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U0126-induced regulation of the expression of Bc1-2/Bax in neurons after hypoxic injury in vitro
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF NEUROMEDICINE
- Issue:
- 9
- DOI:
- 10.3760/cma.j.issn.1671-8925.2006.09.005
- Key Word:
- 缺氧损伤;凋亡;丝裂原活化蛋白激酶
Abstract： 目的 研究体外培养的神经细胞缺血缺氧性损伤后凋亡相关蛋白Bcl-2和Bax的表达,及应用MAPKs信号通路阻断剂U0126对其表达的调节作用.方法 取出生1 d的SD大鼠,断头处死后迅速解剖分离其皮层组织进行培养,3 d后进行缺血缺氧处理致细胞损伤.并分为加药组和缺氧组,前者给予U0126,后者给予空白的DMSO溶剂作为对照.采用MTT法、免疫细胞化学、免疫蛋白印迹(western blot)技术,检测在缺氧性损伤急性期神经细胞的活力、凋亡相关蛋白Bcl-2和Bax的表达情况,及给予U0126后对神经细胞的活力、凋亡相关蛋白Bcl-2和Bax表达的影响.结果 缺氧损伤后Bcl-2和Bax表达升高,细胞活力不佳,死亡较多.给予U0126后ERK1/2和ELK1磷酸化水平降低,同时Bax的表达水平降低,Bc1-2表达增高,细胞的状态和活力亦明显改善. 结论给予MAPKs阻断剂U0126可以调节缺氧损伤后凋亡相关蛋白Bc1-2和Bax的表达,抑制细胞死亡,改善细胞状态.
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