Key result
Expression of the HCM-associated cMyBP-C C10mut protein in cultured rat cardiomyocytes led to improper sarcomere localization and significantly reduced fractional shortening and relaxation velocities.
Population
Cultured adult rat cardiomyocytes
Comparison
Adenoviral expression of cMyBP-C C10mut vs Wild-type cMyBP-C expression and controls
Design
Preclinical
Follow-up
48 hours
Authors
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Offers mechanistic clues for MYBPC3 HCM; leaves open clinical translation pending human validation.
The study provides mechanistic evidence that the South Asian-specific MYBPC3 25-base pair deletion causes hypertrophic cardiomyopathy through improper protein localization and contractile dysfunction.
Kuster et al. (2015) studied Hypertrophic cardiomyopathy. Adenoviral expression of cMyBP-C C10mut vs. Wild-type cMyBP-C expression and controls was evaluated on Protein localization, contractile function, and Ca2+ transients. Expression of the HCM-associated cMyBP-C C10mut protein in cultured rat cardiomyocytes led to improper sarcomere localization and significantly reduced fractional shortening and relaxation velocities.
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