中性粒子のMac-1およびMEL-14結合タンパク質は,化学作用因子によって逆調節される
T K Kishimoto1, M A Jutila, E L Berg
1Department of Pathology, Stanford University, CA 94305.
まとめ
中性粒子のMac-1は活性化によって増加し,gp100MEL-14は急速に脱落する. この流出は,活性化された中性粒子が炎症中に健康な組織を損傷することを防ぐ可能性があります.
科学分野:
- 免疫学 免疫学とは
- 細胞生物学 細胞生物学
- 炎症の研究 炎症の研究
背景:
- 中性粒子の増流は炎症の際に極めて重要であり,Mac-1やgp100MEL-14のような粘着タンパク質を巻き込みます.
- 中性粒子の活性化により,Mac-1の発現と活性が著しく増加します.
- gp100MEL-14は活性化後,中性粒子の表面から急速に排出されます.
研究 の 目的:
- 炎症中の中性粒子の機能におけるgp100MEL-14の分泌の役割を調査する.
- 中性粒子の活性化とエクストラバゼーション中のMac-1とgp100MEL-14の異なる調節を理解するために.
主な方法:
- 中性粒子の活性化測定は,化学作用因子とホルボールのエステルを用いて行われます.
- Mac-1とgp100MEL-14の発現と流出を測定する.
- 炎症組織におけるエクストラバゼートの中性粒子のgp100MEL-14の免疫ヒストキミカル分析.
主要な成果:
- 中性粒子の活性化により,gp100MEL-14が急速に分泌され,96kDaの断片が放出された.
- gp100MEL-14は,炎症組織に拡張した中性粒子の低下を抑制しました.
- 中性粒子の活性化後にマック-1発現と活性が上調された.
結論:
- 活性化時にgp100MEL-14の急速な流出は,重要な規制メカニズムです.
- この流出は,活性化された中性粒子が健康な内皮に結合し,損傷を与えることを防ぐ可能性があります.
- gp100MEL-14は,活性化されていない中性粒子の内皮への初期結合に役割を果たす可能性がある.
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