CNP regulates cardiac contractility and increases cGMP near both SERCA and TnI: difference from BNP visualized by targeted cGMP biosensors.
本研究构建了靶向肌钙蛋白I(TnI)和磷酸兰尼蛋白(PLB)/AKAP18δ的荧光共振能量转移(FRET)cGMP生物传感器,用于实时监测成年大鼠心肌细胞中cGMP的亚细胞区室化。C型利钠肽(CNP)刺激GC-B/NPR-B后,TnI和PLB附近cGMP均升高;脑钠肽(BNP)刺激GC-A/NPR-A仅升高PLB附近cGMP,而不升...