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Titolo:
Development of a toxicological gene array and quantitative assessment of this technology
Autore:
Bartosiewicz, M; Trounstine, M; Barker, D; Johnston, R; Buckpitt, A;
Indirizzi:
Univ Calif Davis, Sch Vet Med, Dept Mol Biosci, Davis, CA 95616 USA Univ Calif Davis Davis CA USA 95616 Dept Mol Biosci, Davis, CA 95616 USA Mol Dynam, Sunnyvale, CA 94086 USA Mol Dynam Sunnyvale CA USA 94086Mol Dynam, Sunnyvale, CA 94086 USA
Titolo Testata:
ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS
fascicolo: 1, volume: 376, anno: 2000,
pagine: 66 - 73
SICI:
0003-9861(20000401)376:1<66:DOATGA>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
EXPRESSION PATTERNS; MICROARRAY SYSTEM; CDNA MICROARRAY; DISCOVERY; LIVER;
Keywords:
DNA arrays; beta-napthoflavone; gene expression;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Bartosiewicz, M Univ Calif Davis, Sch Vet Med, Dept Mol Biosci, Davis, CA 95616 USA Univ Calif Davis Davis CA USA 95616 , Davis, CA 95616 USA
Citazione:
M. Bartosiewicz et al., "Development of a toxicological gene array and quantitative assessment of this technology", ARCH BIOCH, 376(1), 2000, pp. 66-73

Abstract

High-density arrays of DNA bound to solid substrates offer a powerful approach to identifying changes in gene expression in response to toxicants, While DNA arrays have been used to explore qualitative changes in gene regulation, less attention has focused on the quantitative aspects of this technology. Arrays containing expressed sequence tags for xenobiotic metabolizingenzymes, proteins associated with glutathione regulation, DNA repair enzymes, heat shock proteins, and housekeeping genes were used to examine gene expression in response to beta-naphthoflavone (beta-NF), Upregulation of cytochrome P4501a1 (Cyp1a1) and 1a2 in mouse liver was maximal 8 h after beta-NF administration. Significant upregulation of Cyp1a2 was noted at beta-NF doses as low as 0.62 and 1.2 mg/kg when gene expression was measured by microarray or Northern blotting, respectively. Maximal Cyp1a2 induction is 5-fold by Northern analysis and 10-fold by microarray, Induction of Cyp1a1 was15-and 20-fold by Northern and microarray analysis, respectively, The coefficient of variation for spot to spot and slide to slide comparisons was < 15%; this variability was smaller than interanimal variability (18-60%). Comparison of mRNA expression in control animals indicated that there are differences in labeling/detection associated with Cy3/Cy5 dyes; accordingly, experiments must include methods for establishing baseline signals for all genes, We conclude that the dynamic range and sensitivity of DNA microarrayson glass slides is comparable to Northern blotting analysis and that variability of the data introduced during spotting and hybridization is less than the interanimal variability. (C) 2000 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 15:56:29