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アデノウイルスがヒトの細胞受容体,CARに結合するメカニズムの構造分析
M C Bewley1, K Springer, Y B Zhang
1Biology Department, Brookhaven National Laboratory, Upton, NY 11973, USA.
Science (New York, N.Y.)
|November 24, 1999
まとめ
結晶構造は,アデノウイルス繊維ノブがコクサッキーとアデノウイルス受容体 (CAR) に結合する方法を明らかにし,抗ウイルス薬と遺伝子治療ベクトル改変の潜在的な標的を特定します.
科学分野:
- 構造生物学 構造生物学とは
- ウイルス学 ウイルス学 ウイルス学
- 分子相互作用 分子相互作用
背景:
- ウイルスと宿主細胞の結合は,感染に不可欠ですが,十分に理解されていません.
- アデノウイルスは,その繊維ノブドメインを使用して宿主細胞に結合します.
研究 の 目的:
- アデノウイルス繊維ノブがヒトの受容体,CARに結合する分子基盤を決定する.
- 抗ウイルス療法と遺伝子治療ベクトル開発の潜在的な標的を特定する.
主な方法:
- X線結晶学を用いて,アデノウイルス繊維ノブドメインの構造を,CARドメインIとの複合で得られた.
主要な成果:
- 結晶構造は,C.A.R.と接触するノブ上の表面露出のループによって媒介される高親和結合を明らかにします.
- トポロジーの不一致は,インターフェースで空洞とチャネルを作り,潜在的な薬物標的を示唆します.
- 結合特異性の重要な決定要因が特定されました.
結論:
- 決定された構造は,アデノウイルス-CARの相互作用に関する重要な洞察を提供します.
- 発見は,新しい抗ウイルス戦略の開発と,変異トロピズムを持つアデノウイルス遺伝子治療ベクトルのエンジニアリングを導く可能性があります.
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