(19)F NMR-Guided Design of Glycomimetic Langerin Ligands.

(19)F NMR-Guided Design of Glycomimetic Langerin Ligands.
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(19)F NMR 指导的糖模拟 Langerin 配体的设计

DOI:
10.1021/acschembio.6b00561
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发表时间:
2016
影响因子:
4
通讯作者:
Rademacher C
Rademacher C
中科院分区:
生物学2区
文献类型:
--
作者:
Wamhoff EC;Hanske J;Schnirch L;Aretz J;Grube M;Varon Silva D;Rademacher C

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C型凝集素受体(CLRs)在病原体防御和免疫稳态中起着关键作用。Langerin是一种主要在朗格汉斯细胞上表达的受体,是开发抗感染药物或免疫调节疗法的潜在靶受体。由于哺乳动物碳水化合物结合位点通常显示高溶剂暴露和亲水性,天然单糖配体的识别特征在于低亲和力。因此,糖模拟物配体的设计提出了挑战,延伸到合适的测定的发展。在这里,我们报告了19 F R2-过滤NMR的第一个应用,以解决这些挑战的一个NMR,即,朗格林均相单价测定对于评价2-脱氧-2-甲酰胺基-α-甘露糖苷类似物的计算机设计是必不可少的,并且能够针对碳水化合物结合位点实施片段筛选。通过鉴定有效的单糖类似物和片段命中,本研究代表了对糖模拟Langerin配体设计的重要进展,并强调了其他CLR检测开发的重要性。
C-type lectin receptors (CLRs) play a pivotal role in pathogen defense and immune homeostasis. Langerin, a CLR predominantly expressed on Langerhans cells, represents a potential target receptor for the development of anti-infectives or immunomodulatory therapies. As mammalian carbohydrate binding sites typically display high solvent exposure and hydrophilicity, the recognition of natural monosaccharide ligands is characterized by low affinities. Consequently, glycomimetic ligand design poses challenges that extend to the development of suitable assays. Here, we report the first application of19F R2-filtered NMR to address these challenges for a CLR, i.e., Langerin. The homogeneous, monovalent assay was essential to evaluating thein silicodesign of 2-deoxy-2-carboxamido-α-mannoside analogs and enabled the implementation of a fragment screening against the carbohydrate binding site. With the identification of both potent monosaccharide analogs and fragment hits, this study represents an important advancement toward the design of glycomimetic Langerin ligands and highlights the importance of assay development for other CLRs.
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