シルカディアンナイト中の遺伝子発現のための転写因子応答要素
Hiroki R Ueda1, Wenbin Chen, Akihito Adachi
1Molecular Medicine Laboratories, Institute for Drug Discovery Research, Yamanouchi Pharmaceutical Company, Ltd, 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan. hiro@m.u-tokyo.ac.jp
Nature
|August 2, 2002
まとめ
この研究では,Rev-ErbA/ROR応答要素が,夜間の哺乳類の昼間時計内の遺伝子発現を調節する上で果たす重要な役割を明らかにしています. この発見は,生物リズムの複雑なネットワーク構造を理解するのに役立ちます.
科学分野:
- クロノバイオロジー クロノバイオロジー
- システム生物学 システム生物学
- 分子生物学は分子生物学である.
背景:
- 哺乳類の昼間時計には,システムの動態とネットワーク構造を理解するために不可欠な複雑なフィードバックループが含まれています.
- これらの複雑な生物学的時計を解明するには,包括的な測定と高度な技術が必要です.
研究 の 目的:
- システム生物学的なアプローチを用いて,複雑な哺乳類の昼夜時計システムを解剖する.
- 昼間の遺伝子発現に関与する重要な規制要素とネットワーク構造を特定する.
主な方法:
- 異なる照明条件下で,スプラキアズマ核と肝臓の全ゲノム表現プロファイリング.
- 転写開始部位の決定と,転写因子反応要素の生物情報分析.
- 昼間生物発光レポーターシステムを用いてin vitro検証.
主要な成果:
- 特定された日時特異的な遺伝子発現パターンと,そのトランスクリプション因子応答要素との関係.
- 昼夜中の遺伝子発現におけるRev-ErbA/ROR応答要素の役割を実証した.
- Rev-ErbA/ROR反応エレメントのBmal1と相相合,Per2と反相相合の振動の機能を確認しました.
結論:
- Rev-ErbA/ROR反応要素は,哺乳類の昼夜時計の分子機構において重要な役割を果たしています.
- この研究は,昼間の遺伝子調節のネットワーク構造とダイナミクスの洞察を提供します.
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