1
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Wei X, Yu S, Zhang T, Liu L, Wang X, Wang X, Chan YS, Wang Y, Meng S, Chen YG. MicroRNA-200 Loaded Lipid Nanoparticles Promote Intestinal Epithelium Regeneration in Canonical MicroRNA-Deficient Mice. ACS Nano 2023; 17:22901-22915. [PMID: 37939210 PMCID: PMC10690841 DOI: 10.1021/acsnano.3c08030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 10/26/2023] [Accepted: 10/27/2023] [Indexed: 11/10/2023]
Abstract
Intestinal epithelium undergoes regeneration after injuries, and the disruption of this process can lead to inflammatory bowel disease and tumorigenesis. Intestinal stem cells (ISCs) residing in the crypts are crucial for maintaining the intestinal epithelium's homeostasis and promoting regeneration upon injury. However, the precise role of DGCR8, a critical component in microRNA (miRNA) biogenesis, in intestinal regeneration remains poorly understood. In this study, we provide compelling evidence demonstrating the indispensable role of epithelial miRNAs in the regeneration of the intestine in mice subjected to 5-FU or irradiation-induced injury. Through a comprehensive pooled screen of miRNA function in Dgcr8-deficient organoids, we observe that the loss of the miR-200 family leads to the hyperactivation of the p53 pathway, thereby reducing ISCs and impairing epithelial regeneration. Notably, downregulation of the miR-200 family and hyperactivation of the p53 pathway are verified in colonic tissues from patients with active ulcerative colitis (UC). Most importantly, the transient supply of miR-200 through the oral delivery of lipid nanoparticles (LNPs) carrying miR-200 restores ISCs and promotes intestinal regeneration in mice following acute injury. Our study implies the miR-200/p53 pathway as a promising therapeutic target for active UC patients with diminished levels of the miR-200 family. Furthermore, our findings suggest that the clinical application of LNP-miRNAs could enhance the efficacy, safety, and acceptability of existing therapeutic modalities for intestinal diseases.
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Affiliation(s)
- Xiyang Wei
- Guangzhou
Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
- Guangzhou
National Laboratory, Guangzhou 510005, China
| | - Shicheng Yu
- Guangzhou
Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
- Guangzhou
National Laboratory, Guangzhou 510005, China
| | | | - Liansheng Liu
- Guangzhou
Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou 510530, China
- Guangzhou
National Laboratory, Guangzhou 510005, China
| | - Xu Wang
- Guangzhou
National Laboratory, Guangzhou 510005, China
| | - Xiaodan Wang
- The
State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for
Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Yun-Shen Chan
- Guangzhou
National Laboratory, Guangzhou 510005, China
| | - Yangming Wang
- Institute
of Molecular Medicine, College of Future Technology, Peking University, Beijing 100871, China
| | - Shu Meng
- Guangzhou
National Laboratory, Guangzhou 510005, China
| | - Ye-Guang Chen
- Guangzhou
National Laboratory, Guangzhou 510005, China
- The
State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for
Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
- School
of Basic Medicine, Jiangxi Medical College, Nanchang University, Nanchang 330031, China
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2
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Wang P, Kljavin N, Nguyen TTT, Storm EE, Marsh B, Jiang J, Lin W, Menon H, Piskol R, de Sauvage FJ. Adrenergic nerves regulate intestinal regeneration through IL-22 signaling from type 3 innate lymphoid cells. Cell Stem Cell 2023; 30:1166-1178.e8. [PMID: 37597516 DOI: 10.1016/j.stem.2023.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 06/23/2023] [Accepted: 07/25/2023] [Indexed: 08/21/2023]
Abstract
The intestinal epithelium has high intrinsic turnover rate, and the precise renewal of the epithelium is dependent on the microenvironment. The intestine is innervated by a dense network of peripheral nerves that controls various aspects of intestinal physiology. However, the role of neurons in regulating epithelial cell regeneration remains largely unknown. Here, we investigated the effects of gut-innervating adrenergic nerves on epithelial cell repair following irradiation (IR)-induced injury. We observed that adrenergic nerve density in the small intestine increased post IR, while chemical adrenergic denervation impaired epithelial regeneration. Single-cell RNA sequencing experiments revealed a decrease in IL-22 signaling post IR in denervated animals. Combining pharmacologic and genetic tools, we demonstrate that β-adrenergic receptor signaling drives IL-22 production from type 3 innate lymphoid cells (ILC3s) post IR, which in turn promotes epithelial regeneration. These results define an adrenergic-ILC3 axis important for intestinal regeneration.
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Affiliation(s)
- Putianqi Wang
- Molecular Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Noelyn Kljavin
- Molecular Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Thi Thu Thao Nguyen
- Oncology Bioinformatics, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Elaine E Storm
- Molecular Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Bryan Marsh
- Molecular Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Jian Jiang
- Research Pathology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - William Lin
- Research Pathology, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Hari Menon
- Microchemistry, Proteomics, Lipidomics and Next Generation Sequencing, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
| | - Robert Piskol
- Oncology Bioinformatics, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
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3
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Parham LR, Johnson NM, Lengner CJ, Hamilton KE. High autophagic vesicle content marks facultative stem cells of the gut. Autophagy 2023; 19:2611-2612. [PMID: 36722667 PMCID: PMC10392747 DOI: 10.1080/15548627.2023.2174297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/23/2023] [Accepted: 01/25/2023] [Indexed: 02/02/2023] Open
Abstract
Understanding how macroautophagy/autophagy contributes to tissue homeostasis is essential for understanding organismal health. The intestinal epithelium is an ideal model to define mechanisms that regulate tissue homeostasis because it houses well-defined populations of intestinal stem cells. Active intestinal stem cells (a-ISCs) are defined by their active cycling and self-renewal during homeostasis, which supports continual tissue turnover in vivo. In vitro, this is observed as long-term organoid formation capacity. A second population of stem cells, called "facultative intestinal stem cells" (f-ISCs), are defined by their ability to 1) survive tissue damage that depletes the injury-sensitive a-ISCs and 2) reenter the cell cycle to repopulate the a-ISC compartment and regenerate the epithelium. The prospective identification of f-ISCs has been challenging, as cells expressing markers of multiple differentiated lineages, particularly secretory lineages, appear to function as f-ISCs in diverse injury contexts. We evaluated cell age (defined as time elapsed after cell cycle exit) and autophagic state (marked by autophagic vesicle content) as molecular features that may be related to f-ISC capacity. We found that autophagic state, but not cell age, prospectively identifies f-ISCs within multiple lineages. As such, we describe autophagy as a lineage-agnostic marker of f-ISC capacity in the mammalian intestine.
