ブラジルのジカウイルスに対するワクチンによる保護

Rafael A Larocca, Peter Abbink, Jean Pierre S Peron

Nature

|June 30, 2016

まとめ

ジカウイルス (ZIKV) のDNAまたは不活性化ウイルスワクチンの単一投与で,マウスはZIKV感染から完全に保護された. ワクチンの開発が可能であることを示唆しています.

科学分野:

ウイルス学
免疫学
ワクチン学

背景:

ジカウイルス (ZIKV) は,小頭症やその他の先天性欠陥を引き起こす.
ZIKVワクチンは世界的な健康上の優先事項ですが,免疫保護メカニズムは不明です.

研究の目的:

マウスにおけるZIKVワクチンの有効性を評価する.
ZIKVに対する免疫学的相関性を特定する.

主な方法:

マウスは,ZIKV前膜および封筒 (prM- Env) を発現するプラズミドDNAワクチンまたは精製された不活性化ウイルスで免疫されました.
ワクチン接種したマウスは,小頭症を引き起こすことが知られているZIKV菌株に挑戦されました.
抗体の位数とT細胞活動を含む免疫反応を評価した.

主要な成果:

prM- Env DNAまたは不活性化ウイルスワクチンの単一の免疫は,ZIKVの挑戦に対して完全な保護を提供しました.
Env特異抗体の位数と相関する保護.
IgGの受動的移転は保護を与え,T細胞は保護に不可欠ではありませんでした.

結論:

サブユニットと不活性化されたZIKVワクチンはマウスで完全な保護を提供することができます.
Env特異抗体は重要な保護相関物です.
人間のZIKVワクチンの開発は可能である.

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