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Greenspan LJ, de Cuevas M, Le KH, Viveiros JM, Matunis EL. Activation of the EGFR/MAPK pathway drives transdifferentiation of quiescent niche cells to stem cells in the Drosophila testis niche. eLife 2022; 11:e70810. [PMID: 35468055 PMCID: PMC9038189 DOI: 10.7554/elife.70810] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 03/31/2022] [Indexed: 12/28/2022] Open
Abstract
Adult stem cells are maintained in niches, specialized microenvironments that regulate their self-renewal and differentiation. In the adult Drosophila testis stem cell niche, somatic hub cells produce signals that regulate adjacent germline stem cells (GSCs) and somatic cyst stem cells (CySCs). Hub cells are normally quiescent, but after complete genetic ablation of CySCs, they can proliferate and transdifferentiate into new CySCs. Here we find that Epidermal growth factor receptor (EGFR) signaling is upregulated in hub cells after CySC ablation and that the ability of testes to recover from ablation is inhibited by reduced EGFR signaling. In addition, activation of the EGFR pathway in hub cells is sufficient to induce their proliferation and transdifferentiation into CySCs. We propose that EGFR signaling, which is normally required in adult cyst cells, is actively inhibited in adult hub cells to maintain their fate but is repurposed to drive stem cell regeneration after CySC ablation.
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Affiliation(s)
- Leah J Greenspan
- Department of Cell Biology, Johns Hopkins University School of MedicineBaltimoreUnited States
- Division of Developmental Biology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of HealthBethesdaUnited States
| | - Margaret de Cuevas
- Department of Cell Biology, Johns Hopkins University School of MedicineBaltimoreUnited States
| | - Kathy H Le
- Department of Cell Biology, Johns Hopkins University School of MedicineBaltimoreUnited States
- Graduate Program in Biophysics, Stanford UniversityStanfordUnited States
| | - Jennifer M Viveiros
- Department of Cell Biology, Johns Hopkins University School of MedicineBaltimoreUnited States
| | - Erika L Matunis
- Department of Cell Biology, Johns Hopkins University School of MedicineBaltimoreUnited States
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52
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Kellett MP, Jatko JT, Darling CL, Ventrello SW, Bain LJ. Arsenic Exposure Impairs Intestinal Stromal Cells. Toxicol Lett 2022; 361:54-63. [PMID: 35378173 PMCID: PMC9038714 DOI: 10.1016/j.toxlet.2022.03.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/23/2022] [Accepted: 03/17/2022] [Indexed: 01/01/2023]
Abstract
Arsenic is a toxicant commonly found in drinking water. Even though its main route of exposure is oral, little is known of the impact of in vivo arsenic exposure on small intestine. In vitro studies have shown that arsenic decreases differentiation of stem and progenitor cells in several different tissues. Thus, small intestinal organoids were used to assess if arsenic exposure would also impair intestinal stem cell differentiation. Unexpectedly, no changes in markers of differentiated epithelial cells were seen. However, exposing mice to 100 ppb arsenic in drinking water for 5 weeks impaired distinct populations of intestinal stromal cells. Arsenic reduced the width of the pericryptal lamina propria by 1.6-fold, and reduced Pdgfra mRNA expression, which is expressed in intestinal telocytes and trophocytes, by 4.2-fold. The height or extension of Pdgfra+ telopodes into the villus tip was also significantly reduced. Transcript expression of several other stromal cell markers, such as Grem1, Gli, CD81, were reduced by 1.9-, 2.3-, and 1.4-fold, respectively. Further, significant correlations exist between levels of Pdgfra and Gli1, Grem1, and Bmp4. Our results suggest arsenic impairs intestinal trophocytes and telocytes, leading to alterations in the Bmp signaling pathway.
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53
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Walter RJ, Sonnentag SJ, Munoz-Sagredo L, Merkel M, Richert L, Bunert F, Heneka YM, Loustau T, Hodder M, Ridgway RA, Sansom OJ, Mely Y, Rothbauer U, Schmitt M, Orian-Rousseau V. Wnt signaling is boosted during intestinal regeneration by a CD44-positive feedback loop. Cell Death Dis 2022; 13:168. [PMID: 35190527 PMCID: PMC8861016 DOI: 10.1038/s41419-022-04607-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 01/17/2022] [Accepted: 02/04/2022] [Indexed: 12/24/2022]
Abstract
Enhancement of Wnt signaling is fundamental for stem cell function during intestinal regeneration. Molecular modules control Wnt activity by regulating signal transduction. CD44 is such a positive regulator and a Wnt target gene. While highly expressed in intestinal crypts and used as a stem cell marker, its role during intestinal homeostasis and regeneration remains unknown. Here we propose a CD44 positive-feedback loop that boosts Wnt signal transduction, thus impacting intestinal regeneration. Excision of Cd44 in Cd44fl/fl;VillinCreERT2 mice reduced Wnt target gene expression in intestinal crypts and affected stem cell functionality in organoids. Although the integrity of the intestinal epithelium was conserved in mice lacking CD44, they were hypersensitive to dextran sulfate sodium, and showed more severe inflammation and delayed regeneration. We localized the molecular function of CD44 at the Wnt signalosome, and identified novel DVL/CD44 and AXIN/CD44 complexes. CD44 thus promotes optimal Wnt signaling during intestinal regeneration.
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Affiliation(s)
- Romina J Walter
- Institute of Biological and Chemical Systems - Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Steffen J Sonnentag
- Institute of Biological and Chemical Systems - Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Leonel Munoz-Sagredo
- Institute of Biological and Chemical Systems - Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.,Faculty of Medicine, Universidad de Valparaiso, Angamos 655, 2540064, Vina del Mar, Chile
| | - Melanie Merkel
- Institute of Biological and Chemical Systems - Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Ludovic Richert
- UMR 7021 CNRS, Laboratoire de Bioimagerie et Pathologies, Faculté de Pharmacie, 74 route du Rhin, 67401, Illkirch, France
| | - Felix Bunert
- Institute of Biological and Chemical Systems - Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Yvonne M Heneka
- Institute of Biological and Chemical Systems - Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Thomas Loustau
- Institute of Biological and Chemical Systems - Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Michael Hodder
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow, G61 1BD, UK.,Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Glasgow, G61 1QH, UK
| | - Rachel A Ridgway
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow, G61 1BD, UK.,Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Glasgow, G61 1QH, UK
| | - Owen J Sansom
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow, G61 1BD, UK.,Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Glasgow, G61 1QH, UK
| | - Yves Mely
- UMR 7021 CNRS, Laboratoire de Bioimagerie et Pathologies, Faculté de Pharmacie, 74 route du Rhin, 67401, Illkirch, France
| | - Ulrich Rothbauer
- NMI Natural and Medical Sciences Institute at the University of Tuebingen, Markwiesenstrasse 55, 72770, Reutlingen, Germany.,Pharmaceutical Biotechnology, Eberhard Karls University Tuebingen, Auf der Morgenstelle 8, 72076, Tübingen, Germany
| | - Mark Schmitt
- Institute of Pharmacology, University of Marburg, Karl-von-Frisch-Strasse 2, 35043, Marburg, Germany
| | - Véronique Orian-Rousseau
- Institute of Biological and Chemical Systems - Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany.
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54
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Abstract
Complex multicellular organisms have evolved specific mechanisms to replenish cells in homeostasis and during repair. Here, we discuss how emerging technologies (e.g., single-cell RNA sequencing) challenge the concept that tissue renewal is fueled by unidirectional differentiation from a resident stem cell. We now understand that cell plasticity, i.e., cells adaptively changing differentiation state or identity, is a central tissue renewal mechanism. For example, mature cells can access an evolutionarily conserved program (paligenosis) to reenter the cell cycle and regenerate damaged tissue. Most tissues lack dedicated stem cells and rely on plasticity to regenerate lost cells. Plasticity benefits multicellular organisms, yet it also carries risks. For one, when long-lived cells undergo paligenotic, cyclical proliferation and redif-ferentiation, they can accumulate and propagate acquired mutations that activate oncogenes and increase the potential for developing cancer. Lastly, we propose a new framework for classifying patterns of cell proliferation in homeostasis and regeneration, with stem cells representing just one of the diverse methods that adult tissues employ.
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Affiliation(s)
- Jeffrey W. Brown
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | - Charles J. Cho
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA,Current affiliation: Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Jason C. Mills
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA,Current affiliation: Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA,Departments of Pathology and Immunology and Developmental Biology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA,Current affiliation: Departments of Medicine, Pathology and Immunology, and Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, USA
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55
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Lin X, Gaudino SJ, Jang KK, Bahadur T, Singh A, Banerjee A, Beaupre M, Chu T, Wong HT, Kim CK, Kempen C, Axelrad J, Huang H, Khalid S, Shah V, Eskiocak O, Parks OB, Berisha A, McAleer JP, Good M, Hoshino M, Blumberg R, Bialkowska AB, Gaffen SL, Kolls JK, Yang VW, Beyaz S, Cadwell K, Kumar P. IL-17RA-signaling in Lgr5 + intestinal stem cells induces expression of transcription factor ATOH1 to promote secretory cell lineage commitment. Immunity 2022; 55:237-253.e8. [PMID: 35081371 PMCID: PMC8895883 DOI: 10.1016/j.immuni.2021.12.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 07/06/2021] [Accepted: 12/20/2021] [Indexed: 12/14/2022]
Abstract
The Th17 cell-lineage-defining cytokine IL-17A contributes to host defense and inflammatory disease by coordinating multicellular immune responses. The IL-17 receptor (IL-17RA) is expressed by diverse intestinal cell types, and therapies targeting IL-17A induce adverse intestinal events, suggesting additional tissue-specific functions. Here, we used multiple conditional deletion models to identify a role for IL-17A in secretory epithelial cell differentiation in the gut. Paneth, tuft, goblet, and enteroendocrine cell numbers were dependent on IL-17A-mediated induction of the transcription factor ATOH1 in Lgr5+ intestinal epithelial stem cells. Although dispensable at steady state, IL-17RA signaling in ATOH1+ cells was required to regenerate secretory cells following injury. Finally, IL-17A stimulation of human-derived intestinal organoids that were locked into a cystic immature state induced ATOH1 expression and rescued secretory cell differentiation. Our data suggest that the cross talk between immune cells and stem cells regulates secretory cell lineage commitment and the integrity of the mucosa.
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Affiliation(s)
- Xun Lin
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Stephen J Gaudino
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Kyung Ku Jang
- Kimmel Center for Biology and Medicine at the Skirball Institute, New York University Grossman School of Medicine, New York, NY, USA
| | - Tej Bahadur
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Ankita Singh
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Anirban Banerjee
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Michael Beaupre
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Timothy Chu
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Hoi Tong Wong
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Chang-Kyung Kim
- Department of Medicine, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY 11794, USA
| | - Cody Kempen
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Jordan Axelrad
- Division of Gastroenterology and Hepatology, Department of Medicine, New York University Grossman School of Medicine, New York, NY 10016, USA
| | - Huakang Huang
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Saba Khalid
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Vyom Shah
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
| | - Onur Eskiocak
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
| | - Olivia B Parks
- University of Pittsburgh School of Medicine, Medical Scientist Training Program, Pittsburgh, PA 15213, USA
| | - Artan Berisha
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA
| | - Jeremy P McAleer
- Department of Pharmaceutical Science, Marshall University School of Pharmacy, Huntington, WV 25701, USA
| | - Misty Good
- Washington University School of Medicine, Department of Pediatrics, Division of Newborn Medicine, St. Louis Children's Hospital, St. Louis, MO 63110, USA
| | - Miko Hoshino
- Department of Biochemistry and Cellular Biology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8502, Japan
| | - Richard Blumberg
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Agnieszka B Bialkowska
- Department of Medicine, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY 11794, USA
| | - Sarah L Gaffen
- Division of Rheumatology and Clinical Immunology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Jay K Kolls
- Center for Translational Research in Infection and Inflammation, Tulane School of Medicine, New Orleans, LA 70112, USA
| | - Vincent W Yang
- Department of Medicine, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY 11794, USA
| | - Semir Beyaz
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
| | - Ken Cadwell
- Kimmel Center for Biology and Medicine at the Skirball Institute, New York University Grossman School of Medicine, New York, NY, USA; Division of Gastroenterology and Hepatology, Department of Medicine, New York University Grossman School of Medicine, New York, NY 10016, USA; Department of Microbiology, New York University Grossman School of Medicine, New York, NY 10016, USA.
| | - Pawan Kumar
- Department of Microbiology and Immunology, Stony Brook University, Stony Brook, NY, USA.
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56
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Markandey M, Bajaj A, Ilott NE, Kedia S, Travis S, Powrie F, Ahuja V. Gut microbiota: sculptors of the intestinal stem cell niche in health and inflammatory bowel disease. Gut Microbes 2022; 13:1990827. [PMID: 34747326 PMCID: PMC8583176 DOI: 10.1080/19490976.2021.1990827] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [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
Intestinal epithelium represents a dynamic and diverse cellular system that continuously interacts with gut commensals and external cues. Intestinal stem cells, which lie at the heart of epithelial renewal and turnover, proliferate to maintain a steady stem cell population and differentiate to form functional epithelial cell types. This rather sophisticated assembly-line is maintained by an elaborate micro-environment, sculpted by a myriad of host and gut microbiota-derived signals, forming an intestinal stem cell niche. This complex, yet crucial signaling niche undergoes dynamic changes during homeostasis and chronic intestinal inflammation. Inflammatory bowel disease refers to a chronic inflammatory response toward pathogenic or commensal microbiota, in a genetically susceptible host. Compositional and functional alterations in gut microbiota are pathognomonic of IBD.The present review highlights the modulatory role of gut microbiota on the intestinal stem cell niche during homeostasis and inflammatory bowel disease. We discuss the mechanisms of direct action of gut commensals (through microbiota-derived or microbiota-influenced metabolites) on ISCs, followed by their effects via other epithelial and immune cell types.