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Affiliation(s)
- Louis R. Parham
- Division of Gastroenterology, Hepatology, and Nutrition, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Nicolette M. Johnson
- Medical Scientist Training Program, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Christopher J. Lengner
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Department of Cell & Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Institute for Regenerative Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Kathryn E. Hamilton
- Division of Gastroenterology, Hepatology, and Nutrition, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Institute for Regenerative Medicine, University of Pennsylvania, Philadelphia, PA, USA
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4
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Vemuri K, Radi SH, Sladek FM, Verzi MP. Multiple roles and regulatory mechanisms of the transcription factor HNF4 in the intestine. Front Endocrinol (Lausanne) 2023; 14:1232569. [PMID: 37635981 PMCID: PMC10450339 DOI: 10.3389/fendo.2023.1232569] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 07/24/2023] [Indexed: 08/29/2023] Open
Abstract
Hepatocyte nuclear factor 4-alpha (HNF4α) drives a complex array of transcriptional programs across multiple organs. Beyond its previously documented function in the liver, HNF4α has crucial roles in the kidney, intestine, and pancreas. In the intestine, a multitude of functions have been attributed to HNF4 and its accessory transcription factors, including but not limited to, intestinal maturation, differentiation, regeneration, and stem cell renewal. Functional redundancy between HNF4α and its intestine-restricted paralog HNF4γ, and co-regulation with other transcription factors drive these functions. Dysregulated expression of HNF4 results in a wide range of disease manifestations, including the development of a chronic inflammatory state in the intestine. In this review, we focus on the multiple molecular mechanisms of HNF4 in the intestine and explore translational opportunities. We aim to introduce new perspectives in understanding intestinal genetics and the complexity of gastrointestinal disorders through the lens of HNF4 transcription factors.
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Affiliation(s)
- Kiranmayi Vemuri
- Department of Genetics, Human Genetics Institute of New Jersey, Rutgers, The State University of New Jersey, Piscataway, NJ, United States
- Cancer Institute of New Jersey, Rutgers, The State University of New Jersey, New Brunswick, NJ, United States
| | - Sarah H. Radi
- Department of Molecular, Cell and Systems Biology, University of California, Riverside, Riverside, CA, United States
- Department of Biochemistry, University of California, Riverside, Riverside, CA, United States
| | - Frances M. Sladek
- Department of Molecular, Cell and Systems Biology, University of California, Riverside, Riverside, CA, United States
| | - Michael P. Verzi
- Department of Genetics, Human Genetics Institute of New Jersey, Rutgers, The State University of New Jersey, Piscataway, NJ, United States
- Cancer Institute of New Jersey, Rutgers, The State University of New Jersey, New Brunswick, NJ, United States
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5
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Tan C, Norden PR, Yu W, Liu T, Ujiie N, Lee SK, Yan X, Dyakiv Y, Aoto K, Ortega S, De Plaen IG, Sampath V, Kume T. Endothelial FOXC1 and FOXC2 promote intestinal regeneration after ischemia-reperfusion injury. EMBO Rep 2023; 24:e56030. [PMID: 37154714 PMCID: PMC10328078 DOI: 10.15252/embr.202256030] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 04/07/2023] [Accepted: 04/19/2023] [Indexed: 05/10/2023] Open
Abstract
Intestinal ischemia underlies several clinical conditions and can result in the loss of the intestinal mucosal barrier. Ischemia-induced damage to the intestinal epithelium is repaired by stimulation of intestinal stem cells (ISCs), and paracrine signaling from the vascular niche regulates intestinal regeneration. Here, we identify FOXC1 and FOXC2 as essential regulators of paracrine signaling in intestinal regeneration after ischemia-reperfusion (I/R) injury. Vascular endothelial cell (EC)- and lymphatic EC (LEC)-specific deletions of Foxc1, Foxc2, or both in mice worsen I/R-induced intestinal damage by causing defects in vascular regrowth, expression of chemokine CXCL12 and Wnt activator R-spondin 3 (RSPO3) in blood ECs (BECs) and LECs, respectively, and activation of Wnt signaling in ISCs. Both FOXC1 and FOXC2 directly bind to regulatory elements of the CXCL12 and RSPO3 loci in BECs and LECs, respectively. Treatment with CXCL12 and RSPO3 rescues the I/R-induced intestinal damage in EC- and LEC-Foxc mutant mice, respectively. This study provides evidence that FOXC1 and FOXC2 are required for intestinal regeneration by stimulating paracrine CXCL12 and Wnt signaling.
