التفاصيل البيبلوغرافية
| العنوان: |
TMEM16A inhibits angiotensin II-induced basilar artery smooth muscle cell migration in a WNK1-dependent manner. |
| المؤلفون: |
Zheng, Huaqing, Li, Xiaolong, Zeng, Xin, Huang, Chengcui, Ma, Mingming, Lv, Xiaofei, Zhang, Yajuan, Sun, Lu, Wang, Guanlei, Du, Yanhua, Guan, Yongyuan |
| المصدر: |
Acta Pharmaceutica Sinica B; Dec2021, Vol. 11 Issue 12, p3994-4007, 14p |
| مصطلحات موضوعية: |
ANGIOTENSIN II, BASILAR artery, CELL migration, MYOSIN light chain kinase, SMOOTH muscle, MUSCLE cells, CELL migration inhibition |
| مستخلص: |
Vascular smooth muscle cell (VSMC) migration plays a critical role in the pathogenesis of many cardiovascular diseases. We recently showed that TMEM16A is involved in hypertension-induced cerebrovascular remodeling. However, it is unclear whether this effect is related to the regulation of VSMC migration. Here, we investigated whether and how TMEM16A contributes to migration in basilar artery smooth muscle cells (BASMCs). We observed that AngII increased the migration of cultured BASMCs, which was markedly inhibited by overexpression of TMEM16A. TMEM16A overexpression inhibited AngII-induced RhoA/ROCK2 activation, and myosin light chain phosphatase (MLCP) and myosin light chain (MLC20) phosphorylation. But AngII-induced myosin light chain kinase (MLCK) activation was not affected by TMEM16A. Furthermore, a suppressed activation of integrin β 3/FAK pathway, determined by reduced integrin β 3 expression, FAK phosphorylation and F-actin rearrangement, was observed in TMEM16A-overexpressing BASMCs upon AngII stimulation. Contrary to the results of TMEM16A overexpression, silencing of TMEM16A showed the opposite effects. These in vitro results were further demonstrated in vivo in basilar arteries from VSMC-specific TMEM16A transgenic mice during AngII-induced hypertension. Moreover, we observed that the inhibitory effect of TMEM16A on BASMC migration was mediated by decreasing the activation of WNK1, a Cl−-sensitive serine/threonine kinase. In conclusion, this study demonstrated that TMEM16A suppressed AngII-induced BASMC migration, thus contributing to the protection against cerebrovascular remodeling during AngII-infused hypertension. TMEM16A may exert this effect by suppressing the RhoA/ROCK2/MLCP/MLC20 and integrin β 3/FAK signaling pathways via inhibiting WNK1. Our results suggest that TMEM16A may serve as a novel therapeutic target for VSMC migration-related diseases, such as vascular remodeling. This study suggests that modulation of TMEM16A expression and/or activity might be a novel strategy to prevent hypertension-induced vascular remodeling. [Display omitted] [ABSTRACT FROM AUTHOR] |
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