1
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Peart LA, Draper M, Tarasov AI. The impact of GLP-1 signalling on the energy metabolism of pancreatic islet β-cells and extrapancreatic tissues. Peptides 2024; 178:171243. [PMID: 38788902 DOI: 10.1016/j.peptides.2024.171243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/19/2024] [Accepted: 05/21/2024] [Indexed: 05/26/2024]
Abstract
Glucagon-like peptide-1 signalling impacts glucose homeostasis and appetite thereby indirectly affecting substrate availability at the whole-body level. The incretin canonically produces an insulinotropic effect, thereby lowering blood glucose levels by promoting the uptake and inhibiting the production of the sugar by peripheral tissues. Likewise, GLP-1 signalling within the central nervous system reduces the appetite and food intake, whereas its gastric effect delays the absorption of nutrients, thus improving glycaemic control and reducing the risk of postprandial hyperglycaemia. We review the molecular aspects of the GLP-1 signalling, focusing on its impact on intracellular energy metabolism. Whilst the incretin exerts its effects predominantly via a Gs receptor, which decodes the incretin signal into the elevation of intracellular cAMP levels, the downstream signalling cascades within the cell, acting on fast and slow timescales, resulting in an enhancement or an attenuation of glucose catabolism, respectively.
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Affiliation(s)
- Leah A Peart
- School of Biomedical Sciences, Ulster University, Cromore Road, Coleraine, Northern Ireland BT52 1SA, UK
| | - Matthew Draper
- School of Biomedical Sciences, Ulster University, Cromore Road, Coleraine, Northern Ireland BT52 1SA, UK
| | - Andrei I Tarasov
- School of Biomedical Sciences, Ulster University, Cromore Road, Coleraine, Northern Ireland BT52 1SA, UK.
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2
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Human umbilical cord mesenchymal stem cell-derived TGFBI attenuates streptozotocin-induced type 1 diabetes mellitus by inhibiting T-cell proliferation. Hum Cell 2023; 36:997-1010. [PMID: 36841925 PMCID: PMC10110644 DOI: 10.1007/s13577-023-00868-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 01/30/2023] [Indexed: 02/27/2023]
Abstract
MSCs have been demonstrated to have a great benefit for type 1 diabetes mellitus (T1DM) due to their strong immunosuppressive and regenerative capacity. However, the comprehensive mechanism is still unclear. Our previous study indicated that transforming growth factor beta induced (TGFBI) is highly expressed in human umbilical cord-derived mesenchymal stem or stromal cells (hUC-MSCs), which are also implicated in T1DM. In this study, we found that infusion of TGFBI knockdown hUC-MSCs displayed impaired therapeutic effects in T1DM mice and decreased immunosuppressive capability. TGFBI knockdown hUC-MSCs could increase the proportion of T-cell infiltration while increasing the expression of IFN-gamma and interleukin-17A in the spleen. In addition, we also revealed that hUC-MSC-derived TGFBI could repress activated T-cell proliferation by interfering with G1/S checkpoint CyclinD2 expression. Our results demonstrate that TGFBI plays a critical role in MSC immunologic regulation. TGFBI could be a new immunoregulatory molecule controlling MSC function for new treatments of T1DM. Schematic Representation of the Immunosuppression capacity of hUC-MSC by TGFBI.
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Teratani T, Kasahara N, Fujimoto Y, Sakuma Y, Miki A, Goto M, Sata N, Kitayama J. Mesenchymal Stem Cells Secretions Enhanced ATP Generation on Isolated Islets during Transplantation. Islets 2022; 14:69-81. [PMID: 35034568 PMCID: PMC8765074 DOI: 10.1080/19382014.2021.2022423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The success of islet transplantation in both basic research and clinical settings has proven that cell therapy has the potential to cure diabetes. Islets intended for transplantation are inevitably subjected to damage from a number of sources, including ischemic injury during removal and delivery of the donor pancreas, enzymatic digestion during islet isolation, and reperfusion injury after transplantation in the recipient. Here, we found that protein factors secreted by porcine adipose-tissue mesenchymal stem cells (AT-MSCs) were capable of activating preserved porcine islets. A conditioned medium was prepared from the supernatant obtained by culturing porcine AT-MSCs for 2 days in serum-free medium. Islets were preserved at 4°C in University of Wisconsin solution during transportation and then incubated at 37°C in RPMI-1620 medium with fractions of various molecular weights prepared from the conditioned medium. After treatment with certain fractions of the AT-MSC secretions, the intracellular ATP levels of the activated islets had increased to over 160% of their initial values after 4 days of incubation. Our novel system may be able to restore the condition of isolated islets after transportation or preservation and may help to improve the long-term outcome of islet transplantation.Abbreviations: AT-MSC, adipose-tissue mesenchymal stem cell; Cas-3, caspase-3; DAPI, 4,6-diamidino-2-phenylindole; DTZ, dithizone; ES cell, embryonic stem cell; FITC, fluorescein isothiocyanate; IEQ, islet equivalent; INS, insulin; iPS cell, induced pluripotent stem cell; Luc-Tg rat, luciferase-transgenic rat; PCNA, proliferating cell nuclear antigen; PDX1, pancreatic and duodenal homeobox protein-1; UW, University of Wisconsin; ZO1, zona occludens 1.
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Affiliation(s)
- Takumi Teratani
- Division of Translational Research, Jichi Medical University, Tochigi, Japan
- Department of Surgery, Jichi Medical University, Tochigi, Japan
- CONTACT Takumi Teratani Division of Clinical Investigation, Jichi Medical University, 3311-1, Yakushiji, Shimotsukeshi, Tochigi329-0498, Japan
| | - Naoya Kasahara
- Department of Surgery, Jichi Medical University, Tochigi, Japan
| | | | - Yasunaru Sakuma
- Department of Surgery, Jichi Medical University, Tochigi, Japan
| | - Atsushi Miki
- Department of Surgery, Jichi Medical University, Tochigi, Japan
| | - Masafumi Goto
- New Industry Creation Hatchery Center, Tohoku University, Miyagi, Japan
| | - Naohiro Sata
- Department of Surgery, Jichi Medical University, Tochigi, Japan
| | - Joji Kitayama
- Division of Translational Research, Jichi Medical University, Tochigi, Japan
- Department of Surgery, Jichi Medical University, Tochigi, Japan
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4
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Li F, Crumley K, Bealer E, King JL, Saito E, Grimany-Nuno O, Yolcu ES, Shirwan H, Shea LD. Fas Ligand-Modified Scaffolds Protect Stem Cell Derived β-Cells by Modulating Immune Cell Numbers and Polarization. ACS APPLIED MATERIALS & INTERFACES 2022; 15:50549-50559. [PMID: 36533683 DOI: 10.1021/acsami.2c12939] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Stem cell derived β-cells have demonstrated the potential to control blood glucose levels and represent a promising treatment for Type 1 diabetes (T1D). Early engraftment post-transplantation and subsequent maturation of these β-cells are hypothesized to be limited by the initial inflammatory response, which impacts the ability to sustain normoglycemia for long periods. We investigated the survival and development of immature hPSC-derived β-cells transplanted on poly(lactide-co-glycolide) (PLG) microporous scaffolds into the peritoneal fat, a site being considered for clinical translation. The scaffolds were modified with biotin for binding of a streptavidin-FasL (SA-FasL) chimeric protein to modulate the local immune cell responses. The presence of FasL impacted infiltration of monocytes and neutrophils and altered the immune cell polarization. Conditioned media generated from SA-FasL scaffolds explanted at day 4 post-transplant did not impact hPSC-derived β-cell survival and maturation in vitro, while these responses were reduced with conditioned media from control scaffolds. Following transplantation, β-cell viability and differentiation were improved with SA-FasL modification. A sustained increase in insulin positive cell ratio was observed with SA-FasL-modified scaffolds relative to control scaffolds. These results highlight that the initial immune response can significantly impact β-cell engraftment, and modulation of cell infiltration and polarization may be a consideration for supporting long-term function at an extrahepatic site.
