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YAP accelerates vascular senescence via blocking autophagic flux and activating mTOR
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YAP accelerates vascular senescence via blocking autophagic flux and activating mTOR
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Journal Article
YAP accelerates vascular senescence via blocking autophagic flux and activating mTOR
2021
Overview
Yes‐associated protein (YAP), a major effector of the Hippo signalling pathway, is widely implicated in vascular pathophysiology processes. Here, we identify a new role of YAP in the regulation of vascular senescence. The inhibition or deficiency and overexpression of YAP were performed in human umbilical vein endothelial cells (HUVECs) and isolated vascular tissues. Cellular and vascular senescence was assessed by analysis of the senescence‐associated β‐galactosidase (SA‐β‐gal) and expression of senescence markers P16, P21, P53, TERT and TRF1. We found that YAP was highly expressed in old vascular tissues, inhibition and knockdown of YAP decreased senescence, while overexpression of YAP increased the senescence in both HUVECs and vascular tissues. In addition, autophagic flux blockage and mTOR pathway activation were observed during YAP‐induced HUVECs and vascular senescence, which could be relieved by the inhibition and knockdown of YAP. Moreover, YAP‐promoted cellular and vascular senescence could be relieved by mTOR inhibition. Collectively, our findings indicate that YAP may serve as a potential therapeutic target for ageing‐associated cardiovascular disease.
Publisher
John Wiley & Sons, Inc,John Wiley and Sons Inc
