
17-烯丙胺基-17-去甲氧基格尔德霉素对人绒毛膜癌JAR细胞系细胞周期和凋亡的影响及其相关机制
谷苗 巴一 崔丽军 刘百艺 安国庆 李玉红 许倩
解剖学报 ›› 2018, Vol. 49 ›› Issue (2) : 198-203.
17-烯丙胺基-17-去甲氧基格尔德霉素对人绒毛膜癌JAR细胞系细胞周期和凋亡的影响及其相关机制
Effect of 17-allylamino-17-demethoxygeldanamycin on cell cycle and apoptosis of JAR cells and the associated mechanisms
目的 探讨热休克蛋白 90(HSP90)抑制剂17-烯丙胺基-17-去甲氧基格尔德霉素(17-AAG)对人绒毛膜癌JAR细胞系细胞周期和凋亡的影响及其相关机制。方法 体外培养人绒毛膜癌JAR细胞系,经不同浓度的17-AAG作用24 h后,采用TUNEL细胞凋亡法及Annexin V-FITC/PI双标记流式细胞术检测细胞凋亡;流式细胞术检测细胞周期;Real-time PCR法和Western blotting法检测血管内皮生长因子(VEGF)、cyclinD1、cyclinA1和 Caspase-3在mRNA和蛋白水平的表达情况。 结果 17-AAG对JAR细胞生长具有明显的抑制作用,并存在浓度依赖性。各组细胞发生G2期阻滞及明显凋亡;5、10、20 mg/L 17-AAG 作用24 h 后,各组细胞增殖相关基因cyclinD1 mRNA及蛋白表达水平相对于0 mg/L 17-AAG处理组(对照组)均下调,VEGF蛋白表达水平相对于0 mg/L 17-AAG处理组(对照组)下调,且下调程度与处理浓度成正比,而凋亡相关基因Caspase-3的mRNA未出现明显上调,但其在蛋白表达水平上调。 结论 17-AAG能够抑制JAR细胞增殖活力,诱导细胞凋亡,17-AAG 可能通过下调VEGF 的表达,产生抗肿瘤血管新生作用;可能通过下调cyclinD1使细胞周期发生G2期阻滞;且可能通过上调Caspase-3诱导细胞凋亡。
Objective To explore the effects of 17-AAG on cell cycle and apoptosis of Choriocarcinoma cells JAR and to clarify the related mechanisms. Methods Choriocarcinoma cells JAR were cultured in vitro and incubated with 17-allylamino-17-demethoxygeldanamycin (17-AAG) at different concentrations for 24 hours. The apoptosis of JAR cells with different concentrations of 17-AAG was measured by TUNEL analysis and flow cytometry (Annexin V-FITC/PI). Cell cycle was analyzed by flow cytometry. Real-time PCR and Western blotting analysis were used for the detection of vascular endothelial growth factor(VEGF), cyclinD1,cyclinA1 and Caspase-3 mRNA levels and protein levels. Results 17-AAG had obvious inhibitory effect on JAR cell growth with concentration dependent. When the 17-AAG concentration increased, G2 phase retardation and obvious apoptosis were found in every groups. Real-time PCR revealed an decreased expression level of cyclinD1. Western blotting analysis revealed an decreased expression level of VEGF, cyclinD1 and an increased expression level of Caspase-3. Conclusion 17-AAG can inhibit the JAR cell proliferation activity, induce cell apoptosis, and may exert the effect by down-regulation of VEGF, cyclinD1 and up-regulation of Caspase-3.
17-烯丙胺基-17-去甲氧基格尔德霉素 / 人绒毛膜癌JAR细胞 / 血管内皮生长因子 / 流式细胞术 / 免疫印迹法
17-allylamino-17-demethoxygeldanamycin / Choriocarcinoma cells JAR / Vascular endothelial growth factor / Flow cytometry / Western blotting
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