バクテリアの侵入: 侵入性病原体のパラダイム
Pascale Cossart1, Philippe J Sansonetti
1Unité des Interactions Bactéries-Cellules, INSERM Unité 604, Département de Biologie Cellulaire et Infection, Institut Pasteur, 28 Rue du Docteur Roux, Paris 75015, France. pcossart@pasteur.fr
まとめ
侵襲性細菌は,侵入と生存のために非免疫細胞を乗っ取ります. 細胞内で複製し,アクチンベースの運動性によって新しい細胞に広がるためのユニークな戦術を使用します.
科学分野:
- 微生物学 微生物学とは
- 細胞生物学 細胞生物学
- 感染症 感染症は感染症です.
背景:
- 多くの病原性細菌が宿主細胞を侵略し,感染を確立する上で重要なステップとなります.
- 非ファゴサイト細胞は,典型的には病原菌を包み込むことに関与しないが,しばしば標的となる.
- バクテリアの侵入戦略は,宿主細胞のプロセスを操作することを含む.
研究 の 目的:
- 細菌が非ファゴサイト細胞に侵入するメカニズムを解明する.
- 細菌が宿主細胞内でどのように生き残り,複製するかを理解する.
- アクチンベースの運動性を含むバクテリアの拡散戦略を探求する.
主な方法:
- 侵入性細菌と宿主細胞の間の分子相互作用を調査する.
- ファゴソームの成熟経路の細菌による操作を分析する.
- 生細胞画像を用いて細菌の細胞間拡散を観察する.
主要な成果:
- 侵襲性細菌は,非ファゴサイト細胞による自身のファゴサイト吸収を積極的に誘導する.
- バクテリアは,生存と複製のための細胞内ニッチを確立します.
- いくつかの種は,細胞から細胞への拡散のためにアクチンベースの運動性を利用します.
結論:
- バクテリアの侵入には,宿主細胞の機械の洗練された操作が含まれます.
- 感染には共通の戦略と独特の種特有の戦術が用いられる.
- これらのメカニズムを理解することは,抗菌療法の開発の鍵です.
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