IL-33 promotes eosinophilia in vivo and antagonizes IL-5-dependent eosinophil hematopoiesis ex vivo.

IL-33 promotes eosinophilia in vivo and antagonizes IL-5-dependent eosinophil hematopoiesis ex vivo.
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DOI:
10.1016/j.imlet.2012.12.002
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发表时间:
2013-02
期刊:
影响因子:
4.4
通讯作者:
Rosenberg, Helene F.
Rosenberg, Helene F.
中科院分区:
医学3区
文献类型:
--
作者:
Dyer, Kimberly D.;Percopo, Caroline M.;Rosenberg, Helene F.

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IL-33 is an IL-1 family cytokine that elicits IL-5-dependent eosinophilia in vivo. We show here that IL-33 promotes minimal eosinophil hematopoiesis via direct interactions with mouse bone marrow progenitors ex vivo and that it antagonizes eosinophil hematopoiesis promoted by IL-5 on SCF and Flt3L primed bone marrow progenitor cells in culture. SCF and Flt3L primed progenitors respond to IL-33 by acquiring an adherent, macrophage-like phenotype, and by releasing macrophage-associated cytokines into the culture medium. IL-33-mediated antagonism of IL-5 was reproduced in part by the addition of GM-CSF and was inhibited by the actions of neutralizing anti-GM-CSF antibody. These findings suggest that the direct actions of IL-33 on bone marrow progenitors primed with SCF and Flt3L are antagonistic to the actions of IL-5 and are mediated in part by GM-CSF.
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