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卵巣発達における組織選択性TBP関連因子TAFII105の必要性
R N Freiman1, S R Albright, S Zheng
1Department of Molecular and Cell Biology, Howard Hughes Medical Institute, University of California at Berkeley, Berkeley, CA 94720-3204, USA.
Science (New York, N.Y.)
|September 15, 2001
まとめ
転写因子TFIIDのTAFII105サブユニットは,マウスの卵巣の発達と生殖能力に不可欠です. 欠陥の卵泡発育と信号伝達経路の障害により,その欠如は不妊症を引き起こす.
科学分野:
- 分子生物学は分子生物学である.
- 発達生物学 発達生物学について
- 生殖生物学 生殖生物学
背景:
- 転写因子TFIIDは,RNAポリメラーゼIIによる遺伝子転写の重要な調節因子である.
- TFIIDには,TBPと様々なTAFIIサブユニットが含まれ,その中には組織特異的な発現を示すものもあります.
- 臓器発育における組織選択性TAFIIサブユニットの役割は完全に理解されていません.
研究 の 目的:
- マウスの卵巣の発達と機能におけるTFIIDのTAFII105サブユニットの機能を調査する.
- TAFII105欠乏が雌マウスの卵泡発育と生殖能力に与える影響を調べた.
主な方法:
- TAFII105遺伝子が欠けている雌マウスの生成と分析.
- 卵巣の形態学と卵泡発育の組織学的な検査.
- 影響を受けたシグナル伝達経路を特定するために遺伝子発現プロファイリング.
主要な成果:
- TAFII105が欠けている雌マウスは生存可能だが不妊である.
- TAFII105の欠乏症は,卵泡生成の欠陥につながる.
- 卵巣細胞におけるTAFII105の制限された発現は,卵巣の機能に不可欠である.
- 遺伝子発現プロファイリングは,TAFII105欠乏性卵巣におけるインヒビン-アクティビンのシグナル伝達経路の欠陥を明らかにした.
結論:
- 組織選択性TAFII105サブユニットは,マウスの卵巣の適切な発達と機能に不可欠です.
- TAFII105は,フォリキュロゲネシスに重要な遺伝子の転写を媒介する.
- TAFII105は,哺乳類の転写機構の細胞型特異成分で,生殖過程に関与している.
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