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Affiliation(s)
- Manasvini Markandey
- Department of Gastroenterology and Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | - Aditya Bajaj
- Department of Gastroenterology and Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | | | - Saurabh Kedia
- Department of Gastroenterology and Human Nutrition, All India Institute of Medical Sciences, New Delhi, India
| | - Simon Travis
- Translational Gastroenterology Unit, NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Fiona Powrie
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
| | - Vineet Ahuja
- Department of Gastroenterology and Human Nutrition, All India Institute of Medical Sciences, New Delhi, India,CONTACT Vineet Ahuja Department of Gastroenterology and Human Nutrition, All India Institute of Medical Sciences, New Delhi, India, 110029
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57
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Gieryńska M, Szulc-Dąbrowska L, Struzik J, Mielcarska MB, Gregorczyk-Zboroch KP. Integrity of the Intestinal Barrier: The Involvement of Epithelial Cells and Microbiota-A Mutual Relationship. Animals (Basel) 2022; 12:ani12020145. [PMID: 35049768 PMCID: PMC8772550 DOI: 10.3390/ani12020145] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/28/2021] [Accepted: 01/05/2022] [Indexed: 02/07/2023] Open
Abstract
Simple Summary The gastrointestinal tract is a complex organization of various types of epithelial cells forming a single layer of the mucosal barrier, the host mucosal immune system, and microorganisms termed as gut microbiota inhabiting this area. The mucosal barrier, including physical and chemical factors, spatially segregates gut microbiota and the host immune system preventing the development of immune response directed towards non-pathogenic commensals and dietary antigens. However, for the maintenance of the integrity of the mucosal surfaces, cross-talk between epithelial cells and microbiota is required. The microbiome and the intestinal epithelium developed a complex dependence necessary for sustaining intestinal homeostasis. In this review, we highlight the role of specific epithelial cell subtypes and their role in barrier arrangement, the mechanisms employed by them to control intestinal microbiota as well as the mechanisms utilized by the microbiome to regulate intestinal epithelial function. This review will provide information regarding the development of inflammatory disorders dependent on the loss of intestinal barrier function and composition of the intestinal microbiota. Abstract The gastrointestinal tract, which is constantly exposed to a multitude of stimuli, is considered responsible for maintaining the homeostasis of the host. It is inhabited by billions of microorganisms, the gut microbiota, which form a mutualistic relationship with the host. Although the microbiota is generally recognized as beneficial, at the same time, together with pathogens, they are a permanent threat to the host. Various populations of epithelial cells provide the first line of chemical and physical defense against external factors acting as the interface between luminal microorganisms and immunocompetent cells in lamina propria. In this review, we focus on some essential, innate mechanisms protecting mucosal integrity, thus responsible for maintaining intestine homeostasis. The characteristics of decisive cell populations involved in maintaining the barrier arrangement, based on mucus secretion, formation of intercellular junctions as well as production of antimicrobial peptides, responsible for shaping the gut microbiota, are presented. We emphasize the importance of cross-talk between gut microbiota and epithelial cells as a factor vital for the maintenance of the homeostasis of the GI tract. Finally, we discuss how the imbalance of these regulations leads to the compromised barrier integrity and dysbiosis considered to contribute to inflammatory disorders and metabolic diseases.
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58
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Lee C, An M, Joung JG, Park WY, Chang DK, Kim YH, Hong SN. TNFα Induces LGR5+ Stem Cell Dysfunction In Patients With Crohn's Disease. Cell Mol Gastroenterol Hepatol 2022; 13:789-808. [PMID: 34700029 PMCID: PMC8783132 DOI: 10.1016/j.jcmgh.2021.10.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 10/16/2021] [Accepted: 10/18/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS Tumor necrosis factor alpha (TNFα) is considered a major tissue damage-promoting effector in Crohn's disease (CD) pathogenesis. Patient-derived intestinal organoid (enteroid) recapitulates the disease-specific characteristics of the intestinal epithelium. This study aimed to evaluate the intestinal epithelial responses to TNFα in enteroids derived from healthy controls and compare them with those of CD patient-derived enteroids. METHODS Human enteroids derived from patients with CD and controls were treated with TNFα (30 ng/mL), and cell viability and gene expression patterns were evaluated. RESULTS TNFα induced MLKL-mediated necroptotic cell death, which was more pronounced in CD patient-derived enteroids than in control enteroids. Immunohistochemistry and RNA sequencing revealed that treatment with TNFα caused expansion of the intestinal stem cell (ISC) populations. However, expanded ISC subpopulations differed in control and CD patient-derived enteroids, with LGR5+ active ISCs in control enteroids and reserve ISCs, such as BMI1+ cells, in CD patient-derived enteroids. In single-cell RNA sequencing, LGR5+ ISC-enriched cell cluster showed strong expression of TNFRSF1B (TNFR2) and cyclooxygenase-prostaglandin E2 (PGE2) activation. In TNFα-treated CD patient-derived enteroids, exogenous PGE2 (10 nmol/L) induced the expansion of the LGR5+ ISC population and improved organoid-forming efficiency, viability, and wound healing. CONCLUSIONS TNFα increases necroptosis of differentiated cells and induces the expansion of LGR5+ ISCs. In CD patient-derived enteroids, TNFα causes LGR5+ stem cell dysfunction (expansion failure), and exogenous PGE2 treatment restored the functions of LGR5+ stem cells. Therefore, PGE2 can be used to promote mucosal healing in patients with CD.
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Affiliation(s)
- Chansu Lee
- Department of Medicine, Samsung Medical Center, Seoul, Korea; Stem Cell & Regenerative Medicine Center, Samsung Medical Center, Seoul, Korea
| | - Minae An
- Samsung Genome Institute, Samsung Medical Center, Seoul, Korea
| | - Je-Gun Joung
- Samsung Genome Institute, Samsung Medical Center, Seoul, Korea; Department of Biomedical Science, College of Life Science, CHA University, Seongnam, Republic of Korea
| | - Woong-Yang Park
- Samsung Genome Institute, Samsung Medical Center, Seoul, Korea
| | | | - Young-Ho Kim
- Department of Medicine, Samsung Medical Center, Seoul, Korea
| | - Sung Noh Hong
- Department of Medicine, Samsung Medical Center, Seoul, Korea; Stem Cell & Regenerative Medicine Center, Samsung Medical Center, Seoul, Korea.
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59
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Long-term stability and protection efficacy of the RBD-targeting COVID-19 mRNA vaccine in nonhuman primates. Signal Transduct Target Ther 2021; 6:438. [PMID: 34952914 PMCID: PMC8703211 DOI: 10.1038/s41392-021-00861-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 10/28/2021] [Accepted: 12/07/2021] [Indexed: 01/08/2023] Open
Abstract
Messenger RNA (mRNA) vaccine technology has shown its power in preventing the ongoing COVID-19 pandemic. Two mRNA vaccines targeting the full-length S protein of SARS-CoV-2 have been authorized for emergency use. Recently, we have developed a lipid nanoparticle-encapsulated mRNA (mRNA-LNP) encoding the receptor-binding domain (RBD) of SARS-CoV-2 (termed ARCoV), which confers complete protection in mouse model. Herein, we further characterized the protection efficacy of ARCoV in nonhuman primates and the long-term stability under normal refrigerator temperature. Intramuscular immunization of two doses of ARCoV elicited robust neutralizing antibodies as well as cellular response against SARS-CoV-2 in cynomolgus macaques. More importantly, ARCoV vaccination in macaques significantly protected animals from acute lung lesions caused by SARS-CoV-2, and viral replication in lungs and secretion in nasal swabs were completely cleared in all animals immunized with low or high doses of ARCoV. No evidence of antibody-dependent enhancement of infection was observed throughout the study. Finally, extensive stability assays showed that ARCoV can be stored at 2-8 °C for at least 6 months without decrease of immunogenicity. All these promising results strongly support the ongoing clinical trial.
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60
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Meyer AR, Brown ME, McGrath PS, Dempsey PJ. Injury-Induced Cellular Plasticity Drives Intestinal Regeneration. Cell Mol Gastroenterol Hepatol 2021; 13:843-856. [PMID: 34915204 PMCID: PMC8803615 DOI: 10.1016/j.jcmgh.2021.12.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 12/06/2021] [Accepted: 12/07/2021] [Indexed: 12/14/2022]
Abstract
The epithelial lining of the intestine, particularly the stem cell compartment, is affected by harsh conditions in the luminal environment and also is susceptible to genotoxic agents such as radiation and chemotherapy. Therefore, the ability for intestinal epithelial cells to revert to a stem cell state is an important physiological damage response to regenerate the intestinal epithelium at sites of mucosal injury. Many signaling networks involved in maintaining the stem cell niche are activated as part of the damage response to promote cellular plasticity and regeneration. The relative contribution of each cell type and signaling pathway is a critical area of ongoing research, likely dependent on the nature of injury as well as the regional specification within the intestine. Here, we review the current understanding of the multicellular cooperation to restore the intestinal epithelium after damage.
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Affiliation(s)
| | | | | | - Peter J. Dempsey
- Correspondence Address correspondence to: Peter J. Dempsey, PhD, Section of Developmental Biology, Department of Pediatrics, University of Colorado School of Medicine, 1775 Aurora Court, Barbara Davis Center, M20–3306, Aurora, Colorado 80045. fax: (303) 724-6538.
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61
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Han YM, Gao H, Hua RX, Liang C, Guo YX, Shang HW, Lu X, Xu JD. Paneth cells and intestinal health. Shijie Huaren Xiaohua Zazhi 2021; 29:1362-1372. [DOI: 10.11569/wcjd.v29.i23.1362] [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] [Indexed: 02/06/2023] Open
Abstract
Paneth cells (PC) are a group of secretory cells derived from intestinal stem cells (ISC) and colonized in the bottom of the small intestinal crypt. As an important "guardian" of intestinal health, PC can not only secrete a variety of antibacterial peptides and cytokines to regulate intestinal homeostasis and participate in immune responses, but also release growth factors to support the stem cell niche and regulate their proliferation and differentiation. Of particular concern, as a static stem cell pool, PC can acquire a stem cell-like transcriptome after the injury of intestinal tissue so as to promote regeneration and repair the damaged intestinal tissue. Particularly, PC are closely related to a number of diseases that affect intestinal health, such as inflammatory bowel disease (IBD) and colorectal cancer (CRC). The research of biological functions of PC may provide ideas for the treatment of these diseases. In summary, the role of PC in maintaining intestinal health should not be underestimated.
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Affiliation(s)
- Yi-Min Han
- 2019 Oral Medicine, Capital Medical University, Beijing 100069, China
| | - Han Gao
- Department of Physiology and Pathophysiology, Capital Medical University, Beijing 100069, China
| | - Rong-Xuan Hua
- 2020 Clinical Medicine of "5+3" Program, Capital Medical University, Beijing 100069, China
| | - Chen Liang
- Clinical Medicine, Capital Medical University, Beijing 100069, China
| | - Yue-Xin Guo
- 2019 Oral Medicine of "5+3" Program, Capital Medical University, Beijing 100069, China
| | - Hong-Wei Shang
- Experimental Teaching Center of Basic Medical Morphology, Capital Medical University, Beijing 100069, China
| | - Xin Lu
- Experimental Teaching Center of Basic Medical Morphology, Capital Medical University, Beijing 100069, China
| | - Jing-Dong Xu
- Department of Physiology and Pathophysiology, Capital Medical University, Beijing 100069, China
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Fu X, He Q, Tao Y, Wang M, Wang W, Wang Y, Yu QC, Zhang F, Zhang X, Chen YG, Gao D, Hu P, Hui L, Wang X, Zeng YA. Recent advances in tissue stem cells. SCIENCE CHINA. LIFE SCIENCES 2021; 64:1998-2029. [PMID: 34865207 DOI: 10.1007/s11427-021-2007-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 06/08/2021] [Indexed: 12/13/2022]
Abstract
Stem cells are undifferentiated cells capable of self-renewal and differentiation, giving rise to specialized functional cells. Stem cells are of pivotal importance for organ and tissue development, homeostasis, and injury and disease repair. Tissue-specific stem cells are a rare population residing in specific tissues and present powerful potential for regeneration when required. They are usually named based on the resident tissue, such as hematopoietic stem cells and germline stem cells. This review discusses the recent advances in stem cells of various tissues, including neural stem cells, muscle stem cells, liver progenitors, pancreatic islet stem/progenitor cells, intestinal stem cells, and prostate stem cells, and the future perspectives for tissue stem cell research.
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Affiliation(s)
- Xin Fu
- Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200233, China
| | - Qiang He
- State Key Laboratory 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, 200031, China
| | - Yu Tao
- State Key Laboratory 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, 200031, China
| | - Mengdi Wang
- State Key Laboratory of Brain and Cognitive Science, CAS Center for Excellence in Brain Science and Intelligence Technology, Bioland Laboratory (Guangzhou), Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wei Wang
- State Key Laboratory of Brain and Cognitive Science, CAS Center for Excellence in Brain Science and Intelligence Technology, Bioland Laboratory (Guangzhou), Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yalong Wang
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Qing Cissy Yu
- State Key Laboratory 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, 200031, China
| | - Fang Zhang
- State Key Laboratory 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, 200031, China
| | - Xiaoyu Zhang
- State Key Laboratory 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, 200031, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ye-Guang Chen
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China.
