Exploring the Effects of Cyclosporin A to Isocyclosporin A Rearrangement on Ion Mobility Separation

0584678 - MBÚ 2024 RIV US eng J - Článek v odborném periodiku
Mácha, Hynek - Zápal, Jakub - Kuzma, Marek - Luptáková, Dominika - Lemr, Karel - Havlíček, Vladimír
Exploring the Effects of Cyclosporin A to Isocyclosporin A Rearrangement on Ion Mobility Separation.
Analytical Chemistry. Roč. 96, č. 10 (2024), s. 4163-4170. ISSN 0003-2700. E-ISSN 1520-6882
Grant CEP: GA ČR(CZ) GA21-17044S
Institucionální podpora: RVO:61388971
Klíčová slova: Cyclosporin A * socyclosporin A * massspectrometry
Obor OECD: Analytical chemistry
Impakt faktor: 7.4, rok: 2022
Způsob publikování: Open access
https://pubs.acs.org/doi/10.1021/acs.analchem.3c05165

Cyclosporin A (CycA) is a peptide secondary metabolite derived from fungi that plays a crucial role in transplantation surgery. Cyclic traveling wave ion mobility mass spectrometry (IM-MS) revealed an N> O peptidyl shift in singly protonated CycA to isocyclosporin A (isoA), whereas no such isomerization was observed for doubly protonated and sodiated molecules. CycA and isoA were able to be separated by considering doubly protonated precursors using a specific ion fragment. In parallel, sodium ion stabilization facilitated the simultaneous separation and quantitation of singly charged cyclosporin isomers with the limit of detection and coefficient of determination of 1.3% and 0.9908 for CycA in isoA and 1.0% and 0.9830 for isoA in CycA, respectively. Finally, H-1-C-13 gHSQC NMR experiments permitted parallel recording of up to 11 cyclosporin conformers. The ratios were determined by integrating the volume of cross-peaks of the upfield resonating hydrogen in the diastereotopic methylene group of sarcosine-3.
Trvalý link: https://hdl.handle.net/11104/0352586