Monitoring of the subtraction process in solid-phase representational difference analysis: characterization of a candidate drug.
Gene
; 271(2): 183-92, 2001 Jun 27.
Article
en En
| MEDLINE
| ID: mdl-11418239
In this study, we have applied and evaluated a modified cDNA representational difference analysis (RDA) protocol based on magnetic bead technology to study the molecular effects of a candidate drug (N,N'-diacetyl-L-cystine, DiNAC) in a model for atherosclerosis. Alterations in a gene expression profile induced by DiNAC were investigated in a human monocytic cell line (THP-1) differentiated into macrophage-like cells by lipopolysaccharide and further exposed to DiNAC. Three rounds of subtraction have been performed and the difference products from the second and third rounds have been characterized in detail by analysis of over 1000 gene sequences. Two protocols for analysis of the subtraction products have been evaluated, a shotgun approach and size selection of both distinct fragments and band-patterned smear. We demonstrate that in order to obtain a representative view of the most abundant gene fragments, the shotgun procedure is preferred. The obtained sequences were analyzed against the UniGene and Expressed Gene Anatomy Database (EGAD) databases and the results were visualized and analyzed with the ExProView software enabling rapid pair-wise comparison and identification of individual genes or functional groups of genes with altered expression levels. The identified differentially expressed gene sequences were comprised of both genes with known involvement in atherosclerosis or cholesterol biosynthesis and genes previously not implicated in these processes. The applicability of a solid-phase shotgun RDA protocol, combined with virtual chip monitoring, results in new starting points for characterization of novel candidate drugs.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
ADN Complementario
/
Perfilación de la Expresión Génica
/
Cistina
Tipo de estudio:
Prognostic_studies
Límite:
Humans
Idioma:
En
Revista:
Gene
Año:
2001
Tipo del documento:
Article
País de afiliación:
Suecia
Pais de publicación:
Países Bajos