HSP70 inhibitor combined with cisplatin suppresses the cervical cancer proliferation in vitro and transplanted tumor growth: An experimental study

Publication date: Available online 29 January 2017
Source:Asian Pacific Journal of Tropical Medicine
Author(s): Jian Liu, Jing Liu, Su-Yang Guo, Hong-Li Liu, Sheng-Ze Li
ObjectiveTo study the regulating effect of HSP70 inhibitor (PES) combined with cisplatin on cervical cancer proliferation in vitro and transplanted tumor growth.MethodsCervical cancer Hela cell lines were cultured and divided into control group, cisplatin group, PES group and cisplatin+PES group that were treated with serum-free DMEM, cisplatin with final concentration of 10 μmol/L, PES 20 μmol/L and cisplatin 10 μmol/L combined with PES with 20 μmol/L, respectively; animal models with cervical cancer xenografts were established and divided into control group, cisplatin group, PES group and cisplatin+PES group who received intra-tumor injection of normal saline, 10 μmol/L cisplatin, 20 μmol/L PES as well as 10 μmol/L cisplatin+20 μmol/L PES, respectively. Cell proliferation activity, transplanted tumor volume and mitochondria apoptosis molecule expression were detected.ResultsCell viability value and Bcl-2 mRNA expression in cells of cisplatin group, PES group and cisplatin+PES group were significantly lower than those of control group while Bax, Caspase-3 and Caspase-9 mRNA expression in cells were significantly higher than those of control group; transplanted tumor volume and the Bcl-2 mRNA expression in transplanted tumor tissue of cisplatin group, PES group and cisplatin+PES group were significantly lower than those of control group while Bax, Caspase-3 and Caspase-9 mRNA expression in transplanted tumor tissue were significantly higher than those of control group.ConclusionsHSP70 inhibitor combined with cislatin can inhibit cervical cancer cell proliferation in vitro and transplanted tumor growth through mitochondrial apoptosis pathway.



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