QSER1はDNAメチル化バレーをデノボメチル化から保護する
Gary Dixon1,2, Heng Pan3, Dapeng Yang2
1Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, 1300 York Avenue, New York, NY 10065, USA.
まとめ
研究者らが発見したQSER1は 新種のDNAメチル化レギュレータで 発達遺伝子の保護に不可欠です 異常なメチル化を防止し,健康な細胞機能を維持し,病気を予防します.
科学分野:
- エピジェネティクスと遺伝子調節
- 哺乳類の発達
- ゲノミクス
背景:
- DNAメチル化は哺乳類の発達に不可欠であり,その異常は病理に関連しています.
- DNAメチル化酵素は知られているが,メチル化環境を調節する彼らの協力メカニズムは不明である.
- これらの制御ネットワークを理解することは 発達過程と病原病の解読に不可欠です
研究 の 目的:
- ゲノム全体のスクリーニングアプローチを使用してDNAメチレーションの新規調節体を特定する.
- DNAメチル化パターンの維持における非特徴化されたQSER1遺伝子の機能を明らかにする.
- QSER1 と TET1 などの他の表遺伝子変容体との相互作用を調査する.
主な方法:
- ヒト胚幹細胞における全ゲノムCRISPR-Cas9スクリーニング
- 効率的なスクリーニングのためにノックインDNAメチル化レポーターシステムを使用した.
- 相互作用と機能を検証するために遺伝的および生化学的測定を行った.
主要な成果:
- QSER1をトップヒットとして特定し DNAメチル化を調節する上で重要な役割を明らかにしました
- QSER1は,特にDNAメチル化渓谷の双価プロモーターとバランス強化剤の守護者として作用することを実証した.
- QSER1がTET1と連携する遺伝的および生化学的証拠を示した.
結論:
- QSER1はDNAメチロームの新しく重要なレギュレータです.
- QSER1とTET1は,DNMT3による異常なde novoメチル化から発達の遺伝子発現を保護するために協力する.
- この相互作用は,細胞のアイデンティティを維持し,表遺伝子異常に関連した病理的状態を予防するために重要です.
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