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- W4220682775 endingPage "101612" @default.
- W4220682775 startingPage "101612" @default.
- W4220682775 abstract "Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease in which motor neurons progressively and rapidly degenerate, eventually leading to death. The first protein found to contain ALS-associated mutations was copper/zinc superoxide dismutase 1 (SOD1), which is conformationally stable when it contains its metal ligands and has formed its native intramolecular disulfide. Mutations in SOD1 reduce protein folding stability via disruption of metal binding and/or disulfide formation, resulting in misfolding, aggregation, and ultimately cellular toxicity. A great deal of effort has focused on preventing the misfolding and aggregation of SOD1 as a potential therapy for ALS; however, the results have been mixed. Here, we utilize a small-molecule polytherapy of diacetylbis(N(4)-methylthiosemicarbazonato)copper(II) (CuATSM) and ebselen to mimic the metal delivery and disulfide bond promoting activity of the cellular chaperone of SOD1, the copper chaperone for SOD1. Using microscopy with automated image analysis, we find that polytherapy using CuATSM and ebselen is highly effective and acts in synergy to reduce inclusion formation in a cell model of SOD1 aggregation for multiple ALS-associated mutants. Polytherapy reduces mutant SOD1-associated cell death, as measured by live-cell microscopy. Measuring dismutase activity via zymography and immunoblotting for disulfide formation showed that polytherapy promoted more effective maturation of transfected SOD1 variants beyond either compound alone. Our data suggest that a polytherapy of CuATSM and ebselen may merit more study as an effective method of treating SOD1-associated ALS." @default.
- W4220682775 created "2022-04-03" @default.
- W4220682775 creator A5031157982 @default.
- W4220682775 creator A5044317081 @default.
- W4220682775 creator A5046298709 @default.
- W4220682775 creator A5075694483 @default.
- W4220682775 date "2022-03-01" @default.
- W4220682775 modified "2023-09-27" @default.
- W4220682775 title "A copper chaperone–mimetic polytherapy for SOD1-associated amyotrophic lateral sclerosis" @default.
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- W4220682775 doi "https://doi.org/10.1016/j.jbc.2022.101612" @default.
- W4220682775 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35065969" @default.