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Zeng N, Wu F, Lu J, Li X, Lin S, Zhou L, Wang Z, Wu G, Huang Q, Zheng D, Gao J, Wu S, Chen X, Chen M, Meng F, Shang H, He Y, Chen P, Wei H, Li Z, Zhou H. High-fat diet impairs gut barrier through intestinal microbiota-derived reactive oxygen species. SCIENCE CHINA. LIFE SCIENCES 2024; 67:879-891. [PMID: 37202543 DOI: 10.1007/s11427-022-2283-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 02/19/2023] [Indexed: 05/20/2023]
Abstract
Gut barrier disruption is a key event in bridging gut microbiota dysbiosis and high-fat diet (HFD)-associated metabolic disorders. However, the underlying mechanism remains elusive. In the present study, by comparing HFD- and normal diet (ND)-treated mice, we found that the HFD instantly altered the composition of the gut microbiota and subsequently damaged the integrity of the gut barrier. Metagenomic sequencing revealed that the HFD upregulates gut microbial functions related to redox reactions, as confirmed by the increased reactive oxygen species (ROS) levels in fecal microbiota incubation in vitro and in the lumen, which were detected using in vivo fluorescence imaging. This microbial ROS-producing capability induced by HFD can be transferred through fecal microbiota transplantation (FMT) into germ-free (GF) mice, downregulating the gut barrier tight junctions. Similarly, mono-colonizing GF mice with an Enterococcus strain excelled in ROS production, damaged the gut barrier, induced mitochondrial malfunction and apoptosis of the intestinal epithelial cells, and exacerbated fatty liver, compared with other low-ROS-producing Enterococcus strains. Oral administration of recombinant high-stability-superoxide dismutase (SOD) significantly reduced intestinal ROS, protected the gut barrier, and improved fatty liver against the HFD. In conclusion, our study suggests that extracellular ROS derived from gut microbiota play a pivotal role in HFD-induced gut barrier disruption and is a potential therapeutic target for HFD-associated metabolic diseases.
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Affiliation(s)
- Nianyi Zeng
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Fan Wu
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Junqi Lu
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Xiang Li
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Shaomei Lin
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Lang Zhou
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Zhongwei Wang
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Guangyan Wu
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Qingfa Huang
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Daowen Zheng
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Jie Gao
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Shan Wu
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, 510515, China
| | - Xiaojiao Chen
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Muxuan Chen
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Fanguo Meng
- Redox Medical Center for Public Health, Soochow University, Suzhou, 215301, China
| | - Haitao Shang
- Precision Medicine Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China
| | - Yan He
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Peng Chen
- Department of Pathophysiology, Guangdong Provincial Key Laboratory of Proteomics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Hong Wei
- Precision Medicine Institute, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510080, China.
| | - Zhuang Li
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
| | - Hongwei Zhou
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
- Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, 510515, China.
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2
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Li Q, Zhang M, Qin S, Wen J, Shen X, Du Z. Dual oxidase 2 (duox 2) participates in the intestinal antibacterial innate immune responses of Procambarus clarkii by regulating ROS levels. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2024; 153:105116. [PMID: 38101716 DOI: 10.1016/j.dci.2023.105116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 12/09/2023] [Accepted: 12/10/2023] [Indexed: 12/17/2023]
Abstract
Dual oxidase (Duox) a member of the nicotinamide adenine dinucleotide phosphate oxidase (NOX) family can induce the production of reactive oxygen species (ROS). In vertebrates, the duox gene was indicated to be associated with the mucosal immunity. The roles of the duox gene in invertebrates were mainly studied in insects for the function of maintaining intestinal flora balance. In recent years, some studies have reported that Duox is involved in regulating the production of ROS and plays an important role in defending against the intestinal pathogen infection. However, the molecular mechanism has not been fully illuminated. In this study, a duox 2 involved in the production of H2O2 was identified for the first time in P. clarkii. Mature Pc-Duox 2 is a 7-transmembrane protein molecule that includes PHD, FAD, and NAD domains. Pc-duox 2 was mainly expressed in hemocytes and intestinal tissue. Its expression levels were obviously upregulated after intramuscular or oral infection with V. harveyi. In the RNAi assay, the upregulated trends of H2O2 and total ROS levels in crayfish intestine were significantly suppressed when Pc-duox 2 was knocked down. Compared with the slightly affected SOD activity, the upregulated CAT activity was suppressed more obviously in the crayfish intestine. Furthermore, Pc-duox 2 had an important effect on the maintenance of the structural stability of crayfish the intestine. Further research revealed that the knockdown of Pc-duox 2 could cause an obvious suppression in the upregulated levels of Toll signalling pathway-related genes, including Pc-toll 1, Pc-toll 3, Pc-dorsal, Pc-ALF 5, Pc-crustin 1, and Pc-lysozyme. Ultimately, these changes triggered the accelerated death of crayfish. Overall, we speculated that Pc-duox 2 played an important role in antibacterial innate immunity in the crayfish intestine by regulating the total ROS level.
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Affiliation(s)
- Qianqian Li
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China
| | - Mingda Zhang
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China
| | - Shiyu Qin
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China
| | - Jing Wen
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China
| | - Xiuli Shen
- Library, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China
| | - Zhiqiang Du
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China.
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3
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Chen Y, Li X, Sun R, Yang F, Tian W, Huang Q. Screening and experimental validation of diagnostic gene in ulcerative colitis with anti-TNF-α therapy. IUBMB Life 2024. [PMID: 38269750 DOI: 10.1002/iub.2807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 12/06/2023] [Indexed: 01/26/2024]
Abstract
In clinical practice, the diagnosis of ulcerative colitis (UC) mainly relies on a comprehensive analysis of a series of signs and symptoms of patients. The current biomarkers for diagnosis of UC and prognostic prediction of anti-TNF-α therapy are inaccurate. The present study aimed to perform an integrative analysis of gene expression profiles in patients with UC. A total of seven datasets from the GEO database that met our strict inclusion criteria were included. After identifying differentially expressed genes (DEGs) between UC patients and healthy individuals, the diagnostic and prognostic utility of the DEGs were then analyzed via least absolute shrinkage and selection operator and support-vector machine recursive feature elimination. Subgroup analyses of the treated and untreated groups, as well as the treatment-response group and non-response group, were also performed. Furthermore, the relationship between the expressions of UC-related genes and infiltration of immune cells in the course of treatment was also investigated. Immunohistochemical (IHC) assay was used to verify the gene expression in inflamed UC tissues. When considering all the applied methods, DUOX2, PI3, S100P, MMP7, and S100A8 had priority to be defined as the characteristic genes among DEGs. The area under curve (AUC) of the five genes, which were all consistently over-expressed, based on an external validation dataset, were all above 0.94 for UC diagnosis. Four of the five genes (DUOX2, PI3, MMP7, and S100A8) were down-regulated between treatment-responsive and nonresponsive patients. A significant difference was also observed concerning the infiltration of immune cells, including macrophage and neutrophil, between the two groups (treatment responsive and nonresponsive). The changes in the expression of DUOX2 and MMP7 based on the IHC assay were highly consistent with the results obtained in the current study. This confirmed the mild to moderate diagnostic and predictive value of DUOX2 and MMP7 in patients with UC. The conducted analyses showed that the expression profile of the five identified biomarkers accurately detects UC, whereas four of the five genes evidently predicted the response to anti-TNF-α therapy.
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Affiliation(s)
- Yuan Chen
- Research Institute of General Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, People's Republic of China
| | - Xinfang Li
- Research Institute of General Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, People's Republic of China
| | - Ran Sun
- Research Institute of General Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, People's Republic of China
| | - Fan Yang
- Research Institute of General Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, People's Republic of China
| | - Weiliang Tian
- Research Institute of General Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, People's Republic of China
| | - Qian Huang
- Research Institute of General Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, People's Republic of China
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4
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Li D, Zhong C, Yang M, He L, Chang H, Zhu N, Celniker SE, Threadgill DW, Snijders AM, Mao JH, Yuan Y. Genetic and microbial determinants of azoxymethane-induced colorectal tumor susceptibility in Collaborative Cross mice and their implication in human cancer. Gut Microbes 2024; 16:2341647. [PMID: 38659246 PMCID: PMC11057575 DOI: 10.1080/19490976.2024.2341647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 04/08/2024] [Indexed: 04/26/2024] Open
Abstract
The insights into interactions between host genetics and gut microbiome (GM) in colorectal tumor susceptibility (CTS) remains lacking. We used Collaborative Cross mouse population model to identify genetic and microbial determinants of Azoxymethane-induced CTS. We identified 4417 CTS-associated single nucleotide polymorphisms (SNPs) containing 334 genes that were transcriptionally altered in human colorectal cancers (CRCs) and consistently clustered independent human CRC cohorts into two subgroups with different prognosis. We discovered a set of genera in early-life associated with CTS and defined a 16-genus signature that accurately predicted CTS, the majority of which were correlated with human CRCs. We identified 547 SNPs associated with abundances of these genera. Mediation analysis revealed GM as mediators partially exerting the effect of SNP UNC3869242 within Duox2 on CTS. Intestine cell-specific depletion of Duox2 altered GM composition and contribution of Duox2 depletion to CTS was significantly influenced by GM. Our findings provide potential novel targets for personalized CRC prevention and treatment.
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Affiliation(s)
- Dan Li
- Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences, Hangzhou, ZJ, China
- Department of Medical Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, ZJ, China
| | - Chenhan Zhong
- Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences, Hangzhou, ZJ, China
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Mengyuan Yang
- Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences, Hangzhou, ZJ, China
| | - Li He
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Department of Hematology, Zhongnan Hospital, Wuhan University, Wuhan, China
| | - Hang Chang
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Berkeley Biomedical Data Science Center, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Ning Zhu
- Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences, Hangzhou, ZJ, China
| | - Susan E Celniker
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - David W Threadgill
- Texas A&M Institute for Genome Sciences and Society, Texas A&M University, College Station, TX, USA
- Department of Molecular and Cellular Medicine and Department of Biochemistry & Biophysics, Texas A&M University, College Station, TX, USA
| | - Antoine M Snijders
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Berkeley Biomedical Data Science Center, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Jian-Hua Mao
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
- Berkeley Biomedical Data Science Center, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Ying Yuan
- Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Key Laboratory of Molecular Biology in Medical Sciences, Hangzhou, ZJ, China
- Zhejiang Provincial Clinical Research Center for CANCER, Hangzhou, ZJ, China
- Cancer Center, Zhejiang University, Hangzhou, ZJ, China
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5
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Pfeilmeier S, Werz A, Ote M, Bortfeld-Miller M, Kirner P, Keppler A, Hemmerle L, Gäbelein CG, Petti GC, Wolf S, Pestalozzi CM, Vorholt JA. Leaf microbiome dysbiosis triggered by T2SS-dependent enzyme secretion from opportunistic Xanthomonas pathogens. Nat Microbiol 2024; 9:136-149. [PMID: 38172620 PMCID: PMC10769872 DOI: 10.1038/s41564-023-01555-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 11/13/2023] [Indexed: 01/05/2024]
Abstract
In healthy plants, the innate immune system contributes to maintenance of microbiota homoeostasis, while disease can be associated with microbiome perturbation or dysbiosis, and enrichment of opportunistic plant pathogens like Xanthomonas. It is currently unclear whether the microbiota change occurs independently of the opportunistic pathogens or is caused by the latter. Here we tested if protein export through the type-2 secretion system (T2SS) by Xanthomonas causes microbiome dysbiosis in Arabidopsis thaliana in immunocompromised plants. We found that Xanthomonas strains secrete a cocktail of plant cell wall-degrading enzymes that promote Xanthomonas growth during infection. Disease severity and leaf tissue degradation were increased in A. thaliana mutants lacking the NADPH oxidase RBOHD. Experiments with gnotobiotic plants, synthetic bacterial communities and wild-type or T2SS-mutant Xanthomonas revealed that virulence and leaf microbiome composition are controlled by the T2SS. Overall, a compromised immune system in plants can enrich opportunistic pathogens, which damage leaf tissues and ultimately cause microbiome dysbiosis by facilitating growth of specific commensal bacteria.
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Affiliation(s)
- Sebastian Pfeilmeier
- Institute of Microbiology, ETH Zurich, Zurich, Switzerland.
- Molecular Plant Pathology, Swammerdam Institute of Life Sciences, University of Amsterdam, Amsterdam, the Netherlands.
| | - Anja Werz
- Institute of Microbiology, ETH Zurich, Zurich, Switzerland
| | - Marine Ote
- Institute of Microbiology, ETH Zurich, Zurich, Switzerland
| | | | - Pascal Kirner
- Institute of Microbiology, ETH Zurich, Zurich, Switzerland
| | | | - Lucas Hemmerle
- Institute of Microbiology, ETH Zurich, Zurich, Switzerland
| | | | | | - Sarah Wolf
- Institute of Microbiology, ETH Zurich, Zurich, Switzerland
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6
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Kim S, Naziripour A, Prabhala P, Horváth V, Junaid A, Breault DT, Goyal G, Ingber DE. Direct therapeutic effect of sulfadoxine-pyrimethamine on nutritional deficiency-induced enteric dysfunction in a human Intestine Chip. EBioMedicine 2024; 99:104921. [PMID: 38101300 PMCID: PMC10733102 DOI: 10.1016/j.ebiom.2023.104921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 12/01/2023] [Accepted: 12/01/2023] [Indexed: 12/17/2023] Open
Abstract
BACKGROUND Sulfadoxine-pyrimethamine (SP) antimalarial therapy has been suggested to potentially increase the birth weight of infants in pregnant women in sub-Saharan Africa, independently of malarial infection. Here, we utilized female intestinal organoid-derived cells cultured within microfluidic Organ Chips to investigate whether SP could directly impact intestinal function and thereby improve the absorption of essential fats and nutrients crucial for fetal growth. METHODS Using a human organ-on-a-chip model, we replicated the adult female intestine with patient organoid-derived duodenal epithelial cells interfaced with human intestinal endothelial cells. Nutrient-deficient (ND) medium was perfused to simulate malnutrition, resulting in the appearance of enteric dysfunction indicators such as villus blunting, reduced mucus production, impaired nutrient absorption, and increased inflammatory cytokine secretion. SP was administered to these chips in the presence or absence of human peripheral blood mononuclear cells (PBMCs). FINDINGS Our findings revealed that SP treatment effectively reversed multiple intestinal absorptive abnormalities observed in malnourished female Intestine Chips, as validated by transcriptomic and proteomic analyses. SP also reduced the production of inflammatory cytokines and suppressed the recruitment of PBMCs in ND chips. INTERPRETATION Our results indicate that SP could potentially increase birth weights by preventing enteric dysfunction and suppressing intestinal inflammation. This underscores the potential of SP as a targeted intervention to improve maternal absorption, subsequently contributing to healthier fetal growth. While SP treatment shows promise in addressing malabsorption issues that can influence infant birth weight, we did not model pregnancy in our chips, and thus its usefulness for treatment of malnourished pregnant women requires further investigation through clinical trials. FUNDING The Bill and Melinda Gates Foundation, and the Wyss Institute for Biologically Inspired Engineering at Harvard University, and the HDDC Organoid Core of the P30 DK034854.
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Affiliation(s)
- Seongmin Kim
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Arash Naziripour
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Pranav Prabhala
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Viktor Horváth
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Abidemi Junaid
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - David T Breault
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA; Department of Endocrinology, Boston Children's Hospital, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA
| | - Girija Goyal
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Donald E Ingber
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA; Vascular Biology Program, Boston Children's Hospital and Department of Pathology, Harvard Medical School, Boston, MA 02115, USA; Harvard John A. Paulson School of Engineering and Applied Sciences, Cambridge, MA 02139, USA.
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7
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Yao T, Li L. The influence of microbiota on ferroptosis in intestinal diseases. Gut Microbes 2023; 15:2263210. [PMID: 37795964 PMCID: PMC10557621 DOI: 10.1080/19490976.2023.2263210] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 09/21/2023] [Indexed: 10/06/2023] Open
Abstract
Ferroptosis is a distinctive form of iron-dependent necrotic cell death, characterized by excessive lipid peroxidation on cellular membranes and compromised cellular antioxidant defenses. Multiple metabolic pathways, including iron and lipid metabolism, as well as antioxidant systems, contribute to the execution of ferroptosis. The gut microbiota exerts regulatory effects on ferroptosis through its microbial composition, biological functions, and metabolites. Notably, most pathogenic bacteria tend to promote ferroptosis, thereby inducing or exacerbating diseases, while most probiotics have been shown to protect against cell death. Given microbiota colonization in the gut, an intimate association is found between intestinal diseases and microbiota. This review consolidates the essential aspects of ferroptotic processes, emphasizing key molecules and delineating the intricate interplay between gut microbiota and ferroptosis. Moreover, this review underscores the potential utility of gut microbiota modulation in regulating ferroptosis for the treatment of intestinal diseases.
