实用医学杂志 ›› 2022, Vol. 38 ›› Issue (4): 427-433.doi: 10.3969/j.issn.1006⁃5725.2022.04.007

• 基础研究 • 上一篇    下一篇

LincRNA00858靶向miR⁃3126⁃5p影响肝癌细胞的增殖、迁移和侵袭

雷林翰 郑迪杰 吴纯宸 郑戬 谢华华 华豪 孙诚谊 喻超   

  1. 贵州医科大学临床医学院(贵阳550004);贵州医科大学附属医院肝胆外科,贵州医科大学肝胆胰脾重点实验室,贵州省肝胆胰脾疾病研究所(贵阳550004)

  • 出版日期:2022-02-25 发布日期:2022-02-25
  • 通讯作者: 喻超 E⁃mail:yuchao2002@gmc.edu.cn
  • 基金资助:
    国家自然科学基金(编号:81860506);贵州省科技计划项目(编号:黔科合支撑[2021]一般 080);贵州省卫生计生委科学技
    术基金(编号:gzwkj2021⁃167);贵阳市科技计划项目(编号:筑科合同[2019]9⁃1⁃26)

LincRNA00858 regulates miR ⁃3126⁃5p to affect proliferation,migration and invasion of hepatocellularcarcinoma

LEI Linhan,ZHENG Dijie,WU Chunchen,ZHEN Jian,XIE Huahua,HUA Hao,SUN Chengyi,YU Chao.    

  1. School of Clinical Medicine,Guizhou Medical University,Guiyang 550004,China;Department of Hep⁃atobiliary Surgery,the Affiliated Hospital of Guizhou Medical University,Key Laboratory of Liver,Gallbladder,Pan⁃creas and Spleen,Guizhou Medical University,Guizhou Institute of Hepatobiliary Pancreatic and Splenic Diseases,Guiyang 550004,China

  • Online:2022-02-25 Published:2022-02-25
  • Contact: YU Chao E⁃mail:yuxchao2002@163.com

摘要:

目的 探讨长链非编码 RNA(LncRNA)Linc00858 通过调控靶向小分子 RNA⁃3126⁃5p(miR⁃3126⁃5p)影响肝癌细胞增殖、迁移和侵袭的作用机制。方法 通过实时荧光定量 PCR(qRT⁃PCR)法检测Linc00858 在肝癌组织、癌旁正常组织、人正常肝细胞 LO2 和人肝癌细胞系中的表达情况及两者相对关系。筛选出人肝癌细胞 HUH⁃7 和 MHCC⁃97H 作为研究对象,分别转染 Linc00858 过表达和干扰 Linc00858表达的重组慢病毒,使用 qRT⁃PCR 测定转染效果,通过 CCK⁃8 实验、Transwell 实验检测肿瘤细胞的增殖、迁移及侵袭能力,Western blot 实验检测 Linc00858 对上皮⁃间质转化和细胞周期相关的蛋白表达水平的影响;生物信息学预测和双荧光素酶报告实验确定两者的结合关系。调整 Linc00858 的表达水平后,采用qRT⁃PCR 法检测肝癌细胞中 miR⁃3126⁃5p 表达水平的变化,将 miR⁃3126⁃5p mimics 和 miR⁃3126⁃5p inhibitor分别进行转染,通过上述方法再次检测肝癌细胞增殖、迁移和侵袭能力及相关蛋白表达情况。结果 Linc00858 在肝癌组织和细胞中的表达量高于癌旁正常组织和 LO2;过表达 Linc00858 后 HUH⁃7 细胞增殖、迁移及侵袭能力明显上升,细胞周期蛋白E1(cyclin E1)、周期素依赖性激酶2(CDK2)和波形蛋白(Vimentin)的表达明显上升,P27 和钙粘附蛋白 E(E⁃cadherin)的表达明显下降;沉默 Linc00858 可以抑制 MCHH⁃97H细胞增殖、迁移及侵袭能力,cyclin E1、CDK2 和 Vimentin 的表达明显下降,P27 和 E⁃cadherin 的表达明显上升;Linc00858 靶向调控 miR⁃3126⁃5p 的表达,miR⁃3126⁃5p mimics 能明显逆转过表达 Linc00858 对 HUH⁃7细胞的增殖、迁移及侵袭能力以及相关蛋白表达水平;miR⁃3126⁃5p inhibitor 可以逆转沉默 Linc00858 对MHCC⁃97H 细胞的增殖、迁移及侵袭能力以及相关蛋白表达水平。结论 Linc00858 通过负向调控 miR⁃3126⁃5p来促进肝癌细胞的增殖、侵袭和迁移。

关键词:

肝癌, 长链非编码RNA 00858, 小分子RNA?3126?5p, 细胞侵袭, 细胞迁移

Abstract:

Objective To investigate the effect of long⁃stranded non⁃coding RNA(LNCRNA)Linc00858on the proliferation,migration and invasion of hepatoma cells by regulating targeted small molecule RNA⁃3126⁃5P(MIR⁃3126⁃5P). Methods Real⁃time fluorescent quantitative PCR(qRT⁃PCR)was used to detect the expressionsof Linc00858 in hepatocellular carcinoma(HCC),normal para ⁃ cancerous tissues,normal human hepatocytesLO2 and human hepatoma cell lines. Human hepatoma cell lines HUH ⁃ 7 and MHCC ⁃97H were transfected withLinc00858⁃overexpressed plasmid and Linc00858⁃expressing recombinant lentivirus,respectively. The transfectioneffect was determined by qRT⁃PCR,and proliferation of tumor cells was detected by CCK⁃8 and Transwell assay.Western Blot assay was used to determine the effects of link00858 on epithelial⁃mesenchymal transformation and expression of cell cycle related proteins. Bioinformatics and double luciferase assay were used to determine the association of Linc00858 with miR⁃3126⁃5p. After the level of Linc00858 expression was adjusted,the expressionof miR ⁃3126⁃5p in hepatoma cells was detected by qRT PCR. miR ⁃3126⁃5p mimics and miR ⁃3126⁃5p inhibitorwere transfected respectively;then the proliferation,migration,invasion and expression of related proteins wereanalyzed by the above methods. Results Linc00858 expression was higher in cancerous tissues than in LO2 andnormal tissues. Proliferation,migration and invasion of HUH ⁃ 7 cells were increased after overexpression ofLinc00858. The protein expressions of Vimentin,Cyclin E1 and CDK2 increased obviously,while those of E⁃cad⁃herin and P27 decreased obviously. Proliferation,migration and invasion of MCHH⁃97H cells were inhibited bysilencing Linc00858. The expression levels of Cyclin E1,CDK2 and Vimentin ⁃ related proteins decreased signifi⁃cantly,while those of E ⁃cadherin and P27 increased significantly. Linc00858 regulated miR ⁃3126⁃5p expression,miR ⁃ 3126 ⁃ 5p mimics significantly reversed proliferation,migration and invasion of HUH ⁃ 7 cells induced byLinc00858 overexpression. miR ⁃3126⁃5p inhibitor reversed the impact of Linc00858 silencing on proliferation,migration and invasion ability of MHCC⁃97H cells and related protein expression level. Conclusions Linc00858accelerated proliferation,invasion and migration of hepatoma cells through the negative regulation of microR⁃NA3126⁃5p.

Key words:

hepatocellular carcinoma, long?stranded non?coding RNA 00858, small molecule RNA?3126?5p, cellular invasion, cellular migration