers
- Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Dan Li
- Department of Gastroenterology, Kaiser Permanente Northern California, Santa Clara, California,Division of Research, Kaiser Permanente Northern California, Oakland, California
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30
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Algood HMS, Dixon BR, Lee TJ, Piazuelo MB. IL-17A or IL-17F is sufficient to maintain innate response and control of H. pylori immunopathogenesis. The Journal of Immunology 2021. [DOI: 10.4049/jimmunol.206.supp.99.28] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Abstract
Interleukin-17 receptor (IL-17R) signaling is required for control of many extracellular pathogens due to its impact on neutrophil recruitment and antimicrobial responses. Infection with the extracellular pathogen Helicobacter pylori results in Th1 and Th17 cell activation and a chronic inflammatory process which can lead to adverse outcomes such as gastric cancer. Previously, we identified IL-17RA as a requirement for the recruitment of neutrophils. Surprisingly, H. pylori infected IL-17RA−/− mice had significantly more chronic inflammation than H. pylori infected WT mice. In the current study, in vitro human epithelial cell cultures and in vivo mouse models were used to investigate differential roles for IL-17A, IL-17F and IL-17A/F during H. pylori infection. The data indicate generally that epithelial cells responded to IL-17A or IL-17A/F better than IL-17F. Increased gene expression of some factors, such as Cxcl8, required a co-stimulus such as H. pylori, TNF or IL-22 in epithelial cells, but expression of Pigr and Nox1 were induced by IL-17A alone. In vivo deficiencies of IL-17A or IL-17F alone did not significantly change the immunopathological response to H. pylori, but if both cytokines were absent, a hyperinflammatory lymphocytic response developed similar to what was observed in IL-17RA−/− mice. These data imply that IL-17A and IL-17F may have some overlapping role or compensatory roles in maintenance of the gastric mucosal response to infection which is required for preventing immunopathology.
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Affiliation(s)
- Holly Marie Scott Algood
- 1Vanderbilt University Medical Center
- 2Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN
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Mannion A, Dzink-Fox J, Shen Z, Piazuelo MB, Wilson KT, Correa P, Peek RM, Camargo MC, Fox JG. Helicobacter pylori Antimicrobial Resistance and Gene Variants in High- and Low-Gastric-Cancer-Risk Populations. J Clin Microbiol 2021; 59:e03203-20. [PMID: 33692136 PMCID: PMC8091839 DOI: 10.1128/jcm.03203-20] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 02/28/2021] [Indexed: 02/07/2023] Open
Abstract
Colombia, South America has one of the world's highest burdens of Helicobacter pylori infection and gastric cancer. While multidrug antibiotic regimens can effectively eradicate H. pylori, treatment efficacy is being jeopardized by the emergence of antibiotic-resistant H. pylori strains. Moreover, the spectrum of and genetic mechanisms for antibiotic resistance in Colombia is underreported. In this study, 28 H. pylori strains isolated from gastric biopsy specimens from a high-gastric-cancer-risk (HGCR) population living in the Andes Mountains in Túquerres, Colombia and 31 strains from a low-gastric-cancer-risk (LGCR) population residing on the Pacific coast in Tumaco, Colombia were subjected to antibiotic susceptibility testing for amoxicillin, clarithromycin, levofloxacin, metronidazole, rifampin, and tetracycline. Resistance-associated genes were amplified by PCR for all isolates, and 29 isolates were whole-genome sequenced (WGS). No strains were resistant to amoxicillin, clarithromycin, or rifampin. One strain was resistant to tetracycline and had an A926G mutation in its 16S rRNA gene. Levofloxacin resistance was observed in 12/59 isolates and was significantly associated with N87I/K and/or D91G/Y mutations in gyrA Most isolates were resistant to metronidazole; this resistance was significantly higher in the LGCR (31/31) group compared to the HGCR (24/28) group. Truncations in rdxA and frxA were present in nearly all metronidazole-resistant strains. There was no association between phylogenetic relationship and resistance profiles based on WGS analysis. Our results indicate H. pylori isolates from Colombians exhibit multidrug antibiotic resistance. Continued surveillance of H. pylori antibiotic resistance in Colombia is warranted in order to establish appropriate eradication treatment regimens for this population.
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Affiliation(s)
- Anthony Mannion
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - JoAnn Dzink-Fox
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Zeli Shen
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | | | | | | | | | - M Constanza Camargo
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, Maryland, USA
| | - James G Fox
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
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32
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Gobert AP, Boutaud O, Asim M, Zagol-Ikapitte IA, Delgado AG, Latour YL, Finley JL, Singh K, Verriere TG, Allaman MM, Barry DP, McNamara KM, Sierra JC, Amarnath V, Tantawy MN, Bimczok D, Piazuelo MB, Washington MK, Zhao S, Coburn LA, Wilson KT. Dicarbonyl Electrophiles Mediate Inflammation-Induced Gastrointestinal Carcinogenesis. Gastroenterology 2021; 160:1256-1268.e9. [PMID: 33189701 PMCID: PMC7956217 DOI: 10.1053/j.gastro.2020.11.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 10/23/2020] [Accepted: 11/06/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND & AIMS Inflammation in the gastrointestinal tract may lead to the development of cancer. Dicarbonyl electrophiles, such as isolevuglandins (isoLGs), are generated from lipid peroxidation during the inflammatory response and form covalent adducts with amine-containing macromolecules. Thus, we sought to determine the role of dicarbonyl electrophiles in inflammation-associated carcinogenesis. METHODS The formation of isoLG adducts was analyzed in the gastric tissues of patients infected with Helicobacter pylori from gastritis to precancerous intestinal metaplasia, in human gastric organoids, and in patients with colitis and colitis-associated carcinoma (CAC). The effect on cancer development of a potent scavenger of dicarbonyl electrophiles, 5-ethyl-2-hydroxybenzylamine (EtHOBA), was determined in transgenic FVB/N insulin-gastrin (INS-GAS) mice and Mongolian gerbils as models of H pylori-induced carcinogenesis and in C57BL/6 mice treated with azoxymethane-dextran sulfate sodium as a model of CAC. The effect of EtHOBA on mutations in gastric epithelial cells of H pylori-infected INS-GAS mice was assessed by whole-exome sequencing. RESULTS We show increased isoLG adducts in gastric epithelial cell nuclei in patients with gastritis and intestinal metaplasia and in human gastric organoids infected with H pylori. EtHOBA inhibited gastric carcinoma in infected INS-GAS mice and gerbils and attenuated isoLG adducts, DNA damage, and somatic mutation frequency. Additionally, isoLG adducts were elevated in tissues from patients with colitis, colitis-associated dysplasia, and CAC as well as in dysplastic tumors of C57BL/6 mice treated with azoxymethane-dextran sulfate sodium. In this model, EtHOBA significantly reduced adduct formation, tumorigenesis, and dysplasia severity. CONCLUSIONS Dicarbonyl electrophiles represent a link between inflammation and somatic genomic alterations and are thus key targets for cancer chemoprevention.
