转录抑制动脉动脉性炎症:通过PPARdelta进行调制
Chih-Hao Lee1, Ajay Chawla, Ned Urbiztondo
1Howard Hughes Medical Institute, Gene Expression Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA.
概括
氧酶增殖器激活受体 (PPAR) 德尔塔,而不是玛,控制泡细胞中的炎症. 在泡细胞中删除PPARdelta显著减少了动脉样硬化病变区域,这表明它是治疗点.
科学领域:
- 心血管生物学心血管生物学
- 动脉样硬化的分子机制
- 炎症和免疫的作用
背景情况:
- 动脉样硬化病变的形成包括含脂质的巨细胞 (泡细胞) 和慢性炎症.
- 氧酶增殖器激活受体 (PPAR) 马会影响泡细胞中的脂质代谢.
- 相关的PPARdelta受体在巨细胞炎症中的作用尚不清楚.
研究的目的:
- 研究PPARdelta在调节动脉样硬化病变内的巨细胞炎症状态中的作用.
- 为了确定PPARdelta是否影响动脉样硬化病变的进展.
主要方法:
- 利用了PPARdelta的基因删除,特别是在泡细胞中.
- 评估了PPARdelta删除对炎症标志物和动脉样硬化病变大小的影响.
- 研究了涉及PPARdelta.的转录调节机制.
主要成果:
- 在泡细胞中删除PPARdelta导致动脉样硬化病变区域显著减少 (超过50%).
- PPARdelta删除增加了巨细胞内炎症抑制剂的可用性.
- 确定了一条依赖于连接体的转录通路,其中PPARdelta通过与转录抑制剂的相互作用来调节炎症.
结论:
- PPARdelta,而不是PPAR gamma,在控制动脉样硬化的巨细胞炎症状态方面发挥着至关重要的作用.
- 向PPARdelta及其配体可能提供一种新的治疗策略,以减少炎症并减缓动脉样硬化的进展.
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