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Orzechowska-Licari EJ, Bialkowska AB, Yang VW. Sonic Hedgehog and WNT Signaling Regulate a Positive Feedback Loop Between Intestinal Epithelial and Stromal Cells to Promote Epithelial Regeneration. Cell Mol Gastroenterol Hepatol 2023; 16:607-642. [PMID: 37481204 PMCID: PMC10470419 DOI: 10.1016/j.jcmgh.2023.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 07/06/2023] [Accepted: 07/10/2023] [Indexed: 07/24/2023]
Abstract
BACKGROUND AND AIMS Active intestinal stem cells are prone to injury by ionizing radiation. We previously showed that upon radiation-induced injury, normally quiescent reserve intestinal stem cells (rISCs) (marked by BMI1) are activated by Musashi-1 (MSI1) and exit from the quiescent state to regenerate the intestinal epithelium. This study aims to further establish the mechanism that regulates activation of Bmi1-CreER;Rosa26eYFP (Bmi1-CreER) rISCs following γ radiation-induced injury. METHODS Bmi1-CreER mice were treated with tamoxifen to initiate lineage tracing of BMI1 (eYFP+) cells and exposed to 12 Gy of total body γ irradiation or sham. Intestinal tissues were collected and analyzed by immunofluorescence, Western blot, reverse-transcription quantitative polymerase chain reaction, enzyme-linked immunosorbent assay, and chromatin immunoprecipitation real-time polymerase chain reaction. RESULTS After irradiation, increased expression of Msi1 in eYFP+ cells was accompanied by increased expression of Axin2, a WNT marker. Promoter studies of the Msi1 gene indicated that Msi1 is a WNT target gene. Coculture of stromal cells isolated from irradiated mice stimulated Bmi1-CreER-derived organoid regeneration more effectively than those from sham mice. Expression of WNT ligands, including Wnt2b, Wnt4, Wnt5a, and Rspo3, was increased in irradiated stromal cells compared with sham-treated stromal cells. Moreover, expression of the Sonic hedgehog (SHH) effector Gli1 was increased in stromal cells from irradiated mice. This was correlated with an increased expression of SHH in epithelial cells postirradiation, indicating epithelial-stromal interaction. Finally, preinjury treatment with SHH inhibitor cyclopamine significantly reduced intestinal epithelial regeneration and Msi1 expression postirradiation. CONCLUSIONS Upon ionizing radiation-induced injury, intestinal epithelial cells increase SHH secretion, stimulating stromal cells to secrete WNT ligands. WNT activators induce Msi1 expression in the Bmi1-CreER cells. This stromal-epithelial interaction leads to Bmi1-CreER rISCs induction and epithelial regeneration.
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Affiliation(s)
| | - Agnieszka B Bialkowska
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York.
| | - Vincent W Yang
- Department of Medicine, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York; Department of Physiology and Biophysics, Renaissance School of Medicine at Stony Brook University, Stony Brook, New York.
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2
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Gu NX, Guo YR, Lin SE, Wang YH, Lin IH, Chen YF, Yen Y. Frizzled 7 modulates goblet and Paneth cell fate, and maintains homeostasis in mouse intestine. Development 2023; 150:287020. [PMID: 36691900 PMCID: PMC10112897 DOI: 10.1242/dev.200932] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 01/17/2023] [Indexed: 01/25/2023]
Abstract
Intestinal homeostasis depends on interactions between the intestinal epithelium, the immune system and the microbiota. Because of these complicated connections, there are many problems that need to be solved. Current research has indicated that genes targeted by Wnt signaling are responsible for controlling intestinal stem cell fate and for modulating intestinal homeostasis. Our data show that loss of frizzled 7 (Fzd7), an important element in Wnt signaling, interrupts the differentiation of mouse intestinal stem cells into absorptive progenitors instead of secretory progenitors (precursors of goblet and Paneth cells). The alteration in canonical Wnt and Notch signaling pathways interrupts epithelial homeostasis, resulting in a decrease in physical protection in the intestine. Several phenotypes in our Fzd7-deleted model were similar to the features of enterocolitis, such as shortened intestines, decreased numbers of goblet cells and Paneth cells, and severe inflammation. Additionally, loss of Fzd7 exacerbated the defects in a chemical-induced colitis model and could initiate tumorigenesis. These findings may provide important information for the discovery of efficient therapeutic methods to treat enterocolitis and related cancers in the intestines.
