Release of histamine and arachidonate from mouse mast cells induced by glycosylation-enhancing factor and bradykinin

T. Ishizaka, M. Iwata, K. Ishizaka

Research output: Contribution to journalArticle

Abstract

Stimulation of normal rat splenic T cells with pertussigen (lymphocytosis-promoting factor from Bordetella pertussis) resulted in the release of a soluble factor that enhanced the assembly of N-linked oligosaccharides to IgE-binding factors during their biosynthesis. The glycosylation-enhancing factor (GEF) is a kallikrein-like enzyme and is purified by absorption to p-aminobenzamidine-Agarose followed by elution with benzamidine. Incubation of normal mouse mast cells with affinity-purified GEF or bradykinin, a product of cleavage of kininogen by kallikrein, resulted in the release of histamine and arachidonate from the cells. Passive sensitization of mast cells with mouse IgE antibody, followed by pretreatment of the cells with a suboptimal concentration of GEF, resulted in an enhancement of antigen-induced histamine release. It was found that GEF and bradykinin induced the same biochemical events in mast cells as those induced by bridging of IgE receptors. Both GEF and bradykinin induced phospholipid methylation and an increase in intracellular cyclic AMP (cAMP). Incorporation of 3H-methyl groups into phospholipids and intracellular cAMP levels both reached a maximum 30 sec after challenge with GEF or bradykinin, and then declined to base-line levels within 2 to 3 min. These biochemical events were followed by 45Ca influx and histamine release; 45Ca uptake reached a plateau value at 2 min, and histamine release reached a maximum at 5 to 8 min. The initial rise in cAMP induced by GEF (or bradykinin) was not inhibited by indomethacin, indicating that the activation of adenylate cyclase is not the result of prostaglandin synthesis. In both IgE-mediated and GEF-induced histamine release, inhibitors of methyltransferases, such as 3-deaza adenosine and L-homocysteine thiolactone, inhibited not only phospholipid methylation but also the cAMP rise and subsequent Ca2+ uptake and histamine release. The results indicate that GEF induces activation of methyltransferases and that phospholipid methylation is involved in the cAMP rise, Ca2+ uptake, and histamine release. The induction of the same biochemical events in the same sequence by bridging of IgE receptors and by GEF (bradykinin) supports the hypothesis that receptor bridging induces the activation of serine protease(s) and cleavage products of this enzyme in turn activate methyltransferases in mast cells.

Original languageEnglish (US)
Pages (from-to)1880-1887
Number of pages8
JournalJournal of Immunology
Volume134
Issue number3
StatePublished - 1985

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Histamine Release
Bradykinin
Mast Cells
Cyclic AMP
Methylation
IgE Receptors
Phospholipids
Kallikreins
Pertussis Toxin
Methyltransferases
Immunoglobulin E
Phosphatidyl-N-Methylethanolamine N-Methyltransferase
immunoglobulin-binding factors
Kininogens
Bordetella pertussis
Serine Proteases
Enzymes
Oligosaccharides
Adenylyl Cyclases
Indomethacin

ASJC Scopus subject areas

  • Immunology

Cite this

Release of histamine and arachidonate from mouse mast cells induced by glycosylation-enhancing factor and bradykinin. / Ishizaka, T.; Iwata, M.; Ishizaka, K.

In: Journal of Immunology, Vol. 134, No. 3, 1985, p. 1880-1887.

