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基于多组分反应的小分子二糖和三糖糖模拟物作为探测凝集素特异性的工具。

Multicomponent reaction derived small di- and tri-carbohydrate-based glycomimetics as tools for probing lectin specificity.

机构信息

Division of Organic Chemistry and Biochemistry, Rudjer Bošković Institute, Bijenička c. 54, Zagreb, 10000, Croatia.

Department of Chemistry and Biochemistry, Florida Atlantic University, 777 Glades Rd., Boca Raton, FL, 33431, USA.

出版信息

Glycoconj J. 2022 Oct;39(5):587-597. doi: 10.1007/s10719-022-10079-3. Epub 2022 Aug 24.

Abstract

Lectins, carbohydrate-binding proteins, play important functions in all forms of life from bacteria and viruses to plants, animals, and humans, participating in cell-cell communication and pathogen binding. In an attempt to modify lectin functions, artificial lectin ligands were made usually as big dendrimeric or cluster multivalent glycomimetic structures. Here we synthesized a novel set of glycomimetic ligands through protection/deprotection multicomponent reactions (MCR) approach. Multivalent di-and tri-carbohydrate glycomimetics containing D-fructose, D-galactose, and D-allose moieties were prepared in 63-96% yield. MCR glycomimetics demonstrated different binding abilities for plant lectins Con A and UEA I, and human galectin-3. Information gained about the influence of molecule structure, multivalency and optical purity on the lectin binding ability can be used in lectin detection and sensitivity measurements to further facilitate understanding of carbohydrate recognition process.

摘要

凝集素是一类能够识别糖蛋白和糖脂的糖结合蛋白,在从细菌和病毒到植物、动物和人类的所有生命形式中都发挥着重要作用,参与细胞间的通讯和病原体的结合。为了修饰凝集素的功能,人们通常会合成人工凝集素配体,这些配体通常是具有树枝状或多价糖模拟结构的大分子。在这里,我们通过保护/脱保护多组分反应(MCR)方法合成了一组新型糖模拟配体。通过 MCR 方法制备了包含 D-果糖、D-半乳糖和 D-阿洛糖部分的二价和三价双糖和三糖糖模拟物,产率为 63-96%。MCR 糖模拟物对植物凝集素 Con A 和 UEA I 以及人半乳糖凝集素-3 表现出不同的结合能力。关于分子结构、多价性和光学纯度对凝集素结合能力影响的信息可用于凝集素检测和灵敏度测量,以进一步促进对碳水化合物识别过程的理解。

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