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The GENIPOL European flounder Platichthys flesus L. toxicogenomics microarray: application for investigation of the response to furunculosis vaccination

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The GENIPOL cDNA microarray, comprising some 14 000 elements representing 3336 unique expressed sequence tag clusters, was developed for studies on pollutant chemical effects on hepatic gene expression in the sentinel flatfish species Platichthys flesus, the European flounder. This array derived from probes obtained by targeted cloning of xenobiotic metabolising and responsive genes, subtractive suppressive hybridization of pollutant-treated fish and subtracted normalized cDNA libraries of treated fish has been successfully utilized for diagnosing effects of prototypical pollutants, endocrine disruptors and analysis of environmental effects. In the latter context, it has been recommended by the International Council for Exploration of the Sea that the array is tested in European monitoring programmes for assessment of the biological effects of contaminants. Sequence homology is sufficiently great between P. flesus and other pleuronectid flatfish to enable satisfactory use with other species, including American winter flounder and Japanese flounder, plaice, Atlantic halibut and sole. Elucidation of the effects of pollutants requires knowledge of other affectors of gene expression, and in this context the observed effects of a bacterial infection have been studied. The ‘infection’ was experimentally applied by challenge with a vaccine containing Aeromonas salmonicida, the bacterial agent causing furunculosis in flounder and salmonids. These results show that, despite its currently limited gene coverage, application of this array is not confined to toxicology.
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Keywords: DNA microarray; European flounder; furunculosis; immune response; vaccination

Document Type: Regular Paper

Affiliations: 1: Institute of Aquaculture, University of Stirling, Stirling FK9 4LA, U.K 2: School of Biosciences, University of Birmingham, Birmingham B15 2TT, U.K.

Publication date: 2008-06-01

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