Research output: Contribution to journalArticle

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N2 - Stimulation of normal rat splenic T cells with pertussigen (lymphocytosis-promoting factor from Bordetella pertussis) resulted in the release of a soluble factor that enhanced the assembly of N-linked oligosaccharides to IgE-binding factors during their biosynthesis. The glycosylation-enhancing factor (GEF) is a kallikrein-like enzyme and is purified by absorption to p-aminobenzamidine-Agarose followed by elution with benzamidine. Incubation of normal mouse mast cells with affinity-purified GEF or bradykinin, a product of cleavage of kininogen by kallikrein, resulted in the release of histamine and arachidonate from the cells. Passive sensitization of mast cells with mouse IgE antibody, followed by pretreatment of the cells with a suboptimal concentration of GEF, resulted in an enhancement of antigen-induced histamine release. It was found that GEF and bradykinin induced the same biochemical events in mast cells as those induced by bridging of IgE receptors. Both GEF and bradykinin induced phospholipid methylation and an increase in intracellular cyclic AMP (cAMP). Incorporation of 3H-methyl groups into phospholipids and intracellular cAMP levels both reached a maximum 30 sec after challenge with GEF or bradykinin, and then declined to base-line levels within 2 to 3 min. These biochemical events were followed by 45Ca influx and histamine release; 45Ca uptake reached a plateau value at 2 min, and histamine release reached a maximum at 5 to 8 min. The initial rise in cAMP induced by GEF (or bradykinin) was not inhibited by indomethacin, indicating that the activation of adenylate cyclase is not the result of prostaglandin synthesis. In both IgE-mediated and GEF-induced histamine release, inhibitors of methyltransferases, such as 3-deaza adenosine and L-homocysteine thiolactone, inhibited not only phospholipid methylation but also the cAMP rise and subsequent Ca2+ uptake and histamine release. The results indicate that GEF induces activation of methyltransferases and that phospholipid methylation is involved in the cAMP rise, Ca2+ uptake, and histamine release. The induction of the same biochemical events in the same sequence by bridging of IgE receptors and by GEF (bradykinin) supports the hypothesis that receptor bridging induces the activation of serine protease(s) and cleavage products of this enzyme in turn activate methyltransferases in mast cells.

AB - Stimulation of normal rat splenic T cells with pertussigen (lymphocytosis-promoting factor from Bordetella pertussis) resulted in the release of a soluble factor that enhanced the assembly of N-linked oligosaccharides to IgE-binding factors during their biosynthesis. The glycosylation-enhancing factor (GEF) is a kallikrein-like enzyme and is purified by absorption to p-aminobenzamidine-Agarose followed by elution with benzamidine. Incubation of normal mouse mast cells with affinity-purified GEF or bradykinin, a product of cleavage of kininogen by kallikrein, resulted in the release of histamine and arachidonate from the cells. Passive sensitization of mast cells with mouse IgE antibody, followed by pretreatment of the cells with a suboptimal concentration of GEF, resulted in an enhancement of antigen-induced histamine release. It was found that GEF and bradykinin induced the same biochemical events in mast cells as those induced by bridging of IgE receptors. Both GEF and bradykinin induced phospholipid methylation and an increase in intracellular cyclic AMP (cAMP). Incorporation of 3H-methyl groups into phospholipids and intracellular cAMP levels both reached a maximum 30 sec after challenge with GEF or bradykinin, and then declined to base-line levels within 2 to 3 min. These biochemical events were followed by 45Ca influx and histamine release; 45Ca uptake reached a plateau value at 2 min, and histamine release reached a maximum at 5 to 8 min. The initial rise in cAMP induced by GEF (or bradykinin) was not inhibited by indomethacin, indicating that the activation of adenylate cyclase is not the result of prostaglandin synthesis. In both IgE-mediated and GEF-induced histamine release, inhibitors of methyltransferases, such as 3-deaza adenosine and L-homocysteine thiolactone, inhibited not only phospholipid methylation but also the cAMP rise and subsequent Ca2+ uptake and histamine release. The results indicate that GEF induces activation of methyltransferases and that phospholipid methylation is involved in the cAMP rise, Ca2+ uptake, and histamine release. The induction of the same biochemical events in the same sequence by bridging of IgE receptors and by GEF (bradykinin) supports the hypothesis that receptor bridging induces the activation of serine protease(s) and cleavage products of this enzyme in turn activate methyltransferases in mast cells.

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