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Affiliation(s)
- Alain P. Gobert
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Olivier Boutaud
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee.
| | - Mohammad Asim
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Irene A. Zagol-Ikapitte
- Department of Biochemistry, Mass Spectrometry Research Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Alberto G. Delgado
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Yvonne L. Latour
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Jordan L. Finley
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Kshipra Singh
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Thomas G. Verriere
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Margaret M. Allaman
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Daniel P. Barry
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Kara M. McNamara
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Johanna C. Sierra
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Venkataraman Amarnath
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Mohammed N. Tantawy
- Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, Nashville, TN, USA.,Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Diane Bimczok
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT, USA
| | - M. Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M. Kay Washington
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA.,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Shilin Zhao
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Lori A. Coburn
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA.,Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA
| | - Keith T. Wilson
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA.,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA.,Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA
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33
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Piazuelo MB, Bravo LE, Mera RM, Camargo MC, Bravo JC, Delgado AG, Washington MK, Rosero A, Garcia LS, Realpe JL, Cifuentes SP, Morgan DR, Peek RM, Correa P, Wilson KT. The Colombian Chemoprevention Trial: 20-Year Follow-Up of a Cohort of Patients With Gastric Precancerous Lesions. Gastroenterology 2021; 160:1106-1117.e3. [PMID: 33220252 PMCID: PMC7956231 DOI: 10.1053/j.gastro.2020.11.017] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 11/10/2020] [Accepted: 11/12/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND & AIMS Helicobacter pylori eradication and endoscopic surveillance of gastric precancerous lesions are strategies to reduce gastric cancer (GC) risk. To our knowledge, this study is the longest prospective cohort of an H pylori eradication trial in a Hispanic population. METHODS A total of 800 adults with precancerous lesions were randomized to anti-H pylori treatment or placebo. Gastric biopsy samples taken at baseline and 3, 6, 12, 16, and 20 years were assessed by our Correa histopathology score. A generalized linear mixed model with a participant-level random intercept was used to estimate the effect of H pylori status on the score over time. Logistic regression models were used to estimate progression by baseline diagnosis and to estimate GC risk by intestinal metaplasia (IM) subtype and anatomic location. RESULTS Overall, 356 individuals completed 20 years of follow-up. Anti-H pylori therapy (intention-to-treat) reduced progression of the Correa score (odds ratio [OR], 0.59; 95% confidence interval [CI], 0.38-0.93). H pylori-negative status had a beneficial effect on the score over time (P = .036). Among individuals with IM (including indefinite for dysplasia) at baseline, incidence rates per 100 person-years were 1.09 (95% CI, 0.85-1.33) for low-grade/high-grade dysplasia and 0.14 (95% CI, 0.06-0.22) for GC. Incomplete-type (vs complete-type) IM at baseline presented higher GC risk (OR, 13.4; 95% CI, 1.8-103.8). Individuals with corpus (vs antrum-restricted) IM showed an OR of 2.1 (95% CI, 0.7-6.6) for GC. CONCLUSIONS In a high-GC-risk Hispanic population, anti-H pylori therapy had a long-term beneficial effect against histologic progression. Incomplete IM is a strong predictor of GC risk.
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Affiliation(s)
- M. Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Luis E. Bravo
- Department of Pathology, Universidad del Valle School of Medicine, Cali, Valle del Cauca, Colombia
| | - Robertino M. Mera
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M. Constanza Camargo
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - Juan C. Bravo
- Department of Pathology, Universidad del Valle School of Medicine, Cali, Valle del Cauca, Colombia
| | - Alberto G. Delgado
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M. Kay Washington
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | | | - Luz S. Garcia
- Department of Pathology, Universidad del Valle School of Medicine, Cali, Valle del Cauca, Colombia
| | | | | | - Douglas R. Morgan
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA,Division of Gastroenterology, Department of Medicine, University of Alabama, Birmingham, AL, USA
| | - Richard M. Peek
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Pelayo Correa
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Keith T. Wilson
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA,Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA
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34
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Gobert AP, Finley JL, Latour YL, Asim M, Smith TM, Verriere TG, Barry DP, Allaman MM, Delagado AG, Rose KL, Calcutt MW, Schey KL, Sierra JC, Piazuelo MB, Mirmira RG, Wilson KT. Hypusination Orchestrates the Antimicrobial Response of Macrophages. Cell Rep 2020; 33:108510. [PMID: 33326776 PMCID: PMC7812972 DOI: 10.1016/j.celrep.2020.108510] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 10/28/2020] [Accepted: 11/18/2020] [Indexed: 12/21/2022] Open
Abstract
Innate responses of myeloid cells defend against pathogenic bacteria via inducible effectors. Deoxyhypusine synthase (DHPS) catalyzes the transfer of the N-moiety of spermidine to the lysine-50 residue of eukaryotic translation initiation factor 5A (EIF5A) to form the amino acid hypusine. Hypusinated EIF5A (EIF5AHyp) transports specific mRNAs to ribosomes for translation. We show that DHPS is induced in macrophages by two gastrointestinal pathogens, Helicobacter pylori and Citrobacter rodentium, resulting in enhanced hypusination of EIF5A. EIF5AHyp was also increased in gastric macrophages from patients with H. pylori gastritis. Furthermore, we identify the bacteria-induced immune effectors regulated by hypusination. This set of proteins includes essential constituents of antimicrobial response and autophagy. Mice with myeloid cell-specific deletion of Dhps exhibit reduced EIF5AHyp in macrophages and increased bacterial burden and inflammation. Thus, regulation of translation through hypusination is a critical hallmark of the defense of eukaryotic hosts against pathogenic bacteria. Gobert et al. demonstrate that hypusination, a specific mechanism regulating translation, is induced in macrophages by bacteria. Hypusination is required for the translation of inducible antimicrobial effectors. Mice that specifically lack hypusination in macrophages are highly susceptible to Helicobacter pylori and Citrobacter rodentium, two pathogens of the gastrointestinal tract.
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Affiliation(s)
- Alain P Gobert
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
| | - Jordan L Finley
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Yvonne L Latour
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Mohammad Asim
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Thaddeus M Smith
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Thomas G Verriere
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Daniel P Barry
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Margaret M Allaman
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Alberto G Delagado
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Kristie L Rose
- Department of Biochemistry, Mass Spectrometry Research Center, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - M Wade Calcutt
- Department of Biochemistry, Mass Spectrometry Research Center, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Kevin L Schey
- Department of Biochemistry, Mass Spectrometry Research Center, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Johanna C Sierra
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - M Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN 37232, USA
| | - Raghavendra G Mirmira
- Translational Research Center, Department of Medicine, The University of Chicago, Chicago, IL 60637, USA
| | - Keith T Wilson
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN 37232, USA; Department of Pathology, Microbiology, and Immunology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA; Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN 37232, USA.
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35
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Huang RJ, Koh H, Hwang JH, Abnet CC, Alarid-Escudero F, Amieva MR, Bruce MG, Camargo MC, Chan AT, Choi IJ, Corvalan A, Davis JL, Deapen D, Epplein M, Greenwald DA, Hamashima C, Hur C, Inadomi JM, Ji HP, Jung HY, Lee E, Lin B, Palaniappan LP, Parsonnet J, Peek RM, Piazuelo MB, Rabkin CS, Shah SC, Smith A, So S, Stoffel EM, Umar A, Wilson KT, Woo Y, Yeoh KG. A Summary of the 2020 Gastric Cancer Summit at Stanford University. Gastroenterology 2020; 159:1221-1226. [PMID: 32707045 PMCID: PMC7577947 DOI: 10.1053/j.gastro.2020.05.100] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 05/04/2020] [Indexed: 02/06/2023]
Abstract
There exists no coherent national strategy for the early detection or prevention of gastric cancer in the United States (US), even among identified high-risk groups such as Asian Americans, African Americans, Hispanic Americans, and Alaska Native/American Indian peoples. As a result, patients with gastric cancer in the US are diagnosed at later stages and demonstrate worse overall survival compared to nations of East Asia with established screening programs (Table 1). The under-recognition of gastric cancer risk within minority communities is a significant unaddressed healthcare disparity.
