KAT8によるヒストンH3K27アセチル化は,不活性化された白斑症候群ウイルスによって誘発されたの抗ウイルス訓練免疫を維持する

Li-Xia Lv¹, Peng Zhang¹, Ying Ma¹

¹Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, Shandong, China.

Communications biology

|August 30, 2025

まとめ

カニはKAT8が介在する表遺伝的変化によってウイルスに対する免疫力を育み抗ウイルス防御を強化しますこの発見は,エビの養殖における病気の制御のための新しい戦略を提供します.

科学分野:

アクアカルチャー
免疫学
エピジェネティクス

背景:

WSSVのようなウイルス病は,エビの養殖に重大な経済的損失をもたらします.
脊椎動物における訓練された免疫メカニズムを理解することは病気の制御に不可欠です

研究の目的:

抗ウイルス訓練による免疫の分子メカニズムを解明する
WSSVに対するエビの防御を強化する重要な要因を特定する.

主な方法:

ライシンアセチルトランスフェラーゼKAT8とヒストンH3K27acがエビの抗ウイルス防御における役割を調査した.
訓練された免疫を誘発するために,紫外線で不活性化されたWSSV (UV-WSSV) を利用した.
分析された代謝変化 (糖分解,TCAサイクル) と遺伝子発現 (Dorsal,Vago5,AMPs).

主要な成果:

UV-WSSVトレーニングは,KAT8に依存するH3K27acを誘導し,抗ウイルス免疫を強化します.
代謝再プログラム (糖分解とTCAサイクル増加) は,KAT8活性に対するアセチル-CoAを増加させる.
H3K27acは,背中の発現を調節し,糖分解遺伝子を活性化させ,代謝-表遺伝的フィードバックループを作成します.

結論:

保存されたKAT8-H3K27ac経路は,メタボリック・エピジェネティック・クロストラックを通じて無脊椎動物の訓練された免疫を駆動する.
この経路は,抗菌性ペプチドとサイトカインの産生を刺激することで,抗ウイルス反応を強化します.
発見は水産養殖における抗ウイルス戦略の開発の基礎となる.

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