Urinary glycan markers for disease
Robust assays for the isolation and characterization of urinary FOS (free oligosaccharides) have been developed to screen patients for altered protein and/or lipid glycosylation. A FOS analysis can therefore identify potential biomarkers for hepatocellular carcinoma, since variations in glycosylatio...
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Published in | Biochemical Society transactions Vol. 39; no. 1; p. 393 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
England
01.02.2011
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Abstract | Robust assays for the isolation and characterization of urinary FOS (free oligosaccharides) have been developed to screen patients for altered protein and/or lipid glycosylation. A FOS analysis can therefore identify potential biomarkers for hepatocellular carcinoma, since variations in glycosylation as a result of tumorigenecity should be detectable in the FOS of patients. HCC (hepatocellular carcinoma) accounts for 80-90% of all liver cancers. It occurs more often in men than women and occurs mostly in people 50-60 years old. The disease is more common in parts of Africa and Asia than in North or South America and Europe. Using a combination of solid-phase extraction techniques and affinity chromatography, followed by separation of urinary FOS by NP (normal phase)-HPLC and HIAX (hydrophilic interaction and anion-exchange)-HPLC, more than 200 different species have been identified in patient samples. The high incidence of small sialylated oligosaccharides in HCC patients suggests that pro-inflammatory markers may be detected as early indicators of disease progression. In addition, the methods developed here to isolate and analyse excreted glycoprotein- and glycosphingolipid-bound oligosaccharides have been used to characterize changes in metabolic processes that underlie a number of human genetic disorders. The ability to predict disease status in microlitre amounts of readily available non-invasive urine samples indicates that rapid methods for screening can be developed. |
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AbstractList | Robust assays for the isolation and characterization of urinary FOS (free oligosaccharides) have been developed to screen patients for altered protein and/or lipid glycosylation. A FOS analysis can therefore identify potential biomarkers for hepatocellular carcinoma, since variations in glycosylation as a result of tumorigenecity should be detectable in the FOS of patients. HCC (hepatocellular carcinoma) accounts for 80-90% of all liver cancers. It occurs more often in men than women and occurs mostly in people 50-60 years old. The disease is more common in parts of Africa and Asia than in North or South America and Europe. Using a combination of solid-phase extraction techniques and affinity chromatography, followed by separation of urinary FOS by NP (normal phase)-HPLC and HIAX (hydrophilic interaction and anion-exchange)-HPLC, more than 200 different species have been identified in patient samples. The high incidence of small sialylated oligosaccharides in HCC patients suggests that pro-inflammatory markers may be detected as early indicators of disease progression. In addition, the methods developed here to isolate and analyse excreted glycoprotein- and glycosphingolipid-bound oligosaccharides have been used to characterize changes in metabolic processes that underlie a number of human genetic disorders. The ability to predict disease status in microlitre amounts of readily available non-invasive urine samples indicates that rapid methods for screening can be developed. |
Author | Su, Ying-Hsiu Butters, Terry D Alonzi, Dominic S |
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SubjectTerms | Biomarkers - chemistry Biomarkers - urine Carcinoma, Hepatocellular - diagnosis Carcinoma, Hepatocellular - pathology Carcinoma, Hepatocellular - urine Chromatography, High Pressure Liquid - methods Disease Progression Glycosylation Humans Liver Neoplasms - diagnosis Liver Neoplasms - pathology Liver Neoplasms - urine Polysaccharides - chemistry Polysaccharides - urine |
Title | Urinary glycan markers for disease |
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