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論文
- タイトル
- タイトル(英)
- Membrane topology inversion of GGCX mediates cytoplasmic carboxylation for antiviral defense.
- 参照URL
- https://researchmap.jp/Yoshitane/published_papers/52467594
- 著者
- 著者(英)
- Tomohiko Okazaki,Keiji Nozaki,Nao Morimoto,Yuta Otobe,Riho Saito,Shuntaro Abe,Miyuki Okajima,Hikari Yoshitane,Tomohisa Hatta,Shun-Ichiro Iemura,Tohru Natsume,Hidetaka Kosako,Miwako Yamasaki,Satoshi Inoue,Takashi Kondo,Haruhiko Koseki,Yukiko Gotoh
- 担当区分
- 概要
- 概要(英)
- Mitochondrial antiviral signaling protein (MAVS) is an adaptor involved in antiviral immunity, but its regulation is not fully understood. We identified carboxylation of MAVS by vitamin K (VK)-dependent γ-glutamyl carboxylase (GGCX), which was unexpected owing to the reported membrane topology of GGCX. We found that GGCX could undergo topology inversion to carboxylate MAVS within the cytoplasm. This carboxylation enhanced the ability of MAVS to induce type I interferons while suppressing the induction of apoptosis. Genetic knockout of GGCX, a VK-free diet, or depletion of VK by inhibiting VK epoxide reductase 1 with warfarin increased viral susceptibility in mice. Thus, we identified a MAVS regulatory mechanism-the existence of cytoplasmic protein carboxylation and topological inversion of GGCX-and demonstrated how modulating VK levels may influence antiviral defense.
- 出版者・発行元
- 出版者・発行元(英)
- 誌名
- 誌名(英)
- Science (New York, N.Y.)
- 巻
- 389
- 号
- 6755
- 開始ページ
- 84
- 終了ページ
- 91
- 出版年月
- 2025年7月3日
- 査読の有無
- 招待の有無
- 掲載種別
- 研究論文(学術雑誌)
- ISSN
- DOI URL
- https://doi.org/10.1126/science.adk9967
- 共同研究・競争的資金等の研究課題
研究者
吉種 光
(ヨシタネ ヒカリ)