Abstract
Monoclonal antibodies to sheep erythrocytes (SRBC) have proved useful in identifying two Fc receptors on mouse macrophages, one for IgG2a, and one for IgG1 and IgG2b. We have used monoclonal IgG3 anti-SRBC to identify a third Fc receptor on mouse macrophages which binds IgG3 uniquely. This receptor is present on primary resident and thioglycolate-induced peritoneal macrophages and on some macrophage cell lines. The binding of IgG3-coated SRBC is inhibited by aggregated byt not monomeric IgG3, and not by IgG1, IgG2a, and IgG2b aggregates. It is unaffected by treating the macrophages with trypsin or cytochalasin B and occurs at both 4 degrees and 37 degrees C. IgG3, like all other IgG subclasses, mediates phagocytosis. We have also generated a variant macrophage line which bears the receptors for IgG1 and IgG2b and for IgG2a, but not for IgG3.
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Selected References
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- Andersson B., Skoglund A. C., Rosen A. Functional characterization of mouse T lymphocytes with IgM-Fc receptors. I. Studies on ADCC and helper cell function. J Immunol. 1979 Nov;123(5):1936–1939. [PubMed] [Google Scholar]
- Bianco C., Griffin F. M., Jr, Silverstein S. C. Studies of the macrophage complement receptor. Alteration of receptor function upon macrophage activation. J Exp Med. 1975 Jun 1;141(6):1278–1290. doi: 10.1084/jem.141.6.1278. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Diamond B., Bloom B. R., Scharff M. D. The Fc receptors of primary and cultured phagocytic cells studied with homogeneous antibodies. J Immunol. 1978 Oct;121(4):1329–1333. [PubMed] [Google Scholar]
- Diamond B., Scharff M. D. IgG1 and IgG2b share the Fc receptor on mouse macrophages. J Immunol. 1980 Aug;125(2):631–633. [PubMed] [Google Scholar]
- Dossett J. H., Kronvall G., Williams R. C., Jr, Quie P. G. Antiphagocytic effects of staphylococcal protein A. J Immunol. 1969 Dec;103(6):1405–1410. [PubMed] [Google Scholar]
- Gordon J., Murgita R. A. Suppression and augmentation of the primary in vitro immune response by different classes of antibodies. Cell Immunol. 1975 Feb;15(2):392–402. doi: 10.1016/0008-8749(75)90017-9. [DOI] [PubMed] [Google Scholar]
- Grey H. M., Hirst J. W., Cohn M. A new mouse immunoglobulin: IgG3. J Exp Med. 1971 Feb 1;133(2):289–304. doi: 10.1084/jem.133.2.289. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Heusser C. H., Anderson C. L., Grey H. M. Receptors for IgG: subclass specificity of receptors on different mouse cell types and the definition of two distinct receptors on a macrophage cell line. J Exp Med. 1977 May 1;145(5):1316–1327. doi: 10.1084/jem.145.5.1316. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kronvall G., Grey H. M., Williams R. C., Jr Protein A reactivity with mouse immunoglobulins. Structural relationship between some mouse and human immunoglobulins. J Immunol. 1970 Nov;105(5):1116–1123. [PubMed] [Google Scholar]
- Mantovani B. Different roles of IgG and complement receptors in phagocytosis by polymorphonuclear leukocytes. J Immunol. 1975 Jul;115(1):15–17. [PubMed] [Google Scholar]
- McNabb T., Koh T. Y., Dorrington K. J., Painter R. H. Structure and function of immunoglobulin domains. V. Binding, University of immunoglobulin G and fragments to placental membrane preparations. J Immunol. 1976 Sep;117(3):882–888. [PubMed] [Google Scholar]
- Potter M., Pumphrey J. G., Walters J. L. Growth of primary plasmacytomas in the mineral oil-conditioned peritoneal environment. J Natl Cancer Inst. 1972 Jul;49(1):305–308. [PubMed] [Google Scholar]
- Ralph P., Nakoinz I., Diamond B., Yelton D. All classes of murine IgG antibody mediate macrophage phagocytosis and lysis of erythrocytes. J Immunol. 1980 Nov;125(5):1885–1888. [PubMed] [Google Scholar]
- Ralph P., Prichard J., Cohn M. Reticulum cell sarcoma: an effector cell in antibody-dependent cell-mediated immunity. J Immunol. 1975 Feb;114(2 Pt 2):898–905. [PubMed] [Google Scholar]
- Scribner D. J., Fahrney D. Neutrophil receptors for IgG and complement: their roles in the attachment and ingestion phases of phagocytosis. J Immunol. 1976 Apr;116(4):892–897. [PubMed] [Google Scholar]
- Segal D. M., Titus J. A. The subclass specificity for the binding of murine myeloma proteins to macrophage and lymphocyte cell lines and to normal spleen cells. J Immunol. 1978 Apr;120(4):1395–1403. [PubMed] [Google Scholar]
- Strober W., Hague N. E., Lum L. G., Henkart P. A. IgA-Fc receptors on mouse lymphoid cells. J Immunol. 1978 Dec;121(6):2440–2445. [PubMed] [Google Scholar]
- Unkeless J. C. Characterization of a monoclonal antibody directed against mouse macrophage and lymphocyte Fc receptors. J Exp Med. 1979 Sep 19;150(3):580–596. doi: 10.1084/jem.150.3.580. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Unkeless J. C. The presence of two Fc receptors on mouse macrophages: evidence from a variant cell line and differential trypsin sensitivity. J Exp Med. 1977 Apr 1;145(4):931–945. doi: 10.1084/jem.145.4.931. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Walker W. S. Separate Fc-receptors for immunoglogulins IgG2a and IgG2b on an established cell line of mouse macrophages. J Immunol. 1976 Apr;116(4):911–914. [PubMed] [Google Scholar]