γsecretase inhibitor inhibits bladder cancer cell drug resistance and invasion by reducing epithelialmesenchymal transition
A previous study by our group demonstrated that the expression levels of Notch 1 and Jagged 1 in bladder cancer cells was significantly lower compared with those in normal bladder mucosa, while the expression levels of Notch 1 and Jagged 1 in invasive bladder cancer
were higher compared with those in superficial bladder cancer. The present study investigated the effect of the Notch signaling pathway on the drug resistance and invasiveness of bladder cancer cells. It was demonstrated that complete inhibition of the Notch signaling pathway induced significant
morphological changes and inhibited cell proliferation and migration (P<0.05). Reverse transcription quantitative polymerase chain reaction and western blot analyses revealed that the mRNA and protein expression levels of Ecadherin were upregulated (P<0.05) and the mRNA and protein expression
levels of Ncadherin, vimentin and αsmooth muscle actin were downregulated (P<0.05). The present study concluded that complete inhibition of the Notch signaling pathway inhibited cell proliferation and invasion, and reduced drug resistance in bladder cancer cells, a phenomenon which
may be associated with the inhibition of the epithelialmesenchymal transition.
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Document Type: Research Article
Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
Department of Laboratory Animal Science, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
School of Health Sciences, Macau, China Polytechnic Institute, Macau SAR 999078, P.R. China
Department of Key Laboratory of System BioMedicine of Jiangxi, Medical College of Jiujiang University, Jiujiang, Jiangxi 332000, P.R. China
Publication date: August 1, 2015
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Molecular Medicine Reports is a monthly, peer-reviewed journal available in print and online, that includes studies devoted to molecular medicine, underscoring aspects including pharmacology, pathology, genetics, neurosciences, infectious diseases, molecular cardiology and molecular surgery. In vitro and in vivo studies of experimental model systems pertaining to the mechanisms of a variety of diseases offer researchers the necessary tools and knowledge with which to aid the diagnosis and treatment of human diseases.
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