赛科沙尼甲促进中性粒细胞外细胞陷的形成和杀菌活性
Lanqiu Zhang1, Zhengwei Hu2, Lei Yang1
1Tianjin Nankai Hospital, Tianjin Medical University, Tianjin, China.
Natural product research
|April 18, 2024
概括
来自Radix bupleuri的saicoside A (SSa) 迅速诱导中性粒细胞外细胞陷 (NET) 的形成,增强杀死细菌而不会导致细胞死亡. 这种天然化合物通过NOX独立途径增强先天免疫力.
科学领域:
- 免疫学 免疫学 免疫学
- 自然产品 化学 化学
- 药理学 药理学是指药理学的学科.
背景情况:
- 中性细胞外细胞陷 (NETs) 是重要的先天免疫组件.
- 拉迪克斯 (Radix bupleuri) 是一种具有潜在免疫调节功能的传统草药.
- 赛可沙宁A (SSa) 是Radix bupleuri.中的主要活性沙宁.
研究的目的:
- 调查SSa对NET形成的影响.
- 阐明SAS诱导的NETosis的潜在分子机制.
- 评估SSa对中性粒细胞杀菌活性的影响.
主要方法:
- 赛托克斯绿色染色和免疫光测定用于NET检测.
- 药物抑制剂针对信号通路 (ERK,PI3K/AKT,NOX) 和PAD4.4的药物抑制剂.
- 流细胞计和CCK-8测试以评估中性粒细胞活力和杀菌活性.
主要成果:
- SSa迅速诱导了NET的形成.
- SSa诱导的NETosis依赖于NADPH氧化酶 (NOX) 独立的活性氧物种 (ROS) 生产和自.
- 需要ERK和PI3K/AKT信号通路,但不需要PAD4.
- SSa增强了中性粒细胞的杀菌活性,主要是通过NET形成.
- 在没有显著的中性粒细胞死亡的情况下,发生了SSa诱导的NET形成.
结论:
- 通过涉及ROS和自的NOX独立途径,SSa有效地诱导NET的形成.
- 通过通过NETosis促进中性粒细胞杀菌活性,SSa增强了先天免疫防御.
- 在不诱导细胞毒性的情况下,SAS代表了一种潜在的天然治疗剂,可以增强对病原体的免疫反应.
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