Transcriptomic analysis and antagonist screening of cisplatin resistance in ovarian cancer
王晓晓 1杜佳慧 1李莉蓉 1郭伟强 2刘松柏1
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作者信息
1. 苏州卫生职业技术学院苏州检验医学生物技术重点实验室,江苏苏州 215009
2. 苏州科技大学,江苏苏州 215009
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摘要
目的 探讨卵巢癌细胞顺铂(DDP)耐药后的转录组差异,并基于此筛选找寻潜在的拮抗剂.方法 以A2780细胞为研究对象,构建DDP耐药细胞A2780-DDP;通过转录组学测序分析,找寻DDP耐药的关键因素,并以实时荧光定量PCR(qPCR)和Western blot实验进行验证;通过小分子抑制剂筛选,采用CCK-8细胞活力检测的方法找寻潜在拮抗剂.结果 成功构建了 A2780-DDP细胞株,发现耐药后细胞增殖无差异,但细胞侵袭和迁移能力增强;通过转录组学测序分析,发现ITGB7、Akt等可能是DDP耐药的关键基因,且qPCR和 Western blot验证发现两者在A2780-DDP细胞株中存在高表达.CCK-8结果显示,雷公藤内酯醇(TPL)、奥拉帕尼等在A2780-DDP细胞株中具有较好的抑制效果.结论 ITGB7/Akt通路在DDP耐药中发挥重要作用,TPL、奥拉帕尼等潜在的DDP耐药拮抗剂可为卵巢癌治疗提供新思路.
Abstract
Objective To investigate the transcriptome differences of ovarian cancer cells after cisplatin(DDP)resistance,and to find potential antagonists based on this screening.Methods DDP-resistant cell line A2780-DDP was constructed with A2780 cells as the research object.Through transcriptome sequencing anal-ysis,the key factors of DDP resistance were found and verified by quantitative real-time PCR(qPCR)and Western blot experiments.Through the screening of small molecule inhibitors,CCK-8 cell viability assay was used to find potential antagonists.Results A2780-DDP were successfully constructed,and it was found that there was no difference in cell proliferation after drug resistance,but the ability of cell invasion and migration was enhanced.Through transcriptome sequencing analysis,it was found that ITGB7 and Akt may be the key genes of A2780-DDP,and qPCR and Western blot showed that they were highly expressed in A2780-DDP.CCK-8 results showed that triptolide(TPL)and Olaparib had good inhibitory effects in DDP-resistant cell lines.Conclusion The ITGB7/Akt pathway plays an important role in DDP resistance,and potential DDP re-sistance antagonists such as TPL can provide new ideas for the treatment of ovarian cancer.
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