- Max-Planck Center for Tissue Stem Cell Research and Regenerative Medicine, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, 510530, China.
| | - Dong Gao
- State Key Laboratory 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, 200031, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Ping Hu
- State Key Laboratory 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, 200031, China.
- Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200233, China.
- Max-Planck Center for Tissue Stem Cell Research and Regenerative Medicine, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, 510530, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
- Bio-Research Innovation Center, Shanghai Institute of Biochemistry and Cell Biology, Suzhou, 215121, China.
| | - Lijian Hui
- State Key Laboratory 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, 200031, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
- Bio-Research Innovation Center, Shanghai Institute of Biochemistry and Cell Biology, Suzhou, 215121, China.
- School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China.
- School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Hangzhou, 310024, China.
| | - Xiaoqun Wang
- State Key Laboratory of Brain and Cognitive Science, CAS Center for Excellence in Brain Science and Intelligence Technology, Bioland Laboratory (Guangzhou), Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
- Advanced Innovation Center for Human Brain Protection, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, 100069, China.
| | - Yi Arial Zeng
- State Key Laboratory 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, 200031, China.
- Bio-Research Innovation Center, Shanghai Institute of Biochemistry and Cell Biology, Suzhou, 215121, China.
- School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Hangzhou, 310024, China.
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Identifying key regulators of the intestinal stem cell niche. Biochem Soc Trans 2021; 49:2163-2176. [PMID: 34665221 PMCID: PMC8589435 DOI: 10.1042/bst20210223] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/24/2021] [Accepted: 09/28/2021] [Indexed: 12/11/2022]
Abstract
The intestinal tract is lined by a single layer of epithelium that is one of the fastest regenerating tissues in the body and which therefore requires a very active and exquisitely controlled stem cell population. Rapid renewal of the epithelium is necessary to provide a continuous physical barrier from the intestinal luminal microenvironment that contains abundant microorganisms, whilst also ensuring an efficient surface for the absorption of dietary components. Specialised epithelial cell populations are important for the maintenance of intestinal homeostasis and are derived from adult intestinal stem cells (ISCs). Actively cycling ISCs divide by a neutral drift mechanism yielding either ISCs or transit-amplifying epithelial cells, the latter of which differentiate to become either absorptive lineages or to produce secretory factors that contribute further to intestinal barrier maintenance or signal to other cellular compartments. The mechanisms controlling ISC abundance, longevity and activity are regulated by several different cell populations and signalling pathways in the intestinal lamina propria which together form the ISC niche. However, the complexity of the ISC niche and communication mechanisms between its different components are only now starting to be unravelled with the assistance of intestinal organoid/enteroid/colonoid and single-cell imaging and sequencing technologies. This review explores the interaction between well-established and emerging ISC niche components, their impact on the intestinal epithelium in health and in the context of intestinal injury and highlights future directions and implications for this rapidly developing field.
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64
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Accumulation of Paneth Cells in Early Colorectal Adenomas Is Associated with Beta-Catenin Signaling and Poor Patient Prognosis. Cells 2021; 10:cells10112928. [PMID: 34831152 PMCID: PMC8616107 DOI: 10.3390/cells10112928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/25/2021] [Accepted: 10/27/2021] [Indexed: 11/16/2022] Open
Abstract
Background: Previous studies in mice indicated that Paneth cells and c-Kit-positive goblet cells represent the stem cell niche of the small intestine and colon, respectively, partly by supporting Wnt and Notch activation. Whether these cell populations play a similar role in human intestinal cancer remains unexplored. Methods: We performed histopathological evaluation and immunohistochemical analysis of early colorectal adenomas and carcinoma adenoma from patients at the Hospital del Mar in Barcelona. We then determined the possible correlation between the different parameters analyzed and with patient outcomes. Results: Paneth cells accumulate in a subset of human colorectal adenomas directly associated with Notch and Wnt/β-catenin activation. Adenoma areas containing Paneth cells display increased vessel density in the lamina propria and higher levels of the stem cell marker EphB2. In an in-house cohort of 200 colorectal adenoma samples, we also observed a significant correlation between the presence of Paneth cells and Wnt activation. Kaplan–Meier analysis indicated that early adenoma patients carrying Paneth cell-positive tumors display reduced disease-free survival compared with patients with Paneth cell-free lesions. Conclusions: Our results indicate that Paneth cells contribute to the initial steps of cancer progression by providing the stem cell niche to adenoma cells, which could be therapeutically exploited.
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Abstract
The mutational landscape of colorectal cancer (CRC) does not enable predictions to be made about the survival of patients or their response to therapy. Instead, studying the polarization and activation profiles of immune cells and stromal cells in the tumour microenvironment has been shown to be more informative, thus making CRC a prototypical example of the importance of an inflammatory microenvironment for tumorigenesis. Here, we review our current understanding of how colon cancer cells interact with their microenvironment, comprised of immune cells, stromal cells and the intestinal microbiome, to suppress or escape immune responses and how inflammatory processes shape the immune pathogenesis of CRC.
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66
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Liu CY, Cham CM, Chang EB. Epithelial wound healing in inflammatory bowel diseases: the next therapeutic frontier. Transl Res 2021; 236:35-51. [PMID: 34126257 PMCID: PMC8380699 DOI: 10.1016/j.trsl.2021.06.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/25/2021] [Accepted: 06/08/2021] [Indexed: 02/07/2023]
Abstract
Patients with one of the many chronic inflammatory disorders broadly classified as inflammatory bowel disease (IBD) now have a diverse set of immunomodulatory therapies at their disposal. Despite these recent medical advances, complete sustained remission of disease remains elusive for most patients. The full healing of the damaged intestinal mucosa is the primary goal of all therapies. Achieving this requires not just a reduction of the aberrant immunological response, but also wound healing of the epithelium. No currently approved therapy directly targets the epithelium. Epithelial repair is compromised in IBD and normally facilitates re-establishment of the homeostatic barrier between the host and the microbiome. In this review, we summarize the evidence that epithelial wound healing represents an important yet underdeveloped therapeutic modality for IBD. We highlight 3 general approaches that are promising for developing a new class of epithelium-targeted therapies: epithelial stem cells, cytokines, and microbiome engineering. We also provide a frank discussion of some of the challenges that must be overcome for epithelial repair to be therapeutically leveraged. A concerted approach by the field to develop new therapies targeting epithelial wound healing will offer patients a game-changing, complementary class of medications and could dramatically improve outcomes.
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Affiliation(s)
- Cambrian Y Liu
- Department of Medicine, The University of Chicago, Chicago, Illinois.
| | - Candace M Cham
- Department of Medicine, The University of Chicago, Chicago, Illinois
| | - Eugene B Chang
- Department of Medicine, The University of Chicago, Chicago, Illinois.
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67
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Hidalgo‐Garcia L, Molina‐Tijeras JA, Huertas‐Peña F, Ruiz‐Malagón AJ, Diez‐Echave P, Vezza T, Rodríguez‐Sojo MJ, Morón R, Becerra‐Massare P, Rodríguez‐Nogales A, Gálvez J, Rodríguez‐Cabezas ME, Anderson P. Intestinal mesenchymal cells regulate immune responses and promote epithelial regeneration in vitro and in dextran sulfate sodium-induced experimental colitis in mice. Acta Physiol (Oxf) 2021; 233:e13699. [PMID: 34089568 DOI: 10.1111/apha.13699] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 05/28/2021] [Accepted: 06/01/2021] [Indexed: 12/25/2022]
Abstract
AIM Disruption of the intestinal mucosal tolerance, that is, the immunological unresponsiveness to innocuous food antigens and the commensal microbiota, in the colon is associated with several chronic diseases including inflammatory bowel disease (IBD). Understanding the mechanisms responsible for intestinal mucosal tolerance has potential translational value for its therapy and management. Human intestinal mesenchymal cells (iMCs) play important roles in colonic mucosal tolerance, but further studies on their tissue regenerative and immunomodulatory capacities are necessary in order to fully understand their function in health and disease. METHODS In this study, we have isolated and analysed the capacity of human iMCs to promote wound healing and modulate immune responses in vitro and in vivo, using the dextran sulfate sodium (DSS)-induced colitis model. RESULTS Cultured iMCs were CD45- CD73+ CD90+ CD105+ and accelerated the wound closure in a normal colon mucosa (NCM) 356 human epithelial cell wound healing assay. Furthermore, iMCs blocked the LPS-mediated induction of TNF-α in THP-1 macrophages and inhibited the proliferation of peripheral blood mononuclear cells, partly through the induction of indoleamine-2,3-dioxygenase. In DSS colitic mice, iMCs administration reduced the disease activity index and ameliorated intestinal tissue damage and permeability. Furthermore, iMCs reduced intestinal inflammation, evidenced by a decreased mRNA expression of pro-inflammatory cytokines, reduced IL-1β secretion by intestinal explants and inhibited colonic iNOS protein expression. CONCLUSIONS Our data show that human iMCs isolated from the noninflamed intestine possess tissue-regenerative and immunomodulatory capacities that could potentially be harnessed/restored in order to reduce IBD severity.
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Affiliation(s)
- Laura Hidalgo‐Garcia
- Department of Pharmacology Center for Biomedical Research (CIBM) University of Granada Granada Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA) Granada Spain
| | - José Alberto Molina‐Tijeras
- Department of Pharmacology Center for Biomedical Research (CIBM) University of Granada Granada Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA) Granada Spain
| | - Francisco Huertas‐Peña
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA) Granada Spain
- Servicio de Cirugía Hospital Universitario Virgen de las Nieves Granada Spain
| | - Antonio Jesús Ruiz‐Malagón
- Department of Pharmacology Center for Biomedical Research (CIBM) University of Granada Granada Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA) Granada Spain
| | - Patricia Diez‐Echave
- Department of Pharmacology Center for Biomedical Research (CIBM) University of Granada Granada Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA) Granada Spain
| | - Teresa Vezza
- Department of Pharmacology Center for Biomedical Research (CIBM) University of Granada Granada Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA) Granada Spain
| | - María Jesús Rodríguez‐Sojo
- Department of Pharmacology Center for Biomedical Research (CIBM) University of Granada Granada Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA) Granada Spain
| | - Rocío Morón
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA) Granada Spain
- Servicio Farmacia Hospitalaria Hospital Universitario Clínico San Cecilio Granada Spain
| | | | - Alba Rodríguez‐Nogales
- Department of Pharmacology Center for Biomedical Research (CIBM) University of Granada Granada Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA) Granada Spain
- Servicio de Digestivo Hospital Universitario Virgen de las Nieves Granada Spain
| | - Julio Gálvez
- Department of Pharmacology Center for Biomedical Research (CIBM) University of Granada Granada Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA) Granada Spain
- Centre for Biomedical Research in Liver and Digestive Diseases Network (CIBER‐EHD) University of Granada Granada Spain
| | - María Elena Rodríguez‐Cabezas
- Department of Pharmacology Center for Biomedical Research (CIBM) University of Granada Granada Spain
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA) Granada Spain
| | - Per Anderson
- Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA) Granada Spain
- Servicio de Análisis Clínicos e Inmunología Hospital Universitario Virgen de las Nieves Granada Spain
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68
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Stokes K, Nunes M, Trombley C, Flôres DEFL, Wu G, Taleb Z, Alkhateeb A, Banskota S, Harris C, Love OP, Khan WI, Rueda L, Hogenesch JB, Karpowicz P. The Circadian Clock Gene, Bmal1, Regulates Intestinal Stem Cell Signaling and Represses Tumor Initiation. Cell Mol Gastroenterol Hepatol 2021; 12:1847-1872.e0. [PMID: 34534703 PMCID: PMC8591196 DOI: 10.1016/j.jcmgh.2021.08.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 08/02/2021] [Accepted: 08/03/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS Circadian rhythms are daily physiological oscillations driven by the circadian clock: a 24-hour transcriptional timekeeper that regulates hormones, inflammation, and metabolism. Circadian rhythms are known to be important for health, but whether their loss contributes to colorectal cancer is not known. We tested the nonredundant clock gene Bmal1 in intestinal homeostasis and tumorigenesis, using the Apcmin model of colorectal cancer. METHODS Bmal1 mutant, epithelium-conditional Bmal1 mutant, and photoperiod (day/night cycle) disrupted mice bearing the Apcmin allele were assessed for tumorigenesis. Tumors and normal nontransformed tissue were characterized. Intestinal organoids were assessed for circadian transcription rhythms by RNA sequencing, and in vivo and organoid assays were used to test Bmal1-dependent proliferation and self-renewal. RESULTS Loss of Bmal1 or circadian photoperiod increases tumor initiation. In the intestinal epithelium the clock regulates transcripts involved in regeneration and intestinal stem cell signaling. Tumors have no self-autonomous clock function and only weak clock function in vivo. Apcmin clock-disrupted tumors show high Yes-associated protein 1 (Hippo signaling) activity but show low Wnt (Wingless and Int-1) activity. Intestinal organoid assays show that loss of Bmal1 increases self-renewal in a Yes-associated protein 1-dependent manner. CONCLUSIONS Bmal1 regulates intestinal stem cell pathways, including Hippo signaling, and the loss of circadian rhythms potentiates tumor initiation. Transcript profiling: GEO accession number: GSE157357.