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Affiliation(s)
- Nai-Xin Gu
- The PhD Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University and Academia Sinica, Taipei 11529, Taiwan
| | - Yu-Ru Guo
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
| | - Sey-En Lin
- Department of Anatomic Pathology, New Taipei Municipal Tucheng Hospital, Chang Gung Memorial Hospital and Chang Gung University, New Taipei City 236017, Taiwan
| | - Yen-Hsin Wang
- Graduate Institute of Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
| | - I-Hsuan Lin
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Yi-Fan Chen
- The PhD Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University and Academia Sinica, Taipei 11529, Taiwan
- Graduate Institute of Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
- Master Program in Clinical Genomics and Proteomics, School of Pharmacy, Taipei Medical University, Taipei 11031, Taiwan
- International Ph.D. Program for Translational Science, College of Medical Science and Technology, Taipei Medical University, Taipei 11031 , Taiwan
| | - Yun Yen
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Ph.D. Program for Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
- Cancer Center, Taipei Municipal WanFang Hospital, Taipei 116081 , Taiwan
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3
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Jasso GJ, Jaiswal A, Varma M, Laszewski T, Grauel A, Omar A, Silva N, Dranoff G, Porter JA, Mansfield K, Cremasco V, Regev A, Xavier RJ, Graham DB. Colon stroma mediates an inflammation-driven fibroblastic response controlling matrix remodeling and healing. PLoS Biol 2022; 20:e3001532. [PMID: 35085231 PMCID: PMC8824371 DOI: 10.1371/journal.pbio.3001532] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 02/08/2022] [Accepted: 01/07/2022] [Indexed: 12/22/2022] Open
Abstract
Chronic inflammation is often associated with the development of tissue fibrosis, but how mesenchymal cell responses dictate pathological fibrosis versus resolution and healing remains unclear. Defining stromal heterogeneity and identifying molecular circuits driving extracellular matrix deposition and remodeling stands to illuminate the relationship between inflammation, fibrosis, and healing. We performed single-cell RNA-sequencing of colon-derived stromal cells and identified distinct classes of fibroblasts with gene signatures that are differentially regulated by chronic inflammation, including IL-11-producing inflammatory fibroblasts. We further identify a transcriptional program associated with trans-differentiation of mucosa-associated fibroblasts and define a functional gene signature associated with matrix deposition and remodeling in the inflamed colon. Our analysis supports a critical role for the metalloprotease Adamdec1 at the interface between tissue remodeling and healing during colitis, demonstrating its requirement for colon epithelial integrity. These findings provide mechanistic insight into how inflammation perturbs stromal cell behaviors to drive fibroblastic responses controlling mucosal matrix remodeling and healing.
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Affiliation(s)
- Guadalupe J. Jasso
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America
- Harvard Medical School, Boston, Massachusetts, United States of America
| | - Alok Jaiswal
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America
| | - Mukund Varma
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America
| | - Tyler Laszewski
- Novartis Institutes for BioMedical Research, Cambridge, Massachusetts, United States of America
| | - Angelo Grauel
- Novartis Institutes for BioMedical Research, Cambridge, Massachusetts, United States of America
| | - Abdifatah Omar
- Center for Computational and Integrative Biology, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Nilsa Silva
- Novartis Institutes for BioMedical Research, Cambridge, Massachusetts, United States of America
| | - Glenn Dranoff
- Novartis Institutes for BioMedical Research, Cambridge, Massachusetts, United States of America
| | - Jeffrey A. Porter
- Novartis Institutes for BioMedical Research, Cambridge, Massachusetts, United States of America
| | - Keith Mansfield
- Novartis Institutes for BioMedical Research, Cambridge, Massachusetts, United States of America
| | - Viviana Cremasco
- Novartis Institutes for BioMedical Research, Cambridge, Massachusetts, United States of America
| | - Aviv Regev
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America
- Howard Hughes Medical Institute and David H. Koch Institute for Integrative Cancer Research, Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Ramnik J. Xavier
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America
- Harvard Medical School, Boston, Massachusetts, United States of America
- Center for Computational and Integrative Biology, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
- Center for Microbiome Informatics and Therapeutics, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
- Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America
