Study of sample preparation influence on bacterial lipids profile in matrix-assisted laser desorption/ionization time-of-flight mass spectrometry.

Autor: Arendowski A; Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Toruń, Poland., Sibińska E; Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Toruń, Poland.; Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland., Miśta W; Radiotherapy Department, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice, Poland., Fijałkowski P; Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Toruń, Poland.; Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland., Złoch M; Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Toruń, Poland.; Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland., Gabryś D; Radiotherapy Department, Maria Sklodowska-Curie National Research Institute of Oncology, Gliwice, Poland., Pomastowski P; Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Toruń, Poland.
Jazyk: angličtina
Zdroj: Lipids [Lipids] 2024 Jan; Vol. 59 (1), pp. 13-26. Date of Electronic Publication: 2023 Dec 07.
DOI: 10.1002/lipd.12383
Abstrakt: Lipids are one of the cell components therefore it is important to be able to accurately assess them. One of the analytical techniques used to study lipid profiles is matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI TOF MS). The present study attempted to select optimal conditions for sample preparation and MALDI MS analysis of bacterial lipidome in both positive and negative ion modes using different extraction protocols-Folch, Matyash, and Bligh & Dyer, solvents used to apply samples, and matrices such as 9-aminoacridine (9-AA), α-cyano-4-hydroxycinnamic acid (CHCA), 2,5-dihydroxybenzoic acid (DHB), 2-mercaptobenzothiazole (MBT), and 2,4,6-trihydroxyacetophenone (THAP). The obtained results allowed concluding that DHB or CHCA matrices are suitable for lipid analysis in the positive mode, and in the negative mode THAP or 9-AA. The most appropriate protocol for extracting lipids from bacterial cells was the Bligh & Dyer method in both ionization modes. The use of the solvent TA30, which was a mixture of acetonitrile and 0.1% trifluoroacetic acid in water, provided on the spectra a significant number of signals from lipids in all groups analyzed, such as fatty acyls, glycerolipids, and glycerophospholipids.
(© 2023 AOCS.)
Databáze: MEDLINE
Externí odkaz: