环境毒理
徐进,季林丹,徐立红.醋酸铅对PC-12细胞Bax、Bcl-2和p53蛋白表达的影响[J].环境科学学报,2007,27(2):272-275
醋酸铅对PC-12细胞Bax、Bcl-2和p53蛋白表达的影响
- Influence of lead acetate on the expressions of Bax, Bcl-2 and p53 in PC-12 cells
- 基金项目:国家自然科学基金重点项目(No.20137010)
- 徐进
- 浙江大学医学院生物化学与遗传学系, 杭州 310058
- 季林丹
- 浙江大学医学院生物化学与遗传学系, 杭州 310058
- 徐立红
- 浙江大学医学院生物化学与遗传学系, 杭州 310058
- 摘要:用蛋白免疫印迹法研究醋酸铅对PC-12细胞Bax、Bcl-2和p53蛋白表达的影响.结果显示,当醋酸铅浓度达到0.1μmol·L-1时,Bax和p53的表达水平显著上升,决定凋亡是否发生的重要因素Bax/Bcl-2比率也明显上升,并存在浓度依赖关系.当醋酸铅浓度达到1μmol·L-1时,Bcl-2的表达显著降低.结合相关文献报道,Bax、Bcl-2和p53可能在铅诱导的细胞凋亡中起了重要的调控作用.
- Abstract:The expressions of Bax, Bcl-2, and p53 in PC-12 cells after exposure to lead acetate were detected by Western blot. The results showed that, when treated with 0.1 μmol·L-1lead acetate, the expressions of Bax and p53 increased significantly. Furthermore, the ratio of Bax/Bcl-2, an important determinant of apoptosis, increased in a concentration-dependent manner. When the concentration of lead acetate reached 1 mol·L-1, the expression of Bcl-2 decreased significantly. Together with our previous study, it suggests that Bax, Bcl-2, and p53 may play important roles in lead-induced apoptosis.
摘要点击次数: 1924 全文下载次数: 2634