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Acute phase inflammation is characterized by rapid changes in plasma/peritoneal fluid N-glycosylation in mice.

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Authors
Rombouts, Yoann
Jónasdóttir, Hulda S
Hipgrave Ederveen, Agnes L
Reiding, Karli R
Jansen, Bas C
Freysdottir, Jona
Hardardottir, Ingibjörg
Ioan-Facsinay, Andreea
Giera, Martin
Wuhrer, Manfred
Issue Date
2016-06

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Acute phase inflammation is characterized by rapid changes in plasma/peritoneal fluid N-glycosylation in mice. 2016, 33 (3):457-70 Glycoconj. J.
Abstract
Murine zymosan-induced peritonitis is a widely used model for studying the molecular and cellular events responsible for the initiation, persistence and/or resolution of inflammation. Among these events, it is becoming increasingly evident that changes in glycosylation of proteins, especially in the plasma and at the site of inflammation, play an important role in the inflammatory response. Using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS)-based glycosylation profiling, we investigated the qualitative and quantitative effect of zymosan-induced peritonitis on N-glycosylation in mouse plasma and peritoneal fluid. Our results show that both N-glycomes exhibit highly similar glycosylation patterns, consisting mainly of diantennary and triantennary complex type N-glycans with high levels (>95 %) of galactosylation and sialylation (mostly NeuGc) and a medium degree of core fucosylation (30 %). Moreover, MS/MS structural analysis, assisted by linkage-specific derivatization of sialic acids, revealed the presence of O-acetylated sialic acids as well as disialylated antennae ("branching sialylation") characterized by the presence of α2-6-linked NeuGc on the GlcNAc of the NeuGcα2-3-Galβ1-3-GlcNAc terminal motif. A significant decrease of (core) fucosylation together with an increase of both α2-3-linked NeuGc and "branching sialylation" were observed in N-glycomes of mice challenged with zymosan, but not in control mice injected with PBS. Importantly, substantial changes in glycosylation were already observed 12 h after induction of peritonitis, thereby demonstrating an unexpected velocity of the biological mechanisms involved.
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To access publisher's full text version of this article, please click on the hyperlink in Additional Links field or click on the hyperlink at the top of the page marked Files. This article is open access.
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http://dx.doi.org/ 10.1007/s10719-015-9648-9
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4891370/
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openAccess
ae974a485f413a2113503eed53cd6c53
10.1007/s10719-015-9648-9
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