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Affiliation(s)
- Robert J. Huang
- Division of Gastroenterology and Hepatology, Department of Medicine, Stanford University, Stanford, CA
| | - Howard Koh
- Harvard TH Chan School of Public Health, Boston, MA
| | - Joo Ha Hwang
- Division of Gastroenterology and Hepatology, Department of Medicine, Stanford University, Stanford, California.
| | | | - Christian C. Abnet
- Division of Cancer Epidemiology & Genetics, National Cancer Institute, Rockville, MD
| | - Fernando Alarid-Escudero
- Division of Public Administration, Center for Research and Teaching in Economics, Aguascalientes, Mexico
| | - Manuel R. Amieva
- Division of Infectious Diseases, Department of Pediatrics, Stanford University
| | - Michael G. Bruce
- Arctic Investigations Program, Centers for Disease Control and Prevention, Anchorage, AK
| | - M. Constanza Camargo
- Division of Cancer Epidemiology & Genetics, National Cancer Institute, Rockville, MD
| | - Andrew T. Chan
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital, Boston, MA
| | - Il Ju Choi
- Center for Gastric Cancer, National Cancer Center, Goyang, South Korea
| | - Alejandro Corvalan
- Advanced Center for Chronic Diseases (ACCDiS), Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - Jeremy L. Davis
- Center for Cancer Research, National Cancer Institute, Bethesda, MD
| | - Dennis Deapen
- Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA
| | - Meira Epplein
- Department of Population Health Sciences, Duke University, and Cancer Control and Population Sciences Program, Duke Cancer Institute, Durham, NC
| | - David A. Greenwald
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
| | | | - Chin Hur
- Division of Digestive & Liver Diseases, Columbia University, New York, NY
| | - John M. Inadomi
- Division of Gastroenterology, University of Washington, Seattle, WA
| | - Hanlee P. Ji
- Division of Hematology and Oncology, Department of Medicine, Stanford University
| | - Hwoon-Yong Jung
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
| | - Eunjung Lee
- Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA
| | - Bryant Lin
- Division of Primary Care and Population Health, Department of Medicine, Stanford University
| | - Latha P. Palaniappan
- Division of Primary Care and Population Health, Department of Medicine, Stanford University
| | - Julie Parsonnet
- Division of Infectious Diseases, Department of Medicine, Stanford University
| | - Richard M. Peek
- Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University Medical Center, Nashville, TN
| | - M. Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University Medical Center, Nashville, TN
| | - Charles S. Rabkin
- Division of Cancer Epidemiology & Genetics, National Cancer Institute, Rockville, MD
| | - Shailja C. Shah
- Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University Medical Center, Nashville, TN,Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN
| | - Aki Smith
- Hope for Stomach Cancer, Marina Del Rey, CA
| | - Samuel So
- The Asian Liver Center, Stanford University
| | - Elena M. Stoffel
- Division of Gastroenterology and Hepatology, University of Michigan, Ann Arbor, MI
| | - Asad Umar
- Division of Cancer Prevention, National Cancer Institute, Rockville, MD
| | - Keith T. Wilson
- Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University Medical Center, Nashville, TN,Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN
| | - Yanghee Woo
- Division of Surgical Oncology, Department of Surgery, City of Hope National Comprehensive Cancer Center, Duarte, CA
| | - Khay Guan Yeoh
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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36
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Whary MT, Avenia JMR, Bravo LE, Lofgren JL, Lertpiriyapong K, Mera-Giler R, Piazuelo MB, Correa P, Peek RM, Wilson KT, Fox JG. Contrasting serum biomarker profiles in two Colombian populations with different risks for progression of premalignant gastric lesions during chronic Helicobacter pylori infection. Cancer Epidemiol 2020; 67:101726. [PMID: 32447242 DOI: 10.1016/j.canep.2020.101726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/24/2020] [Accepted: 04/27/2020] [Indexed: 11/26/2022]
Abstract
BACKGROUND Colombians in coastal Tumaco have a lower incidence of Helicobacter pylori-associated gastric cancer compared to individuals from Tuquerres in the high Andes. This is despite nearly universal prevalence of H. pylori infection and chronic gastritis. METHODS H. pylori infection was confirmed by Steiner stain and serology using African and European-origin strains. Gastric histology and serum inflammatory biomarkers in dyspeptic Tumaco or Tuquerres patients were evaluated to predict progression of gastric lesions. RESULTS H. pylori infection was nearly universal by Steiner stain and serology. IgG response to European-origin H. pylori strains were greater than African-origin. High gastric cancer-risk Tuquerres patients, compared to low-risk Tumaco, had significant odds ratios for lesion progression associated with serum IL-5, trefoil factor 3 (TFF3), and low pepsinogen I/II ratio. Sensitivity and specificity for these parameters was 63.8% and 67.9%, respectively, with correctly classifying patients at 66.7%. Most odds ratios for 26 other biomarkers were significant for the town of residency, indicating an environmental impact on Tumaco patients associated with decreased lesion progression. CONCLUSION An IL-5 association with progression of gastric lesions is novel and could be evaluated in addition to TFF3 and pepsinogen I/II ratio as a non-invasive prognostic screen. Results suggest Tumaco patients were exposed to infectious diseases beyond H. pylori such as the documented high incidence of helminthiasis and toxoplasmosis. IMPACT Results support a prior recommendation to evaluate TFF3 and pepsinogen I/II together to predict aggressive gastric histology. Our data indicate IL-5 should be further evaluated as prognostic parameter.
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Affiliation(s)
- Mark T Whary
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
| | | | - Luis E Bravo
- Department of Pathology, Universidad Del Valle, Cali, Colombia
| | - Jennifer L Lofgren
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Kvin Lertpiriyapong
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Robertino Mera-Giler
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M Blanca Piazuelo
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Pelayo Correa
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Richard M Peek
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA; Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA; Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Keith T Wilson
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA; Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA; Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - James G Fox
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA, USA; Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
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37
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Sierra JC, Piazuelo MB, Luis PB, Barry DP, Allaman MM, Asim M, Sebrell TA, Finley JL, Rose KL, Hill S, Holshouser SL, Casero RA, Cleveland JL, Woster PM, Schey KL, Bimczok D, Schneider C, Gobert AP, Wilson KT. Spermine oxidase mediates Helicobacter pylori-induced gastric inflammation, DNA damage, and carcinogenic signaling. Oncogene 2020; 39:4465-4474. [PMID: 32350444 PMCID: PMC7260102 DOI: 10.1038/s41388-020-1304-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 04/14/2020] [Accepted: 04/16/2020] [Indexed: 01/05/2023]
Abstract
Helicobacter pylori infection is the main risk factor for the development of gastric cancer, the third leading cause of cancer death worldwide. H. pylori colonizes the human gastric mucosa and persists for decades. The inflammatory response is ineffective in clearing the infection, leading to disease progression that may result in gastric adenocarcinoma. We have shown that polyamines are regulators of the host response to H. pylori, and that spermine oxidase (SMOX), which metabolizes the polyamine spermine into spermidine plus H2O2, is associated with increased human gastric cancer risk. We now used a molecular approach to directly address the role of SMOX, and demonstrate that Smox-deficient mice exhibit significant reductions of gastric spermidine levels and H. pylori-induced inflammation. Proteomic analysis revealed that cancer was the most significantly altered functional pathway in Smox-/- gastric organoids. Moreover, there was also less DNA damage and β-catenin activation in H. pylori-infected Smox-/- mice or gastric organoids, compared to infected wild-type animals or gastroids. The link between SMOX and β-catenin activation was confirmed in human gastric organoids that were treated with a novel SMOX inhibitor. These findings indicate that SMOX promotes H. pylori-induced carcinogenesis by causing inflammation, DNA damage, and activation of β-catenin signaling.