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Affiliation(s)
- Feiran Li
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Kelly Crumley
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Elizabeth Bealer
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jessica L King
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Eiji Saito
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Orlando Grimany-Nuno
- Department of Microbiology and Immunology, School of Medicine, University of Louisville, Louisville, Kentucky 40202, United States
| | - Esma S Yolcu
- Department of Child Health and Molecular Microbiology and Immunology, University of Missouri, Columbia, Missouri 65211, United States
- Department of Microbiology and Immunology, School of Medicine, University of Louisville, Louisville, Kentucky 40202, United States
| | - Haval Shirwan
- Department of Child Health and Molecular Microbiology and Immunology, University of Missouri, Columbia, Missouri 65211, United States
- Department of Microbiology and Immunology, School of Medicine, University of Louisville, Louisville, Kentucky 40202, United States
| | - Lonnie D Shea
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States
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5
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Katz LS, Argmann C, Lambertini L, Scott DK. T3 and glucose increase expression of phosphoenolpyruvate carboxykinase (PCK1) leading to increased β-cell proliferation. Mol Metab 2022; 66:101646. [PMID: 36455788 PMCID: PMC9731891 DOI: 10.1016/j.molmet.2022.101646] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 11/18/2022] [Accepted: 11/23/2022] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVES Thyroid hormone (T3) and high glucose concentrations are critical components of β-cell maturation and function. In the present study, we asked whether T3 and glucose signaling pathways coordinately regulate transcription of genes important for β-cell function and proliferation. METHODS RNA-seq analysis was performed on cadaveric human islets from five different donors in response to low and high glucose concentrations and in the presence or absence of T3. Gene expression was also studies in sorted human β-cells, mouse islets and Ins-1 cells by RT-qPCR. Silencing of the thyroid hormone receptors (THR) was conducted using lentiviruses. Proliferation was assessed by ki67 immunostaining in primary human/mouse islets. Chromatin immunoprecipitation and proximity ligation assay were preformed to validate interactions of ChREBP and THR. RESULTS We found glucose-mediated expression of carbohydrate response element binding protein alpha and beta (ChREBPα and ChREBPβ) mRNAs and their target genes are highly dependent on T3 concentrations in rodent and human β-cells. In β-cells, T3 and glucose coordinately regulate the expression of ChREBPβ and PCK1 (phosphoenolpyruvate carboxykinase-1) among other important genes for β-cell maturation. Additionally, we show the thyroid hormone receptor (THR) and ChREBP interact, and their relative response elements are located near to each other on mutually responsive genes. In FACS-sorted adult human β-cells, we found that high concentrations of glucose and T3 induced the expression of PCK1. Next, we show that overexpression of Pck1 together with dimethyl malate (DMM), a substrate precursor, significantly increased β-cell proliferation in human islets. Finally, using a Cre-Lox approach, we demonstrated that ChREBPβ contributes to Pck1-dependent β-cell proliferation in mouse β-cells. CONCLUSIONS We conclude that T3 and glucose act together to regulate ChREBPβ, leading to increased expression and activity of Pck1, and ultimately increased β-cell proliferation.
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Affiliation(s)
- Liora S. Katz
- Diabetes, Obesity and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA,Corresponding author. Obesity, Diabetes and Metabolism Institute, Icahn School of Medicine at Mount Sinai, One Gustave L Levy Place, Box 1152, New York, NY 10029, USA.
| | - Carmen Argmann
- Diabetes, Obesity and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA,Department of Genetics and Genomics Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Luca Lambertini
- Diabetes, Obesity and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Donald K. Scott
- Diabetes, Obesity and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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6
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Jeyagaran A, Lu CE, Zbinden A, Birkenfeld AL, Brucker SY, Layland SL. Type 1 diabetes and engineering enhanced islet transplantation. Adv Drug Deliv Rev 2022; 189:114481. [PMID: 36002043 PMCID: PMC9531713 DOI: 10.1016/j.addr.2022.114481] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 08/01/2022] [Accepted: 08/02/2022] [Indexed: 01/24/2023]
Abstract
The development of new therapeutic approaches to treat type 1 diabetes mellitus (T1D) relies on the precise understanding and deciphering of insulin-secreting β-cell biology, as well as the mechanisms responsible for their autoimmune destruction. β-cell or islet transplantation is viewed as a potential long-term therapy for the millions of patients with diabetes. To advance the field of insulin-secreting cell transplantation, two main research areas are currently investigated by the scientific community: (1) the identification of the developmental pathways that drive the differentiation of stem cells into insulin-producing cells, providing an inexhaustible source of cells; and (2) transplantation strategies and engineered transplants to provide protection and enhance the functionality of transplanted cells. In this review, we discuss the biology of pancreatic β-cells, pathology of T1D and current state of β-cell differentiation. We give a comprehensive view and discuss the different possibilities to engineer enhanced insulin-secreting cell/islet transplantation from a translational perspective.
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Affiliation(s)
- Abiramy Jeyagaran
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Eberhard Karls University Tübingen, 72076 Tübingen, Germany,NMI Natural and Medical Sciences Institute at the University Tübingen, 72770 Reutlingen, Germany
| | - Chuan-en Lu
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Eberhard Karls University Tübingen, 72076 Tübingen, Germany
| | - Aline Zbinden
- Department of Immunology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - Andreas L. Birkenfeld
- Department of Internal Medicine IV, University Hospital Tübingen, Tübingen, Germany,Institute for Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich at the University of Tübingen, German Center for Diabetes Research (DZD e.V.), Munich, Germany
| | - Sara Y. Brucker
- Department of Women's Health, Eberhard Karls University, 72076 Tübingen, Germany
| | - Shannon L. Layland
- Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Eberhard Karls University Tübingen, 72076 Tübingen, Germany,Department of Women's Health, Eberhard Karls University, 72076 Tübingen, Germany,Corresponding author at: Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, Eberhard Karls University Tübingen, Silcherstrasse 7/1, 72076 Tübingen, Germany.
