Journal
TRENDS IN NEUROSCIENCES
Volume 43, Issue 5, Pages 274-284Publisher
CELL PRESS
DOI: 10.1016/j.tins.2020.03.002
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Funding
- NHMRC Career Development Fellowship [1084144]
- Motor Neuron Disease Research Institute of Australia
- Dementia Teams Grant [1095215]
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Amyotrophic lateral sclerosis (ALS) is the most common motor neuron disease but currently has no effective treatment. Growing evidence suggests that proteome homeostasis underlies ALS pathogenesis. Protein production, trafficking, and degradation all shape the proteome. We present a hypothesis that proposes all genetic lesions associated with ALS (including in mRNA-binding proteins) cause widespread imbalance to an already metastable proteome. The impact of such dysfunction is felt across the entire proteome and is not restricted to a small subset of proteins. Proteome imbalance may cause functional defects, such as excitability alterations, and eventually cell death. While this idea is a unifying principle for all of ALS, we propose that stratification will appear that might dictate the efficacy of therapeutics based on the proteostasis network.
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