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Science. 2008 Mar 21;319(5870):1668-72. doi: 10.1126/science.1154584. Epub 2008 Feb 28.

TDP-43 mutations in familial and sporadic amyotrophic lateral sclerosis.

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  • 1Department of Clinical Neuroscience, King's College London, Medical Research Council (MRC) Centre for Neurodegeneration Research, and Institute of Psychiatry, London, SE5 8AF, UK.

Abstract

Amyotrophic lateral sclerosis (ALS) is a fatal motor neuron disorder characterized pathologically by ubiquitinated TAR DNA binding protein (TDP-43) inclusions. The function of TDP-43 in the nervous system is uncertain, and a mechanistic role in neurodegeneration remains speculative. We identified neighboring mutations in a highly conserved region of TARDBP in sporadic and familial ALS cases. TARDBPM337V segregated with disease within one kindred and a genome-wide scan confirmed that linkage was restricted to chromosome 1p36, which contains the TARDBP locus. Mutant forms of TDP-43 fragmented in vitro more readily than wild type and, in vivo, caused neural apoptosis and developmental delay in the chick embryo. Our evidence suggests a pathophysiological link between TDP-43 and ALS.

PMID:
18309045
[PubMed - indexed for MEDLINE]
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