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Affiliation(s)
- Ting Yao
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou City, China
| | - Lanjuan Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, National Medical Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou City, China
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8
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Ward J, Zhang S, Sikora A, Michalski R, Yin Y, D'Alessio A, McLoughlin RM, Jaquet V, Fieschi F, Knaus UG. VEO-IBD NOX1 variant highlights a structural region essential for NOX/DUOX catalytic activity. Redox Biol 2023; 67:102905. [PMID: 37820403 PMCID: PMC10571032 DOI: 10.1016/j.redox.2023.102905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/14/2023] [Accepted: 09/25/2023] [Indexed: 10/13/2023] Open
Abstract
Inflammatory bowel diseases (IBD) are chronic intestinal disorders that result from an inappropriate inflammatory response to the microbiota in genetically susceptible individuals, often triggered by environmental stressors. Part of this response is the persistent inflammation and tissue injury associated with deficiency or excess of reactive oxygen species (ROS). The NADPH oxidase NOX1 is highly expressed in the intestinal epithelium, and inactivating NOX1 missense mutations are considered a risk factor for developing very early onset IBD. Albeit NOX1 has been linked to wound healing and host defence, many questions remain about its role in intestinal homeostasis and acute inflammatory conditions. Here, we used in vivo imaging in combination with inhibitor studies and germ-free conditions to conclusively identify NOX1 as essential superoxide generator for microbiota-dependent peroxynitrite production in homeostasis and during early endotoxemia. NOX1 loss-of-function variants cannot support peroxynitrite production, suggesting that the gut barrier is persistently weakened in these patients. One of the loss-of-function NOX1 variants, NOX1 p. Asn122His, features replacement of an asparagine residue located in a highly conserved HxxxHxxN motif. Modelling the NOX1-p22phox complex revealed near the distal heme an internal pocket restricted by His119 and Asn122 that is part of the oxygen reduction site. Functional studies in several human NADPH oxidases show that substitution of asparagine with amino acids with larger side chains is not tolerated, while smaller side chains can support catalytic activity. Thus, we identified a previously unrecognized structural feature required for the electron transfer mechanism in human NADPH oxidases.
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Affiliation(s)
- Josie Ward
- School of Medicine, Conway Institute, University College Dublin, Dublin, Ireland
| | - Suisheng Zhang
- School of Medicine, Conway Institute, University College Dublin, Dublin, Ireland
| | - Adam Sikora
- Faculty of Chemistry, Institute of Applied Radiation Chemistry, Lodz University of Technology, Lodz, Poland
| | - Radoslaw Michalski
- Faculty of Chemistry, Institute of Applied Radiation Chemistry, Lodz University of Technology, Lodz, Poland
| | - Yuting Yin
- School of Medicine, Conway Institute, University College Dublin, Dublin, Ireland
| | - Aurora D'Alessio
- School of Medicine, Conway Institute, University College Dublin, Dublin, Ireland
| | - Rachel M McLoughlin
- Host-Pathogen Interactions Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - Vincent Jaquet
- Department of Pathology and Immunology and READS Unit, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Franck Fieschi
- Univ. Grenoble Alpes, CNRS, CEA, UMR5075, Institut de Biologie Structurale, Grenoble, France; Institut Universitaire de France (IUF), Paris, France.
| | - Ulla G Knaus
- School of Medicine, Conway Institute, University College Dublin, Dublin, Ireland.
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9
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Castrillón-Betancur JC, López-Agudelo VA, Sommer N, Cleeves S, Bernardes JP, Weber-Stiehl S, Rosenstiel P, Sommer F. Epithelial Dual Oxidase 2 Shapes the Mucosal Microbiome and Contributes to Inflammatory Susceptibility. Antioxidants (Basel) 2023; 12:1889. [PMID: 37891968 PMCID: PMC10603924 DOI: 10.3390/antiox12101889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/03/2023] [Accepted: 10/19/2023] [Indexed: 10/29/2023] Open
Abstract
Reactive oxygen species (ROS) are highly reactive molecules formed from diatomic oxygen. They act as cellular signals, exert antibiotic activity towards invading microorganisms, but can also damage host cells. Dual oxidase 2 (DUOX2) is the main ROS-producing enzyme in the intestine, regulated by cues of the commensal microbiota and functions in pathogen defense. DUOX2 plays multiple roles in different organs and cell types, complicating the functional analysis using systemic deletion models. Here, we interrogate the precise role of epithelial DUOX2 for intestinal homeostasis and host-microbiome interactions. Conditional Duox2∆IEC mice lacking DUOX2, specifically in intestinal epithelial cells, were generated, and their intestinal mucosal immune phenotype and microbiome were analyzed. Inflammatory susceptibility was evaluated by challenging Duox2∆IEC mice in the dextran sodium sulfate (DSS) colitis model. DUOX2-microbiome interactions in humans were investigated by paired analyses of mucosal DUOX2 expression and fecal microbiome data in patients with intestinal inflammation. Under unchallenged conditions, we did not observe any obvious phenotype of Duox2∆IEC mice, although intestinal epithelial ROS production was drastically decreased, and the mucosal microbiome composition was altered. When challenged with DSS, Duox2∆IEC mice were protected from colitis, possibly by inhibiting ROS-mediated damage and fostering epithelial regenerative responses. Finally, in patients with intestinal inflammation, DUOX2 expression was increased in inflamed tissue, and high DUOX2 levels were linked to a dysbiotic microbiome. Our findings demonstrate that bidirectional DUOX2-microbiome interactions contribute to mucosal homeostasis, and their dysregulation may drive disease development, thus highlighting this axis as a therapeutic target to treat intestinal inflammation.
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Affiliation(s)
| | - Víctor Alonso López-Agudelo
- Institute of Clinical Molecular Biology, University of Kiel, Rosalind-Franklin-Straße 12, 24105 Kiel, Germany
| | - Nina Sommer
- Institute of Clinical Molecular Biology, University of Kiel, Rosalind-Franklin-Straße 12, 24105 Kiel, Germany
| | - Sven Cleeves
- Fraunhofer Institute for Toxicology and Experimental Medicine ITEM, Nikolai-Fuchs-Straße 1, 30625 Hannover, Germany
| | - Joana Pimenta Bernardes
- Institute of Clinical Molecular Biology, University of Kiel, Rosalind-Franklin-Straße 12, 24105 Kiel, Germany
| | - Saskia Weber-Stiehl
- Institute of Clinical Molecular Biology, University of Kiel, Rosalind-Franklin-Straße 12, 24105 Kiel, Germany
| | - Philip Rosenstiel
- Institute of Clinical Molecular Biology, University of Kiel, Rosalind-Franklin-Straße 12, 24105 Kiel, Germany
| | - Felix Sommer
- Institute of Clinical Molecular Biology, University of Kiel, Rosalind-Franklin-Straße 12, 24105 Kiel, Germany
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10
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Hazime H, Ducasa GM, Santander AM, Brito N, González EE, Ban Y, Kaunitz J, Akiba Y, Fernández I, Burgueño JF, Abreu MT. Intestinal Epithelial Inactivity of Dual Oxidase 2 Results in Microbiome-Mediated Metabolic Syndrome. Cell Mol Gastroenterol Hepatol 2023; 16:557-572. [PMID: 37369278 PMCID: PMC10468370 DOI: 10.1016/j.jcmgh.2023.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/13/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023]
Abstract
BACKGROUND & AIMS Metabolic syndrome (MetS) is characterized by obesity, glucose intolerance, and hepatic steatosis. Alterations in the gut microbiome play important roles in the development of MetS. However, the mechanisms by which this occurs are poorly understood. Dual oxidase 2 (DUOX2) is an antimicrobial reduced nicotinamide adenine dinucleotide phosphate oxidase expressed in the gut epithelium. Here, we posit that epithelial DUOX2 activity provides a mechanistic link between the gut microbiome and the development of MetS. METHODS Mice carrying an intestinal epithelial-specific deletion of dual oxidase maturation factor 1/2 (DA IEC-KO), and wild-type littermates were fed a standard diet and killed at 24 weeks. Metabolic alterations were determined by glucose tolerance, lipid tests, and body and organ weight measurements. DUOX2 activity was determined by Amplex Red. Intestinal permeability was determined by fluorescein isothiocyanate-dextran, microbial translocation assessments, and portal vein lipopolysaccharide measurements. Metagenomic analysis of the stool microbiome was performed. The role of the microbiome was assessed in antibiotic-treated mice. RESULTS DA IEC-KO males showed increased body and organ weights accompanied by glucose intolerance and increased plasma lipid and liver enzyme levels, and increased adiposity in the liver and adipose tissue. Expression of F4/80, CD68, uncoupling protein 1, carbohydrate response element binding protein, leptin, and adiponectin was altered in the liver and adipose tissue of DA IEC-KO males. DA IEC-KO males produced less epithelial H2O2, had altered relative abundance of Akkermansiaceae and Lachnospiraceae in stool, and showed increased portal vein lipopolysaccharides and intestinal permeability. Females were protected from barrier defects and MetS, despite producing less H2O2. Antibiotic depletion abrogated all MetS phenotypes observed. CONCLUSIONS Intestinal epithelial inactivity of DUOX2 promotes MetS in a microbiome-dependent manner.
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Affiliation(s)
- Hajar Hazime
- Division of Gastroenterology, Department of Medicine, University of Miami-Miller School of Medicine, Miami, Florida; Department of Microbiology and Immunology, University of Miami-Miller School of Medicine, Miami, Florida
| | - G Michelle Ducasa
- Division of Gastroenterology, Department of Medicine, University of Miami-Miller School of Medicine, Miami, Florida
| | - Ana M Santander
- Division of Gastroenterology, Department of Medicine, University of Miami-Miller School of Medicine, Miami, Florida
| | - Nivis Brito
- Division of Gastroenterology, Department of Medicine, University of Miami-Miller School of Medicine, Miami, Florida
| | - Eddy E González
- Division of Gastroenterology, Department of Medicine, University of Miami-Miller School of Medicine, Miami, Florida
| | - Yuguang Ban
- Biostatistics and Bioinformatics Shared Resource, Sylvester Comprehensive Cancer Center, University of Miami-Miller School of Medicine, Miami, Florida
| | - Jonathan Kaunitz
- Medical Service and Research Services, VA Greater Los Angeles Healthcare System, Los Angeles, California; Medical Service, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Yasutada Akiba
- Medical Service and Research Services, VA Greater Los Angeles Healthcare System, Los Angeles, California; Medical Service, Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Irina Fernández
- Division of Gastroenterology, Department of Medicine, University of Miami-Miller School of Medicine, Miami, Florida
| | - Juan F Burgueño
- Division of Gastroenterology, Department of Medicine, University of Miami-Miller School of Medicine, Miami, Florida
| | - Maria T Abreu
- Division of Gastroenterology, Department of Medicine, University of Miami-Miller School of Medicine, Miami, Florida; Department of Microbiology and Immunology, University of Miami-Miller School of Medicine, Miami, Florida.
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11
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Xu S, Li X, Zhang S, Qi C, Zhang Z, Ma R, Xiang L, Chen L, Zhu Y, Tang C, Bourgonje AR, Li M, He Y, Zeng Z, Hu S, Feng R, Chen M. Oxidative stress gene expression, DNA methylation, and gut microbiota interaction trigger Crohn's disease: a multi-omics Mendelian randomization study. BMC Med 2023; 21:179. [PMID: 37170220 PMCID: PMC10173549 DOI: 10.1186/s12916-023-02878-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 04/21/2023] [Indexed: 05/13/2023] Open
Abstract
BACKGROUND Oxidative stress (OS) is a key pathophysiological mechanism in Crohn's disease (CD). OS-related genes can be affected by environmental factors, intestinal inflammation, gut microbiota, and epigenetic changes. However, the role of OS as a potential CD etiological factor or triggering factor is unknown, as differentially expressed OS genes in CD can be either a cause or a subsequent change of intestinal inflammation. Herein, we used a multi-omics summary data-based Mendelian randomization (SMR) approach to identify putative causal effects and underlying mechanisms of OS genes in CD. METHODS OS-related genes were extracted from the GeneCards database. Intestinal transcriptome datasets were collected from the Gene Expression Omnibus (GEO) database and meta-analyzed to identify differentially expressed genes (DEGs) related to OS in CD. Integration analyses of the largest CD genome-wide association study (GWAS) summaries with expression quantitative trait loci (eQTLs) and DNA methylation QTLs (mQTLs) from the blood were performed using SMR methods to prioritize putative blood OS genes and their regulatory elements associated with CD risk. Up-to-date intestinal eQTLs and fecal microbial QTLs (mbQTLs) were integrated to uncover potential interactions between host OS gene expression and gut microbiota through SMR and colocalization analysis. Two additional Mendelian randomization (MR) methods were used as sensitivity analyses. Putative results were validated in an independent multi-omics cohort from the First Affiliated Hospital of Sun Yat-sen University (FAH-SYS). RESULTS A meta-analysis from six datasets identified 438 OS-related DEGs enriched in intestinal enterocytes in CD from 817 OS-related genes. Five genes from blood tissue were prioritized as candidate CD-causal genes using three-step SMR methods: BAD, SHC1, STAT3, MUC1, and GPX3. Furthermore, SMR analysis also identified five putative intestinal genes, three of which were involved in gene-microbiota interactions through colocalization analysis: MUC1, CD40, and PRKAB1. Validation results showed that 88.79% of DEGs were replicated in the FAH-SYS cohort. Associations between pairs of MUC1-Bacillus aciditolerans and PRKAB1-Escherichia coli in the FAH-SYS cohort were consistent with eQTL-mbQTL colocalization. CONCLUSIONS This multi-omics integration study highlighted that OS genes causal to CD are regulated by DNA methylation and host-microbiota interactions. This provides evidence for future targeted functional research aimed at developing suitable therapeutic interventions and disease prevention.
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Affiliation(s)
- Shu Xu
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Xiaozhi Li
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Shenghong Zhang
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Cancan Qi
- Microbiome Medicine Center, Division of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Zhenhua Zhang
- Department of Computational Biology for Individualised Medicine, Centre for Individualised Infection Medicine & TWINCORE, Joint Ventures Between the Helmholtz Centre for Infection Research and the Hannover Medical School, Hannover, Germany
| | - Ruiqi Ma
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Liyuan Xiang
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Lianmin Chen
- Changzhou Medical Center, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Nanjing Medical University, Changzhou, Jiangsu, China
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yijun Zhu
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Ce Tang
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Arno R Bourgonje
- Department of Gastroenterology and Hepatology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Miaoxin Li
- Zhongshan School of Medicine, Center for Precision Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Yao He
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Zhirong Zeng
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Shixian Hu
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China.
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China.
| | - Rui Feng
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China.
- Department of Gastroenterology, Guangxi Hospital Division of The First Affiliated Hospital, Sun Yat-Sen University, Nanning, Guangxi, China.
| | - Minhu Chen
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, China.
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12
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Duan J, Matute JD, Unger LW, Hanley T, Schnell A, Lin X, Krupka N, Griebel P, Lambden C, Sit B, Grootjans J, Pyzik M, Sommer F, Kaiser S, Falk-Paulsen M, Grasberger H, Kao JY, Fuhrer T, Li H, Paik D, Lee Y, Refetoff S, Glickman JN, Paton AW, Bry L, Paton JC, Sauer U, Macpherson AJ, Rosenstiel P, Kuchroo VK, Waldor MK, Huh JR, Kaser A, Blumberg RS. Endoplasmic reticulum stress in the intestinal epithelium initiates purine metabolite synthesis and promotes Th17 cell differentiation in the gut. Immunity 2023; 56:1115-1131.e9. [PMID: 36917985 PMCID: PMC10175221 DOI: 10.1016/j.immuni.2023.02.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 01/12/2023] [Accepted: 02/24/2023] [Indexed: 03/14/2023]
Abstract
Intestinal IL-17-producing T helper (Th17) cells are dependent on adherent microbes in the gut for their development. However, how microbial adherence to intestinal epithelial cells (IECs) promotes Th17 cell differentiation remains enigmatic. Here, we found that Th17 cell-inducing gut bacteria generated an unfolded protein response (UPR) in IECs. Furthermore, subtilase cytotoxin expression or genetic removal of X-box binding protein 1 (Xbp1) in IECs caused a UPR and increased Th17 cells, even in antibiotic-treated or germ-free conditions. Mechanistically, UPR activation in IECs enhanced their production of both reactive oxygen species (ROS) and purine metabolites. Treating mice with N-acetyl-cysteine or allopurinol to reduce ROS production and xanthine, respectively, decreased Th17 cells that were associated with an elevated UPR. Th17-related genes also correlated with ER stress and the UPR in humans with inflammatory bowel disease. Overall, we identify a mechanism of intestinal Th17 cell differentiation that emerges from an IEC-associated UPR.
