ArticleScientific reports2022
Cellular analysis of SOD1 protein-aggregation propensity and toxicity: a case of ALS with slow progression harboring homozygous SOD1-D92G mutation.
Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 12 citations in OpenAlex.
- Landscapes of missense variant impact for human superoxide dismutase 1.American journal of human genetics · 2025Article
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16 authors at 6 institutions in 1 country.
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Abstract
Mutations within Superoxide dismutase 1 (SOD1) cause amyotrophic lateral sclerosis (ALS), accounting for approximately 20% of familial cases. The pathological feature is a loss of motor neurons with enhanced formation of intracellular misfolded SOD1. Homozygous SOD1-D90A in familial ALS has been reported to show slow disease progression. Here, we reported a rare case of a slowly progressive ALS patient harboring a novel SOD1 homozygous mutation D92G (homD92G). The neuronal cell line overexpressing SOD1-D92G showed a lower ratio of the insoluble/soluble fraction of SOD1 with fine aggregates of the misfolded SOD1 and lower cellular toxicity than those overexpressing SOD1-G93A, a mutation that generally causes rapid disease progression. Next, we analyzed spinal motor neurons derived from induced pluripotent stem cells (iPSC) of a healthy control subject and ALS patients carrying SOD1-homD92G or heterozygous SOD1-L144FVX mutation. Lower levels of misfolded SOD1 and cell loss were observed in the motor neurons differentiated from patient-derived iPSCs carrying SOD1-homD92G than in those carrying SOD1-L144FVX. Taken together, SOD1-homD92G has a lower propensity to aggregate and induce cellular toxicity than SOD1-G93A or SOD1-L144FVX, and these cellular phenotypes could be associated with the clinical course of slowly progressive ALS.
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