腸内皮質細胞タンパク質のリン酸化は,腸内病原性Escherichia coliの下痢で起こります
H A Manjarrez-Hernandez1, T J Baldwin, A Aitken
1Laboratory of Protein Structure, National Institute for Medical Research, Mill Hill, London, UK.
Lancet (London, England)
|February 29, 1992
まとめ
エントロパトゲン性Escherichia coli (EPEC) は,腸内細胞を損傷することによって下痢を引き起こす. EPEC感染は,ミオシン・ライトチェーンとアクチンを含む腸内細胞の細胞骨格の変化を引き起こし,潜在的にタンパク質キナーゼの活性化によるものです.
科学分野:
- 微生物学 微生物学とは
- 細胞生物学 細胞生物学
- パトジェネシス (病原生)
背景:
- エントロパトゲン性Escherichia coli (EPEC) は,小腸の腸内細胞における組織病理学的病変を通して下痢を引き起こす.
- EPEC感染は,細胞骨格の損傷と腸内細胞のブラッシュ・ボーダー・マイクロビルの喪失につながる.
研究 の 目的:
- EPEC感染に対する反応として,腸細胞タンパク質のリン酸化を調査する.
- EPEC誘発の細胞骨格の変異に関与する主要なタンパク質を特定する.
主な方法:
- 免疫プレシピテーションは,EPECに感染した腸内細胞のリン酸化タンパク質を特定するために使用されました.
- アクチンとミオシン濃度は,細菌感染の部位で評価されました.
主要な成果:
- ミオシン・ライトチェーンは,EPEC感染した腸細胞における主要なリン酸化タンパク質として特定されました.
- EPEC感染の部位でアクチンとミオシンの高濃度が見つかりました.
- バクテリアの粘着は,信号伝達経路を通じて細胞骨格の変化を直接引き起こすようです.
結論:
- EPEC感染は,ミオシン・ライトチェーンとアクチンを含む腸細胞細胞骨格に重大な変化を誘発する.
- これらの細胞骨格の変化は,細菌の粘着によって引き起こされるタンパク質キナーゼの活性化によって媒介されることがあります.
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