PMID- 10753825 OWN - NLM STAT- MEDLINE DCOM- 20000505 LR - 20220317 IS - 0006-4971 (Print) IS - 0006-4971 (Linking) VI - 95 IP - 8 DP - 2000 Apr 15 TI - Granulocyte-colony stimulating factor mobilizes T helper 2-inducing dendritic cells. PG - 2484-90 AB - Peripheral blood stem cells (PBSC) obtained from granulocyte-colony stimulating factor (G-CSF)-mobilized donors are increasingly used for allogeneic transplantation. Despite a 10-fold higher dose of transplanted T cells, acute graft-versus-host disease (GVHD) does not develop in higher proportion in recipients of PBSC than in recipients of marrow. T cells from G-CSF-treated experimental animals preferentially produce IL-4 and IL-10, cytokines characteristic of Th2 responses, which are associated with diminished GVHD-inducing ability. We hypothesized that G-CSF-mobilized PBSC contain antigen-presenting cells, which prime T-lymphocytes to produce Th2 cytokines. Two distinct lineages of dendritic cells (DC) have been described in humans, DC1 and DC2, according to their ability to induce naive T-cell differentiation to Th1 and Th2 effector cells, respectively. We have used multicolor microfluorometry to enumerate DC1 and DC2 in the peripheral blood of normal donors. G-CSF treatment with 10 to 16 microg/kg per day for 5 days increased peripheral blood DC2 counts from a median of 4.9 x 10(6)/L to 24.8 x 10(6)/L (P =.0009), whereas DC1 counts did not change. Purified DC1, from either untreated or G-CSF treated donors, induced the proliferation of allogeneic naive T cells, but fresh DC2 were poor stimulators. Tumor necrosis factor-alpha (TNF-alpha)-activated DC1 induced allogeneic naive T cells to produce IFN-gamma, which is typical of Th1 responses, whereas TNF-alpha-activated DC2 induced allogeneic naive T cells to produce IL-4 and IL-10, which are typical of Th2 responses. PBSC transplants contained higher doses of DC2 than marrow transplants (median, 2.4 x 10(6)/kg versus 0.5 x 10(6)/kg) (P =.006), whereas the dose of DC1 was comparable. Thus, it is conceivable that transplantation of G-CSF-stimulated PBSC does not result in overwhelming acute GVHD because the graft contains predominantly Th2-inducing DC. Adoptive transfer of purified DC2 may be exploited to induce immune deviation after transplantation of hematopoietic stem cells or organ allografts. (Blood. 2000;95:2484-2490) FAU - Arpinati, M AU - Arpinati M AD - Division of Clinical Research, Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA, USA. FAU - Green, C L AU - Green CL FAU - Heimfeld, S AU - Heimfeld S FAU - Heuser, J E AU - Heuser JE FAU - Anasetti, C AU - Anasetti C LA - eng GR - AI33484/AI/NIAID NIH HHS/United States GR - AI37678/AI/NIAID NIH HHS/United States GR - CA18029/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Blood JT - Blood JID - 7603509 RN - 143011-72-7 (Granulocyte Colony-Stimulating Factor) SB - IM CIN - Blood. 2000 Apr 15;95(8):2482-3. PMID: 10753824 CIN - Blood. 2000 Oct 1;96(7):2635. PMID: 11183128 CIN - Blood. 2001 Jan 1;97(1):333. PMID: 11194828 MH - Adoptive Transfer MH - *Antigen Presentation MH - Dendritic Cells/*immunology MH - Graft vs Host Disease/immunology/prevention & control MH - Granulocyte Colony-Stimulating Factor/*pharmacology MH - *Hematopoietic Stem Cell Mobilization MH - Hematopoietic Stem Cell Transplantation MH - Humans MH - Th2 Cells/*immunology MH - *Transplantation Immunology MH - Transplantation, Homologous EDAT- 2001/02/07 11:00 MHDA- 2001/02/07 11:01 CRDT- 2001/02/07 11:00 PHST- 2001/02/07 11:00 [pubmed] PHST- 2001/02/07 11:01 [medline] PHST- 2001/02/07 11:00 [entrez] AID - S0006-4971(20)64135-0 [pii] PST - ppublish SO - Blood. 2000 Apr 15;95(8):2484-90.