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Ramirez M, Bastien E, Chae H, Gianello P, Gilon P, Bouzin C. 3D evaluation of the extracellular matrix of hypoxic pancreatic islets using light sheet fluorescence microscopy. Islets 2024; 16:2298518. [PMID: 38267218 PMCID: PMC10810165 DOI: 10.1080/19382014.2023.2298518] [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: 08/02/2023] [Accepted: 12/19/2023] [Indexed: 01/26/2024] Open
Abstract
Pancreatic islet transplantation is a promising treatment for type 1 diabetes, but the survival and function of transplanted islets are hindered by the loss of extracellular matrix (ECM) during islet isolation and by low oxygenation upon implantation. This study aimed to evaluate the impact of hypoxia on ECM using a cutting-edge imaging approach based on tissue clearing and 3D microscopy. Human and rat islets were cultured under normoxic (O2 21%) or hypoxic (O2 1%) conditions. Immunofluorescence staining targeting insulin, glucagon, CA9 (a hypoxia marker), ECM proteins (collagen 4, fibronectin, laminin), and E-cadherin (intercellular adhesion protein) was performed on fixed whole islets. The cleared islets were imaged using Light Sheet Fluorescence Microscopy (LSFM) and digitally analyzed. The volumetric analysis of target proteins did not show significant differences in abundance between the experimental groups. However, 3D projections revealed distinct morphological features that differentiated normoxic and hypoxic islets. Under normoxic conditions, ECM could be found throughout the islets. Hypoxic islets exhibited areas of scattered nuclei and central clusters of ECM proteins, indicating central necrosis. E-cadherin was absent in these areas. Our results, demonstrating a diminution of islets' functional mass in hypoxia, align with the functional decline observed in transplanted islets experiencing low oxygenation after grafting. This study provides a methodology combining tissue clearing, multiplex immunofluorescence, Light Sheet Fluorescence Microscopy, and digital image analysis to investigate pancreatic islet morphology. This 3D approach allowed us to highlight ECM organizational changes during hypoxia from a morphological perspective.
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Affiliation(s)
- Matias Ramirez
- Pole of Experimental Surgery and Transplantation, Institute of Experimental and Clinical Research, Université catholique de Louvain, Brussels, Belgium
| | - Estelle Bastien
- Pole of Pharmacology and Therapeutics, Institute of Experimental and Clinical Research, Université catholique de Louvain, Brussels, Belgium
| | - Heeyoung Chae
- Pole of Endocrinology, Diabetes and Nutrition, Institute of Experimental and Clinical Research, Université catholique de Louvain, Brussels, Belgium
| | - Pierre Gianello
- Laboratory of Experimental Surgery and Transplantation, Institute of Experimental and Clinical Research, Université catholique de Louvain, Brussels, Belgium
| | - Patrick Gilon
- Pole of Endocrinology, Diabetes and Nutrition, Institute of Experimental and Clinical Research, Université catholique de Louvain, Brussels, Belgium
| | - Caroline Bouzin
- Institute of Experimental and Clinical Research, Université catholique de Louvain, Brussels, Brussels, Belgium
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2
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Lyon JG, Carr ALJ, Smith NP, Marfil-Garza B, Spigelman AF, Bautista A, O’Gorman D, Kin T, Shapiro AMJ, Senior PA, MacDonald PE. Human research islet cell culture outcomes at the Alberta Diabetes Institute IsletCore. Islets 2024; 16:2385510. [PMID: 39097865 PMCID: PMC11299626 DOI: 10.1080/19382014.2024.2385510] [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: 06/18/2024] [Revised: 07/24/2024] [Accepted: 07/24/2024] [Indexed: 08/05/2024] Open
Abstract
Human islets from deceased organ donors have made important contributions to our understanding of pancreatic endocrine function and continue to be an important resource for research studies aimed at understanding, treating, and preventing diabetes. Understanding the impacts of isolation and culture upon the yield of human islets for research is important for planning research studies and islet distribution to distant laboratories. Here, we examine islet isolation and cell culture outcomes at the Alberta Diabetes Institute (ADI) IsletCore (n = 197). Research-focused isolations typically have a lower yield of islet equivalents (IEQ), with a median of 252,876 IEQ, but a higher purity (median 85%) than clinically focused isolations before culture. The median recovery of IEQs after culture was 75%, suggesting some loss. This was associated with a shift toward smaller islet particles, indicating possible islet fragmentation, and occurred within 24 h with no further loss after longer periods of culture (up to 136 h). No overall change in stimulation index as a measure of islet function was seen with culture time. These findings were replicated in a representative cohort of clinical islet preparations from the Clinical Islet Transplant Program at the University of Alberta. Thus, loss of islets occurs within 24 h of isolation, and there is no further impact of extended culture prior to islet distribution for research.