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Affiliation(s)
- Johanna C Sierra
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - M Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Paula B Luis
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, 37232, USA
| | - Daniel P Barry
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Margaret M Allaman
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Mohammad Asim
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Thomas A Sebrell
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT, 59717, USA
| | - Jordan L Finley
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Kristie L Rose
- Department of Biochemistry, Mass Spectrometry Research Center, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Salisha Hill
- Department of Biochemistry, Mass Spectrometry Research Center, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Steven L Holshouser
- Department of Drug Discovery and Biomedical Sciences, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Robert A Casero
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, MD, 21287, USA
| | - John L Cleveland
- Department of Tumor Biology, Moffitt Cancer Center and Research Institute, Tampa, FL, 33612, USA
| | - Patrick M Woster
- Department of Drug Discovery and Biomedical Sciences, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Kevin L Schey
- Department of Biochemistry, Mass Spectrometry Research Center, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Diane Bimczok
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT, 59717, USA
| | - Claus Schneider
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN, 37232, USA
| | - Alain P Gobert
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Keith T Wilson
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, TN, 37232, USA.
- Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, 37232, USA.
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38
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Nazmi A, Hoek KL, Tansie S, Piazuelo MB, Olivares-Villagómez D. Innate CD8αα cells orchestrate intraepithelial lymphocytes balance and protect against colitis. The Journal of Immunology 2020. [DOI: 10.4049/jimmunol.204.supp.84.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Innate CD8αα+ cells (iCD8α) are TCRneg intraepithelial lymphocytes (IEL) that possess immune functions such as phagocytosis, bacteria killing, and antigen processing and presentation. Recently our group and others reported that iCD8α cells promote IEL survival via osteopontin. Herein, we investigate whether iCD8α cells sustain intestinal homeostasis through maintaining IEL balance.
We compared the number of IEL in the colon of WT and iCD8α-deficient mice (E8i−/−). E8i is an enhancer required for CD8α homodimer expression in IEL. Despite the dramatic reduction of CD8αα expression on TCRαβ+ and TCRgd+ IEL in E8i−/− mice, the total cell numbers were comparable to WT mice. E8i−/− mice had higher number of TCRβ+CD4+, and lower number of TCRβ+CD4+CD8α+ and TCRβ+CD8αα+ IEL. There were no differences in TCRβ+CD8αβ+ and TCRneg IEL.
Then, we tested the role of iCD8α cells during intestinal inflammation in different colitis models. iCD8α-deficient mice had higher susceptibility to Citrobacter rodentium infection as indicated by increased weight loss, disease index, and bacterial load in the colon compared to WT mice. Similar results were obtained using DSS-induced colitis: E8i−/− mice presented increased shortening of colon and pathological scores. Finally, we performed adoptive transfer of naïve CD4 T cells into Rag-2−/− and E8i−/−Rag-2−/− mice. iCD8α-deficient mice rapidly developed chronic colitis, manifested by sever weight loss and bloody diarrhea. These mice also reconstituted with higher number of donor-derived CD4 T cells that mostly developed into pathogenic TCRβ+CD4+ IEL.
Our results indicate that iCD8α cells have a critical role in the maintenance of IEL homeostasis and healthy intestines.
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Affiliation(s)
- Ali Nazmi
- 1Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center
| | - Kristen L. Hoek
- 1Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center
| | - Stephen Tansie
- 2College of Basic and Applied Sciences, Middle Tennessee State University
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39
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Hoek KL, Nazmi A, Singh K, Piazuelo MB, Wilson K, Olivares-Villagómez D. Role of Granzyme B in mucosal immune responses. The Journal of Immunology 2020. [DOI: 10.4049/jimmunol.204.supp.158.19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Granzyme B is a serine protease initially described in cell-mediated cytotoxicity. Recently, granzyme B has been found to be produced by non-cytotoxic cells, and elevated levels of granzyme B or cells expressing it have been implicated in many disease states. To investigate the role of granzyme B in mucosal immune responses, we utilized two models of intestinal inflammation: infection with Citrobacter rodentium, a colon-specific bacterium that induces intestinal inflammation in mice; and a T cell transfer model of colitis. Following infection, C. rodentium colonization was observed in the colon of both wt and grzB−/− animals at 14d post-infection. While wt mice displayed no overt signs of infection, severe weight loss as well as disease-associated changes in appearance and colon pathology were observed in grzB−/− mice at 10–14d post-infection. Similarly, adoptive transfer of grzB−/− CD4+CD45RBhi naïve effector T cells into rag2−/− recipients led to severe weight loss and disease-associated changes in appearance by 21d post-transfer, while rag2−/− recipients of wt CD4+CD45RBhi T cells were relatively unaffected at this early time point. Interestingly, disease in recipients of grzB−/− T cells corresponded with increased IL-17+ CD4+ T cells in the mesenteric lymph nodes and colon lamina propria relative to recipients that received wt T cells. These data suggest that granzyme B functions in a protective manner during intestinal inflammation, possibly playing a role in T cell differentiation by holding generation of IL-17-producing T cells in check.
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Affiliation(s)
- Kristen L Hoek
- 1Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center
| | - Ali Nazmi
- 1Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center
| | - Kshipra Singh
- 2Department of Medicine, Vanderbilt University Medical Center
| | | | - Keith Wilson
- 2Department of Medicine, Vanderbilt University Medical Center
| | - Danyvid Olivares-Villagómez
- 1Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center
- 3Vanderbilt Institute for Infection, Immunology and Inflammation
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40
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Nazmi A, Greer MJ, Hoek KL, Piazuelo MB, Weitkamp JH, Olivares-Villagómez D. Osteopontin and iCD8α Cells Promote Intestinal Intraepithelial Lymphocyte Homeostasis. J Immunol 2020; 204:1968-1981. [PMID: 32102904 DOI: 10.4049/jimmunol.1901168] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 01/23/2020] [Indexed: 12/19/2022]
Abstract
Intestinal intraepithelial lymphocytes (IEL) comprise a diverse population of cells residing in the epithelium at the interface between the intestinal lumen and the sterile environment of the lamina propria. Because of this anatomical location, IEL are considered critical components of intestinal immune responses. Indeed, IEL are involved in many different immunological processes, ranging from pathogen control to tissue stability. However, despite their critical importance in mucosal immune responses, very little is known about the homeostasis of different IEL subpopulations. The phosphoprotein osteopontin is important for critical physiological processes, including cellular immune responses, such as survival of Th17 cells and homeostasis of NK cells among others. Because of its impact in the immune system, we investigated the role of osteopontin in the homeostasis of IEL. In this study, we report that mice deficient in the expression of osteopontin exhibit reduced numbers of the IEL subpopulations TCRγδ+, TCRβ+CD4+, TCRβ+CD4+CD8α+, and TCRβ+CD8αα+ cells in comparison with wild-type mice. For some IEL subpopulations, the decrease in cell numbers could be attributed to apoptosis and reduced cell division. Moreover, we show in vitro that exogenous osteopontin stimulates the survival of murine IEL subpopulations and unfractionated IEL derived from human intestines, an effect mediated by CD44, a known osteopontin receptor. We also show that iCD8α IEL but not TCRγδ+ IEL, TCRβ+ IEL, or intestinal epithelial cells, can promote survival of different IEL populations via osteopontin, indicating an important role for iCD8α cells in the homeostasis of IEL.
