Abstract
Progressive remodeling of the heart, resulting in cardiomyocyte (CM) loss and increased inflammation, fibrosis, and a progressive decrease in cardiac function, are hallmarks of myocardial infarction (MI)-induced heart failure. We show that MCB-613, a potent small molecule stimulator of steroid receptor coactivators (SRCs) attenuates pathological remodeling post-MI. MCB-613 decreases infarct size, apoptosis, hypertrophy, and fibrosis while maintaining significant cardiac function. MCB-613, when given within hours post MI, induces lasting protection from adverse remodeling concomitant with: 1) inhibition of macrophage inflammatory signaling and interleukin 1 (IL-1) signaling, which attenuates the acute inflammatory response, 2) attenuation of fibroblast differentiation, and 3) promotion of Tsc22d3-expressing macrophages-all of which may limit inflammatory damage. SRC stimulation with MCB-613 (and derivatives) is a potential therapeutic approach for inhibiting cardiac dysfunction after MI.
Original language | English (US) |
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Pages (from-to) | 31353-31364 |
Number of pages | 12 |
Journal | Proceedings of the National Academy of Sciences of the United States of America |
Volume | 117 |
Issue number | 49 |
DOIs | |
State | Published - Dec 8 2020 |
Keywords
- Fibrosis
- MCB-613
- Myocardial infarction
- Cell Differentiation/drug effects
- Cyclohexanones/pharmacology
- Receptors, Steroid/metabolism
- Myocardial Infarction/genetics
- RNA/genetics
- Macrophages/drug effects
- Animals
- Fibroblasts/drug effects
- RAW 264.7 Cells
- Mice
- Transcription, Genetic/drug effects
- Heart Function Tests
- Inflammation/pathology
- Pyridines/pharmacology
- Ventricular Remodeling/drug effects
ASJC Scopus subject areas
- General