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Affiliation(s)
- Can Tan
- Department of Medicine, Feinberg Cardiovascular and Renal Research Institute, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Pieter R Norden
- Department of Medicine, Feinberg Cardiovascular and Renal Research Institute, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Wei Yu
- Division of Neonatology, Department of PediatricsChildren's Mercy HospitalKansas CityMOUSA
| | - Ting Liu
- Department of Medicine, Feinberg Cardiovascular and Renal Research Institute, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Naoto Ujiie
- Department of Medicine, Feinberg Cardiovascular and Renal Research Institute, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Sun Kyong Lee
- Department of Medicine, Feinberg Cardiovascular and Renal Research Institute, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Xiaocai Yan
- Department of Pediatrics, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Yaryna Dyakiv
- Department of Medicine, Feinberg Cardiovascular and Renal Research Institute, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Kazushi Aoto
- Department of BiochemistryHamamatsu University School of MedicineHamamatsuJapan
| | - Sagrario Ortega
- Mouse Genome Editing Unit, Biotechnology ProgramSpanish National Cancer Research CentreMadridSpain
| | - Isabelle G De Plaen
- Department of Pediatrics, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
| | - Venkatesh Sampath
- Division of Neonatology, Department of PediatricsChildren's Mercy HospitalKansas CityMOUSA
| | - Tsutomu Kume
- Department of Medicine, Feinberg Cardiovascular and Renal Research Institute, Feinberg School of MedicineNorthwestern UniversityChicagoILUSA
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6
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Moraitis I, Guiu J, Rubert J. Gut microbiota controlling radiation-induced enteritis and intestinal regeneration. Trends Endocrinol Metab 2023:S1043-2760(23)00108-X. [PMID: 37336645 DOI: 10.1016/j.tem.2023.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 05/22/2023] [Accepted: 05/22/2023] [Indexed: 06/21/2023]
Abstract
Cancer remains the second leading cause of mortality, with nearly 10 million deaths worldwide in 2020. In many cases, radiotherapy is used for its anticancer effects. However, radiation causes healthy tissue toxicity as a side effect. In intra-abdominal and pelvic malignancies, the healthy bowel is inevitably included in the radiation field, causing radiation-induced enteritis and dramatically affecting the gut microbiome. This condition is associated with significant morbidity and mortality that impairs cancer patients' and survivors' quality of life. This Review provides a critical overview of the main drivers in modulating the gut microenvironment in homeostasis, disease, and injury, focusing on gut microbial metabolites and microorganisms that influence epithelial regeneration upon radiation injury.
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Affiliation(s)
- Ilias Moraitis
- Cell Plasticity and Regeneration Group, Regenerative Medicine Program, Institut d'Investigació Biomèdica de Bellvitge-IDIBELL, L'Hospitalet de Llobregat, Spain; Program for advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], L'Hospitalet de Llobregat, Spain
| | - Jordi Guiu
- Cell Plasticity and Regeneration Group, Regenerative Medicine Program, Institut d'Investigació Biomèdica de Bellvitge-IDIBELL, L'Hospitalet de Llobregat, Spain; Program for advancing the Clinical Translation of Regenerative Medicine of Catalonia, P-CMR[C], L'Hospitalet de Llobregat, Spain.
| | - Josep Rubert
- Division of Human Nutrition and Health, Wageningen University & Research, Stippeneng 4, Wageningen, 6708, WE, Netherlands; Food Quality and Design, Wageningen University & Research, Bornse Weilanden 9, Wageningen, 6708, WG, Netherlands.
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7
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Kobayashi E. A new stage of experimental surgery for organoid based intestinal regeneration - A review of organoid research and recent advance. Magy Seb 2022; 75:261-264. [PMID: 36515914 DOI: 10.1556/1046.2022.40002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 09/26/2022] [Indexed: 12/15/2022]
Abstract
Small intestinal transplantation has emerged as an essential treatment for intestinal failure, but its relatively high graft rejection rate and mortality rate when compared to those of other transplanted organs has led to difficulties in post-transplantation treatment management. The recently-developed technique of creating organoids from somatic stem cells has created a challenging opportunity to develop a treatment that involves the creation of a substitute small intestine using autologous cells instead of transplanting another individual's small intestines. The remaining partial large intestine is then used as a segmental graft, and autologous small intestinal organoid transplantation is conducted on its epithelium in order to create a pedunculated hybrid graft. This is a new surgical technique for interposing with the original ileocecal region. The hybrid large intestine acquires both the lymphatic vessels that are involved in nutrient absorption and the original peristaltic function of the large intestine.This lecture touches upon the history of the development of organoid medicine, after which an introduction is provided of the revolutionary surgical technique in which a functional small intestine is created by regenerating autologous cells.The content here was introduced in a special lecture (online) at the 29th Congress of the Experimental Surgical Session of the Hungarian Surgical Society (Host: Dr. Norbert Nemeth, 9/9/2022, Budapest).
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Affiliation(s)
- Eiji Kobayashi
- Department of Kidney Regenerative Medicine, Industry-Academia Collaborative Department, The Jikei University School of Medicine, Tokyo, Japan
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8
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Neophytou C, Pitsouli C. Biotin controls intestinal stem cell mitosis and host-microbiome interactions. Cell Rep 2022; 38:110505. [PMID: 35263602 DOI: 10.1016/j.celrep.2022.110505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 12/11/2021] [Accepted: 02/16/2022] [Indexed: 12/12/2022] Open
Abstract
Diet is a key regulator of metabolism and interacts with the intestinal microbiome. Here, we study the role of the Drosophila intestinal stem cell (ISC)-specific biotin transporter Smvt in midgut homeostasis, infection-induced regeneration, and tumorigenesis. We show that Smvt-transported biotin in ISCs is necessary for ISC mitosis. Smvt deficiency impairs intestinal maintenance, which can be rescued by the human Smvt, encoded by SLC5A6. ISC-specific, Smvt-silenced flies exhibit microbial dysbiosis, whereby the growth of Providencia sneebia, an opportunistic pathogen, is favored. Dysbiosis correlates with increased Nox expression, reactive oxygen species (ROS), and enterocyte apoptosis. Flies acquire biotin from their diet and microbiota. We show that, when dietary biotin is scarce, biotin-producing commensals, e.g., E. coli, can rescue reduced ISC mitosis. Smvt and commensals also control intestinal tumor growth. Our findings suggest that direct modification of the gut microbiome by biotin can serve as an approach for the treatment of dysbiosis-promoted diseases and tumorigenesis control.
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Affiliation(s)
- Constantina Neophytou
- Department of Biological Sciences, University of Cyprus, 1 University Avenue, Aglantzia 2109, Cyprus
| | - Chrysoula Pitsouli
- Department of Biological Sciences, University of Cyprus, 1 University Avenue, Aglantzia 2109, Cyprus.
