DDX17による幹回路認識は,miRNA処理と抗ウイルス防御を促進します.
Ryan H Moy1, Brian S Cole2, Ari Yasunaga1
1Department of Microbiology, Penn Genome Frontiers Institute, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA.
Cell
|August 16, 2014
まとめ
DEAD-boxヘリケーズDDX17は,リフトバレー熱ウイルス (RVFV) 感染を抑制する. この免疫的役割は保存され,インターフェロンとは独立しており,DDX17がウイルスRNAと宿主マイクロRNA前駆体と結合することを含む.
科学分野:
- 分子生物学は分子生物学である.
- ウイルス学 ウイルス学 ウイルス学
- 免疫学 免疫学とは
背景:
- DEAD-boxヘリカーゼは,RNAの代謝に不可欠である.
- 新興の証拠は,免疫反応への彼らの関与を示しています.
- リフトバレー熱ウイルス (RVFV) は,健康に重大なリスクをもたらす.
研究 の 目的:
- RVFV.に対する免疫におけるDEAD-boxヘリカーゼDDX17の役割を調査する.
- DDX17の機能が保存され,インターフェロンから独立しているかどうかを判断する.
主な方法:
- ドロソフィラとヒト細胞におけるRNA干渉 (RNAi) スクリーニング.
- ウイルス複製アッセイ.
- クロスリンクング・イムノプレシピテーション・ハイ・スループット・シーケンシング (CLIP-seq).
主要な成果:
- DDX17 (ドロソフィラのRm62) の喪失は,RVFVの感染を強化した.
- 人間のDDX17が枯渇するが,DDX5は枯渇せず,RVFVの複製が増加した.
- DDX17は,処理のために宿主プリミRNA幹ループと,感染を制限するためにウイルスRNA幹ループと結合します.
結論:
- DDX17は,RVFV感染を制限する際に,インターフェロンから独立して,保存された役割を果たします.
- DDX17は,ホストmiRNAの生殖を促進し,ウイルスのRNAを制限する二重の幹ループ認識を示しています.
- DDX17は,構造化されたウイルスのRNA要素のサイトプラズマセンサーとして機能します.
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