An Antiproliferative Monoclonal Antibody, 4F9, Reacts with a Subset of Human CD45 Molecules.

概要

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The 4F9 monoclonal antibody (IgM) was established for its ability to induce mild growth inhibition to a human T cell line, SUP-T13. The antibody reacted with all hematopoietic cell lines, but not with nonhematopoietic cell lines. Im-munoprecipitation and immunoblotting experiments showed that 4F9 recognized cell surface molecules with apparent molecular weights of between 190 and 220 kDa which varied slightly in size among the cell lines. Therefore, it was strong-ly suggsted that 4F9 recognizes a subset of human CD45 molecules. In immuno-histochemical analysis with paraffin-embedded tissue sections, 4F9 reacted with most lymphocytes except for germinal center B cells in lymph nodes and both medullary and cortical thymocytes. The results of the present study indicated that the anti-CD45, such as 4F9 antibody, affect growth of malignant T cells. The 4F9 antibody is useful in the immunohistochemical analysis of CD45 mole-cules in paraffin-embedded tissue sections.
札幌医科大学の論文
1992-00-00