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This study aims to uncover the in vitro influences of lncRNA TMPO-AS1 on the progression of bladder cancer (BLCA) and the underlying mechanism. Expression levels of TMPO-AS1 in BLCA tissues and normal bladder tissues were analyzed in The Cancer Genome Atlas (TCGA) database. Differential expressions of TMPO-AS1 in BLCA tissues and normal bladder epithelial tissues were detected by quantitative Real Time-Polymerase Chain Reaction (qRT-PCR). Potential influence of TMPO-AS1 on prognosis of BLCA patients was assessed. In vitro influences of TMPO-AS1 on proliferative and migratory abilities in T24 and UMUC-3 cells were evaluated by Cell Counting Kit-8 (CCK-8), transwell, and wound healing assay, respectively. Finally, the correlation between TMPO-AS1 and its sense RNA TMPO was assessed by analyzing TCGA database, clinical samples, and BLCA cell lines. By analyzing TCGA database and clinical samples, it was found that TMPO-AS1 was upregulated in BLCA tissues compared with that in normal bladder tissues. Worse survival was observed in BLCA patients with high expression of TMPO-AS1. TMPO-AS1 level was correlated to muscle invasiveness and TNM stage of BLCA patients. In T24 and UMUC-3 cells, the knockdown of TMPO-AS1 suppressed proliferative and migratory abilities. TMPO-AS1 level was positively correlated to that of its sense RNA TMPO. Moreover, the knockdown of TMPO-AS1 downregulated mRNA and protein levels of TMPO in BLCA cells. TMPO-AS1 is upregulated in BLCA tissue and closely linked to poor prognosis of BLCA patients.


Y-C He, Y-G Bi, L Jiang. LncRNA TMPO-AS1 promotes proliferation and migration in bladder cancer. European review for medical and pharmacological sciences. 2020 Sep;24(17):8740-8746

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PMID: 32964962

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