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Vibrio cholerae: Model Organism to Study Bacterial Pathogenesis - Interview
Published on: May 28, 2007
コロニー化因子は,Vibrio choleraeの環境生存と人間の感染を結びつけている
Thomas J Kirn1, Brooke A Jude, Ronald K Taylor
1Department of Microbiology and Immunology, Dartmouth Medical School, Hanover, New Hampshire 03755, USA.
Nature
|December 13, 2005
まとめ
新しく発見されたタンパク質は,Vibrio choleraeが動物プランクトンとヒトの細胞の両方に結合するのを助けます. このタンパク質は,細菌にとって極めて重要です.
科学分野:
- 微生物学 微生物学とは
- バクテリア病原菌の発生
- 分子生物学は分子生物学である.
背景:
- Vibrio choleraeを含む多くの病原性細菌は,宿主体内外の両方で生存戦略を必要とします.
- グラム陰性水生細菌であるVibrio choleraeは,環境の生存と栄養素の獲得のために,動物プランクトンの外骨格に一般的に結合します.
- 人間の小腸の植民地化は,Vibrio choleraeがコレラ毒素を産生し,病気を引き起こすために不可欠です.
研究 の 目的:
- Vibrio choleraeの生存とコロニー化のメカニズムを調査する.
- 環境表面 (動物プランクトン) と宿主細胞 (ヒト腸内皮質) に結合する要因を特定する.
- 環境の植民地化要因が人間の腸の植民地化に必要なものと共有されているという仮説を検証する.
主な方法:
- 結合に関与する細菌の表面タンパク質の識別.
- 動物プランクトンおよびヒトの上皮細胞に対する細菌の粘着を測定するアッセイ.
- 結合の分子基盤を決定する生化学的分析.
主要な成果:
- 一つのタンパク質が,Vibrio choleraeによる効率的な腸内植民に不可欠であると特定されました.
- このタンパク質は動物プランクトンとヒトの上皮細胞の両方への結合を媒介する.
- タンパク質は,両方の表面に存在する特定の糖分に結合することによって機能します.
結論:
- 共同のコロニー化因子は,環境におけるVibrio choleraeの生存と,人間に感染する能力を促進する.
- このタンパク質は,コレラに対する介入の潜在的なターゲットです.
- 共有された環境と宿主コロニー化のメカニズムを理解することは,細菌性疾患の制御の鍵です.
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