title: Time-resolved quantitative proteome analysis of in vivo intestinal development.
abstract: Postnatal intestinal development is a very dynamic process characterized by substantial morphological changes that coincide with functional adaption to the nutritional change from a diet rich in fat (milk) to a diet rich in carbohydrates on from weaning. Time-resolved studies of intestinal development have so far been limited to investigation at the transcription level or to single or few proteins at a time. In the present study, we elucidate proteomic changes of primary intestinal epithelial cells from jejunum during early suckling (1-7 days of age), middle suckling (7-14 days), and weaning period (14-35 days) in mice, using a label-free proteomics approach. We show differential expression of 520 proteins during intestinal development and a pronounced change of the proteome during the middle suckling period and weaning. Proteins involved in several metabolic processes were found differentially expressed along the development. The temporal expression profiles of enzymes of the glycolysis were found to correlate with the increase in carbohydrate uptake at weaning, whereas the abundance changes of proteins involved in fatty acid metabolism as well as lactose metabolism indicated a nondiet driven preparation for the nutritional change at weaning. Further, we report the developmental abundance changes of proteins playing a vital role in the neonatal acquisition of passive immunity. In addition, different isoforms of several proteins were quantified, which may contribute to a better understanding of the roles of the specific isoforms in the small intestine. In summary, we provide a first, time-resolved proteome profile of intestinal epithelial cells along postnatal intestinal development.
authors.affiliation: Department of Biochemistry and Molecular Biology, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark. jenny.hansson@rdls.nestle.com
authors.forename: Jenny
authors.initials: J
authors.lastname: Hansson
authors.forename: Alexandre
authors.initials: A
authors.lastname: Panchaud
authors.forename: Laurent
authors.initials: L
authors.lastname: Favre
authors.forename: Nabil
authors.initials: N
authors.lastname: Bosco
authors.forename: Robert
authors.initials: R
authors.lastname: Mansourian
authors.forename: Jalil
authors.initials: J
authors.lastname: Benyacoub
authors.forename: Stephanie
authors.initials: S
authors.lastname: Blum
authors.forename: Ole N
authors.initials: ON
authors.lastname: Jensen
authors.forename: Martin
authors.initials: M
authors.lastname: Kussmann
mesh_terms: D000818:Animals; D050260:Carbohydrate Metabolism; D030562:Databases, Protein; D004847:Epithelial Cells / Q000378:metabolism; D005227:Fatty Acids / Q000378:metabolism; D006019:Glycolysis; D007408:Intestinal Absorption; D007413:Intestinal Mucosa / Q000378:metabolism*; D007422:Intestines / Q000201:enzymology / Q000254:growth & development*; D007553:Isotope Labeling; D050356:Lipid Metabolism; D051379:Mice; D008810:Mice, Inbred C57BL; D010455:Peptides / Q000378:metabolism; D020543:Proteome / Q000378:metabolism*; D040901:Proteomics / Q000379:methods*; D013997:Time Factors
chemical_list: D005227:Fatty Acids; D010455:Peptides; D020543:Proteome