PMID- 38339050 OWN - NLM STAT- MEDLINE DCOM- 20240214 LR - 20240214 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 25 IP - 3 DP - 2024 Feb 1 TI - Label-Free Liquid Chromatography-Mass Spectrometry Quantitation of Relative N- and O-Glycan Concentrations in Human Milk in Japan. LID - 10.3390/ijms25031772 [doi] LID - 1772 AB - Human milk is abundant in carbohydrates and includes human milk oligosaccharides (HMOs) and N/O-glycans conjugated to proteins. HMO compositions and concentrations vary in individuals according to the maternal secretor status based on the fucosyltransferase 2 genotype; however, the profile of N/O-glycans remains uninvestigated because of the analytical complexity. Herein, we applied a label-free chromatography-mass spectrometry (LC-MS) technique to elucidate the variation in the composition and concentration of N/O-glycans in human milk. We used label-free LC-MS to relatively quantify 16 N-glycans and 12 O-glycans in 200 samples of Japanese human milk (1-2 months postpartum) and applied high performance anion exchange chromatography with pulsed amperometric detection to absolutely quantify the concentrations of 11 representative HMOs. Cluster analysis of the quantitative data revealed that O-glycans and several HMOs were classified according to the presence or absence of fucose linked to galactose while N-glycans were classified into a different group from O-glycans and HMOs. O-glycans and HMOs with fucose linked to galactose were more abundant in human milk from secretor mothers than from nonsecretor mothers. Thus, secretor status influenced the composition and concentration of HMOs and O-glycans but not those of N-glycans in human milk. FAU - Yamaguchi, Toshiyuki AU - Yamaguchi T AUID- ORCID: 0009-0008-5674-7054 AD - Milk Science Research Institute, Megmilk Snow Brand Co., Ltd., 1-1-2 Minamidai, Kawagoe-shi 350-1165, Saitama, Japan. FAU - Fukudome, Hirofumi AU - Fukudome H AD - Milk Science Research Institute, Megmilk Snow Brand Co., Ltd., 1-1-2 Minamidai, Kawagoe-shi 350-1165, Saitama, Japan. FAU - Higuchi, Junichi AU - Higuchi J AD - Milk Science Research Institute, Megmilk Snow Brand Co., Ltd., 1-1-2 Minamidai, Kawagoe-shi 350-1165, Saitama, Japan. FAU - Takahashi, Tomoki AU - Takahashi T AUID- ORCID: 0000-0002-1039-7393 AD - Department of Research and Development, Bean Stalk Snow Co., Ltd., 1-1-2 Minamidai, Kawagoe-shi 350-1165, Saitama, Japan. FAU - Tsujimori, Yuta AU - Tsujimori Y AD - Department of Research and Development, Bean Stalk Snow Co., Ltd., 1-1-2 Minamidai, Kawagoe-shi 350-1165, Saitama, Japan. FAU - Ueno, Hiroshi M AU - Ueno HM AUID- ORCID: 0000-0002-8293-9163 AD - Milk Science Research Institute, Megmilk Snow Brand Co., Ltd., 1-1-2 Minamidai, Kawagoe-shi 350-1165, Saitama, Japan. AD - Department of Research and Development, Bean Stalk Snow Co., Ltd., 1-1-2 Minamidai, Kawagoe-shi 350-1165, Saitama, Japan. FAU - Toba, Yasuhiro AU - Toba Y AD - Department of Research and Development, Bean Stalk Snow Co., Ltd., 1-1-2 Minamidai, Kawagoe-shi 350-1165, Saitama, Japan. FAU - Sakai, Fumihiko AU - Sakai F AUID- ORCID: 0000-0002-5379-4823 AD - Milk Science Research Institute, Megmilk Snow Brand Co., Ltd., 1-1-2 Minamidai, Kawagoe-shi 350-1165, Saitama, Japan. LA - eng PT - Journal Article DEP - 20240201 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 28RYY2IV3F (Fucose) RN - X2RN3Q8DNE (Galactose) RN - 0 (Polysaccharides) RN - 0 (Oligosaccharides) SB - IM MH - Female MH - Humans MH - *Milk, Human/chemistry MH - Japan MH - *Fucose/analysis MH - Galactose MH - Liquid Chromatography-Mass Spectrometry MH - Polysaccharides/analysis MH - Mass Spectrometry MH - Oligosaccharides/chemistry PMC - PMC10855831 OTO - NOTNLM OT - N-glycan OT - O-glycan OT - human milk OT - human milk oligosaccharide OT - liquid chromatography-mass spectrometry OT - secretor status COIS- Yamaguchi, T., Fukudome, H., Higuchi, J. Ueno, H. M., and Sakai, F. are employees of Megmilk Snow Brand Co., Ltd. Megmilk Snow Brand manufactures and sells dairy foods in Japan and some Asian and Oceanian countries. Takahashi, T., Tsujimori, Y., Ueno, H. M., and Toba, Y. are employees of Bean Stalk Snow Co., Ltd. Bean Stalk Snow sells infant formulas and dietary supplements for infants and pregnant and lactating women in Japan. EDAT- 2024/02/10 10:51 MHDA- 2024/02/10 22:54 PMCR- 2024/02/01 CRDT- 2024/02/10 01:12 PHST- 2023/12/28 00:00 [received] PHST- 2024/01/26 00:00 [revised] PHST- 2024/01/29 00:00 [accepted] PHST- 2024/02/10 22:54 [medline] PHST- 2024/02/10 10:51 [pubmed] PHST- 2024/02/10 01:12 [entrez] PHST- 2024/02/01 00:00 [pmc-release] AID - ijms25031772 [pii] AID - ijms-25-01772 [pii] AID - 10.3390/ijms25031772 [doi] PST - epublish SO - Int J Mol Sci. 2024 Feb 1;25(3):1772. doi: 10.3390/ijms25031772.