170kDのアメーブ粘着性グリコプロテインとヒトβ2インテグリンとの免疫学的類似性
S A Adams1, S C Robson, V Gathiram
1University of Cape Town/Medical Research Council Liver Research Centre, Medical School, South Africa.
Lancet (London, England)
|January 2, 1993
まとめ
アメビアシスの毒性には,腸に結合するEntamoeba histolyticaトロフォゾイトが含まれています. この結合タンパク質はヒトβ2インテグリンとエピトープを共有しており,潜在的に侵入メカニズムを説明している.
科学分野:
- 免疫学 免疫学とは
- 寄生虫学とは,寄生虫学である.
- 分子生物学は分子生物学である.
背景:
- Entamoeba histolyticaによって引き起こされるアメビアシスは,重要な世界的な健康問題です.
- 毒性は,トロフォゾサイトが結腸内皮質に付着することと関連しています.
- 粘着には260 kDのレクチンがあり, 170 kDのサブユニットが結合を媒介する.
研究 の 目的:
- 腸内表皮に結合するEntamoeba histolytica trophozoiteの分子基盤を調査する.
- 寄生虫の結合タンパク質と宿主細胞の粘着分子との潜在的な類似性を特定する.
主な方法:
- マイクロサイトフルオロメトリーは,タンパク質の相互作用を分析するために使用されました.
- タンパク質のエピトープを比較するために,ウェスタン・ブロッティングが採用されました.
主要な成果:
- Entamoeba histolyticaレクチンの170kDサブユニットは,ヒトβ2インテグリンとエピトープを共有しています.
- ヒューマンβ2インテグリンは,白血球の結合とシグナル伝達に関与する細胞表面のグリコプロテインです.
結論:
- 特定された免疫学的類似性は,Entamoeba histolytica trophozoitesが結腸内皮質に結合し,侵入するメカニズムを説明する可能性があります.
- この発見は,アメービアシスに対する治療的介入の潜在的なターゲットを提供します.
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