Chronic Oxidative Stress and Stress Granule Formation in ALS Neurons
Author Information
Author(s): Gu Ao, Zhang Yiti, He Jianfeng, Zhao Mingri, Ding Lingjie, Liu Wanxi, Xiao Jianing, Huang Jiali, Liu Mujun, Liu Xionghao, Zsindely Nora, Bodai Laszlo
Primary Institution: Central South University, Changsha, China
Hypothesis
Chronic oxidative stress contributes to neuronal degeneration in ALS through stress granule formation and abnormal protein aggregation.
Conclusion
The study found that oxidative stress exacerbates neuronal degeneration in ALS by promoting abnormal protein aggregation and stress granule formation.
Supporting Evidence
- Oxidative stress was shown to increase stress granule formation in ALS neurons.
- Chronic oxidative stress led to axonal swelling and neuronal death in the study's model.
- Treatment with cycloheximide reduced stress granule formation and cell death under oxidative stress.
- Bosutinib treatment improved cell viability in UBQLN2 mutant neurons.
Takeaway
This study shows that stress from aging and other factors can harm brain cells in ALS, and that certain treatments might help protect these cells.
Methodology
The study used induced motor neurons derived from UBQLN2 P497H iPSCs to investigate the effects of oxidative stress on neuronal degeneration.
Limitations
The study only tested a few drugs for rescuing neuronal pathology and did not conduct a high-throughput drug screen.
Digital Object Identifier (DOI)
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