アトラル酸は,NRF2経路の活性化によりフェロプトーシスを抑制することで,慢性的な間欠性低酸素誘発性肺損傷を弱める
Jingjing Chen1, Lu Zhou2, Mengxin Li1
1Jiangsu Marine Pharmaceutical Resources Development Engineering Research Center, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China.
Toxicology and applied pharmacology
|September 2, 2025
まとめ
アトラリック酸 (AA) は慢性断続性低酸素 (CIH) に起因する肺損傷から保護します. AAはNrf2経路を活性化することで炎症と酸化ストレスを軽減し,阻害性睡眠呼吸不全症候群 (OSAHS) のような状態の治療の可能性を提供します.
科学分野:
- 肺医学
- 薬理学について
- 細胞生物学
背景:
- 慢性断続性低酸素症 (CIH) は,阻害性睡眠無呼吸症候群 (OSAHS) の特徴であり,酸化ストレスによる肺損傷を引き起こす.
- アトラル酸 (AA) は,リケーン由来化合物で,抗炎症および抗酸化作用があることが知られている.
研究 の 目的:
- 慢性断続性低酸素症 (CIH) による肺損傷に対するアトラリック酸 (AA) の保護効果と基礎的メカニズムを調査する.
- 肺組織における酸化ストレス,炎症,フェロプトーシス経路の調節におけるAAの役割を調査する.
主な方法:
- MLE-12細胞を用いたCIHマウスモデルとin vitro低酸素/低酸素化モデルを確立する.
- H&E染色,生化学分析,qPCR,タンパク質ブラッティング,免疫光,フローサイトメトリーを用いた肺損傷の評価.
- Nrf2シグナル伝達経路とSLC7A11,GPX4,PTGS2のような主要なタンパク質を含む分子機構の調査.
主要な成果:
- AA前治療は,CIHマウスにおける病的な肺損傷,肺腫,酸化ストレスマーカー (ROS,MDA) を有意に減少させた.
- AA治療は抗酸化能力を高め,炎症因子の発現を減少させた.
- 機械的に,AAはNrf2経路を活性化し,SLC7A11とGPX4をアップレギュレーションし,PTGS2をダウンレギュレーションし,Nrf2阻害剤ML385によって阻害された.
結論:
- アトラリック酸 (AA) は慢性断続性低酸素 (CIH) による肺損傷に対する重要な保護効果を示しています.
- AAはNrf2信号経路を活性化し,それによって酸化ストレス,炎症,フェロプトーシスを軽減します.
- AAは,OSAHSを含むCIHに関連する肺疾患の治療に有望な治療候補である.
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