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[Selection of bax siRNA sequences and its influence on aluminum induced glioma cell apoptosis]
Qinli Zhang1, Yingtao Shi, Qiao Niu
1Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, China.
Objective:
To decrease bax expression by RNA interference, and inhibite the apoptosis in glioma cells induced by aluminum.
Methods:
We had designed three siRNA sequences, and transfected them into glioma cells. The optimal sequence was selected based on the results of cell viability at various transfection concentrations and different transfection times. Fluorescent staining was used to detect the transfection efficiency, interference efficiency was determined by QRT-PCR method, and protein expression was measured with immunohistochemistry.
Results:
The optimal siRNA sequence was selected based on the cell viability. The transfection efficiency was above 90%, the interference efficiency of bax gene was 62.3%, and the optimal transfection time was 72h after transfection, the optimal transfection concentration was 20nmol/L, besides, there was a significant decrease in Bax protein content after transfection.
Conclusion:
The optimal bax siRNA sequence can effectively inhibit the expression of bax gene and Bax protein, which may decrease apoptosis in aluminum-induced toxicity.
Insights
Researchers developed an optimal small interfering RNA (siRNA) sequence to effectively reduce BAX gene and protein expression. This targeted approach shows promise in mitigating apoptosis in glioma cells exposed to aluminum toxicity.
Area of Science:
- Molecular Biology
- Neuroscience
- Toxicology
Context:
- Aluminum exposure is linked to neurotoxicity and apoptosis in glioma cells.
- BAX gene expression plays a critical role in initiating apoptosis.
- RNA interference (RNAi) offers a potential therapeutic strategy for controlling gene expression.
Purpose:
- To design and validate an optimal small interfering RNA (siRNA) sequence targeting the BAX gene.
- To inhibit BAX expression and consequently reduce aluminum-induced apoptosis in glioma cells.
Summary:
- Three siRNA sequences targeting BAX were designed and transfected into glioma cells.
- The optimal sequence was identified through cell viability assays, achieving over 90% transfection efficiency and 62.3% BAX gene interference efficiency at 72 hours and 20 nmol/L.
- Quantitative real-time PCR (QRT-PCR) and immunohistochemistry confirmed a significant reduction in BAX gene and protein levels.
Impact:
- The validated BAX siRNA sequence effectively suppresses BAX gene and protein expression.
- This finding suggests a potential therapeutic avenue for managing aluminum-induced apoptosis in glioma.
- Further research may explore the clinical application of this RNAi strategy in neuro-oncology.
