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Ceilley, E. et al.

Labeling of fractured human skin with antibodies to BM 600/nicein, epiligrin, kalinin and other matrix components.

A variety of methods were used to fracture the dermal-epidermal junction (DEJ) of human skin. These included warm and hot phosphate buffered saline, trypsin, cold 1 M salt, potassium bromide and proteolytic digestion with dispase. The localization and sensitivity of basement membrane components (bullous pemphigoid antigen, BM 600/nicein, epiligrin, kalinin, laminin, collagens IV and VII (EBA antigen) and linkin) were determined after the DEJ was fractured by each method. We found that the basement membrane zone proteins, BM 600/nicein, epiligrin and kalinin remained with the dermal side of the DEJ fractured through the lamina lucida by cold salt, phosphate buffered saline and potassium bromide. BM 600/nicein, epiligrin and kalinin were not detected after treatment with trypsin. In contrast, laminin, another glycoprotein in the lamina lucida, was insensitive to all of the procedures, but co-localized to the dermal side of DEJ-fractured skin. We also found that separation of the DEJ with brief exposure of skin to 56 degrees C provided a useful substrate for testing the autoantibodies in the sera of patients with epidermolysis bullosa acquisita (EBA). Heat-separated skin can be prepared in a significantly shorter period of time than salt-separated skin.[1]

References

Labeling of fractured human skin with antibodies to BM 600/nicein, epiligrin, kalinin and other matrix components. Ceilley, E., Watanabe, N., Shapiro, D., Verrando, P., Bauer, E.A., Burgeson, R., Briggaman, R.A., Woodley, D.T. J. Dermatol. Sci. (1993) [Pubmed]

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