Kir2.3 knock-down decreases IK1 current in neonatal rat cardiomyocytes.
FEBS Lett.2008 Jun 25;582(15):2338-42. Epub 2008 May 27
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摘要
Inward rectifier potassium Kir2.x channels mediate cardiac inward rectifier potassium currents (I(K1)). As a subunit of Kir2.x, the physiological role of Kir2.3 in native cardiomyocytes has not been reported. This study shows that Kir2.3 knock-down remarkably down-regulates Kir2.3 expression (Kir2.3 protein was reduced to 19.91+/-3.24% on the 2nd or 3rd day) and I(K1) current densities (at -120 mV, control vs. knock-down: -5.03+/-0.24 pA/pF, n=5 vs. -1.16+/-0.19 pA/pF, n=7, P<0.001) in neonatal rat cardiomyocytes. The data suggest that Kir2.3 plays a potentially important role in I(K1) currents in neonatal rat cardiomyocytes.
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基因功能
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原始数据
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文献解读
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