コーンとビートルスのディメリックアプタマーを用いた細胞内多価RNA複合体の自己組み立て
Jiahui Wu1, Nina Svensen1, Wenjiao Song1
1Department of Pharmacology, Weill Cornell Medicine, Cornell University, New York, New York 10065, United States.
Journal of the American Chemical Society
|March 16, 2022
まとめ
研究者は,二重アプタマーを用いて哺乳類の細胞内での自己組み立てRNA構造の新しい方法を開発した. この技術により,異なるRNAとRNAタンパク質の組み立てができ,以前の安定性と免疫経路の課題を克服できます.
科学分野:
- 分子生物学
- 生物化学
- 合成生物学
背景:
- DNAとRNAは様々な構造に 自己組織化できます
- 哺乳類の細胞で核酸を自己組織化するための現在の方法は,先天的なRNA免疫の不安定性と活性化によって制限されています.
- 細胞の自己組織化反応を 遺伝子でコード化することは まだ課題です
研究 の 目的:
- 生きた哺乳類の細胞内でRNAの自己組み立てを誘導する方法を開発する.
- 異なるRNAとRNAタンパク質の組成を作れるように
- 既存の自己組み立てアプローチの限界を克服する.
主な方法:
- 二次性フルオロゲン性RNAアプタマー (トウモロコシとビート) をRNA構造に組み込む.
- トウモロコシとビートアプタマーの自己二分化特性を利用してRNA-RNA相互作用を誘導する.
- トウモロコシとビートのホモディメリゼーションの特異性を利用して,異なるRNA-タンパク質アセンブリをコードする.
主要な成果:
- ディメリックアプタマーは,多価RNA-RNA相互作用により,細胞内の大きなクラスターに自己組織化することを可能にします.
- トウモロコシとビートのアプタマーはホモディマーを形成するが,ヘテロディマーではないので,マルチプレキシングが可能である.
- タンパク質はこれらの自己組織化RNA構造に組み込まれ,細胞内RNA-タンパク質を遺伝的にコードします.
結論:
- ディメリックアプタマーは,哺乳類の細胞でRNAの自己組み立てを誘導するための新しいアプローチを提供します.
- この方法は,同じ細胞内の異なるRNAとRNAタンパク質の組成を複製することを可能にします.
- この発見は,指向型RNA自己組み立てによる細胞内RNAタンパク質組成の遺伝的コーディングの可能性を示しています.
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