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Affiliation(s)
- Kyle Stokes
- Department of Biomedical Sciences, Windsor, Ontario, Canada
| | - Malika Nunes
- Department of Biomedical Sciences, Windsor, Ontario, Canada
| | | | - Danilo E F L Flôres
- Division of Human Genetics and Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Gang Wu
- Division of Human Genetics and Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Zainab Taleb
- Department of Biomedical Sciences, Windsor, Ontario, Canada
| | | | - Suhrid Banskota
- Department of Pathology and Molecular Medicine, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Chris Harris
- Department of Integrative Biology, University of Windsor, Windsor, Ontario, Canada
| | - Oliver P Love
- Department of Integrative Biology, University of Windsor, Windsor, Ontario, Canada
| | - Waliul I Khan
- Department of Pathology and Molecular Medicine, Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Luis Rueda
- School of Computer Science, Windsor, Ontario, Canada
| | - John B Hogenesch
- Division of Human Genetics and Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
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69
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Girish N, Liu CY, Gadeock S, Gomez ML, Huang Y, Sharifkhodaei Z, Washington MK, Polk DB. Persistence of Lgr5+ colonic epithelial stem cells in mouse models of inflammatory bowel disease. Am J Physiol Gastrointest Liver Physiol 2021; 321:G308-G324. [PMID: 34260310 PMCID: PMC8461791 DOI: 10.1152/ajpgi.00248.2020] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 07/02/2021] [Accepted: 07/12/2021] [Indexed: 02/08/2023]
Abstract
Intestinal mucosal healing is the primary therapeutic goal of medical treatments for inflammatory bowel disease (IBD). Epithelial stem cells are key players in the healing process. Lgr5+ stem cells maintain cellular turnover during homeostasis in the colonic crypt. However, they are lost and dispensable for repair in a wide variety of injury models, including dextran sulfate sodium (DSS) colitis, radiation, helminth infection, and T-cell activation. The direct loss of Lgr5+ cells activates a plasticity response in the epithelium in which other cell types can serve as stem cells. Whether this paradigm applies to mouse models of IBD remains unknown. In contrast to previously tested models, IBD models involve an inflammatory response rooted in the loss of immunologic tolerance to intestinal luminal contents including the microbiome. Here, we show the persistence of Lgr5+ cells in oxazolone, 2,4,6-trinitrobenzene sulfonic acid (TNBS), and Il10-/-, and Il10-/- Tnfr1-/- IBD models. This contrasts with results obtained from DSS-induced injury. Through high-throughput expression profiling, we find that these colitis models were associated with distinct patterns of cytokine expression. Direct exposure of colonic epithelial organoids to DSS, oxazolone, or TNBS resulted in increased apoptosis and loss of Lgr5+ cells. Targeted ablation of Lgr5+ cells resulted in severe exacerbation of chronic, antibody-induced IL-10-deficient colitis, but had only modest effects in TNBS-induced colitis. These results show that distinct mouse models of IBD-like colitis induce different patterns of Lgr5+ stem cell retention and function.NEW & NOTEWORTHY Acute intestinal injury and epithelial repair are associated with the loss of fast-cycling Lgr5+ stem cells and plasticity in the activation of formerly quiescent cell populations. In contrast, here we show in murine inflammatory bowel disease the persistence of the Lgr5+ stem cell population and its essential role in restricting the severity of chronic colitis. This demonstrates a diversity of stem cell responses to colitis.
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Affiliation(s)
- Nandini Girish
- Division of Pediatric Gastroenterology, Hepatology, & Nutrition, Department of Pediatrics, The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, California
- Division of Pediatric Gastroenterology, Hepatology, & Nutrition, Department of Pediatrics, UC University of California San Diego School of Medicine, San Diego, California
| | - Cambrian Y Liu
- Division of Pediatric Gastroenterology, Hepatology, & Nutrition, Department of Pediatrics, The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, California
- Department of Medicine, The University of Chicago, Chicago, Illinois
| | - Safina Gadeock
- Division of Pediatric Gastroenterology, Hepatology, & Nutrition, Department of Pediatrics, The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, California
- Division of Pediatric Gastroenterology, Hepatology, & Nutrition, Department of Pediatrics, UC University of California San Diego School of Medicine, San Diego, California
| | - Marie L Gomez
- Department of Biochemistry & Molecular Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, California
| | - Ying Huang
- Division of Pediatric Gastroenterology, Hepatology, & Nutrition, Department of Pediatrics, The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, California
| | - Zohreh Sharifkhodaei
- Division of Pediatric Gastroenterology, Hepatology, & Nutrition, Department of Pediatrics, The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, California
- Division of Pediatric Gastroenterology, Hepatology, & Nutrition, Department of Pediatrics, UC University of California San Diego School of Medicine, San Diego, California
| | - M Kay Washington
- Department of Pathology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - D Brent Polk
- Division of Pediatric Gastroenterology, Hepatology, & Nutrition, Department of Pediatrics, The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, California
- Division of Pediatric Gastroenterology, Hepatology, & Nutrition, Department of Pediatrics, UC University of California San Diego School of Medicine, San Diego, California
- Department of Biochemistry & Molecular Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, California
- Department of Pediatrics, Keck School of Medicine of the University of Southern California, Los Angeles, California
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70
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Vitamin D Receptor Protects against Radiation-Induced Intestinal Injury in Mice via Inhibition of Intestinal Crypt Stem/Progenitor Cell Apoptosis. Nutrients 2021; 13:nu13092910. [PMID: 34578802 PMCID: PMC8466099 DOI: 10.3390/nu13092910] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 08/13/2021] [Accepted: 08/20/2021] [Indexed: 12/13/2022] Open
Abstract
It is urgent to seek new potential targets for the prevention or relief of gastrointestinal syndrome in clinical radiation therapy for cancers. Vitamin D, mediated through the vitamin D receptor (VDR), has been identified as a protective nutrient against ionizing radiation (IR)-induced damage. This study investigated whether VDR could inhibit IR-induced intestinal injury and explored underlying mechanism. We first found that vitamin D induced VDR expression and inhibited IR-induced DNA damage and apoptosis in vitro. VDR was highly expressed in intestinal crypts and was critical for crypt stem/progenitor cell proliferation under physiological conditions. Next, VDR-deficient mice exposed to IR significantly increased DNA damage and crypt stem/progenitor cell apoptosis, leading to impaired intestinal regeneration as well as shorter survival time. Furthermore, VDR deficiency activated the Pmaip1-mediated apoptotic pathway of intestinal crypt stem/progenitor cells in IR-treated mice, whereas inhibition of Pmaip1 expression by siRNA transfection protected against IR-induced cell apoptosis. Therefore, VDR protects against IR-induced intestinal injury through inhibition of crypt stem/progenitor cell apoptosis via the Pmaip1-mediated pathway. Our results reveal the importance of VDR level in clinical radiation therapy, and targeting VDR may be a useful strategy for treatment of gastrointestinal syndrome.
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71
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Wang S, Kai L, Zhu L, Xu B, Chen N, Valencak TG, Wang Y, Shan T. Cathelicidin-WA Protects Against LPS-Induced Gut Damage Through Enhancing Survival and Function of Intestinal Stem Cells. Front Cell Dev Biol 2021; 9:685363. [PMID: 34381773 PMCID: PMC8350165 DOI: 10.3389/fcell.2021.685363] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 06/25/2021] [Indexed: 12/22/2022] Open
Abstract
Preservation of intestinal stem cells (ISCs) plays a critical role in initiating epithelial regeneration after intestinal injury. Cathelicidin peptides have been shown to participate in regulating intestinal damage repair. However, it is not known how exactly Cathelicidin-WA (CWA) exert its function after tissue damage. Using a gut injury model in mice involving Lipopolysaccharide (LPS), we observed that CWA administration significantly improved intestinal barrier function, preserved ISCs survival, and augmented ISCs viability within the small intestine (SI) under LPS treatment. In addition, CWA administration effectively prevented proliferation stops and promoted the growth of isolated crypts. Mechanistically, our results show that the appearance of γH2AX was accompanied by weakened expression of SETDB1, a gene that has been reported to safeguard genome stability. Notably, we found that CWA significantly rescued the decreased expression of SETDB1 and reduced DNA damage after LPS treatment. Taken together, CWA could protect against LPS-induced gut damage through enhancing ISCs survival and function. Our results suggest that CWA may become an effective therapeutic regulator to treat intestinal diseases and infections.
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Affiliation(s)
- Sisi Wang
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Ministry of Education, Hangzhou, China.,Zhejiang Provincial Laboratory of Feed and Animal Nutrition, Hangzhou, China
| | - Lixia Kai
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Ministry of Education, Hangzhou, China.,Zhejiang Provincial Laboratory of Feed and Animal Nutrition, Hangzhou, China
| | - Luoyi Zhu
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Ministry of Education, Hangzhou, China.,Zhejiang Provincial Laboratory of Feed and Animal Nutrition, Hangzhou, China
| | - Bocheng Xu
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Ministry of Education, Hangzhou, China.,Zhejiang Provincial Laboratory of Feed and Animal Nutrition, Hangzhou, China
| | - Nana Chen
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Ministry of Education, Hangzhou, China.,Zhejiang Provincial Laboratory of Feed and Animal Nutrition, Hangzhou, China
| | | | - Yizhen Wang
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Ministry of Education, Hangzhou, China.,Zhejiang Provincial Laboratory of Feed and Animal Nutrition, Hangzhou, China
| | - Tizhong Shan
- College of Animal Sciences, Zhejiang University, Hangzhou, China.,Key Laboratory of Animal Feed and Nutrition of Zhejiang Province, Ministry of Education, Hangzhou, China.,Zhejiang Provincial Laboratory of Feed and Animal Nutrition, Hangzhou, China
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72
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Abud HE, Chan WH, Jardé T. Source and Impact of the EGF Family of Ligands on Intestinal Stem Cells. Front Cell Dev Biol 2021; 9:685665. [PMID: 34350179 PMCID: PMC8327171 DOI: 10.3389/fcell.2021.685665] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 06/27/2021] [Indexed: 12/27/2022] Open
Abstract
Epidermal Growth Factor (EGF) has long been known for its role in promoting proliferation of intestinal epithelial cells. EGF is produced by epithelial niche cells at the base of crypts in vivo and is routinely added to the culture medium to support the growth of intestinal organoids ex vivo. The recent identification of diverse stromal cell populations that reside underneath intestinal crypts has enabled the characterization of key growth factor cues supplied by these cells. The nature of these signals and how they are delivered to drive intestinal epithelial development, daily homeostasis and tissue regeneration following injury are being investigated. It is clear that aside from EGF, other ligands of the family, including Neuregulin 1 (NRG1), have distinct roles in supporting the function of intestinal stem cells through the ErbB pathway.
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Affiliation(s)
- Helen E Abud
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Clayton, VIC, Australia
| | - Wing Hei Chan
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Clayton, VIC, Australia
| | - Thierry Jardé
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia.,Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Clayton, VIC, Australia
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73
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Deregulation of Transcriptional Enhancers in Cancer. Cancers (Basel) 2021; 13:cancers13143532. [PMID: 34298745 PMCID: PMC8303223 DOI: 10.3390/cancers13143532] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 06/29/2021] [Accepted: 07/08/2021] [Indexed: 12/14/2022] Open
Abstract
Simple Summary One of the major challenges in cancer treatments is the dynamic adaptation of tumor cells to cancer therapies. In this regard, tumor cells can modify their response to environmental cues without altering their DNA sequence. This cell plasticity enables cells to undergo morphological and functional changes, for example, during the process of tumour metastasis or when acquiring resistance to cancer therapies. Central to cell plasticity, are the dynamic changes in gene expression that are controlled by a set of molecular switches called enhancers. Enhancers are DNA elements that determine when, where and to what extent genes should be switched on and off. Thus, defects in enhancer function can disrupt the gene expression program and can lead to tumour formation. Here, we review how enhancers control the activity of cancer-associated genes and how defects in these regulatory elements contribute to cell plasticity in cancer. Understanding enhancer (de)regulation can provide new strategies for modulating cell plasticity in tumour cells and can open new research avenues for cancer therapy. Abstract Epigenetic regulations can shape a cell’s identity by reversible modifications of the chromatin that ultimately control gene expression in response to internal and external cues. In this review, we first discuss the concept of cell plasticity in cancer, a process that is directly controlled by epigenetic mechanisms, with a particular focus on transcriptional enhancers as the cornerstone of epigenetic regulation. In the second part, we discuss mechanisms of enhancer deregulation in adult stem cells and epithelial-to-mesenchymal transition (EMT), as two paradigms of cell plasticity that are dependent on epigenetic regulation and serve as major sources of tumour heterogeneity. Finally, we review how genetic variations at enhancers and their epigenetic modifiers contribute to tumourigenesis, and we highlight examples of cancer drugs that target epigenetic modifications at enhancers.
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74
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Gleizes A, Triki M, Bonnet S, Baccari N, Jimenez-Dominguez G, Covinhes A, Pirot N, Blache P, Yuan R, Győrffy B, Cavaillès V, Lapierre M. RIP140 Represses Intestinal Paneth Cell Differentiation and Interplays with SOX9 Signaling in Colorectal Cancer. Cancers (Basel) 2021; 13:3192. [PMID: 34206767 PMCID: PMC8268705 DOI: 10.3390/cancers13133192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/03/2021] [Accepted: 06/21/2021] [Indexed: 11/23/2022] Open
Abstract
RIP140 is a major transcriptional coregulator of gut homeostasis and tumorigenesis through the regulation of Wnt/APC signaling. Here, we investigated the effect of RIP140 on Paneth cell differentiation and its interplay with the transcription factor SOX9. Using loss of function mouse models, human colon cancer cells, and tumor microarray data sets we evaluated the role of RIP140 in SOX9 expression and activity using RT-qPCR, immunohistochemistry, luciferase reporter assays, and GST-pull down. We first evidence that RIP140 strongly represses the Paneth cell lineage in the intestinal epithelium cells by inhibiting Sox9 expression. We then demonstrate that RIP140 interacts with SOX9 and inhibits its transcriptional activity. Our results reveal that the Wnt signaling pathway exerts an opposite regulation on SOX9 and RIP140. Finally, the levels of expression of RIP140 and SOX9 exhibit a reverse response and prognosis value in human colorectal cancer biopsies. This work highlights an intimate transcriptional cross-talk between RIP140 and SOX9 in intestinal physiopathology.
