Overexpression of metallothionein-I, a copper-regulating protein, attenuates intracellular copper dyshomeostasis and extends lifespan in a mouse model of amyotrophic lateral sclerosis caused by mutant superoxide dismutase-1.
Heat shock factor 1 over-expression protects against exposure of hydrophobic residues on mutant SOD1 and early mortality in a mouse model of amyotrophic lateral sclerosis.
The G37R, one of the many SOD1 mutations known to be associated to FALS, is difficult to be reconciled with this model because it is located far from the metal sites and the monomer-monomer interface.
Circular dichroism measurements revealed that the FALS mutant SODs are sensitive to denaturation by dithiothreitol, SDS, or heat treatment, but these results do not completely explain the different recognition by the mAbs between wild-type and FALS mutant SODs under the denatured conditions.
Screening for candidate modifier genes that might be responsible for the early onset and severe course of the disease in the 25-year-old patient revealed an additional homozygous mutation of the CNTF gene not found in his yet unaffected sister. hSOD-1G93A mice were crossbred with CNTF(-/-) mice and were investigated with respect to disease onset and duration, to test the hypothesis that CNTF acts as a candidate modifier gene in FALS with mutations in the SOD-1 gene.
Familial amyotrophic lateral sclerosis (FALS)-linked mutations in copper-zinc superoxide dismutase (SOD1) cause motor neuron death through one or more acquired toxic properties.
Familial amyotrophic lateral sclerosis with a novel Leu126Ser mutation in the copper/zinc superoxide dismutase gene showing mild clinical features and lewy body-like hyaline inclusions.
Transfection of these cell lines with DNA encoding two mutant SOD1 enzymes (G37R and G85R) associated with familial amyotrophic lateral sclerosis (FALS), produced similar, but more severe changes, i.e. even lower growth rates, higher lipid peroxidation, 3-nitrotyrosine and protein carbonyl levels, decreased GSH levels, raised GSSG levels and higher glutathione peroxidase activities.
Familial amyotrophic lateral sclerosis (FALS) has been linked in some families to dominant mutations of the SOD1 gene encoding Cu,Zn superoxide dismutase (Cu,ZnSOD).