カスパースシグナリングはマイクログリアの活性化と神経毒性を制御する
Miguel A Burguillos1, Tomas Deierborg, Edel Kavanagh
1Department of Oncology-Pathology, Cancer Centrum Karolinska, Karolinska Institutet, 171 76, Stockholm, Sweden.
Nature
|March 11, 2011
まとめ
この研究は,特定のカスパスが,パーキンソン病やアルツハイマー病などの神経変性疾患の重要な要因であるマイクログリアの活性化を調節することを明らかにしています. これらのカスパスを阻害すると,炎症細胞を標的として神経保護を提供することができる.
科学分野:
- 神経科学は神経科学である.
- 細胞生物学 細胞生物学
- 免疫学 免疫学とは
背景:
- マイクログリアの活性化と炎症は,神経変性疾患の病原性に関与しています.
- 活性化されたマイクログリアは,神経毒性プロ炎症因子を放出します.
研究 の 目的:
- マイクログリアの活性化と神経毒性の調節におけるカスパスの役割を調査する.
- 神経保護戦略としてのカスパース抑制の可能性を調査する.
主な方法:
- 炎症因子で刺激されたマイクログリアにおけるカスパース-8およびカスパース-3/7の活性化をインビトロおよびインビボで研究した.
- カスパスのノックダウンと化学的阻害を活用した.
- パーキンソン病とアルツハイマー病の患者の脳サンプルから採取したマイクログリアのカスパース活性化を調べた.
主要な成果:
- カスパース-8とカスパース-3/7の秩序ある活性化は,タンパク質キナーゼC-δ依存経路を通じてマイクログリアの活性化を調節する.
- カスパースの活性化は,細胞死を誘導することなく発生した.
- カスパスの抑制により,マイクログリアの活性化と神経毒性が低下しました.
- パーキンソン病とアルツハイマー病の脳からのマイクログリアでカスパース活性化の上昇が観察されました.
結論:
- カスパース-8とカスパース-3/7は,マイクログリア活性化の主要な調節体です.
- カスパース抑制を介してマイクログリアをターゲットにすることは,神経変性疾患の潜在的神経保護療法アプローチを示しています.
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