title: Bovine colostrum promotes growth and migration of the human keratinocyte HaCaT cell line.
abstract: Bovine colostrum represents a rich source of growth factors, which are known to play a central role in wound healing. The aim of our study was to investigate the possible mitogenic and motogenic effects induced by colostrum on human keratinocytes. Cell proliferation evaluated by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide test and 5-Bromo-2'-deoxyuridine incorporation revealed that colostrum exerts a growth promoting activity. Scratch assay and immunofluorescence of actin cytoskeleton showed its effectiveness also in inducing cell migration. Furthermore, colostrum treatment increases the levels of tyrosine phosphorylated proteins and the activated forms of the extracellular signal-regulated kinases 1 and 2 and such effects appear to be repressed by the tyrosine kinase inhibitor genistein. Our results indicate that the biological activities of colostrum are specifically mediated by the growth factor-induced activation of tyrosine kinase receptors and underline the relevance of the synergistic action exerted by the growth factors in stimulating keratinocyte proliferation and migration essential for tissue repair.
authors.affiliation: San Gallicano Dermatological Institute, IRCCS, Rome, Italy.
authors.forename: Daniela
authors.initials: D
authors.lastname: Kovacs
authors.forename: Giorgia
authors.initials: G
authors.lastname: Cardinali
authors.forename: Nicaela
authors.initials: N
authors.lastname: Aspite
authors.forename: Mauro
authors.initials: M
authors.lastname: Picardo
mesh_terms: D000818:Animals; D002417:Cattle; D002460:Cell Line; D002465:Cell Movement / Q000502:physiology*; D049109:Cell Proliferation / Q000187:drug effects*; D003126:Colostrum / Q000502:physiology*; D005260:Female; D005786:Gene Expression Regulation; D006801:Humans; D015603:Keratinocytes / Q000166:cytology / Q000187:drug effects*; D019950:Mitogen-Activated Protein Kinase 1 / Q000378:metabolism; D048052:Mitogen-Activated Protein Kinase 3 / Q000378:metabolism; D011247:Pregnancy; D020794:Receptor Protein-Tyrosine Kinases / Q000378:metabolism; D014945:Wound Healing / Q000502:physiology
chemical_list: D020794:Receptor Protein-Tyrosine Kinases; D019950:Mitogen-Activated Protein Kinase 1; D048052:Mitogen-Activated Protein Kinase 3