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IRSN, Institut de radioprotection et de sûreté nucléaire

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Enhancing Nuclear Safety


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Proliferation of early human myeloid precursors induced by interleukin-1 and recombinant souble CD23

Mossalayi MD, Arock M, Bertho JM, Blanc C, Dalloul AH, Hofstetter H, Sarfati M, Delespesse G, Debre P.
Blood, Volume 75, Issue 10, 1990, Pages 1924-1927

Document type > *Article de revue

Keywords > radiological protection, radiohematology, interleukin

Research Unit > IRSN/DRPH/SRBE/LTCRA

Authors > BERTHO Jean-Marc

Publication Date > 01/10/1990

Summary

Low affinity Fce receptors (Fc?RII/CD23) or their soluble fragments have various biologic effects on B- and T-cell lineages. In this study, we have assessed the effect of recombinant soluble CD23 (rsCD23) on the proliferation of human bone marrow (BM)-derived myeloid precursors with or without recombinant interleukin-1 (rIL-1) addition. Non-adherent CD2- or CD34+ BM cell subsets were used as target cells. Our results show that rsCD23 in synergy with rIL-1 displays an interleukin-3-like activity as it promotes the proliferation of multipotential marrow precurssors. This effect was abolished by anti-CD23 addition to these cultures, but was not affected by anti-IL-3 monoclonal antibody. Furthermore, sequential study indicates that rIL-1 induces bone marrow cell responsiveness to rsCD23.
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