Human epidermal keratinocytes (EK) secrete factors able to sustain the proliferation of early myeloid cells and, in particular, the generation of basophils. This activity was previously attributed to IL-3, although no definitive in situ demonstration of this cytokine was provided. In regard to the possible physiological relevance of these data, we investigated herein the nature of EK-derived factors responsible for basophil promotion. Our data show that EK-derived supernatants (EK-sup) contain IL-3 as well as soluble CD23 (sCD23), both known for their colony stimulating activity. Messenger RNA for IL-3 and CD23 were also detected in EK. Blocking experiments using specific neutralizing monoclonal antibodies (mAb) further indicate that EK-derived basophil promoting activity is mainly due to the presence of IL-3 and sCD23 in EK-sup. Furthermore, by contrast to IL-3, sCD23 secretion by EK is cortisone sensitive and highly enhanced by IL-4, suggesting distinct regulatory mechanisms for their production.
A H Dalloul, M Arock, C Fourcade, J Y Béranger, P Jaffray, P Debré, M D Mossalayi
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International Reviews of Immunology | 1997 |
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R Schmaltz, YY Wang, QX Kung, FT Liu, T Petro, SS Chen |
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S Kondo, A Ciarletta, KJ Turner, DN Sauder, RC McKenzie |
Journal of Investigative Dermatology | 1995 |
Leukemic erythroderma with elevated plasma IL-3 and hyperhistaminemia: in situ expression of IL-3 mRNA in leukemic cells
H Kishimoto, T Matsunaga, T Yamamoto, H Yokozeki, I Katayama, K Nishioka |
Journal of Dermatological Science | 1995 |
CD23 (FcɛRII) activation induces the nitric oxide synthase pathway in human keratinocytes: possible relevance in cutaneous allergic diseases
PA Bécherel, LL Goff, M Arock |
Research in Immunology | 1995 |
Cytokines: Interleukins and Their Receptors
R Kurzrock, M Talpaz |
1995 | |
Involvement of cyclic AMP and nitric oxide in immunoglobulin E-dependent activation of Fc epsilon RII/CD23+ normal human keratinocytes
PA Bécherel, MD Mossalayi, F Ouaaz, LL Goff, B Dugas, N Paul-Eugène, C Frances, O Chosidow, E Kilchherr, JJ Guillosson |
Journal of Clinical Investigation | 1994 |
CD23 and IgE expression during the human immune response to cutaneous leishmaniasis : Possible role in monocyte activation
I Vouldoukis, F Issaly, C Fourcade, N Paul-Eugène, M Arock, JP Kolb, OA da Silva, L Monjour, H Poinsot, Y Tselentis, B Dugas, P Debré, MD Mossalayi |
Research in Immunology | 1994 |
Functional analysis of human bone-marrow- and thymus-derived early T cells
MD Mossalayi, F Mentz, AH Dalloul, C Blanc, H Merle-Béral, M Arock, P Debré |
Research in Immunology | 1994 |