人間のアミノペプチダゼNは,ヒトの新型コロナウイルス229Eの受容体です
C L Yeager1, R A Ashmun, R K Williams
1Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814-4799.
Nature
|June 4, 1992
まとめ
人間のアミノペプチダゼNは,ヒトの新型コロナウイルス229E (HCV-229E) の受容体として作用し,上部呼吸道感染を促進します. この相互作用は,HCV-OC43がこの受容体を利用しないため,特異的です.
科学分野:
- ウイルス学 ウイルス学 ウイルス学
- 分子生物学は分子生物学である.
- 細胞生物学 細胞生物学
背景:
- ヒトコロナウイルス (HCV) は,上部呼吸器系感染症を引き起こす重要な病原体です.
- 2つの主要な血清群であるHCV-229EとHCV-OC43は,風邪の原因である.
研究 の 目的:
- ヒトコロナウイルス株HCV-229E.E.の細胞受容体を特定する.
- コロナウイルスの侵入におけるヒトアミノペプチダゼNの役割を調査する.
主な方法:
- HCV-229E感染を阻害するために使用されたモノクローナル抗体RBS.
- ウイルスの結合パートナーを特定するために免疫プレシピテーションを行いました.
- ヒトアミノペプチダゼNcDNAを持つマリン線維芽細胞に感染した.
- 異なるアミノペプチダゼN発現を持つ細胞におけるウイルスの複製を評価した.
主要な成果:
- 人間のアミノペプチダゼNは,HCV-229Eの特定の受容体として特定されましたが,HCV-OC43.3ではありませんでした.
- モノクローナル抗体RBSは,HCV-229E感染,免疫抑制アミノペプチダゼNを抑制し,その酵素活性を低下させた.
- 人間のアミノペプチダースNを発現するマウイン細胞は,HCV-229E感染に敏感になった.
- アミノペプチダゼNの触媒的に不活性な変異体はHCV-229Eを結合できず,その活性部位がウイルス結合に関与していることを示唆しています.
結論:
- 人間のアミノペプチダゼNは,HCV-229Eの機能的受容体です.
- アミノペプチダゼNのウイルス結合部位は,酵素の活性部位の近くにある可能性が高い.
- この発見は,HCV-229Eの侵入のメカニズムと潜在的な治療目標についての洞察を提供します.
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