Y. Fuchimoto et al., An allelic non-histocompatibility antigen with wide tissue distribution asa marker for chimerism in pigs, TISSUE ANTI, 54(1), 1999, pp. 43-52
It is frequently useful in studies of transplantation to have available an
antibody to a cell surface antigen, which is not itself responsible for tra
nsplant rejection. In this paper, we identify and describe such an antibody
/antigen system in miniature swine. The monoclonal antibody, 1038H10-9, was
found to react to a pig allelic antigen (called PAA), found on a variety o
f pig cells and tissues, including peripheral blood mononuclear cells (PBMC
), thymocytes, lymph node, bone marrow, and skin. Analysis for recipient se
nsitization against PAA was performed by in vitro cell-mediated lympholysis
(CML) assay, mixed lymphocyte reaction (MLR) assay, antibody binding studi
es, and skin graft rejection patterns were examined. No evidence was found
to indicate detection of PAA by any of these assays of alloreactivity. We t
herefore conclude that PAA is an allelic swine cell surface antigen, with w
ide tissue distribution, and that it is not a histocompatibility antigen. I
t should provide a powerful tool for studies of transplantation biology in
miniature swine, such as identification and quantification of chimerism fol
lowing organ transplantation.