title: Gene expression changes induced by type IV allergy-inducible chemicals in dendritic cells.
abstract: In the present study, the changes of gene expression profile in dendritic cell (DC)-derived DC2.4 cells sensitized with two allergenic chemicals were analyzed by microarray analysis to develop a basis for an in vitro assessment system of type IV allergenic chemicals. Consequently, 26 genes were significantly up-regulated, and 53 were down-regulated in both groups. Interestingly, some of up-regulated genes were associated with the maturation process of DCs. A set of genes was further evaluated by real-time reverse transcription-polymerase chain reaction to identify the gene expression changes specifically induced by type IV allergy-inducible chemicals in DC2.4 cells, and 2 possible candidates, syndecan-1 (Sdc1) and smoothened (SMO) genes were identified. Thus, up-regulation of Sdc1 gene and down-regulation of SMO gene in DC2.4 cells may be diagnostic markers for the screening of type IV-allergenic chemicals.
authors.affiliation: Department of Veterinary Hygiene, Faculty of Agriculture, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Japan.
authors.forename: Rie
authors.initials: R
authors.lastname: Tarama
authors.forename: Hirotomo
authors.initials: H
authors.lastname: Kato
authors.forename: Youichi
authors.initials: Y
authors.lastname: Ishikawa
authors.forename: Hideki
authors.initials: H
authors.lastname: Miyaura
authors.forename: Masahiro
authors.initials: M
authors.lastname: Takeyoshi
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Iwata
mesh_terms: D000485:Allergens / Q000276:immunology / Q000494:pharmacology*; D000818:Animals; D002460:Cell Line; D003713:Dendritic Cells / Q000187:drug effects* / Q000276:immunology / Q000502:physiology*; D020869:Gene Expression Profiling; D005786:Gene Expression Regulation / Q000187:drug effects / Q000276:immunology; D051379:Mice; D020411:Oligonucleotide Array Sequence Analysis; D020133:Reverse Transcriptase Polymerase Chain Reaction
chemical_list: D000485:Allergens