- * E-mail: (RJX); (DBG)
| | - Daniel B. Graham
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America
- Harvard Medical School, Boston, Massachusetts, United States of America
- Center for Computational and Integrative Biology, Massachusetts General Hospital, Boston, Massachusetts, United States of America
- Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
- Center for Microbiome Informatics and Therapeutics, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
- * E-mail: (RJX); (DBG)
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Jatko JT, Darling CL, Kellett MP, Bain LJ. Arsenic exposure in drinking water reduces Lgr5 and secretory cell marker gene expression in mouse intestines. Toxicol Appl Pharmacol 2021; 422:115561. [PMID: 33957193 DOI: 10.1016/j.taap.2021.115561] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 02/28/2021] [Accepted: 04/30/2021] [Indexed: 12/12/2022]
Abstract
Arsenic is a global health concern that causes toxicity through ingestion of contaminated water and food. In vitro studies suggest that arsenic reduces stem and progenitor cell differentiation. Thus, this study determined if arsenic disrupted intestinal stem cell (ISC) differentiation, thereby altering the number, location, and/or function of intestinal epithelial cells. Adult male C57BL/6 mice were exposed to 0 or 100 ppb sodium arsenite (AsIII) through drinking water for 5 weeks. Duodenal sections were collected to assess changes in morphology, proliferation, and cell types. qPCR analysis revealed a 40% reduction in Lgr5 transcripts, an ISC marker, in the arsenic-exposed mice, although there were no changes in the protein expression of Olfm4. Secretory cell-specific transcript markers of Paneth (Defa1), Goblet (Tff3), and secretory transit amplifying (Math1) cells were reduced by 51%, 44%, and 30% respectively, in the arsenic-exposed mice, indicating significant impacts on the Wnt-dependent differentiation pathway. Further, protein levels of phosphorylated β-catenin were reduced in the arsenic-exposed mice, which increased the expression of Wnt-dependent transcripts CD44 and c-myc. PCA analysis, followed by MANOVA and regression analyses, revealed significant changes and correlations between Lgr5 and the transit amplifying (TA) cell markers Math1 and Hes1, which are in the secretory cell pathway. Similar comparisons between Math1 and Defa1 show that terminal differentiation into Paneth cells is also reduced in the arsenic-exposed mice. The data suggests that ISCs are not lost following arsenic exposure, but rather, specific Wnt-dependent progenitor cell formation and terminal differentiation in the small intestine is reduced.
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Affiliation(s)
- Jordan T Jatko
- Environmental Toxicology Graduate Program, Clemson University, 132 Long Hall, Clemson, SC 29634, USA
| | - Caitlin L Darling
- Department of Biological Sciences, Clemson University, 132 Long Hall, Clemson, SC 29634, USA
| | - Michael P Kellett
- Department of Biological Sciences, Clemson University, 132 Long Hall, Clemson, SC 29634, USA
| | - Lisa J Bain
- Environmental Toxicology Graduate Program, Clemson University, 132 Long Hall, Clemson, SC 29634, USA; Department of Biological Sciences, Clemson University, 132 Long Hall, Clemson, SC 29634, USA.
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Diaz-Garrido N, Cordero C, Olivo-Martinez Y, Badia J, Baldomà L. Cell-to-Cell Communication by Host-Released Extracellular Vesicles in the Gut: Implications in Health and Disease. Int J Mol Sci 2021; 22:ijms22042213. [PMID: 33672304 PMCID: PMC7927122 DOI: 10.3390/ijms22042213] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/17/2021] [Accepted: 02/19/2021] [Indexed: 12/12/2022] Open
Abstract
Communication between cells is crucial to preserve body homeostasis and health. Tightly controlled intercellular dialog is particularly relevant in the gut, where cells of the intestinal mucosa are constantly exposed to millions of microbes that have great impact on intestinal homeostasis by controlling barrier and immune functions. Recent knowledge involves extracellular vesicles (EVs) as mediators of such communication by transferring messenger bioactive molecules including proteins, lipids, and miRNAs between cells and tissues. The specific functions of EVs principally depend on the internal cargo, which upon delivery to target cells trigger signal events that modulate cellular functions. The vesicular cargo is greatly influenced by genetic, pathological, and environmental factors. This finding provides the basis for investigating potential clinical applications of EVs as therapeutic targets or diagnostic biomarkers. Here, we review current knowledge on the biogenesis and cargo composition of EVs in general terms. We then focus the attention to EVs released by cells of the intestinal mucosa and their impact on intestinal homeostasis in health and disease. We specifically highlight their role on epithelial barrier integrity, wound healing of epithelial cells, immunity, and microbiota shaping. Microbiota-derived EVs are not reviewed here.
