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Qadir MMF, Elgamal RM, Song K, Kudtarkar P, Sakamuri SS, Katakam PV, El-Dahr S, Kolls J, Gaulton KJ, Mauvais-Jarvis F. Single cell regulatory architecture of human pancreatic islets suggests sex differences in β cell function and the pathogenesis of type 2 diabetes. bioRxiv 2024:2024.04.11.589096. [PMID: 38645001 PMCID: PMC11030320 DOI: 10.1101/2024.04.11.589096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
Biological sex affects the pathogenesis of type 2 and type 1 diabetes (T2D, T1D) including the development of β cell failure observed more often in males. The mechanisms that drive sex differences in β cell failure is unknown. Studying sex differences in islet regulation and function represent a unique avenue to understand the sex-specific heterogeneity in β cell failure in diabetes. Here, we examined sex and race differences in human pancreatic islets from up to 52 donors with and without T2D (including 37 donors from the Human Pancreas Analysis Program [HPAP] dataset) using an orthogonal series of experiments including single cell RNA-seq (scRNA-seq), single nucleus assay for transposase-accessible chromatin sequencing (snATAC-seq), dynamic hormone secretion, and bioenergetics. In cultured islets from nondiabetic (ND) donors, in the absence of the in vivo hormonal environment, sex differences in islet cell type gene accessibility and expression predominantly involved sex chromosomes. Of particular interest were sex differences in the X-linked KDM6A and Y-linked KDM5D chromatin remodelers in female and male islet cells respectively. Islets from T2D donors exhibited similar sex differences in differentially expressed genes (DEGs) from sex chromosomes. However, in contrast to islets from ND donors, islets from T2D donors exhibited major sex differences in DEGs from autosomes. Comparing β cells from T2D and ND donors revealed that females had more DEGs from autosomes compared to male β cells. Gene set enrichment analysis of female β cell DEGs showed a suppression of oxidative phosphorylation and electron transport chain pathways, while male β cell had suppressed insulin secretion pathways. Thus, although sex-specific differences in gene accessibility and expression of cultured ND human islets predominantly affect sex chromosome genes, major differences in autosomal gene expression between sexes appear during the transition to T2D and which highlight mitochondrial failure in female β cells.
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Affiliation(s)
- Mirza Muhammad Fahd Qadir
- Section of Endocrinology and Metabolism, John W. Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
- Southeast Louisiana Veterans Health Care System, New Orleans, LA, USA
- Tulane Center of Excellence in Sex-Based Biology & Medicine, New Orleans, LA, USA
| | - Ruth M. Elgamal
- Biomedical Sciences Graduate Program, University of California, San Diego, La Jolla, CA, USA
- Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA
| | - Keijing Song
- Center for Translational Research in Infection and Inflammation, John W. Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Parul Kudtarkar
- Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA
| | - Siva S.V.P Sakamuri
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, LA, USA
| | - Prasad V. Katakam
- Department of Pharmacology, Tulane University School of Medicine, New Orleans, LA, USA
| | - Samir El-Dahr
- Department of Pediatrics, Tulane University, School of Medicine, New Orleans, LA, USA
| | - Jay Kolls
- Center for Translational Research in Infection and Inflammation, John W. Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
| | - Kyle J. Gaulton
- Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA
| | - Franck Mauvais-Jarvis
- Section of Endocrinology and Metabolism, John W. Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA, USA
- Southeast Louisiana Veterans Health Care System, New Orleans, LA, USA
- Tulane Center of Excellence in Sex-Based Biology & Medicine, New Orleans, LA, USA
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2
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Elgamal RM, Kudtarkar P, Melton RL, Mummey HM, Benaglio P, Okino ML, Gaulton KJ. An Integrated Map of Cell Type-Specific Gene Expression in Pancreatic Islets. Diabetes 2023; 72:1719-1728. [PMID: 37582230 PMCID: PMC10588282 DOI: 10.2337/db23-0130] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 08/03/2023] [Indexed: 08/17/2023]
