FAHFAを含むトライアキルグリセロールの発見とその代謝の調節
Dan Tan1, Meric Erikci Ertunc1, Srihari Konduri2
1Clayton Foundation Laboratories for Peptide Biology , Salk Institute for Biological Studies , 10010 North Torrey Pines Road , La Jolla , California 92037-1002 , United States.
Journal of the American Chemical Society
|May 7, 2019
まとめ
脂肪酸ヒドロキシ脂肪酸 (FAHFA) は,新しい脂質クラスであるFAHFA-トリアキルグリセロール (FAHFA-TG) に保存されます. FAHFA-TG分解は細胞のFAHFAレベルを調節し,代謝および炎症性疾患に対する新しい治療標的を提供します.
科学分野:
- 脂質代謝
- 生物化学
- 分子生物学
背景:
- 脂肪酸ヒドロキシ脂肪酸 (FAHFA) は,糖尿病および炎症性疾患の治療の可能性のある生物活性脂質です.
- FAHFAの代謝を理解することは,診断と治療戦略の開発に不可欠です.
- 細胞のFAHFA代謝に関する現在の知識は限られている.
研究 の 目的:
- 細胞内のFAHFAの代謝運命を調査する.
- FAHFAを含む新しい脂質の分類を特定する.
- これらの新種の脂質が細胞のFAHFAレベルを調節する役割を明らかにする.
主な方法:
- 分化脂肪細胞で利用された同位体ラベル付FAHFA.
- 他の脂質クラスへのFAHFAの組み込みを調査した.
- トライアキルグリセロルのFAHFA定量化のための軽度のアルカリ水解法を開発した.
- 分析されたFAHFA-トリアキルグリセロール (FAHFA-TG) 濃度および地域同位体分布.
主要な成果:
- 固有の脂質の新種が特定されました.FAHFA含有トリアシルグリセロール (FAHFA-TGs).
- 脂肪細胞のFAHFA-TGに同位体ラベルを付けたFAHFAが組み込まれていることが実証されています.
- 脂質分解誘導は,FAHFA-TG分解によって非エステリ化FAHFAレベルを増加させることが示された.
- 量化FAHFA-TGsはFAHFAの主要な貯蔵庫であり,非エステリ化FAHFAのレベルを100倍以上上回ります.
結論:
- FAHFA-TGは,FAHFAが細胞や組織に蓄積される重要な形態です.
- FAHFA-TG代謝は,細胞のFAHFAホメオスタシスを調節する新発見の経路です.
- この発見は 代謝の健康と 炎症の調節を理解するための 新たな道を開きます
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