Long-Chain Base (LCB)-Targeted Lipidomics Study Uncovering the Presence of a Variety of LCBs in Mammalian Blood
In: Separations, Vol 7, Iss 57, Jg. 7 (2020), Heft 57, p 57
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Zugriff:
Globotriaosylsphingosine (LysoGb 3 ) is a biomarker for Fabry disease (OMIM 301500) that contains long-chain bases (LCBs) as a building block. There have been several studies proposing that LysoGb 3 forms with distinct LCBs could be putative disease subtype-related biomarkers for this congenital disorder; however, there have been no detailed multiple reaction monitoring-based studies examining the LCB distribution in this lysosphingolipid. To achieve this, we established an assay procedure that aimed at elucidating the LCB-targeted lipidome using liquid chromatography–tandem mass spectrometry. Consistent with previous studies, we found d18:1 to be the major LCB species of the LysoGb 3 in pooled human plasma, while some atypical LCBs, such as d18:2, d18:0, t18:1, d16:1, and d17:1, were detected as minor fractions. When the same methodology was applied to fetal bovine serum (FBS) as a positive control, we identified additional unique LCB species, such as t18:0, d20:1, t19:1, and t21:1, in herbivore LysoGb 3 . Furthermore, we found an elevation of sphingosine and LysoGb 3 , which are N-deacylated forms of ceramide and Gb 3 , respectively, in FBS, suggesting that ceramidase activity may be involved in this process. Thus, our LCB-targeted lipidomics data revealed that mammalian LCBs in glycosphingolipids have a greater variety of molecular species than previously expected.
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Long-Chain Base (LCB)-Targeted Lipidomics Study Uncovering the Presence of a Variety of LCBs in Mammalian Blood
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Autor/in / Beteiligte Person: | Ohira, Mari ; Okuyama, Torayuki ; Mashima, Ryuichi |
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Zeitschrift: | Separations, Vol 7, Iss 57, Jg. 7 (2020), Heft 57, p 57 |
Veröffentlichung: | MDPI AG, 2020 |
Medientyp: | academicJournal |
ISSN: | 2297-8739 (print) |
DOI: | 10.3390/separations7040057 |
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