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Affiliation(s)
- Natalia Diaz-Garrido
- Secció de Bioquímica i Biología Molecular, Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona, 08028 Barcelona, Spain; (N.D.-G.); (C.C.); (Y.O.-M.); (J.B.)
- Institut de Biomedicina de la Universitat de Barcelona (IBUB), Institut de Recerca Sant Joan de Déu (IRSJD), 08950 Barcelona, Spain
| | - Cecilia Cordero
- Secció de Bioquímica i Biología Molecular, Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona, 08028 Barcelona, Spain; (N.D.-G.); (C.C.); (Y.O.-M.); (J.B.)
- Institut de Biomedicina de la Universitat de Barcelona (IBUB), Institut de Recerca Sant Joan de Déu (IRSJD), 08950 Barcelona, Spain
| | - Yenifer Olivo-Martinez
- Secció de Bioquímica i Biología Molecular, Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona, 08028 Barcelona, Spain; (N.D.-G.); (C.C.); (Y.O.-M.); (J.B.)
- Institut de Biomedicina de la Universitat de Barcelona (IBUB), Institut de Recerca Sant Joan de Déu (IRSJD), 08950 Barcelona, Spain
| | - Josefa Badia
- Secció de Bioquímica i Biología Molecular, Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona, 08028 Barcelona, Spain; (N.D.-G.); (C.C.); (Y.O.-M.); (J.B.)
- Institut de Biomedicina de la Universitat de Barcelona (IBUB), Institut de Recerca Sant Joan de Déu (IRSJD), 08950 Barcelona, Spain
| | - Laura Baldomà
- Secció de Bioquímica i Biología Molecular, Departament de Bioquímica i Fisiologia, Facultat de Farmàcia i Ciències de l’Alimentació, Universitat de Barcelona, 08028 Barcelona, Spain; (N.D.-G.); (C.C.); (Y.O.-M.); (J.B.)
- Institut de Biomedicina de la Universitat de Barcelona (IBUB), Institut de Recerca Sant Joan de Déu (IRSJD), 08950 Barcelona, Spain
- Correspondence: ; Tel.: +34-93-403-44-96
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6
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The RNA helicase Dhx15 mediates Wnt-induced antimicrobial protein expression in Paneth cells. Proc Natl Acad Sci U S A 2021; 118:2017432118. [PMID: 33483420 PMCID: PMC7848544 DOI: 10.1073/pnas.2017432118] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
RNA helicases play roles in various essential biological processes such as RNA splicing and editing. Recent in vitro studies show that RNA helicases are involved in immune responses toward viruses, serving as viral RNA sensors or immune signaling adaptors. However, there is still a lack of in vivo data to support the tissue- or cell-specific function of RNA helicases owing to the lethality of mice with complete knockout of RNA helicases; further, there is a lack of evidence about the antibacterial role of helicases. Here, we investigated the in vivo role of Dhx15 in intestinal antibacterial responses by generating mice that were intestinal epithelial cell (IEC)-specific deficient for Dhx15 (Dhx15 f/f Villin1-cre, Dhx15ΔIEC). These mice are susceptible to infection with enteric bacteria Citrobacter rodentium (C. rod), owing to impaired α-defensin production by Paneth cells. Moreover, mice with Paneth cell-specific depletion of Dhx15 (Dhx15 f/f Defensinα6-cre, Dhx15ΔPaneth) are more susceptible to DSS (dextran sodium sulfate)-induced colitis, which phenocopy Dhx15ΔIEC mice, due to the dysbiosis of the intestinal microbiota. In humans, reduced protein levels of Dhx15 are found in ulcerative colitis (UC) patients. Taken together, our findings identify a key regulator of Wnt-induced α-defensins in Paneth cells and offer insights into its role in the antimicrobial response as well as intestinal inflammation.
