title: G-CSF mobilizes slanDCs (6-sulfo LacNAc+ dendritic cells) with a high proinflammatory capacity.
abstract: Donor dendritic cells (DCs) play a pivotal role in the induction of immunity and tolerance after peripheral blood stem cell transplantation (PBSCT). Treatment of healthy donors with granulocyte-colony stimulating factor (G-CSF) increases the numbers of tolerogenic DCs and T cells among mobilized blood leukocytes in the graft. SlanDCs (6-sulfo LacNAc+ DCs), a major source of IL-12 and TNF-alpha in blood, have not been studied in this respect. Here, we demonstrate that slanDCs (14.9 x 10(6)/L to 64.0 x 10(6)/L) are efficiently mobilized by G-CSF and retain their capacity to produce IL-12 and TNF-alpha at high levels. Furthermore, G-CSF-mobilized slanDCs programmed the differentiation of Th1 cells and displayed a particularly strong capacity to stimulate the proliferation of naive allogeneic T cells. Thus, slanDCs transfused into recipients of allogeneic peripheral blood stem cell (PBSC) transplants are functionally fully capable and may be critical in supporting graft-versus-host disease as well as graft-versus-leukemia effects.
authors.affiliation: Institute of Immunology, Technische Universität Dresden, Dresden, Germany.
authors.forename: Susanne H C
authors.initials: SH
authors.lastname: Baumeister
authors.forename: Kristina
authors.initials: K
authors.lastname: Hölig
authors.forename: Martin
authors.initials: M
authors.lastname: Bornhäuser
authors.forename: Michael
authors.initials: M
authors.lastname: Meurer
authors.forename: E Peter
authors.initials: EP
authors.lastname: Rieber
authors.forename: Knut
authors.initials: K
authors.lastname: Schäkel
mesh_terms: D000276:Adjuvants, Immunologic / Q000494:pharmacology*; D000606:Amino Sugars; D003713:Dendritic Cells / Q000187:drug effects* / Q000276:immunology* / Q000378:metabolism; D005434:Flow Cytometry; D006086:Graft vs Host Disease / Q000276:immunology; D016179:Granulocyte Colony-Stimulating Factor / Q000494:pharmacology*; D018380:Hematopoietic Stem Cell Transplantation / Q000009:adverse effects; D006801:Humans; D007249:Inflammation / Q000276:immunology*; D018664:Interleukin-12 / Q000096:biosynthesis; D008070:Lipopolysaccharides / Q000378:metabolism*; D014181:Transplantation Immunology; D014409:Tumor Necrosis Factor-alpha / Q000096:biosynthesis
chemical_list: C467438:6-sulfo-LacNac; D000276:Adjuvants, Immunologic; D000606:Amino Sugars; D008070:Lipopolysaccharides; D014409:Tumor Necrosis Factor-alpha; D016179:Granulocyte Colony-Stimulating Factor; D018664:Interleukin-12