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Affiliation(s)
- James G Lyon
- Alberta Diabetes Institute, University of Alberta, Edmonton, AB, Canada
| | - Alice LJ Carr
- Alberta Diabetes Institute, University of Alberta, Edmonton, AB, Canada
- Department of Surgery, University of Alberta, Edmonton, Canada
| | - Nancy P Smith
- Alberta Diabetes Institute, University of Alberta, Edmonton, AB, Canada
- Department of Pharmacology, University of Alberta, Edmonton, Canada
| | - Braulio Marfil-Garza
- Alberta Diabetes Institute, University of Alberta, Edmonton, AB, Canada
- Department of Surgery, University of Alberta, Edmonton, Canada
- The Institute for Obesity Research, Tecnologico de Monterrey, Monterrey, Nuevo Leon, Mexico
| | - Aliya F Spigelman
- Alberta Diabetes Institute, University of Alberta, Edmonton, AB, Canada
- Department of Pharmacology, University of Alberta, Edmonton, Canada
| | - Austin Bautista
- Alberta Diabetes Institute, University of Alberta, Edmonton, AB, Canada
- Department of Pharmacology, University of Alberta, Edmonton, Canada
| | - Doug O’Gorman
- Clinical Islet Transplant Program, University of Alberta, Edmonton, Canada
| | - Tatsuya Kin
- Alberta Diabetes Institute, University of Alberta, Edmonton, AB, Canada
- Department of Surgery, University of Alberta, Edmonton, Canada
- Clinical Islet Transplant Program, University of Alberta, Edmonton, Canada
| | - AM James Shapiro
- Alberta Diabetes Institute, University of Alberta, Edmonton, AB, Canada
- Department of Surgery, University of Alberta, Edmonton, Canada
- Clinical Islet Transplant Program, University of Alberta, Edmonton, Canada
| | - Peter A Senior
- Alberta Diabetes Institute, University of Alberta, Edmonton, AB, Canada
- Department of Medicine, University of Alberta, Edmonton, Canada
| | - Patrick E MacDonald
- Alberta Diabetes Institute, University of Alberta, Edmonton, AB, Canada
- Department of Pharmacology, University of Alberta, Edmonton, Canada
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3
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Zhu Y, Yang M, Xu W, Zhang Y, Pan L, Wang L, Wang F, Lu Y. The collagen matrix regulates the survival and function of pancreatic islets. Endocrine 2024; 83:537-547. [PMID: 37999835 DOI: 10.1007/s12020-023-03592-4] [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: 07/06/2023] [Accepted: 10/30/2023] [Indexed: 11/25/2023]
Abstract
The extracellular matrix (ECM) provides an appropriate microenvironment for many kinds of cells, including pancreatic cells. Collagens are the most abundant components of the ECM. Type I, IV, V and VI collagen has been detected in pancreatic islets, and each type plays important role in the proliferation, survival, function and differentiation of pancreatic cells. In some cases, collagens show behaviours similar to those of growth factors and regulate the biological behaviour of β cells by binding with certain growth factors, including IGFs, EGFs and FGFs. The transcriptional coactivator YAP/TAZ has been widely recognised as a mechanosensor that senses changes in the physical characteristics of the ECM and inhibition of YAP/TAZ enhances insulin production and secretion. Type 1 diabetes mellitus (T1DM) is an autoimmune disease characterised by the destruction of insulin-producing β cells. The crosstalk between collagens and immune cells plays a key role in the development and differentiation of immune cells. Further, Supplementation with collagens during islet transplantation is a promising strategy for improving the quality of the islets. But, excessive collagen deposition results in pancreatic fibrosis and pancreatic carcinoma. Targeting inhibit Piezo, autophagy or IL-6 may reduce excessive collagen deposition-induced pancreatic fibrosis and pancreatic carcinoma. This review provides insights into the treatment of T1DM to prolong life expectancy and provides the potential targets for treating collagen deposition-induced pancreatic fibrosis and pancreatic carcinoma.
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Affiliation(s)
- Yingying Zhu
- Traditional Chinese Medical college, Shandong University of Traditional Chinese Medicine, Jinan, 250300, Shandong, China
| | - Mei Yang
- Traditional Chinese Medical college, Shandong University of Traditional Chinese Medicine, Jinan, 250300, Shandong, China
| | - Wanli Xu
- Traditional Chinese Medical college, Shandong University of Traditional Chinese Medicine, Jinan, 250300, Shandong, China
| | - Yun Zhang
- Traditional Chinese Medical college, Shandong University of Traditional Chinese Medicine, Jinan, 250300, Shandong, China
| | - Linlin Pan
- Traditional Chinese Medical college, Shandong University of Traditional Chinese Medicine, Jinan, 250300, Shandong, China
| | - Lina Wang
- Traditional Chinese Medical college, Shandong University of Traditional Chinese Medicine, Jinan, 250300, Shandong, China
| | - Furong Wang
- Traditional Chinese Medical college, Shandong University of Traditional Chinese Medicine, Jinan, 250300, Shandong, China.
| | - Yanting Lu
- Traditional Chinese Medical college, Shandong University of Traditional Chinese Medicine, Jinan, 250300, Shandong, China.
