Stimulation of 14-3-3 protein and its isoform on histamine secretion from permeabilized rat peritoneal mast cells.
The effect of the 14-3-3 protein, an adaptor protein of intracellular signal pathways, on histamine release from rat peritoneal mast cells was investigated. The exogenous 14-3-3 protein from bovine brain increased the Ca(2+)-dependent histamine release from permeabilized mast cells, but only slightly affected the non-permeabilized cells. Partial amino acid sequences showed that the bovine brain 14-3-3 protein contained 14-3-3beta, gamma and zeta isoforms, and that these recombinant isoforms were prepared. Among them, 14-3-3zeta was an active species while the 14-3-3beta and gamma were inactive for histamine release from the permeabilized mast cells. Approximately 15% of the histamine release was stimulated by 14-3-3zeta at 2.5 microM, and half-maximal stimulation occurred at 1 microM. Treatment of the mast cells with wortmannin or staurosporine completely inhibited the stimulatory effect on histamine release caused by Ca(2+) or Ca(2+)/14-3-3zeta, and genistein partially inhibited both stimulatory effects. PD 98059, however, had little effect on the histamine release. These results suggest the possibility that 14-3-3zeta is associated with signal transduction for degranulation of the mast cells.
Fujii
Toshihiro
T
Department of Kansei Engineering, Faculty of Textile Science and Technology, Shinshu University, Ueda, Nagano, Japan. fujiit1@giptc.shinshu-u.ac.jp
Ueeda
Takayuki
T
D048948:14-3-3 Proteins; D000818:Animals; D002417:Cattle; D006636:Histamine Release / Q000187:drug effects* / Q000502:physiology; D008297:Male; D008407:Mast Cells / Q000187:drug effects* / Q000378:metabolism; D010529:Peritoneal Cavity / Q000166:cytology; D010539:Permeability / Q000187:drug effects; D020033:Protein Isoforms / Q000494:pharmacology; D051381:Rats; D017208:Rats, Wistar; D014446:Tyrosine 3-Monooxygenase / Q000494:pharmacology*
D048948:14-3-3 Proteins; D020033:Protein Isoforms; D014446:Tyrosine 3-Monooxygenase