ASSOCIATED EXPRESSION OF CD1 ANTIGEN AND FC RECEPTOR FOR IGE ON EPIDERMAL LANGERHANS CELLS FROM PATIENTS WITH ATOPIC-DERMATITIS

Authors:
  • EVEMM VANDERDONK
    EMM VANDERDONK
  • PBPLB BRUYNZEEL
    PLB BRUYNZEEL
  • MCM CAPRON
    M CAPRON
  • GDGC DEGAST
    GC DEGAST
  • GMGC MUDDE
    GC MUDDE
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  • 1 October 1988
    • journal article
    • research article
Abstract
The presence of Fc receptors for IgE on epidermal Langerhans cells (LC) from patients with atopic dermatitis (AD) was demonstrated by three different types of experiments. Firstly, cell-bound IgE on LC was removed by acid elution and restored by highly purified human myeloma IgE (IgE.kappa.). Secondly, after pepsin digestion of cell-bound IgE the number of LC staining with anti-human light chain (.kappa., .lambda.) antibodies significantly decreased in contrast to the number of LC staining with anti-human .kappa. heavy chain antibody. Thirdly, LC formed rosettes with sheep red blood cells (SRBC) coated with IgE.kappa. Epidermal LC from normal non-atopic controls, did not form rosettes with SRBC-IgE. The SRBC-IgE rosette formation could be inhibited by preincubation with IgE.kappa. and BB10 (MoAb directed against the Fc receptor for IgE on human eosinophils, platelets and macrophages), but also with human IgG, whereas the SRBC-IgG rosette formation could be inhibited neither by IgE.kappa. nor by BB10. Both the SRBC-IgE and the SRBC-IgG rosette formation could be inhibited by OKT6 (anti-CD1) antibody. The results of inhibition studies with OKT6 antibody on the reconstitution of IgE on epidermal LC after acid elution suggest an associated expression of the CD1 antigen and the Fc receptor for IgE.

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