Fasシグナル伝達経路: パラダイム以上のもの
1Institute of Cell Biology and Immunology, Allmandring 31, University of Stuttgart, 70 569 Stuttgart, Germany. harald.wajant@po.uni-stuttgart.de
Science (New York, N.Y.)
|June 1, 2002
まとめ
重要な細胞死プロセスであるアポトーシスは,内在的または外在的な経路によって開始されます. Fasのような死亡受容体によって活性化される外部経路は,非アポプトシス信号伝達においても重要な役割を果たします.
科学分野:
- 細胞生物学 細胞生物学
- 免疫学 免疫学とは
- 発達生物学 発達生物学とは
背景:
- アポプトーシスおよび関連する細胞死メカニズムは,発達,ホメオスタシス,腫瘍監視,免疫機能に不可欠です.
- アポトーシスは主に2つの異なる経路によって引き起こされます:内在的な (ミトコンドリア) 経路と外在的な (死受容体媒介) 経路です.
研究 の 目的:
- 外的アポトーシス経路の基本的メカニズムを紹介する.
- アポトーシスの開始における原型死亡受容体Fasの役割を強調する.
- 非アポプトティック信号伝導におけるFas受容体の機能に関する新興の理解について議論する.
主な方法:
- この見解は,アポトーシスの経路に関する既存の知識を統合しています.
- 外的経路の分子イベントに焦点を当てています.
- Fas受容体システムを説明のモデルとして利用する.
主要な成果:
- 外的経路は,死亡受容体の結合によって活性化されます.
- Fas受容体は,この経路の重要なイニシアターであり,アポトーシスにつながります.
- また,Fas受容体は,非アポプトティック信号のトランスデューサーとしても機能する.
結論:
- Fasによって例示される外部アポトーシス経路は,細胞の調節に不可欠です.
- ファス受容体のアポトーシスと非アポトーシスシグナル伝達における二重の役割は,ますます認識されています.
- これらの経路を理解することは,がん生物学から免疫学に至る分野にとって不可欠です.
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