title: Mitochondrial defects in transgenic mice expressing Cu,Zn superoxide dismutase mutations: the role of copper chaperone for SOD1.
abstract: Several hypotheses have been proposed for the mechanisms underlying mutant Cu,Zn Superoxide Dismutase-related Amyotrophic Lateral Sclerosis. These include aggregation pathology, mitochondrial dysfunctions, oxidative stress, and glutamate-mediated excitotoxicity. Mitochondrial disease may be a primary event in neurodegeneration, contributing to oxidative stress and apoptosis, or it may be caused by other cellular processes. Mitochondrial structural abnormalities have been detected in the skeletal muscle, lymphoblast and central nervous system of Amyotrophic Lateral Sclerosis patients. The cause or even the extent of mitochondrial defects in spinal cord and brain of patients with Cu,Zn Superoxide Dismutase mutations is difficult to determine because of rapid mitochondrial deterioration in autopsy samples. The focus of this review is how abnormalities in Cu,Zn Superoxide Dismutase redox states, folding and metallation contribute to mitochondrial deficiencies, investigating the differences in mitochondrial defects observed among transgenic mice expressing various Cu,Zn Superoxide Dismutase mutations.
authors.affiliation: Department of Neurology and Neurotherapeutics, UT Southwestern Medical Center in Dallas, Dallas, TX, USA. Electronic address: marjatta.son@gmail.com.
authors.forename: Marjatta
authors.initials: M
authors.lastname: Son
authors.affiliation: Department of Neurology and Neurotherapeutics, UT Southwestern Medical Center in Dallas, Dallas, TX, USA.
authors.forename: Jeffrey L
authors.initials: JL
authors.lastname: Elliott
mesh_terms: D000818:Animals; D006801:Humans; D051379:Mice; D008822:Mice, Transgenic; D028361:Mitochondrial Diseases / Q000201:enzymology / Q000235:genetics*; D024101:Mitochondrial Proteins / Q000235:genetics*; D018832:Molecular Chaperones / Q000235:genetics* / Q000502:physiology; D009154:Mutation / Q000235:genetics*; D017510:Protein Folding; D013482:Superoxide Dismutase / Q000235:genetics*
chemical_list: C491962:Ccs protein, mouse; D024101:Mitochondrial Proteins; D018832:Molecular Chaperones; D013482:Superoxide Dismutase
keywords: Copper Chaperone for SOD1; Cu,Zn Superoxide Dismutase; Mitochondria; Mutation; Neurodegeneration; Transgenic mouse