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- W1592992802 abstract "Abstract We report the generation of macrophage-hybridomas, obtained by somatic cell fusion between macrophage-enriched C3H.eB spleen cell population, and a drug-resistant MPC-11 myeloma cell line, designated as 4T00.1L1 clone. Screening for hybridomas possessing macrophage properties was carried out by assaying the presence of two macrophage-specific enzymes: lysozyme and nonspecific esterase. Two hybridomas, E2-7 and E2-10, were selected for further studies. We found that clones of E2-7 (E2-7.7) did not express Fc receptors but possessed cell-surface Ia molecules. In contrast, clones of E2-10 (E2-10.20) possessed Fc receptors but were devoid of Ia molecules. E2-7.7 did, however, express Fc receptors after mitomycin treatment, whereas E2-10.20 eliminated the expression of Fc receptors after treatment with mitomycin C. Opsonized erythrocytes were phagocytized by E2-10.20 cells, but not by E2-7.7. Phagocytosis was thus correlated with the possession of Fc receptors. Testing the response of KLH-primed lymph node cells to KLH-pulsed hybridoma cells, we found that E2-7.7 cells caused antigen-specific lymphoproliferative response, whereas E2-10.20 did not. Thus, antigens could be presented by E2-7.7 but not by E2-10.20 cells. The response was shown to be mediated by T but not by B lymphocytes. The difference in antigen-presenting capacity could not be attributed to differences in antigen uptake by the different hybridomas, because the two hybridomas manifested the same level of pinocytosis. Both hybridomas produced IL1. The differences in the properties of the two hybridomas may indicate that the normal partners represent two distinct subpopulations of macrophages. The segregation of functional properties among the hybridoma clones may lead to a clarification of the dependence of distinct functions on defined molecular structures." @default.
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- W1592992802 date "1984-04-01" @default.
- W1592992802 modified "2023-10-18" @default.
- W1592992802 title "Macrophage-hybridomas: generation, structure, and function." @default.
- W1592992802 doi "https://doi.org/10.4049/jimmunol.132.4.1741" @default.
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