Elsevier

Neuroscience Letters

Volume 302, Issues 2–3, 20 April 2001, Pages 146-150
Neuroscience Letters

Cultured glial cells are resistant to the effects of motor neurone disease-associated SOD1 mutations

https://doi.org/10.1016/S0304-3940(01)01686-XGet rights and content

Abstract

Free radical damage has been implicated in the pathophysiology of motor neurone disease (MND); mutations have been identified in the gene encoding Cu/Zn superoxide dismutase (SOD1). There is evidence that glial cell dysfunction may contribute to motor neurone injury, but the exact role of glial cells in MND has yet to be established. The aim of this study was to determine whether expression of mutant SOD1 affects the response of glia to oxidative stress. Stable C6 glioma cells expressing mutant SOD1 and cortical astrocyte cultures from G93A-SOD1 transgenic mice were exposed to: xanthine/xanthine oxidase; hydrogen peroxide; A23187 and 3-morpholinosydonimine. Cell viability was measured using the 3-(4,5-dimethyl-thiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. Neither C6 glioma cells nor cortical astrocytes expressing mutant SOD1 were more susceptible to any of the free radical generating systems compared to control cells. These results suggest that astrocytes are resistant to the toxic effects of mutant SOD1 widely reported for neuronal cells.

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Acknowledgements

This study was supported by the Motor Neurone Disease Association, UK and the Wellcome Trust. P.J.S. was supported as a Wellcome Senior Fellow in Clinical Science.

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Cited by (0)

1

Present address: Neurogenetics Laboratory, Birdsall Building, Mayo Clinic, 4500 San Pablo Drive, Jacksonville, FL 32224, USA.

2

Present address: Zeneca Central Toxicology Laboratory, Alderley Park, Macclesfield, Cheshire, SK10 2RX.

3

Present address: Department of Neurology, E Floor, Medical School, University of Sheffield, Beech Hill Road, Sheffield, S10 2RX, UK.

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