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Affiliation(s)
- Antoine Gleizes
- IRCM—Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier, CNRS, 208 rue des Apothicaires, F-34298 Montpellier, France; (A.G.); (M.T.); (S.B.); (N.B.); (G.J.-D.); (P.B.); (V.C.)
| | - Mouna Triki
- IRCM—Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier, CNRS, 208 rue des Apothicaires, F-34298 Montpellier, France; (A.G.); (M.T.); (S.B.); (N.B.); (G.J.-D.); (P.B.); (V.C.)
| | - Sandrine Bonnet
- IRCM—Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier, CNRS, 208 rue des Apothicaires, F-34298 Montpellier, France; (A.G.); (M.T.); (S.B.); (N.B.); (G.J.-D.); (P.B.); (V.C.)
| | - Naomi Baccari
- IRCM—Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier, CNRS, 208 rue des Apothicaires, F-34298 Montpellier, France; (A.G.); (M.T.); (S.B.); (N.B.); (G.J.-D.); (P.B.); (V.C.)
| | - Gabriel Jimenez-Dominguez
- IRCM—Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier, CNRS, 208 rue des Apothicaires, F-34298 Montpellier, France; (A.G.); (M.T.); (S.B.); (N.B.); (G.J.-D.); (P.B.); (V.C.)
| | - Aurélie Covinhes
- BioCampus, RHEM, Université de Montpellier, CNRS, INSERM, F-34093 Montpellier, France; (A.C.); (N.P.)
| | - Nelly Pirot
- BioCampus, RHEM, Université de Montpellier, CNRS, INSERM, F-34093 Montpellier, France; (A.C.); (N.P.)
| | - Philippe Blache
- IRCM—Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier, CNRS, 208 rue des Apothicaires, F-34298 Montpellier, France; (A.G.); (M.T.); (S.B.); (N.B.); (G.J.-D.); (P.B.); (V.C.)
| | - Rong Yuan
- Department of Medical Microbiology, Immunology and Cell Biology, School of Medicine, Southern Illinois University, Springfield, IL 62794-9628, USA;
| | - Balázs Győrffy
- Department of Bioinformatics, Semmelweis University, 1094 Budapest, Hungary;
- Lendület Cancer Biomarker Research Group, Research Centre for Natural Sciences, 1117 Budapest, Hungary
| | - Vincent Cavaillès
- IRCM—Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier, CNRS, 208 rue des Apothicaires, F-34298 Montpellier, France; (A.G.); (M.T.); (S.B.); (N.B.); (G.J.-D.); (P.B.); (V.C.)
| | - Marion Lapierre
- IRCM—Institut de Recherche en Cancérologie de Montpellier, INSERM U1194, Université de Montpellier, Institut Régional du Cancer de Montpellier, CNRS, 208 rue des Apothicaires, F-34298 Montpellier, France; (A.G.); (M.T.); (S.B.); (N.B.); (G.J.-D.); (P.B.); (V.C.)
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75
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Rosa I, Marini M, Manetti M. Telocytes: An Emerging Component of Stem Cell Niche Microenvironment. J Histochem Cytochem 2021; 69:795-818. [PMID: 34165348 DOI: 10.1369/00221554211025489] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Telocytes (TCs) are newly identified interstitial cells characterized by thin and long cytoplasmic processes, called telopodes, which exhibit a distinctive moniliform shape and, often, a sinuous trajectory. Telopodes typically organize in intricate networks within the stromal space of most organs, where they communicate with neighboring cells by means of specialized cell-to-cell junctions or shedding extracellular vesicles. Hence, TCs are generally regarded as supporting cells that help in the maintenance of local tissue homeostasis, with an ever-increasing number of studies trying to explore their functions both in physiological and pathological conditions. Notably, TCs appear to be part of stem cell (SC) niches in different organs, including the intestine, skeletal muscle, heart, lung, and skin. Indeed, growing evidence points toward a possible implication of TCs in the regulation of the activity of tissue-resident SCs and in shaping the SC niche microenvironment, thus contributing to tissue renewal and repair. Here, we review how the introduction of TCs into the scientific literature has deepened our knowledge of the stromal architecture focusing on the intestine and skeletal muscle, two organs in which the recently unveiled unique relationship between TCs and SCs is currently in the spotlight as potential target for tissue regenerative purposes.
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Affiliation(s)
- Irene Rosa
- Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Mirca Marini
- Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Mirko Manetti
- Section of Anatomy and Histology, Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
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76
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Zhang L, Tai Y, Zhao C, Ma X, Tang S, Tong H, Tang C, Gao J. Inhibition of cyclooxygenase-2 enhanced intestinal epithelial homeostasis via suppressing β-catenin signalling pathway in experimental liver fibrosis. J Cell Mol Med 2021; 25:7993-8005. [PMID: 34145945 PMCID: PMC8358882 DOI: 10.1111/jcmm.16730] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 05/25/2021] [Accepted: 05/29/2021] [Indexed: 02/05/2023] Open
Abstract
The intestinal barrier dysfunction is crucial for the development of liver fibrosis but can be disturbed by intestinal chronic inflammation characterized with cyclooxygenase‐2 (COX‐2) expression. This study focused on the unknown mechanism by which COX‐2 regulates intestinal epithelial homeostasis in liver fibrosis. The animal models of liver fibrosis induced with TAA were established in rats and in intestinal epithelial–specific COX‐2 knockout mice. The impacts of COX‐2 on intestinal epithelial homeostasis via suppressing β‐catenin signalling pathway were verified pharmacologically and genetically in vivo. A similar assumption was tested in Ls174T cells with goblet cell phenotype in vitro. Firstly, disruption of intestinal epithelial homeostasis in cirrhotic rats was ameliorated by celecoxib, a selective COX‐2 inhibitor. Then, β‐catenin signalling pathway in cirrhotic rats was associated with the activation of COX‐2. Furthermore, intestinal epithelial–specific COX‐2 knockout could suppress β‐catenin signalling pathway and restore the disruption of ileal epithelial homeostasis in cirrhotic mice. Moreover, the effect of COX‐2/PGE2 was dependent on the β‐catenin signalling pathway in Ls174T cells. Therefore, inhibition of COX‐2 may enhance intestinal epithelial homeostasis via suppression of the β‐catenin signalling pathway in liver fibrosis.
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Affiliation(s)
- Linhao Zhang
- Laboratory of Gastroenterology & Hepatology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Yang Tai
- Laboratory of Gastroenterology & Hepatology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Chong Zhao
- Laboratory of Gastroenterology & Hepatology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Xiao Ma
- Laboratory of Gastroenterology & Hepatology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Shihang Tang
- Laboratory of Gastroenterology & Hepatology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Huan Tong
- Laboratory of Gastroenterology & Hepatology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Chengwei Tang
- Laboratory of Gastroenterology & Hepatology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Jinhang Gao
- Laboratory of Gastroenterology & Hepatology, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.,Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
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77
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Secretory Sorcery: Paneth Cell Control of Intestinal Repair and Homeostasis. Cell Mol Gastroenterol Hepatol 2021; 12:1239-1250. [PMID: 34153524 PMCID: PMC8446800 DOI: 10.1016/j.jcmgh.2021.06.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 06/08/2021] [Accepted: 06/09/2021] [Indexed: 12/18/2022]
Abstract
Paneth cells are professional secretory cells that classically play a role in the innate immune system by secreting antimicrobial factors into the lumen to control enteric bacteria. In this role, Paneth cells are able to sense cues from luminal bacteria and respond by changing production of these factors to protect the epithelial barrier. Paneth cells rely on autophagy to regulate their secretory capability and capacity. Disruption of this pathway through mutation of genes, such as Atg16L1, results in decreased Paneth cell function, dysregulated enteric microbiota, decreased barrier integrity, and increased risk of diseases such as Crohn's disease in humans. Upon differentiation Paneth cells migrate downward and intercalate among active intestinal stem cells at the base of small intestinal crypts. This localization puts them in a unique position to interact with active intestinal stem cells, and recent work shows that Paneth cells play a critical role in influencing the intestinal stem cell niche. This review discusses the numerous ways Paneth cells can influence intestinal stem cells and their niche. We also highlight the ways in which Paneth cells can alter cells and other organ systems.
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78
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French R, Pauklin S. Epigenetic regulation of cancer stem cell formation and maintenance. Int J Cancer 2021; 148:2884-2897. [PMID: 33197277 PMCID: PMC8246550 DOI: 10.1002/ijc.33398] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 10/23/2020] [Accepted: 11/11/2020] [Indexed: 12/12/2022]
Abstract
Cancerous tumours contain a rare subset of cells with stem-like properties that are termed cancer stem cells (CSCs). CSCs are defined by their ability to divide both symmetrically and asymmetrically, to initiate new tumour growth and to tolerate the foreign niches required for metastatic dissemination. Accumulating evidence suggests that tumours arise from cells with stem-like properties, the generation of CSCs is therefore likely to be an initiatory event in carcinogenesis. Furthermore, CSCs in established tumours exist in a dynamic and plastic state, with nonstem tumour cells thought to be capable of de-differentiation to CSCs. The regulation of the CSC state both during tumour initiation and within established tumours is a desirable therapeutic target and is mediated by epigenetic factors. In this review, we will explore the epigenetic parallels between induced pluripotency and the generation of CSCs, and discuss how the epigenetic regulation of CSCs opens up novel opportunities for therapeutic intervention.
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Affiliation(s)
- Rhiannon French
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal SciencesUniversity of OxfordOxfordUK
| | - Siim Pauklin
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal SciencesUniversity of OxfordOxfordUK
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79
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Modulation of intestinal stem cell homeostasis by nutrients: a novel therapeutic option for intestinal diseases. Nutr Res Rev 2021; 35:150-158. [PMID: 34100341 DOI: 10.1017/s0954422421000172] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Intestinal stem cells, which are capable of both self-renewal and differentiation to mature cell types, are responsible for maintaining intestinal epithelial homeostasis. Recent evidence indicates that these processes are mediated, in part, through nutritional status in response to diet. Diverse dietary patterns including caloric restriction, fasting, high-fat diets, ketogenic diets and high-carbohydrate diets as well as other nutrients control intestinal stem cell self-renewal and differentiation through nutrient-sensing pathways such as mammalian target of rapamycin and AMP-activated kinase. Herein, we summarise the current understanding of how intestinal stem cells contribute to intestinal epithelial homeostasis and diseases. We also discuss the effects of diet and nutrient-sensing pathways on intestinal stem cell self-renewal and differentiation, as well as their potential application in the prevention and treatment of intestinal diseases.
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80
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Reprogramming cellular identity during intestinal regeneration. Curr Opin Genet Dev 2021; 70:40-47. [PMID: 34062491 DOI: 10.1016/j.gde.2021.05.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/05/2021] [Accepted: 05/10/2021] [Indexed: 12/17/2022]
Abstract
The intestine is a vital organ mediating absorption of nutrients and water. Following tissue damage, the intestine mounts a remarkable regenerative response by reprogramming cellular identity to facilitate reinstatement of homeostasis. Here we review recent advances within intestinal regenerative biology and the emerging concept of fetal-like reprogramming, in which the adult intestinal epithelium transiently enters a repair-associated state reminiscent of ontologically pre-existing stages. We focus on molecular mechanisms governing reprogramming of cellular identity via epithelial-mesenchymal crosstalk, and how novel approaches in organoid technologies enable identification and characterisation of cell-autonomous repair responses within epithelial cells. Transitioning from the single-cell level to tissue scale, we discuss clonal selection following regeneration and associated pathological repurcussions such as cancer and chronic inflammatory diseases.
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81
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Bensemmane L, Squiban C, Demarquay C, Mathieu N, Benderitter M, Le Guen B, Milliat F, Linard C. The stromal vascular fraction mitigates radiation-induced gastrointestinal syndrome in mice. Stem Cell Res Ther 2021; 12:309. [PMID: 34051871 PMCID: PMC8164266 DOI: 10.1186/s13287-021-02373-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 05/09/2021] [Indexed: 01/21/2023] Open
Abstract
Background The intestine is particularly sensitive to moderate-high radiation dose and the development of gastrointestinal syndrome (GIS) leads to the rapid loss of intestinal mucosal integrity, resulting in bacterial infiltration, sepsis that comprise patient survival. There is an urgent need for effective and rapid therapeutic countermeasures. The stromal vascular fraction (SVF) derived from adipose tissue is an easily accessible source of cells with angiogenic, anti-inflammatory and regenerative properties. We studied the therapeutic impact of SVF and its action on the intestinal stem cell compartment. Methods Mice exposed to the abdominal radiation (18 Gy) received a single intravenous injection of stromal vascular fraction (SVF) (2.5 × 106 cells), obtained by enzymatic digestion of inguinal fat tissue, on the day of irradiation. Mortality was evaluated as well as intestinal regeneration by histological analyses and absorption function. Results The SVF treatment limited the weight loss of the mice and inhibited the intestinal permeability and mortality after abdominal irradiation. Histological analyses showed that SVF treatment stimulated the regeneration of the epithelium by promoting numerous enlarged hyperproliferative zones. SVF restored CD24+/lysozyme− and Paneth cell populations in the ISC compartment with the presence of Paneth Ki67+ cells. SVF has an anti-inflammatory effect by repressing pro-inflammatory cytokines, increasing M2 macrophages in the ileum and anti-inflammatory monocyte subtypes CD11b+Ly6clowCX3CR1high in the spleen. Conclusions Through the pleiotropic effects that contribute to limiting radiation-induced lethality, SVF opens up attractive prospects for the treatment of emergency GIS. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-021-02373-y.