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Affiliation(s)
- Jinzhi Duan
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Juan D Matute
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Division of Newborn Medicine, Department of Pediatrics, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA
| | - Lukas W Unger
- Cambridge Institute of Therapeutic Immunology and Infectious Disease (CITIID), Jeffrey Cheah Biomedical Centre, and Division of Gastroenterology and Hepatology, Department of Medicine, University of Cambridge, Cambridge, CB2 0AW, UK; Division of Visceral Surgery, Department of General Surgery, Medical University of Vienna, Vienna, 10090, Austria
| | - Thomas Hanley
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Alexandra Schnell
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA; Broad Institute of MIT and Harvard University, Cambridge, MA 02142, USA
| | - Xi Lin
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Niklas Krupka
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Paul Griebel
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Conner Lambden
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA; Broad Institute of MIT and Harvard University, Cambridge, MA 02142, USA
| | - Brandon Sit
- Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Joep Grootjans
- Department of Gastroenterology and Hepatology, Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam UMC, Location AMC, 1105 AZ Amsterdam, The Netherlands
| | - Michal Pyzik
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Felix Sommer
- Institute of Clinical Molecular Biology, University of Kiel, 24105 Kiel, Germany
| | - Sina Kaiser
- Institute of Clinical Molecular Biology, University of Kiel, 24105 Kiel, Germany
| | - Maren Falk-Paulsen
- Institute of Clinical Molecular Biology, University of Kiel, 24105 Kiel, Germany
| | - Helmut Grasberger
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Michigan Medicine, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - John Y Kao
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Michigan Medicine, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Tobias Fuhrer
- Institute of Molecular Systems Biology, Swiss Federal Institute of Technology (ETH) Zürich, Zürich, Switzerland
| | - Hai Li
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Donggi Paik
- Department of Immunology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Yunjin Lee
- Department of Immunology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Samuel Refetoff
- Department of Medicine, Pediatrics and Committee on Genetics, The University of Chicago, Chicago, IL 60637, USA
| | - Jonathan N Glickman
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Adrienne W Paton
- Research Centre for Infectious Diseases, Department of Molecular and Biomedical Science, the University of Adelaide, Adelaide, 5005, Australia
| | - Lynn Bry
- Massachusetts Host-Microbiome Center, Department of Pathology, Brigham & Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - James C Paton
- Research Centre for Infectious Diseases, Department of Molecular and Biomedical Science, the University of Adelaide, Adelaide, 5005, Australia
| | - Uwe Sauer
- Institute of Molecular Systems Biology, Swiss Federal Institute of Technology (ETH) Zürich, Zürich, Switzerland
| | - Andrew J Macpherson
- Department of Visceral Surgery and Medicine, Inselspital, Bern University Hospital, University of Bern, Switzerland
| | - Philip Rosenstiel
- Institute of Clinical Molecular Biology, University of Kiel, 24105 Kiel, Germany
| | - Vijay K Kuchroo
- Evergrande Center for Immunologic Diseases, Harvard Medical School and Brigham and Women's Hospital, Boston, MA 02115, USA; Broad Institute of MIT and Harvard University, Cambridge, MA 02142, USA
| | - Matthew K Waldor
- Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA 02115, USA; Howard Hughes Medical Institute, Boston, MA 02115, USA
| | - Jun R Huh
- Department of Immunology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Arthur Kaser
- Cambridge Institute of Therapeutic Immunology and Infectious Disease (CITIID), Jeffrey Cheah Biomedical Centre, and Division of Gastroenterology and Hepatology, Department of Medicine, University of Cambridge, Cambridge, CB2 0AW, UK
| | - Richard S Blumberg
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
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13
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Wang Y, Huang J, Zhang J, Wang F, Tang X. Identifying biomarkers associated with the diagnosis of ulcerative colitis via bioinformatics and machine learning. MATHEMATICAL BIOSCIENCES AND ENGINEERING : MBE 2023; 20:10741-10756. [PMID: 37322958 DOI: 10.3934/mbe.2023476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
BACKGROUND Ulcerative colitis (UC) is an idiopathic inflammatory disease with an increasing incidence. This study aimed to identify potential UC biomarkers and associated immune infiltration characteristics. METHODS Two datasets (GSE87473 and GSE92415) were merged to obtain 193 UC samples and 42 normal samples. Using R, differentially expressed genes (DEGs) between UC and normal samples were filtered out, and their biological functions were investigated using Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses. Promising biomarkers were identified using least absolute shrinkage selector operator regression and support vector machine recursive feature elimination, and their diagnostic efficacy was evaluated through receiver operating characteristic (ROC) curves. Finally, CIBERSORT was used to investigate the immune infiltration characteristics in UC, and the relationship between the identified biomarkers and various immune cells was examined. RESULTS We found 102 DEGs, of which 64 were significantly upregulated, and 38 were significantly downregulated. The DEGs were enriched in pathways associated with interleukin-17, cytokine-cytokine receptor interaction and viral protein interactions with cytokines and cytokine receptors, among others. Using machine learning methods and ROC tests, we confirmed DUOX2, DMBT1, CYP2B7P, PITX2 and DEFB1 to be essential diagnostic genes for UC. Immune cell infiltration analysis revealed that all five diagnostic genes were correlated with regulatory T cells, CD8 T cells, activated and resting memory CD4 T cells, activated natural killer cells, neutrophils, activated and resting mast cells, activated and resting dendritic cells and M0, M1 and M2 macrophages. CONCLUSIONS DUOX2, DMBT1, CYP2B7P, PITX2 and DEFB1 were identified as prospective biomarkers for UC. A new perspective on understanding the progression of UC may be provided by these biomarkers and their relationship with immune cell infiltration.
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Affiliation(s)
- Yuedan Wang
- Institute of Digestive Diseases, Xiyuan Hospital of China Academy of Chinese Medical Sciences, Beijing 100091, China
| | - Jinke Huang
- Institute of Digestive Diseases, Xiyuan Hospital of China Academy of Chinese Medical Sciences, Beijing 100091, China
| | - Jiaqi Zhang
- Institute of Digestive Diseases, Xiyuan Hospital of China Academy of Chinese Medical Sciences, Beijing 100091, China
| | - Fengyun Wang
- Institute of Digestive Diseases, Xiyuan Hospital of China Academy of Chinese Medical Sciences, Beijing 100091, China
| | - Xudong Tang
- China Academy of Chinese Medical Sciences, Beijing 100091, China
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14
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Yue Z, Fan Z, Zhang H, Feng B, Wu C, Chen S, Ouyang J, Fan H, Weng P, Feng H, Chen S, Dong M, Xu A, Huang S. Differential roles of the fish chitinous membrane in gut barrier immunity and digestive compartments. EMBO Rep 2023; 24:e56645. [PMID: 36852962 PMCID: PMC10074124 DOI: 10.15252/embr.202256645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 03/01/2023] Open
Abstract
The chitin-based peritrophic matrix (PM) is a structure critical for both gut immunity and digestion in invertebrates. PM was traditionally considered lost in all vertebrates, but a PM-like chitinous membrane (CM) has recently been discovered in fishes, which may increase the knowledge on vertebrate gut physiology and structural evolution. Here, we show that in zebrafish, the CM affects ingestion behavior, microbial homeostasis, epithelial renewal, digestion, growth, and longevity. Young mutant fish without CM appear healthy and are able to complete their life cycle normally, but with increasing age they develop gut inflammation, resulting in gut atrophy. Unlike mammals, zebrafish have no visible gel-forming mucin layers to protect their gut epithelia, but at least in young fish, the CM is not a prerequisite for the antibacterial gut immunity. These findings provide new insights into the role of the CM in fish prosperity and its eventual loss in tetrapods. These findings may also help to improve fish health and conservation, as well as to advance the understanding of vertebrate gut physiology and human intestinal diseases.
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Affiliation(s)
- Zirui Yue
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and TechnologyQingdaoChina
| | - Zhaoyu Fan
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Hao Zhang
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Buhan Feng
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Chengyi Wu
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life SciencesXiamen UniversityXiamenChina
| | - Shenghui Chen
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Jihua Ouyang
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Huiping Fan
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Panwei Weng
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Huixiong Feng
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Shangwu Chen
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Meiling Dong
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
| | - Anlong Xu
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
- School of Life SciencesBeijing University of Chinese MedicineBeijingChina
| | - Shengfeng Huang
- Guangdong Key Laboratory of Pharmaceutical Functional Genes, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), State Key Laboratory of Biocontrol, School of Life SciencesSun Yat‐sen UniversityGuangdongChina#
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and TechnologyQingdaoChina
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15
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Zhu LH, Dong J, Li WL, Kou ZY, Yang J. Genotype-Phenotype Correlations in Autosomal Dominant and Recessive APC Mutation-Negative Colorectal Adenomatous Polyposis. Dig Dis Sci 2023:10.1007/s10620-023-07890-9. [PMID: 36862359 DOI: 10.1007/s10620-023-07890-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 02/17/2023] [Indexed: 03/03/2023]
Abstract
The most prevalent type of intestinal polyposis, colorectal adenomatous polyposis (CAP), is regarded as a precancerous lesion of colorectal cancer with obvious genetic characteristics. Early screening and intervention can significantly improve patients' survival and prognosis. The adenomatous polyposis coli (APC) mutation is believed to be the primary cause of CAP. There is, however, a subset of CAP with undetectable pathogenic mutations in APC, known as APC (-)/CAP. The genetic predisposition to APC (-)/CAP has largely been associated with germline mutations in some susceptible genes, including the human mutY homologue (MUTYH) gene and the Nth-like DNA glycosylase 1 (NTHL1) gene, and DNA mismatch repair (MMR) can cause autosomal recessive APC (-)/CAP. Furthermore, autosomal dominant APC (-)/CAP could occur as a result of DNA polymerase epsilon (POLE)/DNA polymerase delta 1 (POLD1), axis inhibition protein 2 (AXIN2), and dual oxidase 2 (DUOX2) mutations. The clinical phenotypes of these pathogenic mutations vary greatly depending on their genetic characteristics. Therefore, in this study, we present a comprehensive review of the association between autosomal recessive and dominant APC (-)/CAP genotypes and clinical phenotypes and conclude that APC (-)/CAP is a disease caused by multiple genes with different phenotypes and interaction exists in the pathogenic genes.
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Affiliation(s)
- Li-Hua Zhu
- Department of Oncology, The First Affiliated Hospital of Kunming Medical University, No. 295 Xichang Rd, Kunming, 650032, China
| | - Jian Dong
- Department of Internal Medicine-Oncology, Third Affiliated Hospital, Kunming Medical University, Kunming, 650118, China
| | - Wen-Liang Li
- Colorectal Cancer Clinical Research Center, Third Affiliated Hospital, Kunming Medical University, Kunming, 650118, China
| | - Zhi-Yong Kou
- Department of Oncology, The First Affiliated Hospital of Kunming Medical University, No. 295 Xichang Rd, Kunming, 650032, China
| | - Jun Yang
- Department of Oncology, The First Affiliated Hospital of Kunming Medical University, No. 295 Xichang Rd, Kunming, 650032, China.
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16
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Yang Y, Yu P, Lu Y, Gao C, Sun Q. Disturbed rhythmicity of intestinal hydrogen peroxide alters gut microbial oscillations in BMAL1-deficient monkeys. Cell Rep 2023; 42:112183. [PMID: 36857177 DOI: 10.1016/j.celrep.2023.112183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 01/04/2023] [Accepted: 02/14/2023] [Indexed: 03/02/2023] Open
Abstract
Circadian oscillation of gut microbiota exerts significant influence on host physiology, but the host factors that sustain microbial oscillations are rarely reported. We compared the gut microbiome and metabolome of wild-type and BMAL1-deficient cynomolgus monkeys during a diurnal cycle by performing 16S rRNA sequencing and untargeted fecal metabolomics and uncovered the influence of intestinal H2O2 on microbial compositions. Ablation of BMAL1 induced expansion of Bacteroidota at midnight and altered microbial oscillations. Some important fecal metabolites changed significantly, and we investigated their correlations with microbes. Further analyses revealed that disturbed rhythmicity of NOX1-derived intestinal H2O2 was responsible for the altered microbial oscillations in BMAL1-deficient monkeys. Mechanistic studies showed that BMAL1 transactivated NOX1 via binding to the E1-E2 site in its promoter. Notably, BMAL1-dependent activation of NOX1 was conserved in cynomolgus monkeys and humans. Our study demonstrates the importance of intestine clock-controlled H2O2 rhythmicity on the rhythmic oscillation of gut microbiota.
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Affiliation(s)
- Yunpeng Yang
- Institute of Neuroscience, CAS Key Laboratory of Primate Neurobiology, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, P.R. China; Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, P.R. China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, P.R. China.
| | - Peijun Yu
- Institute of Neuroscience, CAS Key Laboratory of Primate Neurobiology, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, P.R. China; University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Yong Lu
- Institute of Neuroscience, CAS Key Laboratory of Primate Neurobiology, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, P.R. China
| | - Changshan Gao
- Institute of Neuroscience, CAS Key Laboratory of Primate Neurobiology, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, P.R. China
| | - Qiang Sun
- Institute of Neuroscience, CAS Key Laboratory of Primate Neurobiology, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, P.R. China.
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17
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Ding MH, Xu PG, Wang Y, Ren BD, Zhang JL. Resveratrol Attenuates Ankylosing Spondylitis in Mice by Inhibiting the TLR4/NF-κB/NLRP3 Pathway and Regulating Gut Microbiota. Immunol Invest 2023; 52:194-209. [PMID: 36548483 DOI: 10.1080/08820139.2022.2154162] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Ankylosing spondylitis (AS) is an autoimmune disease associated with disturbed gut microbiota. Currently, the treatments and outcomes of AS are not satisfactory. It is reported that resveratrol (RES) is a major phytoalexin with anti-inflammatory, antibacterial and some other pharmacological effects. However, there are no studies on the role of RES in AS. Therefore, this study aimed to explore the effect and mechanism of RES on AS. Proteoglycan and complete freund's adjuvant were used to conduct an AS mouse model, and then the AS mice were gavaged with RES (20 mg/kg and 50 mg/kg) daily for 4 weeks. Subsequently, the effect of RES on AS mice was assessed by detecting disease severity, inflammatory cytokines, NLRP3 inflammasome, TLR4/NF-κB pathway, intestinal mucosal barrier function, intestinal microbial barrier function. The assessment results indicated that RES could significantly relieve progression and severity of AS, inhibit the expression of pro-inflammatory cytokines (tumor necrosis factor-α, interleukin-6, interleukin-17A, interferon-γ), and promote the expression of anti-inflammatory cytokines (interleukin-4). RES intervention caused the inhibition of NLRP3 inflammasome and TLR4/NF-κB pathway. In terms of intestinal barrier function, experimental results found RES increased zonula occludens-1 and occludin expression, and additionally, changed the composition of the gut microbiota by increasing levels of Lactobacillus and Bifidobacterium and reducing levels of Enterococcus faecalis and Escherichia coli. Collectively, RES protects PG-induced AS mice by inhibiting inflammatory responses and TLR4/NF-κB/NLRP3 pathway, restoring intestinal mucosal barrier function, and regulating the composition of the gut microbiota. In other words, RES is a potential candidate for the treatment of AS.