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7
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L-WRN conditioned medium for gastrointestinal epithelial stem cell culture shows replicable batch-to-batch activity levels across multiple research teams. Stem Cell Res 2019; 37:101430. [PMID: 30933720 PMCID: PMC6579736 DOI: 10.1016/j.scr.2019.101430] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 03/13/2019] [Accepted: 03/25/2019] [Indexed: 01/08/2023] Open
Abstract
Conditioned medium (CM) derived from engineered cells often facilitates the cost-effective culture of a variety of stem cells. Growing emphasis on the importance of rigor and reproducibility in lab-based science requires development of best practices approaches, including quality control procedures for the assessment of CM batches to ensure reliable interpretation and reproducibility. Here, we tested activity level variations of L-WRN CM, which is produced from an L cell line engineered to secrete Wnt3a, R spondin 3, and Noggin into a single CM that is widely used for gastrointestinal stem cell culture. We assessed 14 independent batches of L-WRN CM, produced by 5 laboratories at 3 research institutions, by multiple quantitative assays. We observed highly replicable activity levels among L-WRN CM batches prepared according to a previously published protocol. Quality control assays measuring spheroid growth or mRNA gene marker expression were best able to distinguish the quality L-WRN CM batches, whereas a Wnt reporter assay did not. Thus, we have validated that L-WRN CM activity is highly reproducible over time and between laboratories and have provided guidelines for L-WRN CM quality control testing. These validation procedures and guidelines will benefit experiment replication efforts in stem cell research.
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8
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Comparative regenerative mechanisms across different mammalian tissues. NPJ Regen Med 2018; 3:6. [PMID: 29507774 PMCID: PMC5824955 DOI: 10.1038/s41536-018-0044-5] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 01/18/2018] [Accepted: 01/23/2018] [Indexed: 02/08/2023] Open
Abstract
Stimulating regeneration of complex tissues and organs after injury to effect complete structural and functional repair, is an attractive therapeutic option that would revolutionize clinical medicine. Compared to many metazoan phyla that show extraordinary regenerative capacity, which in some instances persists throughout life, regeneration in mammalians, particularly humans, is limited or absent. Here we consider recent insights in the elucidation of molecular mechanisms of regeneration that have come from studies of tissue homeostasis and injury repair in mammalian tissues that span the spectrum from little or no self-renewal, to those showing active cell turnover throughout life. These studies highlight the diversity of factors that constrain regeneration, including immune responses, extracellular matrix composition, age, injury type, physiological adaptation, and angiogenic and neurogenic capacity. Despite these constraints, much progress has been made in elucidating key molecular mechanisms that may provide therapeutic targets for the development of future regenerative therapies, as well as previously unidentified developmental paradigms and windows-of-opportunity for improved regenerative repair.
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9
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Bui TM, Mascarenhas LA, Sumagin R. Extracellular vesicles regulate immune responses and cellular function in intestinal inflammation and repair. Tissue Barriers 2018; 6:e1431038. [PMID: 29424657 PMCID: PMC6179129 DOI: 10.1080/21688370.2018.1431038] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 01/08/2018] [Accepted: 01/13/2018] [Indexed: 12/19/2022] Open
Abstract
Tightly controlled communication among the various resident and recruited cells in the intestinal tissue is critical for maintaining tissue homeostasis, re-establishment of the barrier function and healing responses following injury. Emerging evidence convincingly implicates extracellular vesicles (EVs) in facilitating this important cell-to-cell crosstalk by transporting bioactive effectors and genetic information in healthy tissue and disease. While many aspects of EV biology, including release mechanisms, cargo packaging, and uptake by target cells are still not completely understood, EVs contribution to cellular signaling and function is apparent. Moreover, EV research has already sparked a clinical interest, as a potential diagnostic, prognostic and therapeutic tool. The current review will discuss the function of EVs originating from innate immune cells, namely, neutrophils, monocytes and macrophages, as well as intestinal epithelial cells in healthy tissue and inflammatory disorders of the intestinal tract. Our discussion will specifically emphasize the contribution of EVs to the regulation of vascular and epithelial barrier function in inflamed intestines, wound healing, as well as trafficking and activity of resident and recruited immune cells.
