Abstract
We have generated three murine monoclonal antibodies to the new human osteosarcoma cell line 4444T. Analysis of their binding patterns to tumor cell lines, normal human tissues, and surgical tumor specimens indicates that the antibodies recognize a subset of human sarcomas and stromal tissues but fail to react with carcinomas or normal human epithelial tissue. These mesenchyme-specific monoclonal antibodies bind to antigens in the extracellular matrix. One antibody is specific in its binding to the muscularis arteriosus. We expect these antibodies to aid in the identification of sarcomas and to extend our knowledge of the components of the extracellular matrix and its interaction with tumors.
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