BAFF依存のPKCデルタ媒介核信号によるB細胞生存の調節
Ingrid Mecklenbräuker1, Susan L Kalled, Michael Leitges
1Laboratory of Lymphocyte Signaling, The Rockefeller University, New York, New York 10021, USA.
Nature
|September 14, 2004
まとめ
科学者たちは,身体がB細胞の生存を制御する新しい方法を発見しました. タンパク質キナーゼCdelta (PKCdelta) は通常,B細胞死を誘発しますが,BAFFはこれを防止し,潜在的に自己免疫疾患に影響を与えます.
科学分野:
- 免疫学 免疫学とは
- 細胞生物学 細胞生物学
- 分子生物学は分子生物学である.
背景:
- 自己反応性B細胞は,自己免疫疾患のリスクを伴います.
- 辺縁B細胞の生存を制御するメカニズムは,自己免疫を予防するために不可欠です.
研究 の 目的:
- 周辺B細胞生存を調節するセリン/スレオニンタンパク質キナーゼCdelta (PKCdelta) の役割を調査する.
- B細胞生存に関与するシグナル伝達経路を特定し,BAFFによってその調節を行う.
主な方法:
- 静止状態のB細胞およびBAFFで処理されたB細胞におけるPKCdeltaの核局所化の分析.
- セリン14 (S14-H2B) でヒストンH2Bのリン酸化の評価.
- PKCdeltaの核蓄積に対するBAFFの影響に関する調査.
主要な成果:
- PKCdeltaの核の局所化は,休息しているB細胞の自発的な死を調節する.
- PKCデルタ媒介によるS14-H2Bのリン酸化はB細胞死亡の調節に関与しています.
- BAFF処理は,PKCdeltaの核蓄積をB細胞に防止する.
結論:
- 新しいBAFF誘発のPKCデルタ媒介の核信号伝達経路は,周辺B細胞の生存を調節する.
- この経路は,B細胞の生存を調節することによって,自己免疫疾患に対する潜在的な治療標的を提供します.
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