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7
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Persistent coxsackievirus B1 infection triggers extensive changes in the transcriptome of human pancreatic ductal cells. iScience 2022; 25:103653. [PMID: 35024587 PMCID: PMC8728469 DOI: 10.1016/j.isci.2021.103653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 12/02/2021] [Accepted: 12/15/2021] [Indexed: 02/07/2023] Open
Abstract
Enteroviruses, particularly the group B coxsackieviruses (CVBs), have been associated with the development of type 1 diabetes. Several CVB serotypes establish chronic infections in human cells in vivo and in vitro. However, the mechanisms leading to enterovirus persistency and, possibly, beta cell autoimmunity are not fully understood. We established a carrier-state-type persistent infection model in human pancreatic cell line PANC-1 using two distinct CVB1 strains and profiled the infection-induced changes in cellular transcriptome. In the current study, we observed clear changes in the gene expression of factors associated with the pancreatic microenvironment, the secretory pathway, and lysosomal biogenesis during persistent CVB1 infections. Moreover, we found that the antiviral response pathways were activated differently by the two CVB1 strains. Overall, our study reveals extensive transcriptional responses in persistently CVB1-infected pancreatic cells with strong opposite but also common changes between the two strains. Establishment of persistent CVB1 infection in PANC-1 cells using two CVB1 strains Extensive transcriptional responses in persistently CVB1-infected pancreatic cells Changes in pancreatic microenvironment, secretory pathway, and lysosomes Antiviral immune response was activated differently by the two CVB1 strains
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8
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Primavera R, Razavi M, Kevadiya BD, Wang J, Vykunta A, Di Mascolo D, Decuzzi P, Thakor AS. Enhancing islet transplantation using a biocompatible collagen-PDMS bioscaffold enriched with dexamethasone-microplates. Biofabrication 2021; 13. [PMID: 33455953 DOI: 10.1088/1758-5090/abdcac] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 01/15/2021] [Indexed: 01/01/2023]
Abstract
Islet transplantation is a promising approach to enable type 1 diabetic patients to attain glycemic control independent of insulin injections. However, up to 60% of islets are lost immediately following transplantation. To improve this outcome, islets can be transplanted within bioscaffolds, however, synthetic bioscaffolds induce an intense inflammatory reaction which can have detrimental effects on islet function and survival. In the present study, we first improved the biocompatibility of polydimethylsiloxane (PDMS) bioscaffolds by coating them with collagen. To reduce the inflammatory response to PDMS bioscaffolds, we then enriched the bioscaffolds with dexamethasone-loaded microplates (DEX-µScaffolds). These DEX-microplates have the ability to release DEX in a sustained manner over 7 weeks within a therapeutic range that does not affect the glucose responsiveness of the islets but which minimizes inflammation in the surrounding microenvironment. The bioscaffold showed excellent mechanical properties that enabled it to resist pore collapse thereby helping to facilitate islet seeding and its handling for implantation, and subsequent engraftment, within the epididymal fat pad (EFP). Following the transplantation of islets into the EFP of diabetic mice using DEX-µScaffolds there was a return in basal blood glucose to normal values by day 4, with normoglycemia maintained for 30 days. Furthermore, these animals demonstrated a normal dynamic response to glucose challenges with histological evidence showing reduced pro-inflammatory cytokines and fibrotic tissue surrounding DEX-µScaffolds at the transplantation site. In contrast, diabetic animals transplanted with either islets alone or islets in bioscaffolds without DEX microplates were not able to regain glycemic control during basal conditions with overall poor islet function. Taken together, our data show that coating PDMS bioscaffolds with collagen, and enriching them with DEX-microplates, significantly prolongs and enhances islet function and survival.
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Affiliation(s)
- Rosita Primavera
- Radiology, Stanford University School of Medicine, 3155 Porter Drive, Stanford, California, 94305-5119, UNITED STATES
| | - Mehdi Razavi
- University of Central Florida, 6900 Lake Nona Blvd, Orlando, Florida, 32827, UNITED STATES
| | - Bhavesh D Kevadiya
- PEN, University of Nebraska Medical Center, Lab-3064,DRC-1,department of pharmacology and experimental neuroscience, Omaha, Nebraska, 68198, UNITED STATES
| | - Jing Wang
- Radiology, Stanford University School of Medicine, 3155 Porter Drive, Stanford, California, 94304, UNITED STATES
| | - Akshara Vykunta
- Radiology, Stanford University School of Medicine, 3155 Porter Drive, Stanford, California, 94304, UNITED STATES
| | - Daniele Di Mascolo
- Central Research Labs Genova, Istituto Italiano di Tecnologia, Via Morego, 30, Genova, Liguria, 16163, ITALY
| | - Paolo Decuzzi
- Istituto Italiano di Tecnologia, Via Morego, 30, Genova, Liguria, 16163, ITALY
| | - Avnesh S Thakor
- Radiology, Stanford University School of Medicine, 3155 Porter Drive, Stanford, California, 94304, UNITED STATES
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9
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Sehrawat A, Shiota C, Mohamed N, DiNicola J, Saleh M, Kalsi R, Zhang T, Wang Y, Prasadan K, Gittes GK. SMAD7 enhances adult β-cell proliferation without significantly affecting β-cell function in mice. J Biol Chem 2020; 295:4858-4869. [PMID: 32122971 DOI: 10.1074/jbc.ra119.011011] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 02/18/2020] [Indexed: 12/19/2022] Open
Abstract
The interplay between the transforming growth factor β (TGF-β) signaling proteins, SMAD family member 2 (SMAD2) and 3 (SMAD3), and the TGF-β-inhibiting SMAD, SMAD7, seems to play a vital role in proper pancreatic endocrine development and also in normal β-cell function in adult pancreatic islets. Here, we generated conditional SMAD7 knockout mice by crossing insulin1Cre mice with SMAD7fx/fx mice. We also created a β cell-specific SMAD7-overexpressing mouse line by crossing insulin1Dre mice with HPRT-SMAD7/RosaGFP mice. We analyzed β-cell function in adult islets when SMAD7 was either absent or overexpressed in β cells. Loss of SMAD7 in β cells inhibited proliferation, and SMAD7 overexpression enhanced cell proliferation. However, alterations in basic glucose homeostasis were not detectable following either SMAD7 deletion or overexpression in β cells. Our results show that both the absence and overexpression of SMAD7 affect TGF-β signaling and modulates β-cell proliferation but does not appear to alter β-cell function. Reversible SMAD7 overexpression may represent an attractive therapeutic option to enhance β-cell proliferation without negative effects on β-cell function.
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Affiliation(s)
- Anuradha Sehrawat
- Department of Pediatric Surgery, Children's Hospital of University of Pittsburgh, Pittsburgh, Pennsylvania 15224
| | - Chiyo Shiota
- Department of Pediatric Surgery, Children's Hospital of University of Pittsburgh, Pittsburgh, Pennsylvania 15224
| | - Nada Mohamed
- Department of Pediatric Surgery, Children's Hospital of University of Pittsburgh, Pittsburgh, Pennsylvania 15224
| | - Julia DiNicola
- Department of Pediatric Surgery, Children's Hospital of University of Pittsburgh, Pittsburgh, Pennsylvania 15224
| | - Mohamed Saleh
- Department of Pediatric Surgery, Children's Hospital of University of Pittsburgh, Pittsburgh, Pennsylvania 15224
| | - Ranjeet Kalsi
- Department of Pediatric Surgery, Children's Hospital of University of Pittsburgh, Pittsburgh, Pennsylvania 15224
| | - Ting Zhang
- Department of Pediatric Surgery, Children's Hospital of University of Pittsburgh, Pittsburgh, Pennsylvania 15224
| | - Yan Wang
- Department of Pediatric Surgery, Children's Hospital of University of Pittsburgh, Pittsburgh, Pennsylvania 15224
| | - Krishna Prasadan
- Department of Pediatric Surgery, Children's Hospital of University of Pittsburgh, Pittsburgh, Pennsylvania 15224
| | - George K Gittes
- Department of Pediatric Surgery, Children's Hospital of University of Pittsburgh, Pittsburgh, Pennsylvania 15224
