CircRNA EZH2通过调控miR-30c-5p促进前列腺癌细胞增殖和迁移

CircRNA EZH2 Promotes Proliferation and Migration of Prostate Cancer Cells by Regulating miR-30c-5p

目的探究circRNA EZH2通过调控miR-30c-5p对前列腺癌细胞的增殖和迁移的影响及其相关作用机制。方法通过TCGA数据库分析circRNA EZH2在前列腺癌组织中的表达差异及生存曲线;转染siRNA敲降前列腺癌LNCaP细胞中的circRNA EZH2表达后,CCK-8实验和划痕实验观察LNCaP细胞增殖和迁移,RT-qPCR和Western blot法测定miR-30c-5p、JAK1和PI3K蛋白的表达。结果在前列腺癌组织中circRNA EZH2的表达显著上调(P<0.0001),且高表达circRNA EZH2的患者生存率降低;沉默circRNA EZH2的LNCaP细胞较正常LNCaP细胞的增殖和迁移能力下降(P<0.0001),miR-30c-5p表达增高(P<0.0001),JAK1表达降低(P<0.0001),PI3K信号受抑制。结论EZH2在前列腺癌中高表达,通过调控miR-30c-5p激活PI3K信号通路促进前列腺癌LNCaP细胞的增殖和迁移。

Objective To investigate the effect and related mechanism of circRNA EZH2 on proliferation and migration of prostate cancer cells through miR-30c-5p.Methods The expression difference and survival probability of EZH2 in prostate cancer were analyzed according to TCGA database.SiRNA were transfected to silence EZH2 in prostate cancer LNCaP cells,and proliferation and migration of LNCaP cells were detected by CCK-8 assay and wound healing assay,and the expression of miR-30c-5p,JAK1 and PI3K proteins were determined by RT-qPCR and western blot.Results The expression of EZH2 was up-regulated in prostate cancer tissues,and the survival rate of patients with high expression of EZH2 decreased.Compare with normal LNCaP cells,the proliferation and migration of EZH2-silenced LNCaP cells were decreased,miR-30c-5p expression was increased,JAK1 expression was decreased,and PI3K signal was inhibited.Conclusion EZH2 is highly expressed in prostate cancer and can promote the proliferation and migration of LNCaP cells by regulating miR-30c-5p/JAK1 axis and acting on PI3K signaling pathway.