| Title | Recombinant Human Granulocyte Colony-Stimulating Factor Significantly Decreases the Expression of CXCR3 and CCR6 on T Cells and Preferentially Induces T helper Cells to a T helper 17 Phenotype in Peripheral Blood Harvests. | | Author(s) | Sun LX, Ren HY, Shi YJ, Wang LH, Qiu ZX | | Institution | Department of Hematology, Peking University First Hospital, Beijing, People's Republic of China. | | Source | Biol Blood Marrow Transplant 2009 Jul; 15(7):835-43. | | Abstract | The aim of this study was to investigate the expression of chemokine receptors on T cells and functional changes of T helper (Th) cells in peripheral blood stem cell (PBSC) harvests after treating healthy donors with recombinant human granulocyte colony-stimulating factor (rhG-CSF). Using multiparameter flow cytometry, we analyzed the expression of CXCR3 and CCR6 on T cells and the production of interferon-gamma (IFN-gamma), interleukin-4 (IL-4), and IL-17 by CD4(+) Th cells in PBSC grafts of healthy donors after in vivo rhG-CSF application. Alterations in the relative expression levels of T cell receptor beta variable (TCRBV) family members were determined using real-time polymerase chain reaction (PCR). rhG-CSF mobilization significantly decreased the expression of CXCR3 and CCR6 on T cells. Treating donors with rhG-CSF resulted in decreased IFN-gamma production and dramatically increased IL-4 and IL-17 secretion by CD4(+) Th cells, leading to T cell polarization from the Th1 to the Th2 phenotype and a preferential increase in IL-17-producing CD4(+) Th cells. We did not observe any differences in the relative expression levels of TCRBV family members before and after in vivo rhG-CSF application. Our results suggest that the expression of CXCR3 and CCR6 on donor T cells was dramatically downregulated and an IL-17 phenotype of CD4(+) Th cells was preferentially induced in PBSC grafts after treating healthy donors with rhG-CSF. The observed effects of rhG-CSF on T cells may be independent of the relative expression levels of TCRBV family members. | | Language | eng | | Pub Type(s) | Journal Article
| | PubMed ID | 19539215 |
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