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10
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Nackiewicz D, Dan M, Speck M, Chow SZ, Chen YC, Pospisilik JA, Verchere CB, Ehses JA. Islet Macrophages Shift to a Reparative State following Pancreatic Beta-Cell Death and Are a Major Source of Islet Insulin-like Growth Factor-1. iScience 2019; 23:100775. [PMID: 31962237 PMCID: PMC6971395 DOI: 10.1016/j.isci.2019.100775] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 09/24/2019] [Accepted: 12/10/2019] [Indexed: 12/21/2022] Open
Abstract
Macrophages play a dynamic role in tissue repair following injury. Here we found that following streptozotocin (STZ)-induced beta-cell death, mouse islet macrophages had increased Igf1 expression, decreased proinflammatory cytokine expression, and transcriptome changes consistent with macrophages undergoing efferocytosis and having an enhanced state of metabolism. Macrophages were the major, if not sole, contributors to islet insulin-like growth factor-1 (IGF-1) production. Adoptive transfer experiments showed that macrophages can maintain insulin secretion in vivo following beta-cell death with no effects on islet cell turnover. IGF-1 neutralization during STZ treatment decreased insulin secretion without affecting islet cell apoptosis or proliferation. Interestingly, high-fat diet (HFD) combined with STZ further skewed islet macrophages to a reparative state. Finally, islet macrophages from db/db mice also expressed decreased proinflammatory cytokines and increased Igf1 mRNA. These data have important implications for islet biology and pathology and show that islet macrophages preserve their reparative state following beta-cell death even during HFD feeding and severe hyperglycemia. Macrophages are a major source of IGF-1 protein within mouse pancreatic islets Post-beta-cell death islet macrophages shift to a reparative state Beta-cell death causes macrophage transcriptome changes consistent with efferocytosis This change can occur even in the presence of HFD feeding or severe hyperglycemia
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Affiliation(s)
- Dominika Nackiewicz
- Department of Surgery, Faculty of Medicine, University of British Columbia, BC Children's Hospital Research Institute, 950 W 28 Avenue, Vancouver V5Z 4H4, Canada
| | - Meixia Dan
- Department of Surgery, Faculty of Medicine, University of British Columbia, BC Children's Hospital Research Institute, 950 W 28 Avenue, Vancouver V5Z 4H4, Canada
| | - Madeleine Speck
- Department of Surgery, Faculty of Medicine, University of British Columbia, BC Children's Hospital Research Institute, 950 W 28 Avenue, Vancouver V5Z 4H4, Canada
| | - Samuel Z Chow
- Department of Surgery, Faculty of Medicine, University of British Columbia, BC Children's Hospital Research Institute, 950 W 28 Avenue, Vancouver V5Z 4H4, Canada
| | - Yi-Chun Chen
- Department of Surgery, Faculty of Medicine, University of British Columbia, BC Children's Hospital Research Institute, 950 W 28 Avenue, Vancouver V5Z 4H4, Canada
| | - J Andrew Pospisilik
- Van Andel Research Institute, 333 Bostwick Avenue NE, Grand Rapids, MI 49503, USA
| | - C Bruce Verchere
- Department of Surgery, Faculty of Medicine, University of British Columbia, BC Children's Hospital Research Institute, 950 W 28 Avenue, Vancouver V5Z 4H4, Canada; Department of Pathology and Laboratory Medicine, BC Children's Hospital Research Institute, 950 W 28 Avenue, Vancouver V5Z 4H4, Canada.
| | - Jan A Ehses
- Department of Surgery, Faculty of Medicine, University of British Columbia, BC Children's Hospital Research Institute, 950 W 28 Avenue, Vancouver V5Z 4H4, Canada; Department of Health Sciences and Technology, Institute of Food, Nutrition, and Health, Swiss Federal Institute of Technology, ETH Zürich, Schwerzenbach CH-8603, Switzerland.
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11
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Razavi M, Zheng F, Telichko A, Wang J, Ren G, Dahl J, Thakor AS. Improving the Function and Engraftment of Transplanted Pancreatic Islets Using Pulsed Focused Ultrasound Therapy. Sci Rep 2019; 9:13416. [PMID: 31527773 PMCID: PMC6746980 DOI: 10.1038/s41598-019-49933-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 09/03/2019] [Indexed: 11/24/2022] Open
Abstract
This study demonstrates that pulsed focused ultrasound (pFUS) therapy can non-invasively enhance the function and engraftment of pancreatic islets following transplantation. In vitro, we show that islets treated with pFUS at low (peak negative pressure (PNP): 106kPa, spatial peak temporal peak intensity (Isptp): 0.71 W/cm2), medium (PNP: 150kPa, Isptp: 1.43 W/cm2) or high (PNP: 212kPa, Isptp: 2.86 W/cm2) acoustic intensities were stimulated resulting in an increase in their function (i.e. insulin secretion at low-intensity: 1.15 ± 0.17, medium-intensity: 2.02 ± 0.25, and high-intensity: 2.54 ± 0.38 fold increase when compared to control untreated islets; P < 0.05). Furthermore, we have shown that this improvement in islet function is a result of pFUS increasing the intracellular concentration of calcium (Ca2+) within islets which was also linked to pFUS increasing the resting membrane potential (Vm) of islets. Following syngeneic renal sub-capsule islet transplantation in C57/B6 mice, pFUS (PNP: 2.9 MPa, Isptp: 895 W/cm2) improved the function of transplanted islets with diabetic animals rapidly re-establishing glycemic control. In addition, pFUS was able to enhance the engraftment by facilitating islet revascularization and reducing inflammation. Given a significant number of islets are lost immediately following transplantation, pFUS has the potential to be used in humans as a novel non-invasive therapy to facilitate islet function and engraftment, thereby improving the outcome of diabetic patients undergoing islet transplantation.
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Affiliation(s)
- Mehdi Razavi
- Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Department of Radiology, Palo Alto, California, 94304, USA
| | - Fengyang Zheng
- Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Department of Radiology, Palo Alto, California, 94304, USA.,Department of Ultrasound, Zhongshan Hospital, Fudan University and Shanghai Institute of Medical Imaging, Shanghai, 200032, China
| | - Arsenii Telichko
- Jeremy Dahl Ultrasound Laboratory, Stanford University School of Medicine, Department of Radiology, Palo Alto, California, 94304, USA
| | - Jing Wang
- Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Department of Radiology, Palo Alto, California, 94304, USA
| | - Gang Ren
- Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Department of Radiology, Palo Alto, California, 94304, USA
| | - Jeremy Dahl
- Jeremy Dahl Ultrasound Laboratory, Stanford University School of Medicine, Department of Radiology, Palo Alto, California, 94304, USA
| | - Avnesh S Thakor
- Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Department of Radiology, Palo Alto, California, 94304, USA.
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12
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Kaddour N, Zhang D, Gao ZH, Liu JL. Recombinant protein CCN5/WISP2 promotes islet cell proliferation and survival in vitro. Growth Factors 2019; 37:120-130. [PMID: 31437074 DOI: 10.1080/08977194.2019.1652400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Pancreatic ß cell proliferation, survival and function are key elements that need to be considered in developing novel antidiabetic therapies. We recently identified CCN5/WISP2 to have potential growth promoting properties when overexpressed in ß cells; however, further investigations are needed to validate those properties. In this study, we demonstrated that exogenous treatment of insulinoma cells and primary islets with recombinant CCN5 (rh-CCN5) protein enhanced the proliferative capacity which was correlated with activation of cell-cycle regulators CDK4 and cyclin D1. Furthermore, pre-incubation of these cells with rh-CCN5 enhanced their survival rate after being exposed to harsh treatments such as streptozotocin and high concentrations of glucose and free fatty acids. CCN5 as well caused an upregulation in the expression of key genes associated with ß cell identity and function such as GLUT-2 and GCK. Finally, CCN5 activated FAK and downstream ERK kinases which are known to stimulate cell proliferation and survival. Hence, our results validate the growth promoting activities of rh-CCN5 in ß cells and open the door for further investigations in vivo.