Abstract
Pancreatic islets consist of multiple cell types that produce hormones required for glucose homeostasis, and islet dysfunction is a major factor in type 1 and type 2 diabetes. Numerous studies have assessed transcription across individual cell types using single-cell assays; however, there is no canonical reference of gene expression in islet cell types that is also easily accessible for researchers to query and use in bioinformatics pipelines. Here we present an integrated map of islet cell type-specific gene expression from 192,203 cells from single-cell RNA sequencing of 65 donors without diabetes, donors who were type 1 diabetes autoantibody positive, donors with type 1 diabetes, and donors with type 2 diabetes from the Human Pancreas Analysis Program. We identified 10 distinct cell types, annotated subpopulations of several cell types, and defined cell type-specific marker genes. We tested differential expression within each cell type across disease states and identified 1,701 genes with significant changes in expression, with most changes observed in β-cells from donors with type 1 diabetes. To facilitate user interaction, we provide several single-cell visualization and reference mapping tools, as well as the open-access analytical pipelines used to create this reference. The results will serve as a valuable resource to investigators studying islet biology. ARTICLE HIGHLIGHTS
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Affiliation(s)
- Ruth M. Elgamal
- Biomedical Sciences Graduate Program, University of California, San Diego, La Jolla, CA
| | - Parul Kudtarkar
- Department of Pediatrics, University of California, San Diego, La Jolla, CA
| | - Rebecca L. Melton
- Biomedical Sciences Graduate Program, University of California, San Diego, La Jolla, CA
| | - Hannah M. Mummey
- Bioinformatics and Systems Biology Graduate Program, University of California, San Diego, La Jolla, CA
| | - Paola Benaglio
- Department of Pediatrics, University of California, San Diego, La Jolla, CA
| | - Mei-Lin Okino
- Biomedical Sciences Graduate Program, University of California, San Diego, La Jolla, CA
| | - Kyle J. Gaulton
- Department of Pediatrics, University of California, San Diego, La Jolla, CA
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3
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Elgamal RM, Kudtarkar P, Melton RL, Mummey HM, Benaglio P, Okino ML, Gaulton KJ. An integrated map of cell type-specific gene expression in pancreatic islets. bioRxiv 2023:2023.02.03.526994. [PMID: 36778506 PMCID: PMC9915747 DOI: 10.1101/2023.02.03.526994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Pancreatic islets are comprised of multiple endocrine cell types that produce hormones required for glucose homeostasis, and islet dysfunction is a major factor in the development of type 1 and type 2 diabetes (T1D, T2D). Numerous studies have generated gene expression profiles in individual islet cell types using single cell assays. However, there is no canonical reference of gene expression in islet cell types in both health and disease that is also easily accessible for researchers to access, query, and use in bioinformatics pipelines. Here we present an integrated reference map of islet cell type-specific gene expression from 192,203 cells derived from single cell RNA-seq assays of 65 non-diabetic, T1D autoantibody positive (Aab+), T1D, and T2D donors from the Human Pancreas Analysis Program. We identified 10 endocrine and non-endocrine cell types as well as sub-populations of several cell types, and defined sets of marker genes for each cell type and sub-population. We tested for differential expression within each cell type in T1D Aab+, T1D, and T2D states, and identified 1,701 genes with significant changes in expression in any cell type. Most changes were observed in beta cells in T1D, and, by comparison, there were almost no genes with changes in T1D Aab+. To facilitate user interaction with this reference, we provide the data using several single cell visualization and reference mapping tools as well as open-access analytical pipelines used to create this reference. The results will serve as a valuable resource to investigators studying islet biology and diabetes.
