title: The effect of lentinan on production of interleukin-1 by human monocytes.
abstract: Activated human monocytes produce a monokine, interleukin-1 (IL-1) which can amplify the immune response by inducing antigen specific T cells to elaborate T cell growth factor, or interleukin-2, which in turn causes T cells to proliferate. The immune adjuvant lentinan has been shown in this study to augment IL-1 production by human monocytes. Stimulation of IL-1 by lentinan was seen as early as 5 hr, with some effect as late as 60 hr. Optimal effects were seen with very low concentrations, around 0.1 micrograms/ml. Lentinan was also able to stimulate IL-1 production by the leukemic cell line, K-562. The data reported here suggest that the previously reported adjuvant effects of lentinan may in part be mediated via its ability to stimulate IL-1 production.
mesh_terms: D000276:Adjuvants, Immunologic / Q000494:pharmacology*; D000818:Animals; D002471:Cell Transformation, Neoplastic / Q000187:drug effects; D006801:Humans; D007375:Interleukin-1 / Q000096:biosynthesis*; D007912:Lentinan / Q000494:pharmacology*; D007951:Leukemia, Myeloid / Q000276:immunology / Q000378:metabolism; D008213:Lymphocyte Activation / Q000187:drug effects; D051379:Mice; D008809:Mice, Inbred C3H; D009000:Monocytes / Q000378:metabolism*; D010835:Phytohemagglutinins / Q000494:pharmacology; D011134:Polysaccharides / Q000494:pharmacology*; D013601:T-Lymphocytes / Q000276:immunology; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology
chemical_list: D000276:Adjuvants, Immunologic; D007375:Interleukin-1; D010835:Phytohemagglutinins; D011134:Polysaccharides; D007912:Lentinan; D013755:Tetradecanoylphorbol Acetate