摘要
目的探究CircCSNK1G1调节miR-381-3p/S期激酶相关蛋白2(Skp2)轴对胃癌(GC)细胞增殖、凋亡和迁移的影响。方法将HGC-27细胞分为未转染组、si-NC组、si-CircCSNK1G1组、si-CircCSNK1G1+anti-miR-NC组、si-CircCSNK1G1+anti-miR-381-3p组。qRT-PCR分别检测GC肿瘤组织和GC不同细胞系中CircCSNK1G1、miR-381-3p、Skp2 mRNA的表达;MTT法检测细胞增殖;克隆形成实验检测细胞克隆数量;流式细胞术检测细胞凋亡;Transwell小室法测定细胞迁移和侵袭能力;Western Blot检测EMT相关蛋白E-cadherin、Vimentin的表达;双荧光素酶实验验证CircCSNK1G1、miR-381-3p、Skp2三者的靶向关系。结果与癌旁组织和人正常胃黏膜上皮细胞GES-1相比,GC肿瘤组织和GC细胞系中的CircCSNK1G1、Skp2 mRNA高表达,miR-381-3p低表达(P<0.05),且HGC-27细胞中miR-381-3p表达水平最低,CircCSNK1G1、Skp2 mRNA表达最高,因此后续选用HGC-27细胞并敲低CircCSNK1G1进行实验。与未转染组和si-CircCSNK1G1-NC组相比,转染si-CircCSNK1G1能够降低HGC-27细胞中CircCSNK1G1、Skp2 mRNA表达、细胞增殖活性、细胞迁移数以及Vimentin蛋白表达(P<0.05),提高miR-381-3p的表达、细胞凋亡率和E-cadherin蛋白表达(P<0.05)。双荧光素酶实验验证了CircCSNK1G1、Skp2均与miR-381-3p存在靶向关系,而且CircCSNK1G1可作为miR-381-3p的海绵RNA,进一步调节Skp2的表达和活性。结论敲低CircCSNK1G1能够靶向上调miR-381-3p表达,抑制Skp2表达,进而促进GC细胞凋亡,抑制其增殖和迁移。
Objective To explore the effect of CircCSNK1G1 on the proliferation,apoptosis and migration of gastric cancer(GC)cells by regulating the miR-381-3p/S kinase-related protein 2(Skp2)axis.Methods HGC-27 cells were divided into non transfected group,si-NC group,si-CircCSNK1G1 group,si-CircCSNK1G1+anti-miR-NC group,and si-CircCSNK1G1+anti-miR-381-3p group.The expressions of CircCSNK1G1,miR-381-3p and Skp2 mRNA in GC tumor tissues and GC cell lines were detected by qRT-PCR respectively;cell proliferation was detected by MTT assay;the number of cell clones was detected by clonogenic assay;apoptosis was detected by flow cytometry;cell migration and invasion ability were determined by transwell;the expression of E-cadherin and Vimentin was detected by Western Blot;and the targeting relationship among CircCSNK1G1,miR-381-3p and Skp2 was verified by double luciferase experiment.Results Compared with GES-1 in normal tissues adjacent to cancer and normal human gastric mucosal epithelial cells,the expression of CircCSNK1G1 and Skp2 mRNA in GC tumor tissues and GC cell lines is high,and the expression of miR-381-3p is low(P<0.05),and the expression level of miR-381-3p in HGC-27 cells is the lowest,and the expression level of CircCSNK1G1 and Skp2 mRNA is the highest,therefore,HGC-27 cells were selected and CircCSNK1G1 was knocked down for the experiment.Compared with untransfected group and si-CircCSNK1G1-NC group,transfection of si-CircCSNK1G1 could reduce the expression of CircCSNK1G1,Skp2 mRNA,cell proliferation activity,cell migration number,and the expression of Vimentin protein in HGC-27 cells(P<0.05),the expression of miR-381-3p,apoptosis rate,and the expression of E-cadherin protein were increased(P<0.05).The double luciferase experiment verified that CircCSNK1G1 and Skp2 had a targeting relationship with miR-381-3p,moreover,CircCSNK1G1 could be used as sponge RNA of miR-381-3p to further regulate the expression and activity of Skp2.Conclusion Knockdown of CircCSNK1G1 can target up-regulate the expression of miR-381-3p,and inhibit the expression of Skp2,thus promoting the apoptosis of GC cells,and inhibiting their proliferation and migration.
作者
郭学海
张永健
高秀凤
赵宏阳
王斌
GUO Xue-hai;ZHANG Yong-jian;GAO Xiu-feng;ZHAO Hong-yang;WANG Bin(Department of General Surgery,Linxi Hospital,Kailuan General Hospital,Tangshan 063103,China)
出处
《现代消化及介入诊疗》
2024年第5期572-577,共6页
Modern Interventional Diagnosis and Treatment in Gastroenterology
基金
河北省卫生健康委员会科研项目(20191348)。
