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Heartbeat regulates cardiogenesis by suppressing retinoic acid signaling via expression of miR-143

机译:心跳通过抑制miR-143的表达来控制视黄酸信号,从而调节心脏的发生

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Cardiogenesis proceeds with concomitant changes in hemodynamics to accommodate the circulatory demands of developing organs and tissues. In adults, circulatory adaptation is critical for the homeostatic regulation of blood circulation. In these hemodynamics-dependent processes of morphogenesis and adaptation, a mechanotransduction pathway, which converts mechanical stimuli into biological outputs, plays an essential role, although its molecular nature is largely unknown. Here, we report that expression of zebrafish miR-143 is dependent on heartbeat. Knocking-down miR-143 results in de-repression of retinoic acid signaling, and produces abnormalities in the outflow tracts and ventricles. Our data uncover a novel epigenetic link between heartbeat and cardiac development, with miR-143 as an essential component of the mechanotransduction cascade
机译:心脏发生过程伴随着血流动力学的变化,以适应发育中的器官和组织的循环需求。在成年人中,循环适应对于血液循环的稳态调节至关重要。在这些依赖于血流动力学的形态发生和适应过程中,尽管机械上的分子性质尚不清楚,但将机械刺激转换为生物输出的机械转导途径起着至关重要的作用。在这里,我们报告斑马鱼miR-143的表达取决于心跳。敲低miR-143会导致视黄酸信号转导抑制,并在流出道和心室产生异常。我们的数据揭示了心跳与心脏发育之间的新型表观遗传关系,其中miR-143是机械转导级联的重要组成部分

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