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Affiliation(s)
- Ali Nazmi
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232
| | - Michael J Greer
- Department of Biomedical Informatics, Vanderbilt University, Nashville, TN 37232
| | - Kristen L Hoek
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232
| | - M Blanca Piazuelo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232
| | - Joern-Hendrik Weitkamp
- Department of Pediatrics, Vanderbilt University Medical Center, Monroe Carell Jr. Children's Hospital, Nashville, TN 37232; and
| | - Danyvid Olivares-Villagómez
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232; .,Vanderbilt Institute for Infection, Immunology and Inflammation, Vanderbilt University Medical Center, Nashville, TN 37232
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41
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Affiliation(s)
- Shailja C. Shah
- Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Andrew J. Gawron
- Salt Lake City Specialty Care Center of Innovation and Gastroenterology Section, VA Salt Lake City Health Care System, Salt Lake City, Utah
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Utah School of Medicine, Salt Lake City, Utah
| | - Reem Mustafa
- Division of Nephrology and Hypertension, University of Kansas Medical Center, Kansas City, Kansas
| | - M. Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee
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42
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Wroblewski LE, Choi E, Petersen C, Delgado AG, Piazuelo MB, Romero-Gallo J, Lantz TL, Zavros Y, Coffey RJ, Goldenring JR, Zemper AE, Peek RM. Targeted mobilization of Lrig1 + gastric epithelial stem cell populations by a carcinogenic Helicobacter pylori type IV secretion system. Proc Natl Acad Sci U S A 2019; 116:19652-19658. [PMID: 31488717 PMCID: PMC6765285 DOI: 10.1073/pnas.1903798116] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Helicobacter pylori-induced gastritis is the strongest risk factor for gastric adenocarcinoma, a malignancy preceded by a series of well-defined histological stages, including metaplasia. One microbial constituent that augments cancer risk is the cag type 4 secretion system (T4SS), which translocates the oncoprotein CagA into host cells. Aberrant stem cell activation is linked to carcinogenesis, and Lrig1 (leucine-rich repeats and Ig-like domains 1) marks a distinct population of progenitor cells. We investigated whether microbial effectors with carcinogenic potential influence Lrig1 progenitor cells ex vivo and via lineage expansion within H. pylori-infected gastric mucosa. Lineage tracing was induced in Lrig1-CreERT2/+;R26R-YFP/+ (Lrig1/YFP) mice that were uninfected or subsequently infected with cag+H. pylori or an isogenic cagE- mutant (nonfunctional T4SS). In contrast to infection with wild-type (WT) H. pylori for 2 wk, infection for 8 wk resulted in significantly increased inflammation and proliferation in the corpus and antrum compared with uninfected or mice infected with the cagE- mutant. WT H. pylori-infected mice harbored significantly higher numbers of Lrig1/YFP epithelial cells that coexpressed UEA1 (surface cell marker). The number of cells coexpressing intrinsic factor (chief cell marker), YFP (lineage marker), and GSII lectin (spasmolytic polypeptide-expressing metaplasia marker) were increased only by WT H. pylori In human samples, Lrig1 expression was significantly increased in lesions with premalignant potential compared with normal mucosa or nonatrophic gastritis. In conclusion, chronic H. pylori infection stimulates Lrig1-expressing progenitor cells in a cag-dependent manner, and these reprogrammed cells give rise to a full spectrum of differentiated cells.
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Affiliation(s)
- Lydia E Wroblewski
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232;
| | - Eunyoung Choi
- Nashville VA Medical Center, US Department of Veterans Affairs, Nashville, TN 37212
- Section of Surgical Sciences, Vanderbilt University Medical Center, Nashville, TN 37232
- Epithelial Biology Center, Vanderbilt University Medical Center, Nashville, TN 37232
| | - Christine Petersen
- Section of Surgical Sciences, Vanderbilt University Medical Center, Nashville, TN 37232
- Epithelial Biology Center, Vanderbilt University Medical Center, Nashville, TN 37232
| | - Alberto G Delgado
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232
| | - M Blanca Piazuelo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232
| | - Judith Romero-Gallo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232
| | - Tyler L Lantz
- Department of Biology, University of Oregon, Eugene, OR 97403
- Institute of Molecular Biology, University of Oregon, Eugene, OR 97403
| | - Yana Zavros
- Department of Pharmacology and System Physiology, University of Cincinnati, Cincinnati, OH 45221
| | - Robert J Coffey
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232
- Nashville VA Medical Center, US Department of Veterans Affairs, Nashville, TN 37212
- Epithelial Biology Center, Vanderbilt University Medical Center, Nashville, TN 37232
- Department of Cell and Developmental Biology, Vanderbilt University Medical Center, Nashville, TN 37232
- Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN 37232
| | - James R Goldenring
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232
- Nashville VA Medical Center, US Department of Veterans Affairs, Nashville, TN 37212
- Section of Surgical Sciences, Vanderbilt University Medical Center, Nashville, TN 37232
- Epithelial Biology Center, Vanderbilt University Medical Center, Nashville, TN 37232
- Department of Cell and Developmental Biology, Vanderbilt University Medical Center, Nashville, TN 37232
| | - Anne E Zemper
- Department of Biology, University of Oregon, Eugene, OR 97403
- Institute of Molecular Biology, University of Oregon, Eugene, OR 97403
| | - Richard M Peek
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN 37232;
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232
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43
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Soutto M, Chen Z, Bhat AA, Wang L, Zhu S, Gomaa A, Bates A, Bhat NS, Peng D, Belkhiri A, Piazuelo MB, Washington MK, Steven XC, Peek R, El-Rifai W. Activation of STAT3 signaling is mediated by TFF1 silencing in gastric neoplasia. Nat Commun 2019; 10:3039. [PMID: 31292446 PMCID: PMC6620282 DOI: 10.1038/s41467-019-11011-4] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 06/12/2019] [Indexed: 01/01/2023] Open
Abstract
TFF1, a secreted protein, plays an essential role in keeping the integrity of gastric mucosa and its barrier function. Loss of TFF1 expression in the TFF1-knockout (KO) mouse leads to a pro-inflammatory phenotype with a cascade of gastric lesions that include low-grade dysplasia, high-grade dysplasia, and adenocarcinomas. In this study, we demonstrate nuclear localization of p-STATY705, with significant overexpression of several STAT3 target genes in gastric glands from the TFF1-KO mice. We also show frequent loss of TFF1 with nuclear localization of STAT3 in human gastric cancers. The reconstitution of TFF1 protein in human gastric cancer cells and 3D gastric glands organoids from TFF1-KO mice abrogates IL6-induced nuclear p-STAT3Y705 expression. Reconstitution of TFF1 inhibits IL6-induced STAT3 transcription activity, suppressing expression of its target genes. TFF1 blocks IL6Rα-GP130 complex formation through interfering with binding of IL6 to its receptor IL6Rα. These findings demonstrate a functional role of TFF1 in suppressing gastric tumorigenesis by impeding the IL6-STAT3 pro-inflammatory signaling axis. Trefoil factor 1 (TFF1) is a protein secreted by the gastric mucosa that protects against gastric tumourigenesis. Here, the authors show that TFF1 inhibits the oncogenic inflammatory response and IL-6-mediated STAT3 activation by interfering with the binding of IL6 to its receptor IL6Rα.
