
This study investigates the role of ESCRT proteins, particularly Vps4a, in cardiac ischemia/reperfusion injury. Ischemia/reperfusion induced membrane blebbing and phosphatidylserine exposure in cardiomyocytes. Vps4a is translocated to injured sites to reseal membranes, with overexpression protecting against injury and deficiency and increasing susceptibility. Ripk3 deletion alleviated the effects of Vps4a deficiency, and the Ca2+-Alix-Ist1 axis facilitated Vps4a recruitment. These findings highlight Vps4a-mediated membrane repair as a potential therapeutic target for cardiac ischemia/reperfusion injury.
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