Quantification of modified nucleotides and nucleosides by isotope dilution mass spectrometry.
gas and liquid chromatography
isotope dilution
mass spectrometry
methylated and modified nucleotides and nucleosides
Journal
Mass spectrometry reviews
ISSN: 1098-2787
Titre abrégé: Mass Spectrom Rev
Pays: United States
ID NLM: 8219702
Informations de publication
Date de publication:
19 Aug 2023
19 Aug 2023
Historique:
revised:
26
07
2023
received:
19
04
2023
accepted:
06
08
2023
medline:
19
8
2023
pubmed:
19
8
2023
entrez:
19
8
2023
Statut:
aheadofprint
Résumé
Epigenetic modifications are closely related to certain disorders of the organism, including the development of tumors. One of the main epigenetic modifications is the methylation of DNA cytosines, 5-methyl-2'-deoxycycytidine. Furthermore, 5-mdC can be oxidized to form three new modifications, 5-(hydroxymethyl)-2'-deoxycytidine, 5-formyl-2'-deoxycytidine, and 5-carboxy-2'-deoxycytidine. The coupling of liquid chromatography with tandem mass spectrometry has been widely used for the total determination of methylated DNA cytosines in samples of biological and clinical interest. These methods are based on the measurement of the free compounds (e.g., urine) or after complete hydrolysis of the DNA (e.g., tissues) followed by a preconcentration, derivatization, and/or clean-up step. This review highlights the main advances in the quantification of modified nucleotides and nucleosides by isotope dilution using isotopically labeled analogs combined with liquid or gas chromatography coupled to mass spectrometry reported in the last 20 years. The different possible sources of labeled compounds are indicated. Special emphasis has been placed on the different types of chromatography commonly used (reverse phase and hydrophilic interaction liquid chromatography) and the derivatization methods developed to enhance chromatographic resolution and ionization efficiency. We have also revised the application of bidimensional chromatography and indicated significant biological and clinical applications of these determinations.
Types de publication
Journal Article
Review
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
© 2023 The Authors. Mass Spectrometry Reviews published by John Wiley & Sons Ltd.
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