Summary
The skin explant model was used to determine the effect of antibody reactions against membrane associated antigens on normal human keratinocytes. Addition of specific allo-antibodies against HLA class I antigens induced characteristic changes in the cells on the outermost region of the explant-outgrowth.
A desorganization of the filopodia of these cells occurred and the edges of the cellular border were lifted from the substratum. These signs of detachment were also found when pemphigus serum was added. In both experimental conditions the detachment of the cells was complement independent. After removing the antiserum a recovery took place, but the cells once lifted from the substratum remained recognizable as a ridge of cells.
No changes were observed when the explants were incubated with antibodies against HLA class II antigens. Incubation with specific antibodies against HLA class I antigens not present on the explant had also no effect. We propose that antibody reactions against various membrane associated antigens can induce within a few hours characteristic changes of the cellular margins.
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Vermeer, B.J., Kardaun, S.H., Wijsman, M.C. et al. Morphological studies on cellular detachment induced by antibody reactions directed against membrane associated antigens. Histochemistry 85, 35–40 (1986). https://doi.org/10.1007/BF00508651
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DOI: https://doi.org/10.1007/BF00508651