Abstract
Experiments were performed to examine whether the concanavalin A (Con A)- induced suppressor cells of several in vitro T- and B-lymphocyte functions constitute a functionally unique cell population. This study included simultaneous studies of three different assays of suppression of T- and B-lymphocyte functions. We found that Con-A-induced suppressor cells which inhibit the allogeneic mixed lymphocyte reaction (MLR) and the pokeweed mitogen-induced, plaque-forming cell (PEC) response are radiation sensitive at doses greater than 1000 rad, but corticosteroid resistant, while those suppressing allogeneic cell-mediated lympholysis (CML) are both radiation and corticosteroid resistant. These studies indicate either that Con-A-induced suppressor cells include heterogeneous populations which are differentially sensitive to corticosteroids and radiation, or that functionally distinct suppressor mechanisms are variably sensitive to these agents.
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Selected References
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- Birnbaum G., Swick L. Human suppressor lymphocytes. I. Induction and characterization. Cell Immunol. 1978 Sep 15;40(1):16–27. doi: 10.1016/0008-8749(78)90311-8. [DOI] [PubMed] [Google Scholar]
- Dutton R. W. Suppressor T cells. Transplant Rev. 1975;26:39–55. doi: 10.1111/j.1600-065x.1975.tb00174.x. [DOI] [PubMed] [Google Scholar]
- Farrar W. L., Johnson H. M., Farrar J. J. Regulation of the production of immune interferon and cytotoxic T lymphocytes by interleukin 2. J Immunol. 1981 Mar;126(3):1120–1125. [PubMed] [Google Scholar]
- Fineman S. M., Mudawwar F. B., Geha R. S. Characteristics and mechanisms of action of the concanavalin A-activated suppressor cell in man. Cell Immunol. 1979 Jun;45(1):120–132. doi: 10.1016/0008-8749(79)90367-8. [DOI] [PubMed] [Google Scholar]
- Ginsburg W. W., Finkelman F. D., Lipsky P. E. Circulating and mitogen-induced immunoglobulin-secreting cells in human peripheral blood: evaluation by a modified reverse hemolytic plaque assay. J Immunol. 1978 Jan;120(1):33–39. [PubMed] [Google Scholar]
- Gronowicz E., Coutinho A., Melchers F. A plaque assay for all cells secreting Ig of a given type or class. Eur J Immunol. 1976 Aug;6(8):588–590. doi: 10.1002/eji.1830060812. [DOI] [PubMed] [Google Scholar]
- Hallgren H. M., Yunis E. J. Suppressor lymphocytes in young and aged humans. J Immunol. 1977 Jun;118(6):2004–2008. [PubMed] [Google Scholar]
- Haynes B. F., Fauci A. S. Activation of human B lymphocytes. III. Concanavalin A-induced generation of suppressor cells of the plaque-forming cell response of normal human B lymphocytes. J Immunol. 1977 Jun;118(6):2281–2287. [PubMed] [Google Scholar]
- Haynes B. F., Fauci A. S. Mechanisms of corticosteroid action on lymphocyte subpopulations. IV. Effects of in vitro hydrocortisone on naturally occuring and mitogen-induced suppressor cells in man. Cell Immunol. 1979 Apr;44(1):157–168. doi: 10.1016/0008-8749(79)90036-4. [DOI] [PubMed] [Google Scholar]
- Hunninghake G. W., Fauci A. S. Lymphocyte-mediated cytotoxicity against human allogeneic and autologous lymphoid targets after concanavalin A-activation of cytotoxic effector cells. J Immunol. 1977 Sep;119(3):1122–1128. [PubMed] [Google Scholar]
- Hunninghake G. W., Fauci A. S. Suppression of the generation of human con A-induced cytotoxic effector cells by con A-activated suppressor cells. J Immunol. 1978 Jun;120(6):1828–1831. [PubMed] [Google Scholar]
- Kaufman D. B., Carnaud C., Stach J. L., Bach J. F. The suppressive effect of a supernate from concanavalin A-activated human lymphocytes: effects of concanavalin A-activated lymphocytes and their supernates on cytotoxic and mixed lymphocyte reactions. Cell Immunol. 1979 Sep 15;47(1):153–162. doi: 10.1016/0008-8749(79)90323-x. [DOI] [PubMed] [Google Scholar]
- Lobo P. I., Spencer C. E. Inhibition of humoral and cell-mediated immune responses in man by distinct suppressor cell systems. J Clin Invest. 1979 Jun;63(6):1157–1163. doi: 10.1172/JCI109409. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Mosier D. E., Mathieson B. J., Campbell P. S. Ly phenotype and mechanism of action of mouse neonatal suppressor T cells. J Exp Med. 1977 Jul 1;146(1):59–73. doi: 10.1084/jem.146.1.59. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Peavy D. L., Pierce C. W. Cell-mediated immune responses in vitro. I. Suppression of the generation of cytotoxic lymphocytes by concanavalin A and concanavalin A-activated spleen cells. J Exp Med. 1974 Aug 1;140(2):356–369. doi: 10.1084/jem.140.2.356. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Pickel K., Hoffmann M. K. The Ly phenotype of suppressor T cells arising in mice subjected to a graft-versus-host reaction. J Exp Med. 1977 May 1;145(5):1169–1175. doi: 10.1084/jem.145.5.1169. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Ramshaw I. A., McKenzie I. F., Bretscher P. A., Parish C. R. Discrimination of suppressor T cells of humoral and cell-mediated immunity by anti-Ly and anti-Ia sera. Cell Immunol. 1977 Jun 15;31(2):364–369. doi: 10.1016/0008-8749(77)90038-7. [DOI] [PubMed] [Google Scholar]
- Randazzo B., Pfeffer P., Hirschberg T., Hirschberg H. Opposing effects of methylprednisolone on in vitro alloantigen-induced cytotoxic and suppressor lymphocytes in man. J Clin Lab Immunol. 1980 Nov;4(3):175–180. [PubMed] [Google Scholar]
- Shou L., Schwartz S. A., Good R. A. Suppressor cell activity after concanavalin A treatment of lymphocytes from normal donors. J Exp Med. 1976 May 1;143(5):1100–1110. doi: 10.1084/jem.143.5.1100. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tsokos G. C., Balow J. E. Spontaneous and pokeweed mitogen-induced plaque-forming cells in systemic lupus erythematosus. Clin Immunol Immunopathol. 1981 Nov;21(2):172–183. doi: 10.1016/0090-1229(81)90206-3. [DOI] [PubMed] [Google Scholar]
- Waldmann T. A., Broder S. Suppressor cells in the regulation of the immune response. Prog Clin Immunol. 1977;3:155–199. [PubMed] [Google Scholar]
- Whisler R. L., Stobo J. D. Suppression of humoral and delayed hypersensitivity responses by distinct T cell subpopulations. J Immunol. 1978 Aug;121(2):539–542. [PubMed] [Google Scholar]