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Affiliation(s)
- Triet M. Bui
- Northwestern University, Feinberg School of Medicine, Department of Pathology, Chicago, IL, USA
| | - Lorraine A. Mascarenhas
- Northwestern University, Feinberg School of Medicine, Department of Pathology, Chicago, IL, USA
| | - Ronen Sumagin
- Northwestern University, Feinberg School of Medicine, Department of Pathology, Chicago, IL, USA
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10
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Sebrell TA, Sidar B, Bruns R, Wilkinson RA, Wiedenheft B, Taylor PJ, Perrino BA, Samuelson LC, Wilking JN, Bimczok D. Live imaging analysis of human gastric epithelial spheroids reveals spontaneous rupture, rotation and fusion events. Cell Tissue Res 2017; 371:293-307. [PMID: 29178040 DOI: 10.1007/s00441-017-2726-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 10/27/2017] [Indexed: 01/16/2023]
Abstract
Three-dimensional cultures of primary epithelial cells including organoids, enteroids and epithelial spheroids have become increasingly popular for studies of gastrointestinal development, mucosal immunology and epithelial infection. However, little is known about the behavior of these complex cultures in their three-dimensional culture matrix. Therefore, we performed extended time-lapse imaging analysis (up to 4 days) of human gastric epithelial spheroids generated from adult tissue samples in order to visualize the dynamics of the spheroids in detail. Human gastric epithelial spheroids cultured in our laboratory grew to an average diameter of 443.9 ± 34.6 μm after 12 days, with the largest spheroids reaching diameters of >1000 μm. Live imaging analysis revealed that spheroid growth was associated with cyclic rupture of the epithelial shell at a frequency of 0.32 ± 0.1/day, which led to the release of luminal contents. Spheroid rupture usually resulted in an initial collapse, followed by spontaneous re-formation of the spheres. Moreover, spheroids frequently rotated around their axes within the Matrigel matrix, possibly propelled by basolateral pseudopodia-like formations of the epithelial cells. Interestingly, adjacent spheroids occasionally underwent luminal fusion, as visualized by injection of individual spheroids with FITC-Dextran (4 kDa). In summary, our analysis revealed unexpected dynamics in human gastric spheroids that challenge our current view of cultured epithelia as static entities and that may need to be considered when performing spheroid infection experiments.
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Affiliation(s)
- T Andrew Sebrell
- Department of Microbiology and Immunology, Montana State University, 960 Technology Blvd., Bozeman, MT, 59717, USA
| | - Barkan Sidar
- Department of Chemical and Biological Engineering, Montana State University, Bozeman, MT, USA
| | - Rachel Bruns
- Department of Microbiology and Immunology, Montana State University, 960 Technology Blvd., Bozeman, MT, 59717, USA
| | - Royce A Wilkinson
- Department of Microbiology and Immunology, Montana State University, 960 Technology Blvd., Bozeman, MT, 59717, USA
| | - Blake Wiedenheft
- Department of Microbiology and Immunology, Montana State University, 960 Technology Blvd., Bozeman, MT, 59717, USA
| | | | - Brian A Perrino
- Department of Physiology & Cell Biology, Reno School of Medicine, University of Nevada, Reno, NV, USA
| | - Linda C Samuelson
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - James N Wilking
- Department of Chemical and Biological Engineering, Montana State University, Bozeman, MT, USA
| | - Diane Bimczok
- Department of Microbiology and Immunology, Montana State University, 960 Technology Blvd., Bozeman, MT, 59717, USA.
