[Toxic effects of CD-TK double suicidal gene system against prostate carcinoma cells]
Wen-hui Zhu1, Wan-long Tan, He Huang
1Department of Urology Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. niuhui7980@163.com
Objective:
To evaluate the toxic effects of the CD-TK fusion gene systems against prostate carcinoma cell line RM-1 for assessing the value of suicidal gene therapy for prostate carcinoma.
Methods:
CD-TK fusion gene and green fluorescent protein (GFP) gene were transfected into RM-1 cells through adenovirus vectors. RT-PCR was used to demonstrate successful transfection and transcription of the suicidal genes. The toxic effects of 5-FC and GCV used alone or in combination on the transfected cells were observed by MTT assay, with the non-transfected RM-1 cells serving as control.
Results:
Cytotoxic activity of CD/5-FC and TK/GCV systems against RM-1 cells was observed, and combined treatment with the two drugs resulted in significantly lowered survival of CD-TK-expressing cells (P<0.05). After exposure to 5-FC and GCV for 72 h, the survival rate of the transfected cells decreased to 71.56% and 47.27%, respectively, and their combined use resulted in a survival rate as low as 18.46%.
Conclusion:
CD-TK fusion double suicidal gene system can produce significantly stronger toxic effect against RM-1 cells in vitro than either of suicidal genes.
Insights
The CD-TK fusion double suicidal gene system shows enhanced toxicity against prostate cancer cells. This combination therapy significantly reduces cancer cell survival compared to single gene treatments, highlighting its potential in gene therapy.
Area of Science:
- Molecular Biology
- Cancer Genetics
- Gene Therapy
Context:
- Prostate carcinoma is a significant health concern.
- Suicide gene therapy offers a targeted approach to cancer treatment.
- Evaluating novel gene constructs is crucial for therapeutic advancement.
Purpose:
- To assess the efficacy of the CD-TK fusion gene system in targeting prostate carcinoma RM-1 cells.
- To determine the synergistic toxic effects of combined drug treatment (5-FC and GCV) on transfected cells.
- To evaluate the potential of this double suicide gene system for prostate cancer gene therapy.
Summary:
- Adenovirus vectors were used to transfect RM-1 cells with CD-TK fusion and GFP genes.
- Reverse transcription-polymerase chain reaction (RT-PCR) confirmed successful gene transcription.
- MTT assays revealed that the combined CD-TK system with 5-FC and GCV significantly reduced RM-1 cell survival (to 18.46%) compared to single gene treatments.
Impact:
- The CD-TK fusion double suicide gene system demonstrates superior in vitro cytotoxicity against prostate cancer cells.
- This finding supports the potential of combined suicide gene therapy for enhanced prostate cancer treatment.
- Further research may validate this approach for clinical applications in managing prostate carcinoma.
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