Genome‐wide screening of dioxin‐responsive genes in fetal brain: bioinformatic and experimental approaches

• Hideki Fujita

• Hazuki Samejima

• Noriyuki Kitagawa

• Takayuki Mitsuhashi

• Takanori Washio

• Junzo Yonemoto

• Masaru Tomita

• Takao Takahashi

• Kenjiro Kosaki

書誌事項

タイトル別名

• Genome-wide screening of dioxin-responsive genes in fetal brain: bioinformatic and experimental approaches

抄録

ABSTRACT  Many of the effects of dioxins, which are potent environmental pollutants and teratogens, are mediated through the aryl hydrocarbon receptor, also known as the dioxin receptor. The purpose of the present study was to characterize dioxin-responsive genes in a comprehensive manner using two complementary approaches: bioinformatic analysis and microarray analysis. First, we characterized the overall distribution of the cis-regulatory element for the dioxin-responsive element sequence (DRE) ‘gcgtg’ within putative promoter regions. We assembled the upstream sequences  10 kb from the transcription start site and evaluated their location and frequency in the human and mouse genomes. Second, we characterized the expression profile of mouse embryonic day 12 fetal brain exposed to 2,3,7,8-tetrarchlorodibenzo-p-dioxin. The distributions of  26 680 DREs among 2843 human genes and  98 711 DREs among 18 541 mouse genes were examined. In both species, the DREs tended to be located close to the transcription start site. Forty genes exhibited significant induction or repression following dioxin exposure in fetal mice. The set of genes exhibited a strong functional coherence, with statistically significant enrichment in organogenesis and the DNA-dependent regulation of transcription, according to Gene Ontology annotations. In both humans and mice, DREs were preferentially distributed close to transcription start sites. Evolutionary conservation of this unique DRE distribution pattern suggests that DREs may be involved in transcriptional regulation. In mice, prenatal dioxin exposure altered the expression of 10 transcription factors, many of which have been documented to play a role in organogenesis. These genes may represent potential mediators of dioxin’s effects in fetal tissues.

収録刊行物

• 日本先天異常学会会報

  日本先天異常学会会報 46 (3), 135-143, 2006

  日本先天異常学会

キーワード

• Developmental Biology
• Embryology
• General Medicine
• Pediatrics, Perinatology and Child Health

詳細情報

• CRID: 1390007515115644928
• NII論文ID: 10027385612
• NII書誌ID: AN10066760
• DOI: 10.24540/cgafa.46.3_135
• DOI: 10.1111/j.1741-4520.2006.00116.x
• ISSN: 24331503
• ISSN: 17414520
• ISSN: 00372285
• ISSN: 09143505
• Web Site: https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1741-4520.2006.00116.x
• Web Site: https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1741-4520.2006.00116.x
• Web Site: https://search.jamas.or.jp/link/ui/2007071947
• 本文言語コード: en
• データソース種別:
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  • Crossref
  • CiNii Articles
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