[No authors listed]
The long-chain noncoding RNA (lncRNA) TINCR has been associated with the development and progression of bladder cancer. In this study, we analyzed the correlation between lncRNA TINCR single-nucleotide polymorphisms (SNPs) and bladder cancer susceptibility risk. The genotypes of the lncRNA TINCR rs2288947 and rs8113645 loci in 125 surgically treated bladder cancer patients and 125 controls were analyzed by Sanger sequencing. A dual-luciferase reporter gene assay was used to detect the binding of the microRNAs miR-1247-3p and miR-30c-2-3p with the lncRNA TINCR. The receiver operating characteristic curve was used to analyze the value of expression levels of the lncRNA TINCR and the microRNAs miR-1247-3p and miR-30c-2-3p in the diagnosis of bladder cancer. The bladder cancer susceptibility risk of the rs2288947 G allele carriers was 2.32 times higher compared with the A allele carriers (95% confidence interval [CI]: 1.58-3.42, pâ<â0.01); The bladder cancer susceptibility risk of the rs8113645 T allele carriers was 0.33 times compared with the C allele carriers (95% CI: 0.19-0.55, pâ<â0.01). lncRNA TINCR was more highly expressed in bladder cancer tissues than controls (pâ<â0.01). The lncRNA TINCR rs2288947âA>G variation was associated with increased expression of lncRNA TINCR in bladder cancer tissues, and the rs8113645 Câ>âT was associated with decreased expression. The expression levels of the lncRNA TINCR in cancer and paracancerous tissues showed a significant negative correlation with that of miR-1247-3p and miR-30c-2-3p (râ=â-0.89, -0.78, -0.81, and -0.66, all pâ<â0.01). The dual-luciferase reporter gene assay results indicate that the lncRNA TINCR rs2288947 G allele is the target of miR-1247-3p, and the rs8113645 C allele is the target of miR-30c-2-3p. The lncRNA TINCR rs2288947âA>G is associated with increased bladder cancer risk and rs8113645 Câ>âT is associated with decreased susceptibility. These two SNP loci are associated with lncRNA TINCR expression levels; however, further studies are needed for validation.
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