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Journal Articles (Review Article) Biochimica et Biophysica Acta (BBA) - General Subjects Year : 2020

CDG biochemical screening: Where do we stand?

Abstract

Background: Glycosylation is one of the most complex post-translational modifications of proteins and lipids, notably requiring many glycosyltransferases, glycosidases and sugar transporters encoded by about 1-2% of all human genes. Deleterious variants in any of them may result in improper protein or lipid glycosylation, thus yielding the so-called 'congenital disorders of glycosylation' or CDG. Scope of review: We first review the current state of knowledge on the common blood and cellular glycoproteins used in the biochemical screening of CDG, as well as the emerging ones for an improved diagnosis. We then provide an overview of the current state-of-the-art methodologies ranging from gel electrophoresis to mass spectrometry to measure improper glycosylation. Finally, we discuss how additional tools such as metabolomics and microfluidics can be added to the current toolbox to better diagnose and delineate CDG. Major Conclusions: Combining several biochemical indicators and related methods is often required to cope with the large clinical heterogeneity of CDG and establish a definitive diagnosis. General significance: This review aims to critically present current available CDG biochemical biomarkers and dedicated methods in the context of highly diverse glycosylation pathways and related inherited diseases.
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Dates and versions

hal-03320709 , version 1 (18-04-2024)

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Arnaud Bruneel, Sophie Cholet, Thuy Tran-Maignan, Thanh Duc Mai, François Fenaille. CDG biochemical screening: Where do we stand?. Biochimica et Biophysica Acta (BBA) - General Subjects, 2020, 1864 (10), pp.129652. ⟨10.1016/j.bbagen.2020.129652⟩. ⟨hal-03320709⟩
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