目的研究G蛋白偶联受体APJ(血管紧张素受体样受体或称血管紧张素受体AT1相关的受体蛋白,putativere-ceptor protein related to the angiotensin receptor AT1)的内源性配体apelin-13通过PKC-ERK1/2-Cyclins信号通路促进大鼠血管平滑肌...目的研究G蛋白偶联受体APJ(血管紧张素受体样受体或称血管紧张素受体AT1相关的受体蛋白,putativere-ceptor protein related to the angiotensin receptor AT1)的内源性配体apelin-13通过PKC-ERK1/2-Cyclins信号通路促进大鼠血管平滑肌细胞(vascular smooth muscle cells,VSMCs)增殖的影响。方法培养SD大鼠胸主动脉VSMCs,Western blot检测p-ERK1/2、ERK1/2、细胞周期蛋白CyclinD1和CyclinE的表达,四噻唑蓝比色法观察PKC阻断剂GF109203X对apelin-13促大鼠VSMCs增殖的影响。结果Apelin-13剂量依赖性和时间依赖性地促进大鼠VSMCsp-ERK1/2表达增加,对ERK1/2表达没有明显影响,GF109203X可明显抑制apelin-13诱导的细胞增殖及p-ERK1/2、CyclinD1和CyclinE的表达。结论Apelin-13促进大鼠VSMCs增殖可能与ape-lin-APJ-PKC-ERK1/2-Cyclins信号通路有关。展开更多
文摘目的研究G蛋白偶联受体APJ(血管紧张素受体样受体或称血管紧张素受体AT1相关的受体蛋白,putativere-ceptor protein related to the angiotensin receptor AT1)的内源性配体apelin-13通过PKC-ERK1/2-Cyclins信号通路促进大鼠血管平滑肌细胞(vascular smooth muscle cells,VSMCs)增殖的影响。方法培养SD大鼠胸主动脉VSMCs,Western blot检测p-ERK1/2、ERK1/2、细胞周期蛋白CyclinD1和CyclinE的表达,四噻唑蓝比色法观察PKC阻断剂GF109203X对apelin-13促大鼠VSMCs增殖的影响。结果Apelin-13剂量依赖性和时间依赖性地促进大鼠VSMCsp-ERK1/2表达增加,对ERK1/2表达没有明显影响,GF109203X可明显抑制apelin-13诱导的细胞增殖及p-ERK1/2、CyclinD1和CyclinE的表达。结论Apelin-13促进大鼠VSMCs增殖可能与ape-lin-APJ-PKC-ERK1/2-Cyclins信号通路有关。
基金supported by grants from The National Natural Scientific Foundation of China(30901577)The Hengyang Technological Bureau of China(2009KJ14)+1 种基金Ministry of Education of Returned Overseas Students to Start Research and Fund Projects(20091590)Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province~~
基金supported by grants from The National Natural Science Foundation of China(30901577,30770868)National Basic Research Program of China(2006CB503808)+3 种基金Talent Program of USC(2008XQD01)Hengyang Municipal Bureau of Science and Technology(2009KJ14)Ministry of Education of Returned Overseas Students to Start Research and Fund Projects(20091590)Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province~~