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4
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Marchini A, Ciulla MG, Antonioli B, Agnoli A, Bovio U, Visnoviz V, Bertuzzi F, Gelain F. Long-term cultures of human pancreatic islets in self-assembling peptides hydrogels. Front Bioeng Biotechnol 2023; 11:1105157. [PMID: 36911193 PMCID: PMC9995881 DOI: 10.3389/fbioe.2023.1105157] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 02/13/2023] [Indexed: 02/25/2023] Open
Abstract
Human pancreatic islets transplantation is an experimental therapeutic treatment for Type I Diabetes. Limited islets lifespan in culture remains the main drawback, due to the absence of native extracellular matrix as mechanical support after their enzymatic and mechanical isolation procedure. Extending the limited islets lifespan by creating a long-term in vitro culture remains a challenge. In this study, three biomimetic self-assembling peptides were proposed as potential candidates to recreate in vitro a pancreatic extracellular matrix, with the aim to mechanically and biologically support human pancreatic islets, by creating a three-dimensional culture system. The embedded human islets were analyzed for morphology and functionality in long-term cultures (14-and 28-days), by evaluating β-cells content, endocrine component, and extracellular matrix constituents. The three-dimensional support provided by HYDROSAP scaffold, and cultured into MIAMI medium, displayed a preserved islets functionality, a maintained rounded islets morphology and an invariable islets diameter up to 4 weeks, with results analogues to freshly-isolated islets. In vivo efficacy studies of the in vitro 3D cell culture system are ongoing; however, preliminary data suggest that human pancreatic islets pre-cultured for 2 weeks in HYDROSAP hydrogels and transplanted under subrenal capsule may restore normoglycemia in diabetic mice. Therefore, engineered self-assembling peptide scaffolds may provide a useful platform for long-term maintenance and preservation of functional human pancreatic islets in vitro.
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Affiliation(s)
- Amanda Marchini
- Institute for Stem-Cell Biology, Regenerative Medicine and Innovative Therapies (ISBReMIT), IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Maria Gessica Ciulla
- Institute for Stem-Cell Biology, Regenerative Medicine and Innovative Therapies (ISBReMIT), IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy.,Center for Nanomedicine and Tissue Engineering (CNTE), ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - Barbara Antonioli
- Tissue Bank and Tissue Therapy Unit, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - Alessandro Agnoli
- Department of Biotechnology and Bioscience, University of Milan-Bicocca, Milan, Italy
| | - Umberto Bovio
- Department of Biotechnology and Bioscience, University of Milan-Bicocca, Milan, Italy
| | | | - Federico Bertuzzi
- Department of Diabetology, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - Fabrizio Gelain
- Institute for Stem-Cell Biology, Regenerative Medicine and Innovative Therapies (ISBReMIT), IRCCS Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy.,Center for Nanomedicine and Tissue Engineering (CNTE), ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
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5
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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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6
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Yan LL, Ye LP, Chen YH, He SQ, Zhang CY, Mao XL, Li SW. The Influence of Microenvironment on Survival of Intraportal Transplanted Islets. Front Immunol 2022; 13:849580. [PMID: 35418988 PMCID: PMC8995531 DOI: 10.3389/fimmu.2022.849580] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 03/03/2022] [Indexed: 12/21/2022] Open
Abstract
Clinical islet transplantation has the potential to cure type 1 diabetes. Despite recent therapeutic success, it is still uncommon because transplanted islets are damaged by multiple challenges, including instant blood mediated inflammatory reaction (IBMIR), inflammatory cytokines, hypoxia/reperfusion injury, and immune rejection. The transplantation microenvironment plays a vital role especially in intraportal islet transplantation. The identification and targeting of pathways that function as "master regulators" during deleterious inflammatory events after transplantation, and the induction of immune tolerance, are necessary to improve the survival of transplanted islets. In this article, we attempt to provide an overview of the influence of microenvironment on the survival of transplanted islets, as well as possible therapeutic targets.
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Affiliation(s)
- Ling-ling Yan
- Key Laboratory of Minimally Invasive Techniques & Rapid Rehabilitation of Digestive System Tumor of Zhejiang Province, Taizhou Hospital Affiliated to Wenzhou Medical University, Linhai, China
- Department of Gastroenterology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Li-ping Ye
- Key Laboratory of Minimally Invasive Techniques & Rapid Rehabilitation of Digestive System Tumor of Zhejiang Province, Taizhou Hospital Affiliated to Wenzhou Medical University, Linhai, China
- Department of Gastroenterology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
- Institute of Digestive Disease, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Ya-hong Chen
- Health Management Center, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Sai-qin He
- Department of Gastroenterology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Chen-yang Zhang
- Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Xin-li Mao
- Key Laboratory of Minimally Invasive Techniques & Rapid Rehabilitation of Digestive System Tumor of Zhejiang Province, Taizhou Hospital Affiliated to Wenzhou Medical University, Linhai, China
- Department of Gastroenterology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
- Institute of Digestive Disease, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
| | - Shao-wei Li
- Key Laboratory of Minimally Invasive Techniques & Rapid Rehabilitation of Digestive System Tumor of Zhejiang Province, Taizhou Hospital Affiliated to Wenzhou Medical University, Linhai, China
- Department of Gastroenterology, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
- Institute of Digestive Disease, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, China
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