ヒトポリオマウイルス (JCV) は,セロトニン受容体を用いて細胞に感染します
Gwendolyn F Elphick1, William Querbes, Joslynn A Jordan
1Department of Molecular Microbiology and Immunology, Brown University, Providence, RI 02912, USA.
Science (New York, N.Y.)
|November 20, 2004
まとめ
セロトニン5HT2A受容体は,進行性多焦点白脳症を引き起こすジョン・カニンガムウイルス (JCV) の細胞入り口です. この受容体をブロックすることで,この致命的な脳疾患を治療することができます.
科学分野:
- 神経ウイルス学 神経ウイルス学
- 分子および細胞生物学
- 免疫学 免疫学とは
背景:
- 進行性多焦点白脳症 (PML) は,免疫不全の個体においてジョン・カニンガムウイルス (JCV) によって引き起こされる致命的な脱ミエリン性疾患である.
- JCVの細胞受容体を特定することは,ウイルスの侵入を理解し,治療戦略を開発するために不可欠です.
研究 の 目的:
- JCVがヒトの膠質細胞に侵入するために使用する細胞受容体を特定する.
- PMLに対する治療的介入のためにこの受容体を標的とする可能性を調査する.
主な方法:
- 5HT2A受容体アンタゴニストとモノクローナル抗体がJCV感染を阻害するために利用されました.
- 5HT2A受容体陰性細胞でトランスフェクション実験を行った.
- 従業員は5HT2A受容体とJCVをタグ付けし,ウイルスの内部化と局所化を追跡しました.
主要な成果:
- セロトニン5HT2A受容体 (5HT2AR) は,ヒトの膠質細胞におけるJCVの細胞受容体として特定されました.
- 5HT2A受容体アンタゴニストと抗体は,JCV感染を著しく抑制しました.
- 5HT2ARによる5HT2A受容体陰性細胞の感染は,JCVの感染性を回復させ,その後抗体によって遮断された.
- 内部化されたJCVは5HT2A受容体とコロカライズされ,エンドソームのコンパートメントに存在します.
結論:
- 5HT2A受容体は,ヒトの膠質細胞へのJCVの侵入に不可欠です.
- 5HT2A受容体を抗体または抗体で標的にすることは,進行性多焦点白血球症の治療に有望である.
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