1
|
Riehle C, Weatherford ET, Wende AR, Jaishy BP, Seei AW, McCarty NS, Rech M, Shi Q, Reddy GR, Kutschke WJ, Oliveira K, Pires KM, Anderson JC, Diakos NA, Weiss RM, White MF, Drakos SG, Xiang YK, Abel ED. Insulin receptor substrates differentially exacerbate insulin-mediated left ventricular remodeling. JCI Insight 2020; 5:134920. [PMID: 32213702 DOI: 10.1172/jci.insight.134920] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 02/26/2020] [Indexed: 01/10/2023] Open
Abstract
Pressure overload (PO) cardiac hypertrophy and heart failure are associated with generalized insulin resistance and hyperinsulinemia, which may exacerbate left ventricular (LV) remodeling. While PO activates insulin receptor tyrosine kinase activity that is transduced by insulin receptor substrate 1 (IRS1), the present study tested the hypothesis that IRS1 and IRS2 have divergent effects on PO-induced LV remodeling. We therefore subjected mice with cardiomyocyte-restricted deficiency of IRS1 (CIRS1KO) or IRS2 (CIRS2KO) to PO induced by transverse aortic constriction (TAC). In WT mice, TAC-induced LV hypertrophy was associated with hyperactivation of IRS1 and Akt1, but not IRS2 and Akt2. CIRS1KO hearts were resistant to cardiac hypertrophy and heart failure in concert with attenuated Akt1 activation. In contrast, CIRS2KO hearts following TAC developed more severe LV dysfunction than WT controls, and this was prevented by haploinsufficiency of Akt1. Failing human hearts exhibited isoform-specific IRS1 and Akt1 activation, while IRS2 and Akt2 activation were unchanged. Kinomic profiling identified IRS1 as a potential regulator of cardioprotective protein kinase G-mediated signaling. In addition, gene expression profiling revealed that IRS1 signaling may promote a proinflammatory response following PO. Together, these data identify IRS1 and Akt1 as critical signaling nodes that mediate LV remodeling in both mice and humans.
Collapse
Affiliation(s)
- Christian Riehle
- Fraternal Order of Eagles Diabetes Research Center and.,Division of Endocrinology and Metabolism, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA.,Division of Endocrinology, Metabolism and Diabetes, and.,Program in Molecular Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA.,Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Eric T Weatherford
- Fraternal Order of Eagles Diabetes Research Center and.,Division of Endocrinology and Metabolism, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Adam R Wende
- Division of Endocrinology, Metabolism and Diabetes, and.,Program in Molecular Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA.,Division of Molecular and Cellular Pathology, Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Bharat P Jaishy
- Fraternal Order of Eagles Diabetes Research Center and.,Division of Endocrinology and Metabolism, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA.,Division of Endocrinology, Metabolism and Diabetes, and.,Program in Molecular Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Alec W Seei
- Fraternal Order of Eagles Diabetes Research Center and.,Division of Endocrinology and Metabolism, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Nicholas S McCarty
- Fraternal Order of Eagles Diabetes Research Center and.,Division of Endocrinology and Metabolism, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Monika Rech
- Division of Endocrinology, Metabolism and Diabetes, and.,Program in Molecular Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Qian Shi
- Fraternal Order of Eagles Diabetes Research Center and.,Division of Endocrinology and Metabolism, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA.,Department of Pharmacology, UCD, Davis, California, USA
| | | | - William J Kutschke
- Division of Cardiovascular Medicine, Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Karen Oliveira
- Division of Endocrinology, Metabolism and Diabetes, and.,Program in Molecular Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Karla Maria Pires
- Division of Endocrinology, Metabolism and Diabetes, and.,Program in Molecular Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Joshua C Anderson
- Department of Radiation Oncology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Nikolaos A Diakos
- Program in Molecular Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Robert M Weiss
- Division of Cardiovascular Medicine, Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Morris F White
- Division of Endocrinology, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Stavros G Drakos
- Nora Eccles Harrison Cardiovascular Research and Training Institute (CVRTI), University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Yang K Xiang
- Department of Pharmacology, UCD, Davis, California, USA.,VA Northern California Health Care System, Mather, California, USA
| | - E Dale Abel
- Fraternal Order of Eagles Diabetes Research Center and.,Division of Endocrinology and Metabolism, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA.,Division of Endocrinology, Metabolism and Diabetes, and.,Program in Molecular Medicine, University of Utah School of Medicine, Salt Lake City, Utah, USA
| |
Collapse
|