Application Of P-31 Nmr Spectroscopy And Chemical Derivatization For Metabolite Profiling Of Lipophilic Compounds In Human Serum
MAGNETIC RESONANCE IN CHEMISTRY(2009)
Abstract
New methods for obtaining metabolic fingerprints of biological samples with improved resolution and sensitivity are highly sought for early disease detection, studies of human health and pathophysiology, and for better understanding systems biology. Considering the complexity of biological samples, interest in biochemical class selection through the use of chemoselective probes for improved resolution and quantitation is increasing. Considering the role of lipids in the pathogenesis of a number of diseases, in this study fingerprinting of lipid metabolites was achieved by P-31 labeling using the derivatizing agent 2-chloro-4,4,5,5-tetramethyldioxaphospholane. Lipids containing hydroxyl, aidehyde and carboxyl groups were selectively tagged with P-31 and then detected with good resolution using P-31 NMR by exploiting the 100% natural abundance and wide chemical shift range of P-31. After standardizing the reaction conditions using representative compounds, the derivatization approach was used to profile lipids in human serum. The results show that the P-31 derivatization approach is simple, reproducible and highly quantitative, and has the potential to profile a number of important lipids in complex biological samples. Copyright (C) 2009 John Wiley & Sons, Ltd.
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Key words
NMR, P-31, metabolite profiling, metabolomics, chemical derivatization, lipids
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