phorbol-12-13-didecanoate and 5-12-20-trihydroxy-6-8-10-14-eicosatetraenoic-acid

Following its addition to a suspension of rabbit neutrophils, leukotriene B4 is rapidly (less than 1 min) recovered from the cytoskeletal fraction (Triton X-100 insoluble pellet) of these cells. The association of leukotriene B4 with the cytoskeleton can be competed with by leukotriene B4 itself and by 20-OH leukotriene B4 but not by 20-COOH leukotriene B4. In addition, the preincubation of the cells with fMet-Leu-Phe or with phorbol 12-myristate 13-acetate, but not with 4 alpha-phorbol 12,13-didecanoate, results in a greatly decreased association of leukotriene B4 with the cytoskeleton. These results suggest that a specific association between the leukotriene B4 receptors and the cytoskeleton may be involved in signal transduction in the leukotriene B4 stimulated neutrophils.

Topics: Animals; Cytoskeleton; Hydroxyeicosatetraenoic Acids; Leukotriene B4; N-Formylmethionine Leucyl-Phenylalanine; Neutrophils; Phorbol Esters; Phorbols; Rabbits; Tetradecanoylphorbol Acetate