Therapeutic potential of BAK gene silencing in aluminum induced neural cell degeneration
Related Experiment Video
Updated: Jun 20, 2026
Modeling Neuronal Death and Degeneration in Mouse Primary Cerebellar Granule Neurons
Published on: November 6, 2017
Abstract:
Previous studies have demonstrated robust BAK gene silencing via RNA interference (RNAi). To investigate whether BAK RNAi may serve as a co-therapeutic agent in neural cell death, we herein established a cell degeneration model using a human neuroblastoma cell line (SH-SY5Y) treated by aluminum (Al). Combining cell viability assays and expression analyses by QRT (quantitative real-time)-PCR and immunocytochemistry, we selected and validated the optimal small interfering RNA (siRNA) from three candidate siRNAs for the BAK gene. Our data identified siRNA1 as the most effective siRNA; the optimal concentration of the transfection agent was 10nM and the optimal incubation period was 24h. The transfection and knockdown efficiency was 93% and 58%, respectively, which closely correlated with the BAK protein expression. SH-SY5Y cells with BAK knockdown showed a clear resistance against cell death and Al-induced apoptosis. These results indicate that genetic inactivation of BAK could be an effective strategy in delaying the onset of apoptosis in Al-treated cells, and exemplify the therapeutic potential of RNAi-based methods for the treatment of neural cell degeneration.
Insights
Silencing the BAK gene using RNA interference (RNAi) protected human neuroblastoma cells from aluminum-induced death. This demonstrates RNAi
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- Previous studies confirmed BAK gene silencing via RNA interference (RNAi).
- Neural cell death is a significant concern in neurodegenerative diseases.
- Aluminum (Al) exposure can induce neurotoxicity and apoptosis.
Purpose of the Study:
- To investigate BAK RNAi as a co-therapeutic agent against neural cell death.
- To establish and validate a cell degeneration model using aluminum-treated SH-SY5Y cells.
- To optimize siRNA delivery for effective BAK gene knockdown.
Main Methods:
- Established a human neuroblastoma (SH-SY5Y) cell degeneration model using aluminum.
- Utilized quantitative real-time PCR (QRT-PCR) and immunocytochemistry for expression analysis.
- Screened and validated three small interfering RNAs (siRNAs) targeting the BAK gene.
- Determined optimal transfection agent concentration (10nM) and incubation period (24h).
Main Results:
- Identified siRNA1 as the most effective siRNA for BAK gene silencing.
- Achieved 93% transfection and 58% knockdown efficiency, correlating with BAK protein levels.
- Demonstrated that BAK knockdown confers resistance to cell death and aluminum-induced apoptosis in SH-SY5Y cells.
Conclusions:
- Genetic inactivation of the BAK gene via RNAi is a promising strategy to delay apoptosis in aluminum-treated cells.
- RNAi-based therapeutic methods hold potential for treating neural cell degeneration.
- Optimized siRNA delivery enhances knockdown efficiency and therapeutic efficacy.
