Protein glycosylation is one of the major post-translational modifications that can significantly impact protein folding, distribution, stability, conformation, and activity. Glycoprotein abundance, glycosylation degree, and glycan structure changes are closely related to many diseases (such as genetic diseases, immunodeficiency, cardiovascular diseases, and cancer). The research on glycoproteomics has become popular, increasing the demand for the development of quantitative glycomics strategies. These strategies need to be able to sensitively monitor the abundance and structural changes of glycans. The role and characteristics of glycans in biological systems can be clarified using these strategies.
In the past, people focused their research on the enrichment and separation of glycoproteins/glycopeptides, identification of glycosylation sites, and glycan structure analysis. So far, the development of quantitative glycomics has lagged slightly behind other studies. At present, a combination of multiple analytical techniques (such as capillary electrophoresis, liquid chromatography, and mass spectrometry) is mainly used to analyze glycoprotein quantitatively. To enhance the sensitivity in spectroscopy and mass spectrometry, it is necessary to label with ionic and/or hydrophobic reagents during the analysis. Labeling with stable isotope reagents has also been considered a feasible strategy to achieve relative quantification.
Fig.1 Quantitative proteomic schematic of serum glycoproteins. (Gao, 2015)
CD BioGlyco provides a variety of technology platforms for quantitative analysis of glycoproteins, mainly including fluorescence spectroscopy, capillary electrophoresis, laser-induced fluorescence detection, hydrophilic interaction chromatography with fluorophores, and mass spectrometry. Our researchers provide the best experiment design according to our customer's research needs. We provide the following quantitative analyses.
We provide relative quantification of glycoproteins through strategies that combine isotope labeling/isotope-free labeling with a variety of advanced mass spectrometry techniques.
CD BioGlyco is a company with rich experience and a good reputation in the field of glycoproteomics. Our multi-platform methods and well-trained researchers will greatly accelerate our clients’ research and help them explore glycobiology more comprehensively and accurately. If you are interested in our services, please contact us for more consultation and we will respond promptly.