title: Cutting edge: genetic characterization of IFN-producing killer dendritic cells.
abstract: The combined phenotypic expression of CD11c(low)B220(+)CD122(+)DX5(+) has been used to define a novel cell type termed IFN-producing killer dendritic cells (IKDC). IKDC readily produce IFN-gamma and demonstrate spontaneous cytotoxic activity toward tumors, suggesting that a modulation of IKDC number may be beneficial in cancer treatment. We examined various mouse strains and found that IKDC number was highly variable between the different strains. A linkage analysis associated the distal arm of chromosome 7 with variations in IKDC number. The genetic contribution of chromosome 7 to the regulation of IKDC number was confirmed through the use of congenic mice. We further demonstrate that IKDC proportion is regulated by intrinsic hematopoietic factors. We discuss the role of various candidate genes in the regulation of this newly described cell type and its implication in therapy.
authors.affiliation: Department of Microbiology and Immunology, University of Montreal and Maisonneuve-Rosemont Hospital Research Center, Montreal, Canada.
authors.forename: Fanny
authors.initials: F
authors.lastname: Guimont-Desrochers
authors.forename: Zachary John
authors.initials: ZJ
authors.lastname: Cappello
authors.forename: Miguel
authors.initials: M
authors.lastname: Chagnon
authors.forename: Marcia
authors.initials: M
authors.lastname: McDuffie
authors.forename: Sylvie
authors.initials: S
authors.lastname: Lesage
mesh_terms: D000818:Animals; D039521:CD11c Antigen / Q000096:biosynthesis / Q000235:genetics; D003713:Dendritic Cells / Q000276:immunology* / Q000378:metabolism* / Q000473:pathology; D005260:Female; D020022:Genetic Predisposition to Disease; D039421:Integrin alpha2 / Q000096:biosynthesis / Q000235:genetics; D007372:Interferons / Q000096:biosynthesis* / Q000235:genetics; D007694:Killer Cells, Natural / Q000276:immunology* / Q000378:metabolism* / Q000473:pathology; D017493:Leukocyte Common Antigens / Q000096:biosynthesis / Q000235:genetics; D007958:Leukocyte Count; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D008809:Mice, Inbred C3H; D008810:Mice, Inbred C57BL; D016688:Mice, Inbred NOD; D016513:Mice, SCID; D009369:Neoplasms / Q000235:genetics / Q000276:immunology / Q000473:pathology / Q000628:therapy
chemical_list: D039521:CD11c Antigen; D039421:Integrin alpha2; D007372:Interferons; D017493:Leukocyte Common Antigens