PMID- 27161864 OWN - NLM STAT- MEDLINE DCOM- 20171117 LR - 20180104 IS - 1535-3907 (Electronic) IS - 1535-3893 (Linking) VI - 15 IP - 6 DP - 2016 Jun 3 TI - Changes in Healthy Human IgG Fc-Glycosylation after Birth and during Early Childhood. PG - 1853-61 LID - 10.1021/acs.jproteome.6b00038 [doi] AB - Glycosylation on the fragment crystallizable (Fc) region of immunoglobulin G (IgG) has a large influence on the interaction of the antibody with Fc gamma receptors (FcgammaRs). IgG consists of four subclasses that all have distinct affinities for the different FcgammaRs. Knowledge about the Fc-glycosylation in healthy human is valuable as reference for new biomarkers and in the design of biopharmaceuticals that rely on IgG Fc-glycosylation. Previously, subclass-specific characterization of IgG Fc-glycosylation was performed for healthy adults, pregnant women, and newborns. For young healthy children, however, the subclass-specific description of IgG Fc-glycosylation is still lacking. Therefore, we performed the IgG subclass-specific analysis of the Fc-glycosylation of 130 healthy humans between birth and 40 years of age, including 22 samples derived from the umbilical cords of newborns. The analysis was performed by a previously published matrix-assisted laser desorption/ionization (MALDI)-time-of-flight (TOF)-mass spectrometry (MS) workflow, including a derivatization step for the linkage-specific stabilization of sialic acids. The characterization revealed that when children start to produce their own IgG they have a decreased galactosylation, sialylation, and bisection and an increased fucosylation compared with newborns. During childhood, the fucosylation and sialylation decrease, whereas bisection increases and galactosylation stays constant. FAU - de Haan, Noortje AU - de Haan N AD - Leiden University Medical Center , Center for Proteomics and Metabolomics, 2300 RC Leiden, The Netherlands. FAU - Reiding, Karli R AU - Reiding KR AD - Leiden University Medical Center , Center for Proteomics and Metabolomics, 2300 RC Leiden, The Netherlands. FAU - Driessen, Gertjan AU - Driessen G AD - Erasmus MC , Pediatrics, 3000 CA Rotterdam, The Netherlands. FAU - van der Burg, Mirjam AU - van der Burg M AD - Erasmus MC , Immunology, 3000 CA Rotterdam, The Netherlands. FAU - Wuhrer, Manfred AU - Wuhrer M AD - Leiden University Medical Center , Center for Proteomics and Metabolomics, 2300 RC Leiden, The Netherlands. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160519 PL - United States TA - J Proteome Res JT - Journal of proteome research JID - 101128775 RN - 0 (Immunoglobulin Fc Fragments) RN - 0 (Immunoglobulin G) RN - 28RYY2IV3F (Fucose) RN - GZP2782OP0 (N-Acetylneuraminic Acid) RN - IY9XDZ35W2 (Glucose) SB - IM MH - Adolescent MH - Adult MH - Age Factors MH - Child MH - Child, Preschool MH - Fucose/metabolism MH - Glucose/metabolism MH - Glycosylation MH - Humans MH - Immunoglobulin Fc Fragments/*chemistry MH - Immunoglobulin G/*chemistry MH - Infant MH - Infant, Newborn MH - N-Acetylneuraminic Acid/metabolism MH - *Proteomics MH - Young Adult OTO - NOTNLM OT - Fc-glycosylation OT - MALDI-TOF-MS OT - N-glycans OT - aging OT - glycopeptides OT - immunoglobulin G (IgG) OT - newborns OT - young children EDAT- 2016/05/11 06:00 MHDA- 2017/11/29 06:00 CRDT- 2016/05/11 06:00 PHST- 2016/05/11 06:00 [entrez] PHST- 2016/05/11 06:00 [pubmed] PHST- 2017/11/29 06:00 [medline] AID - 10.1021/acs.jproteome.6b00038 [doi] PST - ppublish SO - J Proteome Res. 2016 Jun 3;15(6):1853-61. doi: 10.1021/acs.jproteome.6b00038. Epub 2016 May 19.