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共同対称CRISPR/dCasシステムによって折りたたまれた遺伝的にコードされた二重鎖DNAベースのナノ構造
Tiantian Wu1,2, Yuanwei Cao3,4, Qing Liu1
1CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China.
Journal of the American Chemical Society
|March 31, 2022
まとめ
研究者らは,クラスタリングされた定期間隔の短いパリンドロミック繰り返し (CRISPR) と二重鎖DNAを用いた新しいDNAナノテクノロジー戦略を開発した. この方法は,潜在的な遺伝子調節アプリケーションのための新しいハイブリッドナノ構造を作成します.
科学分野:
- バイオテクノロジー
- ナノテクノロジー
- 分子生物学
背景:
- DNAナノテクノロジーは通常,ナノ構造の構築のために単鎖DNAハイブリッド化を使用します.
- 既存の方法は複雑で安定したDNAナノ構造を作るのに 限界があります
研究 の 目的:
- 二重鎖のDNA-リボ核タンパク質 (RNP) ハイブリッドナノ構造を構築するための新しい戦略を導入する.
- DNAの折りたたみのための共価双価クラスタ化された定期的な間隔の短いパリンドロミックリピート (CRISPR) /ヌクレアースデッドCRISPR関連タンパク質 (dCas) システムを利用する.
主な方法:
- dCas9とdCas12aの融合により,刺激反応性ペプチドリンクナーにより,二価RNPが生成される.
- 誘導RNAによってRNPステップルの活性化により,二重鎖のDNA基板に特定の配列を標的にし,結合させる.
- RNPの認識と結合を通じてDNAの折り畳みを誘導し,ハイブリッドナノ構造を形成する.
主要な成果:
- DNA-RNPハイブリッドナノ構造の構築に成功しました
- 折りたたまれた状態で遺伝情報を保護するナノ構造の能力の実証
- ナノ構造の展開時に刺激に反応する遺伝子転写を示す.
結論:
- 開発された戦略は,CRISPRベースのRNPシステムで二重鎖DNA折り畳みを採用することにより,DNAナノテクノロジーの新しいアプローチを提供します.
- この方法は,安定したナノ構造の形成と制御された遺伝子調節のための遺伝的にコードされたプラットフォームを提供します.
- この発見は,高度な機能的なDNAナノデバイスを設計するための新しい道を開きます.
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