Disease mechanisms revealed by transcription profiling in SOD1-G93A transgenic mouse spinal cord.

Abstract:

:Mutations of copper,zinc-superoxide dismutase (cu,zn SOD) are found in patients with a familial form of amyotrophic lateral sclerosis. When expressed in transgenic mice, mutant human cu,zn SOD causes progressive loss of motor neurons with consequent paralysis and death. Expression profiling of gene expression in SOD1-G93A transgenic mouse spinal cords indicates extensive glial activation coincident with the onset of paralysis at 3 months of age. This is followed by activation of genes involved in metal ion regulation (metallothionein-I, metallothionein-III, ferritin-H, and ferritin-L) at 4 months of age just prior to end-stage disease, perhaps as an adaptive response to the mitochondrial destruction caused by the mutant protein. Induction of ferritin-H and -L gene expression may also limit iron catalyzed hydroxyl radical formation and consequent oxidative damage to lipids, proteins, and nucleic acids. Thus, glial activation and adaptive responses to metal ion dysregulation are features of disease in this transgenic model of familial amyotrophic lateral sclerosis.

journal_name

Ann Neurol

journal_title

Annals of neurology

authors

Olsen MK,Roberds SL,Ellerbrock BR,Fleck TJ,McKinley DK,Gurney ME

doi

10.1002/ana.1252

keywords:

subject

Has Abstract

pub_date

2001-12-01 00:00:00

pages

730-40

issue

6

eissn

0364-5134

issn

1531-8249

journal_volume

50

pub_type

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