Monoclonal antibodies as probes for differentiation and tumor-associated antigens: a Forssman specificity on teratocarcinoma stem cells |
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Authors: | P L Stern K R Willison E Lennox G Galfrè C Milstein D Secher A Ziegler |
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Institution: | MRC Laboratory of Molecular Biology Hills Road Cambridge CB2 2QH, England;Pathology Department Harvard Medical School Boston, Massachusetts 02115 USA |
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Abstract: | A set of monoclonal antibodies derived by fusing P3-NS1/1-Ag4-1 myeloma cells with spleen cells from a rat immunized with mouse spleen were screened for activity against a tumor cell panel. One of these antibodies was found to react only with mouse embryonal carcinoma cells and no other tumor cell type tested, including differentiated derivatives of teratocarcinomas. In the adult mouse, this antigen is expressed by subpopulations of cells in the spleen, bone marrow, lymph node, brain, kidney and testes, although not in liver and thymus. This antigen has a species and tissue distribution consistent with that of Forssman antigen. The molecules which carry this specificity on the embryonal carcinoma cells appear to be glycolipids. |
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