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Affiliation(s)
- Ruth M Elgamal
- Biomedical Sciences graduate program, University of California San Diego, La Jolla CA
| | - Parul Kudtarkar
- Department of Pediatrics, University of California San Diego, La Jolla CA
| | - Rebecca L Melton
- Biomedical Sciences graduate program, University of California San Diego, La Jolla CA
| | - Hannah M Mummey
- Bioinformatics and Systems Biology graduate program, University of California San Diego, La Jolla CA
| | - Paola Benaglio
- Department of Pediatrics, University of California San Diego, La Jolla CA
| | - Mei-Lin Okino
- Biomedical Sciences graduate program, University of California San Diego, La Jolla CA
| | - Kyle J Gaulton
- Department of Pediatrics, University of California San Diego, La Jolla CA
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4
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Lee M, Maji B, Manna D, Kahraman S, Elgamal RM, Small J, Kokkonda P, Vetere A, Goldberg JM, Lippard SJ, Kulkarni RN, Wagner BK, Choudhary A. Native Zinc Catalyzes Selective and Traceless Release of Small Molecules in β-Cells. J Am Chem Soc 2020; 142:6477-6482. [PMID: 32175731 PMCID: PMC7146867 DOI: 10.1021/jacs.0c00099] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
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The loss of insulin-producing β-cells
is the central pathological
event in type 1 and 2 diabetes, which has led to efforts to identify
molecules to promote β-cell proliferation, protection, and imaging.
However, the lack of β-cell specificity of these molecules jeopardizes
their therapeutic potential. A general platform for selective release
of small-molecule cargoes in β-cells over other islet cells ex vivo or other cell-types in an organismal context will
be immensely valuable in advancing diabetes research and therapeutic
development. Here, we leverage the unusually high Zn(II) concentration
in β-cells to develop a Zn(II)-based prodrug system to selectively
and tracelessly deliver bioactive small molecules and fluorophores
to β-cells. The Zn(II)-targeting mechanism enriches the inactive
cargo in β-cells as compared to other pancreatic cells; importantly,
Zn(II)-mediated hydrolysis triggers cargo activation. This prodrug
system, with modular components that allow for fine-tuning selectivity,
should enable the safer and more effective targeting of β-cells.
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Affiliation(s)
- Miseon Lee
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Basudeb Maji
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States.,Divisions of Renal Medicine and Engineering, Brigham and Women's Hospital, Boston, Massachusetts 02115, United States
| | - Debasish Manna
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States.,Divisions of Renal Medicine and Engineering, Brigham and Women's Hospital, Boston, Massachusetts 02115, United States
| | - Sevim Kahraman
- Islet Cell and Regenerative Biology, Joslin Diabetes Center, Boston, Massachusetts 02215, United States.,Harvard Stem Cell InstituteHarvard Medical School, Cambridge, Massachusetts 02138, United States
| | - Ruth M Elgamal
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States.,Divisions of Renal Medicine and Engineering, Brigham and Women's Hospital, Boston, Massachusetts 02115, United States
| | - Jonnell Small
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States.,Chemical Biology Program, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Praveen Kokkonda
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Amedeo Vetere
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Jacob M Goldberg
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Stephen J Lippard
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Rohit N Kulkarni
- Islet Cell and Regenerative Biology, Joslin Diabetes Center, Boston, Massachusetts 02215, United States.,Harvard Stem Cell InstituteHarvard Medical School, Cambridge, Massachusetts 02138, United States
| | - Bridget K Wagner
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States
| | - Amit Choudhary
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, Massachusetts 02142, United States.,Divisions of Renal Medicine and Engineering, Brigham and Women's Hospital, Boston, Massachusetts 02115, United States.,Chemical Biology Program, Harvard University, Cambridge, Massachusetts 02138, United States
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5
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Kuljanin M, Elgamal RM, Bell GI, Xenocostas A, Lajoie GA, Hess DA. Human Multipotent Stromal Cell Secreted Effectors Accelerate Islet Regeneration. Stem Cells 2019; 37:516-528. [DOI: 10.1002/stem.2976] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 11/12/2018] [Accepted: 12/28/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Miljan Kuljanin