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Affiliation(s)
- Mohammed Soutto
- Department of Veterans Affairs, Miami Healthcare System, Miami, FL, USA.,Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Zheng Chen
- Department of Veterans Affairs, Miami Healthcare System, Miami, FL, USA.,Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Ajaz A Bhat
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.,Division of Translational Medicine, Research Branch, Sidra Medicine, Doha, Qatar
| | - Lihong Wang
- Department of Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Shoumin Zhu
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Ahmed Gomaa
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Andreia Bates
- Department of Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Nadeem S Bhat
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Dunfa Peng
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Abbes Belkhiri
- Department of Surgery, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M Blanca Piazuelo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M Kay Washington
- Department of Pathology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Xi Chen Steven
- Department of Public Health Sciences, Division of Biostatistics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Richard Peek
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Wael El-Rifai
- Department of Veterans Affairs, Miami Healthcare System, Miami, FL, USA. .,Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA. .,Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL, USA.
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44
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Zhu S, Soutto M, Chen Z, Piazuelo MB, Washington MK, Belkhiri A, Zaika A, Peng D, El-Rifai W. Activation of IGF1R by DARPP-32 promotes STAT3 signaling in gastric cancer cells. Oncogene 2019; 38:5805-5816. [PMID: 31235784 PMCID: PMC6639157 DOI: 10.1038/s41388-019-0843-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 02/25/2019] [Accepted: 02/25/2019] [Indexed: 01/12/2023]
Abstract
Dopamine and cAMP-regulated phosphoprotein, Mr 32000 (DARPP-32), is frequently overexpressed in early stages of gastric cancers. We utilized in vitro assays, 3D gastric gland organoid cultures, mouse models, and human tissue samples to investigate the biological and molecular impact of DARPP-32 on activation of IGF1R and STAT3 signaling and gastric tumorigenesis. DARPP-32 enhanced phosphorylation of IGF1R (Y1135), a step that was critical for STAT3 phosphorylation at Y705, nuclear localization, and transcription activation. By using proximity ligation and co-immunoprecipitation assays, we found that IGF1R and DARPP-32 co-existed in the same protein complex. Binding of DARPP-32 to IGF1R promoted IGF1R phosphorylation with subsequent activation of downstream SRC and STAT3. Analysis of gastric tissues from the TFF1 knockout (KO) mouse model of gastric neoplasia, demonstrated phosphorylation of STAT3 in the early stages of gastric tumorigenesis. By crossing the TFF1 KO mice with DARPP-32 (DP) knockout (KO) mice, that have normal stomach, we obtained double knockout (TFF1 KO/DP KO). The gastric mucosa from the double KO mice did not show phosphorylation of IGF1R or STAT3. In addition, the TFF1 KO/DP KO mice had a significant delay in developing neoplastic gastric lesions. Analysis of human gastric cancer tissue microarrays, showed high levels of DARPP-32 and positive immunostaining for nuclear STAT3 in cancer tissues, as compared to non-cancer histologically normal tissues. In summary, the DARPP-32-IGF1R signaling axis plays a key role in regulating the STAT3 signaling, a critical step in gastric tumorigenesis.
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Affiliation(s)
- Shoumin Zhu
- Department of Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Mohammed Soutto
- Department of Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
- Department of Veterans Affairs, Miami Healthcare System, Miami, Florida, USA
| | - Zheng Chen
- Department of Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
- Department of Veterans Affairs, Miami Healthcare System, Miami, Florida, USA
| | - M. Blanca Piazuelo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - M. Kay Washington
- Department of Pathology, and Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Abbes Belkhiri
- Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Alexander Zaika
- Department of Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
- Department of Veterans Affairs, Miami Healthcare System, Miami, Florida, USA
- Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida, USA
| | - Dunfa Peng
- Department of Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
- Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida, USA
| | - Wael El-Rifai
- Department of Surgery, Miller School of Medicine, University of Miami, Miami, Florida, USA
- Department of Veterans Affairs, Miami Healthcare System, Miami, Florida, USA
- Sylvester Comprehensive Cancer Center, University of Miami, Miami, Florida, USA
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45
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Nazmi A, Greer MJ, Hoek KL, Piazuelo MB, Weitkamp JH, Olivares-Villagomez D. Osteopontin promotes survival of intestinal intraepithelial lymphocytes and protects against colitis. The Journal of Immunology 2019. [DOI: 10.4049/jimmunol.202.supp.192.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
Intestinal intraepithelial lymphocytes (IEL) comprise a diverse population of cells that reside in the epithelium at the interface between the contents of the intestinal lumen and the sterile environment of the lamina propria. Because of this anatomical location, IEL are considered critical components of intestinal immune responses. Indeed, IEL are involved in many different immunological processes ranging from pathogen control to tissue stability. However, maintenance of IEL homeostasis is incompletely understood. In this report, we present evidence that osteopontin, a glycophosphoprotein with diverse roles in biomineralization, cell-mediated immunity, and inflammation, is important for maintaining normal levels of IEL. Mice in which the osteopontin gene (Spp-1) is disrupted present decreased levels of IEL subtypes, such as TCRαβ and TCRγδ IEL in the intestine, an effect not observed for lymphocytes in other immune compartments such as spleen or lamina propria, indicating an epithelium-specific effect. In vitro experiments show that mouse and human IEL survival is improved by culture with recombinant osteopontin. In vivo and in vitro IEL survival studies show that CD44, a ligand for osteopontin, is critical for the capacity of osteopontin to promote IEL survival. Adoptive transfer of total T cells (including Tregs) from wild type mice into Spp-1−/−Rag-2−/− mice results in the development of exacerbated intestinal inflammation, as compared with Rag-2−/− recipient mice. Further analyses show that osteopontin-deficiency results in decreased survival of Foxp3-expressing T cells. These findings support osteopontin’s critical role in IEL homeostasis and make it a potential target for curbing intestinal inflammation.
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Affiliation(s)
- Ali Nazmi
- 1Vanderbilt University Medical Center
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Singh K, Gobert AP, Coburn LA, Barry DP, Allaman M, Asim M, Luis PB, Schneider C, Milne GL, Boone HH, Shilts MH, Washington MK, Das SR, Piazuelo MB, Wilson KT. Dietary Arginine Regulates Severity of Experimental Colitis and Affects the Colonic Microbiome. Front Cell Infect Microbiol 2019; 9:66. [PMID: 30972302 PMCID: PMC6443829 DOI: 10.3389/fcimb.2019.00066] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 03/04/2019] [Indexed: 12/11/2022] Open
Abstract
There is great interest in safe and effective alternative therapies that could benefit patients with inflammatory bowel diseases (IBD). L-arginine (Arg) is a semi-essential amino acid with a variety of physiological effects. In this context, our aim was to investigate the role of dietary Arg in experimental colitis. We used two models of colitis in C57BL/6 mice, the dextran sulfate sodium (DSS) model of injury and repair, and Citrobacter rodentium infection. Animals were given diets containing (1) no Arg (Arg0), 6.4 g/kg (ArgNL), or 24.6 g/kg Arg (ArgHIGH); or (2) the amino acids downstream of Arg: 28 g/kg L-ornithine (OrnHIGH) or 72 g/kg L-proline (ProHIGH). Mice with DSS colitis receiving the ArgHIGH diet had increased levels of Arg, Orn, and Pro in the colon and improved body weight loss, colon length shortening, and histological injury compared to ArgNL and Arg0 diets. Histology was improved in the ArgNL vs. Arg0 group. OrnHIGH or ProHIGH diets did not provide protection. Reduction in colitis with ArgHIGH diet also occurred in C. rodentium-infected mice. Diversity of the intestinal microbiota was significantly enhanced in mice on the ArgHIGH diet compared to the ArgNL or Arg0 diets, with increased abundance of Bacteroidetes and decreased Verrucomicrobia. In conclusion, dietary supplementation of Arg is protective in colitis models. This may occur by restoring overall microbial diversity and Bacteroidetes prevalence. Our data provide a rationale for Arg as an adjunctive therapy in IBD.
