2022
Differentiation of Sialyl Linkages Using a Combination of Alkyl Esterification and Phenylhydrazine Derivatization: Application for N-Glycan Profiling in the Sera of Patients with Lung Cancer
JEŽKOVÁ, Petra, Jana SKŘIČKOVÁ, Gejza WIMMER, Jana ZELINKOVÁ, Zbyněk ZDRÁHAL et. al.Základní údaje
Originální název
Differentiation of Sialyl Linkages Using a Combination of Alkyl Esterification and Phenylhydrazine Derivatization: Application for N-Glycan Profiling in the Sera of Patients with Lung Cancer
Autoři
JEŽKOVÁ, Petra (203 Česká republika, domácí), Jana SKŘIČKOVÁ (203 Česká republika), Gejza WIMMER (703 Slovensko), Jana ZELINKOVÁ (203 Česká republika, domácí), Zbyněk ZDRÁHAL (203 Česká republika, domácí) a Erika LATTOVÁ (703 Slovensko, garant, domácí)
Vydání
ANALYTICAL CHEMISTRY, UNITED STATES, AMER CHEMICAL SOC, 2022, 0003-2700
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10406 Analytical chemistry
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 7.400
Kód RIV
RIV/00216224:14740/22:00125948
Organizační jednotka
Středoevropský technologický institut
UT WoS
000798539200014
Klíčová slova anglicky
Mass-spectrometric analysis; Structural-characterization; Acid derivatization; Glycosylation; Adenocarcinoma; Oligosaccharides; Stabilization; Glycoproteins
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 2. 11. 2024 21:03, Ing. Martina Blahová
Anotace
V originále
Alterations in oligosaccharides and types of sialic acid (SA) attachments have been associated with different pathological states. Matrix-assisted laser desorption mass spectrometry (MS) is commonly used for glycosylation studies. However, native sialylated glycans are suppressed or not detected during MS experiments. Consequently, different approaches have been employed to neutralize the negative charge of the carboxyl group. In this study, we present the advantage of phenylhydrazine (PHN) labeling for the detection and efficient discrimination of SA linkages when this derivatization follows alkyl esterification. As expected, PHN-labeled sialylated oligosaccharides with the 2,6-linkage type can be easily recognized according to the additional shift in mass corresponding to the presence of a methyl or ethyl group. Surprisingly, oligosaccharides with the 2,3-linked SA residue instead of a lactone were detected carrying the second PHN unit. This was beneficial as no further processing after esterification was needed to stabilize the lactone form. Moreover, during tandem mass experiments, all modified glycans produced favorable fragmentation patterns with a coherent recognition of SA linkages. Although both types of esterification, herein called the EST-PHN approach, provided comparable results, methylation exhibited marginally higher linkage specificity than ethyl esterification. The simplicity and effectiveness of the methodology are demonstrated on the model compound, sialyllactose, and its applicability for biological studies is presented on N-glycan profiling in the sera of lung cancer patients.
Návaznosti
EF18_046/0015974, projekt VaV |
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90127, velká výzkumná infrastruktura |
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