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フェロプトーシス:非アポプトティックな細胞死の一種で,鉄に依存する
Scott J Dixon1, Kathryn M Lemberg, Michael R Lamprecht
1Department of Biological Sciences, Columbia University, 550 West 120th Street, Northwest Corner Building, MC 4846, New York, NY 10027, USA.
Cell
|May 29, 2012
まとめ
私たちはフェロプトーシスを発見し,アポプトーシスとは異なる新しい鉄に依存した細胞死経路を発見しました. フェロプトーシスの抑制は,がんや神経変性疾患に対する新しい治療戦略を提供することができる.
科学分野:
- バイオケミストリー バイオケミストリー
- 細胞生物学 細胞生物学
- 病理学 パトロジー
背景:
- 非アポプト性細胞死機構は,腫瘍細胞の除去と病理学的状態において極めて重要です.
- 腫瘍性RASシグナリングは,特定の細胞死経路を誘導することができます.
研究 の 目的:
- 小分子エラスティンによって誘発される非アポプトティック細胞死の新しい形態を特徴づける.
- この細胞死経路の根本的なメカニズムと潜在的な治療効果を調査する.
主な方法:
- 癌細胞の細胞死を誘発するためにエラスティンを利用しました.
- 細胞内鉄と抗酸化物質防御の役割を研究した.
- フェロスタチン-1をフェロプトーシス阻害剤として特定した.
- ネズミの脳断片でグルタミン酸誘発細胞死を調べた.
主要な成果:
- エラスティンは,フェロプトーシスと呼ばれる独特で鉄に依存する非アポプトティック細胞死を引き起こす.
- フェロプトーシスは形態学的に,生化学的に,遺伝的にアポプトーシス,ネクロシス,オートファギーとは異なる.
- フェロスタチン-1は,がん細胞におけるフェロプトーシスとグルタミン酸誘発の細胞死を効果的に抑制する.
- エラスティンとグルタミン酸は,システムx ((c)) ((-)) 経由でシスティンの吸収を阻害し,抗酸化防御を低下させ,酸化による死を引き起こす.
結論:
- フェロプトーシスは,特定の癌細胞の除去に不可欠な,独特な細胞死経路を表しています.
- フェロプトーシスの阻害は,神経変性に対する保護的メカニズムを提供する可能性があります.
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