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Holmberg FE, Pedersen J, Jørgensen P, Soendergaard C, Jensen KB, Nielsen OH. Intestinal barrier integrity and inflammatory bowel disease: Stem cell‐based approaches to regenerate the barrier. J Tissue Eng Regen Med 2017. [DOI: 10.1002/term.2506] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Fredrik E.O. Holmberg
- Department of Gastroenterology, Medical Section, Herlev HospitalUniversity of Copenhagen Herlev Denmark
| | - Jannie Pedersen
- Department of Gastroenterology, Medical Section, Herlev HospitalUniversity of Copenhagen Herlev Denmark
| | - Peter Jørgensen
- Department of Gastroenterology, Medical Section, Herlev HospitalUniversity of Copenhagen Herlev Denmark
| | - Christoffer Soendergaard
- Department of Gastroenterology, Medical Section, Herlev HospitalUniversity of Copenhagen Herlev Denmark
| | - Kim B. Jensen
- Biotech Research and Innovation Centre (BRIC)University of Copenhagen Copenhagen Denmark
- The Danish Stem Cell Center (Danstem)University of Copenhagen, Faculty of Health and Medical Sciences Copenhagen Denmark
| | - Ole H. Nielsen
- Department of Gastroenterology, Medical Section, Herlev HospitalUniversity of Copenhagen Herlev Denmark
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12
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Tian Y, Ma X, Lv C, Sheng X, Li X, Zhao R, Song Y, Andl T, Plikus MV, Sun J, Ren F, Shuai J, Lengner CJ, Cui W, Yu Z. Stress responsive miR-31 is a major modulator of mouse intestinal stem cells during regeneration and tumorigenesis. eLife 2017; 6. [PMID: 28870287 PMCID: PMC5584991 DOI: 10.7554/elife.29538] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 07/07/2017] [Indexed: 12/15/2022] Open
Abstract
Intestinal regeneration and tumorigenesis are believed to be driven by intestinal stem cells (ISCs). Elucidating mechanisms underlying ISC activation during regeneration and tumorigenesis can help uncover the underlying principles of intestinal homeostasis and disease including colorectal cancer. Here we show that miR-31 drives ISC proliferation, and protects ISCs against apoptosis, both during homeostasis and regeneration in response to ionizing radiation injury. Furthermore, miR-31 has oncogenic properties, promoting intestinal tumorigenesis. Mechanistically, miR-31 acts to balance input from Wnt, BMP, TGFβ signals to coordinate control of intestinal homeostasis, regeneration and tumorigenesis. We further find that miR-31 is regulated by the STAT3 signaling pathway in response to radiation injury. These findings identify miR-31 as a critical modulator of ISC biology, and a potential therapeutic target for a broad range of intestinal regenerative disorders and cancers. Cells lining the inner wall of the gut help to absorb nutrients and to protect the body against harmful microbes and substances. Being on the front line of defense means that these cells often sustain injuries. Specialized cells called intestinal stem cells keep the tissues healthy by replacing the damaged and dying cells. The intestinal stem cells can produce copies of themselves and generate precursors of the gut cells. They also have specific mechanism to protect themselves from cell death. These processes are regulated by different signals that are generated by the cell themselves or the neighboring cells. If these processes get out of control, cells can easily be depleted or develop into cancer cells. Until now, it remained unclear how intestinal stem cells can differentiate between and respond to multiple and simultaneous signals. It is known that short RNA molecules called microRNA play an important role in the signaling pathways of damaged cells and during cancer development. In the gut, different microRNAs, including microRNA-31,help to keep the gut lining intact. However, previous research has shown that bowel cancer cells also contain high amounts of microRNA-31. To see whether microRNA-31 plays a role in controlling the signaling systems in intestinal stem cells, Tian, Ma, Lv et al. looked at genetically modified mice that either had too much microRNA-31 or none. Mice with too much microRNA-31 produced more intestinal stem cells and were able to better repair any cell damage. Mice without microRNA-31 gave rise to fewer intestinal stem cellsand had no damage repair, but were able to stop cancer cells in the gut from growing. The results showed that microRNA-31 in intestinal stem cells helps the cells to divide and to protect themselves from cell death. It controlled and balanced the different types of cell signaling by either repressing or activating various signals. When Tian et al. damaged the stem cells using radiation, the cells increased their microRNA-31 levels as a defense mechanism. This helped the cells to survive and to activate repair mechanisms. Furthermore, Tian et al. discovered that microRNA-31 can enhance the growth of tumors. These results indicate that microRNA-31 plays an important role both in repairing gut linings and furthering tumor development. A next step will be to see whether cancer cells use microRNA-31 to protect themselves from chemo- and radiation therapy. This could help scientists find new ways to render cancerous cells more susceptible to existing cancer therapies.