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Affiliation(s)
- Lydia Bensemmane
- Institute of Radiological Protection and Nuclear Safety, Laboratory of Medical Radiobiology, Fontenay-aux-Roses, France
| | - Claire Squiban
- Institute of Radiological Protection and Nuclear Safety, Laboratory of Medical Radiobiology, Fontenay-aux-Roses, France
| | - Christelle Demarquay
- Institute of Radiological Protection and Nuclear Safety, Laboratory of Medical Radiobiology, Fontenay-aux-Roses, France
| | - Noëlle Mathieu
- Institute of Radiological Protection and Nuclear Safety, Laboratory of Medical Radiobiology, Fontenay-aux-Roses, France
| | - Marc Benderitter
- Institute of Radiological Protection and Nuclear Safety, Laboratory of Medical Radiobiology, Fontenay-aux-Roses, France
| | | | - Fabien Milliat
- Institute of Radiological Protection and Nuclear Safety, Laboratory of Medical Radiobiology, Fontenay-aux-Roses, France
| | - Christine Linard
- Institute of Radiological Protection and Nuclear Safety, Laboratory of Medical Radiobiology, Fontenay-aux-Roses, France.
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82
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Wang S, Li S, Li Y, Jiang Q, Li X, Wang Y, Han JD, Liu Y, Chen YG. Non-muscle myosin heavy chain 9 maintains intestinal homeostasis by preventing epithelium necroptosis and colitis adenoma formation. Stem Cell Reports 2021; 16:1290-1301. [PMID: 33891868 PMCID: PMC8185465 DOI: 10.1016/j.stemcr.2021.03.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 03/23/2021] [Accepted: 03/24/2021] [Indexed: 12/12/2022] Open
Abstract
Non-muscle myosin IIA plays an important role in cell adhesion, cell migration, and tissue architecture. We previously showed that low activity of the heavy chain of non-muscle myosin II Myh9 is beneficial to LGR5+ intestinal stem cell maintenance. However, the function of Myh9 in adult mouse intestinal epithelium is largely unclear. In this study, we used the inducible Villin-creERT2 knockout approach to delete Myh9 in adult mouse intestinal epithelium and observed that homozygous deletion of Myh9 causes colitis-like morphologic changes in intestine, leads to a high sensitivity to dextran sulfate sodium and promotes colitis-related adenoma formation in the colon. Myh9 deletion disturbs cell junctions and impairs intestinal lumen barrier integrity, promoting the necroptosis of epithelial cells. Consistently, these changes can be partially rescued by Ripk3 knockout. Our results indicate that Myh9 is required for the maintenance of intestinal epithelium integrity and the prevention of cell necroptosis.
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Affiliation(s)
- Shan Wang
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Siqi Li
- Max-Planck Center for Tissue Stem Cell Research and Regenerative Medicine, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, China
| | - Yehua Li
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Quanlong Jiang
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Center for Quantitative Biology, Peking University, Beijing 100871, P.R. China
| | - Xintong Li
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Yalong Wang
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Jing-Dong Han
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Center for Quantitative Biology, Peking University, Beijing 100871, P.R. China
| | - Yuan Liu
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China.
| | - Ye-Guang Chen
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China; Max-Planck Center for Tissue Stem Cell Research and Regenerative Medicine, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, China.
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83
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Sun D, Bai R, Zhou W, Yao Z, Liu Y, Tang S, Ge X, Luo L, Luo C, Hu GF, Sheng J, Xu Z. Angiogenin maintains gut microbe homeostasis by balancing α-Proteobacteria and Lachnospiraceae. Gut 2021; 70:666-676. [PMID: 32843357 PMCID: PMC7904960 DOI: 10.1136/gutjnl-2019-320135] [Citation(s) in RCA: 88] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 06/18/2020] [Accepted: 07/12/2020] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Antimicrobial peptides (AMPs) play essential roles in maintaining gut health and are associated with IBD. This study is to elucidate the effect of angiogenin (ANG), an intestine-secreted AMP, on gut microbiota and its relevance with IBD. DESIGN The effect of ANG on microbiota and its contribution to colitis were evaluated in different colitis models with co-housing and faecal microbiota transplantation. ANG-regulated bacteria were determined by 16S rDNA sequencing and their functions in colitis were analysed by bacterial colonisation. The species-specific antimicrobial activity of ANG and its underlying mechanism were further investigated with microbiological and biochemical methods. ANG level and the key bacteria were characterised in IBD faecal samples. RESULTS ANG regulated microbiota composition and inhibited intestinal inflammation. Specifically, Ang1 deficiency in mice led to a decrease in the protective gut commensal strains of Lachnospiraceae but an increase in the colitogenic strains of α-Proteobacteria. Direct binding of ANG to α-Proteobacteria resulted in lethal disruption of bacterial membrane integrity, and consequently promoted the growth of Lachnospiraceae, which otherwise was antagonised by α-Proteobacteria. Oral administration of ANG1 reversed the dysbiosis and attenuated the severity of colitis in Ang1-deficient mice. The correlation among ANG, the identified bacteria and IBD status was established in patients. CONCLUSION These findings demonstrate a novel role of ANG in shaping gut microbe composition and thus maintaining gut health, suggesting that the ANG-microbiota axis could be developed as a potential preventive and/or therapeutic approach for dysbiosis-related gut diseases.
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Affiliation(s)
- Desen Sun
- Institute of Environmental Medicine, and Cancer Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou, Zhejiang, China
- Zhejiang Laboratory for Systems and Precison Medicine, Zhejiang University Medical Center, Hangzhou, Zhejiang, China
| | - Rongpan Bai
- Institute of Environmental Medicine, and Cancer Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou, Zhejiang, China
| | - Wei Zhou
- Department of General Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Zhengrong Yao
- Institute of Environmental Medicine, and Cancer Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yaxin Liu
- Institute of Environmental Medicine, and Cancer Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou, Zhejiang, China
| | - Shasha Tang
- Department of General Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xiaolong Ge
- Department of General Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Liang Luo
- Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Chi Luo
- Institute of Environmental Medicine, and Cancer Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Bioelectromagnetics Laboratory, Zhejiang University School of Public Health, Hangzhou, Zhejiang, China
| | - Guo-Fu Hu
- Division of Hematology and Oncology, Department of Medicine, Tufts Medical Center, Boston, Massachusetts, USA
| | - Jinghao Sheng
- Institute of Environmental Medicine, and Cancer Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou, Zhejiang, China
- Zhejiang Laboratory for Systems and Precison Medicine, Zhejiang University Medical Center, Hangzhou, Zhejiang, China
- Bioelectromagnetics Laboratory, Zhejiang University School of Public Health, Hangzhou, Zhejiang, China
| | - Zhengping Xu
- Institute of Environmental Medicine, and Cancer Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou, Zhejiang, China
- Zhejiang Laboratory for Systems and Precison Medicine, Zhejiang University Medical Center, Hangzhou, Zhejiang, China
- Bioelectromagnetics Laboratory, Zhejiang University School of Public Health, Hangzhou, Zhejiang, China
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84
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Norkin M, Ordóñez-Morán P, Huelsken J. High-content, targeted RNA-seq screening in organoids for drug discovery in colorectal cancer. Cell Rep 2021; 35:109026. [PMID: 33882314 DOI: 10.1016/j.celrep.2021.109026] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 12/22/2020] [Accepted: 03/31/2021] [Indexed: 12/12/2022] Open
Abstract
Organoids allow the recapitulation of intestinal homeostasis and cancerogenesis in vitro; however, RNA sequencing (RNA-seq)-based methods for drug screens are missing. We develop targeted organoid sequencing (TORNADO-seq), a high-throughput, high-content drug discovery platform that uses targeted RNA-seq to monitor the expression of large gene signatures for the detailed evaluation of cellular phenotypes in organoids. TORNADO-seq is a fast, highly reproducible time- and cost-effective ($5 per sample) method that can probe cell mixtures and their differentiation state in the intestinal system. We apply this method to isolate drugs that enrich for differentiated cell phenotypes and show that these drugs are highly efficacious against cancer compared to wild-type organoids. Furthermore, TORNADO-seq facilitates in-depth insight into the mode of action of these drugs. Our technology can easily be adapted to many other systems and will allow for more systematic, large-scale, and quantitative approaches to study the biology of complex cellular systems.
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Affiliation(s)
- Maxim Norkin
- Swiss Institute for Experimental Cancer Research (ISREC), École Polytechnique Fédérale de Lausanne-(EPFL-SV), 1015 Lausanne, Switzerland
| | - Paloma Ordóñez-Morán
- Department of Cancer and Stem Cells, School of Medicine, Biodiscovery Institute, University of Nottingham, Nottingham NG7 2RD, UK
| | - Joerg Huelsken
- Swiss Institute for Experimental Cancer Research (ISREC), École Polytechnique Fédérale de Lausanne-(EPFL-SV), 1015 Lausanne, Switzerland.
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85
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Chen Y, Ye Z, Seidler U, Tian D, Xiao F. Microenvironmental regulation of intestinal stem cells in the inflamed intestine. Life Sci 2021; 273:119298. [PMID: 33667519 DOI: 10.1016/j.lfs.2021.119298] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 02/14/2021] [Accepted: 02/23/2021] [Indexed: 01/21/2023]
Abstract
The rapid renewal of intestinal epithelium during homeostasis requires balanced proliferation and differentiation of intestinal stem cells (ISCs) at the base of crypt. Upon intestinal inflammation, the vigorous expansion of surviving ISCs is responsible for epithelial repair. However, it is not well depicted how ISCs adapt to the inflammatory conditions within intestinal tissue and support epithelial repair. In the intestinal inflammation, niche cells around ISCs along with their secreted niche factors can facilitate the regeneration of ISCs via niche signals. Additionally, the growth of ISCs can respond to inflammatory cells, inflammatory cytokines, and inflammatory signals. Understanding the adaptive mechanism of ISCs in supporting intestinal epithelial regeneration during inflammation is a focus on the treatment for patients with intestinal inflammation. Here, we aim to present an overview of how ISCs adapt to the acute inflammation to support intestinal repair, with a focus on the roles and interaction of niche signals.
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Affiliation(s)
- Yu Chen
- Department of Gastsroenterology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China
| | - Zhenghao Ye
- Department of Gastroenterology of Hannover Medical School, Hannover, Germany
| | - Ursula Seidler
- Department of Gastroenterology of Hannover Medical School, Hannover, Germany
| | - Dean Tian
- Department of Gastsroenterology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China
| | - Fang Xiao
- Department of Gastsroenterology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China.
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86
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Parihar M, Dodds SG, Hubbard G, Javors MA, Strong R, Hasty P, Sharp ZD. Rapamycin Extends Life Span in Apc Min/+ Colon Cancer FAP Model. Clin Colorectal Cancer 2021; 20:e61-e70. [PMID: 33132009 PMCID: PMC7956131 DOI: 10.1016/j.clcc.2020.08.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 07/17/2020] [Accepted: 08/24/2020] [Indexed: 01/21/2023]
Abstract
BACKGROUND We previously showed that lifelong rapamycin treatment of short-lived ApcMin/+ mice, a model for familial adenomatous polyposis, resulted in a normal lifespan. ApcMin/+ mice develop colon polyps with a low frequency but can be converted to a colon cancer model by dextran sodium sulfate (DSS) treatments (ApcMin/+-DSS model). MATERIALS AND METHODS We asked, what effect would pretreatment of ApcMin/+ mice with chronic rapamycin prior to DSS exposure have on survival and colonic neoplasia? RESULTS Forty-two ppm enteric formulation of rapamycin diet exacerbated the temporary weight loss associated with DSS treatment in both sexes. However, our survival studies showed that chronic rapamycin treatment significantly extended lifespan of ApcMin/+-DSS mice (both sexes) by reductions in colon neoplasia and prevention of anemia. Rapamycin also had prophylactic effects on colon neoplasia induced by azoxymethane and DSS in C57BL/6 males and females. Immunoblot assays showed the expected inhibition of complex 1 of mechanistic or mammalian target of rapamycin (mTORC1) and effectors (S6K→rpS6 and S6K→eEF2K→eEF2) in colon by lifelong rapamycin treatments. To address the question of cell types affected by chronic enteric rapamycin treatment, immunohistochemistry analyses demonstrated that crypt cells had a prominent reduction in rpS6 phosphorylation and increase in eEF2 phosphorylation relative controls. CONCLUSION These data indicate that enteric rapamycin prevents or delays colon neoplasia in ApcMin/+-DSS mice through inhibition of mTORC1 in the crypt cells.
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Affiliation(s)
- Manish Parihar
- Department of Molecular Medicine and Institute of Biotechnology, University of Texas Health, San Antonio, TX
| | - Sherry G Dodds
- Department of Molecular Medicine and Institute of Biotechnology, University of Texas Health, San Antonio, TX
| | - Gene Hubbard
- Barshop Institute for Longevity and Aging Studies, University of Texas Health, San Antonio, TX
| | - Martin A Javors
- Barshop Institute for Longevity and Aging Studies, University of Texas Health, San Antonio, TX; Department of Psychiatry, University of Texas Health, San Antonio, TX
| | - Randy Strong
- Department of Pharmacology, University of Texas Health, San Antonio, TX; San Antonio Geriatric Research, Education, and Clinical Center, University of Texas Health, San Antonio, TX
| | - Paul Hasty
- Department of Molecular Medicine and Institute of Biotechnology, University of Texas Health, San Antonio, TX; Barshop Institute for Longevity and Aging Studies, University of Texas Health, San Antonio, TX; Mays Cancer Center, University of Texas Health, San Antonio, TX.
| | - Zelton Dave Sharp
- Department of Molecular Medicine and Institute of Biotechnology, University of Texas Health, San Antonio, TX; Barshop Institute for Longevity and Aging Studies, University of Texas Health, San Antonio, TX; Mays Cancer Center, University of Texas Health, San Antonio, TX.
