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Rutin Ameliorates ALS Pathology by Reducing SOD1 Aggregation and Neuroinflammation in an SOD1-G93A Mouse Model
Xiaoyu Du1,2, Quanxiu Dong1,2, Jie Zhu1,2
1National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
International Journal of Molecular Sciences
|October 16, 2024
Summary
Rutin, a natural compound, improved motor function and restored motor neurons in an amyotrophic lateral sclerosis (ALS) mouse model by reducing toxic protein aggregation and inflammation. This suggests rutin as a potential therapeutic for ALS.
Area of Science:
- Neuroscience
- Pharmacology
- Biochemistry
Background:
- Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease impacting motor neurons, with limited therapeutic options.
- Natural products are increasingly investigated for neuroprotective properties and potential in treating complex neurological disorders like ALS.
- Rutin, a flavonoid glycoside, possesses known antioxidant and anti-inflammatory activities, suggesting its potential utility in neurodegenerative conditions.
Purpose of the Study:
- To investigate the therapeutic efficacy of rutin in a mouse model of amyotrophic lateral sclerosis (ALS).
- To determine if rutin can mitigate the pathological hallmarks of ALS, specifically focusing on SOD1 aggregation and glial activation.
- To assess the impact of rutin treatment on motor function and motor neuron survival in the SOD1-G93A ALS mouse model.
Main Methods:
- Utilized the superoxide dismutase 1 (SOD1)-G93A transgenic mouse model, a standard preclinical model for ALS.
- Administered rutin to SOD1-G93A mice and assessed its effects on SOD1 protein aggregation in spinal cord and brainstem tissues.
- Evaluated glial cell activation (astrocytes and microglia) as a marker of neuroinflammation in the central nervous system.
- Quantified motor function using established behavioral tests and examined motor neuron survival histologically.
Main Results:
- Rutin administration significantly reduced the aggregation of mutant SOD1 protein in the spinal cords and brainstems of SOD1-G93A mice.
- Treatment with rutin diminished the activation of glial cells, indicating a reduction in neuroinflammation.
- SOD1-G93A mice treated with rutin exhibited significantly improved motor function compared to untreated controls.
- Histological analysis revealed a notable restoration of motor neurons in the spinal cords of rutin-treated mice.
Conclusions:
- Rutin demonstrates significant neuroprotective effects in a mouse model of ALS.
- The therapeutic benefits of rutin are associated with its ability to reduce SOD1 aggregation and neuroinflammation.
- Rutin's multi-targeted mechanism makes it a promising therapeutic candidate for further development in ALS treatment.