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Affiliation(s)
- Ming-Hui Ding
- The Seventh Department of Rheumatology, Xi'an No.5 Hospital, Xi'an, China
| | - Peng-Gang Xu
- The Seventh Department of Rheumatology, Xi'an No.5 Hospital, Xi'an, China
| | - Ying Wang
- The Eighth Department of Rheumatology, Xi'an No.5 Hospital, Xi'an, China
| | - Bao-di Ren
- The Seventh Department of Rheumatology, Xi'an No.5 Hospital, Xi'an, China
| | - Jun-Li Zhang
- The Seventh Department of Rheumatology, Xi'an No.5 Hospital, Xi'an, China
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18
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Ortiz AM, Baker PJ, Langner CA, Simpson J, Stacy A, Flynn JK, Starke CE, Vinton CL, Fennessey CM, Belkaid Y, Keele BF, Brenchley JM. Experimental bacterial dysbiosis with consequent immune alterations increase intrarectal SIV acquisition susceptibility. Cell Rep 2023; 42:112020. [PMID: 36848230 PMCID: PMC9989505 DOI: 10.1016/j.celrep.2023.112020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 12/16/2022] [Accepted: 01/06/2023] [Indexed: 01/24/2023] Open
Abstract
Variations in the composition of the intestinal bacterial microbiome correlate with acquisition of some sexually transmitted pathogens. To experimentally assess the contribution of intestinal dysbiosis to rectal lentiviral acquisition, we induce dysbiosis in rhesus macaques (RMs) with the antibiotic vancomycin prior to repeated low-dose intrarectal challenge with simian immunodeficiency virus (SIV) SIVmac239X. Vancomycin administration reduces T helper 17 (TH17) and TH22 frequencies, increases expression of host bacterial sensors and antibacterial peptides, and increases numbers of transmitted-founder (T/F) variants detected upon SIV acquisition. We observe that SIV acquisition does not correlate with measures of dysbiosis but rather associates with perturbations in the host antimicrobial program. These findings establish a functional association between the intestinal microbiome and susceptibility to lentiviral acquisition across the rectal epithelial barrier.
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Affiliation(s)
- Alexandra M Ortiz
- Barrier Immunity Section, Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Phillip J Baker
- Barrier Immunity Section, Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Charlotte A Langner
- Barrier Immunity Section, Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jennifer Simpson
- Barrier Immunity Section, Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Apollo Stacy
- Metaorganism Immunity Section, Laboratory of Immune System Biology and Laboratory of Host Immunity and Microbiome, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA; Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Jacob K Flynn
- Barrier Immunity Section, Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Carly E Starke
- Barrier Immunity Section, Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Carol L Vinton
- Barrier Immunity Section, Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Christine M Fennessey
- AIDS and Cancer Virus Program, Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA
| | - Yasmine Belkaid
- Metaorganism Immunity Section, Laboratory of Immune System Biology and Laboratory of Host Immunity and Microbiome, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA; NIAID Microbiome Program, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Brandon F Keele
- AIDS and Cancer Virus Program, Frederick National Laboratory for Cancer Research, Frederick, MD 21702, USA
| | - Jason M Brenchley
- Barrier Immunity Section, Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
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19
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Windfelder AG, Müller FHH, Mc Larney B, Hentschel M, Böhringer AC, von Bredow CR, Leinberger FH, Kampschulte M, Maier L, von Bredow YM, Flocke V, Merzendorfer H, Krombach GA, Vilcinskas A, Grimm J, Trenczek TE, Flögel U. High-throughput screening of caterpillars as a platform to study host-microbe interactions and enteric immunity. Nat Commun 2022; 13:7216. [PMID: 36433960 PMCID: PMC9700799 DOI: 10.1038/s41467-022-34865-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 11/10/2022] [Indexed: 11/27/2022] Open
Abstract
Mammalian models of human disease are expensive and subject to ethical restrictions. Here, we present an independent platform for high-throughput screening, using larvae of the tobacco hornworm Manduca sexta, combining diagnostic imaging modalities for a comprehensive characterization of aberrant phenotypes. For validation, we use bacterial/chemical-induced gut inflammation to generate a colitis-like phenotype and identify significant alterations in morphology, tissue properties, and intermediary metabolism, which aggravate with disease progression and can be rescued by antimicrobial treatment. In independent experiments, activation of the highly conserved NADPH oxidase DUOX, a key mediator of gut inflammation, leads to similar, dose-dependent alterations, which can be attenuated by pharmacological interventions. Furthermore, the developed platform could differentiate pathogens from mutualistic gastrointestinal bacteria broadening the scope of applications also to microbiomics and host-pathogen interactions. Overall, larvae-based screening can complement mammals in preclinical studies to explore innate immunity and host-pathogen interactions, thus representing a substantial contribution to improve mammalian welfare.
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Affiliation(s)
- Anton G. Windfelder
- grid.8664.c0000 0001 2165 8627Institute of Zoology and Developmental Biology; Cellular Recognition and Defense Processes, Justus Liebig University Giessen, Giessen, Germany ,grid.418010.c0000 0004 0573 9904Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Giessen, Germany ,grid.8664.c0000 0001 2165 8627Laboratory of Experimental Radiology, Justus Liebig University Giessen, Giessen, Germany
| | | | - Benedict Mc Larney
- grid.51462.340000 0001 2171 9952Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY USA ,grid.51462.340000 0001 2171 9952Molecular Imaging and Therapy Service, Memorial Sloan Kettering Cancer Center, New York, NY USA
| | - Michael Hentschel
- grid.411656.10000 0004 0479 0855Department of Nuclear Medicine, Inselspital Bern, Bern, Switzerland
| | - Anna Christina Böhringer
- grid.5836.80000 0001 2242 8751Department of Chemistry and Biology, School of Science and Technology, University of Siegen, Siegen, Germany
| | - Christoph-Rüdiger von Bredow
- grid.4488.00000 0001 2111 7257Applied Zoology, Department of Biology, Technical University of Dresden, Dresden, Germany
| | - Florian H. Leinberger
- grid.8664.c0000 0001 2165 8627Institute of Zoology and Developmental Biology; Cellular Recognition and Defense Processes, Justus Liebig University Giessen, Giessen, Germany
| | - Marian Kampschulte
- grid.8664.c0000 0001 2165 8627Laboratory of Experimental Radiology, Justus Liebig University Giessen, Giessen, Germany
| | - Lorenz Maier
- grid.411656.10000 0004 0479 0855Department of Nuclear Medicine, Inselspital Bern, Bern, Switzerland
| | - Yvette M. von Bredow
- grid.8664.c0000 0001 2165 8627Institute of Zoology and Developmental Biology; Cellular Recognition and Defense Processes, Justus Liebig University Giessen, Giessen, Germany
| | - Vera Flocke
- grid.411327.20000 0001 2176 9917Experimental Cardiovascular Imaging, Molecular Cardiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Hans Merzendorfer
- grid.5836.80000 0001 2242 8751Department of Chemistry and Biology, School of Science and Technology, University of Siegen, Siegen, Germany
| | - Gabriele A. Krombach
- grid.411067.50000 0000 8584 9230Department of Diagnostic and Interventional Radiology, University-Hospital Giessen, Giessen, Germany
| | - Andreas Vilcinskas
- grid.418010.c0000 0004 0573 9904Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Giessen, Germany ,grid.8664.c0000 0001 2165 8627Institute for Insect Biotechnology, Department of Applied Entomology, Justus Liebig University Giessen, Giessen, Germany
| | - Jan Grimm
- grid.51462.340000 0001 2171 9952Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY USA ,grid.51462.340000 0001 2171 9952Molecular Imaging and Therapy Service, Memorial Sloan Kettering Cancer Center, New York, NY USA ,grid.5386.8000000041936877XPharmacology Department, Weill Cornell Medical College, New York, NY USA ,grid.51462.340000 0001 2171 9952Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY USA ,grid.413734.60000 0000 8499 1112Department of Radiology, Weill Cornell Medical Center, New York, NY USA
| | - Tina E. Trenczek
- grid.8664.c0000 0001 2165 8627Institute of Zoology and Developmental Biology; Cellular Recognition and Defense Processes, Justus Liebig University Giessen, Giessen, Germany
| | - Ulrich Flögel
- grid.411327.20000 0001 2176 9917Experimental Cardiovascular Imaging, Molecular Cardiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
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20
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Herfindal AM, Rocha SDC, Papoutsis D, Bøhn SK, Carlsen H. The ROS-generating enzyme NADPH oxidase 1 modulates the colonic microbiota but offers minor protection against dextran sulfate sodium-induced low-grade colon inflammation in mice. Free Radic Biol Med 2022; 188:298-311. [PMID: 35752373 DOI: 10.1016/j.freeradbiomed.2022.06.234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/13/2022] [Accepted: 06/19/2022] [Indexed: 10/17/2022]
Abstract
The enzyme NADPH oxidase 1 (NOX1) is a major producer of superoxide which together with other reactive oxygen and nitrogen species (ROS/RNS) are implicated in maintaining a healthy epithelial barrier in the gut. While previous studies have indicated NOX1's involvement in microbial modulation in the small intestine, less is known about the effects of NOX1-dependent ROS/RNS formation in the colon. We investigated the role of NOX1 in the colon of NOX1 knockout (KO) and wild type (WT) mice, under mild and subclinical low-grade colon inflammation induced by 1% dextran sulfate sodium (DSS). Ex vivo imaging of ROS/RNS in the colon revealed that absence of NOX1 strongly decreased ROS/RNS production, particularly during DSS treatment. Furthermore, while absence of NOX1 did not affect disease activity, some markers of inflammation (mRNA: Tnfa, Il6, Ptgs2; protein: lipocalin 2) in the colonic mucosa tended to be higher in NOX1 KO than in WT mice following DSS treatment. Lack of NOX1 also extensively modulated the bacterial community in the colon (16S rRNA gene sequencing), where NOX1 KO mice were characterized mainly by lower α-diversity (richness and evenness), higher abundance of Firmicutes, Akkermansia, and Oscillibacter, and lower abundance of Bacteroidetes and Alistipes. Together, our data suggest that NOX1 is pivotal for colonic ROS/RNS production in mice both during steady-state (i.e., no DSS treatment) and during 1% DSS-induced low-grade inflammation and for modulation of the colonic microbiota, with potential beneficial consequences for intestinal health.
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Affiliation(s)
- Anne Mari Herfindal
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, P. O. Box 5003, N-1432, Ås, Norway.
| | - Sérgio Domingos Cardoso Rocha
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, P. O. Box 5003, N-1432, Ås, Norway; Faculty of Biosciences, Norwegian University of Life Sciences, P. O. Box 5003, N-1432, Ås, Norway.
| | - Dimitrios Papoutsis
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, P. O. Box 5003, N-1432, Ås, Norway.
| | - Siv Kjølsrud Bøhn
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, P. O. Box 5003, N-1432, Ås, Norway.
| | - Harald Carlsen
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, P. O. Box 5003, N-1432, Ås, Norway.
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21
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Epithelial chemerin-CMKLR1 signaling restricts microbiota-driven colonic neutrophilia and tumorigenesis by up-regulating lactoperoxidase. Proc Natl Acad Sci U S A 2022; 119:e2205574119. [PMID: 35858331 PMCID: PMC9304024 DOI: 10.1073/pnas.2205574119] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Intestinal barrier immunity is essential for controlling gut microbiota without eliciting harmful immune responses, while its defect contributes to the breakdown of intestinal homeostasis and colitis development. Chemerin, which is abundantly expressed in barrier tissues, has been demonstrated to regulate tissue inflammation via CMKLR1, its functional receptor. Several studies have reported the association between increased expression of chemerin-CMKLR1 and disease severity and immunotherapy resistance in inflammatory bowel disease (IBD) patients. However, the pathophysiological role of endogenous chemerin-CMKLR1 signaling in intestinal homeostasis remains elusive. We herein demonstrated that deficiency of chemerin or intestinal epithelial cell (IEC)-specific CMKLR1 conferred high susceptibility to microbiota-driven neutrophilic colon inflammation and subsequent tumorigenesis in mice following epithelial injury. Unexpectedly, we found that lack of chemerin-CMKLR1 signaling specifically reduced expression of lactoperoxidase (LPO), a peroxidase that is predominantly expressed in colonic ECs and utilizes H2O2 to oxidize thiocyanates to the antibiotic compound, thereby leading to the outgrowth and mucosal invasion of gram-negative bacteria and dysregulated CXCL1/2-mediated neutrophilia. Importantly, decreased LPO expression was causally linked to aggravated microbiota-driven colitis and associated tumorigenesis, as LPO supplementation could completely rescue such phenotypes in mice deficient in epithelial chemerin-CMKLR1 signaling. Moreover, epithelial chemerin-CMKLR1 signaling is necessary for early host defense against bacterial infection in an LPO-dependent manner. Collectively, our study reveals that the chemerin-CMKLR1/LPO axis represents an unrecognized immune mechanism that potentiates epithelial antimicrobial defense and restricts harmful colonic neutrophilia and suggests that LPO supplementation may be beneficial for microbiota dysbiosis in IBD patients with a defective innate antimicrobial mechanism.
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22
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Jurickova I, Bonkowski E, Angerman E, Novak E, Huron A, Akers G, Iwasawa K, Braun T, Hadar R, Hooker M, Han S, Cutler DJ, Okou DT, Kugathasan S, Jegga A, Wells J, Takebe T, Mollen KP, Haberman Y, Denson LA. Eicosatetraynoic Acid and Butyrate Regulate Human Intestinal Organoid Mitochondrial and Extracellular Matrix Pathways Implicated in Crohn's Disease Strictures. Inflamm Bowel Dis 2022; 28:988-1003. [PMID: 35259271 PMCID: PMC9247849 DOI: 10.1093/ibd/izac037] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Indexed: 12/19/2022]
Abstract
BACKGROUND Perturbagen analysis of Crohn's disease (CD) ileal gene expression data identified small molecules including eicosatetraynoic acid (ETYA), which may exert an antifibrotic effect. We developed a patient-specific human intestinal organoid (HIO) model system to test small molecule regulation of mitochondrial and wound-healing functions implicated in stricturing behavior. METHODS HIOs were made from CD induced pluripotent stem cells with and without a loss-of-function haplotype in the DUOX2 gene implicated in ileal homeostasis and characterized under basal conditions and following exposure to butyrate and ETYA using RNA sequencing, flow cytometry, and immunofluorescent and polarized light microscopy. Mitochondrial activity was measured using high-resolution respirometry and tissue stiffness using atomic force microscopy. RESULTS HIOs expressed core mitochondrial and extracellular matrix (ECM) genes and enriched biologic functions implicated in CD ileal strictures; ECM gene expression was suppressed by both butyrate and ETYA, with butyrate also suppressing genes regulating epithelial proliferation. Consistent with this, butyrate, but not ETYA, exerted a profound effect on HIO epithelial mitochondrial function, reactive oxygen species production, and cellular abundance. Butyrate and ETYA suppressed HIO expression of alpha smooth muscle actin expressed by myofibroblasts, type I collagen, and collagen protein abundance. HIOs exhibited tissue stiffness comparable to normal human ileum; this was reduced by chronic ETYA exposure in HIOs carrying the DUOX2 loss-of-function haplotype. CONCLUSIONS ETYA regulates ECM genes implicated in strictures and suppresses collagen content and tissue stiffness in an HIO model. HIOs provide a platform to test personalized therapeutics, including small molecules prioritized by perturbagen analysis.
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Affiliation(s)
- Ingrid Jurickova
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, the University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Erin Bonkowski
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, the University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Elizabeth Angerman
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, the University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Elizabeth Novak
- Division of General and Thoracic Surgery, UPMC Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Alex Huron
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, the University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Grayce Akers
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, the University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Kentaro Iwasawa
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, the University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Division of Biomedical Informatics, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Tzipi Braun
- Department of Pediatrics, Sheba Medical Center, Tel-Aviv University, Tel-HaShomer, Israel
| | - Rotem Hadar
- Department of Pediatrics, Sheba Medical Center, Tel-Aviv University, Tel-HaShomer, Israel
| | - Maria Hooker
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, the University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Sarah Han
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, the University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - David J Cutler
- Department of Human Genetics, Emory University, Atlanta, GA, USA
| | - David T Okou
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Emory University, Atlanta, GA, USA
| | - Subra Kugathasan
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Emory University, Atlanta, GA, USA
| | - Anil Jegga
- Division of Biomedical Informatics, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - James Wells
- Division of Developmental Biology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Takanori Takebe
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, the University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Division of Developmental Biology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Institute of Research, Tokyo Medical and Dental University, Japan
| | - Kevin P Mollen
- Division of General and Thoracic Surgery, UPMC Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Yael Haberman
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, the University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Department of Pediatrics, Sheba Medical Center, Tel-Aviv University, Tel-HaShomer, Israel
| | - Lee A Denson
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, the University of Cincinnati College of Medicine, Cincinnati, OH, USA
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23
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Identification of active compounds and molecular mechanisms of Dalbergia tsoi Merr.et Chun to accelerate wound healing. Biomed Pharmacother 2022; 150:112990. [PMID: 35462335 DOI: 10.1016/j.biopha.2022.112990] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/10/2022] [Accepted: 04/17/2022] [Indexed: 11/02/2022] Open
Abstract
As a traditional Chinese medicine, Dalbergia tsoi Merr.et Chun (JZX) has been used for the treatment of wounds since ancient times. However, the active compounds and molecular mechanisms of JZX in the acceleration of wound healing are still unknown. Herein, we explored the main active compounds and key molecular mechanisms by which JZX accelerates wound healing. The ethanol extract of JZX was subjected to UPLC-Q-Orbitrap HRMS analysis to identify the main compounds. The pharmacological effect of JZX on wound healing was evaluated using a mouse excision wound model. Network pharmacology was utilized to predict the effective compounds and related signal transduction pathways of JZX that were involved in accelerating wound healing. The predicted key signaling pathways were then validated by immunohistochemical analysis. Interactions between the active compounds and therapeutic targets were confirmed by molecular docking analysis. JZX accelerated wound healing, improved tissue quality, and inhibited inflammation and oxidative stress. Moreover, our results suggested that the active components of JZX, such as butin, eriodyctiol, and formononetin, are the key compounds that facilitate wound treatment. Our studies also indicated that JZX accelerated wound healing by regulating the PI3K/Akt signaling pathway and inducing the expression of TGF-β1, FGF2, VEGFA, ECM1, and α-SMA at different stages of skin wound healing. The JZX extract accelerates wound healing by reducing inflammation and inhibiting oxidative stress, regulating the PI3K/Akt signaling pathway, and promoting the expression of growth factors, suggesting that JZX has potential clinical applicability in wound treatment.
