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miR-192-5p对胰腺癌细胞系AsPC-1增殖、迁移和侵袭的调控作用

Regulatory Effects of miR-192-5p on Proliferation, Migration and Invasion of Pancreatic Cancer Cell Line AsPC-1

  • 摘要: 本研究旨在揭示miR-192-5p对胰腺癌(pancreatic cancer, PC)细胞增殖、迁移和侵袭的影响,为胰腺癌的临床诊断和治疗提供实验依据。采用实时荧光定量PCR(real time quantitative PCR, RT-qPCR)检测miR-192-5p在人正常胰腺上皮细胞hTERT-HPNE和胰腺癌细胞系AsPC-1中的表达水平;利用Cell Counting Kit-8(CCK-8)、集落形成、划痕以及Transwell实验检测miR-192-5p对AsPC-1细胞增殖、克隆形成、迁移和侵袭能力的影响;生物信息学方法预测miR-192-5p的候选靶基因,并通过双萤光素酶报告实验对miR-192-5p的靶基因进行验证;RT-qPCR检测miR-192-5p对E盒锌指结合同源框2(Zinc finger E-box binding homeobox 2,ZEB2)mRNA表达的影响。结果显示,miR-192-5p在胰腺癌细胞系AsPC-1中的表达水平明显低于正常胰腺上皮细胞hTERT-HPNE中的;胰腺癌细胞系AsPC-1中转染miR-192-5p mimics后其miR-192-5p的表达水平显著升高,并能抑制ZEB2 mRNA的表达,抑制胰腺癌细胞系AsPC-1的增殖、集落形成、迁移和侵袭;胰腺癌细胞系AsPC-1中转染miR-192-5p inhibitor后其miR-192-5p的表达显著降低,促进ZEB2 mRNA的表达,促进胰腺癌细胞系AsPC-1的增殖、集落形成、迁移和侵袭;双萤光素酶报告实验表明ZEB2是miR-192-5p的功能靶基因。本研究结果提示miR-192-5p可能通过靶向ZEB2而抑制胰腺癌细胞系AsPC-1的增殖、迁移和侵袭。

     

    Abstract: The study aims to investigate the effects of miR-192-5 p on proliferation, migration and invasion of pancreatic cancer cell, and to provide an experimental basis for clinical diagnosis and therapy of pancreatic cancer. Real-time quantitative PCR(RT-qPCR) was used to detect the expression level of miR-192-5 p in human normal pancreatic epithelial cell hTERT-HPNE and pancreatic cancer cell AsPC-1. The effects of miR-192-5 p on the proliferation, clone formation, migration and invasion of AsPC-1 cells were analyzed by CCK-8(Cell Counting Kit-8), colony formation, wound healing and Transwell assays, respectively. Bioinformatics methods were used to predict the candidate target gene of miR-192-5 p. Double luciferase reporter vector assay was employed to verify the targeting relationship between miR-192-5 p and its target gene. RT-qPCR was used to detect the effect of miR-192-5 p on the expression of ZEB2 mRNA. The results showed that the expression of miR-192-5 p in pancreatic cancer cell AsPC-1 was significantly lower than that in human normal pancreatic epithelial cell hTERT-HPNE. The expression of miR-192-5 p was increased significantly in AsPC-1 cells trans fected with miR-192-5 p mimics, and miR-192-5 p mimics significantly inhibited the expression of ZEB2 mRNA, the proliferation, clone formation, migration and invasion of AsPC-1, compared with mimics NC. The expression of miR-192-5 p was decreased significantly in AsPC-1 cells transfected with miR-192-5 p inhibitor, and miR-192-5 p inhibitor significantly promoted the expression of ZEB2 mRNA, the proliferation, clone formation, migration and invasion of AsPC-1, compared with inhibitor NC. Double luciferase reporter vector assay showed that ZEB2 was the functional target gene of miR-192-5 p. Our findings suggested that miR-192-5 p might inhibit proliferation, clone formation, migration and invasion of pancreatic cancer cell line AsPC-1 by targeting ZEB2.

     

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