Suppression of immune cell function in vitro by recombinant human transforming growth factor-beta
- PMID: 2965617
- DOI: 10.1016/0008-8749(88)90303-6
Suppression of immune cell function in vitro by recombinant human transforming growth factor-beta
Abstract
The influence of recombinant human transforming growth factor-beta (rHuTGF-beta) on B-cell function and antigen-specific T-cell responses in vitro was investigated. The addition of 0.1 ng/ml of rHuTGF-beta to cultures of peripheral blood mononuclear cells (PBMC) stimulated with tetanus toxoid resulted in a 50% inhibition of the PBMC proliferative response as determined by [3H]thymidine incorporation. Further, rHuTGF-beta at 0.37 ng/ml caused a greater than 50% reduction in the number of immunoglobulin G-secreting cells among PBMC induced by pokeweed mitogen. rHuTGF-beta also inhibited the generation of allospecific cytotoxic T lymphocytes (CTL) in the mixed-lymphocyte reaction but had no effect on the cytolytic function of CTL generated in the absence of exogenous HuTGF-beta. The results indicate additional immunoregulatory activities for HuTGF-beta and suggest that this factor may play an important role in the regulation of the antigen-dependent immune response.
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