Characterization and direct quantitation of sphingoid base-1-phosphates from lipid extracts: A shotgun lipidomics approach

Xuntian Jiang, Xianlin Han

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


Here, we have extended shotgun lipidomics for the characterization and quantitation of sphingosine-1-phosphate (S1P) and dihydrosphingosine-1-phosphate (DHS1P) in crude lipid extracts in the presence of ammonium hydroxide by using precursor ion scanning of m/z 79.0 (corresponding to [PO3] -) in the negative-ion mode. It is demonstrated that a broad linear dynamic range for the quantitation of both S1P and DHS1P and a detection limit at low amol/ml concentration are achieved using this approach. The developed method for the quantitation of sphingoid base-1-phosphates is generally simpler and more efficient than other previously published methods. Multiple factors influencing the quantitation of sphingoid base-1-phosphates, including ion suppression, extraction efficiency, and potential overlapping with other molecular species, were examined extensively and/or are discussed. Mass levels of S1P and DHS1P in multiple biological samples, including human plasma, mouse plasma, and mouse brain tissues (e.g., cortex, cerebellum, spinal cord, and brain stem), were determined by the developed methodology. Accordingly, this technique, as a new addition to shotgun lipidomics technology, will be extremely useful for understanding the pathways of sphingolipid metabolism and for exploring the important roles of sphingoid base-1-phosphates in a wide range of physiological and pathological studies.

Original languageEnglish (US)
Pages (from-to)1865-1873
Number of pages9
JournalJournal of lipid research
Issue number8
StatePublished - 2006
Externally publishedYes


  • Brain tissues
  • Dihydrosphingosine-1-phosphate
  • Electrospray ionization mass spectrometry
  • Sphingolipid metabolism

ASJC Scopus subject areas

  • Endocrinology
  • Biochemistry
  • Cell Biology


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