Key result
Myotilin gene deletion in mice does not alter heart function or muscle capacity under stress.
Why the study?
Missense mutations in the myotilin gene cause muscular dystrophies, but the role of myotilin in muscle structure and function is unclear.
Does targeted deletion of the myotilin gene perturb muscle structure or function in mice?
Population
Mice lacking the myotilin gene (myo(-/-) mice)
Comparison
Targeted deletion of the myotilin gene vs wild-type mice
Design
Preclinical study
Authors
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Questions myotilin's indispensability for muscle and cardiac integrity; leaves open compensatory mechanisms and human disease relevance.
Does targeted deletion of the myotilin gene perturb muscle structure or function in mice?
Targeted deletion of myotilin in mice does not affect muscle development, structure, or function, suggesting it is either not essential for basal function or other proteins compensate for its absence.
Moza et al. (2006) studied Myotilin deficiency. Targeted deletion of the myotilin gene vs. Wild-type mice was evaluated on Muscle sarcomeric and sarcolemmal integrity, and muscle capacity. Targeted deletion of the myotilin gene in mice did not perturb muscle sarcomeric integrity, heart function, or muscle capacity even after prolonged physical stress compared to wild-type mice.
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