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. 1992 Jul;89(1):148–153. doi: 10.1111/j.1365-2249.1992.tb06894.x

IL-6 enhances the generation of cytolytic T lymphocytes in the allogeneic mixed leucocyte reaction.

J E Ming 1, R M Steinman 1, A Granelli-Piperno 1
PMCID: PMC1554396  PMID: 1385765

Abstract

Cytolytic T lymphocytes (CTL) require soluble proteins termed lymphokines to develop lytic activity. In this report we have studied two of the lymphokines involved in the development of CTL during the allogeneic mixed leucocyte reaction (MLR). High doses of dendritic cells induced lytic activity from purified CD8+ cells in both the murine and human MLR. Under these conditions, IL-2 and IL-6 were endogenously produced and secreted. Antibodies to IL-2 or the IL-2 receptor blocked CTL formation; however, anti-IL-6 receptor antibodies only partially inhibited the response while anti-IL-6 antibodies were largely ineffective. When limiting numbers of antigen-presenting cells were used CTL failed to develop, and neither IL-2 nor IL-6 was secreted into the culture supernatant. Although the addition of IL-6 to such cultures was ineffective in generating CTL, the combination of IL-2 and IL-6 resulted in a 4-5-fold increase in lytic activity over that of IL-2 alone. We conclude that in the allogeneic MLR, IL-2 and IL-6 contribute to the generation of lytically active CD8+ cells, and the effect of IL-6 is evident when the dose of antigen-presenting cell is limited.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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