核受容体コアプレッサーの複合的な役割は,転写と発達におけるものです
K Jepsen1, O Hermanson, T M Onami
1Howard Hughes Medical Institute, Department of Biology, University of California, San Diego, La Jolla 92093, USA.
Cell
|October 13, 2000
まとめ
核受容体コアプレッサー1 (N-CoR) は,遺伝子抑制と活性化の両方を調節し,メタゾーン発育に不可欠です. 遺伝子消去の研究は,N-CoRRを明らかにしています.
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
- エピジェネティクス エピジェネティクス
背景:
- トランスクリプション抑制は,メタゾオンの発達に不可欠である.
- N-CoRやSMRTのようなコアプレッサーは,重要なレギュレーターです.
- N-CoRは,様々な開発プロセスにおいて重要な役割を果たしています.
研究 の 目的:
- 開発中の転写調節におけるN-CoRの役割を調査する.
- N-CoRが抑圧と活性化の両方への関与を理解するために.
- 遺伝子特異的調節におけるコアプレッサーとヒストン脱エチラゼの機能を明らかにする.
主な方法:
- ネズミの遺伝子消去研究 (N-CoR遺伝子消去されたマウス).
- 様々な組織と細胞タイプの転写パターンの分析.
- 核受容体媒介およびREST/NRSF媒介による抑圧におけるN-CoRの役割を調査する.
- レチノ酸反応要素の活性化におけるN-CoRの機能を検証する.
主要な成果:
- N-CoRの消去は,中枢神経系,赤血球,シモ細胞系における発達阻害を引き起こした.
- N-CoRは,核受容体とMADによる短期的な活性抑制に不可欠です.
- N-CoRは,REST/NRSFによって仲介される長期抑制イベントのサブセットに求められます.
- 予期せぬことに,レチノ酸反応要素の転写活性化には,N-CoRとデアセチラゼが必要です.
結論:
- N-CoRは,発達中の遺伝子特異の転写調節の重要な媒介である.
- 特定のコアプレッサーとヒストン脱エチラゼの組み合わせが遺伝子活動を調整する.
- これらの発見は,発達プロセスにおけるコアプレッサーの複雑で文脈に依存する役割を強調しています.
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