Oncogene miR-187-5p is associated with cellular proliferation, migration, invasion, apoptosis and an increased risk of recurrence in bladder cancer - 11/07/18
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Graphical abstract |
Highlights |
• | MiR-187-5p is upregulated in BC tissues and cell lines. |
• | MiR-187-5p promotes BC cell migration, mobility and inhibits apoptosis. |
• | Low miR-187-5p expression patients experience lower risks of recurrence. |
Abstract |
Background |
Bladder cancer, the ninth-most-common malignancy worldwide with an estimated 356,000 new cases and 145,000 deaths annually, has a propensity to relapse, requiring lifelong monitoring after diagnosis. 75% patients diagnosed with BC are non-muscle invasive BC and over 50% of them experience recurrences within 6–12 years of initial diagnosis. miRNA are small, noncoding RNA and shown to be oncogenes or anti-oncogenes in bladder cancer, contributing to numerous BC cell processes, including cell proliferation, differentiation, migration and apoptosis.
Methods |
RT-qPCR were performed to detect the expression of miR-187-5p in tissues and cell lines, After which, clinicopathological variables and the prognostic value of altered miR-187-5p expression in BC was analyzed with the 48 formalin-fixed paraffin-embedded BC samples. Moreover, Cell functional assays (wound healing assay, CCK-8 assay, transwell assay and flow cytometry assay) were performed to explore the relationship between miR-187-5p expression and cell proliferation, migration, invasion and apoptosis in BC.
Results |
Up-regulation of miR-187-5p was observed in BC tissues and BC cell lines. Cox proportional hazard regression analysis demonstrated that the patients with low expression of miR-187-5p experience lower risks of recurrence in the univariate and multivariate analysis. The Kaplan-Meier recurrence-free curves suggested that the patients with low expression of miR-187-5p experience lower risks of recurrence. Up-regulation of miR-187-5p promotes cell proliferation and mobility and inhibits the apoptosis of 5637 and UM-UC-3 cell, while down-regulation of miR-187-5p reverses these effects.
Conclusions |
The results of our study demonstrated that oncogene miR-187-5p is associated with cellular proliferation, migration, invasion, apoptosis and an increased risk of recurrence in bladder cancer.
Le texte complet de cet article est disponible en PDF.Keywords : Key words, microRNAs, miR-187-5p, Bladder cancer, Urothelial carcinoma, Recurrence
Plan
Vol 105
P. 461-469 - septembre 2018 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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