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Affiliation(s)
- Yuhua Tian
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Xianghui Ma
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Cong Lv
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Xiaole Sheng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Xiang Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Ran Zhao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Yongli Song
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Thomas Andl
- Vanderbilt University Medical Center, Nashville, United States
| | - Maksim V Plikus
- Department of Developmental and Cell Biology, Sue and Bill Gross Stem Cell Research Center, Center for Complex Biological Systems, University of California, Irvine, Irvine, United States
| | - Jinyue Sun
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Fazheng Ren
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Jianwei Shuai
- Department of Physics and State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, Xiamen University, Xiamen, China
| | - Christopher J Lengner
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, United States.,Institute for Regenerative Medicine, University of Pennsylvania, Philadelphia, United States
| | - Wei Cui
- Institute of Reproductive and Developmental Biology, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Zhengquan Yu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health and State Key Laboratories for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
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Zhao Y, Wu K, Nguyen C, Smbatyan G, Melendez E, Higuchi Y, Chen Y, Kahn M. Small molecule p300/catenin antagonist enhances hematopoietic recovery after radiation. PLoS One 2017; 12:e0177245. [PMID: 28486541 PMCID: PMC5423697 DOI: 10.1371/journal.pone.0177245] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 04/24/2017] [Indexed: 12/26/2022] Open
Abstract
There is currently no FDA approved therapeutic agent for ARS mitigation post radiation exposure. Here we report that the small molecule YH250, which specifically antagonizes p300/catenin interaction, stimulates hematopoiesis in lethally or sublethally irradiated mice. A single administration of YH250 24 hours post irradiation can significantly stimulate HSC proliferation, improve survival and accelerate peripheral blood count recovery. Our studies suggest that promotion of the expansion of the remaining HSC population via stimulation of symmetric non-differentiative proliferation is at least part of the mechanism of action.
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Affiliation(s)
- Yi Zhao
- Department of Medicine, Keck School of Medicine of University of Southern California, Los Angeles, California, United States of America
- Center for Molecular Pathways and Drug Discovery, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
- Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California, United States of America
| | - Kaijin Wu
- Department of Biochemistry and Molecular Biology, Norris Comprehensive Cancer Research Center, Keck School of Medicine of University of Southern California, Los Angeles, California, United States of America
| | - Cu Nguyen
- Department of Biochemistry and Molecular Biology, Norris Comprehensive Cancer Research Center, Keck School of Medicine of University of Southern California, Los Angeles, California, United States of America
| | - Goar Smbatyan
- Department of Biochemistry and Molecular Biology, Norris Comprehensive Cancer Research Center, Keck School of Medicine of University of Southern California, Los Angeles, California, United States of America
| | - Elisabeth Melendez
- Department of Biochemistry and Molecular Biology, Norris Comprehensive Cancer Research Center, Keck School of Medicine of University of Southern California, Los Angeles, California, United States of America
| | - Yusuke Higuchi
- Center for Molecular Pathways and Drug Discovery, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
- Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California, United States of America
- Department of Biochemistry and Molecular Biology, Norris Comprehensive Cancer Research Center, Keck School of Medicine of University of Southern California, Los Angeles, California, United States of America
- Department of Organic Fine Chemicals, The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka, Japan
| | - Yibu Chen
- Bioinformatics Service Program, Norris Medical Library, University of Southern California, Los Angeles, California, United States of America
| | - Michael Kahn
- Center for Molecular Pathways and Drug Discovery, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
- Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California, United States of America
- Department of Biochemistry and Molecular Biology, Norris Comprehensive Cancer Research Center, Keck School of Medicine of University of Southern California, Los Angeles, California, United States of America
- Department of Molecular Pharmacology and Toxicology, Keck School of Medicine, University of Southern California, Los Angeles, California, United States of America
- * E-mail:
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