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Affiliation(s)
- Nancy Kaddour
- Frasers Laboratories for Diabetes Research, Department of Medicine, McGill University Health Centre, Montreal, Canada
| | - Di Zhang
- Frasers Laboratories for Diabetes Research, Department of Medicine, McGill University Health Centre, Montreal, Canada
- Special Medicine Department, Medical College, Qingdao University, Qingdao, China
| | - Zu-Hua Gao
- Department of Pathology, McGill University Health Centre, Montreal, Canada
| | - Jun-Li Liu
- Frasers Laboratories for Diabetes Research, Department of Medicine, McGill University Health Centre, Montreal, Canada
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13
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Gardner LC, Grantham HJ, Reynolds NJ. IL-17 May Be a Key Cytokine Linking Psoriasis and Hyperglycemia. J Invest Dermatol 2019; 139:1214-1216. [DOI: 10.1016/j.jid.2019.02.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 02/22/2019] [Indexed: 12/13/2022]
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14
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Ikumi K, Odanaka M, Shime H, Imai M, Osaga S, Taguchi O, Nishida E, Hemmi H, Kaisho T, Morita A, Yamazaki S. Hyperglycemia Is Associated with Psoriatic Inflammation in Both Humans and Mice. J Invest Dermatol 2019; 139:1329-1338.e7. [PMID: 30776434 DOI: 10.1016/j.jid.2019.01.029] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 01/16/2019] [Accepted: 01/25/2019] [Indexed: 12/29/2022]
Abstract
Chronic low-grade inflammation can cause several metabolic syndromes. Patients with psoriasis, a chronic immunological skin inflammation, often develop diabetes. However, it is not clear to date how psoriasis leads to, or is correlated with, glucose intolerance. Here, we investigate whether psoriasis itself is correlated with hyperglycemia in humans and mice. In patients, the severity of psoriasis was correlated with high blood glucose levels, and treatment of psoriasis by phototherapy improved insulin secretion. Imiquimod-induced systemic and cutaneous inflammation in mice, with features of human psoriasis, also resulted in hyperglycemia. Although it should be determined if psoriasis-like cutaneous inflammation alone can induce hyperglycemia, imiquimod-treated mice showed impairment of insulin secretion without significant islet inflammation. Administration of anti-IL-17A monoclonal antibody improved hyperglycemia in patients with psoriasis and imiquimod-treated mice with psoriasiform features. These results suggest that hyperglycemia is highly associated with psoriasis, mainly through IL-17.
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Affiliation(s)
- Kyoko Ikumi
- Department of Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan; Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Mizuyu Odanaka
- Department of Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hiroaki Shime
- Department of Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Masaki Imai
- Department of Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Satoshi Osaga
- Clinical Research Management Center, Nagoya City University Hospital, Nagoya, Japan
| | - Osamu Taguchi
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Emi Nishida
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hiroaki Hemmi
- Department of Immunology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan; Laboratory for Immune Regulation, World Premier International Research Center Initiative, Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Tsuneyasu Kaisho
- Department of Immunology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan; Laboratory for Immune Regulation, World Premier International Research Center Initiative, Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Akimichi Morita
- Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
| | - Sayuri Yamazaki
- Department of Immunology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
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15
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Transgenerational effects of maternal bisphenol: a exposure on offspring metabolic health. J Dev Orig Health Dis 2018; 10:164-175. [PMID: 30362448 DOI: 10.1017/s2040174418000764] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Exposure to the endocrine disruptor bisphenol A (BPA) is ubiquitous and associated with health abnormalities that persist in subsequent generations. However, transgenerational effects of BPA on metabolic health are not widely studied. In a maternal C57BL/6J mice (F0) exposure model using BPA doses that are relevant to human exposure levels (10 μg/kg/day, LowerB; 10 mg/kg/day, UpperB), we showed male- and dose-specific effects on pancreatic islets of the first (F1) and second generation (F2) offspring relative to controls (7% corn oil diet; control). In this study, we determined the transgenerational effects (F3) of BPA on metabolic health and pancreatic islets in our model. Adult F3 LowerB and UpperB male offspring had increased body weight relative to Controls, however glucose tolerance was similar in the three groups. F3 LowerB, but not UpperB, males had reduced β-cell mass and smaller islets which was associated with increased glucose-stimulated insulin secretion. Similar to F1 and F2 BPA male offspring, staining for markers of T-cells and macrophages (CD3 and F4/80) was increased in pancreas of F3 LowerB and UpperB male offspring, which was associated with changes in cytokine levels. In contrast to F3 BPA males, LowerB and UpperB female offspring had comparable body weight, glucose tolerance and insulin secretion as Controls. Thus, maternal BPA exposure resulted in fewer metabolic defects in F3 than F1 and F2 offspring, and these were sex- and dose-specific.
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16
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Jiang Y, Fischbach S, Xiao X. The Role of the TGFβ Receptor Signaling Pathway in Adult Beta Cell Proliferation. Int J Mol Sci 2018; 19:ijms19103136. [PMID: 30322036 PMCID: PMC6212884 DOI: 10.3390/ijms19103136] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 10/09/2018] [Accepted: 10/10/2018] [Indexed: 12/19/2022] Open
Abstract
Diabetes is a global epidemic and affects millions of individuals in the United States. Devising novel treatments for diabetes continues to be a great medical challenge. Postnatal beta cell growth or compensation is largely attributed to beta cell proliferation, which declines continuously with age. To boost beta cell proliferation to regenerate an adequate functional mass, there is a need to understand the signaling pathways that regulate beta cell proliferation for creating practical strategies to promote the process. Transforming growth factor β (TGFβ) belongs to a signaling superfamily that governs pancreatic development and the regeneration of beta cells after pancreatic diseases. TGFβ exerts its functions by activation of downstream Smad proteins and through its crosstalk with other pathways. Accumulating data demonstrate that the TGFβ receptor signaling pathway also participates in the control of beta cell proliferation. This review details the role of the TGFβ receptor signaling pathway in beta cell proliferation physiologically and in the pathogenesis of diabetes.
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Affiliation(s)
- Yinan Jiang
- Division of Pediatric Surgery, Department of Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, 4401 Penn Ave, Pittsburgh, PA 15224, USA.
| | - Shane Fischbach
- Division of Pediatric Surgery, Department of Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, 4401 Penn Ave, Pittsburgh, PA 15224, USA.
- The Warren Alpert Medical School of Brown University, 222 Richmond Street, Providence, RI 02903, USA.
| | - Xiangwei Xiao
- Division of Pediatric Surgery, Department of Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, 4401 Penn Ave, Pittsburgh, PA 15224, USA.
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Arous C, Wehrle-Haller B. Role and impact of the extracellular matrix on integrin-mediated pancreatic β-cell functions. Biol Cell 2017; 109:223-237. [PMID: 28266044 DOI: 10.1111/boc.201600076] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 03/01/2017] [Accepted: 03/02/2017] [Indexed: 12/17/2022]
Abstract
Understanding the organisation and role of the extracellular matrix (ECM) in islets of Langerhans is critical for maintaining pancreatic β-cells, and to recognise and revert the physiopathology of diabetes. Indeed, integrin-mediated adhesion signalling in response to the pancreatic ECM plays crucial roles in β-cell survival and insulin secretion, two major functions, which are affected in diabetes. Here, we would like to present an update on the major components of the pancreatic ECM, their role during integrin-mediated cell-matrix adhesions and how they are affected during diabetes. To treat diabetes, a promising approach consists in replacing β-cells by transplantation. However, efficiency is low, because β-cells suffer of anoikis, due to enzymatic digestion of the pancreatic ECM, which affects the survival of insulin-secreting β-cells. The strategy of adding ECM components during transplantation, to reproduce the pancreatic microenvironment, is a challenging task, as many of the regulatory mechanisms that control ECM deposition and turnover are not sufficiently understood. A better comprehension of the impact of the ECM on the adhesion and integrin-dependent signalling in β-cells is primordial to improve the healthy state of islets to prevent the onset of diabetes as well as for enhancing the efficiency of the islet transplantation therapy.
