血管内皮細胞特異的にRobo4遺伝子が発現するメカニズムの解明

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  • 岡田 欣晃
    大阪大学大学院薬学研究科生命情報解析学分野

書誌事項

タイトル別名
  • Regulation of Endothelial Cell-specific Robo4 Gene Expression by DNA Methylation and Non-lineage Specific Transcription Factors
  • ケッカン ナイヒ サイボウ トクイテキ ニ Robo4 イデンシ ガ ハツゲン スル メカニズム ノ カイメイ

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  Studies of tissue-specific gene expression have suggested that tissue-specific transcription factors or tissue-specific combinations of non-cell-type-specific transcription factors regulate tissue-specific gene expression. Although the studies of endothelial cell (EC)-specific gene expression has identified several transcriptional activators such as SP1, ETS family proteins, and GATA proteins, their expression and combinations are not likely to be EC-specific. To investigate the mechanism of EC-specific gene expression, we analyzed the regulation mechanism of an EC-specific gene, Roundabout4 (Robo4). We identified the 3-kb Robo4 promoter and several transcription factors including SP1 and GABP that bind to the Robo4 promoter and promote Robo4 gene expression. However, we could not explain the mechanism for EC-specific Robo4 gene expression with only those factors because their expression and combination are not EC-specific. Therefore, we hypothesized the contribution of other mechanisms, especially epigenetic control, to Robo4 gene regulation and demonstrated the importance of DNA methylation for EC-specific Robo4 expression. In this review, we summarize our recent studies and discuss the novel regulation model of Robo4 gene expression by transcription factors and DNA methylation.<br>

収録刊行物

  • 薬学雑誌

    薬学雑誌 134 (7), 817-821, 2014-07-01

    公益社団法人 日本薬学会

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