LncRNA MAGI2-AS3 inhibits bladder cancer progression by targeting the miR-31-5p/TNS1 axis.

LncRNA MAGI2-AS3 inhibits bladder cancer progression by targeting the miR-31-5p/TNS1 axis.
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LncRNA MAGI2-AS3 通过靶向 miR-31-5p/TNS1 轴抑制膀胱癌进展

DOI:
10.18632/aging.104162
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发表时间:
2020-11-20
期刊:
Aging
影响因子:
--
通讯作者:
Li Y
Li Y
中科院分区:
其他
文献类型:
--
作者:
Tang C;Cai Y;Jiang H;Lv Z;Yang C;Xu H;Li Z;Li Y

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在这项研究中,我们进行了生物信息学分析,以确定调节膀胱癌 (BCa) 进展的竞争性内源 RNA (ceRNA)。 RNA测序数据分析发现,与TGCA数据库中的正常尿路上皮组织(n=19)相比,BCa组织(n=414)中有2451个差异表达的mRNA、174个差异表达的lncRNA和186个microRNA(miRNA)。对差异表达的 lncRNA 和 mRNA 的 CeRNA 网络分析显示,BCa 组织中 lncRNA MAGI2-AS3 和 Tensin 1 (TNS1) mRNA 之间呈强正相关。生物信息学分析还表明,MAGI2-AS3和TNS1 mRNA序列均含有miR-31-5p结合位点。此外,我们观察到与相应对照相比,BCa 组织和细胞系(T24 和 J82)中 MAGI2-AS3 和 TNS1 mRNA 表达显着降低,miR-31-5p 表达显着升高。 BCa 细胞系的功能和生化实验(包括荧光素酶报告基因测定)表明,MAGI2-AS3 通过海绵 miR-31-5p 上调 TNS1。 Transwell实验表明MAGI2-AS3/miR-31-5p/TNS1轴调节BCa细胞系的迁移和侵袭能力。此外,配对BCa和正常尿路上皮组织的免疫组织化学染色显示,TNS1的低表达与BCa中的晚期肿瘤(T)分期和淋巴结转移相关。总之,我们的研究表明 MAGI2-AS3/miR-31-5p/TNS1 轴调节 BCa 进展。
In this study, we performed bioinformatics analysis to identify the competing endogenous RNAs (ceRNAs) that regulate bladder cancer (BCa) progression. RNA-sequencing data analysis identified 2451 differentially expressed mRNAs, 174 differentially expressed lncRNAs, and 186 microRNAs (miRNAs) in BCa tissues (n=414) compared to the normal urothelial tissues (n=19) from the TGCA database. CeRNA network analysis of the differentially expressed lncRNAs and mRNAs showed strong positive correlation between lncRNA MAGI2-AS3 and Tensin 1 (TNS1) mRNA in BCa tissues. Bioinformatics analysis also showed that both MAGI2-AS3 and TNS1 mRNA sequences contain miR-31-5p binding sites. Furthermore, we observed significantly lower MAGI2-AS3 and TNS1 mRNA expression and higher miR-31-5p expression in the BCa tissues and cell lines (T24 and J82) compared with their corresponding controls. Functional and biochemical experiments in BCa cell lines including luciferase reporter assays showed that MAGI2-AS3 upregulated TNS1 by sponging miR-31-5p. Transwell assays showed that the MAGI2-AS3/miR-31-5p/TNS1 axis regulated migration and invasion ability of BCa cell lines. Moreover, immunohistochemical staining of paired BCa and normal urothelial tissues showed that low expression of TNS1 correlated with advanced tumor (T) stages and lymph node metastasis in BCa. In conclusion, our study demonstrates that the MAGI2-AS3/miR-31-5p/TNS1 axis regulates BCa progression.
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