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9
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Eggington HR, Mulholland EJ, Leedham SJ. Morphogen regulation of stem cell plasticity in intestinal regeneration and carcinogenesis. Dev Dyn 2022; 251:61-74. [PMID: 34716737 DOI: 10.1002/dvdy.434] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 10/01/2021] [Accepted: 10/01/2021] [Indexed: 01/20/2023] Open
Abstract
The intestinal epithelium is a tissue with high cell turnover, supported by adult intestinal stem cells. Intestinal homeostasis is underpinned by crypt basal columnar stem cells, marked by expression of the LGR5 gene. However, recent research has demonstrated considerable stem cell plasticity following injury, with dedifferentiation of a range of other intestinal cell populations, induced by a permissive microenvironment in the regenerating mucosa. The regulation of this profound adaptive cell reprogramming response is the subject of current research. There is a demonstrable contribution from disruption of key homeostatic signaling pathways such as wingless-related integration site and bone morphogenetic protein, and an emerging signaling hub role for the mechanoreceptor transducers Yes-associated protein 1/transcriptional coactivator with PDZ-binding motif, negatively regulated by the Hippo pathway. However, a number of outstanding questions remain, including a need to understand how tissues sense damage, and how pathways intersect to mediate dynamic changes in the stem cell population. Better understanding of these pathways, associated functional redundancies, and how they may be both enhanced for recovery of inflammatory diseases, and co-opted in neoplasia development, may have significant clinical implications, and could lead to development of more targeted molecular therapies which target individual stem or stem-like cell populations.
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Affiliation(s)
- Holly R Eggington
- Intestinal Stem Cell Biology Lab, Wellcome Centre Human Genetics, University of Oxford, Oxford, UK
| | - Eoghan J Mulholland
- Intestinal Stem Cell Biology Lab, Wellcome Centre Human Genetics, University of Oxford, Oxford, UK
| | - Simon J Leedham
- Intestinal Stem Cell Biology Lab, Wellcome Centre Human Genetics, University of Oxford, Oxford, UK.,Translational Gastroenterology Unit, John Radcliffe Hospital, University of Oxford and Oxford National Institute for Health Research Biomedical Research Centre, Oxford, UK
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10
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Nászai M, Bellec K, Yu Y, Román-Fernández A, Sandilands E, Johansson J, Campbell AD, Norman JC, Sansom OJ, Bryant DM, Cordero JB. RAL GTPases mediate EGFR-driven intestinal stem cell proliferation and tumourigenesis. eLife 2021; 10:e63807. [PMID: 34096503 PMCID: PMC8216719 DOI: 10.7554/elife.63807] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 06/03/2021] [Indexed: 02/07/2023] Open
Abstract
RAS-like (RAL) GTPases function in Wnt signalling-dependent intestinal stem cell proliferation and regeneration. Whether RAL proteins work as canonical RAS effectors in the intestine and the mechanisms of how they contribute to tumourigenesis remain unclear. Here, we show that RAL GTPases are necessary and sufficient to activate EGFR/MAPK signalling in the intestine, via induction of EGFR internalisation. Knocking down Drosophila RalA from intestinal stem and progenitor cells leads to increased levels of plasma membrane-associated EGFR and decreased MAPK pathway activation. Importantly, in addition to influencing stem cell proliferation during damage-induced intestinal regeneration, this role of RAL GTPases impacts on EGFR-dependent tumourigenic growth in the intestine and in human mammary epithelium. However, the effect of oncogenic RAS in the intestine is independent from RAL function. Altogether, our results reveal previously unrecognised cellular and molecular contexts where RAL GTPases become essential mediators of adult tissue homeostasis and malignant transformation.
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MESH Headings
- Animals
- Animals, Genetically Modified
- Breast Neoplasms/enzymology
- Breast Neoplasms/genetics
- Breast Neoplasms/pathology
- Cell Line, Tumor
- Cell Proliferation
- Cell Transformation, Neoplastic/genetics
- Cell Transformation, Neoplastic/metabolism
- Cell Transformation, Neoplastic/pathology
- Drosophila Proteins/genetics
- Drosophila Proteins/metabolism
- Drosophila melanogaster/enzymology
- Drosophila melanogaster/genetics
- Endocytosis
- ErbB Receptors/genetics
- ErbB Receptors/metabolism
- Female
- Humans
- Hyperplasia
- Intestinal Mucosa/metabolism
- Intestinal Mucosa/pathology
- Lung Neoplasms/enzymology
- Lung Neoplasms/genetics
- Lung Neoplasms/pathology
- Mammary Glands, Human/enzymology
- Mammary Glands, Human/pathology
- Mice, Inbred C57BL
- Mitogen-Activated Protein Kinases/metabolism
- Monomeric GTP-Binding Proteins/genetics
- Monomeric GTP-Binding Proteins/metabolism
- Receptors, Invertebrate Peptide/genetics
- Receptors, Invertebrate Peptide/metabolism
- Signal Transduction
- Stem Cells/metabolism
- Stem Cells/pathology
- ral GTP-Binding Proteins/genetics
- ral GTP-Binding Proteins/metabolism
- Mice
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Affiliation(s)
- Máté Nászai
- Wolfson Wohl Cancer Research CentreGlasgowUnited Kingdom
- Institute of Cancer Sciences, University of GlasgowGlasgowUnited Kingdom
| | - Karen Bellec
- Wolfson Wohl Cancer Research CentreGlasgowUnited Kingdom
- Institute of Cancer Sciences, University of GlasgowGlasgowUnited Kingdom
| | - Yachuan Yu
- Wolfson Wohl Cancer Research CentreGlasgowUnited Kingdom
- Institute of Cancer Sciences, University of GlasgowGlasgowUnited Kingdom
- Cancer Research UK Beatson InstituteGlasgowUnited Kingdom
| | - Alvaro Román-Fernández
- Institute of Cancer Sciences, University of GlasgowGlasgowUnited Kingdom
- Cancer Research UK Beatson InstituteGlasgowUnited Kingdom
| | - Emma Sandilands
- Institute of Cancer Sciences, University of GlasgowGlasgowUnited Kingdom
- Cancer Research UK Beatson InstituteGlasgowUnited Kingdom
| | - Joel Johansson
- Cancer Research UK Beatson InstituteGlasgowUnited Kingdom
| | | | - Jim C Norman
- Institute of Cancer Sciences, University of GlasgowGlasgowUnited Kingdom
- Cancer Research UK Beatson InstituteGlasgowUnited Kingdom
| | - Owen J Sansom
- Institute of Cancer Sciences, University of GlasgowGlasgowUnited Kingdom
- Cancer Research UK Beatson InstituteGlasgowUnited Kingdom
| | - David M Bryant
- Institute of Cancer Sciences, University of GlasgowGlasgowUnited Kingdom
- Cancer Research UK Beatson InstituteGlasgowUnited Kingdom
| | - Julia B Cordero
- Wolfson Wohl Cancer Research CentreGlasgowUnited Kingdom
- Institute of Cancer Sciences, University of GlasgowGlasgowUnited Kingdom
- Cancer Research UK Beatson InstituteGlasgowUnited Kingdom
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11
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Abstract
Intestinal epithelium functions as a barrier to protect the host from environmental microbes. Defects in macroautophagy/autophagy combined with intestinal microbes cause a disruption of homeostasis of the tissue, which is associated with the etiology of Crohn disease, an inflammatory bowel disease. However, the molecular mechanism of how autophagy interacts with microbes in the pathology are mostly unrevealed. Our recent findings using Drosophila as a model system showed that autophagy in enterocytes suppresses a regenerative response triggered by reactive oxygen species (ROS) secreted by the host epithelia toward commensal bacteria in the intestine. Without this suppression, accumulation of a receptor protein of selective autophagy, ref(2)P, continuously acts as a signaling platform to cause excessive regeneration via cytokine production by yki (yorkie) activation. This chronic response leads to the acceleration of age-dependent barrier dysfunction, systemic inflammation, and shorter lifespan. These results uncover a novel regulatory network linking commensal bacteria, autophagy, and gut homeostasis, represented by ROS, ref(2)P, and the hippo pathway.
