title: Genistein, a selective protein tyrosine kinase inhibitor, inhibits interleukin-2 and leukotriene B4 production from human mononuclear cells.
abstract: In this study, genistein, a selective protein tyrosine kinase (PTK) inhibitor, inhibited peripheral blood mononuclear cell (PBMC) proliferation and interleukin-2 production from cultures that were stimulated with phytohemagglutinin (PHA), phorbol 12-myristate 13-acetate (PMA) plus A23187, or PHA plus PMA, and genistein effectively blocked the PHA plus IL-2-induced PBMC proliferation. Further, we also found that genistein inhibited LTB4 production from A23187-stimulated cultures whereas H-7, a PKC inhibitor, had no effect on LTB4 production. Our results suggest that PTK may be necessary for the synthesis of LTB4.
authors.affiliation: Department of Medicine, Hennepin County Medical Center, Minneapolis, Minnesota 55415.
authors.forename: D
authors.initials: D
authors.lastname: Atluru
authors.forename: T M
authors.initials: TM
authors.lastname: Jackson
authors.forename: S
authors.initials: S
authors.lastname: Atluru
mesh_terms: D000001:Calcimycin / Q000494:pharmacology; D002478:Cells, Cultured; D019833:Genistein; D006801:Humans; D007376:Interleukin-2 / Q000096:biosynthesis*; D007529:Isoflavones / Q000494:pharmacology*; D007963:Leukocytes, Mononuclear / Q000187:drug effects* / Q000378:metabolism; D007975:Leukotriene B4 / Q000096:biosynthesis*; D008213:Lymphocyte Activation / Q000187:drug effects; D010835:Phytohemagglutinins / Q000494:pharmacology; D011505:Protein-Tyrosine Kinases / Q000037:antagonists & inhibitors*; D011948:Receptors, Antigen, T-Cell / Q000378:metabolism; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology
chemical_list: D007376:Interleukin-2; D007529:Isoflavones; D010835:Phytohemagglutinins; D011948:Receptors, Antigen, T-Cell; D007975:Leukotriene B4; D000001:Calcimycin; D019833:Genistein; D011505:Protein-Tyrosine Kinases; D013755:Tetradecanoylphorbol Acetate