Glycoproteins Enrichment and LC-MS/MS Glycoproteomics in Central Nervous System Applications

Methods in Molecular Biology
Rui ZhuYehia Mechref

Abstract

Proteins and glycoproteins play important biological roles in central nervous systems (CNS). Qualitative and quantitative evaluation of proteins and glycoproteins expression in CNS is critical to reveal the inherent biomolecular mechanism of CNS diseases. This chapter describes proteomic and glycoproteomic approaches based on liquid chromatography/tandem mass spectrometry (LC-MS or LC-MS/MS) for the qualitative and quantitative assessment of proteins and glycoproteins expressed in CNS. Proteins and glycoproteins, extracted by a mass spectrometry friendly surfactant from CNS samples, were subjected to enzymatic (tryptic) digestion and three down-stream analyses: (1) a nano LC system coupled with a high-resolution MS instrument to achieve qualitative proteomic profile, (2) a nano LC system combined with a triple quadrupole MS to quantify identified proteins, and (3) glycoprotein enrichment prior to LC-MS/MS analysis. Enrichment techniques can be applied to improve coverage of low abundant glycopeptides/glycoproteins. An example described in this chapter is hydrophilic interaction liquid chromatographic (HILIC) enrichment to capture glycopeptides, allowing efficient removal of peptides. The combination of three LC-MS/MS-based appr...Continue Reading

Citations

Sep 3, 2020·Cells·Anna IllianoAngela Amoresano
Sep 18, 2020·Molecular & Cellular Proteomics : MCP·Nicholas M RileySharon J Pitteri
Feb 16, 2021·Molecular & Cellular Proteomics : MCP·Nicholas M RileySharon J Pitteri
Aug 11, 2021·Expert Review of Proteomics·Christopher S SauerLingjun Li
Jun 3, 2020·Journal of Proteome Research·Xue DongYehia Mechref
Oct 5, 2021·Expert Review of Proteomics·Niraj BabuAditi Chatterjee

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