Malignant Fibrous Histiocytoma(MFH) Cells and Macrophages/Histiocytes Have a Common Antigen Recognized by a Monoclonal Antibody Risen against a Rat MFH-Derived Cloned Cell Line.

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  • KUMAGAI Daijiro
    Veterinary Teaching Hospital, College of Agriculture, Osaka Prefecture University
  • YAMATE Jyoji
    Department of Veterinary Pathology, College of Agriculture, Osaka Prefecture University
  • TAJIMA Tomoko
    Department of Veterinary Microbiology, College of Agriculture, Osaka Prefecture University
  • KUWAMURA Mitsuru
    Department of Veterinary Pathology, College of Agriculture, Osaka Prefecture University
  • KOTANI Takao
    Department of Veterinary Pathology, College of Agriculture, Osaka Prefecture University
  • SAKUMA Sadashige
    Department of Veterinary Pathology, College of Agriculture, Osaka Prefecture University

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Abstract

A monoclonal antibody (B9) was generated by using a rat malignant fibrous histiocytoma (MFH)-derived cloned cell line (MT-8) as the immunogen. Immunohistochemically, B9 reacted specifically with a cytoplasmic antigen of MT-8 cells. Furthermore, B9 immunolabeled another MFH-derived cloned cells (MT-9) and histiocytic sarcoma cells, as well as macrophages/histiocytes in normal and diseased tissues of rats. These findings suggest the presence of a common antigen recognized by B9 between MFH cells and macrophages/histiocytes. This suggests that MFH cells may express histiocytic nature.

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