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- W2150021777 abstract "A novel transcriptional system was developed that can robustly enhance cancer-specific gene expression. In the system, hTERT promoter-driven gene expression was enhanced by an advanced two-step transcriptional amplification (TSTA). This construct was used to develop a novel system for detection of bladder cancer cells. The current study evaluated the advanced TSTA system by examining the cancer-specific gene transcription in various bladder cancer cell lines. The system significantly enhanced cancer-specific luciferase gene expression in the bladder cancer cell lines in comparison to the previous expression system of one-step or conventional TSTA. The fold gain of the enhancement was significantly correlated to the telomerase activity of the cell lines. A green fluorescent protein (GFP) gene encoding plasmid vector was constructed where hTERT promoter-driving transcription is enhanced by the advanced TSTA to utilize the system for the imaging and detection of viable bladder cancer cells. The advanced TSTA-hTERT-GFP plasmid successfully induced cancer-specific gene expression, showing robust GFP expression in human bladder cancer cell lines, but no visible GFP expression in normal bladder urothelial cells. The control GFP plasmid with a CMV promoter yielded GFP expression in both normal bladder cells and cancer cells. The advanced TSTA-hTERT-GFP plasmid allowed selective visualization of viable human bladder cancer cells in mixed cell culture containing 10- and 100-fold more normal bladder urothelial cells. These findings indicate that the advanced TSTA-hTERT expressional system is a valuable tool for detecting viable bladder cancer cells. The current system can be applied for in vitro detection of bladder cancer cells in urine and other types of cancer cells disseminated in vivo." @default.
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- W2150021777 date "2012-03-28" @default.
- W2150021777 modified "2023-09-27" @default.
- W2150021777 title "A novel gene expression system for detecting viable bladder cancer cells" @default.
- W2150021777 doi "https://doi.org/10.3892/ijo.2012.1417" @default.
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