榄香烯乳对人宫颈癌Hela细胞转录因子ELK1及其靶基因的影响

Effect of Elemene on Transcription Factor ELK1 and Its Target Gene of Human Cervix Cancer Hela Cell

目的观察中药榄香烯乳对人宫颈癌Hela细胞转录因子ELK1及其靶基因的影响,以深入了解榄香烯乳的抗癌机制。方法用MTT法检测药物对细胞的抑制作用,双荧光素酶报告系统检测药物对转录因子ELK1的影响,Western Blot检测磷酸化ELK1及其靶基因c-fos表达。结果榄香烯乳能明显抑制人宫颈癌Hela细胞的生长,其半数生长抑制剂量为80.6μg/mL;榄香烯乳处理组荧光素酶活性下降,磷酸化的ELK1及其靶基因c-fos的表达均下调。结论榄香烯乳可能通过下调转录因子ELK1的磷酸化水平,抑制c-fos的表达,从而抑制人宫颈癌Hela细胞的生长。

Objective To study the effect of elemene on transcription factor ELK1 and its target gene in human cervix cancer Hela cell. Mthods The cell proliferation was assessed by MTT assay. The luciferase activity of transcription factor ELK1 was determined by the Dual-Luciferase Reporter Assay System. The protein expression of phosphorated ELK1 and its target gene c-fos were determined by Western Blot. Results Elemene can remarkably inhibited the growth of Hela cell and its IC50 was 80.6 μg/mL. The luciferase activity of transcription factor ELK1 in Hela cells treated with elemene was inhibited. The protein expression of phosphorated ELK1 and its target gene c-fos in Hela cells treated with elemene were down-regulated. Conclusion Elemene can inhibit human cervix cancer Hela cell proliferation, which may be related with suppression of c-fos gene through inhibiting expression of phosphorated ELK1.