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Liu L, Ei K, Dattaroy D, Barella LF, Cui Y, Gray SM, Guedikian C, Chen M, Weinstein LS, Knuth E, Jin E, Merrins MJ, Roman J, Kaestner KH, Doliba N, Campbell JE, Wess J. Intra-islet α-cell Gs signaling promotes glucagon release. Nat Commun 2024; 15:5129. [PMID: 38879678 PMCID: PMC11180188 DOI: 10.1038/s41467-024-49537-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 06/07/2024] [Indexed: 06/19/2024] Open
Abstract
Glucagon, a hormone released from pancreatic α-cells, is critical for maintaining euglycemia and plays a key role in the pathophysiology of diabetes. To stimulate the development of new classes of therapeutic agents targeting glucagon release, key α-cell signaling pathways that regulate glucagon secretion need to be identified. Here, we focused on the potential importance of α-cell Gs signaling on modulating α-cell function. Studies with α-cell-specific mouse models showed that activation of α-cell Gs signaling causes a marked increase in glucagon secretion. We also found that intra-islet adenosine plays an unexpected autocrine/paracrine role in promoting glucagon release via activation of α-cell Gs-coupled A2A adenosine receptors. Studies with α-cell-specific Gαs knockout mice showed that α-cell Gs also plays an essential role in stimulating the activity of the Gcg gene, thus ensuring proper islet glucagon content. Our data suggest that α-cell enriched Gs-coupled receptors represent potential targets for modulating α-cell function for therapeutic purposes.
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Affiliation(s)
- Liu Liu
- Molecular Signaling Section, LBC, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD, 20892, USA.
| | - Kimberley Ei
- Duke Molecular Physiology Institute, Duke University, Durham, NC, 27701, USA
| | - Diptadip Dattaroy
- Molecular Signaling Section, LBC, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD, 20892, USA
| | - Luiz F Barella
- Molecular Signaling Section, LBC, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD, 20892, USA
| | - Yinghong Cui
- Molecular Signaling Section, LBC, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD, 20892, USA
| | - Sarah M Gray
- Duke Molecular Physiology Institute, Duke University, Durham, NC, 27701, USA
| | - Carla Guedikian
- Duke Molecular Physiology Institute, Duke University, Durham, NC, 27701, USA
| | - Min Chen
- Metabolic Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD, 20892, USA
| | - Lee S Weinstein
- Metabolic Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD, 20892, USA
| | - Emily Knuth
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Erli Jin
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Matthew J Merrins
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Jeffrey Roman
- Institute for Diabetes, Obesity and Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Klaus H Kaestner
- Institute for Diabetes, Obesity and Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Nicolai Doliba
- Institute for Diabetes, Obesity and Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Jonathan E Campbell
- Duke Molecular Physiology Institute, Duke University, Durham, NC, 27701, USA
| | - Jürgen Wess
- Molecular Signaling Section, LBC, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD, 20892, USA.
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Kim JY, van de Wall E, Laplante M, Azzara A, Trujillo ME, Hofmann SM, Schraw T, Durand JL, Li H, Li G, Jelicks LA, Mehler MF, Hui DY, Deshaies Y, Shulman GI, Schwartz GJ, Scherer PE. Obesity-associated improvements in metabolic profile through expansion of adipose tissue. J Clin Invest 2007; 117:2621-37. [PMID: 17717599 PMCID: PMC1950456 DOI: 10.1172/jci31021] [Citation(s) in RCA: 973] [Impact Index Per Article: 57.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2006] [Accepted: 05/31/2007] [Indexed: 02/06/2023] Open
Abstract
Excess caloric intake can lead to insulin resistance. The underlying reasons are complex but likely related to ectopic lipid deposition in nonadipose tissue. We hypothesized that the inability to appropriately expand subcutaneous adipose tissue may be an underlying reason for insulin resistance and beta cell failure. Mice lacking leptin while overexpressing adiponectin showed normalized glucose and insulin levels and dramatically improved glucose as well as positively affected serum triglyceride levels. Therefore, modestly increasing the levels of circulating full-length adiponectin completely rescued the diabetic phenotype in ob/ob mice. They displayed increased expression of PPARgamma target genes and a reduction in macrophage infiltration in adipose tissue and systemic inflammation. As a result, the transgenic mice were morbidly obese, with significantly higher levels of adipose tissue than their ob/ob littermates, leading to an interesting dichotomy of increased fat mass associated with improvement in insulin sensitivity. Based on these data, we propose that adiponectin acts as a peripheral "starvation" signal promoting the storage of triglycerides preferentially in adipose tissue. As a consequence, reduced triglyceride levels in the liver and muscle convey improved systemic insulin sensitivity. These mice therefore represent what we believe is a novel model of morbid obesity associated with an improved metabolic profile.
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Affiliation(s)
- Ja-Young Kim
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Esther van de Wall
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Mathieu Laplante
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Anthony Azzara
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Maria E. Trujillo
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Susanna M. Hofmann
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Todd Schraw
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Jorge L. Durand
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Hua Li
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Guangyu Li
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Linda A. Jelicks
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Mark F. Mehler
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - David Y. Hui
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Yves Deshaies
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Gerald I. Shulman
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Gary J. Schwartz
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Philipp E. Scherer
- Department of Cell Biology and
Department of Medicine, Albert Einstein College of Medicine, New York, New York, USA.
Department of Anatomy and Physiology, Laval University Hospital Centre Research Centre, Laval University School of Medicine, Quebec City, Quebec, Canada.
Department of Pathology, Genome Research Institute, University of Cincinnati, Cincinnati, Ohio, USA.
Department of Physiology and Biophysics and
Department of Neuroscience, Albert Einstein College of Medicine, New York, New York, USA.
Department of Internal Medicine and Department of Cellular and Molecular Physiology, Yale University School of Medicine, and Howard Hughes Medical Institute, New Haven, Connecticut, USA.
Department of Molecular Pharmacology and
Diabetes Research and Training Center, Albert Einstein College of Medicine, New York, New York, USA.
Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
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