Lipidomic “Deep Profiling”: An Enhanced Workflow to Reveal New Molecular Species of Signaling Lipids
Analytical Chemistry2014Vol. 86(6), pp. 3043–3047
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Pradeep Narayanaswamy, Sudhirkumar Shinde, Robert Šulc, Rachel Kraut, Gregory O. Staples, Chung Hwee Thiam, Rudolf Grimm, Börje Sellergren, Federico Torta, Markus R. Wenk
Abstract
Current mass spectrometry-based lipidomics aims to comprehensively cover wide ranges of lipid classes. We introduce a strategy to capture phospho-monoester lipids and improve the detection of long-chain base phosphates (LCB-Ps, e.g., sphingosine-1-phosphate). Ten novel LCB-Ps (d18:2, t20:1, odd carbon forms) were discovered and characterized in tissues from human and mouse, as well in D. melanogaster and S. cerevisiae. These findings have immediate relevance for our understanding of sphingosine-1-phosphate biosynthesis, signaling, and degradation.
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