CC chemokines induce the generation of killer cells from CD56+ cells
- PMID: 8617297
- DOI: 10.1002/eji.1830260207
CC chemokines induce the generation of killer cells from CD56+ cells
Abstract
We describe here that members of the CC chemokines exhibit biological activities other than chemotaxis. Macrophage inflammatory protein (MIP)-1 alpha, MIP-1 beta, monocyte chemoattractant protein-1 and RANTES, but not interleukin (IL)-8, induce the generation of cytolytic cells, designated here as CHAK (CC chemokine-activated killer) cells to distinguish them from IL-2-activated (LAK) cells. Like IL-2, CC chemokines can induce the proliferation and activation of killer cells. While incubating CC chemokines with CD4+ or CD8+ cells did not generate CHAK activity, all CC chemokines were capable of inducing CHAK activity upon incubating with CD56+ cells, suggesting that the primary effectors are NK cells. However, the presence of other cell types, such as CD4+ or CD8+, are necessary to induce the proliferation of CD56+ cells. Confirming the involvement of T cell-derived factors in inducing the proliferation of these cells, anti-IL-2 and anti-interferon-gamma, but not anti-IL-1 beta, anti-tumor necrosis factor-alpha, anti-IL-8, or anti-granulocyte/monocyte-colony-stimulating factor inhibited RANTES-induced proliferation of nylon wool column-nonadherent cells. Our results may have important clinical applications for the utilization of CHAK cells in the treatment of cancer and immunodeficient patients.
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