title: The AKR thymoma BW5147 is able to produce lymphokines when stimulated with calcium ionophore and phorbol ester.
abstract: We produced the T cell hybridoma D9C1.12.17 by fusing an IL-4-producing T cell clone D9.1Hi with the AKR thymoma BW5147. The resulting hybridoma produced IL-2 as well as IL-4 even though none of the parental cells produced IL-2 after stimulation with Con A. The production of IL-2 was confirmed at the mRNA level by using an S1 nuclease protection assay. Further analysis indicated that Con A-induced IL-2 production was a common phenomenon among T cell hybridomas derived from this fusion. Although BW5147 does not produce detectable lymphokines after Con A stimulation, this line was able to produce IL-2, granulocyte-macrophage colony stimulating factor, and small amounts of IL-3 and IFN-gamma when stimulated with calcium ionophore and phorbol ester. The latter agents are thought to mimic the activating signal(s) delivered through the Ag:MHC TCR. This observation indicates that BW5147 has the ability to produce lymphokines but may lack component(s) which couple the extracellular signal to lymphokine production, and suggests that in T cell hybridomas, part of the spectrum of lymphokines produced may be contributed by BW5147.
mesh_terms: D000818:Animals; D000001:Calcimycin / Q000494:pharmacology*; D002459:Cell Fusion; D002460:Cell Line; D003115:Colony-Stimulating Factors / Q000096:biosynthesis; D016178:Granulocyte-Macrophage Colony-Stimulating Factor; D006133:Growth Substances / Q000096:biosynthesis; D006825:Hybridomas / Q000187:drug effects / Q000276:immunology / Q000378:metabolism; D007371:Interferon-gamma / Q000096:biosynthesis; D007376:Interleukin-2 / Q000096:biosynthesis; D007377:Interleukin-3 / Q000096:biosynthesis; D008222:Lymphokines / Q000096:biosynthesis*; D051379:Mice; D008806:Mice, Inbred AKR; D013601:T-Lymphocytes / Q000187:drug effects / Q000276:immunology / Q000378:metabolism; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology*; D013945:Thymoma / Q000276:immunology / Q000378:metabolism*; D014407:Tumor Cells, Cultured / Q000187:drug effects / Q000276:immunology / Q000378:metabolism*
chemical_list: D003115:Colony-Stimulating Factors; D006133:Growth Substances; D007376:Interleukin-2; D007377:Interleukin-3; D008222:Lymphokines; D000001:Calcimycin; D007371:Interferon-gamma; D016178:Granulocyte-Macrophage Colony-Stimulating Factor; D013755:Tetradecanoylphorbol Acetate