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- W4316011641 abstract "Endothelial cells (ECs) are constantly exposed to mechanical forces in the form of fluid shear stress, extracellular stiffness, and cyclic strain. How these forces are sensed by ECs remains an understudied aspect in the homeostatic regulation of the circulatory system. Angiomotin-like 2 (AmotL2) is localised to EC junctions and is required for alignment and actin reorganisation under conditions of high shear stress. Here we show that AmotL2 crucially regulates transcription and promotor activity of the YAP gene. Functionally, density-dependent proliferation of ECs in vitro and proliferation of a subpopulation of ECs within the inner aortic arch, were both reliant on AmotL2 and Yap/Taz endothelial expression in vivo . Mechanistically, depletion of AmotL2 led to altered nuclear morphology, chromatin accessibility and suppression of YAP-promotor activity through increased H3K27me3 mediated by the polycromb repressive complex component EZH2. Our data describe a previously unknown role for junctional mechanotransduction in shaping the epigenetic landscape and transcriptional regulation of YAP in vascular homeostasis." @default.
- W4316011641 created "2023-01-14" @default.
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- W4316011641 date "2023-01-13" @default.
- W4316011641 modified "2023-10-18" @default.
- W4316011641 title "The junctional mechanosensor AmotL2 regulates YAP promotor accessibility" @default.
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- W4316011641 doi "https://doi.org/10.1101/2023.01.13.523596" @default.
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