The visualization of Golgi glycosylation defects in patients' cells with Congenital Disorders of Glycosylation (CDG) is challenging and necessitates the use of cumbersome glycan analysis methods that are barely adapted to clinical research. We show here that metabolic labelling of patient cells with alkyne-tagged sialic-acid (SiaNAl) enables an easy and reliable readout assay for the detection of CDG occurrence. It also provides valuable clues regarding the pathological processes by assessing the distribution of sialic acid analogues within the cells.
先天性糖基化紊乱(CDG)患者细胞中高尔基糖基化缺陷的可视化具有挑战性,需要使用繁琐的糖基分析方法,而这些方法几乎不适用于临床研究。我们在此展示了用炔基标记的
唾液酸(SiaNAl)对患者细胞进行代谢标记,从而能够轻松可靠地检测CDG的发生。通过评估
唾液酸类似物在细胞内的分布,它还提供了有关病理过程的宝贵线索。