Laboratory of Medical and Functional Glycomics, Graduate School of Advanced Life Science, and Frontier Research Center for Post-Genome Science and Technology, Hokkaido University, Sapporo, 001-0021, Japan.
Glycoconj J. 2017 Dec;34(6):807-815. doi: 10.1007/s10719-017-9800-9. Epub 2017 Nov 18.
Most cells are coated by a dense glycocalyx composed of glycoconjugates such as glycosphingolipids, glycoproteins, and proteoglycans. The overall glycomic profile is believed to be crucial for the diverse roles of glycans, which are mediated by specific interactions that regulate cell-cell adhesion, the immune response, microbial pathogenesis, and other cellular events. Many cell surface markers were discovered and identified as glycoconjugates such as stage-specific embryonic antigen, Tra-1-60/81 and various other cell surface molecules (e.g., cluster of differentiation). Recent progress in the development of analytical methodologies and strategies has begun to clarify the cellular glycomics of various cells including human embryonic stem cells (hESCs) and human induced pluripotent stem cells (hiPSCs). The glycomic profiles of these cells are highly cell type-specific and reflect cellular alterations, such as development, differentiation and cancerous change. In this mini review, we briefly summarize the glycosylation spectra specific to hESCs and hiPSCs, which cover glycans of all major glycoconjugates (i.e., glycosphingolipids, N- and O-glycans of glycoproteins, and glycosaminoglycans) and free oligosaccharides.
大多数细胞都被一层密集的糖萼所覆盖,糖萼由糖缀合物组成,如糖脂、糖蛋白和糖胺聚糖。糖萼的整体糖组图谱被认为对糖的多种功能至关重要,这些功能通过特定的相互作用来介导,这些相互作用调节细胞-细胞黏附、免疫反应、微生物发病机制和其他细胞事件。许多细胞表面标志物被发现并鉴定为糖缀合物,如阶段特异性胚胎抗原、Tra-1-60/81 和各种其他细胞表面分子(例如分化群)。在分析方法和策略的发展方面的最新进展开始阐明包括人类胚胎干细胞(hESCs)和人类诱导多能干细胞(hiPSCs)在内的各种细胞的细胞糖组学。这些细胞的糖组图谱高度细胞类型特异性,并反映细胞的改变,如发育、分化和癌变。在这篇迷你综述中,我们简要总结了 hESCs 和 hiPSCs 的特定糖基化图谱,涵盖了所有主要糖缀合物(即糖脂、糖蛋白的 N-和 O-聚糖以及糖胺聚糖)和游离寡糖的聚糖。