Abstract
Untargeted lipidomics, with its ability to take a snapshot of the lipidome landscape, is an important tool to highlight lipid changes in pathology or drug treatment models. One of the shortcomings of most untargeted lipidomics based on UHPLC-HRMS is the low throughput, which is not compatible with large-scale screening. In this contribution, we evaluate the application of a sub-5-min high-throughput four-dimensional trapped ion mobility mass spectrometry (HT-4D-TIMS) platform for the fast profiling of multiple complex biological matrices. Human AC-16 cells and mouse brain, liver, sclera, and feces were used as samples. By using a fast 4-min RP gradient, the implementation of TIMS allows us to differentiate coeluting isomeric and isobaric lipids, with correct precursor ion isolation, avoiding co-fragmentation and chimeric MS/MS spectra. Globally, the HT-4D-TIMS allowed us to annotate 1910 different lipid species, 1308 at the molecular level and 602 at the sum composition level, covering 58 lipid subclasses, together with quantitation capability covering more than three orders of magnitude. Notably, TIMS values were highly comparable with respect to longer LC gradients (CV% = 0.39%). These results highlight how HT-4D-TIMS-based untargeted lipidomics possess high coverage and accuracy, halving the analysis time with respect to conventional UHPLC methods, and can be used for fast and accurate untargeted analysis of complex matrices to rapidly evaluate changes of lipid metabolism in disease models or drug discovery campaigns.
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Abbreviations
- AHexCer:
-
Acylhexosylceramide
- ASM:
-
Acylsphingomyelin
- BMP:
-
Bismonoacylglycerophosphate
- CL:
-
Cardiolipin
- CAR:
-
Carnitine
- Cer:
-
Ceramide
- CE:
-
Cholesteryl ester
- CoQ:
-
Coenzyme Q
- DG:
-
Diacylglycerol
- DGGA:
-
Diacylglyceryl glucuronide
- DGDG:
-
Digalactosyldiacylglycerol
- Hex2Cer:
-
Dihexosylceramide
- DCAE:
-
Esterified deoxycholic acid
- DG O-:
-
Ether-linked diacylglycerol
- LPC O-:
-
Ether-linked lysophosphatidylcholine
- LPE O-:
-
Ether-linked lysophosphatidylethanolamine
- MGDG O-:
-
Ether-linked monogalactosyldiacylglycerol
- Ox-PE-O-:
-
Ether-linked oxidized phosphatidylethanolamine
- PC O-:
-
Ether-linked phosphatidylcholine
- PE O-:
-
Ether-linked phosphatidylethanolamine
- PG O-:
-
Ether-linked phosphatidylglycerol
- PI O-:
-
Ether-linked phosphatidylinositol
- PS O-:
-
Ether-linked phosphatidylserine
- TG O-:
-
Ether-linked triacylglycerol
- FA:
-
Fatty acid
- FAHFA:
-
Fatty acid ester of hydroxyl fatty acid
- GM3:
-
Ganglioside GM3
- HBMP:
-
Hemibismonoacylglycerophosphate
- HexCer:
-
Hexosylceramide
- LPC:
-
Lysophophatidylcholine
- LPE:
-
Lysophosphatidylethanolamine
- LPG:
-
Lysophosphatidylglycerol
- LPI:
-
Lysophosphatidylinositol
- LPS:
-
Lysophosphatidylserine
- MG:
-
Monoacylglycerol
- MGDG:
-
Monogalactosyldiacylglycerol
- NAGly:
-
N-Acyl glycine
- NAGlySer:
-
N-Acyl glycyl serine
- Ox-PI-Cer:
-
Oxidized ceramide phosphoinositol
- Ox-PE:
-
Oxidized phosphatidylethanolamine
- Ox-PI:
-
Oxidized phosphatidylinositol
- Ox-SM:
-
Oxidized sphingomyelin
- Ox-SHexCer:
-
Oxidized sulfatide
- PC:
-
Phosphatidylcholine
- PEtOH:
-
Phosphatidylethanol
- PE:
-
Phosphatidylethanolamine
- PG:
-
Phosphatidylglycerol
- PI:
-
Phosphatidylinositol
- PMeOH:
-
Phosphatidylmethanol
- PS:
-
Phosphatidylserine
- SPB:
-
Sphingoid bases
- SM:
-
Sphingomyelin
- ST:
-
Sterol
- SE:
-
Sterol ester
- SHexCer:
-
Sulfatide
- TG:
-
Triacylglycerol
- Hex3Cer:
-
Trihexosylceramide
- Vit. D:
-
Vitamin D
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Acknowledgements
Cells and tissues were kindly donated as part of secondary experiments from Prof. Carrizzo the Department of Medicine (DIPMED, University of Salerno, Italy) and from Prof. Paolisso of the Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, Naples, Italy.
Funding
This work was supported by Ministero dell’Università e della Ricerca (MIUR) project PIR01_00032 BIO OPEN LAB BOL “CUP” J37E19000050007, project CIR01_00032 – BOL “BIO Open Lab—Rafforzamento del capitale umano” and project PNC0000001 D34 Health—Digital Driven Diagnostics, prognostics and therapeutics for sustainable Health care “CUP” B53C22006090001 and Regione Campania (Italy) grant “Combattere la resistenza tumorale: piattaforma integrata multi-disciplinare per un approccio tecnologico innovative alle oncoterapie—CAMPANIA ONCO-TERAPIE” project number B61G18000470007. to P. Campiglia.
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Conceptualization: FM. Methodology: VC. Formal analysis and investigation: DLG, ES. Data curation: TC. Writing—original draft preparation: MGB. Writing—review and editing: ES, SM. Funding acquisition: PC. Supervision: ES, CC.
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Merciai, F., Basilicata, M.G., La Gioia, D. et al. Sub-5-min RP-UHPLC-TIMS for high-throughput untargeted lipidomics and its application to multiple matrices. Anal Bioanal Chem 416, 959–970 (2024). https://doi.org/10.1007/s00216-023-05084-w
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DOI: https://doi.org/10.1007/s00216-023-05084-w