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Affiliation(s)
- Caroline Arous
- Department of Cell Physiology and Metabolism, University of Geneva Medical Center, Geneva, Switzerland
| | - Bernhard Wehrle-Haller
- Department of Cell Physiology and Metabolism, University of Geneva Medical Center, Geneva, Switzerland
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Waseem M, Khan I, Iqbal H, Eijaz S, Usman S, Ahmed N, Alam G, Salim A. Hypoxic Preconditioning Improves the Therapeutic Potential of Aging Bone Marrow Mesenchymal Stem Cells in Streptozotocin-Induced Type-1 Diabetic Mice. Cell Reprogram 2016; 18:344-355. [PMID: 27500307 DOI: 10.1089/cell.2016.0002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Insulin replacement is the current therapeutic option for type-1 diabetes. However, exogenous insulin cannot precisely represent the normal pattern of insulin secretion. Another therapeutic strategy is transplantation of pancreatic islets, but this is limited by immune rejection, intrinsic complications, and lack of donor availability. Stem cell therapy that results in the regeneration of insulin-producing cells represents an attractive choice. However, with advancing age, stem cells also undergo senescence, which leads to changes in the function of various cellular processes that result in a decrease in the regeneration potential of these aging stem cells. In this study, the effect of young and aging mesenchymal stem cells (MSCs) on the regeneration of pancreatic beta cells in streptozotocin (STZ)-induced type-1 diabetic mice was observed after hypoxic preconditioning. Hypoxia was chemically induced by 2, 4-dinitrophenol (DNP). Plasma insulin and glucose levels were measured at various time intervals, and pancreatic sections were analyzed histochemically. The effect of DNP was also analyzed on apoptosis of MSCs by flow cytometry and on gene expression of certain growth factors by quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR). We observed that hypoxic preconditioning caused changes in the gene expression levels of growth factors in both young and aging MSCs. Young MSCs showed significant regeneration potential compared with the aging cells in vivo. However, hypoxic preconditioning was able to improve the regeneration potential of aging MSCs. It is concluded from the present study that the regeneration potential of aging MSCs into pancreatic β-cells can be enhanced by hypoxic preconditioning, which causes changes in the gene expression of certain growth factors.
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Affiliation(s)
- Muhammad Waseem
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Irfan Khan
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Hana'a Iqbal
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Sana Eijaz
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Shumaila Usman
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Nazia Ahmed
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Gulzar Alam
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Asmat Salim
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
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19
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Patry M, Teinturier R, Goehrig D, Zetu C, Ripoche D, Kim IS, Bertolino P, Hennino A. βig-h3 Represses T-Cell Activation in Type 1 Diabetes. Diabetes 2015; 64:4212-9. [PMID: 26470788 DOI: 10.2337/db15-0638] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Accepted: 10/07/2015] [Indexed: 11/13/2022]
Abstract
βig-h3/TGF-βi is a secreted protein capable of binding to both extracellular matrix and cells. Human genetic studies recently revealed that in the tgfbi gene encoding for βig-h3, three single nucleotide polymorphisms were significantly associated with type 1 diabetes (T1D) risk. Pancreatic islets express βig-h3 in physiological conditions, but this expression is reduced in β-cell insult in T1D. Since the integrity of islets is destroyed by autoimmune T lymphocytes, we thought to investigate the impact of βig-h3 on T-cell activation. We show here that βig-h3 inhibits T-cell activation markers as well as cytotoxic molecule production as granzyme B and IFN-γ. Furthermore, βig-h3 inhibits early T-cell receptor signaling by repressing the activation of the early kinase protein Lck. Moreover, βig-h3-treated T cells are unable to induce T1D upon transfer in Rag2 knockout mice. Our study demonstrates for the first time that T-cell activation is modulated by βig-h3, an islet extracellular protein, in order to efficiently avoid autoimmune response.
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MESH Headings
- Animals
- Autoimmunity/drug effects
- Biomarkers/metabolism
- Cadaver
- Cells, Cultured
- Diabetes Mellitus, Type 1/drug therapy
- Diabetes Mellitus, Type 1/immunology
- Diabetes Mellitus, Type 1/metabolism
- Diabetes Mellitus, Type 1/pathology
- Diabetes Mellitus, Type 2/drug therapy
- Diabetes Mellitus, Type 2/immunology
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/pathology
- Extracellular Matrix Proteins/genetics
- Extracellular Matrix Proteins/metabolism
- Extracellular Matrix Proteins/pharmacology
- Female
- Humans
- Hypoglycemic Agents/metabolism
- Hypoglycemic Agents/pharmacology
- Lymph Nodes/pathology
- Lymphocyte Activation/drug effects
- Lymphocyte Specific Protein Tyrosine Kinase p56(lck)/antagonists & inhibitors
- Lymphocyte Specific Protein Tyrosine Kinase p56(lck)/metabolism
- Mice, Inbred C57BL
- Mice, Inbred NOD
- Mice, Knockout
- Protein Kinase Inhibitors/metabolism
- Protein Kinase Inhibitors/pharmacology
- Receptors, Antigen, T-Cell/antagonists & inhibitors
- Receptors, Antigen, T-Cell/metabolism
- Recombinant Proteins/metabolism
- Recombinant Proteins/pharmacology
- Recombinant Proteins/therapeutic use
- Signal Transduction/drug effects
- Specific Pathogen-Free Organisms
- T-Lymphocytes/drug effects
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- T-Lymphocytes/pathology
- Transforming Growth Factor beta/genetics
- Transforming Growth Factor beta/metabolism
- Transforming Growth Factor beta/pharmacology
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Affiliation(s)
- Maeva Patry
- Cancer Research Center of Lyon, UMR INSERM 1052, CNRS 5286, Lyon, France Université Lyon 1, Lyon, France Centre Léon Bérard, Lyon, France
| | - Romain Teinturier
- Cancer Research Center of Lyon, UMR INSERM 1052, CNRS 5286, Lyon, France Université Lyon 1, Lyon, France Centre Léon Bérard, Lyon, France
| | - Delphine Goehrig
- Cancer Research Center of Lyon, UMR INSERM 1052, CNRS 5286, Lyon, France Université Lyon 1, Lyon, France Centre Léon Bérard, Lyon, France
| | - Cornelia Zetu
- National Institute of Diabetes, Nutrition and Metabolic Diseases "N. Paulescu," Bucharest, Romania
| | - Doriane Ripoche
- Cancer Research Center of Lyon, UMR INSERM 1052, CNRS 5286, Lyon, France Université Lyon 1, Lyon, France Centre Léon Bérard, Lyon, France
| | - In-San Kim
- Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, Korea KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, Korea
| | - Philippe Bertolino
- Cancer Research Center of Lyon, UMR INSERM 1052, CNRS 5286, Lyon, France Université Lyon 1, Lyon, France Centre Léon Bérard, Lyon, France
| | - Ana Hennino
- Cancer Research Center of Lyon, UMR INSERM 1052, CNRS 5286, Lyon, France Université Lyon 1, Lyon, France Centre Léon Bérard, Lyon, France
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20
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Tennant BR, Chen J, Shih AZL, Luciani DS, Hoffman BG. Myt3 Mediates Laminin-V/Integrin-β1-Induced Islet-Cell Migration via Tgfbi. Mol Endocrinol 2015; 29:1254-68. [PMID: 26177052 PMCID: PMC5414683 DOI: 10.1210/me.2014-1387] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Accepted: 07/10/2015] [Indexed: 12/17/2022] Open
Abstract
Myt3 is a prosurvival factor in pancreatic islets; however, its role in islet-cell development is not known. Here, we demonstrate that myelin transcription factor 3 (Myt3) is expressed in migrating islet cells in the developing and neonatal pancreas and thus sought to determine whether Myt3 plays a role in this process. Using an ex vivo model of islet-cell migration, we demonstrate that Myt3 suppression significantly inhibits laminin-V/integrin-β1-dependent α- and β-cell migration onto 804G, and impaired 804G-induced F-actin and E-cadherin redistribution. Exposure of islets to proinflammatory cytokines, which suppress Myt3 expression, had a similar effect, whereas Myt3 overexpression partially rescued the migratory ability of the islet cells. We show that loss of islet-cell migration, due to Myt3 suppression or cytokine exposure, is independent of effects on islet-cell survival or proliferation. Myt3 suppression also had no effect on glucose-induced calcium influx, F-actin remodeling or insulin secretion by β-cells. RNA-sequencing (RNA-seq) analysis of transduced islets showed that Myt3 suppression results in the up-regulation of Tgfbi, a secreted diabetogenic factor thought to impair cellular adhesion. Exposure of islets to exogenous transforming growth factor β-induced (Tgfbi) impaired islet-cell migration similar to Myt3 suppression. Taken together, these data suggest a model by which cytokine-induced Myt3 suppression leads to Tgfbi de-repression and subsequently to impaired islet-cell migration, revealing a novel role for Myt3 in regulating islet-cell migration.
