氧化结合蛋白调节了巨细胞中TLR诱导的细胞因子产生的解决
Alan H Diercks1, Irina S Podolskaia1, Tara A Murray1
1Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, WA 98109.
概括
氧化结合蛋白 (Osbp) 通过感知脂质变化来调节巨细胞的炎症反应. 调节Osbp影响托尔类受体 (TLR) 信号,影响细胞因子的产生和炎症的分辨率.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 脂质代谢 脂质代谢是什么
背景情况:
- 收费类受体 (TLRs) 调解感染的炎症反应,但大小和持续时间的调节机制尚不清楚.
- 虽然TLR信号与脂质代谢相互作用,但对巨细胞中的特定分子联系的了解很少.
- 氧化结合蛋白 (Osbp) 参与脂质感应和运输,但其在TLR反应中的作用尚不确定.
研究的目的:
- 研究氧化结合蛋白 (Osbp) 在调节巨细胞中托尔类受体 (TLR) 信号传递中的作用.
- 为了确定Osbp如何调节TLR激活期间的炎症反应和脂质代谢.
- 确定将Osbp功能与TLR诱导的细胞因子产生联系起来的分子机制.
主要方法:
- 利用体外和体内模型来研究TLR4诱导的细胞因子产生.
- 采用CRISPR诱导的Osbp敲击,以评估其在TLR反应中的必要性.
- 进行了脂质组分析,并使用Dgat1抑制剂来研究甘油三生产的作用.
主要成果:
- 用25-胆固醇 (25HC) 改变Osbp或在药理上持续和放大Tlr4诱导的细胞因子产生.
- 由CRISPR诱导的Osbp敲击取消了连接体维持TLR反应的能力.
- 脂质组分析表明,Osbp通过甘油三生产影响TLR信号,而甘油三通过Dgat1抑制剂被阻断.
结论:
- Osbp充当一种固醇传感器,调节巨细胞的炎症反应.
- Osbp将脂质代谢,特别是甘油三生产与炎症的解决联系起来.
- 针对Osbp可能提供一种策略,以控制由TLR信号介导的炎症反应.
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