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Characterization and comparison site-specific N-glycosylation profiling of milk fat globule membrane proteome in donkey and human colostrum and mature milk. 2023

Boyuan Guan, and Zhenghan Zhang, and Xueyan Cao, and Mei Yang, and Yuxia Chai, and Xiakouna Amantai, and Xue Luo, and Daguang Feng, and Yiming Liu, and Xiqing Yue, and Xiaoyu Liu
College of Food Science, Shenyang Agricultural University, Shenyang 11086, China.

Milk fat globule membrane (MFGM) proteins are highly glycosylated and involved in various biological processes within the body. However, information on site-specific N-glycosylation of MFGM glycoproteins in donkey and human milk remains limited. This study aimed to map the most comprehensive site-specific N-glycosylation fingerprinting of donkey and human MFGM glycoproteins using a site-specific glycoproteomics strategy. We identified 1,360, 457, 2,617, and 986 site-specific N-glycans from 296, 77, 214, and 196 N-glycoproteins in donkey colostrum (DC), donkey mature milk (DM), human colostrum (HC), and human mature milk (HM), respectively. Bioinformatics was used to describe the structure-activity relationships of DC, DM, HC, and HM MFGM N-glycoproteins. The results revealed differences in the molecular composition of donkey and human MFGM N-glycoproteins and the dynamic changes to site-specific N-glycosylation of donkey and human MFGM glycoproteins during lactation, deepening our understanding of the composition of donkey and human MFGM N-glycoproteins and their potential physiological roles.

UI MeSH Term Description Entries
D008894 Milk Proteins The major protein constituents of milk are CASEINS and whey proteins such as LACTALBUMIN and LACTOGLOBULINS. IMMUNOGLOBULINS occur in high concentrations in COLOSTRUM and in relatively lower concentrations in milk. (Singleton and Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed, p554) Milk Protein,Protein, Milk,Proteins, Milk
D008895 Milk, Human Milk that is produced by HUMAN MAMMARY GLANDS. Breast Milk,Human Milk,Milk, Breast
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D003126 Colostrum The thin, yellow, serous fluid secreted by the mammary glands during pregnancy and immediately postpartum before lactation begins. It consists of immunologically active substances, white blood cells, water, protein, fat, and carbohydrates. Colostrums
D005260 Female Females
D006017 Glycolipids Any compound containing one or more monosaccharide residues bound by a glycosidic linkage to a hydrophobic moiety such as an acylglycerol (see GLYCERIDES), a sphingoid, a ceramide (CERAMIDES) (N-acylsphingoid) or a prenyl phosphate. (From IUPAC's webpage) Glycolipid
D006023 Glycoproteins Conjugated protein-carbohydrate compounds including MUCINS; mucoid, and AMYLOID glycoproteins. C-Glycosylated Proteins,Glycosylated Protein,Glycosylated Proteins,N-Glycosylated Proteins,O-Glycosylated Proteins,Glycoprotein,Neoglycoproteins,Protein, Glycosylated,Proteins, C-Glycosylated,Proteins, Glycosylated,Proteins, N-Glycosylated,Proteins, O-Glycosylated
D006031 Glycosylation The synthetic chemistry reaction or enzymatic reaction of adding carbohydrate or glycosyl groups. GLYCOSYLTRANSFERASES carry out the enzymatic glycosylation reactions. The spontaneous, non-enzymatic attachment of reducing sugars to free amino groups in proteins, lipids, or nucleic acids is called GLYCATION (see MAILLARD REACTION). Protein Glycosylation,Glycosylation, Protein
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia

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