A yeast-based cytotoxicity and genotoxicity assay for environmental monitoring using novel portable instrumentation.

Knight, Andrew W. and Keenan, Patrick O. and Goddard, Nicholas J. and Fielden, Peter R. and Walmsley, Richard M. (2004) A yeast-based cytotoxicity and genotoxicity assay for environmental monitoring using novel portable instrumentation. Journal of Environmental Monitoring, 6 (1). pp. 71-79. ISSN 1464-0325

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Abstract

An assay capable of simultaneously measuring both general toxicity and more subtle genotoxicity, in aqueous environmental samples, is described. The assay uses eukaryotic (yeast) cells, genetically modified to express a green fluorescent protein (GFP) whenever DNA damage, as a result of exposure to genotoxic agents, is repaired. A measure of the reduction in cell proliferation is used to characterise general toxicity producing familiar EC50 and LOEC data. The assay protocol has been developed for proposed use in the field and hence employs dedicated, portable instrumentation, the development of which is described. A range of environmentally relevant substances has been evaluated using the assay, including solutions of metal ions, solvents and pesticides. Preliminary data comparing the yeast assay's response to that of a standard Daphnia test in the analysis of the toxicity of 34 varied industrial waste effluents are also presented. The sensitivity to a wide range of substances and effluents suggests the assay should be useful for environmental toxicity monitoring.

Item Type: Journal Article
Journal or Publication Title: Journal of Environmental Monitoring
Uncontrolled Keywords: /dk/atira/pure/researchoutput/libraryofcongress/ge
Subjects:
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 21332
Deposited By: ep_ss_importer
Deposited On: 09 Jan 2009 14:24
Refereed?: No
Published?: Published
Last Modified: 16 Jul 2019 00:37
URI: https://eprints.lancs.ac.uk/id/eprint/21332

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