Abstract:
:A myeloma cell-reactive monoclonal antibody (MoAb), MM4, was generated from BALB/c mice immunized with alternate injections of cells from two human multiple myeloma (MM) cell lines. Screening by the enzyme-linked immunosorbent assay (ELISA) technique showed that MM4 reacted with human MM cell lines (7 of 7 positive), as well as bone marrow aspirates from MM patients (4 of 4 cases positive). MM4 did not react with marrow aspirates from control patients (3 cases), or with peripheral blood mononuclear (PBM) cells from normal subjects, lymphocytic (12 cases) and myelogenous (8 cases) leukemia patients. In addition, MM4 was negative with polymorphonuclear leukocytes and RBCs from normal donors. By means of the immunoperoxidase technique, the MM4-reactive antigen was detected in paraffin-embedded, Zenker formalin-fixed bone marrow biopsies of MM (12 of 12 cases positive), Waldenström's macroglobulinemia (2 of 2 cases positive), asymptomatic plasma cell dyscrasia (4 of 4 cases positive), and certain lymphomas (2 of 5 cases positive). Marrow biopsies from lymphocytic (5 cases) and myelogenous (5 cases) leukemias were uniformly negative. The MM4-reactive antigen also was expressed on plasma cells generated from pokeweed mitogen (PWM)-stimulated normal PBM cultures. The pattern of reactivity of MM4 with lymphocytes of B origin was similar to that of the plasma cell MoAb PCA-1. Competitive binding studies showed, however, that these two MoAbs recognized distinct antigenic determinants. These observations suggest that MM4 may be useful for the study of human plasma cell dyscrasias.
journal_name
Bloodjournal_title
Bloodauthors
Tong AW,Lee JC,Stone MJsubject
Has Abstractpub_date
1987-01-01 00:00:00pages
238-45issue
1eissn
0006-4971issn
1528-0020journal_volume
69pub_type
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