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01 May 2019 : Laboratory Research  

Higher Expression of Linc00152 Promotes Bladder Cancer Proliferation and Metastasis by Activating the Wnt/β-Catenin Signaling Pathway

Tang Xian-li1A, Luo Hong1BC, Zhou Hong1CD, Li Yuan1EF, Dai Jun-yong1CDF, Xian Peng1CDF, Song Yan-ping1ABE, Yuan Fang1CDE, Liu Nan1EFG*

DOI: 10.12659/MSM.913944

Med Sci Monit 2019; 25:3221-3230

Abstract

BACKGROUND: Recent studies have demonstrated that Linc00152 is highly expressed in multiple cancer types and its genes show tumor-promoting characteristics. However, the efficacy and biological mechanism of Linc00152 in bladder cancer remains unclear.

MATERIAL AND METHODS: We study investigated the relative expression and promoter methylation of Linc00152 in 126 cases of bladder cancer tissues by qRT-PCR and Bisulfite sequencing PCR. qRT-PCR was used to assess the relative expression of Linc00152 in 4 human bladder cancer cell lines. To explore the biological properties of Linc00152, we performed cell growth and soft-agar colony-formation assays, flow cytometry analyses, wound-healing assay, and Transwell assay. Western blot analysis was used to detect the underlying mechanisms of Linc00152 in bladder cancer.

RESULTS: We found that Linc00152 was highly expressed in 126 cases of bladder carcinoma tissues (p<0.001) and 4 cell lines (p<0.01), and Linc00152 is more commonly expressed in patients with advanced-stage cancer (p=0.021). Knockdown of Linc00152 by using siRNAs in bladder cancer cell lines (T24 and HT-1197) suppressed cell viability and growth by causing cell cycle arrest and apoptosis (p<0.001), as well as inhibiting cell migration and invasion (p<0.001). In addition, the quantitative RT-PCR and Western blot results suggest that knockdown of Linc00152 reduced Wnt/β-Catenin signaling (p<0.001).

CONCLUSIONS: This research shows that Linc00152 is highly expressed in patients with bladder cancer and the possible carcinogenic effect of Linc00152 in bladder cancer occurs through activating the Wnt/β-Catenin signaling pathway, and could be a new biomarker for diagnosis and prevention of this cancer.

Keywords: Cell Growth Processes, Gallbladder Neoplasms, Genes, Tumor Suppressor, RNA, Long Noncoding, Wnt Signaling Pathway, Adult, Aged, Apoptosis, Cell Cycle, Cell Cycle Checkpoints, Cell Movement, Cell Proliferation, Gene Knockdown Techniques, Middle Aged, Neoplasm Metastasis, Urinary Bladder Neoplasms

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750