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Glycoproteomics in neurodegenerative diseases Hwang H; Zhang J; Chung KA; Leverenz JB; Zabetian CP; Peskind ER; Jankovic J; Su Z; Hancock AM; Pan C; Montine TJ; Pan S; Nutt J; Albin R; Gearing M; Beyer RP; Shi M; Zhang JMass Spectrom Rev 2010[Jan]; 29 (1): 79-125Protein glycosylation regulates protein function and cellular distribution. Additionally, aberrant protein glycosylations have been recognized to play major roles in human disorders, including neurodegenerative diseases. Glycoproteomics, a branch of proteomics that catalogs and quantifies glycoproteins, provides a powerful means to systematically profile the glycopeptides or glycoproteins of a complex mixture that are highly enriched in body fluids, and therefore, carry great potential to be diagnostic and/or prognostic markers. Application of this mass spectrometry-based technology to the study of neurodegenerative disorders (e.g., Alzheimer's disease and Parkinson's disease) is relatively new, and is expected to provide insight into the biochemical pathogenesis of neurodegeneration, as well as biomarker discovery. In this review, we have summarized the current understanding of glycoproteins in biology and neurodegenerative disease, and have discussed existing proteomic technologies that are utilized to characterize glycoproteins. Some of the ongoing studies, where glycoproteins isolated from cerebrospinal fluid and human brain are being characterized in Parkinson's disease at different stages versus controls, are presented, along with future applications of targeted validation of brain specific glycoproteins in body fluids.|Amino Acid Sequence[MESH]|Glycoproteins/*analysis/cerebrospinal fluid/*metabolism[MESH]|Glycosylation[MESH]|Humans[MESH]|Mass Spectrometry/*methods/trends[MESH]|Molecular Sequence Data[MESH]|Neurodegenerative Diseases/cerebrospinal fluid/diagnosis/*metabolism[MESH]|Proteomics/*methods/trends[MESH] |
