title: Flt-3 ligand, in combination with bovine granulocyte-macrophage colony-stimulating factor and interleukin-4, promotes the growth of bovine bone marrow derived dendritic cells.
abstract: Culture of bone marrow precursor cells with cytokines, including granulocyte-macrophage colony-stimulating factor (GM-CSF), interleukin-4 (IL-4) and the tyrosine kinase receptor binding proteins Flt-3 ligand (Flt-3L) and stem-cell factor (SCF), has previously been shown, in both mouse and human, to result in the generation of large numbers of dendritic cells. We extend these findings to bovine dendritic cells. Culture of bovine bone marrow cells with GM-CSF, IL-4 and either Flt-3L or SCF enhanced the generation of low buoyant-density dendritic cells. However, only the addition of Flt-3L to cells cultured with GM-CSF and IL-4 was shown to increase the number of dendritic cells and induce the differentiation of dendritic cells with potent capacity to stimulate allogeneic T cells and resting CD4+ memory T cells. The effective ability to stimulate T cells was associated with the expression of major histocompatibility complex (MHC) class II molecules and CD80/86 by dendritic cells. Bovine bone marrow derived dendritic cells appeared to be exclusively of myeloid origin because they expressed the myeloid-related antigens CD14, MyD-1 and CD11b.
authors.affiliation: Institute for Animal Health, Compton, Newbury, Berkshire, RG20 7NN, UK.
authors.forename: J C
authors.initials: JC
authors.lastname: Hope
authors.forename: D
authors.initials: D
authors.lastname: Werling
authors.forename: R A
authors.initials: RA
authors.lastname: Collins
authors.forename: B
authors.initials: B
authors.lastname: Mertens
authors.forename: C J
authors.initials: CJ
authors.lastname: Howard
mesh_terms: D000818:Animals; D017951:Antigen Presentation; D015703:Antigens, CD / Q000378:metabolism; D002417:Cattle; D002454:Cell Differentiation / Q000187:drug effects; D002455:Cell Division / Q000187:drug effects; D003713:Dendritic Cells / Q000166:cytology* / Q000187:drug effects* / Q000276:immunology; D004347:Drug Interactions; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000008:administration & dosage*; D006412:Hematopoietic Stem Cells / Q000166:cytology / Q000187:drug effects / Q000276:immunology; D006801:Humans; D015847:Interleukin-4 / Q000008:administration & dosage*; D007959:Lymphocyte Culture Test, Mixed; D008565:Membrane Proteins / Q000008:administration & dosage*; D051379:Mice; D010641:Phenotype; D011994:Recombinant Proteins / Q000008:administration & dosage; D019089:Stem Cell Factor / Q000008:administration & dosage
chemical_list: D015703:Antigens, CD; D008565:Membrane Proteins; D011994:Recombinant Proteins; D019089:Stem Cell Factor; C084881:flt3 ligand protein; D015847:Interleukin-4; D016178:Granulocyte-Macrophage Colony-Stimulating Factor