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Affiliation(s)
- Hiroki Nagai
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Tamaki Yano
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
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12
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Díaz-Díaz LM, Rosario-Meléndez N, Rodríguez-Villafañe A, Figueroa-Vega YY, Pérez-Villafañe OA, Colón-Cruz AM, Rodríguez-Sánchez PI, Cuevas-Cruz JM, Malavez-Cajigas SJ, Maldonado-Chaar SM, García-Arrarás JE. Antibiotics Modulate Intestinal Regeneration. Biology (Basel) 2021; 10:236. [PMID: 33808600 DOI: 10.3390/biology10030236] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/09/2021] [Accepted: 03/17/2021] [Indexed: 02/02/2023]
Abstract
Simple Summary The impact of the microbial community on host’s biological functions has uncovered the potential outcomes of antibiotics on host physiology, introducing the caveats of the antibiotic usage. Within animals, the digestive function is closely related to the microorganisms that inhabit this organ. The proper maintenance of the digestive system requires constant regeneration. These processes vary from self-renewal of some cells or tissues in some species to the complete regeneration of the organ in others. Whether antibiotics influence digestive organ regeneration remains unknown. We employ the sea cucumber, Holothuria glaberrima, for its capacity to regenerate the whole intestine after ejection from its internal cavity. We explored the antibiotics’ effects on several intestinal regeneration processes. In parallel, we studied the effect of antibiotics on the animals’ survival, toxicity, and gut bacteria growth. Our results show that tested antibiotics perturbed key cellular processes that occur during intestinal regeneration. Moreover, this happens at doses that inhibited bacteria growth but did not alter holothurian’s metabolic activity. We propose that antibiotics can perturb the cellular events of intestinal regeneration via their impact on the microbiota. These results highlight H. glaberrima as a promising model to study the importance of the microbiota during organ regeneration. Abstract The increased antibiotics usage in biomedical and agricultural settings has been well documented. Antibiotics have now been shown to exert effects outside their purposive use, including effects on physiological and developmental processes. We explored the effect of various antibiotics on intestinal regeneration in the sea cucumber Holothuria glaberrima. For this, holothurians were eviscerated and left to regenerate for 10 days in seawater with different penicillin/streptomycin-based cocktails (100 µg/mL PS) including: 100 µg/mL kanamycin (KPS), 5 µg/mL vancomycin (VPS), and 4 µg/mL (E4PS) or 20 µg/mL (E20PS) erythromycin. Immunohistological and histochemical analyses were performed to analyze regenerative processes, including rudiment size, extracellular matrix (ECM) remodeling, cell proliferation, and muscle dedifferentiation. A reduction in muscle dedifferentiation was observed in all antibiotic-treated animals. ECM remodeling was decreased by VPS, E4PS, and E20PS treatments. In addition, organisms subjected to E20PS displayed a significant reduction in the size of their regenerating rudiments while VPS exposure altered cell proliferation. MTT assays were used to discard the possibility that the antibiotics directly affect holothurian metabolic activity while bacterial cultures were used to test antibiotic effects on holothurian enteric microbiota. Our results demonstrate a negative effect on intestinal regeneration and strongly suggest that these effects are due to alterations in the microbial community.
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13
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Xu J, Tang Y, Sheng X, Tian Y, Deng M, Du S, Lv C, Li G, Pan Y, Song Y, Lou P, Luo Y, Li Y, Zhang B, Chen Y, Liu Z, Cong Y, Plikus MV, Meng Q, Zhou Z, Yu Z. Secreted stromal protein ISLR promotes intestinal regeneration by suppressing epithelial Hippo signaling. EMBO J 2020; 39:e103255. [PMID: 32128839 DOI: 10.15252/embj.2019103255] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Revised: 02/05/2020] [Accepted: 02/11/2020] [Indexed: 12/19/2022] Open
Abstract
The Hippo-YAP signaling pathway plays an essential role in epithelial cells during intestinal regeneration and tumorigenesis. However, the molecular mechanism linking stromal signals to YAP-mediated intestinal regeneration and tumorigenesis is poorly defined. Here, we report a stroma-epithelium ISLR-YAP signaling axis essential for stromal cells to modulate epithelial cell growth during intestinal regeneration and tumorigenesis. Specifically, upon inflammation and in cancer, an oncogenic transcription factor ETS1 in stromal cells induces expression of a secreted protein ISLR that can inhibit Hippo signaling and activate YAP in epithelial cells. Deletion of Islr in stromal cells in mice markedly impaired intestinal regeneration and suppressed tumorigenesis in the colon. Moreover, the expression of stromal cell-specific ISLR and ETS1 significantly increased in inflamed mucosa of human IBD patients and in human colorectal adenocarcinoma, accounting for the epithelial YAP hyperactivation. Collectively, our findings provide new insights into the signaling crosstalk between stroma and epithelium during tissue regeneration and tumorigenesis.