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Affiliation(s)
- Kshipra Singh
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Alain P. Gobert
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Lori A. Coburn
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, United States
- Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, United States
| | - Daniel P. Barry
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Margaret Allaman
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Mohammad Asim
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Paula B. Luis
- Department of Pharmacology, Vanderbilt University Medical School, Nashville, TN, United States
- Division of Clinical Pharmacology, Vanderbilt University Medical School, Nashville, TN, United States
| | - Claus Schneider
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, United States
- Department of Pharmacology, Vanderbilt University Medical School, Nashville, TN, United States
- Division of Clinical Pharmacology, Vanderbilt University Medical School, Nashville, TN, United States
| | - Ginger L. Milne
- Division of Clinical Pharmacology, Vanderbilt University Medical School, Nashville, TN, United States
| | - Helen H. Boone
- Division of Infectious Diseases, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Meghan H. Shilts
- Division of Infectious Diseases, Vanderbilt University Medical Center, Nashville, TN, United States
| | - M. Kay Washington
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Suman R. Das
- Division of Infectious Diseases, Vanderbilt University Medical Center, Nashville, TN, United States
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
| | - M. Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Keith T. Wilson
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
- Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, United States
- Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, United States
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, United States
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Chen Z, Li Z, Soutto M, Wang W, Piazuelo MB, Zhu S, Guo Y, Maturana MJ, Corvalan AH, Chen X, Xu Z, El-Rifai WM. Integrated Analysis of Mouse and Human Gastric Neoplasms Identifies Conserved microRNA Networks in Gastric Carcinogenesis. Gastroenterology 2019; 156:1127-1139.e8. [PMID: 30502323 PMCID: PMC6409191 DOI: 10.1053/j.gastro.2018.11.052] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 11/20/2018] [Accepted: 11/21/2018] [Indexed: 12/17/2022]
Abstract
BACKGROUND & AIMS microRNAs (miRNAs) are small noncoding RNAs that bind to the 3' untranslated regions of mRNAs to promote their degradation or block their translation. Mice with disruption of the trefoil factor 1 gene (Tff1) develop gastric neoplasms. We studied these mice to identify conserved miRNA networks involved in gastric carcinogenesis. METHODS We performed next-generation miRNA sequencing analysis of normal gastric tissues (based on histology) from patients without evidence of gastric neoplasm (n = 64) and from TFF1-knockout mice (n = 22). We validated our findings using 270 normal gastric tissues (including 61 samples from patients without evidence of neoplastic lesions) and 234 gastric tumor tissues from 3 separate cohorts of patients and from mice. We performed molecular and functional assays using cell lines (MKN28, MKN45, STKM2, and AGS cells), gastric organoids, and mice with xenograft tumors. RESULTS We identified 117 miRNAs that were significantly deregulated in mouse and human gastric tumor tissues compared with nontumor tissues. We validated changes in levels of 6 miRNAs by quantitative real-time polymerase chain reaction analyses of neoplastic gastric tissues from mice (n = 39) and 3 independent patient cohorts (n = 332 patients total). We found levels of MIR135B-5p, MIR196B-5p, and MIR92A-5p to be increased in tumor tissues, whereas levels of MIR143-3p, MIR204-5p, and MIR133-3p were decreased in tumor tissues. Levels of MIR143-3p were reduced not only in gastric cancer tissues but also in normal tissues adjacent to tumors in humans and low-grade dysplasia in mice. Transgenic expression of MIR143-3p in gastric cancer cell lines reduced their proliferation and restored their sensitivity to cisplatin. AGS cells with stable transgenic expression of MIR143-3p grew more slowly as xenograft tumors in mice than control AGS cells; tumor growth from AGS cells that expressed MIR143-3p, but not control cells, was sensitive to cisplatin. We identified and validated bromodomain containing 2 (BRD2) as a direct target of MIR143-3p; increased levels of BRD2 in gastric tumors was associated with shorter survival times for patients. CONCLUSIONS In an analysis of miRNA profiles of gastric tumors from mice and human patients, we identified a conserved signature associated with the early stages of gastric tumorigenesis. Strategies to restore MIR143-3p or inhibit BRD2 might be developed for treatment of gastric cancer.
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Affiliation(s)
- Zheng Chen
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China; Department of Surgery, Miller School of Medicine, University of Miami, Miami, Florida
| | - Zheng Li
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Mohammed Soutto
- Department of Surgery, Miller School of Medicine, University of Miami, Miami, Florida; Department of Veterans Affairs, Miami Healthcare System, Miami, Florida
| | - Weizhi Wang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - M Blanca Piazuelo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Shoumin Zhu
- Department of Surgery, Miller School of Medicine, University of Miami, Miami, Florida
| | - Yan Guo
- Bioinformatics Shared Resources, University of New Mexico Comprehensive Cancer Center, New Mexico
| | - Maria J Maturana
- Advanced Center for Chronic Diseases, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - Alejandro H Corvalan
- Advanced Center for Chronic Diseases, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - Xi Chen
- Department of Public Health Sciences, Miller School of Medicine, University of Miami, Miami, Florida
| | - Zekuan Xu
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China.
| | - Wael M El-Rifai
- Department of Surgery, Miller School of Medicine, University of Miami, Miami, Florida; Department of Veterans Affairs, Miami Healthcare System, Miami, Florida; Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, Florida.
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Noto JM, Rose KL, Hachey AJ, Delgado AG, Romero-Gallo J, Wroblewski LE, Schneider BG, Shah SC, Cover TL, Wilson KT, Israel DA, Roa JC, Schey KL, Zavros Y, Piazuelo MB, Peek RM. Carcinogenic Helicobacter pylori Strains Selectively Dysregulate the In Vivo Gastric Proteome, Which May Be Associated with Stomach Cancer Progression. Mol Cell Proteomics 2019; 18:352-371. [PMID: 30455363 PMCID: PMC6356085 DOI: 10.1074/mcp.ra118.001181] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Indexed: 12/11/2022] Open
Abstract
Helicobacter pylori is the strongest risk factor for gastric cancer. Initial interactions between H. pylori and its host originate at the microbial-gastric epithelial cell interface, and contact between H. pylori and gastric epithelium activates signaling pathways that drive oncogenesis. One microbial constituent that increases gastric cancer risk is the cag pathogenicity island, which encodes a type IV secretion system that translocates the effector protein, CagA, into host cells. We previously demonstrated that infection of Mongolian gerbils with a carcinogenic cag+H. pylori strain, 7.13, recapitulates many features of H. pylori-induced gastric cancer in humans. Therefore, we sought to define gastric proteomic changes induced by H. pylori that are critical for initiation of the gastric carcinogenic cascade. Gastric cell scrapings were harvested from H. pylori-infected and uninfected gerbils for quantitative proteomic analyses using isobaric tags for relative and absolute quantitation (iTRAQ). Quantitative proteomic analysis of samples from two biological replicate experiments quantified a total of 2764 proteins, 166 of which were significantly altered in abundance by H. pylori infection. Pathway mapping identified significantly altered inflammatory and cancer-signaling pathways that included Rab/Ras signaling proteins. Consistent with the iTRAQ results, RABEP2 and G3BP2 were significantly up-regulated in vitro, ex vivo in primary human gastric monolayers, and in vivo in gerbil gastric epithelium following infection with H. pylori strain 7.13 in a cag-dependent manner. Within human stomachs, RABEP2 and G3BP2 expression in gastric epithelium increased in parallel with the severity of premalignant and malignant lesions and was significantly elevated in intestinal metaplasia and dysplasia, as well as gastric adenocarcinoma, compared with gastritis alone. These results indicate that carcinogenic strains of H. pylori induce dramatic and specific changes within the gastric proteome in vivo and that a subset of altered proteins within pathways with oncogenic potential may facilitate the progression of gastric carcinogenesis in humans.
