对C型莱克DC-SIGN的共价激活
Jonathan Lefèbre1,2,3, Maurice Besch1,2,3, Noémi Csorba4,5,6
1Department of Pharmaceutical Sciences, University of Vienna, Josef-Holaubek-Platz 2, Vienna, 1090, Austria.
Angewandte Chemie (International ed. in English)
|November 25, 2025
概括
研究人员开发了新的共价化合物来调节DC-SIGN功能,这是一个关键的免疫受体. 这些激活剂增强了连接体的结合,并为C型莱克调节提供了新的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 结构生物学 结构生物学
- 药用化学 医学化学
背景情况:
- 树突细胞特异性细胞间粘附分子-3-grabbing non-integrin (DC-SIGN) 是抗原呈现细胞上的C型乳素受体,对病原体识别和免疫反应至关重要.
- DC-SIGN独特的,浅层的碳水化合物结合部位对开发有效的基于连接体的疗法提出了挑战.
- 调节DC-SIGN功能是免疫系统疗法的一个有希望的途径.
研究的目的:
- 探索DC-SIGN的共价修改作为调节其功能的策略.
- 通过基于片段的选来识别DC-SIGN的强有力的激活剂.
- 阐明由新型共价化合物激活DC-SIGN的基础结构机制.
主要方法:
- 针对DC-SIGN对氨酸向的电友片段库的选.
- 对角函数测试用于识别DC-SIGN激活器.
- 使用NMR光谱,质谱和计算建模进行结构分析.
主要成果:
- 从碎片库中确定了两个强大的DC-SIGN激活器.
- 这两种化合物都增强了DC-SIGN对单糖联体的亲和力.
- 显而易见的激活机制被揭示出来:一种是诱导的寡合化,另一种是结合部位内的化改性氨酸K373.
结论:
- 素向的共价化合物代表了调节DC-SIGN功能的新有效策略.
- 这些发现对开发针对DC-SIGN和其他C型讲蛋白的治疗药物有影响.
- 这些已识别的化合物为进一步研究C型莱克受体生物学提供了有价值的工具.
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