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Affiliation(s)
- Jiuzhi Xu
- State Key Laboratories for Agrobiotechnology and Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Sciences, China Agricultural University, Beijing, China.,Guangdong Provincial Key Laboratory of Regional Immunity and School of Medicine, Shenzhen University, Shenzhen, China
| | - Yang Tang
- State Key Laboratories of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.,Postdoctoral Station of Clinical Medicine, Shanghai Tenth Peoples Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaole Sheng
- State Key Laboratories for Agrobiotechnology and Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Yuhua Tian
- State Key Laboratories for Agrobiotechnology and Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Min Deng
- State Key Laboratories for Agrobiotechnology and Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Sujuan Du
- State Key Laboratories for Agrobiotechnology and Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Cong Lv
- State Key Laboratories for Agrobiotechnology and Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Sciences, China Agricultural University, Beijing, China.,Guangdong Provincial Key Laboratory of Regional Immunity and School of Medicine, Shenzhen University, Shenzhen, China
| | - Guili Li
- State Key Laboratories for Agrobiotechnology and Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Yuwei Pan
- State Key Laboratories for Agrobiotechnology and Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Yongli Song
- State Key Laboratories for Agrobiotechnology and Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Pengbo Lou
- State Key Laboratories for Agrobiotechnology and Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Yongting Luo
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Yuan Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Bing Zhang
- College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yanmei Chen
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Zhanju Liu
- Department of Gastroenterology, The Shanghai Tenth People's Hospital, Tongji University, Shanghai, China
| | - Yingzi Cong
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, USA
| | - Maksim V Plikus
- Department of Developmental and Cell Biology, Sue and Bill Gross Stem Cell Research center, Center for Complex Biological Systems, University of California, Irvine, Irvine, CA, USA
| | - Qingyong Meng
- State Key Laboratories for Agrobiotechnology and Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Zhaocai Zhou
- State Key Laboratories of Cell Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.,Department of Medical Ultrasound, Shanghai Tenth People's Hospital, Ultrasound Research and Education Institute, Tongji University School of Medicine, Shanghai, China
| | - Zhengquan Yu
- State Key Laboratories for Agrobiotechnology and Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Sciences, China Agricultural University, Beijing, China
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14
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Nagai H, Kurata S, Yano T. Immunoglobulin superfamily beat-Ib mediates intestinal regeneration induced by reactive oxygen species in Drosophila. Genes Cells 2020; 25:343-349. [PMID: 32080940 DOI: 10.1111/gtc.12762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 02/17/2020] [Indexed: 11/30/2022]
Abstract
Reactive oxygen species (ROS) often injure intestinal epithelia that cause loss of damaged cells, which is mainly repaired by proliferation of intestinal stem cells (ISCs). To maintain the homeostatic state, coordination of sensing of the ROS injury and the subsequent epithelial cell loss with the replenishment by cell renewal is crucial. However, little is known about how gut epithelial cells initiate regenerative responses against ROS to maintain the tissue integrity. Here, we carried out a genome-wide screen, by which we identify immunoglobulin superfamily beaten path Ib (beat-Ib) as an essential gene for provoking ISC proliferation against ROS in Drosophila intestine. Interestingly, the beat-Ib function is required in differentiated enterocytes, the main targeted cells by ROS in the intestinal tract, but is dispensable in the stem cells. Moreover, beat-Ib is not involved in enterocyte apoptosis at ROS injury. These findings indicate the essential role of beat-Ib in Drosophila midgut enterocytes for initiating the non-cell-autonomous induction of ISC division in response to environmental ROS stresses.
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Affiliation(s)
- Hiroki Nagai
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Shoichiro Kurata
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Tamaki Yano
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
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15
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Romesser PB, Kim AS, Jeong J, Mayle A, Dow LE, Lowe SW. Preclinical murine platform to evaluate therapeutic countermeasures against radiation-induced gastrointestinal syndrome. Proc Natl Acad Sci U S A 2019; 116:20672-8. [PMID: 31551264 DOI: 10.1073/pnas.1906611116] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Currently, there are no therapies available to mitigate intestinal damage after radiation injury. Efforts to study and design new therapies are hampered by a lack of models that can be readily adopted to study therapeutic targets. Here we describe a preclinical platform to evaluate therapeutic countermeasures against intestinal radiation injury in vivo in a mouse model that permits inducible and reversible gene suppression following radiation exposure. We demonstrate that transient intestinal Apc suppression stimulates intestinal regeneration and mitigates lethality after radiation intestinal injury, thus validating pulsed Wnt pathway agonism as a therapeutic strategy. This platform can be readily adopted to study theoretically any gene of interest associated with the biology and treatment of intestinal radiation injury. Radiation-induced gastrointestinal syndrome (RIGS) is a limiting factor for therapeutic abdominopelvic radiation and is predicted to be a major source of morbidity in the event of a nuclear accident or radiological terrorism. In this study, we developed an in vivo mouse-modeling platform that enables spatial and temporal manipulation of potential RIGS targets in mice following whole-abdomen irradiation without the confounding effects of concomitant hematopoietic syndrome that occur following whole-body irradiation. We then tested the utility of this platform to explore the effects of transient Wnt pathway activation on intestinal regeneration and animal recovery following induction of RIGS. Our results demonstrate that intestinal epithelial suppression of adenomatous polyposis coli (Apc) mitigates RIGS lethality in vivo after lethal ionizing radiation injury-induced intestinal epithelial damage. These results highlight the potential of short-term Wnt agonism as a therapeutic target and establish a platform to evaluate other strategies to stimulate intestinal regeneration after ionizing radiation damage.