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24
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Allen JM, Mackos AR, Jaggers RM, Brewster PC, Webb M, Lin CH, Ladaika C, Davies R, White P, Loman BR, Bailey MT. Psychological stress disrupts intestinal epithelial cell function and mucosal integrity through microbe and host-directed processes. Gut Microbes 2022; 14:2035661. [PMID: 35184677 PMCID: PMC8865257 DOI: 10.1080/19490976.2022.2035661] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Psychological stress alters the gut microbiota and predisposes individuals to increased risk for enteric infections and chronic bowel conditions. Intestinal epithelial cells (IECs) are responsible for maintaining homeostatic interactions between the gut microbiota and its host. In this study, we hypothesized that disruption to colonic IECs is a key factor underlying stress-induced disturbances to intestinal homeostasis. Conventionally raised (CONV-R) and germ-free (GF) mice were exposed to a social disruption stressor (Str) to ascertain how stress modifies colonic IECs, the mucosal layer, and the gut microbiota. RNA sequencing of IECs isolated from CONV-R mice revealed a robust pro-inflammatory (Saa1, Il18), pro-oxidative (Duox2, Nos2), and antimicrobial (Reg3b/g) transcriptional profile as a result of Str. This response occurred concomitant to mucus layer thinning and signs of microbial translocation. In contrast to their CONV-R counterparts, IECs from GF mice or mice treated with broad spectrum antibiotics exhibited no detectable transcriptional changes in response to Str. Nevertheless, IECs from Str-exposed GF mice exhibited an altered response to ex vivo bacterial challenge (increased dual Oxidase-2 [Duox2] and nitric oxide synthase-2 (Nos2)), indicating that STR primes host IEC pro-oxidative responses. In CONV-R mice stress-induced increases in colonic Duox2 and Nos2 (ROS generating enzymes) strongly paralleled changes to microbiome composition and function, evidencing Str-mediated ROS production as a primary factor mediating gut-microbiota dysbiosis. In conclusion, a mouse model of social stress disrupts colonic epithelial and mucosal integrity, a response dependent on an intact microbiota and host stress signals. Together these preclinical findings may provide new insight into mechanisms of stress-associated bowel pathologies in humans.
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Affiliation(s)
- Jacob M. Allen
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, Illinois,Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio,CONTACT Jacob M. Allen Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, 906 S. Goodwin Ave, Urbana61820, Illinois
| | - Amy R. Mackos
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio,College of Nursing, The Ohio State University, Columbus, Ohio
| | - Robert M. Jaggers
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio
| | - Patricia C. Brewster
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Mikaela Webb
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Chia-Hao Lin
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Chris Ladaika
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio
| | - Ronald Davies
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio
| | - Peter White
- Steve and Cindy Rasmussen Institute for Genomic Medicine, Nationwide Children’s Hospital, Columbus, Ohio
| | - Brett R. Loman
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio,Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Michael T. Bailey
- Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio,Department of Pediatrics, The Ohio State University College of Medicine, Columbus, Ohio,Oral and Gi Microbiology Research Affinity Group, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio,Michael T. Bailey Center for Microbial Pathogenesis, Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, Ohio
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25
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A potent HNF4α agonist reveals that HNF4α controls genes important in inflammatory bowel disease and Paneth cells. PLoS One 2022; 17:e0266066. [PMID: 35385524 PMCID: PMC8985954 DOI: 10.1371/journal.pone.0266066] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 03/11/2022] [Indexed: 11/19/2022] Open
Abstract
HNF4α has been implicated in IBD through a number of genome-wide association studies. Recently, we developed potent HNF4α agonists, including N-trans caffeoyltyramine (NCT). NCT was identified by structural similarity to previously the previously identified but weak HNF4α agonists alverine and benfluorex. Here, we administered NCT to mice fed a high fat diet, with the goal of studying the role of HNF4α in obesity-related diseases. Intestines from NCT-treated mice were examined by RNA-seq to determine the role of HNF4α in that organ. Surprisingly, the major classes of genes altered by HNF4α were involved in IBD and Paneth cell biology. Multiple genes downregulated in IBD were induced by NCT. Paneth cells identified by lysozyme expression were reduced in high fat fed mice. NCT reversed the effect of high fat diet on Paneth cells, with multiple markers being induced, including a number of defensins, which are critical for Paneth cell function and intestinal barrier integrity. NCT upregulated genes that play important role in IBD and that are downregulated in that disease. It reversed the loss of Paneth cell markers that occurred in high fat diet fed mice. These data suggest that HNF4α could be a therapeutic target for IBD and that the agonists that we have identified could be candidate therapeutics.
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26
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Liu X, Wang J, Deng H, Zhong X, Li C, Luo Y, Chen L, Zhang B, Wang D, Huang Y, Zhang J, Guo L. In situ analysis of variations of arsenicals, microbiome and transcriptome profiles along murine intestinal tract. JOURNAL OF HAZARDOUS MATERIALS 2022; 427:127899. [PMID: 34876320 DOI: 10.1016/j.jhazmat.2021.127899] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 11/21/2021] [Accepted: 11/22/2021] [Indexed: 06/13/2023]
Abstract
In situ-based studies on microbiome-host interactions after arsenic exposure are few. In this study, the variations in arsenics, microbiota, and host genes along murine intestinal tracts were determined after arsenic exposure for two months. There was a gradual increase in the concentration of total As (CtAs) in feces from ileum to colon, whereas CtAs in the corresponding tissues were relatively stable. Differences in arsenic levels between feces and tissues were significantly different. The proportion of arsenite (iAsⅢ) in feces gradually decreased, however, it gradually increased in tissues. After arsenic exposure, the diversity and abundance of microbial community and networks in each segment were significantly dysregulated. Notably, 328, 579 and 90 differently expressed genes were detected in ileum, cecum, and colon, respectively. In addition, microbiome and transcriptome analyses showed a significant correlation between the abundance of Faecalibaculum and expressions of Plb1, Hspa1b, Areg and Duoxa2 genes. This implies that they may be involved in arsenic biotransformation. In vitro experiments using Biofidobactrium and Lactobacillus showed that probiotics have arsenic transformation abilities. Therefore, gut microbiome may modulate arsenic accumulation, excretion and detoxification along the digestive tract. Moreover, the abundance and diversity of gut microbiome may be related to the changes in host health.
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Affiliation(s)
- Xin Liu
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
| | - Jiating Wang
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
| | - Hongyu Deng
- Shenzhen Academy of Metrology and Quality Inspection, Shenzhen 518000, China.
| | - Xiaoting Zhong
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
| | - Chengji Li
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
| | - Yu Luo
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
| | - Linkang Chen
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
| | - Bin Zhang
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
| | - Dongbin Wang
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
| | - Yixiang Huang
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
| | - Jingjing Zhang
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China; Affiliated Hospital of Guangdong Medical University & Key Laboratory of Zebrafish Model for Development and Disease, Guangdong Medical University, Zhanjiang 524001, China.
| | - Lianxian Guo
- Dongguan Key Laboratory of Environmental Medicine, School of Public Health, Guangdong Medical University, Dongguan 523808, China.
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27
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Novel biallelic mutations in the DUOX2 gene underlying very early-onset inflammatory bowel disease: A case report. Clin Immunol 2022; 238:109015. [DOI: 10.1016/j.clim.2022.109015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 04/09/2022] [Accepted: 04/11/2022] [Indexed: 12/20/2022]
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28
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Mead BE, Hattori K, Levy L, Imada S, Goto N, Vukovic M, Sze D, Kummerlowe C, Matute JD, Duan J, Langer R, Blumberg RS, Ordovas-Montanes J, Yilmaz ÖH, Karp JM, Shalek AK. Screening for modulators of the cellular composition of gut epithelia via organoid models of intestinal stem cell differentiation. Nat Biomed Eng 2022; 6:476-494. [PMID: 35314801 PMCID: PMC9046079 DOI: 10.1038/s41551-022-00863-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 02/03/2022] [Indexed: 12/12/2022]
Abstract
The cellular composition of barrier epithelia is essential to organismal homoeostasis. In particular, within the small intestine, adult stem cells establish tissue cellularity, and may provide a means to control the abundance and quality of specialized epithelial cells. Yet, methods for the identification of biological targets regulating epithelial composition and function, and of small molecules modulating them, are lacking. Here we show that druggable biological targets and small-molecule regulators of intestinal stem cell differentiation can be identified via multiplexed phenotypic screening using thousands of miniaturized organoid models of intestinal stem cell differentiation into Paneth cells, and validated via longitudinal single-cell RNA-sequencing. We found that inhibitors of the nuclear exporter Exportin 1 modulate the fate of intestinal stem cells, independently of known differentiation cues, significantly increasing the abundance of Paneth cells in the organoids and in wild-type mice. Physiological organoid models of the differentiation of intestinal stem cells could find broader utility for the screening of biological targets and small molecules that can modulate the composition and function of other barrier epithelia.
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Grants
- R01 DK088199 NIDDK NIH HHS
- Howard Hughes Medical Institute
- P30 CA014051 NCI NIH HHS
- DP2 GM119419 NIGMS NIH HHS
- R01 DE013023 NIDCR NIH HHS
- P30 DK034854 NIDDK NIH HHS
- R01 HL095722 NHLBI NIH HHS
- T32 GM087237 NIGMS NIH HHS
- R01 CA034992 NCI NIH HHS
- R01 CA211184 NCI NIH HHS
- U54 CA217377 NCI NIH HHS
- INV-006897 Bill & Melinda Gates Foundation
- The National Science Foundation graduate research fellowship program and the Massachusetts Institute of Technology – GlaxoSmithKline (MIT-GSK) Gertrude B. Elion Postdoctoral fellowship.
- Fellowships from The Japanese Biochemical Society (The Osamu Hayaishi Memorial Scholarship for Study Abroad), Mochida Memorial Foundation for Medical and Pharmaceutical Research, and The Uehara Memorial Foundation.
- NIH (DE013023)
- NIH (DK088199)
- New York Stem Cell Foundation – Robertson Investigator, the Richard and Susan Smith Family Foundation, the HHMI Damon Runyon Cancer Research Foundation Fellowship (DRG-2274-16), the AGA Research Foundation’s AGA-Takeda Pharmaceuticals Research Scholar Award in IBD – AGA2020-13-01, the HDDC Pilot and Feasibility P30 DK034854, the Food Allergy Science Initiative, and The New York Stem Cell Foundation.
- NIH (R01CA211184, R01CA034992); Pew-Stewart Trust scholar award; the Kathy and Curt Marble Cancer Research Award; a Bridge grant; and the MIT Stem Cell Initiative through Fondation MIT.
- the Kenneth Rainin Foundation Innovator and Breakthrough awards, the Crohn’s and Colitis Foundation (#624458),the NIH (HL095722), and the Harvard Digestive Disease Center and NIH grant P30DK034854.
- the Beckman Young Investigator Program, the Pew-Stewart Scholars Program for Cancer Research, a Sloan Fellowship in Chemistry, the NIH (1DP2GM119419, 1U54CA217377), the Koch Institute Support (core) Grant P30-CA14051 from the National Cancer Institute, and the MIT Stem Cell Initiative through Fondation MIT.
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Affiliation(s)
- Benjamin E Mead
- Harvard-MIT Program in Health Sciences and Technology, MIT, Cambridge, MA, USA
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA, USA
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Institute for Medical Engineering and Science, MIT, Cambridge, MA, USA
- Department of Chemistry, MIT, Cambridge, MA, USA
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Kazuki Hattori
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA, USA
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Lauren Levy
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA, USA
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Shinya Imada
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA, USA
| | - Norihiro Goto
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA, USA
| | - Marko Vukovic
- Harvard-MIT Program in Health Sciences and Technology, MIT, Cambridge, MA, USA
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA, USA
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Institute for Medical Engineering and Science, MIT, Cambridge, MA, USA
- Department of Chemistry, MIT, Cambridge, MA, USA
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
- Division of Gastroenterology Boston Children's Hospital, Program in Immunology, Harvard Medical School, Boston, MA, USA
| | - Daphne Sze
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA, USA
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Conner Kummerlowe
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA, USA
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Institute for Medical Engineering and Science, MIT, Cambridge, MA, USA
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Juan D Matute
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Division of Neonatology, Department of Pediatrics, MGH Harvard Medical School, Boston, MA, USA
| | - Jinzhi Duan
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Robert Langer
- Harvard-MIT Program in Health Sciences and Technology, MIT, Cambridge, MA, USA
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA, USA
- Institute for Medical Engineering and Science, MIT, Cambridge, MA, USA
- Department of Chemical Engineering, MIT, Cambridge, MA, USA
| | - Richard S Blumberg
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Jose Ordovas-Montanes
- Harvard Stem Cell Institute, Cambridge, MA, USA
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Division of Gastroenterology Boston Children's Hospital, Program in Immunology, Harvard Medical School, Boston, MA, USA
| | - Ömer H Yilmaz
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA, USA
- Department of Pathology, MGH, Harvard Medical School, Boston, MA, USA
| | - Jeffrey M Karp
- Harvard-MIT Program in Health Sciences and Technology, MIT, Cambridge, MA, USA.
- Harvard Stem Cell Institute, Cambridge, MA, USA.
- Broad Institute of MIT and Harvard, Cambridge, MA, USA.
- Engineering in Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
| | - Alex K Shalek
- Harvard-MIT Program in Health Sciences and Technology, MIT, Cambridge, MA, USA.
- Koch Institute for Integrative Cancer Research, MIT, Cambridge, MA, USA.
- Harvard Stem Cell Institute, Cambridge, MA, USA.
- Broad Institute of MIT and Harvard, Cambridge, MA, USA.
- Institute for Medical Engineering and Science, MIT, Cambridge, MA, USA.
- Department of Chemistry, MIT, Cambridge, MA, USA.
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA.
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29
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Wang B, Zeng H, Zuo X, Yang X, Wang X, He D, Yuan J. TLR4-Dependent DUOX2 Activation Triggered Oxidative Stress and Promoted HMGB1 Release in Dry Eye. Front Med (Lausanne) 2022; 8:781616. [PMID: 35096875 PMCID: PMC8793023 DOI: 10.3389/fmed.2021.781616] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 12/09/2021] [Indexed: 12/30/2022] Open
Abstract
Dry eye disease (DED) is one of the most common ocular surface diseases worldwide. DED has been characterized by excessive accumulation of reactive oxygen species (ROS), following significant corneal epithelial cell death and ocular surface inflammation. However, the key regulatory factor remains unclear. In this study, we tended to explore whether DUOX2 contributed to DED development and the underlying mechanism. Human corneal epithelial (HCE) cells were treated with hyperosmolarity, C57BL/6 mice were injected of subcutaneous scopolamine to imitate DED. Expression of mRNA was investigated by RNA sequencing (RNA-seq) and quantitative real-time PCR (qPCR). Protein changes and distribution of DUOX2, high mobility group box 1 (HMGB1), Toll-like receptor 4 (TLR4), and 4-hydroxynonenal (4-HNE) were evaluated by western blot assays and immunofluorescence. Cell death was assessed by Cell Counting Kit-8 (CCK8), lactate dehydrogenase (LDH) release, and propidium iodide (PI) staining. Cellular ROS levels and mitochondrial membrane potential (MMP) were analyzed by flow cytometry. RNA-seq and western blot assay indicated a significant increase of DUOX2 dependent of TLR4 activation in DED both in vitro and in vivo. Immunofluorescence revealed significant translocation of HMGB1 within corneal epithelial cells under hyperosmolar stress. Interestingly, after ablated DUOX2 expression by siRNA, we found a remarkable decrease of ROS level and recovered MMP in HCE cells. Moreover, knockdown of DUOX2 greatly inhibited HMGB1 release, protected cell viability and abolished inflammatory activation. Taken together, our data here suggest that upregulation of DUOX2 plays a crucial role in ROS production, thereafter, induce HMGB1 release and cell death, which triggers ocular surface inflammation in DED.