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Affiliation(s)
- Bryan R Tennant
- Child and Family Research Institute (B.R.T., J.C., A.Z.L.S., D.S.L., B.G.H.), British Columbia Children's Hospital and Sunny Hill Health Centre, Vancouver, British Columbia, Canada V5Z 4H4; and Department of Surgery (D.S.L., B.G.H.), University of British Columbia, Vancouver, British Columbia, Canada V5Z 4E3
| | - Jenny Chen
- Child and Family Research Institute (B.R.T., J.C., A.Z.L.S., D.S.L., B.G.H.), British Columbia Children's Hospital and Sunny Hill Health Centre, Vancouver, British Columbia, Canada V5Z 4H4; and Department of Surgery (D.S.L., B.G.H.), University of British Columbia, Vancouver, British Columbia, Canada V5Z 4E3
| | - Alexis Z L Shih
- Child and Family Research Institute (B.R.T., J.C., A.Z.L.S., D.S.L., B.G.H.), British Columbia Children's Hospital and Sunny Hill Health Centre, Vancouver, British Columbia, Canada V5Z 4H4; and Department of Surgery (D.S.L., B.G.H.), University of British Columbia, Vancouver, British Columbia, Canada V5Z 4E3
| | - Dan S Luciani
- Child and Family Research Institute (B.R.T., J.C., A.Z.L.S., D.S.L., B.G.H.), British Columbia Children's Hospital and Sunny Hill Health Centre, Vancouver, British Columbia, Canada V5Z 4H4; and Department of Surgery (D.S.L., B.G.H.), University of British Columbia, Vancouver, British Columbia, Canada V5Z 4E3
| | - Brad G Hoffman
- Child and Family Research Institute (B.R.T., J.C., A.Z.L.S., D.S.L., B.G.H.), British Columbia Children's Hospital and Sunny Hill Health Centre, Vancouver, British Columbia, Canada V5Z 4H4; and Department of Surgery (D.S.L., B.G.H.), University of British Columbia, Vancouver, British Columbia, Canada V5Z 4E3
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21
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Abstract
Diabetes is a pandemic disease with a higher occurrence in minority populations. The molecular mechanism to initiate diabetes-associated retinal angiogenesis remains largely unknown. We propose an inflammatory pathway of diabetic retinopathy in which macrophages in the diabetic eye provide TGFβ to retinal endothelial cells (REC) in the retinal microvasculature. In response to TGFβ, REC synthesize and secrete a pro-apoptotic BIGH3 (TGFβ-Induced Gene Human Clone 3) protein, which acts in an autocrine loop to induce REC apoptosis. Rhesus monkey retinal endothelial cells (RhREC) were treated with dMCM (cell media of macrophages treated with high glucose and LDL) and assayed for apoptosis (TUNEL), BIGH3 mRNA (qPCR), and protein (Western blots) expressions. Cells were also treated with ΤGFβ1 and 2 for BIGH3 mRNA and protein expression. Inhibition assays were carried out using antibodies for TGFβ1 and for BIGH3 to block apoptosis and mRNA expression. BIGH3 in cultured RhREC cells were identified by immunohistochemistry (IHC). Distribution of BIGH3 and macrophages in the diabetic mouse retina was examined with IHC. RhRECs treated with dMCM or TGFβ showed a significant increase in apoptosis and BIGH3 protein expression. Recombinant BIGH3 added to RhREC culture medium led to a dose-dependent increase in apoptosis. Antibodies (Ab) directed against BIGH3 and TGFβ, as well as TGFβ receptor blocker resulted in a significant reduction in apoptosis induced by either dMCM, TGFβ or BIGH3. IHC showed that cultured RhREC constitutively expressed BIGH3. Macrophage and BIGH3 protein were co-localized to the inner retina of the diabetic mouse eye. Our results support a novel inflammatory pathway for diabetic retinopathy. This pathway is initiated by TGFβ released from macrophages, which promotes synthesis and release of BIGH3 protein by REC and REC apoptosis.
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22
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Han B, Cai H, Chen Y, Hu B, Luo H, Wu Y, Wu J. The role of TGFBI (βig-H3) in gastrointestinal tract tumorigenesis. Mol Cancer 2015; 14:64. [PMID: 25889002 PMCID: PMC4435624 DOI: 10.1186/s12943-015-0335-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2014] [Accepted: 03/09/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND TGFβ-induced (TGFBI/βig-H3) is a protein inducible by TGFβ1 and secreted by many types of cells. It binds to collagen, forms part of the extracellular matrix (ECM), and interacts with integrins on cell surfaces. In this study, we investigated the role of TGFBI in tumorigenesis and the underlying mechanisms. METHODS Patient serum TGFBI levels were determined by ELISA. TGFBI transgenic and gene knockout mice and TGFBI-overexpressing liver cells were used for mechanistic studies. RESULTS We demonstrated that patients with cholangiocarcinomas, hepatic carcinomas or gastric carcinomas presented significantly elevated serum TGFBI levels, and the excess TGFBI was derived from the tumor masses. TGFBI overexpression in mice resulted in increased incidence of spontaneous tumors and N,N-diethylnitrosamine (DEN)-induced liver tumor nodules, compared to that in wild type (WT) mice, while TGFBI knockout mice were comparable to WT controls in these 2 aspects. TGFBI promoted the survival of Aml-12 liver cells with DNA damage after irradiation, and augmented their post-irradiation proliferation. It activated the FAK/AKT/AKT1S1/PRS6/EIF4EBP pathway, which is known to modulate cell survival and proliferation. CONCLUSIONS Our data suggest that TGFBI functions as a promoter of certain gastrointestinal tract cancers. It provides a survival advantage to cells with DNA damage. Over a long time span, this advantage could translate into increased tumor risks.