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16
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Li N, Lu N, Xie C. The Hippo and Wnt signalling pathways: crosstalk during neoplastic progression in gastrointestinal tissue. FEBS J 2019; 286:3745-3756. [PMID: 31342636 DOI: 10.1111/febs.15017] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 06/24/2019] [Accepted: 07/22/2019] [Indexed: 12/24/2022]
Abstract
The Hippo and Wnt signalling pathways play crucial roles in maintaining tissue homeostasis and organ size by orchestrating cell proliferation, differentiation and apoptosis. These pathways have been frequently found to be dysregulated in human cancers. While the canonical signal transduction of Hippo and Wnt has been well studied, emerging evidence shows that these two signalling pathways contribute to and exhibit overlapping functions in gastrointestinal (GI) tumorigenesis. In fact, the core effectors YAP/TAZ in Hippo signalling pathway cooperate with β-catenin in Wnt signalling pathway to promote GI neoplasia. Here, we provide a brief review to summarize the molecular mechanisms underlying the crosstalk between these two pathways and elucidate their involvement in GI tumorigenesis, particularly focusing on the intestine, stomach and liver.
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Affiliation(s)
- Nianshuang Li
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, China
| | - Nonghua Lu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, China
| | - Chuan Xie
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, China
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17
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Yuan J, Gao Y, Sun L, Jin S, Zhang X, Liu C, Li F, Xiang J. Wnt Signaling Pathway Linked to Intestinal Regeneration via Evolutionary Patterns and Gene Expression in the Sea Cucumber Apostichopus japonicus. Front Genet 2019; 10:112. [PMID: 30838034 PMCID: PMC6390002 DOI: 10.3389/fgene.2019.00112] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 01/30/2019] [Indexed: 12/17/2022] Open
Abstract
Many echinoderms are regenerative species that exhibit exceptional regenerative capacity, and sea cucumber is a representative organism that could regenerate the whole intestine after evisceration. There are many signaling pathways participate in the regeneration process, but it is not clear which is essential for the intestinal regeneration. In this study, we performed genome-wide comprehensive analyses on these regeneration-related signaling pathways, and found the Wnt signaling pathway was one of the most conservative pathways among regenerative species. Additionally, among these signaling pathways, we found that the Wnt signaling pathway was the only one under positive selection in regenerative echinoderms, and the only one enriched by differentially expressed genes during the intestinal regeneration. Thus, it suggests both coding sequence and gene expression of the Wnt signaling pathway have been shaped by natural selection to provide the genetic architecture for intestinal regeneration. Wnt7, Fz7, and Dvl are the three positively selected genes and also happen to be three upstream genes in the Wnt signaling pathway. They are all significantly upregulated at the early stages of regeneration, which may contribute significantly to the early activation of Wnt signaling and the initiation of intestinal regeneration. Expression knockdown of Wnt7 and Dvl by RNA interference significantly inhibit intestinal extension, implying that they are essential for intestinal regeneration. As an important regeneration-related gene, the downstream gene c-Myc is also conserved and highly expressed during the whole regeneration stages, which may make the Wnt/c-Myc signaling to be an important way to promote intestinal regeneration. Therefore, it is reasonable to conclude that the Wnt signaling pathway is the chosen one to play an important role in intestinal regeneration of sea cucumbers, or even in the regeneration of other echinoderms.
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Affiliation(s)
- Jianbo Yuan
- CAS Key Laboratory of Experimental Marine Biology and CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology and Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Yi Gao
- CAS Key Laboratory of Experimental Marine Biology and CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology and Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Lina Sun
- CAS Key Laboratory of Experimental Marine Biology and CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology and Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Songjun Jin
- CAS Key Laboratory of Experimental Marine Biology and CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology and Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Xiaojun Zhang
- CAS Key Laboratory of Experimental Marine Biology and CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology and Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Chengzhang Liu
- CAS Key Laboratory of Experimental Marine Biology and CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology and Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Fuhua Li
- CAS Key Laboratory of Experimental Marine Biology and CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology and Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Jianhai Xiang
- CAS Key Laboratory of Experimental Marine Biology and CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,Laboratory for Marine Biology and Biotechnology and Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
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18
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Yang Z, Li Q, Wang X, Jiang X, Zhao D, Lin X, He F, Tang L. C-type lectin receptor LSECtin-mediated apoptotic cell clearance by macrophages directs intestinal repair in experimental colitis. Proc Natl Acad Sci U S A 2018; 115:11054-9. [PMID: 30301800 DOI: 10.1073/pnas.1804094115] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Epithelial barrier disruption is a major cause of inflammatory bowel disease (IBD); however, the cellular and molecular regulation of intestinal epithelial homeostasis remains largely undefined. Here, we show that the C-type lectin receptor LSECtin (Clec4g) on macrophages is required for protection against dextran sulfate sodium-induced colitis. Mechanistically, LSECtin promotes apoptotic cell clearance by macrophages and induces the production of antiinflammatory/tissue repair factors in an engulfment-dependent manner, which in turn stimulates epithelial cell proliferation. Deletion of LSECtin results in defective engulfment by colon macrophages, leading to aberrant proresolving factor production and impaired intestinal epithelium repair. Collectively, our findings suggest that LSECtin-dependent corpse clearance by macrophages can direct intestinal regeneration and maintenance of the mucosal barrier after injury.
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19
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Suh HN, Kim MJ, Jung YS, Lien EM, Jun S, Park JI. Quiescence Exit of Tert + Stem Cells by Wnt/β-Catenin Is Indispensable for Intestinal Regeneration. Cell Rep 2018; 21:2571-2584. [PMID: 29186692 DOI: 10.1016/j.celrep.2017.10.118] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 10/03/2017] [Accepted: 10/29/2017] [Indexed: 01/08/2023] Open
Abstract
Fine control of stem cell maintenance and activation is crucial for tissue homeostasis and regeneration. However, the mechanism of quiescence exit of Tert+ intestinal stem cells (ISCs) remains unknown. Employing a Tert knockin (TertTCE/+) mouse model, we found that Tert+ cells are long-term label-retaining self-renewing cells, which are partially distinguished from the previously identified +4 ISCs. Tert+ cells become mitotic upon irradiation (IR) injury. Conditional ablation of Tert+ cells impairs IR-induced intestinal regeneration but not intestinal homeostasis. Upon IR injury, Wnt signaling is specifically activated in Tert+ cells via the ROS-HIFs-transactivated Wnt2b signaling axis. Importantly, conditional knockout of β-catenin/Ctnnb1 in Tert+ cells undermines IR-induced quiescence exit of Tert+ cells, which subsequently impedes intestinal regeneration. Our results that Wnt-signaling-induced activation of Tert+ ISCs is indispensable for intestinal regeneration unveil the underlying mechanism for how Tert+ stem cells undergo quiescence exit upon tissue injury.
