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Long noncoding RNA LINC01287 promotes proliferation and inhibits apoptosis of lung adenocarcinoma cells via the miR-3529-5p/RNASEH2A axis under the competitive endogenous RNA pattern
Environmental Toxicology ( IF 4.5 ) Pub Date : 2021-07-13 , DOI: 10.1002/tox.23325
Jing Zhang 1 , Dan Ma 1 , Honggang Kang 1 , Jun Zhao 1 , Mengxiang Yang 1
Affiliation  

Lung adenocarcinoma (LUAD) is regarded as the most common type of lung cancer. The molecular targeted therapies for LUAD have being extensively studied. Ribonuclease H2 subunit A (RNASEH2A) is a nucleotide degrading enzyme gene that exerts great influence on cell proliferation, DNA replication and genomic stability. According to bioinformatics analysis, RNASEH2A expression in LUAD tissues is predicted to be upregulated and high expression of RNASEH2A might be related to lower survival rate in LUAD patients. In the present study, we investigated functions of RNASEH2A in LUAD. The mRNA RNASEH2A showed high expression in LUAD cells, and its knockdown inhibited proliferation and induced apoptosis in LUAD cells. RNASEH2A was found to be a target gene of microRNA miR-3529-5p after their expression levels and interaction being examined. Long noncoding RNA LINC01287 upregulated RNASEH2A expression in LUAD cells by combining with miR-3529-5p in a competitive way. Rescue assays revealed that the overexpression of RNASEH2A reversed the suppression of cell proliferation and the promotion of cell apoptosis induced by miR-3529-5p overexpression or LINC01287 knockdown. Finally, forkhead box A1 (FOXA1) interacted with RNASEH2A promoter and LINC01287 promoter to upregulate the expression levels of RNASEH2A and LINC01287 in LUAD cells. Overall, FOXA1-induced LINC01287 serves as a competing endogenous RNA to promote proliferation and inhibit apoptosis of LUAD cells via upregulation of RNASEH2A expression at the posttranscriptional level by competitively combining with miR-3529-5p.

中文翻译:

长链非编码RNA LINC01287在竞争性内源RNA模式下通过miR-3529-5p/RNASEH2A轴促进肺腺癌细胞增殖和抑制凋亡

肺腺癌(LUAD)被认为是最常见的肺癌类型。LUAD 的分子靶向疗法已被广泛研究。核糖核酸酶H2亚基A(RNASEH2A)是一种核苷酸降解酶基因,对细胞增殖、DNA复制和基因组稳定性有很大影响。根据生物信息学分析,预测 LUAD 组织中 RNASEH2A 的表达上调,RNASEH2A 的高表达可能与 LUAD 患者较低的存活率有关。在本研究中,我们研究了 LUAD 中 RNASEH2A 的功能。mRNA RNASEH2A 在 LUAD 细胞中高表达,其敲低可抑制 LUAD 细胞的增殖并诱导细胞凋亡。在检测了它们的表达水平和相互作用后,发现 RNASEH2A 是 microRNA miR-3529-5p 的靶基因。长链非编码 RNA LINC01287 通过与 miR-3529-5p 竞争性结合上调 LUAD 细胞中 RNASEH2A 的表达。救援分析显示,RNASEH2A 的过表达逆转了由 miR-3529-5p 过表达或 LINC01287 敲低诱导的细胞增殖抑制和细胞凋亡促进。最后,叉头盒 A1 (FOXA1) 与 RNASEH2A 启动子和 LINC01287 启动子相互作用,上调 LUAD 细胞中 RNASEH2A 和 LINC01287 的表达水平。总体而言,FOXA1 诱导的 LINC01287 作为一种竞争性内源性 RNA,通过与 miR-3529-5p 竞争性结合,通过在转录后水平上调 RNASEH2A 表达来促进 LUAD 细胞的增殖和抑制细胞凋亡。救援分析显示,RNASEH2A 的过表达逆转了由 miR-3529-5p 过表达或 LINC01287 敲低诱导的细胞增殖抑制和细胞凋亡促进。最后,叉头盒 A1 (FOXA1) 与 RNASEH2A 启动子和 LINC01287 启动子相互作用,上调 LUAD 细胞中 RNASEH2A 和 LINC01287 的表达水平。总体而言,FOXA1 诱导的 LINC01287 作为一种竞争性内源性 RNA,通过与 miR-3529-5p 竞争性结合,通过在转录后水平上调 RNASEH2A 表达来促进 LUAD 细胞的增殖和抑制细胞凋亡。救援分析显示,RNASEH2A 的过表达逆转了由 miR-3529-5p 过表达或 LINC01287 敲低诱导的细胞增殖抑制和细胞凋亡促进。最后,叉头盒 A1 (FOXA1) 与 RNASEH2A 启动子和 LINC01287 启动子相互作用,上调 LUAD 细胞中 RNASEH2A 和 LINC01287 的表达水平。总体而言,FOXA1 诱导的 LINC01287 作为一种竞争性内源性 RNA,通过与 miR-3529-5p 竞争性结合,通过在转录后水平上调 RNASEH2A 表达来促进 LUAD 细胞的增殖和抑制细胞凋亡。Forkhead box A1 (FOXA1) 与 RNASEH2A 启动子和 LINC01287 启动子相互作用,上调 LUAD 细胞中 RNASEH2A 和 LINC01287 的表达水平。总体而言,FOXA1 诱导的 LINC01287 作为竞争性内源性 RNA,通过与 miR-3529-5p 竞争性结合,通过在转录后水平上调 RNASEH2A 表达来促进 LUAD 细胞的增殖和抑制细胞凋亡。Forkhead box A1 (FOXA1) 与 RNASEH2A 启动子和 LINC01287 启动子相互作用,上调 LUAD 细胞中 RNASEH2A 和 LINC01287 的表达水平。总体而言,FOXA1 诱导的 LINC01287 作为竞争性内源性 RNA,通过与 miR-3529-5p 竞争性结合,通过在转录后水平上调 RNASEH2A 表达来促进 LUAD 细胞的增殖和抑制细胞凋亡。
更新日期:2021-09-02
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