NKX2-1-AS1介导miR-96-5p/PRDM16轴对未分化甲状腺癌细胞增殖、迁移和侵袭的影响  

Effects of NKX2-1-AS1-mediated miR-96-5p/PRDM16 axis on anaplastic thyroid cancer cell proliferation,migration,and invasion

作　　者：郭宏鹏 李尤 刘奇 张睿 孙成林[2] 潘星合 GUO Hongpeng;LI You;LIU Qi;ZHANG Rui;SUN Chenglin;PAN Xinghe(Department of General Surgery,The Center Hosipital of Shenyang Sujiatun,Shenyang 110101,China;Department of General Surgery,Central Hospital Affiliated to Shenyang Medical College,Shenyang 110024,China;Department of Radiology,Central Hospital Affiliated to Shenyang Medical College,Shenyang 110024,China)

机构地区：[1]沈阳市苏家屯区中心医院普外科,沈阳110101 [2]沈阳医学院附属中心医院普外一科,沈阳110024 [3]沈阳医学院附属中心医院放射科,沈阳110024

出　　处：《中国医科大学学报》2024年第6期547-554,共8页Journal of China Medical University

基　　金：辽宁省科学技术计划重大科研项目(2022JH2/101300035);沈阳市科学技术计划(21-173-9-18);沈阳医学院硕士研究生科技创新基金(Y20220531)。

摘　　要：目的探讨长链非编码RNA(lncRNA)NK2同源异形盒1-反义RNA 1(NKX2-1-AS1)介导微RNA(miR)-96-5p/含有PR结构域的蛋白16(PRDM16)轴对未分化甲状腺癌(ATC)细胞体外增殖、迁移和侵袭以及体内移植瘤生长的影响。方法基于生物信息学筛选ATC组织及细胞中差异表达的lncRNA NKX2-1-AS1,并进一步筛选其靶基因miR-96-5p和下游靶基因PRDM16。双荧光素酶报告基因实验验证NKX2-1-AS1与miR-96-5p以及miR-96-5p与PRDM16之间的关系。Western blotting检测过表达miR-96-5p对NKX2-1-AS1过表达的CAL-62细胞PRDM16表达的影响。平板克隆形成实验、划痕实验和Transwell实验分别检测敲减PRDM16对过表达NKX2-1-AS1的CAL-62细胞增殖、迁移和侵袭的影响。裸鼠皮下注射CAL-62细胞,观察敲减PRDM16对NKX2-1-AS1过表达的CAL-62细胞移植瘤生长的影响。结果基于生物信息学筛选出参与调节ATC发展的NKX2-1-AS1/miR-96-5p/PRDM16轴。双荧光素酶报告基因实验验证结果显示NKX2-1-AS1与miR-96-5p、miR-96-5p与PRDM16结合。过表达NKX2-1-AS1上调CAL-62细胞中PRDM16蛋白表达;而过表达miR-96-5p可逆转此上调作用。过表达NKX2-1-AS1抑制CAL-62细胞体外增殖、迁移和侵袭以及体内移植瘤生长;而敲减PRDM16可逆转此抑制作用。结论NKX2-1-AS1可能作为竞争性内源性RNA与miR-96-5p竞争结合下游靶基因PRDM16,上调PRDM16表达,从而抑制ATC细胞体外增殖、迁移和侵袭以及体内移植瘤生长。Objective To explore the effects of the long non-coding RNA(lncRNA)NK2 homeobox 1-antisense RNA 1(NK2-1-AS1),which mediates the microRNA(miR)-96-5p/PR domain-containing protein 16(PRDM16)axis,on anaplastic thyroid cancer(ATC)cell proliferation,migration,and invasion in vitro and transplanted tumor growth in vivo.Methods The differentially expressed lncRNA NKX2-1-AS1 in ATC tissues and cells,its target miRNA miR-96-5p,and its downstream target gene PRDM16 were screened using a bioinformatics analysis.The dual-luciferase reporter assay validated the relationship between NKX2-1-AS1 and miR-96-5p as well as the connection between miR-96-5p and PRDM16.Western blotting was performed to detect the effect of miR-96-5p overexpression on PRDM16 in CAL-62 cells overexpressed with NKX2-1-AS1.Plate clone formation,scratch,and Transwell assays were used to detect the effects of PRDM16 knockdown on the proliferation,migration,and invasion of CAL-62 cells overexpressing NKX2-1-AS1.CAL-62 cells were injected subcutaneously into nude mice and the effect was observed of PRDM16 knockdown on the growth of transplanted tumors of CAL-62 cells overexpressing NKX2-1-AS1.Results The bioinformatics analysis revealed that the NK2-1-AS1/miR-96-5p/PRDM16 axis was involved in regulating ATC development.The dual-luciferase reporter assay demonstrated that NKX2-1-AS1 bound to miR-96-5p and miR-96-5p bound to PRDM16.NKX2-1-AS1 overexpression upregulated PRDM16 protein expression in CAL-62 cells,while miR-96-5p overexpression reversed this phenomenon.NKX2-1-AS1 overexpression inhibited CAL-62 cellular proliferation,migration,and invasion in vitro and transplanted tumor growth in vivo,while knocking down PRDM16 reversed these phenomena.Conclusion NK2-1-AS1 may compete with miR-96-5p as an endogenous RNA to bind to its downstream target gene,PRDM16,and upregulate its expression,thus inhibiting ATC cell proliferation,migration,and invasion in vitro and transplanted tumor growth in vivo.

关 键 词：NKX2-1-AS1 miR-96-5p PRDM16 未分化甲状腺癌 

分 类 号：R736.1[医药卫生—肿瘤]