通过内源性长链脂肪酸激活的过氧体增殖器激活受体α/δ/γ激活配置文件
Akihiro Honda1, Aoi Hosoda1, Waka Kamichatani1
1Department of Health Chemistry, Showa Pharmaceutical University, Machida, Tokyo 194-8543, Japan.
International journal of molecular sciences
|December 30, 2025
概括
这项研究比较了脂肪酸和15d-PGJ2如何激活过氧体增殖器激活受体 (PPARα/δ/γ). 棕酸和其他关键脂肪酸在相关度下激活PPAR,与合成激动剂不同.
科学领域:
- 分子内分泌学分子内分泌学
- 脂质代谢 脂质代谢是什么
- 核接收器信号传输 核接收器信号传输
背景情况:
- 过氧体增殖器激活受体 (PPARα/δ/γ) 是核受体,对代谢调节至关重要.
- 内源性脂肪酸 (FA) 是已知的配体,但比较激活配置文件很少.
- 合成的PPAR激动剂表现出不同的联合激活剂招募,与天然配体不同.
研究的目的:
- 通过对14种主要自由长链脂肪酸 (LCFA) 和15-脱氧-Δ12,14-前列腺素J2 (15d-PGJ2) 的PPARα/δ/γ激活进行比较分析.
- 为了研究PPAR亚型的联体度依赖性协活性剂 (PGC1α,CBP,SRC1,TRAP220) 招募.
- 为了比较天然FA配体与合成PPAR激动剂的联合激活剂偏好.
主要方法:
- 使用一种同活性剂招募试验来评估PPARα/δ/γ激活.
- 测试了15种潜在的配体,包括14种LCFA (C12:0-C22:6) 和15d-PGJ2.2.
- 研究了四种不同的联合激活的剂量依赖性招募.
主要成果:
- 所有15个FA在高度下都激活了PPARα/δ;在生理度下,棕酸,酸,油脂酸和烯酸酸都显示出显著的激活.
- 劳里克酸,米里斯酸,棕酸和15d-PGJ2在高度下激活了PPARγ;只有棕酸在生理度下显示出轻微的激活.
- 与合成PPAR激动剂 (例如,pemafibrate,seladelpar,pioglitazone) 相比,FA配体显示出不同的协同激活剂偏好.
结论:
- 像棕酸这样的特定LCFA是PPARα/δ和PPARγ的强有力的生理激活剂.
- 与合成 PPAR 激动剂相比,天然的 FA 配体表现出不同的同活性剂招募配置文件.
- 同激活剂招募的差异可能解释合成PPAR调节剂的不同治疗效果和潜在副作用.
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