来自Codonopsis pilosula的一种高度分支的阿拉伯银河:结构洞察力和造血细胞保护机制
Yue Zhu1, Xiao Li2, Sinan Wang1
1College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China; Innovation Institute for Artificial Intelligence in Medicine, Zhejiang University, Hangzhou, 310018, China; State Key Laboratory of Chinese Medicine Modernization, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China.
International journal of biological macromolecules
|September 25, 2025
概括
科多诺普西斯 (Codonopsis pilosula arabinogalactan) CP2A是一种超高分子量多糖体,可以防止造血损伤. 它通过抑制P53通路而起作用,为治疗血液疾病提供了潜力.
科学领域:
- 生物化学 生物化学
- 药理学 药理学 是一个学科.
- 结构生物学 结构生物学
背景情况:
- 来自Codonopsis pilosula的多糖体显示出治疗的希望,但它们的造血效应缺乏结构和机制的理解.
- 这些多糖的造血活性在很大程度上未被探索,需要详细的研究.
研究的目的:
- 为了阐明来自Codonopsis pilosula的血液生成活性多糖体的结构.
- 调查其造血保护作用背后的机制.
- 为了确定CP2A作为潜在的治疗药物用于造血性疾病.
主要方法:
- 综合工作流:多糖的分析,生物活性导向的分离,结构分析 (GC-MS,NMR,HILIC-MS/MS) 和机械验证.
- 用TPEN诱导的斑马鱼模型来评估造血保护.
- 单糖,链接和定量13C NMR分析用于结构确定.
主要成果:
- 鉴定了CP2A,一种同质的,超高分子量 (1.29 × 10^7 Da) 的阿拉比诺,其银河糖与阿拉比诺的比率为60.76:39.24.
- 确定了CP2A的独特结构:一个 →4) -β-Galp-(1→3,6) -β-Galp-(1→的骨干与复杂的阿拉比诺斯侧链,表明蛋白质结合.
- CP2A通过抑制TPEN诱导的P53通路过活化,包括P21介导的细胞循环停止,在斑马鱼中显示出显著的造血保护.
结论:
- CP2A是一种结构独特的,高度分支的阿拉比诺 Galactan,具有强大的造血-保护性活性.
- 它的机制包括抑制P53通路,减轻TPEN引起的损害.
- CP2A在治疗造血性疾病方面具有显著的治疗潜力.
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