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冬凌草甲素对肺腺癌A549细胞凋亡的影响及相关机制的研究 被引量:4

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摘要 目的探讨冬凌草甲素(Oridonin)对人肺腺癌A549细胞凋亡的影响及其作用机制。方法采用MTT法观察不同浓度冬凌草甲素对A549细胞增殖的抑制作用;瑞氏-吉姆萨染色法检测细胞形态学的改变;Western blot法观察Bcl-2和Bax表达水平的变化。结果冬凌草甲素明显抑制A549细胞的增殖,作用24、48和72 h的IC50分别是87.9、67.6和45.2μmol/L,姬姆萨染色可观察到核染色质浓缩、胞浆空泡、核裂解等典型的凋亡细胞形态学改变,Western blot分析显示有Bcl-2表达的降低和Bax表达的上调。结论冬凌草甲素对人A549细胞具有生长抑制和诱导凋亡作用,同时抗凋亡蛋白Bcl-2表达的降低和促凋亡蛋白Bax上调可能是冬凌草甲素诱导肺腺癌A549细胞发生凋亡的重要作用机制之一。
机构地区 蚌埠医学院
出处 《毒理学杂志》 CAS CSCD 北大核心 2013年第3期204-206,共3页 Journal of Toxicology
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