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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Theophylline controllable RNAi-based genetic switches regulate expression of lncRNA TINCR and malignant phenotypes in bladder cancer cells.
Scientific Reports 2016 September 3
TINCR is a well-known lncRNA which acts as a master regulator in somatic differentiation development. However, it is still unclear whether TINCR is also involved in caner occurrence and progression. In this study, we observed that TINCR was up-regulated in bladder cancer tissues and cells and contributed to oncogenesis and cancer progression. Silencing TINCR expression inhibited cell proliferation and promoted apoptosis in vitro, indicating that TINCR may be the potential therapeutic target for treating bladder urothelial carcinoma. Thus we used the synthetic biology approach to create theophylline controllable RNAi-based genetic switches which silenced TINCR in a dosage-dependent manner. Both RNAi-OFF and ON switches can be used to quantitatively control the expression of TINCR in bladder cancer to suppress the progression of bladder cancer. These findings suggest that lncRNA-TINCR could promote bladder cancer development and progression and artificial control of its expression through inducible RNAi may represent a new kind of therapeutic strategy for treating human bladder cancer.
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