インテグリンアルファvβ3とアルファvβ5はアデノウイルスの内部化を促進するが,ウイルスの結合を促進しない
T J Wickham1, P Mathias, D A Cheresh
1Scripps Research Institute, Department of Immunology, La Jolla, California 92037.
Cell
|April 23, 1993
まとめ
アデノウイルスは,細胞の結合と内部化のために独特のウイルスタンパク質を使用します. インテグリンアルファvβ3とアルファvβ5は,アデノウイルスへの初期結合ではなく,アデノウイルスの吸収に不可欠です.
科学分野:
- ウイルス学 ウイルス学 ウイルス学
- 細胞生物学 細胞生物学
- 分子生物学は分子生物学である.
背景:
- アデノウイルス感染は,ウイルスの結合と宿主細胞への侵入を伴う.
- ウイルスは,結合のための繊維タンパク質と,Arg-Gly-Asp配列を持つペントン基を使用し,インテグリン関与を示唆しています.
研究 の 目的:
- アデノウイルスの内部化におけるインテグリンの特定の役割を解明する.
- インテグリンがアデノウイルス感染を媒介するメカニズムを調査する.
主な方法:
- インテグリン受容体 (アルファvβ3,アルファvβ5) と溶性ペントン塩基に対する抗体を利用した.
- アルファvインテグリン発現のある細胞とない細胞におけるアデノウイルス内化の研究.
- 欠乏した細胞におけるインテグリン発現を回復するためにcDNAトランスフェクションを使用した.
主要な成果:
- 抗体と溶性ペントン塩基は,アデノウイルスの内部化を阻害したが,結合を阻害しなかった.
- アルファVインテグリンが欠けている細胞はアデノウイルスに結合するが,ウイルスを内化することはなかった.
- アルファvインテグリン発現を復元することで,アデノウイルスの内部化と感染を可能にしました.
結論:
- アデノウイルスへの結合と内部化は,異なる協力的プロセスである.
- 繊維タンパク質は結合を媒介し,アルファVインテグリン (アルファVベータ3,アルファVベータ5) は内部化を媒介する.
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