来自Uncaria rhynchophylla根的两种多糖类:结构特征,免疫增强活性和结构活性关系分析
Zhongnan Wu1, Cancan Wang2, Tanggan Wang1
1Provincial Key Laboratory of Natural Drugs Research and Development, The Affiliated Dongguan Songshan Lake Central Hospital, School of Pharmacy, Guangdong Medical University, Dongguan, 523808, China.
International journal of biological macromolecules
|November 30, 2025
概括
来自Uncaria rhynchophylla根的两个多糖体,URP90-1和URP90-3,表现出显著的免疫增强活性. URP90-1 显示出优异的免疫强度,这可能是由于其较高的葡萄糖和特定的葡萄糖结合物含量,激活了TLR4通路.
科学领域:
- 植物化学和药理学
- 免疫学 免疫学 免疫学
- 结构生物学 结构生物学
背景情况:
- Uncaria rhynchophylla以其多样化的化学化合物和药理学效应而闻名.
- 然而,其多糖的结构特征和生物活性以前没有被研究过.
研究的目的:
- 为了阐明从Uncaria rhynchophylla根中分离出来的两个多糖体URP90-1和URP90-3的结构特征.
- 评估它们的免疫增强活动,并探索潜在的机制.
主要方法:
- 使用先进技术进行多糖化合物结构分析.
- 基于细胞的体外测试和体内斑马鱼模型以评估免疫调节效应.
- 生物层干扰测量 (BLI) 来确认受体结合.
主要成果:
- URP90-1和URP90-3的特点是不同的结构组成,包括独特的骨干和侧链残留物.
- 这两种多糖都通过激活托尔类受体4 (TLR4) /MyD88/NF-κB信号通路来表现出免疫强度.
- 与URP90-3相比,URP90-1表现出更高的与TLR4的结合亲和力和更高的免疫调节活性.
结论:
- URP90-1和URP90-3具有显著的免疫增强特性.
- URP90-1的增强活性归因于其较高的葡萄糖含量和特定的葡萄糖结.
- 这些多糖,特别是URP90-1,代表了开发新型免疫增强剂的有希望的候选人.
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