Peripheral Blood Stem Cell Mobilization in Healthy Donors by Granulocyte Colony-Stimulating Factor Causes Preferential Mobilization of Lymphocyte Subsets

Frontiers in Immunology

Elisabeth Ersvaer²  Guro Kristin Melve³  Einar K. Kristoffersen³  Geir Egil Eide⁴  Øystein Bruserud⁶ 

[1] Centre for Clinical Research, Haukeland University Hospital, Bergen, Norway;Department of Biomedical Laboratory Sciences, Western Norway University of Applied Sciences, Bergen, Norway;Department of Clinical Science, University of Bergen, Bergen, Norway;Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway;Department of Immunology and Transfusion Medicine, Haukeland University Hospital, Bergen, Norway;Division for Hematology, Department of Medicine, Haukeland University Hospital, Bergen, Norway;

关键词: apheresis;    graft versus host disease;    granulocyte colony-stimulating factor;    hematopoietic stem cell mobilization;    hematopoietic stem cell transplantation;    immune reconstitution;   

DOI  :  10.3389/fimmu.2018.00845

来源: DOAJ

【 摘 要 】

BackgroundAllogeneic hematopoietic stem cell transplantation is associated with a high risk of immune-mediated post-transplant complications. Graft depletion of immunocompetent cell subsets is regarded as a possible strategy to reduce this risk without reducing antileukemic immune reactivity.Study design and methodsWe investigated the effect of hematopoietic stem cell mobilization with granulocyte colony-stimulating factor (G-CSF) on peripheral blood and stem cell graft levels of various T, B, and NK cell subsets in healthy donors. The results from flow cytometric cell quantification were examined by bioinformatics analyses.ResultsThe G-CSF-induced mobilization of lymphocytes was a non-random process with preferential mobilization of naïve CD4+ and CD8+ T cells together with T cell receptor αβ+ T cells, naïve T regulatory cells, type 1 T regulatory cells, mature and memory B cells, and cytokine-producing NK cells. Analysis of circulating lymphoid cell capacity to release various cytokines (IFNγ, IL10, TGFβ, IL4, IL9, IL17, and IL22) showed preferential mobilization of IL10 releasing CD4+ T cells and CD3−19− cells. During G-CSF treatment, the healthy donors formed two subsets with generally strong and weaker mobilization of immunocompetent cells, respectively; hence the donors differed in their G-CSF responsiveness with regard to mobilization of immunocompetent cells. The different responsiveness was not reflected in the graft levels of various immunocompetent cell subsets. Furthermore, differences in donor G-CSF responsiveness were associated with time until platelet engraftment. Finally, strong G-CSF-induced mobilization of various T cell subsets seemed to increase the risk of recipient acute graft versus host disease, and this was independent of the graft T cell levels.ConclusionHealthy donors differ in their G-CSF responsiveness and preferential mobilization of immunocompetent cells. This difference seems to influence post-transplant recipient outcomes.

【 授权许可】

Unknown