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首页> 外文期刊>Journal of cellular physiology. >WNT5B promotes vascular smooth muscle cell dedifferentiation via mitochondrial dynamics regulation in chronic thromboembolic pulmonary hypertension
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WNT5B promotes vascular smooth muscle cell dedifferentiation via mitochondrial dynamics regulation in chronic thromboembolic pulmonary hypertension

机译:WNT5B促进血管平滑肌细胞去分化通过线粒体动力学慢性血栓栓塞肺的监管高血压

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摘要

Chronic thromboembolic pulmonary hypertension (CTEPH) is characterized by proliferative vascular remodeling. Abnormal vascular smooth muscle cell (VSMC) phenotype switching is crucial to this process, highlighting the need for VSMC metabolic changes to cover cellular energy demand in CTEPH. We report that elevated Wnt family member 5B (WNT5B) expression is associated with vascular remodeling and promotes VSMC phenotype switching via mitochondrial dynamics regulation in CTEPH. Using primary culture of pulmonary artery smooth muscle cells, we show that high WNT5B expression activates VSMC proliferation and migration and results in mitochondrial fission via noncanonical Wnt signaling in CTEPH. Abnormal VSMC proliferation and migration were abolished by mitochondrial division inhibitor 1, an inhibitor of mitochondrial fission. Secreted frizzled-related protein 2, a soluble scavenger of Wnt signaling, attenuates VSMC proliferation and migration by accelerating mitochondrial fusion. These findings indicate that WNT5B is an essential regulator of mitochondrial dynamics, contributing to VSMC phenotype switching in CTEPH.
机译:慢性血栓栓塞肺动脉高压(CTEPH)特点是增殖血管重建。肌细胞(VSMC)表型转换是至关重要的这个过程,突出VSMC的必要性代谢变化覆盖细胞能量需求在CTEPH。成员5 b (WNT5B)表达有关血管重建,促进VSMC表型通过线粒体动态调节开关在CTEPH。动脉平滑肌细胞,我们表明,高WNT5B激活VSMC增殖和表达式迁移和导致线粒体分裂通过经典之中CTEPH Wnt信号。VSMC增殖和迁移被废除通过线粒体分裂抑制剂1,线粒体分裂抑制剂。frizzled-related蛋白质可溶性清道夫Wnt信号变弱,VSMC增殖通过加速线粒体和迁移融合。线粒体动力学的重要调节器,促进VSMC表型转换CTEPH。

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