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Affiliation(s)
- Bing Han
- Laboratory of Immunology and Cardiovascular Research, Centre hospitalier de l'Université de Montréal (CRCHUM), 900 Stain-Denis Street, Montreal, Quebec, Canada.
| | - Haolei Cai
- Department of Surgery, The Second Affiliated Hospital of Zhejiang University, 88 Jiefang Road, Hangzhou, China.
| | - Ying Chen
- Department of Surgery, The Second Affiliated Hospital of Zhejiang University, 88 Jiefang Road, Hangzhou, China.
| | - Bing Hu
- Anatomic Pathology, AmeriPath Central Florida, 8150 Chancellor Dr, Orlando, FL, USA.
| | - Hongyu Luo
- Laboratory of Immunology and Cardiovascular Research, Centre hospitalier de l'Université de Montréal (CRCHUM), 900 Stain-Denis Street, Montreal, Quebec, Canada.
| | - Yulian Wu
- Department of Surgery, The Second Affiliated Hospital of Zhejiang University, 88 Jiefang Road, Hangzhou, China.
| | - Jiangping Wu
- Laboratory of Immunology and Cardiovascular Research, Centre hospitalier de l'Université de Montréal (CRCHUM), 900 Stain-Denis Street, Montreal, Quebec, Canada. .,Nephrology Service, Research Centre, Centre hospitalier de l'Université de Montréal (CRCHUM), 900 Stain-Denis Street, Montreal, Quebec, Canada.
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23
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Orlando G, Gianello P, Salvatori M, Stratta RJ, Soker S, Ricordi C, Domínguez-Bendala J. Cell replacement strategies aimed at reconstitution of the β-cell compartment in type 1 diabetes. Diabetes 2014; 63:1433-44. [PMID: 24757193 DOI: 10.2337/db13-1742] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Emerging technologies in regenerative medicine have the potential to restore the β-cell compartment in diabetic patients, thereby overcoming the inadequacies of current treatment strategies and organ supply. Novel approaches include: 1) Encapsulation technology that protects islet transplants from host immune surveillance; 2) stem cell therapies and cellular reprogramming, which seek to regenerate the depleted β-cell compartment; and 3) whole-organ bioengineering, which capitalizes on the innate properties of the pancreas extracellular matrix to drive cellular repopulation. Collaborative efforts across these subfields of regenerative medicine seek to ultimately produce a bioengineered pancreas capable of restoring endocrine function in patients with insulin-dependent diabetes.
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24
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Han B, Luo H, Raelson J, Huang J, Li Y, Tremblay J, Hu B, Qi S, Wu J. TGFBI (βIG-H3) is a diabetes-risk gene based on mouse and human genetic studies. Hum Mol Genet 2014; 23:4597-611. [PMID: 24728038 DOI: 10.1093/hmg/ddu173] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Transforming growth factor beta-induced (TGFBI/βIG-H3), also known as βig-H3, is a protein inducible by TGFβ1 and secreted by many cell types. It binds to collagen, forms part of the extracellular matrix and interacts with integrins on the cell surface. Recombinant TGFBI and transgenic TGFBI overexpression can promote both islet survival and function. In this study, we generated TGFBI KO mice and further assessed TGFBI function and signaling pathways in islets. Islets from KO mice were of normal size and quantity, and these animals were normoglycemic. However, KO islet survival and function was compromised in vitro. In vivo, KO donor islets became inferior to wild-type donor islets in achieving normoglycemia when transplanted into KO diabetic recipients. TGFBI KO mice were more prone to straptozotocin-induced diabetes than the wild-type counterpart. Phosphoprotein array analysis established that AKT1S1, a molecule linking the AKT and mTORC1 signaling pathways, was modulated by TGFBI in islets. Phosphorylation of four molecules in the AKT and mTORC1 signaling pathway, i.e. AKT, AKT1S1, RPS6 and EIF4EBP1, was upregulated in islets upon TGFBI stimulation. Suppression of AKT activity by a chemical inhibitor, or knockdown of AKT1S1, RPS6 and EIF4EBP1 expression by small interfering RNA, modulated islet survival, proving the relevance of these molecules in TGFBI-triggered signaling. Human genetic studies revealed that in the TGFBI gene and its vicinity, three single-nucleotide polymorphisms were significantly associated with type 1 diabetes risks, and one with type 2 diabetes risks. Our study suggests that TGFBI is a potential risk gene for human diabetes.
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Affiliation(s)
| | | | | | - Jie Huang
- Department of Genetics and Biostatistics, University of North Carolina Chapel Hill, Chapel Hill, NC, USA and
| | - Yun Li
- Department of Genetics and Biostatistics, University of North Carolina Chapel Hill, Chapel Hill, NC, USA and
| | | | | | | | - Jiangping Wu
- Centre de Recherche and Service de Néphrologie, Centre Hospitalier de L'Université de Montréal (CRCHUM), Montréal, QC, Canada,
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25
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Salvatori M, Katari R, Patel T, Peloso A, Mugweru J, Owusu K, Orlando G. Extracellular Matrix Scaffold Technology for Bioartificial Pancreas Engineering: State of the Art and Future Challenges. J Diabetes Sci Technol 2014; 8:159-169. [PMID: 24876552 PMCID: PMC4454093 DOI: 10.1177/1932296813519558] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Emergent technologies in regenerative medicine may soon overcome the limitations of conventional diabetes therapies. Collaborative efforts across the subfields of stem cell technology, islet encapsulation, and biomaterial carriers seek to produce a bioengineered pancreas capable of restoring endocrine function in patients with insulin-dependent diabetes. These technologies rely on a robust understanding of the extracellular matrix (ECM), the supportive 3-dimensional network of proteins necessary for cellular attachment, proliferation, and differentiation. Although these functions can be partially approximated by biosynthetic carriers, novel decellularization protocols have allowed researchers to discover the advantages afforded by the native pancreatic ECM. The native ECM has proven to be an optimal platform for recellularization and whole-organ pancreas bioengineering, an exciting new field with the potential to resolve the dire shortage of transplantable organs. This review seeks to contextualize recent findings, discuss current research goals, and identify future challenges of regenerative medicine as it applies to diabetes management.
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Affiliation(s)
| | - Ravi Katari
- Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Timil Patel
- Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Andrea Peloso
- Wake Forest School of Medicine, Winston-Salem, NC, USA Department of Surgery, School of Medicine, University of Pavia, Pavia, Italy
| | - Jon Mugweru
- Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Kofi Owusu
- Wake Forest School of Medicine, Winston-Salem, NC, USA
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26
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Xiao X, Wiersch J, El-Gohary Y, Guo P, Prasadan K, Paredes J, Welsh C, Shiota C, Gittes GK. TGFβ receptor signaling is essential for inflammation-induced but not β-cell workload-induced β-cell proliferation. Diabetes 2013; 62:1217-26. [PMID: 23248173 PMCID: PMC3609557 DOI: 10.2337/db12-1428] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Protection and restoration of a functional β-cell mass are fundamental strategies for prevention and treatment of diabetes. Consequently, knowledge of signals that determine the functional β-cell mass is of immense clinical relevance. Transforming growth factor β (TGFβ) superfamily signaling pathways play a critical role in development and tissue specification. Nevertheless, the role of these pathways in adult β-cell homeostasis is not well defined. Here, we ablated TGFβ receptor I and II genes in mice undergoing two surgical β-cell replication models (partial pancreatectomy or partial duct ligation), representing two triggers for β-cell proliferation, increased β-cell workload and local inflammation, respectively. Our data suggest that TGFβ receptor signaling is necessary for baseline β-cell proliferation. By either provision of excess glucose or treatment with exogenous insulin, we further demonstrated that inflammation and increased β-cell workload are both stimulants for β-cell proliferation but are TGFβ receptor signaling dependent and independent, respectively. Collectively, by using a pancreas-specific TGFβ receptor-deleted mouse model, we have identified two distinct pathways that regulate adult β-cell proliferation. Our study thus provides important information for understanding β-cell proliferation during normal growth and in pancreatic diseases.
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Affiliation(s)
- Xiangwei Xiao
- Division of Pediatric Surgery, Children’s Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
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