15-デオキシデルタ12,14-プロスタグランジンJ2は,脂肪細胞決定因子PPARガンマのリガンドである
B M Forman1, P Tontonoz, J Chen
1Salk Institute for Biological Studies, La Jolla, California 92037, USA.
Cell
|December 1, 1995
まとめ
研究者らは,15-デオキシ-デルタ12,14-プロスタグランジンJ2をアディポゲネシスの重要な調節体として特定し,PPARガンマリガンドと脂肪細胞発達の誘発体として作用した. この発見は,代謝健康のための重要な経路を強調しています.
科学分野:
- 分子内分泌学 分子内分泌学
- 細胞生物学 細胞生物学
- メタボリック・レギュレーション
背景:
- 脂肪細胞質量調節は,脊椎動物のホメオスタシスにとって不可欠である.
- フィブロブラストのアディポサイトへの変換は,ペロキシソーム増殖器活性化受容体ガンマ (PPARγ) 発現によって媒介されます.
- 固有のPPARγリガンドの存在は,アディポゲネシスの調節における役割を示唆しています.
研究 の 目的:
- PPAR応答要素を活性化する内生リガンドを特定する.
- これらのリガンドがアディポゲネシスにおける役割を調査する.
- 脂肪細胞発育とグルコースホメオスタシスにおけるPPARγを含むシグナル伝達経路を探求する.
主な方法:
- PPAR応答要素の活性化のためのアラキドナート代謝物のスクリーニング.
- 特定された化合物がアディポゲネシスを誘発する能力を評価する.
- シアゾリジンダイオン薬のPPARγへの結合を調査する.
主要な成果:
- 15-デオキシ-デルタ12,14-プロスタグランジンJ2は,PPARγリガンドであり,アディポゲネシスの誘発体として特定されました.
- シアゾリジンディオンの抗糖尿病薬もPPARγに結合し,脂肪細胞の発達を調節する.
- プロスタノイドとチアゾリジンダイオンは,共通のPPARγシグナル伝達経路を使用しています.
結論:
- PPARγとその内生リガンドは,脂肪細胞の発達とグルコースホメオスタシスにおいて重要な役割を果たします.
- PPARγシグナル伝達経路は,代謝障害への介入の重要な標的である.
- この研究は,代謝調節における根本的なメカニズムを明らかにしています.
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