Abstract:Phospholamban (PLN) is the natural inhibitor of the sarco/endoplasmic reticulum Ca2+ ATPase (SERCA2a). Heterozygous PLN-R14del mutation is associated with an arrhythmogenic dilated cardiomyopathy (DCM), whose pathogenesis has been attributed to SERCA2a “superinhibition.” The aim of the project is to test in human induced pluripotent stem cell–derived cardiomyocytes (hiPSC-CM) harvested from a PLN-R14del carrier whether (1) Ca2+ dynamics and protein localization were compatible with SERCA2a superinhibition and … Show more
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