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Affiliation(s)
- Jennifer M Noto
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Kristie L Rose
- Department of Biochemistry, Mass Spectrometry Research Center, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Amanda J Hachey
- Department of Biochemistry, Mass Spectrometry Research Center, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Alberto G Delgado
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Judith Romero-Gallo
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Lydia E Wroblewski
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Barbara G Schneider
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Shailja C Shah
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Timothy L Cover
- Division of Infectious Diseases, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee;; Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee;; Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Keith T Wilson
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee;; Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee;; Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Dawn A Israel
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Juan Carlos Roa
- Department of Pathology, Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - Kevin L Schey
- Department of Biochemistry, Mass Spectrometry Research Center, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Yana Zavros
- Department of Pharmacology and System Physiology, University of Cincinnati, Cincinnati, Ohio
| | - M Blanca Piazuelo
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Richard M Peek
- Division of Gastroenterology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee;; Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee;.
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Noto JM, Chopra A, Loh JT, Romero-Gallo J, Piazuelo MB, Watson M, Leary S, Beckett AC, Wilson KT, Cover TL, Mallal S, Israel DA, Peek RM. Pan-genomic analyses identify key Helicobacter pylori pathogenic loci modified by carcinogenic host microenvironments. Gut 2018; 67:1793-1804. [PMID: 28924022 PMCID: PMC5857411 DOI: 10.1136/gutjnl-2017-313863] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 06/30/2017] [Accepted: 07/15/2017] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Helicobacter pylori is the strongest risk factor for gastric cancer; however, the majority of infected individuals do not develop disease. Pathological outcomes are mediated by complex interactions among bacterial, host and environmental constituents, and two dietary factors linked with gastric cancer risk are iron deficiency and high salt. We hypothesised that prolonged adaptation of H. pylori to in vivo carcinogenic microenvironments results in genetic modification important for disease. DESIGN Whole genome sequencing of genetically related H. pylori strains that differ in virulence and targeted H. pylori sequencing following prolonged exposure of bacteria to in vitro carcinogenic conditions were performed. RESULTS A total of 180 unique single nucleotide polymorphisms (SNPs) were identified among the collective genomes when compared with a reference H. pylori genome. Importantly, common SNPs were identified in isolates harvested from iron-depleted and high salt carcinogenic microenvironments, including an SNP within fur (FurR88H). To investigate the direct role of low iron and/or high salt, H. pylori was continuously cultured in vitro under low iron or high salt conditions to assess fur genetic variation. Exposure to low iron or high salt selected for the FurR88H variant after only 5 days. To extend these results, fur was sequenced in 339 clinical H. pylori strains. Among the isolates examined, 17% (40/232) of strains isolated from patients with premalignant lesions harboured the FurR88H variant, compared with only 6% (6/107) of strains from patients with non-atrophic gastritis alone (p=0.0034). CONCLUSION These results indicate that specific genetic variation arises within H. pylori strains during in vivo adaptation to conditions conducive for gastric carcinogenesis.
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Affiliation(s)
- Jennifer M Noto
- Department of Medicine, Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Abha Chopra
- Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Australia
| | - John T Loh
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Judith Romero-Gallo
- Department of Medicine, Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - M Blanca Piazuelo
- Department of Medicine, Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Mark Watson
- Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Australia
| | - Shay Leary
- Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Australia
| | - Amber C Beckett
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Keith T Wilson
- Department of Medicine, Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, Tennessee, USA,Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA,Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee, USA,Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Timothy L Cover
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA,Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee, USA,Department of Medicine, Division of Infectious Diseases, Vanderbilt University, Nashville, Tennessee, USA
| | - Simon Mallal
- Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Australia,Department of Medicine, Division of Infectious Diseases, Vanderbilt University, Nashville, Tennessee, USA
| | - Dawn A Israel
- Department of Medicine, Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Richard M Peek
- Department of Medicine, Division of Gastroenterology, Vanderbilt University Medical Center, Nashville, Tennessee, USA,Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA,Department of Cancer Biology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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50
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Coburn LA, Singh K, Asim M, Barry DP, Allaman MM, Al-Greene NT, Hardbower DM, Polosukhina D, Williams CS, Delgado AG, Piazuelo MB, Washington MK, Gobert AP, Wilson KT. Loss of solute carrier family 7 member 2 exacerbates inflammation-associated colon tumorigenesis. Oncogene 2018; 38:1067-1079. [PMID: 30202097 PMCID: PMC6377304 DOI: 10.1038/s41388-018-0492-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 07/19/2018] [Accepted: 08/17/2018] [Indexed: 01/06/2023]
Abstract
Solute carrier family 7 member 2 (SLC7A2, also known as CAT2) is an inducible transporter of the semi-essential amino acid L-arginine (L-Arg), which has been implicated in wound repair. We have reported that both SLC7A2 expression and L-Arg availability are decreased in colonic tissues from inflammatory bowel disease patients and that mice lacking Slc7a2 exhibit a more severe disease course when exposed to dextran sulfate sodium (DSS) compared to wild-type (WT) mice. Here, we present evidence that SLC7A2 plays a role in modulating colon tumorigenesis in the azoxymethane(AOM)-DSS model of colitis-associated carcinogenesis (CAC). SLC7A2 was localized predominantly to colonic epithelial cells in WT mice. Utilizing the AOM-DSS model, Slc7a2–/– mice had significantly increased tumor number, burden, and risk of high-grade dysplasia versus WT mice. Tumors from Slc7a2–/– mice exhibited significantly increased levels of the proinflammatory cytokines/chemokines IL-1β, CXCL1, CXCL5, IL-3, CXCL2, CCL3, and CCL4, but decreased levels of IL-4, CXCL9, and CXCL10 compared to tumors from WT mice. This was accompanied by a shift toward pro-tumorigenic M2 macrophage activation in Slc7a2-deficient mice, as marked by increased colonic CD11b+F4/80+ARG1+ cells with no alteration in CD11b+F4/80+NOS2+ cells by flow cytometry and immunofluorescence microscopy. The shift toward M2 macrophage activation was confirmed in bone marrow-derived macrophages from Slc7a2–/– mice. In bone marrow chimeras between Slc7a2–/– and WT mice, the recipient genotype drove the CAC phenotype, suggesting the importance of epithelial SLC7A2 in abrogating neoplastic risk. These data reveal that SLC7A2 has a significant role in the protection from CAC in the setting of chronic colitis, and suggest that the decreased SLC7A2 in inflammatory bowel disease (IBD) may contribute to CAC risk. Strategies to enhance L-Arg availability by supplementing L-Arg and/or increasing L-Arg uptake could represent a therapeutic approach in IBD to reduce the substantial long-term risk of colorectal carcinoma.
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Affiliation(s)
- Lori A Coburn
- Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA.,Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Kshipra Singh
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Mohammad Asim
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Daniel P Barry
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Margaret M Allaman
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Nicole T Al-Greene
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Dana M Hardbower
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Dina Polosukhina
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Christopher S Williams
- Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA.,Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA.,Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Alberto G Delgado
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M Blanca Piazuelo
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M Kay Washington
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Alain P Gobert
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Keith T Wilson
- Veterans Affairs Tennessee Valley Healthcare System, Nashville, TN, USA. .,Division of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA. .,Center for Mucosal Inflammation and Cancer, Vanderbilt University Medical Center, Nashville, TN, USA. .,Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA. .,Vanderbilt Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA.
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