変異プロファイリングによって特定されたDOC2タンパク質は,アピコンプレックス寄生虫エクソサイトーシスにとって不可欠です
Andrew Farrell1, Sivasakthivel Thirugnanam, Alexander Lorestani
1Department of Biology, Boston College, Chestnut Hill, MA 02467, USA.
Science (New York, N.Y.)
|January 17, 2012
まとめ
DOC2タンパク質は,アピコンプレックス寄生虫のエクソサイトーシスに不可欠です. トキソプラズマ・ゴンディ TgDOC2.1 の突然変異がマイクロネームの分泌を妨害し,宿主細胞の侵入と退去に影響を与えました.
科学分野:
- 寄生虫学とは,寄生虫学である.
- 細胞生物学 細胞生物学
- 分子生物学は分子生物学である.
背景:
- エキゾサイトーシスは,トキソプラズマ・ゴンディやプラズモディウム・ファルシパラムを含むアピコンプレックス寄生虫のリティックサイクルに不可欠です.
- DOC2タンパク質は,エクソサイトーシス中の膜融合を,カルシウムに依存した方法で調節する.
研究 の 目的:
- トキソプラズマ・ゴンディの病原性におけるTgDOC2.1の役割を調査する.
- アピコンプレックス寄生虫のエクソサイトーシスと侵入におけるDOC2タンパク質の機能を決定する.
主な方法:
- トキソプラズマ・ゴンディの条件付き変異体が生成され,宿主細胞の侵入と退去に障害がありました.
- TgDOC2.1.2.1.の突然変異を特定するために全ゲノム配列を解析を行った.
- プラズモディアム・ファルシパラム (Plasmodium falciparum) のオートロゴス遺伝子の条件性アレルを設計した.
主要な成果:
- トキソプラズマ・ゴンディの変異体は,ミクロネム分泌の欠陥を示した.
- 全ゲノム配列解析により,TgDOC2.1.の原因となる突然変異が特定されました.
- プラズモディウム・ファルシパラムのオートログも,ミクロネム分泌の欠陥を示し,主に侵入に影響を与えた.
結論:
- TgDOC2.1は,トキソプラズマ・ゴンディのミクロネーム分泌に不可欠であり,侵入と脱出に影響を与えます.
- マイクロネームの分泌は,トキソプラズマ・ゴンディの病原性にとって極めて重要です.
- マイクロネームの分泌は,Plasmodium falciparumの出血に欠かせないように見えるが,侵入において主要な役割を果たしている.
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