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Affiliation(s)
- Bowen Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Sun Yat-sen University, Guangzhou, China
| | - Hao Zeng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Sun Yat-sen University, Guangzhou, China
| | - Xin Zuo
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Sun Yat-sen University, Guangzhou, China
| | - Xue Yang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Sun Yat-sen University, Guangzhou, China
| | - Xiaoran Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Sun Yat-sen University, Guangzhou, China
| | - Dalian He
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Sun Yat-sen University, Guangzhou, China
| | - Jin Yuan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Sun Yat-sen University, Guangzhou, China
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30
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Implication of Intestinal Barrier Dysfunction in Gut Dysbiosis and Diseases. Biomedicines 2022; 10:biomedicines10020289. [PMID: 35203499 PMCID: PMC8869546 DOI: 10.3390/biomedicines10020289] [Citation(s) in RCA: 83] [Impact Index Per Article: 41.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/21/2022] [Accepted: 01/24/2022] [Indexed: 02/04/2023] Open
Abstract
The intestinal mucosal barrier, also referred to as intestinal barrier, is widely recognized as a critical player in gut homeostasis maintenance as it ensures the complex crosstalk between gut microbes (both commensals and pathogens) and the host immune system. Highly specialized epithelial cells constantly cope with several protective and harmful agents to maintain the multiple physiological functions of the barrier as well as its integrity. However, both genetic defects and environmental factors can break such equilibrium, thus promoting gut dysbiosis, dysregulated immune-inflammatory responses, and even the development of chronic pathological conditions. Here, we review and discuss the molecular and cellular pathways underlying intestinal barrier structural and functional homeostasis, focusing on potential alterations that may undermine this fine balance.
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31
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Kim E, Bonnegarde-Bernard A, Opiyo SO, Joldrichsen MR, Attia Z, Ahmer BH, Cormet-Boyaka E, Boyaka PN. Pollutants enhance IgE sensitization in the gut via local alteration of vitamin D-metabolizing enzymes. Mucosal Immunol 2022; 15:143-153. [PMID: 34504311 PMCID: PMC10655957 DOI: 10.1038/s41385-021-00440-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/14/2021] [Accepted: 07/31/2021] [Indexed: 02/04/2023]
Abstract
Mechanisms linking ingested pollutants to increased incidence of allergy are poorly understood. We report that mice exposed to low doses of cadmium develop higher IgE responses following oral allergen sensitization and more severe allergic symptoms upon allergen challenge. The environmentally relevant doses of this pollutant also induced oxidative/inflammatory responses in the gut of SPF, but not germ-free mice. Interestingly, the increased IgE responses correlated with stimulation of the vitamin D3-metabolizing enzymes CYP27B1 and CYP24A1 in the gut and increased luminal levels of oxidized vitamin D3 metabolites that are not ligands of the vitamin D receptor. Inhibition of CYP27B1 and CYP24A1 via oral administration of pharmacological inhibitors reduced IgE responses induced in mice orally exposed to cadmium. Our findings identify local alteration of vitamin D signaling as a new mechanism for induction of IgE responses by environmental pollutants. They also identify vitamin D3-metabolizing enzymes as therapeutic targets for the treatment of allergy.
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Affiliation(s)
- Eunsoo Kim
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, USA
| | | | - Stephen O Opiyo
- Molecular, Cellular Imaging Center-Columbus, The Ohio State University, Columbus, OH, USA
| | - Marisa R Joldrichsen
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, USA
| | - Zayed Attia
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, USA
| | - Brian H Ahmer
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USA
| | | | - Prosper N Boyaka
- Department of Veterinary Biosciences, The Ohio State University, Columbus, OH, USA.
- Department of Microbial Infection and Immunity, The Ohio State University, Columbus, OH, USA.
- Infection Diseases Institute, The Ohio State University, Columbus, OH, USA.
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32
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Intestinal immunoregulation: lessons from human mendelian diseases. Mucosal Immunol 2021; 14:1017-1037. [PMID: 33859369 DOI: 10.1038/s41385-021-00398-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 03/03/2021] [Accepted: 03/04/2021] [Indexed: 02/04/2023]
Abstract
The mechanisms that maintain intestinal homeostasis despite constant exposure of the gut surface to multiple environmental antigens and to billions of microbes have been scrutinized over the past 20 years with the goals to gain basic knowledge, but also to elucidate the pathogenesis of inflammatory bowel diseases (IBD) and to identify therapeutic targets for these severe diseases. Considerable insight has been obtained from studies based on gene inactivation in mice as well as from genome wide screens for genetic variants predisposing to human IBD. These studies are, however, not sufficient to delineate which pathways play key nonredundant role in the human intestinal barrier and to hierarchize their respective contribution. Here, we intend to illustrate how such insight can be derived from the study of human Mendelian diseases, in which severe intestinal pathology results from single gene defects that impair epithelial and or hematopoietic immune cell functions. We suggest that these diseases offer the unique opportunity to study in depth the pathogenic mechanisms leading to perturbation of intestinal homeostasis in humans. Furthermore, molecular dissection of monogenic intestinal diseases highlights key pathways that might be druggable and therapeutically targeted in common forms of IBD.
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33
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Pfeilmeier S, Petti GC, Bortfeld-Miller M, Daniel B, Field CM, Sunagawa S, Vorholt JA. The plant NADPH oxidase RBOHD is required for microbiota homeostasis in leaves. Nat Microbiol 2021; 6:852-864. [PMID: 34194036 PMCID: PMC7612668 DOI: 10.1038/s41564-021-00929-5] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 05/25/2021] [Indexed: 02/06/2023]
Abstract
The plant microbiota consists of a multitude of microorganisms that can affect plant health and fitness. However, it is currently unclear how the plant shapes its leaf microbiota and what role the plant immune system plays in this process. Here, we evaluated Arabidopsis thaliana mutants with defects in different parts of the immune system for an altered bacterial community assembly using a gnotobiotic system. While higher-order mutants in receptors that recognize microbial features and in defence hormone signalling showed substantial microbial community alterations, the absence of the plant NADPH oxidase RBOHD caused the most pronounced change in the composition of the leaf microbiota. The rbohD knockout resulted in an enrichment of specific bacteria. Among these, we identified Xanthomonas strains as opportunistic pathogens that colonized wild-type plants asymptomatically but caused disease in rbohD knockout plants. Strain dropout experiments revealed that the lack of RBOHD unlocks the pathogenicity of individual microbiota members driving dysbiosis in rbohD knockout plants. For full protection, healthy plants require both a functional immune system and a microbial community. Our results show that the NADPH oxidase RBOHD is essential for microbiota homeostasis and emphasizes the importance of the plant immune system in controlling the leaf microbiota.
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Affiliation(s)
| | | | | | | | | | | | - Julia A. Vorholt
- Corresponding author: Correspondence should be addressed to J.A.V. ()
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34
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Dumas A, Knaus UG. Raising the 'Good' Oxidants for Immune Protection. Front Immunol 2021; 12:698042. [PMID: 34149739 PMCID: PMC8213335 DOI: 10.3389/fimmu.2021.698042] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 05/18/2021] [Indexed: 12/12/2022] Open
Abstract
Redox medicine is a new therapeutic concept targeting reactive oxygen species (ROS) and secondary reaction products for health benefit. The concomitant function of ROS as intracellular second messengers and extracellular mediators governing physiological redox signaling, and as damaging radicals instigating or perpetuating various pathophysiological conditions will require selective strategies for therapeutic intervention. In addition, the reactivity and quantity of the oxidant species generated, its source and cellular location in a defined disease context need to be considered to achieve the desired outcome. In inflammatory diseases associated with oxidative damage and tissue injury, ROS source specific inhibitors may provide more benefit than generalized removal of ROS. Contemporary approaches in immunity will also include the preservation or even elevation of certain oxygen metabolites to restore or improve ROS driven physiological functions including more effective redox signaling and cell-microenvironment communication, and to induce mucosal barrier integrity, eubiosis and repair processes. Increasing oxidants by host-directed immunomodulation or by exogenous supplementation seems especially promising for improving host defense. Here, we summarize examples of beneficial ROS in immune homeostasis, infection, and acute inflammatory disease, and address emerging therapeutic strategies for ROS augmentation to induce and strengthen protective host immunity.
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Affiliation(s)
- Alexia Dumas
- Conway Institute, School of Medicine, University College Dublin, Dublin, Ireland
| | - Ulla G Knaus
- Conway Institute, School of Medicine, University College Dublin, Dublin, Ireland
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35
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Grasberger H, Magis AT, Sheng E, Conomos MP, Zhang M, Garzotto LS, Hou G, Bishu S, Nagao-Kitamoto H, El-Zaatari M, Kitamoto S, Kamada N, Stidham RW, Akiba Y, Kaunitz J, Haberman Y, Kugathasan S, Denson LA, Omenn GS, Kao JY. DUOX2 variants associate with preclinical disturbances in microbiota-immune homeostasis and increased inflammatory bowel disease risk. J Clin Invest 2021; 131:141676. [PMID: 33651715 DOI: 10.1172/jci141676] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 02/25/2021] [Indexed: 12/18/2022] Open
Abstract
A primordial gut-epithelial innate defense response is the release of hydrogen peroxide by dual NADPH oxidase (DUOX). In inflammatory bowel disease (IBD), a condition characterized by an imbalanced gut microbiota-immune homeostasis, DUOX2 isoenzyme is the highest induced gene. Performing multiomic analyses using 2872 human participants of a wellness program, we detected a substantial burden of rare protein-altering DUOX2 gene variants of unknown physiologic significance. We identified a significant association between these rare loss-of-function variants and increased plasma levels of interleukin-17C, which is induced also in mucosal biopsies of patients with IBD. DUOX2-deficient mice replicated increased IL-17C induction in the intestine, with outlier high Il17c expression linked to the mucosal expansion of specific Proteobacteria pathobionts. Integrated microbiota/host gene expression analyses in patients with IBD corroborated IL-17C as a marker for epithelial activation by gram-negative bacteria. Finally, the impact of DUOX2 variants on IL-17C induction provided a rationale for variant stratification in case control studies that substantiated DUOX2 as an IBD risk gene. Thus, our study identifies an association of deleterious DUOX2 variants with a preclinical hallmark of disturbed microbiota-immune homeostasis that appears to precede the manifestation of IBD.
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Affiliation(s)
- Helmut Grasberger
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Andrew T Magis
- Institute for Systems Biology, Seattle, Washington, USA.,Arivale Inc., Seattle, Washington, USA
| | | | - Matthew P Conomos
- Arivale Inc., Seattle, Washington, USA.,Department of Biostatistics, University of Washington, Seattle, Washington, USA
| | - Min Zhang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Lea S Garzotto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Guoqing Hou
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Shrinivas Bishu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Hiroko Nagao-Kitamoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Mohamad El-Zaatari
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Sho Kitamoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Nobuhiko Kamada
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Ryan W Stidham
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Yasutada Akiba
- West Los Angeles VA Medical Center and Departments of Medicine and Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Jonathan Kaunitz
- West Los Angeles VA Medical Center and Departments of Medicine and Surgery, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Yael Haberman
- Cincinnati Children's Hospital Medical Center, and the University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Subra Kugathasan
- Departments of Pediatrics and Human Genetics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Lee A Denson
- Cincinnati Children's Hospital Medical Center, and the University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Gilbert S Omenn
- Departments of Computational Medicine & Bioinformatics, Internal Medicine, Human Genetics, and School of Public Health, University of Michigan, Ann Arbor, Michigan, USA
| | - John Y Kao
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
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Sienkiewicz M, Szymańska P, Fichna J. Supplementation of Bovine Colostrum in Inflammatory Bowel Disease: Benefits and Contraindications. Adv Nutr 2021; 12:533-545. [PMID: 33070186 PMCID: PMC8009748 DOI: 10.1093/advances/nmaa120] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/06/2020] [Accepted: 09/03/2020] [Indexed: 12/12/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a group of chronic relapsing disorders whose etiology has not been fully explained. Therefore, available therapeutic approaches for IBD patients are still insufficient. Current treatment strategies are targeted to immune system dysfunctions, often associated with alternations in the microbiota, which contribute to the development of chronic intestinal inflammation. Therapeutics include anti-inflammatory drugs such as aminosalicylates and corticosteroids, immunosuppressive agents, antibiotics, and biological agents such as infliximab and vedolizumab. Auxiliary therapies involve a balanced and personalized diet, healthy lifestyle, avoiding stress, as well as dietary supplements. In this review, we discuss the use of bovine colostrum (BC) as a therapeutic agent, including its advantages and contraindications. We summarize our knowledge on well-researched BC constituents and their effects on the gastrointestinal tract as evidenced in in vitro and in vivo studies.
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Affiliation(s)
- Michał Sienkiewicz
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
| | - Patrycja Szymańska
- Department of Hemostasis and Hemostatic Disorders, Faculty of Health Sciences, Medical University of Lodz, Lodz, Poland
| | - Jakub Fichna
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Lodz, Poland
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Zhang X, Han J, Feng L, Zhi L, Jiang D, Yu B, Zhang Z, Gao B, Zhang C, Li M, Zhao L, Wang G. DUOX2 promotes the progression of colorectal cancer cells by regulating the AKT pathway and interacting with RPL3. Carcinogenesis 2021; 42:105-117. [PMID: 32531052 PMCID: PMC7877561 DOI: 10.1093/carcin/bgaa056] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/28/2020] [Accepted: 06/08/2020] [Indexed: 12/13/2022] Open
Abstract
Dual oxidase 2 (DUOX2) is an important regulatory protein in the organic process of thyroid hormone iodine. Mounting evidence suggests that DUOX2 plays a crucial role in the occurrence and development of cancers. However, the function and mechanism of DUOX2 in colorectal cancer (CRC) have not been fully clarified. In the present study, the relationship between the expression of DUOX2 and the clinicopathological features and prognosis of CRC patients was analyzed. Furthermore, the effects of DUOX2 on proliferation and invasion in vitro and in vivo were examined. DUOX2-associated proteins were identified by immunoprecipitation (IP). Next-generation sequencing detection was performed to illustrate the mechanism of DUOX2 in CRC cells. It was found that the expression levels of DUOX2 in metastatic sites were significantly higher than those in primary tumor tissues, and this was demonstrated to be associated with poor prognosis. The knockdown of DUOX2 inhibited the invasion and migration of CRC cells. Furthermore, DUOX2 regulated the stability of ribosomal protein uL3 (RPL3) by affecting the ubiquitination status of RPL3, and the invasion and migration ability of DUOX2 can be reversed by the overexpression of RPL3. The downregulation of DUOX2 can affect the expression level of a large number of genes, and a number of these are enriched in the PI3K-AKT pathway. Some of the changes caused by DUOX2 can be reversed by RPL3. In summary, DUOX2 exhibits a significantly higher expression in CRC tumor samples, and facilitates the invasion and metastasis ability of CRC cells by interacting with RPL3.
