The Fc receptor on thymus-derived lymphocytes: II. Mitogen responsiveness of T lymphocytes bearing the Fc receptor.
The responsiveness of purified Fc- and Fc+ T lymphocytes, isolated from normal spleen cell populations by cell sorting on the fluorescence activated cell sorter, has been examined. Although both Fc- and Fc+ T cells responded to phytohemagglutinin, the response to concanavalin A (Con A) was found to be a characteristic of the Fc+ T lymphocyte. The poor responsiveness of the Fc- T cells to Con A was shown not to be due to a requirement of either different concentrations of Con A or for adherent cells. The addition of Fc+ T cells to the Fc- T cells in a ratio of 1:3 resulted in a mitotic response not significantly different from that observed with the purified Fc+ T cells alone and up to 15-fold greater than that of Fc- T cells alone. It is suggested that the Fc T cells can be recruited into mitosis as a result of Con A stimulation of the Fc+ T cells.
D000818:Animals; D000936:Antigen-Antibody Complex; D001666:Binding Sites, Antibody; D002478:Cells, Cultured; D003208:Concanavalin A / Q000494:pharmacology; D005260:Female; D007141:Immunoglobulin Fc Fragments; D037102:Lectins / Q000494:pharmacology; D008070:Lipopolysaccharides / Q000494:pharmacology; D008213:Lymphocyte Activation; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D008934:Mitogens / Q000494:pharmacology*; D011947:Receptors, Antigen, B-Cell; D013154:Spleen / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*; D014357:Trypsin / Q000494:pharmacology
D000936:Antigen-Antibody Complex; D007141:Immunoglobulin Fc Fragments; D037102:Lectins; D008070:Lipopolysaccharides; D008934:Mitogens; D011947:Receptors, Antigen, B-Cell; D003208:Concanavalin A; D014357:Trypsin