Siglec Ligands.

Siglec Ligands.
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DOI:
10.3390/cells10051260
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发表时间:
2021-05-20
期刊:
影响因子:
6
通讯作者:
Schnaar RL
Schnaar RL
中科院分区:
生物学2区
文献类型:
--
作者:
Gonzalez-Gil A;Schnaar RL

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糖蛋白和糖脂上密集而多样的聚糖阵列装饰所有细胞表面。在脊椎动物中,这些糖中的许多在各种键和聚糖环境中携带唾液酸作为其最外层糖部分。在其功能中,聚糖与互补聚糖结合蛋白(凝集素)结合以调节细胞生理学。在聚糖结合蛋白中有Siglecs,唾液酸结合免疫球蛋白样凝集素。在人类中,有14种Siglecs,其中大多数在免疫系统细胞的重叠子集上表达。每个Siglec都与不同的内源性唾液酸化聚糖结合,启动信号传导程序并调节细胞反应。在这里,我们探讨了Siglec配体的新兴科学,包括内源性唾液酸糖蛋白和糖脂以及合成的模拟唾液酸。这一领域的知识有望揭示控制细胞生理学的新分子途径和治疗干预的新机会。
A dense and diverse array of glycans on glycoproteins and glycolipids decorate all cell surfaces. In vertebrates, many of these carry sialic acid, in a variety of linkages and glycan contexts, as their outermost sugar moiety. Among their functions, glycans engage complementary glycan binding proteins (lectins) to regulate cell physiology. Among the glycan binding proteins are the Siglecs, sialic acid binding immunoglobulin-like lectins. In humans, there are 14 Siglecs, most of which are expressed on overlapping subsets of immune system cells. Each Siglec engages distinct, endogenous sialylated glycans that initiate signaling programs and regulate cellular responses. Here, we explore the emerging science of Siglec ligands, including endogenous sialoglycoproteins and glycolipids and synthetic sialomimetics. Knowledge in this field promises to reveal new molecular pathways controlling cell physiology and new opportunities for therapeutic intervention.
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