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来自Brucea javanica种子中的抗补充多糖体BP-S1的表征

Xiao He¹, Ting Tan¹, Shilin Yang^1,2

¹Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, P. R. China.

Natural product research

|January 8, 2024

概括

来自Brucea javanica种子的新型多糖体BP-S1有效地抑制了补充通路. 这种化合物选择性地与补充成分C3和C4相互作用,提供潜在的治疗应用.

科学领域:

生物化学生物化学
免疫学免疫学免疫学
自然产品化学自然产品化学

背景情况:

补体系统对于先天性和适应性免疫是至关重要的.
来自自然来源的多糖化合物正在研究其免疫调节性质.

研究的目的:

从Brucea javanica种子中分离和鉴定一种生物活性多糖体 (BP-S1).
评估BP-S1对补充系统的免疫调节作用.

主要方法:

使用生物活性引导的净化方法来分离BP-S1.
结构特征包括分子量确定,单糖组成分析,甲基化和2D-NMR.
进行了补充抑制测定 (经典和替代途径) 和补充成分耗尽研究.

主要成果:

BP-S1是一种均的多糖 (45.7 kDa),由阿拉比诺斯和葡萄糖 (1:1比) 组成.
它的结构具有一个 →3,4) -α-Glup-(1→ 的脊柱,与 α-Arap 分支,形成一个周期性的绳状结构.
BP-S1显著抑制了经典的 (CH50:0.073 mg/mL) 和替代的 (AP50:0.097 mg/mL) 补充路径.
机制研究揭示了BP-S1与补充成分C3和C4.4的选择性相互作用.

结论:

BP-S1是一种结构定义的多糖,具有强大的补充抑制活性.
它的抑制机制涉及与C3和C4的直接相互作用,调节补充级联.
BP-S1代表了针对补充介导炎症性疾病的治疗开发的有希望的候选人.

关键词:

布鲁西亚·雅瓦尼卡 (Brucea javanica) 是一个这是一种反补充,反补充.聚糖是一种多糖.

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