Effect of 17-allylamino-17-demethoxygeldanamycin on cell cycle and apoptosis of JAR cells and the associated mechanisms

doi:10.16098/j.issn.0529-1356.2018.02.010

Abstract

Abstract:

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.

Key words: 17-allylamino-17-demethoxygeldanamycin, Choriocarcinoma cells JAR, Vascular endothelial growth factor, Flow cytometry, Western blotting

GU Miao BA Yi CUI Li-jun LIU Bai-yi AN Guo-qing LI Yu-hong XU Qian. Effect of 17-allylamino-17-demethoxygeldanamycin on cell cycle and apoptosis of JAR cells and the associated mechanisms[J]. Acta Anatomica Sinica, 2018, 49(2): 198-203.

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