Lipidomic profiling of biological tissues using off-line two-dimensional high-performance liquid chromatography-mass spectrometry
Jazyk angličtina Země Nizozemsko Médium print-electronic
Typ dokumentu hodnotící studie, časopisecké články, práce podpořená grantem
PubMed
21705004
DOI
10.1016/j.chroma.2011.05.081
PII: S0021-9673(11)00742-4
Knihovny.cz E-zdroje
- MeSH
- hmotnostní spektrometrie s elektrosprejovou ionizací metody MeSH
- hydrofobní a hydrofilní interakce MeSH
- isomerie MeSH
- kur domácí MeSH
- lipidy chemie MeSH
- mozek - chemie * MeSH
- prasata MeSH
- vaječný žloutek chemie MeSH
- vysokoúčinná kapalinová chromatografie metody MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- hodnotící studie MeSH
- práce podpořená grantem MeSH
- Názvy látek
- lipidy MeSH
Lipids are important components in all biological tissues having many essential roles associated with the proper function of the organism. Their analysis in the biological tissues and body fluids is a challenging task due to the extreme sample complexity of polar lipids and to their amphiphilic character. In this work, we describe a new method for the characterization of the lipid composition in various tissues, using off-line two-dimensional coupling of hydrophilic interaction liquid chromatography (HILIC) and reversed-phase (RP) high-performance liquid chromatography coupled to electrospray ionization (ESI) and atmospheric pressure chemical ionization (APCI) mass spectrometry. In the first dimension the total lipid extracts are fractioned using HILIC into individual lipid classes. In total, 19 lipid classes (+3 regioisomeric pairs) that cover a wide range of polarities are separated in one analytical run, which is the highest number of analyzed lipid classes reported so far. The lysophospholipid regioisomers are also separated in HILIC mode followed by the identification based on the characteristic ESI mass spectra. The collected fractions of the various lipid classes are further separated in the RP mode, which offers an excellent resolution of the individual lipid species. Their ESI or APCI mass spectra give correct information on the fatty acid composition and on the individual regioisomeric positions on the glycerol skeleton. Off-line coupling of both modes enables the comprehensive analysis of plant and animal samples as illustrated on the analysis of egg yolk, soya and porcine brain tissues.
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