ArticleFrontiers in pharmacology2026
BRG1 exacerbates myocardial fibrosis after myocardial infarction by interacting with ZEB1.
Article in Frontiers in pharmacology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Myocardial fibrosis, characterized by excessive collagen deposition and fibroblast activation, is a pivotal pathological process driving heart failure after myocardial infarction (MI). Our prior research revealed that Brahma-related gene 1 (BRG1) expression is elevated after MI and exacerbated cardiac electrophysiological remodeling; however, its precise role and molecular mechanism in post-MI fibrosis remain undefined. Methods: BRG1 expression was assessed in a mouse MI model and in TGF-β1-stimulated cardiac fibroblasts (CFs). Gain- and loss-of-function studies were performed using adenoviral vectors, siRNA, and plasmids Results: BRG1 was upregulated in fibrotic mouse hearts post-MI and in activated CFs. Conclusion: Our study defines a novel BRG1/ZEB1/PP2A transcriptional axis as a key driver of myocardial fibrosis and suggests BRG1 as a potential therapeutic target for mitigating fibrotic remodeling after MI.
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