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Quantitative and Qualitative Method for Sphingomyelin by LC-MS Using Two Stable Isotopically Labeled Sphingomyelin Species
Published on: May 7, 2018
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Quantitative and Qualitative Method for Sphingomyelin by LC-MS Using Two Stable Isotopically Labeled Sphingomyelin
Kotaro Hama1, Yuko Fujiwara2, Kazuaki Yokoyama2
1Faculty of Pharmaceutical Sciences, Teikyo University; khama@pharm.teikyo-u.ac.jp.
Journal of Visualized Experiments : Jove
|May 22, 2018
Summary
This study introduces a new liquid chromatography-tandem mass spectrometry method for analyzing sphingomyelin (SM) species. The technique enables both qualitative and quantitative analysis, improving characterization in biological and cosmetic samples.
Area of Science:
- Analytical Chemistry
- Biochemistry
- Lipidomics
Background:
- Sphingomyelin (SM) is a crucial sphingolipid in mammalian cells.
- SM comprises a phosphorylcholine head and a ceramide tail.
- Variations in the long chain base (LCB) and N-acyl moiety create diverse SM species.
Purpose of the Study:
- To develop a comprehensive method for qualitative and quantitative analysis of sphingomyelin (SM).
- To characterize various SM species based on their structural components.
- To establish a robust method for SM quantitation in biological and industrial contexts.
Main Methods:
- Utilized liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS).
- Employed MS/MS/MS (MS3) experiments to determine carbon and double bond numbers in LCB and N-acyl chains.
- Incorporated stable isotopically labeled SM species for accurate quantitative analysis.
Main Results:
- Successfully estimated the number of carbons and double bonds in SM's LCB and N-acyl moieties.
- Developed a quantitative method for SM using internal standards.
- Demonstrated the utility of the method for characterizing diverse SM species.
Conclusions:
- The presented LC-ESI-MS/MS method offers precise qualitative and quantitative analysis of sphingomyelin.
- This technique is valuable for detailed characterization of SM in biological samples and cosmetic products.
- The method enhances the understanding of sphingolipid diversity and composition.
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