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87
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Stem Cell Impairment at the Host-Microbiota Interface in Colorectal Cancer. Cancers (Basel) 2021; 13:cancers13050996. [PMID: 33673612 PMCID: PMC7957811 DOI: 10.3390/cancers13050996] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/20/2021] [Accepted: 02/23/2021] [Indexed: 02/07/2023] Open
Abstract
Colorectal cancer (CRC) initiation is believed to result from the conversion of normal intestinal stem cells (ISCs) into cancer stem cells (CSCs), also known as tumor-initiating cells (TICs). Hence, CRC evolves through the multiple acquisition of well-established genetic and epigenetic alterations with an adenoma-carcinoma sequence progression. Unlike other stem cells elsewhere in the body, ISCs cohabit with the intestinal microbiota, which consists of a diverse community of microorganisms, including bacteria, fungi, and viruses. The gut microbiota communicates closely with ISCs and mounting evidence suggests that there is significant crosstalk between host and microbiota at the ISC niche level. Metagenomic analyses have demonstrated that the host-microbiota mutually beneficial symbiosis existing under physiologic conditions is lost during a state of pathological microbial imbalance due to the alteration of microbiota composition (dysbiosis) and/or the genetic susceptibility of the host. The complex interaction between CRC and microbiota is at the forefront of the current CRC research, and there is growing attention on a possible role of the gut microbiome in the pathogenesis of CRC through ISC niche impairment. Here we primarily review the most recent findings on the molecular mechanism underlying the complex interplay between gut microbiota and ISCs, revealing a possible key role of microbiota in the aberrant reprogramming of CSCs in the initiation of CRC. We also discuss recent advances in OMICS approaches and single-cell analyses to explore the relationship between gut microbiota and ISC/CSC niche biology leading to a desirable implementation of the current precision medicine approaches.
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88
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Sphyris N, Hodder MC, Sansom OJ. Subversion of Niche-Signalling Pathways in Colorectal Cancer: What Makes and Breaks the Intestinal Stem Cell. Cancers (Basel) 2021; 13:1000. [PMID: 33673710 PMCID: PMC7957493 DOI: 10.3390/cancers13051000] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/15/2021] [Accepted: 02/17/2021] [Indexed: 12/12/2022] Open
Abstract
The intestinal epithelium fulfils pleiotropic functions in nutrient uptake, waste elimination, and immune surveillance while also forming a barrier against luminal toxins and gut-resident microbiota. Incessantly barraged by extraneous stresses, the intestine must continuously replenish its epithelial lining and regenerate the full gamut of specialized cell types that underpin its functions. Homeostatic remodelling is orchestrated by the intestinal stem cell (ISC) niche: a convergence of epithelial- and stromal-derived cues, which maintains ISCs in a multipotent state. Following demise of homeostatic ISCs post injury, plasticity is pervasive among multiple populations of reserve stem-like cells, lineage-committed progenitors, and/or fully differentiated cell types, all of which can contribute to regeneration and repair. Failure to restore the epithelial barrier risks seepage of toxic luminal contents, resulting in inflammation and likely predisposing to tumour formation. Here, we explore how homeostatic niche-signalling pathways are subverted in tumorigenesis, enabling ISCs to gain autonomy from niche restraints ("ISC emancipation") and transform into cancer stem cells capable of driving tumour initiation, progression, and therapy resistance. We further consider the implications of the pervasive plasticity of the intestinal epithelium for the trajectory of colorectal cancer, the emergence of distinct molecular subtypes, the propensity to metastasize, and the development of effective therapeutic strategies.
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Affiliation(s)
- Nathalie Sphyris
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow G61 1BD, UK; (N.S.); (M.C.H.)
| | - Michael C. Hodder
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow G61 1BD, UK; (N.S.); (M.C.H.)
- Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Glasgow G61 1QH, UK
| | - Owen J. Sansom
- Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Glasgow G61 1BD, UK; (N.S.); (M.C.H.)
- Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Glasgow G61 1QH, UK
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89
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Yue D, Wang Z, Yang Y, Hu Z, Luo G, Wang F. EZH2 inhibitor GSK343 inhibits sepsis-induced intestinal disorders. Exp Ther Med 2021; 21:437. [PMID: 33747174 PMCID: PMC7967880 DOI: 10.3892/etm.2021.9854] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 12/04/2020] [Indexed: 12/29/2022] Open
Abstract
Enhancer of zeste homolog 2 (EZH2) is positively associated with poor clinical outcomes in a number of aggressive tumors. Recent studies have demonstrated that inhibition of EZH2 also suppressed the inflammatory response during sepsis. The present study aimed to investigate whether an inhibitor of EZH2, GSK343, could protect the intestine against sepsis-induced injury in vivo. Mice underwent cecal ligation and perforation (CLP) to induce sepsis and were assigned into three groups: Sham, CLP and CLP + GSK343. For GSK343 treatment, the septic mice were intravenously injected with GSK343 at 6 h post-CLP. The results indicated that EZH2 was highly expressed while tight junction (TJ) proteins ZO-1, occludin and claudin-1 expression was reduced in the intestinal tissue of mice subjected to CLP compared with the sham group. CLP operation also caused intestinal pathological injury and the production of inflammatory cytokines including TNF-α, IL-1β and IL-6 in both serum and intestinal tissues. Meanwhile, CLP induced cell apoptosis of intestinal tissue based on the increased number of apoptotic cells, reduced expression of Bcl-2 and higher expression of caspase-3 and Bax. However, the presence of GSK343 partially rescued intestinal pathological injury, reduced the level of inflammatory cytokines, repressed cell apoptosis and promoted TJ protein expression. Finally, the decreased number of Paneth cells caused by CLP operation was reversed by GSK343 treatment. In conclusion, the results of the present study demonstrated that GSK343 could protect the intestine against sepsis-induced injury in vivo. Inhibition of EZH2 may provide a therapeutic approach for intestinal dysfunction during sepsis.
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Affiliation(s)
- Dongyou Yue
- Department of Emergency, The First People's Hospital of Chenzhou City, Chenzhou, Hunan 423000, P.R. China
| | - Zhiying Wang
- Department of Neurology, The First People's Hospital of Chenzhou City, Chenzhou, Hunan 423000, P.R. China
| | - Yongan Yang
- Department of Emergency, The First People's Hospital of Chenzhou City, Chenzhou, Hunan 423000, P.R. China
| | - Zhenjun Hu
- Department of Emergency, The First People's Hospital of Chenzhou City, Chenzhou, Hunan 423000, P.R. China
| | - Ganping Luo
- Department of Emergency, The First People's Hospital of Chenzhou City, Chenzhou, Hunan 423000, P.R. China
| | - Fu Wang
- Department of Critical Care Medicine, Zhangye Second People's Hospital, Zhangye, Gansu 734000, P.R. China
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90
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Iftekhar A, Sigal M. Defence and adaptation mechanisms of the intestinal epithelium upon infection. Int J Med Microbiol 2021; 311:151486. [PMID: 33684844 DOI: 10.1016/j.ijmm.2021.151486] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 01/15/2021] [Accepted: 02/23/2021] [Indexed: 12/12/2022] Open
Abstract
The intestinal epithelium is a monolayer of polarized columnar cells that act as a border between the host and its environment and are the first line of defence against the luminal microbes. In addition to providing a physical barrier, the epithelium possesses a multitude of active mechanisms to fight invading pathogens and regulate the composition and spatial distribution of commensals. The different epithelial cell types have unique functions in this context, and crosstalk with the immune system further modulates their intricate antimicrobial responses. The epithelium is organized into clonal crypt units with a high cellular turnover that is driven by stem cells located at the base. There is increasing evidence that this anatomical organization, the stem cell turnover, and the lineage determination processes are essential for barrier maintenance. These processes can be modulated by microbes directly or by the immune responses to enteric pathogens, resulting in a rapid and efficient adaptation of the epithelium to environmental perturbations, injuries, and infections. Here we discuss the complex host-microbial interactions that shape the mucosa and how the epithelium maintains and re-establishes homeostasis after infection.
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Affiliation(s)
- Amina Iftekhar
- Department of Molecular Biology, Max Planck Institute for Infection Biology, Berlin, Germany
| | - Michael Sigal
- Department of Molecular Biology, Max Planck Institute for Infection Biology, Berlin, Germany; Department of Internal Medicine, Gastroenterology and Hepatology, Charité University Medicine, Berlin, Germany; Berlin Institute for Medical Systems Biology, Max Delbrück Center for Molecular Medicine, Berlin, Germany.
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91
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Plasticity in Colorectal Cancer: Why Cancer Cells Differentiate. Cancers (Basel) 2021; 13:cancers13040918. [PMID: 33671641 PMCID: PMC7926445 DOI: 10.3390/cancers13040918] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/09/2021] [Accepted: 02/17/2021] [Indexed: 12/13/2022] Open
Abstract
Simple Summary The cancer stem cell hypothesis postulates that tumors arise from a few cells with self-renewal capabilities. The identification of stem cell markers, the development of mouse and human tumor organoids and their application in mouse models, allowing lineage tracing, helped to better understand the cancer stem cell model as well as the role of differentiation. This review aims at providing insights on the interplay between cancer stem cells and differentiated cells, as well as the importance of plasticity between the two states. Abstract The cancer stem cell hypothesis poses that the bulk of differentiated cells are non-tumorigenic and only a subset of cells with self-renewal capabilities drive tumor initiation and progression. This means that differentiation could have a tumor-suppressive effect. Accumulating evidence shows, however, that in some solid tumors, like colorectal cancer, such a hierarchical organization is necessary. The identification of Lgr5 as a reliable marker of normal intestinal epithelial stem cells, together with strategies to trace cell lineages within tumors and the possibility to selectively ablate these cells, have proven the relevance of Lgr5+ cells for cancer progression. On the contrary, the role of Lgr5− cells during this process remains largely unknown. In this review, we explore available evidence pointing towards possible selective advantages of cancer cells organized hierarchically and its resulting cell heterogeneity. Clear evidence of plasticity between cell states, in which loss of Lgr5+ cells can be replenished by dedifferentiation of Lgr5− cells, shows that cell hierarchies could grant adaptive traits to tumors upon changing selective pressures, including those derived from anticancer therapy, as well as during tumor progression to metastasis.
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92
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Hageman JH, Heinz MC, Kretzschmar K, van der Vaart J, Clevers H, Snippert HJG. Intestinal Regeneration: Regulation by the Microenvironment. Dev Cell 2021; 54:435-446. [PMID: 32841594 DOI: 10.1016/j.devcel.2020.07.009] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/18/2020] [Accepted: 07/13/2020] [Indexed: 01/05/2023]
Abstract
Damage to the intestinal stem cell niche can result from mechanical stress, infections, chronic inflammation or cytotoxic therapies. Progenitor cells can compensate for insults to the stem cell population through dedifferentiation. The microenvironment modulates this regenerative response by influencing the activity of signaling pathways, including Wnt, Notch, and YAP/TAZ. For instance, mesenchymal cells and immune cells become more abundant after damage and secrete signaling molecules that promote the regenerative process. Furthermore, regeneration is influenced by the nutritional state, microbiome, and extracellular matrix. Here, we review how all these components cooperate to restore epithelial homeostasis in the intestine after injury.
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Affiliation(s)
- Joris H Hageman
- Molecular Cancer Research, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, the Netherlands; Oncode Institute, 3521 AL Utrecht, the Netherlands
| | - Maria C Heinz
- Molecular Cancer Research, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, the Netherlands; Oncode Institute, 3521 AL Utrecht, the Netherlands
| | - Kai Kretzschmar
- Oncode Institute, 3521 AL Utrecht, the Netherlands; Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and UMC Utrecht, 3584 CT Utrecht, the Netherlands; Mildred-Scheel Early Career Centre (MSNZ) for Cancer Research, University Hospital Würzburg, 97080 Würzburg, Germany
| | - Jelte van der Vaart
- Oncode Institute, 3521 AL Utrecht, the Netherlands; Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and UMC Utrecht, 3584 CT Utrecht, the Netherlands
| | - Hans Clevers
- Oncode Institute, 3521 AL Utrecht, the Netherlands; Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences (KNAW) and UMC Utrecht, 3584 CT Utrecht, the Netherlands; Princess Máxima Center for Pediatric Oncology, 3584 CS Utrecht, the Netherlands
| | - Hugo J G Snippert
- Molecular Cancer Research, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht University, 3584 CX Utrecht, the Netherlands; Oncode Institute, 3521 AL Utrecht, the Netherlands.
