Abstract
Voltage dependent L-Type calcium-channels (LTCCs) are located on the cardiomyocyte membrane and regulate cardiac contraction and rhythmicity. In human pathologies, such as heart failure (HF), decreased inward calcium current (I Ca ) is frequently observed. Here, we generated a mimetic peptide (MP) that targets LTCCs and restores impaired intracellular calcium homeostasis through a novel mechanism. Effective delivery of MP, fused with a cell penetrating peptide, was found to correct Ca2+ alterations in a mouse model of HF, in human cardiomyocytes derived from induced pluripotent stem-cells. These data provide a proof-of-concept supporting a therapeutic role for MP to treat human diseases related to LTCC abnormalities. Category: heart failure biology
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