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Learn MoreThe adult heart has been considered as an organ with limited regenerating capability due to mature cardiomyocytes exit the cell cycle and stop proliferating. It has been reported that miR-17-92 cluster plays a key role in cardiomyocyte proliferation. According to the seed sequence, miR-17-92 cluster includes miR-18, miR-19, miR-20 and miR-92 families. Here, we show that intra-cardiac injection of miR-19 mimic into adult mouse hearts protects heart from myocardial infarction injury with reduced apoptosis, enhanced cardiomyocyte proliferation and cardiac regeneration. We performed the RNA-seq profiling in both injection of control mimic and miR-19 mimic post myocardial infarction. The transcriptome analysis indicates that genes related to immune response and cardiac remodeling were repressed by miR-19 in infarcted hearts. SOURCE: Jinghai Chen (jinghaichen@zju.edu.cn) - Zhejiang University
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