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- Sha Ye, Cuiling Yang, Chunya Wang, Aiping Jin, Qianrong Zhang, and Suilong Zhang.
- Department of Geriatric Cardiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.
- Panminerva Med. 2023 Jun 1; 65 (2): 199204199-204.
BackgroundThe aim of this study was to elucidate the influence and molecular mechanism of microRNA-29c-3p (miR-29c-3p) on cell functions of cardiac fibroblasts.MethodsRat primary cardiac fibroblasts were induced with high-level glucose (HG), followed by determination of miR-29c-3p and signal transducer and activator of transcription 3 (STAT3) levels. The regulatory effects of miR-29c-3p and STAT3 (AG490) on proliferative and migratory potentials in HG-induced cardiac fibroblasts were examined by cell counting kit-8 (CCK-8) and Transwell assay, respectively. The interaction between miR-29c-3p and STAT3 was assessed by bioinformatics analysis and dual-luciferase reporter assay.ResultsMiR-29c-3p was downregulated, and STAT3 was upregulated in HG-induced cardiac fibroblasts. HG induction stimulated proliferative and migratory potentials in cardiac fibroblasts, which were attenuated by overexpression of miR-29c-3p. STAT3 was the target gene binding miR-29c-3p. Application of AG490, the STAT3 inhibitor, was able to reverse the promoted proliferative and migratory potentials in HG-induced cardiac fibroblasts with miR-29c-3p knockdown.ConclusionsMiR-29c-3p weakens the over-proliferative and over-migratory potentials in HG-induced cardiac fibroblasts via inactivating the STAT3 signaling.
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