DNAナノ構造の構成的ダイナミックネットワーク内のDNA酵素の触媒機能を制御する
Shan Wang1, Liang Yue1, Zohar Shpilt1
1Institute of Chemistry, The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem , Jerusalem 91904, Israel.
Journal of the American Chemical Society
|June 20, 2017
まとめ
研究者は核酸ナノ構造を用いて 適応可能な触媒システムを開発しました これらの構成ダイナミックネットワーク (CDN) は,外部のトリガーに反応し,調節可能な機能のためのコンポーネントを上調または下調することで,生物学的システムを模倣します.
科学分野:
- システム化学
- 超分子化学
- 化学生物学
背景:
- 複雑な細胞のダイナミックな化学ネットワークを模倣することは システム化学の重要な課題です
- コンスティチュショナル・ダイナミック・ネットワーク (CDN) は,環境のトリガーに自己適応することによって,生物システムを真似するための多岐にわたるアプローチを提供します.
- 核酸ナノ構造は 反応性のある分子システムを構築するための 堅固なプラットフォームを提供します
研究 の 目的:
- 核酸ナノ構造を用いたエフェクタトリガーされた構成ダイナミックネットワーク (CDN) を構築する.
- 外部刺激への反応としてこれらのCDN内の適応性のある触媒特性を示す.
- CDN構成要素のアップレギュレーションとダウンレギュレーションメカニズムを調査する.
主な方法:
- 4つの交換可能な核酸成分 (AA',BA',AB',BB') を使ってCDNを構築する.
- エフェクタ分子 (燃料鎖,K+イオン) を適用して,トリプレックスまたはG-クアドルプレックス形成を通じて選択的にCDN構成要素を安定化または不安定化します.
- 定量ゲル電泳と機能分析を用いたネットワーク再構成と触媒活動のモニタリング
主要な成果:
- インプットによるCDN構成要素のアップレギュレーションとダウンレギュレーションが実証されている.
- ダイナミックに再構成されたネットワークから生じる適応性の高い触媒特性を示した.
- カウンタートリガー (アンチ燃料ストランド,クラウンエーサー) を使用してCDNを元の状態に再構成しました.
結論:
- 核酸ベースのCDNは,調整可能な触媒機能を持つダイナミックな生物学的ネットワークを効果的に真似ることができます.
- CDNのコンポーネントのオートホーナルで切り替え可能な制御は,特定のエフェクタとカウンタートリガーの分子を介して達成できます.
- この研究は,様々な応用のための洗練された適応性分子システムを設計するための基礎を提供します.
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