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- W3015790751 abstract "The volume-regulated anion channel (VRAC) plays a central role in maintaining cell volume in response to osmotic stress. Leucine-rich repeat-containing 8A (LRRC8A) was recently identified as an essential component of VRAC although other Cl− channels were also suggested to contribute to VRAC. VRAC is activated when a cell is challenged with a hypotonic environment or even in isotonic conditions challenged with different stimuli. It is not clear how VRAC is activated and whether activation of VRAC in hypotonic and isotonic conditions share the same mechanism. In this present study, we investigated relative contribution of LRRC8A and anoctamin 1(ANO1) to VRAC currents activated by fetal bovine serum (FBS) in isotonic condition, and studied the role of intracellular Ca2+ in this activation. We used CRISPR/Cas9 gene editing approach, electrophysiology, and pharmacology approaches to show that VRAC currents induced by FBS is mostly mediated by LRRC8A in HEK293 cells, but also with significant contribution from ANO1. FBS induces Ca2+ transients and these Ca2+ signals are required for the activation of VRAC by serum. These findings will help to further understand the mechanism in activation of VRAC." @default.
- W3015790751 created "2020-04-17" @default.
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- W3015790751 date "2020-07-01" @default.
- W3015790751 modified "2023-10-15" @default.
- W3015790751 title "LRRCA8A and ANO1 contribute to serum-induced VRAC in a Ca2+-dependent manners" @default.
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- W3015790751 doi "https://doi.org/10.1016/j.jphs.2020.04.003" @default.
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