Key result
Depletion of Kindlin-2 in mice induced cardiac myocyte hypertrophy and significantly impaired cardiac systolic function.
Why the study?
Does depletion of Kindlin-2 induce cardiac dysfunction and hypertrophy in mice?
Does depletion of Kindlin-2 induce cardiac dysfunction and hypertrophy in mice?
p-value: p=<0.05
Depletion of Kindlin-2 in mice disrupts Z-disc integrity, leading to cardiac myocyte hypertrophy and systolic dysfunction, highlighting its essential role in maintaining cardiac structure and function.
Hypothesis-generating for Kindlin-2 in human cardiomyopathy; requires validation before any clinical consideration.
Kindlin-2, a member of the Kindlin family focal adhesion proteins, plays an important role in cardiac development. It is known that defects in the Z-disc proteins lead to hypertrophic cardiomyopathy (HCM) or dilated cardiomyopathy (DCM). Our previous investigation showed that Kindlin-2 is mainly localized at the Z-disc and depletion of Kindlin-2 disrupts the structure of the Z-Disc. Here, we reported that depletion of Kindlin-2 leads to the disordered myocardial fibers, fractured and vacuolar degeneration in myocardial fibers. Interestingly, depletion of Kindlin-2 in mice induced cardiac myocyte hypertrophy and increased the heart weight. Furthermore, decreased expression of Kindlin-2 led to cardiac dysfunction and also markedly impairs systolic function. Our data indicated that Kindlin-2 not only maintains the cardiac structure but also is required for cardiac function.
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Qi et al. (2016) studied Cardiac dysfunction (n=18). Kindlin-2 siRNA vs. Control siRNA was evaluated on Cardiac systolic function (ejection fraction and fractional shortening) (p=<0.05). Depletion of Kindlin-2 in mice induced cardiac myocyte hypertrophy and significantly impaired cardiac systolic function.
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