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Affiliation(s)
- Xue Zhang
- Department of Medical Oncology, Hebei Medical University Fourth Affiliated Hospital, Shijiazhuang, Hebei, China
- The Second General Surgery, Hebei Medical University Fourth Affiliated Hospital, Shijiazhuang, Hebei, China
| | - Jing Han
- Department of Medical Oncology, Hebei Medical University Fourth Affiliated Hospital, Shijiazhuang, Hebei, China
- The Second General Surgery, Hebei Medical University Fourth Affiliated Hospital, Shijiazhuang, Hebei, China
| | - Li Feng
- Department of Medical Oncology, Hebei Medical University Fourth Affiliated Hospital, Shijiazhuang, Hebei, China
| | - Lianghui Zhi
- The Second General Surgery, Hebei Medical University Fourth Affiliated Hospital, Shijiazhuang, Hebei, China
| | - Da Jiang
- Department of Medical Oncology, Hebei Medical University Fourth Affiliated Hospital, Shijiazhuang, Hebei, China
| | - Bin Yu
- The Second General Surgery, Hebei Medical University Fourth Affiliated Hospital, Shijiazhuang, Hebei, China
| | - Zhenya Zhang
- The Second General Surgery, Hebei Medical University Fourth Affiliated Hospital, Shijiazhuang, Hebei, China
| | - Bo Gao
- The Second General Surgery, Hebei Medical University Fourth Affiliated Hospital, Shijiazhuang, Hebei, China
| | - Cong Zhang
- Scientific Research Center, Hebei Medical University Fourth Affiliated Hospital, Shijiazhuang, Hebei, China
| | - Meng Li
- The Second General Surgery, Hebei Medical University Fourth Affiliated Hospital, Shijiazhuang, Hebei, China
| | - Lianmei Zhao
- Scientific Research Center, Hebei Medical University Fourth Affiliated Hospital, Shijiazhuang, Hebei, China
| | - Guiying Wang
- The Second General Surgery, Hebei Medical University Fourth Affiliated Hospital, Shijiazhuang, Hebei, China
- Department of General Surgery, Hebei Medical University Third Affiliated Hospital, Shijiazhuang, Hebei, China
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Burgueño JF, Fritsch J, Gonzalez EE, Landau KS, Santander AM, Fernández I, Hazime H, Davies JM, Santaolalla R, Phillips MC, Diaz S, Dheer R, Brito N, Pignac-Kobinger J, Fernández E, Conner GE, Abreu MT. Epithelial TLR4 Signaling Activates DUOX2 to Induce Microbiota-Driven Tumorigenesis. Gastroenterology 2021; 160:797-808.e6. [PMID: 33127391 PMCID: PMC7879481 DOI: 10.1053/j.gastro.2020.10.031] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 09/28/2020] [Accepted: 10/20/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS Chronic colonic inflammation leads to dysplasia and cancer in patients with inflammatory bowel disease. We have described the critical role of innate immune signaling via Toll-like receptor 4 (TLR4) in the pathogenesis of dysplasia and cancer. In the current study, we interrogate the intersection of TLR4 signaling, epithelial redox activity, and the microbiota in colitis-associated neoplasia. METHODS Inflammatory bowel disease and colorectal cancer data sets were analyzed for expression of TLR4, dual oxidase 2 (DUOX2), and NADPH oxidase 1 (NOX1). Epithelial production of hydrogen peroxide (H2O2) was analyzed in murine colonic epithelial cells and colonoid cultures. Colorectal cancer models were carried out in villin-TLR4 mice, carrying a constitutively active form of TLR4, their littermates, and villin-TLR4 mice backcrossed to DUOXA-knockout mice. The role of the TLR4-shaped microbiota in tumor development was tested in wild-type germ-free mice. RESULTS Activation of epithelial TLR4 was associated with up-regulation of DUOX2 and NOX1 in inflammatory bowel disease and colorectal cancer. DUOX2 was exquisitely dependent on TLR4 signaling and mediated the production of epithelial H2O2. Epithelial H2O2 was significantly increased in villin-TLR4 mice; TLR4-dependent tumorigenesis required the presence of DUOX2 and a microbiota. Mucosa-associated microbiota transferred from villin-TLR4 mice to wild-type germ-free mice caused increased H2O2 production and tumorigenesis. CONCLUSIONS Increased TLR4 signaling in colitis drives expression of DUOX2 and epithelial production of H2O2. The local milieu imprints the mucosal microbiota and imbues it with pathogenic properties demonstrated by enhanced epithelial reactive oxygen species and increased development of colitis-associated tumors. The inter-relationship between epithelial reactive oxygen species and tumor-promoting microbiota requires a 2-pronged strategy to reduce the risk of dysplasia in colitis patients.
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Affiliation(s)
- Juan F Burgueño
- Department of Medicine, Division of Gastroenterology, University of Miami – Miller School of Medicine, Miami, FL, USA
| | - Julia Fritsch
- Department of Medicine, Division of Gastroenterology, University of Miami – Miller School of Medicine, Miami, FL, USA,Department of Microbiology and Immunology, University of Miami – Miller School of Medicine, Miami, FL, USA
| | - Eddy E Gonzalez
- Biotechnology and Biopharmaceuticals Laboratory, Department of Pathophysiology, School of Biological Science, Universidad de Concepción, Concepción, Chile
| | - Kevin S Landau
- Department of Medicine, Division of Gastroenterology, University of Miami – Miller School of Medicine, Miami, FL, USA
| | - Ana M Santander
- Department of Medicine, Division of Gastroenterology, University of Miami – Miller School of Medicine, Miami, FL, USA
| | - Irina Fernández
- Department of Medicine, Division of Gastroenterology, University of Miami – Miller School of Medicine, Miami, FL, USA
| | - Hajar Hazime
- Department of Medicine, Division of Gastroenterology, University of Miami – Miller School of Medicine, Miami, FL, USA
| | - Julie M Davies
- Department of Medicine, Division of Gastroenterology, University of Miami – Miller School of Medicine, Miami, FL, USA
| | - Rebeca Santaolalla
- Department of Medicine, Division of Gastroenterology, University of Miami – Miller School of Medicine, Miami, FL, USA
| | - Matthew C Phillips
- Department of Medicine, Division of Gastroenterology, University of Miami – Miller School of Medicine, Miami, FL, USA
| | - Sophia Diaz
- Department of Medicine, Division of Gastroenterology, University of Miami – Miller School of Medicine, Miami, FL, USA
| | - Rishu Dheer
- Department of Medicine, Division of Gastroenterology, University of Miami – Miller School of Medicine, Miami, FL, USA
| | - Nivis Brito
- Department of Medicine, Division of Gastroenterology, University of Miami – Miller School of Medicine, Miami, FL, USA
| | - Judith Pignac-Kobinger
- Department of Medicine, Division of Gastroenterology, University of Miami – Miller School of Medicine, Miami, FL, USA
| | - Ester Fernández
- Animal Physiology Unit, Department of Cell Biology, Physiology and Immunology, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Gregory E Conner
- Department of Cell Biology, University of Miami – Miller School of Medicine, Miami, FL, USA
| | - Maria T Abreu
- Department of Medicine, Division of Gastroenterology, University of Miami-Miller School of Medicine, Miami, Florida; Department of Microbiology and Immunology, University of Miami-Miller School of Medicine, Miami, Florida.
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In Vivo Transcriptome of Lactobacillus acidophilus and Colonization Impact on Murine Host Intestinal Gene Expression. mBio 2021; 12:mBio.03399-20. [PMID: 33500337 PMCID: PMC7858073 DOI: 10.1128/mbio.03399-20] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Lactobacillus acidophilus NCFM is a probiotic strain commonly used in dairy products and dietary supplements. Postgenome in vitro studies of NCFM thus far have linked potential key genotypes to its probiotic-relevant attributes, including gut survival, prebiotic utilization, host interactions, and immunomodulatory activities. To corroborate and extend beyond previous in vivo and in vitro functional studies, we employed a dual RNA sequencing (RNA-seq) transcriptomic approach to identify genes potentially driving the gut fitness and activities of L. acidophilus NCFM in vivo, and in parallel, examine the ileal transcriptional response of its murine hosts during monocolonization. Spatial expression profiling of NCFM from the ileum through the colon revealed a set of 134 core genes that were consistently overexpressed during gut transit. These in vivo core genes are predominantly involved in the metabolism of carbohydrates, amino acids, and nucleotides, along with mucus-binding proteins and adhesion factors, confirming their functionally important roles in nutrient acquisition and gut retention. Functional characterization of the highly expressed major S-layer-encoding gene established its indispensable role as a cell shape determinant and maintenance of cell surface integrity, essential for viability and probiotic attributes. Host colonization by L. acidophilus resulted in significant downregulation of several proinflammatory cytokines and tight junction proteins. Genes related to redox signaling, mucin glycosylation, and circadian rhythm modulation were induced, suggesting impacts on intestinal development and immune functions. Metagenomic analysis of NCFM populations postcolonization demonstrated the genomic stability of L. acidophilus as a gut transient and further established its safety as a probiotic and biotherapeutic delivery platform.IMPORTANCE To date, our basis for comprehending the probiotic mechanisms of Lactobacillus acidophilus, one of the most widely consumed probiotic microbes, was largely limited to in vitro functional genomic studies. Using a germfree murine colonization model, in vivo-based transcriptional studies provided the first view of how L. acidophilus survives in the mammalian gut environment, including gene expression patterns linked to survival, efficient nutrient acquisition, stress adaptation, and host interactions. Examination of the host ileal transcriptional response, the primary effector site of L. acidophilus, has also shed light into the mechanistic roles of this probiotic microbe in promoting anti-inflammatory responses, maintaining intestinal epithelial homeostasis and modulation of the circadian-metabolic axis in its host.
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40
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Yang M, Zhao Y, Ding Y, Wang J, Tan Y, Xu D, Yuan Y. A truncated protein product of the germline variant of the DUOX2 gene leads to adenomatous polyposis. Cancer Biol Med 2021; 18:215-226. [PMID: 33628596 PMCID: PMC7877186 DOI: 10.20892/j.issn.2095-3941.2020.0305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 09/08/2020] [Indexed: 12/12/2022] Open
Abstract
Objective: In some patients with adenomatous polyposis, an identifiable pathogenic variant of known associated genes cannot be found. Researchers have studied this for decades; however, few new genes have been identified. Methods: Adenomatous polyposis coli (APC) negative polyposis patients were identified through next-generation sequencing and multiplex ligation-dependent probe amplification. Then, whole-exome sequencing (WES) was used to determine candidate genes harboring pathogenic variants. Functional experiments were performed to explore their effects. Subsequently, using Sanger sequencing, we found other polyposis patients carrying variants of the DUOX2 gene, encoding dual oxidase 2, and analyzed them. Results: From 88 patients with suspected familial adenomatous polyposis, 25 unrelated APC negative polyposis patients were identified. Based on the WES results of 3 patients and 2 healthy relatives from a family, the germline nonsense variant (c.1588A>T; p.K530X) of the DUOX2 gene was speculated to play a decisive role in the pedigree in relation to adenomatous polyposis. During functional experiments, we observed that the truncated protein, hDuox2 K530, was overexpressed in the adenoma in a carrier of the DUOX2 nonsense variant, causing abnormal cell proliferation through endoplasmic reticulum (ER) retention. In addition, we found two unrelated APC negative patients carrying DUOX2 missense variants (c.3329G>A, p.R1110Q; c.4027C>T, p.L1343F). Given the results of the in silico analysis, these two missense variants might exert a negative influence on the function of hDuox2. Conclusions: To our knowledge, this is the first study that reports the possible association of DUOX2 germline variants with adenomatous polyposis. With an autosomal dominant inheritance, it causes ER retention, inducing an unfolded protein response.
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Affiliation(s)
- Mengyuan Yang
- Department of Medical Oncology, Zhejiang University School of Medicine, Hangzhou 310009, China.,Cancer Institute, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Yingxin Zhao
- Department of Medical Oncology, Zhejiang University School of Medicine, Hangzhou 310009, China.,Cancer Institute, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Yuwei Ding
- Department of Medical Oncology, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Juan Wang
- Department of Medical Oncology, Zhejiang University School of Medicine, Hangzhou 310009, China.,Cancer Institute, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Yinuo Tan
- Department of Medical Oncology, Zhejiang University School of Medicine, Hangzhou 310009, China.,Cancer Institute, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Dong Xu
- Department of Colorectal Surgery and Oncology, Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Ying Yuan
- Department of Medical Oncology, Zhejiang University School of Medicine, Hangzhou 310009, China.,Cancer Institute, Zhejiang University School of Medicine, Hangzhou 310009, China
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Yang HT, Huang YH, Yang GW. Mini review: immunologic functions of dual oxidases in mucosal systems of vertebrates. BRAZ J BIOL 2020; 80:948-956. [DOI: 10.1590/1519-6984.208749] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Accepted: 05/08/2019] [Indexed: 12/30/2022] Open
Abstract
Abstract Mucosal epithelial cells act as the first immunologic barrier of organisms, and contact directly with pathogens. Therefore, hosts must have differential strategies to combat pathogens efficiently. Reactive oxygen species (ROS), as a kind of oxidizing agents, participates in the early stage of killing pathogens quickly. Recent reports have revealed that dual oxidase (DUOX) plays a key role in mucosal immunity. And the DUOX is a transmembrane protein which produces ROS as their primary enzymatic products. This process is an important pattern for eliminating pathogens. In this review, we highlight the DUOX immunologic functions in the respiratory and digestive tract of vertebrates.
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NOX2-Derived Reactive Oxygen Species in Cancer. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:7095902. [PMID: 33312338 PMCID: PMC7721506 DOI: 10.1155/2020/7095902] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 10/21/2019] [Indexed: 12/16/2022]
Abstract
The formation of reactive oxygen species (ROS) by the myeloid cell NADPH oxidase NOX2 is critical for the destruction of engulfed microorganisms. However, recent studies imply that ROS, formed by NOX2+ myeloid cells in the malignant microenvironment, exert multiple actions of relevance to the growth and spread of neoplastic cells. By generating ROS, tumor-infiltrating myeloid cells and NOX2+ leukemic myeloid cells may thus (i) compromise the function and viability of adjacent cytotoxic lymphocytes, including natural killer (NK) cells and T cells, (ii) oxidize DNA to trigger cancer-promoting somatic mutations, and (iii) affect the redox balance in cancer cells to control their proliferation and survival. Here, we discuss the impact of NOX2-derived ROS for tumorigenesis, tumor progression, regulation of antitumor immunity, and metastasis. We propose that NOX2 may be a targetable immune checkpoint in cancer.
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43
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Jones RM, Neish AS. Gut Microbiota in Intestinal and Liver Disease. ANNUAL REVIEW OF PATHOLOGY-MECHANISMS OF DISEASE 2020; 16:251-275. [PMID: 33234022 DOI: 10.1146/annurev-pathol-030320-095722] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
It is known that the gut microbiota, the numerically vast and taxonomically diverse microbial communities that thrive in a symbiotic fashion within our alimentary tract, can affect the normal physiology of the gastrointestinal tract and liver. Further, disturbances of the microbiota community structure from both endogenous and exogenous influences as well as the failure of host responsive mechanisms have been implicated in a variety of disease processes. Mechanistically, alterations in intestinal permeability and dysbiosis of the microbiota can result in inflammation, immune activation, and exposure to xenobiotic influences. Additionally, the gut and liver are continually exposed to small molecule products of the microbiota with proinflammatory, gene regulatory, and oxidative properties. Long-term coevolution has led to tolerance and incorporation of these influences into normal physiology and homeostasis; conversely, changes in this equilibrium from either the host or the microbial side can result in a wide variety of immune, inflammatory, metabolic, and neoplastic intestinal and hepatic disorders.
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Affiliation(s)
- Rheinallt M Jones
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia 30322, USA;
| | - Andrew S Neish
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, Georgia 30322, USA;
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Characterization of Gut Microbiome in Liver Transplant Recipients With Nonalcoholic Steatohepatitis. Transplant Direct 2020; 6:e625. [PMID: 33204823 PMCID: PMC7665248 DOI: 10.1097/txd.0000000000001033] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 06/03/2020] [Indexed: 12/18/2022] Open
Abstract
Supplemental Digital Content is available in the text. Nonalcoholic fatty liver disease (NAFLD) and its progressive form nonalcoholic steatohepatitis (NASH) are a growing problem globally and recur even after liver transplant (LT). We aim to characterize the gut dysbiosis in patients who developed recurrent NAFLD compared with patients without recurrence following LT.
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45
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Huang W, Yu J, Liu T, Tudor G, Defnet AE, Zalesak S, Kumar P, Booth C, Farese AM, MacVittie TJ, Kane MA. Proteomic Evaluation of the Natural History of the Acute Radiation Syndrome of the Gastrointestinal Tract in a Non-human Primate Model of Partial-body Irradiation with Minimal Bone Marrow Sparing Includes Dysregulation of the Retinoid Pathway. HEALTH PHYSICS 2020; 119:604-620. [PMID: 32947489 PMCID: PMC7541663 DOI: 10.1097/hp.0000000000001351] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Exposure to ionizing radiation results in injuries of the hematopoietic, gastrointestinal, and respiratory systems, which are the leading causes responsible for morbidity and mortality. Gastrointestinal injury occurs as an acute radiation syndrome. To help inform on the natural history of the radiation-induced injury of the partial body irradiation model, we quantitatively profiled the proteome of jejunum from non-human primates following 12 Gy partial body irradiation with 2.5% bone marrow sparing over a time period of 3 wk. Jejunum was analyzed by liquid chromatography-tandem mass spectrometry, and pathway and gene ontology analysis were performed. A total of 3,245 unique proteins were quantified out of more than 3,700 proteins identified in this study. Also a total of 289 proteins of the quantified proteins showed significant and consistent responses across at least three time points post-irradiation, of which 263 proteins showed strong upregulations while 26 proteins showed downregulations. Bioinformatic analysis suggests significant pathway and upstream regulator perturbations post-high dose irradiation and shed light on underlying mechanisms of radiation damage. Canonical pathways altered by radiation included GP6 signaling pathway, acute phase response signaling, LXR/RXR activation, and intrinsic prothrombin activation pathway. Additionally, we observed dysregulation of proteins of the retinoid pathway and retinoic acid, an active metabolite of vitamin A, as quantified by liquid chromatography-tandem mass spectrometry. Correlation of changes in protein abundance with a well-characterized histological endpoint, corrected crypt number, was used to evaluate biomarker potential. These data further define the natural history of the gastrointestinal acute radiation syndrome in a non-human primate model of partial body irradiation with minimal bone marrow sparing.
