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An Orthotopic Bladder Cancer Model for Gene Delivery Studies
Published on: December 1, 2013
A plausible anti-apoptotic role of up-regulated OCT4B1 in bladder tumors
Jamshid Asadzadeh1, Malek Hossein Asadi, Nasser Shakhssalim
1Department of Molecular Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran.
Purpose:
To investigate and compare the expression of OCT4B1 between tumor and non-tumor bladder tissues.
Materials And Methods:
We investigated the expression of OCT4B1 in 30 tumor and non-tumor surgical specimens of the bladder, using the TaqMan real-time polymerase chain reaction approach and by carefully designing primers and probes specific for the amplification of the variant.
Results:
Most tumor and non-tumor samples of the bladder showed OCT4B1 expression, but its expression level was significantly higher in the tumors (P < .002). Moreover, the up-regulation of OCT4B1 was more significant in high-grade tumors compared to the low-grade ones (P < .05). We have also employed the RNA interference strategy to evaluate the functional role of OCT4B1 in a bladder cancer cell line, 5637. Suppression of OCT4B1 caused some changes in cell cycle distribution, and significantly elevated the rate of apoptosis in the cells.
Conclusion:
Our findings suggest that OCT4B1 plays a potential role in tumor initiation and/or progression of the bladder cancer. Additionally, OCT4B1 can be regarded as a new tumor marker for detection, classification, and treatment of the bladder cancer. However, more experimental studies are needed to replicate our findings.
Insights
Octamer-binding transcription factor 4, variant 1 (OCT4B1) is upregulated in bladder tumors, particularly high-grade ones. This suggests OCT4B1 may serve as a novel tumor marker for bladder cancer detection and treatment.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Octamer-binding transcription factor 4, variant 1 (OCT4B1) is a protein implicated in cellular processes.
- Understanding OCT4B1 expression in bladder cancer is crucial for identifying potential diagnostic and therapeutic targets.
Purpose of the Study:
- To investigate and compare OCT4B1 expression levels in bladder tumor versus non-tumor tissues.
- To evaluate the functional role of OCT4B1 in bladder cancer progression.
Main Methods:
- Quantitative analysis of OCT4B1 expression using TaqMan real-time polymerase chain reaction (PCR) on 30 surgical specimens.
- RNA interference (RNAi) was used to suppress OCT4B1 in the 5637 bladder cancer cell line.
Main Results:
- OCT4B1 expression was significantly higher in bladder tumors compared to non-tumor tissues (P < .002).
- Upregulation of OCT4B1 was more pronounced in high-grade bladder tumors (P < .05).
- OCT4B1 suppression in cell lines altered cell cycle distribution and increased apoptosis.
Conclusions:
- OCT4B1 may play a role in the initiation and progression of bladder cancer.
- OCT4B1 shows potential as a novel tumor marker for bladder cancer detection, classification, and treatment.
- Further experimental studies are warranted to validate these findings.
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