在Raw264.7巨细胞中,Citri Reticulatae Pericarpium通过激活RasGRP3来限制TLR-4触发的炎症反应
Ji Hye Lee1, Yon-Suk Kim2, Kang Hyun Leem3
1School of Korean Medicine, Pusan National University, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 46241, Republic of Korea.
International journal of molecular sciences
|September 28, 2023
概括
树网状 (Citri Reticulatae Pericarpium) 提取物 (CRE) 通过激活Ras关氨酸核酸释放蛋白3 (RasGRP3) 来缓解低强度炎症. 在巨细胞中,CRE降低了关键的炎症性细胞因子IL-6的产生,这提供了一个潜在的治疗方法.
科学领域:
- 免疫学 免疫学 免疫学
- 药理学 药理学是指药理学的学科.
- 韩国传统医学 韩国传统医学
背景情况:
- 过度的炎症会导致组织损伤和细胞因子风暴.
- 拉斯瓜核酸释放蛋白3 (RasGRP3) 调节了托尔类受体 (TLR) 介导的免疫反应.
- 在低强度炎症期间,RasGRP3负面控制了促炎性细胞因子的产生,特别是IL-6.
研究的目的:
- 为了研究Citri Reticulatae Pericarpium提取物 (CRE) 的免疫调节作用.
- 为了确定CRE对巨细胞RasGRP3表达的影响.
- 探索CRE在控制炎症反应方面的潜力.
主要方法:
- 使用了Raw264.7巨细胞系.
- 用不同度的脂多糖 (LPS) 诱导炎症.
- 评估IL-6的产生和RasGRP3蛋白水平.
- 使用RasGRP3 siRNA来研究RasGRP3.3的作用.
- 分析了nobiletin的作用,nobiletin是CRE的一个关键成分.
主要成果:
- 在低LPS (1 ng/mL) 条件下,CRE显著降低了IL-6的产生,但在高LPS (100 ng/mL) 条件下却没有.
- CRE对IL-6的抑制作用依赖于RasGRP3,因为RasGRP3siRNA取消了这种作用.
- CRE治疗增加了RasGRP3蛋白水平,这些水平因高LPS而降低.
- 在低LPS条件下,CRE的主要成分诺比素也抑制了IL-6的产生.
结论:
- 通过减轻炎症反应,CRE显示出免疫调节活性.
- 该机制涉及RasGRP3表达的激活.
- 在低强度炎症条件下,CRE显示出治疗干预的潜力.
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