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Quintero M, Liu S, Xia Y, Huang Y, Zou Y, Li G, Hu L, Singh N, Blumberg R, Cai Y, Xu H, Li H. Cdk5rap3 is essential for intestinal Paneth cell development and maintenance. Cell Death Dis 2021; 12:131. [PMID: 33504792 PMCID: PMC7841144 DOI: 10.1038/s41419-021-03401-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 12/30/2020] [Accepted: 01/04/2021] [Indexed: 02/07/2023]
Abstract
Intestinal Paneth cells are professional exocrine cells that play crucial roles in maintenance of homeostatic microbiome, modulation of mucosal immunity, and support for stem cell self-renewal. Dysfunction of these cells may lead to the pathogenesis of human diseases such as inflammatory bowel disease (IBD). Cdk5 activator binding protein Cdk5rap3 (also known as C53 and LZAP) was originally identified as a binding protein of Cdk5 activator p35. Although previous studies have indicated its involvement in a wide range of signaling pathways, the physiological function of Cdk5rap3 remains largely undefined. In this study, we found that Cdk5rap3 deficiency resulted in very early embryonic lethality, indicating its indispensable role in embryogenesis. To further investigate its function in the adult tissues and organs, we generated intestinal epithelial cell (IEC)-specific knockout mouse model to examine its role in intestinal development and tissue homeostasis. IEC-specific deletion of Cdk5rap3 led to nearly complete loss of Paneth cells and increased susceptibility to experimentally induced colitis. Interestingly, Cdk5rap3 deficiency resulted in downregulation of key transcription factors Gfi1 and Sox9, indicating its crucial role in Paneth cell fate specification. Furthermore, Cdk5rap3 is highly expressed in mature Paneth cells. Paneth cell-specific knockout of Cdk5rap3 caused partial loss of Paneth cells, while inducible acute deletion of Cdk5rap3 resulted in disassembly of the rough endoplasmic reticulum (RER) and abnormal zymogen granules in the mature Paneth cells, as well as loss of Paneth cells. Together, our results provide definitive evidence for the essential role of Cdk5rap3 in Paneth cell development and maintenance.
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Affiliation(s)
- Michaela Quintero
- Department of Biochemistry & Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Siyang Liu
- Department of Biochemistry & Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Yanhua Xia
- Faculty of Basic Medicine, Nanchang University, Nanchang, Jiangxi, China
| | - Yonghong Huang
- Faculty of Basic Medicine, Nanchang University, Nanchang, Jiangxi, China
| | - Yi Zou
- Department of Metabolic Endocrinology, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Ge Li
- Department of Pathology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Ling Hu
- Department of Metabolic Endocrinology, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Nagendra Singh
- Department of Biochemistry & Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Richard Blumberg
- Division of Gastroenterology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Yafei Cai
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Hong Xu
- Faculty of Basic Medicine, Nanchang University, Nanchang, Jiangxi, China
| | - Honglin Li
- Department of Biochemistry & Molecular Biology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA.
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A centric view of JAK/STAT5 in intestinal homeostasis, infection, and inflammation. Cytokine 2021; 139:155392. [PMID: 33482575 PMCID: PMC8276772 DOI: 10.1016/j.cyto.2020.155392] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/25/2020] [Accepted: 11/26/2020] [Indexed: 02/07/2023]
Abstract
Cytokines, growth factors or hormones take action through the JAK/STAT5 signaling pathway, which plays a critical role in regulating the intestinal response to infection and inflammation. However, the way in which STAT5 regulates intestinal epithelial compartment is largely ignored due to the lack of genetic tools for proper exploration and because the two STAT5 transcription factors (STAT5A and STAT5B) have some redundant but also distinct functions. In this review article, by focusing on STAT5 functions in the intestinal undifferentiated and differentiated epithelia, we discuss major advances of the growth factor/cytokine-JAK/STAT5 research in view of intestinal mucosal inflammation and immunity. We highlight the gap in the research of the intestinal STAT5 signaling to anticipate the gastrointestinal explorative insights. Furthermore, we address the critical questions to illuminate how STAT5 signaling influences intestinal epithelial cell differentiation and stem cell regeneration during homeostasis and injury. Overall, our article provides a centric view of the relevance of the relationship between chronic inflammatory diseases and JAK/STAT5 pathway and it also gives an example of how chronic infection and inflammation pirate STAT5 signaling to worsen intestinal injuries. Importantly, our review suggests how to protect a wound healing from gastrointestinal diseases by modulating intestinal STAT5.
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95
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Shieh J, Kobayashi S, Yang VW. Aberrant differentiation of intestinal stem cells due to inflammation-induced mitochondrial dysfunction predicts postoperative recurrence of Crohn's disease. ACTA ACUST UNITED AC 2021; 3. [PMID: 33447825 PMCID: PMC7806188 DOI: 10.21037/dmr-2020-15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Jason Shieh
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York, USA
| | - Soma Kobayashi
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York, USA
| | - Vincent W Yang
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York, USA
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96
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Enteropathogenic Infections: Organoids Go Bacterial. Stem Cells Int 2021; 2021:8847804. [PMID: 33505475 PMCID: PMC7810537 DOI: 10.1155/2021/8847804] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 11/06/2020] [Accepted: 12/16/2020] [Indexed: 12/13/2022] Open
Abstract
Enteric infections represent a major health care challenge which is particularly prevalent in countries with restricted access to clean water and sanitation and lacking personal hygiene precautions, altogether facilitating fecal-oral transmission of a heterogeneous spectrum of enteropathogenic microorganisms. Among these, bacterial species are responsible for a considerable proportion of illnesses, hospitalizations, and fatal cases, all of which have been continuously contributing to ignite researchers' interest in further exploring their individual pathogenicity. Beyond the universally accepted animal models, intestinal organoids are increasingly valued for their ability to mimic key architectural and physiologic features of the native intestinal mucosa. As a consequence, they are regarded as the most versatile and naturalistic in vitro model of the gut, allowing monitoring of adherence, invasion, intracellular trafficking, and propagation as well as repurposing components of the host cell equipment. At the same time, infected intestinal organoids allow close characterization of the host epithelium's immune response to enteropathogens. In this review, (i) we provide a profound update on intestinal organoid-based tissue engineering, (ii) we report the latest pathophysiological findings defining the infected intestinal organoids, and (iii) we discuss the advantages and limitations of this in vitro model.
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97
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Urbauer E, Rath E, Haller D. Mitochondrial Metabolism in the Intestinal Stem Cell Niche-Sensing and Signaling in Health and Disease. Front Cell Dev Biol 2021; 8:602814. [PMID: 33469536 PMCID: PMC7813778 DOI: 10.3389/fcell.2020.602814] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/16/2020] [Indexed: 12/11/2022] Open
Abstract
Mitochondrial metabolism, dynamics, and stress responses in the intestinal stem cell niche play a pivotal role in regulating intestinal epithelial cell homeostasis, including self-renewal and differentiation. In addition, mitochondria are increasingly recognized for their involvement in sensing the metabolic environment and their capability of integrating host and microbial-derived signals. Gastrointestinal diseases such as inflammatory bowel diseases and colorectal cancer are characterized by alterations of intestinal stemness, the microbial milieu, and mitochondrial metabolism. Thus, mitochondrial function emerges at the interface of determining health and disease, and failure to adapt mitochondrial function to environmental cues potentially results in aberrant tissue responses. A mechanistic understanding of the underlying role of mitochondrial fitness in intestinal pathologies is still in its infancy, and therapies targeting mitochondrial (dys)function are currently lacking. This review discusses mitochondrial signaling and metabolism in intestinal stem cells and Paneth cells as critical junction translating host- and microbe-derived signals into epithelial responses. Consequently, we propose mitochondrial fitness as a hallmark for intestinal epithelial cell plasticity, determining the regenerative capacity of the epithelium.
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Affiliation(s)
- Elisabeth Urbauer
- Chair of Nutrition and Immunology, Technische Universität München, Freising-Weihenstephan, Germany
| | - Eva Rath
- Chair of Nutrition and Immunology, Technische Universität München, Freising-Weihenstephan, Germany
| | - Dirk Haller
- Chair of Nutrition and Immunology, Technische Universität München, Freising-Weihenstephan, Germany.,ZIEL Institute for Food & Health, Technische Universität München, Munich, Germany
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98
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Zhu G, Hu J, Xi R. The cellular niche for intestinal stem cells: a team effort. CELL REGENERATION 2021; 10:1. [PMID: 33385259 PMCID: PMC7775856 DOI: 10.1186/s13619-020-00061-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 09/07/2020] [Indexed: 12/31/2022]
Abstract
The rapidly self-renewing epithelium in the mammalian intestine is maintained by multipotent intestinal stem cells (ISCs) located at the bottom of the intestinal crypt that are interspersed with Paneth cells in the small intestine and Paneth-like cells in the colon. The ISC compartment is also closely associated with a sub-epithelial compartment that contains multiple types of mesenchymal stromal cells. With the advances in single cell and gene editing technologies, rapid progress has been made for the identification and characterization of the cellular components of the niche microenvironment that is essential for self-renewal and differentiation of ISCs. It has become increasingly clear that a heterogeneous population of mesenchymal cells as well as the Paneth cells collectively provide multiple secreted niche signals to promote ISC self-renewal. Here we review and summarize recent advances in the regulation of ISCs with a main focus on the definition of niche cells that sustain ISCs.
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Affiliation(s)
- Guoli Zhu
- National Institute of Biological Sciences, No. 7 Science Park Road, Zhongguancun Life Science Park, Beijing, 102206, China
| | - Jiulong Hu
- National Institute of Biological Sciences, No. 7 Science Park Road, Zhongguancun Life Science Park, Beijing, 102206, China.,School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Rongwen Xi
- National Institute of Biological Sciences, No. 7 Science Park Road, Zhongguancun Life Science Park, Beijing, 102206, China. .,Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing, China.
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99
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Sprangers J, Zaalberg IC, Maurice MM. Organoid-based modeling of intestinal development, regeneration, and repair. Cell Death Differ 2021; 28:95-107. [PMID: 33208888 PMCID: PMC7852609 DOI: 10.1038/s41418-020-00665-z] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 10/28/2020] [Accepted: 10/29/2020] [Indexed: 02/07/2023] Open
Abstract
The intestinal epithelium harbors a remarkable adaptability to undergo injury-induced repair. A key part of the regenerative response is the transient reprogramming of epithelial cells into a fetal-like state, which drives uniform proliferation, tissue remodeling, and subsequent restoration of the homeostatic state. In this review, we discuss how Wnt and YAP signaling pathways control the intestinal repair response and the transitioning of cell states, in comparison with the process of intestinal development. Furthermore, we highlight how organoid-based applications have contributed to the characterization of the mechanistic principles and key players that guide these developmental and regenerative events.
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Affiliation(s)
- Joep Sprangers
- Cell Biology, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
- Oncode Institute, Utrecht, The Netherlands
| | - Irene C Zaalberg
- Cell Biology, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands
- Oncode Institute, Utrecht, The Netherlands
| | - Madelon M Maurice
- Cell Biology, Center for Molecular Medicine, University Medical Center Utrecht, Utrecht, The Netherlands.
- Oncode Institute, Utrecht, The Netherlands.
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100
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Tan SH, Phuah P, Tan LT, Yada S, Goh J, Tomaz LB, Chua M, Wong E, Lee B, Barker N. A constant pool of Lgr5 + intestinal stem cells is required for intestinal homeostasis. Cell Rep 2021; 34:108633. [PMID: 33503423 DOI: 10.1016/j.celrep.2020.108633] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 09/09/2020] [Accepted: 12/21/2020] [Indexed: 12/30/2022] Open
Abstract
Lgr5+ crypt base columnar cells, the operational intestinal stem cells (ISCs), are thought to be dispensable for small intestinal (SI) homeostasis. Using a Lgr5-2A-DTR (diphtheria toxin receptor) model, which ablates Lgr5+ cells with near-complete efficiency and retains endogenous levels of Lgr5 expression, we show that persistent depletion of Lgr5+ ISCs in fact compromises SI epithelial integrity and reduces epithelial turnover in vivo. In vitro, Lgr5-2A-DTR SI organoids are unable to establish or survive when Lgr5+ ISCs are continuously eliminated by adding DT to the media. However, transient exposure to DT at the start of culture allows organoids to form, and the rate of outgrowth reduces with the increasing length of DT presence. Our results indicate that intestinal homeostasis requires a constant pool of Lgr5+ ISCs, which is supplied by rapidly reprogrammed non-Lgr5+ crypt populations when preexisting Lgr5+ ISCs are ablated.
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Affiliation(s)
- Si Hui Tan
- A(∗)STAR Institute of Medical Biology, Singapore, Singapore; A(∗)STAR Institute of Molecular and Cell Biology, Singapore, Singapore
| | - Phyllis Phuah
- A(∗)STAR Institute of Medical Biology, Singapore, Singapore; Section of Endocrinology & Investigative Medicine, Department of Metabolism, Digestion, and Reproduction, Imperial College London, London, UK
| | - Liang Thing Tan
- A(∗)STAR Institute of Medical Biology, Singapore, Singapore; A(∗)STAR Institute of Molecular and Cell Biology, Singapore, Singapore
| | - Swathi Yada
- A(∗)STAR Institute of Medical Biology, Singapore, Singapore; A(∗)STAR Institute of Molecular and Cell Biology, Singapore, Singapore
| | - Jasmine Goh
- A(∗)STAR Institute of Medical Biology, Singapore, Singapore; Cancer Science Institute, Singapore, Singapore
| | - Lucian B Tomaz
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Magdalene Chua
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Esther Wong
- A(∗)STAR Institute of Medical Biology, Singapore, Singapore; A(∗)STAR Institute of Molecular and Cell Biology, Singapore, Singapore
| | - Bernett Lee
- A(∗)STAR Singapore Immunology Network, Singapore, Singapore
| | - Nick Barker
- A(∗)STAR Institute of Medical Biology, Singapore, Singapore; A(∗)STAR Institute of Molecular and Cell Biology, Singapore, Singapore; Division of Epithelial Stem Cell Biology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan.
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