title: Comparative proteomic exploration of whey proteins in human and bovine colostrum and mature milk using iTRAQ-coupled LC-MS/MS.
abstract: Whey, an essential source of dietary nutrients, is widely used in dairy foods for infants. A total of 584 whey proteins in human and bovine colostrum and mature milk were identified and quantified by the isobaric tag for relative and absolute quantification (iTRAQ) proteomic method. The 424 differentially expressed whey proteins were identified and analyzed according to gene ontology (GO) annotation, Kyoto encyclopedia of genes and genomes (KEGG) pathway, and multivariate statistical analysis. Biological processes principally involved biological regulation and response to stimulus. Major cellular components were extracellular region part and extracellular space. The most prevalent molecular function was protein binding. Twenty immune-related proteins and 13 proteins related to enzyme regulatory activity were differentially expressed in human and bovine milk. Differentially expressed whey proteins participated in many KEGG pathways, including major complement and coagulation cascades and in phagosomes. Whey proteins show obvious differences in expression in human and bovine colostrum and mature milk, with consequences for biological function. The results here increase our understanding of different whey proteomes, which could provide useful information for the development and manufacture of dairy products and nutrient food for infants. The advanced iTRAQ proteomic approach was used to analyze differentially expressed whey proteins in human and bovine colostrum and mature milk.
authors.affiliation: a College of Food Science , Shenyang Agricultural University , Shenyang , PR China.
authors.forename: Mei
authors.initials: M
authors.lastname: Yang
authors.affiliation: a College of Food Science , Shenyang Agricultural University , Shenyang , PR China.
authors.forename: Xueyan
authors.initials: X
authors.lastname: Cao
authors.affiliation: a College of Food Science , Shenyang Agricultural University , Shenyang , PR China.
authors.forename: Rina
authors.initials: R
authors.lastname: Wu
authors.affiliation: b Inner Mongolia Yili Industrial Group Company Limited , Hohhot , PR China.
authors.forename: Biao
authors.initials: B
authors.lastname: Liu
authors.affiliation: b Inner Mongolia Yili Industrial Group Company Limited , Hohhot , PR China.
authors.forename: Wenhui
authors.initials: W
authors.lastname: Ye
authors.affiliation: a College of Food Science , Shenyang Agricultural University , Shenyang , PR China.
authors.forename: Xiqing
authors.initials: X
authors.lastname: Yue
authors.affiliation: a College of Food Science , Shenyang Agricultural University , Shenyang , PR China.
authors.forename: Junrui
authors.initials: J
authors.lastname: Wu
mesh_terms: D000818:Animals; D002417:Cattle; D002853:Chromatography, Liquid; D016000:Cluster Analysis; D003126:Colostrum / Q000737:chemistry*; D063990:Gene Ontology; D006801:Humans; D008892:Milk / Q000737:chemistry*; D008895:Milk, Human / Q000737:chemistry*; D025341:Principal Component Analysis; D040901:Proteomics; D053719:Tandem Mass Spectrometry; D000067816:Whey Proteins / Q000737:chemistry* / Q000235:genetics
chemical_list: D000067816:Whey Proteins
keywords: Bovine milk; human milk; lactation phase; quantitative proteomics; whey