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聚糖CPP-3a 通过TLR4/2-MyD88-NF-κB/p38 MAPK信号通路促进巨细胞的M1极化

Yihua Pi¹, Qingxia Yuan², Shaoting Qin¹

¹Guangxi Key Laboratory of Translational Medicine for Treating High-Incidence Infectious Diseases with Integrative Medicine, Guangxi University of Chinese Medicine, Nanning 530200, China.

|July 25, 2025

概括

克洛雷拉化糖多糖CPP-3a通过通过TLR4激活促进M1极化来增强巨细胞的免疫反应. 这种免疫调节剂显示出治疗炎症和传染病的潜力.

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.

背景情况:

来自自然来源的多糖的免疫调节潜力是一个活跃的研究领域.
黑藻 (Chlorella pyrenoidosa) 是一种因其营养和潜在的药用特性而闻名的微藻.

研究的目的:

研究来自Chlorella pyrenoidosa的多糖体CPP-3a对RAW264.7巨细胞的免疫调节作用.
阐明CPP-3a诱导的免疫反应的潜在分子机制.

主要方法:

RAW264.7巨细胞被用CPP-3a治疗.
测量了细胞容量,氧化产量和细胞因子水平 (TNF-α,IL-6).
分析了同刺激分子CD86的表达.
使用特定的抑制剂和TLR4淘汰细胞评估了通类受体 (TLR) 的参与.
通过Western blot和途径抑制剂研究了NF-κB和p38 MAPK信号通路.

主要成果:

CPP-3a显著增强了巨细胞和氧化的产生.
CPP-3a上调了促炎性细胞因子TNF-α和IL-6,以及共刺激分子CD86,诱导了M1极化.
确定TLR4是CPP-3a的主要受体,TLR2扮演了次要角色.
CPP-3a激活了依赖MyD88的NF-κB和p38 MAPK信号通路,这对于M1极化至关重要.

结论:

CPP-3a是一种强大的免疫调节剂,主要通过TLR4激活驱动M1巨细胞的两极分化.
这些发现表明,CPP-3a具有作为炎症和传染病辅助剂的显著潜力.

关键词:

克洛雷拉多糖是一种多糖化合物.在M1极化中,M1极化这就是NF-κBB.在 TLR4 中,巨细胞是一个巨细胞.

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