一个远程二级绑定口袋促进DC-SIGN的异质多价值准
Robert Wawrzinek1, Eike-Christian Wamhoff1,2, Jonathan Lefebre1,2
1Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, 14424 Potsdam, Germany.
Journal of the American Chemical Society
|November 8, 2021
概括
研究人员使用专门设计的脂质体发现了一种针对特定树突细胞 (DCs) 的新方法. 这种方法通过利用DC-SIGN上的二次结合口袋来增强免疫反应,这是DC的关键受体.
科学领域:
- 免疫学
- 葡萄糖科学
- 生物技术
背景情况:
- 树突细胞 (DCs) 是关键的抗原呈现细胞,可以弥合先天性和适应性免疫.
- 像DC-SIGN和Langerin这样的C型莱克受体表达在特定的DC子集上,是治疗的目标.
- 针对这些受体提供了下一代免疫疗法和抗感染药物的潜力.
研究的目的:
- 研究具有芳香糖和天然糖连体的异质多元脂质体的合作作用.
- 探索DC-SIGN和C型莱克受体 (CLR) 的全质激活潜力.
- 在治疗应用中提高向树突细胞的特异性.
主要方法:
- 使用异质多元脂质体,与芳香糖和天然糖配合呈现曼诺.
- 使用NMR光谱,分子对接和分子动力学模拟进行机械研究.
- 在DC-SIGN+和Langerin+细胞系上测试了向特异性.
主要成果:
- 在DC-SIGN+细胞,但不是Langerin+细胞上观察到显著的合作性效应.
- 确定了二次结合口袋,远离DC-SIGN的主要碳水化合物结合部位.
- 提供了由甘氨酸激素激活甘氨酸的初步证据,有助于DC-SIGN特异性向.
结论:
- 通过二次结合口袋,可以利用异多价值的DC向来增强激活性和特异性.
- 芳香酸甘氨酸可以以基方式激活DC-SIGN的甘氨酸识别,使其能够针对特定的细胞.
- 这些发现对转化糖科学和向免疫疗法和抗感染药物的开发有意义.
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