- Don Rix Protein Identification Facility, Department of Biochemistry, Schulich School of Medicine & Dentistry; Western University; London Ontario Canada
- Krembil Centre for Stem Cell Biology, Molecular Medicine Research Laboratories; Robarts Research Institute; London Ontario Canada
| | - Ruth M. Elgamal
- Krembil Centre for Stem Cell Biology, Molecular Medicine Research Laboratories; Robarts Research Institute; London Ontario Canada
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry; Western University; London Ontario Canada
| | - Gillian I. Bell
- Krembil Centre for Stem Cell Biology, Molecular Medicine Research Laboratories; Robarts Research Institute; London Ontario Canada
| | - Anargyros Xenocostas
- Department of Medicine, Division of Haematology, Schulich School of Medicine and Dentistry; Western University; London Ontario Canada
| | - Gilles A. Lajoie
- Don Rix Protein Identification Facility, Department of Biochemistry, Schulich School of Medicine & Dentistry; Western University; London Ontario Canada
| | - David A. Hess
- Krembil Centre for Stem Cell Biology, Molecular Medicine Research Laboratories; Robarts Research Institute; London Ontario Canada
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry; Western University; London Ontario Canada
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Elgamal RM, Bell GI, Krause SCT, Hess DA. BMS 493 Modulates Retinoic Acid-Induced Differentiation During Expansion of Human Hematopoietic Progenitor Cells for Islet Regeneration. Stem Cells Dev 2018; 27:1062-1075. [PMID: 29737242 DOI: 10.1089/scd.2018.0020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Cellular therapies are emerging as a novel treatment strategy for diabetes. Thus, the induction of endogenous islet regeneration in situ represents a feasible goal for diabetes therapy. Umbilical cord blood-derived hematopoietic progenitor cells (HPCs), isolated by high aldehyde dehydrogenase activity (ALDHhi), have previously been shown to reduce hyperglycemia after intrapancreatic (iPan) transplantation into streptozotocin (STZ)-treated nonobese diabetic (NOD)/severe combined immunodeficiency (SCID) mice. However, these cells are rare and require ex vivo expansion to reach clinically applicable numbers for human therapy. Therefore, we investigated whether BMS 493, an inverse retinoic acid receptor agonist, could prevent retinoic acid-induced differentiation and preserve islet regenerative functions during expansion. After 6-day expansion, BMS 493-treated cells showed a twofold increase in the number of ALDHhi cells available for transplantation compared with untreated controls. Newly expanded ALDHhi cells showed increased numbers of CD34 and CD133-positive cells, as well as a reduction in CD38 expression, a marker of hematopoietic cell differentiation. BMS 493-treated cells showed similar hematopoietic colony-forming capacity compared with untreated cells, with ALDHhi subpopulations producing more colonies than low aldehyde dehydrogenase activity subpopulations for expanded cells. To determine if the secreted proteins of these cells could augment the survival and/or proliferation of β-cells in vitro, conditioned media (CM) from cells expanded with or without BMS 493 was added to human islet cultures. The total number of proliferating β-cells was increased after 3- or 7-day culture with CM generated from BMS 493-treated cells. In contrast to freshly isolated ALDHhi cells, 6-day expansion with or without BMS 493 generated progeny that were unable to reduce hyperglycemia after iPan transplantation into STZ-treated NOD/SCID mice. Further strategies to reduce retinoic acid differentiation during HPC expansion is required to expand ALDHhi cells without the loss of islet regenerative functions.
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Affiliation(s)
- Ruth M Elgamal
- 1 Department of Physiology and Pharmacology, The University of Western Ontario , London, Canada
| | - Gillian I Bell
- 2 Krembil Centre for Stem Cell Biology, Robarts Research Institute, The University of Western Ontario , London, Canada
| | - Sarah C T Krause
- 2 Krembil Centre for Stem Cell Biology, Robarts Research Institute, The University of Western Ontario , London, Canada
| | - David A Hess
- 1 Department of Physiology and Pharmacology, The University of Western Ontario , London, Canada .,2 Krembil Centre for Stem Cell Biology, Robarts Research Institute, The University of Western Ontario , London, Canada
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