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Affiliation(s)
- Weiliang Huang
- University of Maryland, School of Pharmacy, Department of Pharmaceutical Sciences, Baltimore, MD, USA
| | - Jianshi Yu
- University of Maryland, School of Pharmacy, Department of Pharmaceutical Sciences, Baltimore, MD, USA
| | - Tian Liu
- University of Maryland, School of Pharmacy, Department of Pharmaceutical Sciences, Baltimore, MD, USA
| | | | - Amy E Defnet
- University of Maryland, School of Pharmacy, Department of Pharmaceutical Sciences, Baltimore, MD, USA
| | - Stephanie Zalesak
- University of Maryland, School of Pharmacy, Department of Pharmaceutical Sciences, Baltimore, MD, USA
| | - Praveen Kumar
- University of Maryland, School of Pharmacy, Department of Pharmaceutical Sciences, Baltimore, MD, USA
| | | | - Ann M. Farese
- University of Maryland, School of Medicine, Department of Radiation Oncology, Baltimore, MD 21201
| | - Thomas J. MacVittie
- University of Maryland, School of Medicine, Department of Radiation Oncology, Baltimore, MD 21201
| | - Maureen A Kane
- University of Maryland, School of Pharmacy, Department of Pharmaceutical Sciences, Baltimore, MD, USA
- Correspondence: Maureen A. Kane, University of Maryland, School of Pharmacy, Department of Pharmaceutical Sciences, 20 N. Pine Street, Room N731, Baltimore, MD 21201, Phone: (410) 706-5097, Fax: (410) 706-0886,
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Chu F, Esworthy RS, Shen B, Doroshow JH. Role of the microbiota in ileitis of a mouse model of inflammatory bowel disease-Glutathione peroxide isoenzymes 1 and 2-double knockout mice on a C57BL background. Microbiologyopen 2020; 9:e1107. [PMID: 32810389 PMCID: PMC7568258 DOI: 10.1002/mbo3.1107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 07/19/2020] [Accepted: 07/25/2020] [Indexed: 12/13/2022] Open
Abstract
C57Bl6 (B6) mice devoid of glutathione peroxidases 1 and 2 (Gpx1/2-DKO) develop ileitis after weaning. We previously showed germ-free Gpx1/2-DKO mice of mixed B6.129 background did not develop ileocolitis. Here, we examine the composition of the ileitis provoking microbiota in B6 Gpx1/2-DKO mice. DNA was isolated from the ileum fecal stream and subjected to high-throughput sequencing of the V3 and V4 regions of the 16S rRNA gene to determine the abundance of operational taxonomic units (OTUs). We analyzed the role of bacteria by comparing the microbiomes of the DKO and pathology-free non-DKO mice. Mice were treated with metronidazole, streptomycin, and vancomycin to alter pathology and correlate the OTU abundances with pathology levels. Principal component analysis based on Jaccard distance of abundance showed 3 distinct outcomes relative to the source Gpx1/2-DKO microbiome. Association analyses of pathology and abundance of OTUs served to rule out 7-11 of 24 OTUs for involvement in the ileitis. Collections of OTUs were identified that appeared to be linked to ileitis in this animal model and would be classified as commensals. In Gpx1/2-DKO mice, host oxidant generation from NOX1 and DUOX2 in response to commensals may compromise the ileum epithelial barrier, a role generally ascribed to oxidants generated from mitochondria, NOX2 and endoplasmic reticulum stress in response to presumptive pathogens in IBD. Elevated oxidant levels may contribute to epithelial cell shedding, which is strongly associated with progress toward inflammation in Gpx1/2-DKO mice and predictive of relapse in IBD by allowing leakage of microbial components into the submucosa.
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Affiliation(s)
- Fong‐Fong Chu
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital and College of Clinical Medicine of HenanUniversity of Science and TechnologyLuoyangChina
| | - R. Steven Esworthy
- Department of Cancer Genetics and EpigeneticsBeckman Research InstituteCity of HopeDuarteCAUSA
| | - Binghui Shen
- Department of Cancer Genetics and EpigeneticsBeckman Research InstituteCity of HopeDuarteCAUSA
| | - James H. Doroshow
- Center for Cancer Research and Division of Cancer Treatment and DiagnosisNational Cancer InstituteBethesdaMDUSA
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TNF Receptor 1 Promotes Early-Life Immunity and Protects against Colitis in Mice. Cell Rep 2020; 33:108275. [PMID: 33086075 PMCID: PMC7682618 DOI: 10.1016/j.celrep.2020.108275] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 08/05/2020] [Accepted: 09/23/2020] [Indexed: 02/08/2023] Open
Abstract
Neutralization of tumor necrosis factor (TNF) represents a widely used therapeutic strategy for autoimmune diseases including inflammatory bowel disease (IBD). However, the fact that many patients with IBD are non-responsive to anti-TNF therapies suggests the need for a better understanding of TNF signaling in IBD. Here, we show that co-deletion of TNF receptor 1 (TNFR1, Tnfrsf1a) in the Il10-/- spontaneous colitis model exacerbates disease, resulting in very-early-onset inflammation after weaning. The disease can be interrupted by treatment with antibiotics. The single deletion of TNFR1 induces subclinical colonic epithelial dysfunction and mucosal immune abnormalities, including accumulation of neutrophils and depletion of B cells. During the pre-disease period (before weaning), both Tnfr1-/- and Il10-/-Tnfr1-/- animals exhibit impaired expression of pro-inflammatory cytokines compared with wild-type and Il10-/- controls, respectively. Collectively, these results demonstrate the net anti-inflammatory functions of TNF/TNFR1 signaling through the regulation of colonic immune homeostasis in early life.
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48
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Dang PMC, Rolas L, El-Benna J. The Dual Role of Reactive Oxygen Species-Generating Nicotinamide Adenine Dinucleotide Phosphate Oxidases in Gastrointestinal Inflammation and Therapeutic Perspectives. Antioxid Redox Signal 2020; 33:354-373. [PMID: 31968991 DOI: 10.1089/ars.2020.8018] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Significance: Despite their intrinsic cytotoxic properties, mounting evidence indicates that reactive oxygen species (ROS) physiologically produced by the nicotinamide adenine dinucleotide phosphate (NADPH) oxidases (NOXs) of epithelial cells (NOX1, dual oxidase [DUOX]2) and phagocytes (NOX2) are critical for innate immune response and homeostasis of the intestinal mucosa. However, dysregulated ROS production could be a driving factor in inflammatory bowel diseases (IBDs). Recent Advances: In addition to NOX2, recent studies have demonstrated that NOX1- and DUOX2-derived ROS can regulate intestinal innate immune defense and homeostasis by impacting many processes, including bacterial virulence, expression of bacteriostatic proteins, epithelial renewal and restitution, and microbiota composition. Moreover, the antibacterial role of DUOX2 is a function conserved in evolution as it has been described in invertebrates, and lower and higher vertebrates. In humans, variants of the NOX2, NOX1, and DUOX2 genes, which are associated with impaired ROS production, have been identified in very early onset IBD, but overexpression of NOX/DUOX, especially DUOX2, has also been described in IBD, suggesting that loss-of-function or excessive activity of the ROS-generating enzymes could contribute to disease progression. Critical Issues: Therapeutic perspectives aiming at targeting NOX/DUOX in IBD should take into account the two sides of NOX/DUOX-derived ROS in intestinal inflammation. Hence, NOX/DUOX inhibitors or ROS inducers should be considered as a function of the disease context. Future Directions: A thorough understanding of the physiological and pathological regulation of NOX/DUOX in the gastrointestinal tract is an absolute pre-requisite for the development of therapeutic strategies that can modulate ROS levels in space and time.
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Affiliation(s)
- Pham My-Chan Dang
- INSERM-U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation, Paris, France.,Faculté de Médecine, Laboratoire d'Excellence Inflamex, DHU FIRE, Université de Paris, Paris, France
| | - Loïc Rolas
- INSERM-U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation, Paris, France
| | - Jamel El-Benna
- INSERM-U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation, Paris, France.,Faculté de Médecine, Laboratoire d'Excellence Inflamex, DHU FIRE, Université de Paris, Paris, France
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49
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Lee HS, Vancamelbeke M, Verstockt S, Wilms T, Verstockt B, Sabino J, Ferrante M, Vermeire S, Cleynen I. Molecular Changes in the Non-Inflamed Terminal Ileum of Patients with Ulcerative Colitis. Cells 2020; 9:cells9081793. [PMID: 32731480 PMCID: PMC7464680 DOI: 10.3390/cells9081793] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/22/2020] [Accepted: 07/24/2020] [Indexed: 12/19/2022] Open
Abstract
Ulcerative colitis is a chronic inflammatory disease confined to the colon. Although the etiopathogenesis remains unknown, small bowel dysfunctions like histological and permeability alterations have been described in ulcerative colitis. We evaluated the molecular gene signature in the non-inflamed terminal ileum of 36 ulcerative colitis patients (7 active, with Mayo endoscopic subscore ≥2, and 29 inactive) as compared to 15 non-inflammatory bowel disease controls. Differential gene expression analysis with DESeq2 showed distinct expression patterns depending on disease activity and maximal disease extent. We found 84 dysregulated genes in patients with active extensive colitis and 20 in inactive extensive colitis, compared to controls. There was an overlap of 5 genes: REG1B, REG1A, MUC4, GRAMD2, and CASP10. In patients with left-sided colitis, ileal gene expression levels were similar to controls. Based on gene co-expression analysis, ileal changes in active ulcerative colitis patients were related to immune functions. The ileal changes in the inactive ulcerative colitis subjects converged into the maintenance of the intestinal barrier through increased mitochondrial function and dampened immune functions. In conclusion, we identified molecular changes in the non-inflamed ileum of ulcerative colitis that are dependent on colonic inflammation.
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Affiliation(s)
- Ho-Su Lee
- Laboratory of Complex Genetics, Department of Human Genetics, KU Leuven, 3000 Leuven, Belgium; (H.-S.L.); (S.V.); (T.W.)
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Maaike Vancamelbeke
- Translational Research Center for Gastrointestinal Disorders (TARGID), Department Chronic Diseases, Metabolism & Ageing (CHROMETA), KU Leuven, 3000 Leuven, Belgium; (M.V.); (B.V.); (J.S.); (M.F.); (S.V.)
| | - Sare Verstockt
- Laboratory of Complex Genetics, Department of Human Genetics, KU Leuven, 3000 Leuven, Belgium; (H.-S.L.); (S.V.); (T.W.)
| | - Tom Wilms
- Laboratory of Complex Genetics, Department of Human Genetics, KU Leuven, 3000 Leuven, Belgium; (H.-S.L.); (S.V.); (T.W.)
| | - Bram Verstockt
- Translational Research Center for Gastrointestinal Disorders (TARGID), Department Chronic Diseases, Metabolism & Ageing (CHROMETA), KU Leuven, 3000 Leuven, Belgium; (M.V.); (B.V.); (J.S.); (M.F.); (S.V.)
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, 3000 Leuven, Belgium
| | - João Sabino
- Translational Research Center for Gastrointestinal Disorders (TARGID), Department Chronic Diseases, Metabolism & Ageing (CHROMETA), KU Leuven, 3000 Leuven, Belgium; (M.V.); (B.V.); (J.S.); (M.F.); (S.V.)
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, 3000 Leuven, Belgium
| | - Marc Ferrante
- Translational Research Center for Gastrointestinal Disorders (TARGID), Department Chronic Diseases, Metabolism & Ageing (CHROMETA), KU Leuven, 3000 Leuven, Belgium; (M.V.); (B.V.); (J.S.); (M.F.); (S.V.)
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, 3000 Leuven, Belgium
| | - Séverine Vermeire
- Translational Research Center for Gastrointestinal Disorders (TARGID), Department Chronic Diseases, Metabolism & Ageing (CHROMETA), KU Leuven, 3000 Leuven, Belgium; (M.V.); (B.V.); (J.S.); (M.F.); (S.V.)
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, 3000 Leuven, Belgium
| | - Isabelle Cleynen
- Laboratory of Complex Genetics, Department of Human Genetics, KU Leuven, 3000 Leuven, Belgium; (H.-S.L.); (S.V.); (T.W.)
- Correspondence: ; Tel.: +32-1637-7480
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50
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Busnelli M, Manzini S, Jablaoui A, Bruneau A, Kriaa A, Philippe C, Arnaboldi F, Colombo A, Ferrari B, Ambrogi F, Maguin E, Rhimi M, Chiesa G, Gérard P. Fat-Shaped Microbiota Affects Lipid Metabolism, Liver Steatosis, and Intestinal Homeostasis in Mice Fed a Low-Protein Diet. Mol Nutr Food Res 2020; 64:e1900835. [PMID: 32579743 DOI: 10.1002/mnfr.201900835] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 05/20/2020] [Indexed: 12/19/2022]
Abstract
SCOPE Protein malnutrition is characterized by stunted growth, hepatic steatosis and a damaged gut mucosal architecture. Since high-fat shaped gut microbiota (HFM) has an increased ability in providing nutrients and energy from food to the host, the aim of this study is to determine whether such a microbiota could beneficially impact on the consequences of malnutrition. METHODS AND RESULTS The cecal content of specific pathogen free C57Bl/6J mice fed a high-fat diet or a low-protein diet is transplanted in two groups of germ-free C57Bl/6J recipient mice, which are subsequently fed a low-protein diet for 8 weeks. Body weight gain is comparable between the two groups of microbiota-recipient mice. The HFM led to a worsening of microvesicular steatosis and a decrease of plasma lipids compared to the low-protein shaped microbiota. In the small intestine of mice receiving the HFM, although significant histological differences are not observed, the expression of antimicrobial genes promoting oxidative stress and immune response at the ileal epithelium (Duox2, Duoxa2, Saa1, Ang4, Defa5) is increased. CONCLUSION The transplant of HFM in mice fed a low-protein diet represents a noxious stimulus for the ileal mucosa and impairs hepatic lipoprotein secretion, favoring the occurrence of hepatic microvesicular steatosis.
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Affiliation(s)
- Marco Busnelli
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, 20133, Italy
| | - Stefano Manzini
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, 20133, Italy
| | - Amin Jablaoui
- Micalis Institute, Université Paris-Saclay, INRAE, AgroParisTech, Jouy-en-Josas, 78350, France
| | - Aurélia Bruneau
- Micalis Institute, Université Paris-Saclay, INRAE, AgroParisTech, Jouy-en-Josas, 78350, France
| | - Aïcha Kriaa
- Micalis Institute, Université Paris-Saclay, INRAE, AgroParisTech, Jouy-en-Josas, 78350, France
| | - Catherine Philippe
- Micalis Institute, Université Paris-Saclay, INRAE, AgroParisTech, Jouy-en-Josas, 78350, France
| | - Francesca Arnaboldi
- Department of Biomedical Sciences for Health, Università degli Studi di Milano, Milano, 20133, Italy
| | - Alice Colombo
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, 20133, Italy
| | - Benedetta Ferrari
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, 20133, Italy
| | - Federico Ambrogi
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milano, 20133, Italy
| | - Emmanuelle Maguin
- Micalis Institute, Université Paris-Saclay, INRAE, AgroParisTech, Jouy-en-Josas, 78350, France
| | - Moez Rhimi
- Micalis Institute, Université Paris-Saclay, INRAE, AgroParisTech, Jouy-en-Josas, 78350, France
| | - Giulia Chiesa
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milano, 20133, Italy
| | - Philippe Gérard
- Micalis Institute, Université Paris-Saclay, INRAE, AgroParisTech, Jouy-en-Josas, 78350, France
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