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Affiliation(s)
- Han Na Suh
- Department of Experimental Radiation Oncology, Division of Radiation Oncology, The University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Moon Jong Kim
- Department of Experimental Radiation Oncology, Division of Radiation Oncology, The University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Youn-Sang Jung
- Department of Experimental Radiation Oncology, Division of Radiation Oncology, The University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Esther M Lien
- Department of Experimental Radiation Oncology, Division of Radiation Oncology, The University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Sohee Jun
- Department of Experimental Radiation Oncology, Division of Radiation Oncology, The University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jae-Il Park
- Department of Experimental Radiation Oncology, Division of Radiation Oncology, The University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA; Graduate School of Biomedical Sciences, The University of Texas, MD Anderson Cancer Center, Houston, TX 77030, USA; Program in Genes and Development, The University of Texas MD, Anderson Cancer Center, Houston, TX 77030, USA.
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20
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Kim MJ, Xia B, Suh HN, Lee SH, Jun S, Lien EM, Zhang J, Chen K, Park JI. PAF-Myc-Controlled Cell Stemness Is Required for Intestinal Regeneration and Tumorigenesis. Dev Cell 2018. [PMID: 29533773 DOI: 10.1016/j.devcel.2018.02.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The underlying mechanisms of how self-renewing cells are controlled in regenerating tissues and cancer remain ambiguous. PCNA-associated factor (PAF) modulates DNA repair via PCNA. Also, PAF hyperactivates Wnt/β-catenin signaling independently of PCNA interaction. We found that PAF is expressed in intestinal stem and progenitor cells (ISCs and IPCs) and markedly upregulated during intestinal regeneration and tumorigenesis. Whereas PAF is dispensable for intestinal homeostasis, upon radiation injury, genetic ablation of PAF impairs intestinal regeneration along with the severe loss of ISCs and Myc expression. Mechanistically, PAF conditionally occupies and transactivates the c-Myc promoter, which induces the expansion of ISCs/IPCs during intestinal regeneration. In mouse models, PAF knockout inhibits Apc inactivation-driven intestinal tumorigenesis with reduced tumor cell stemness and suppressed Wnt/β-catenin signaling activity, supported by transcriptome profiling. Collectively, our results unveil that the PAF-Myc signaling axis is indispensable for intestinal regeneration and tumorigenesis by positively regulating self-renewing cells.
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Affiliation(s)
- Moon Jong Kim
- Department of Experimental Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Bo Xia
- Center for Cardiovascular Regeneration, Houston Methodist Hospital Research Institute, Houston, TX, USA; Department of Cardiothoracic Surgery, Weill Cornell Medical College, Cornell University, New York, NY, USA
| | - Han Na Suh
- Department of Experimental Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Sung Ho Lee
- Department of Experimental Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Sohee Jun
- Department of Experimental Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Esther M Lien
- Department of Experimental Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jie Zhang
- Department of Experimental Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Kaifu Chen
- Center for Cardiovascular Regeneration, Houston Methodist Hospital Research Institute, Houston, TX, USA; Department of Cardiothoracic Surgery, Weill Cornell Medical College, Cornell University, New York, NY, USA
| | - Jae-Il Park
- Department of Experimental Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Graduate School of Biomedical Sciences, University of Texas MD Anderson Cancer Center and Health Science Center, Houston, TX 77030, USA; Program in Genetics and Epigenetics, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
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21
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Yamamoto S, Nakase H, Matsuura M, Honzawa Y, Matsumura K, Uza N, Yamaguchi Y, Mizoguchi E, Chiba T. Heparan sulfate on intestinal epithelial cells plays a critical role in intestinal crypt homeostasis via Wnt/β-catenin signaling. Am J Physiol Gastrointest Liver Physiol 2013; 305:G241-9. [PMID: 23744737 PMCID: PMC3742857 DOI: 10.1152/ajpgi.00480.2012] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Heparan sulfate (HS), a constituent of HS proteoglycans (HSPGs), is a linear polysaccharide present on the cell surface. HSPGs modulate functions of several growth factors and signaling molecules. We examined whether small intestinal epithelial HS plays some roles in crypt homeostasis using intestinal epithelium cell (IEC)-specific HS-deficient C57Bl/6 mice. Survival rate after total body irradiation was significantly reduced in HS-deficient mice due to profound intestinal injury. HS-deficient IECs exhibited Wnt/β-catenin pathway disruption, decreased levels of β-catenin nuclear localization, and reduced expression of Wnt target genes, including Lgr5 during crypt regeneration. Moreover, epithelial HS increased Wnt binding affinity of IECs, promoted phosphorylation of Wnt coreceptor LRP6, and enhanced Wnt/β-catenin signaling following ex vivo stimulation with Wnt3a, whereas activation of canonical Wnt signaling following direct inhibition of glycogen synthase kinase-3β by lithium chloride was similar between HS-deficient and wild-type mice. Thus HS influences the binding affinity of IECs to Wnt, thereby promoting activation of canonical Wnt signaling and facilitating regeneration of small intestinal crypts after epithelial injury.
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Affiliation(s)
- Shuji Yamamoto
- 1Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto; ,2Japan Society for the Promotion of Science, Tokyo, Japan;
| | - Hiroshi Nakase
- 1Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto;
| | - Minoru Matsuura
- 1Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto;
| | - Yusuke Honzawa
- 1Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto;
| | - Kayoko Matsumura
- 1Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto;
| | - Norimitsu Uza
- 1Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto;
| | - Yu Yamaguchi
- 3Sanford Children's Health Research Center, Sanford-Burnham Medical Research Institute, La Jolla, California;
| | - Emiko Mizoguchi
- 4Gastrointestinal Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Tsutomu Chiba
- 1Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto;
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