Histamine H4 receptor agonists have more activities than H4 agonism in antigen-specific human T-cell responses

Yuji Sugata, Mitsuhiro Okano, Tazuko Fujiwara, Rie Matsumoto, Hisashi Hattori, Miki Yamamoto, Masahiro Nishibori, Kazunori Nishizaki

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Histamine not only mediates immediate allergic reactions, it also regulates cellular immune responses. H4R is the most recently identified histamine receptor (HR). In the present study, we examined the in vitro effect of histamine and H4R agonists on the responses of human T cells to purified protein derivative from Mycobacterium tuberculosis (PPD) and to Cry j1, the major allergen of Cryptomeria japonica pollen. Dimaprit, clobenpropit and clozapine, which are H4R agonists, dose-dependently blocked both PPD-induced interferon-γ and Cry j1-induced interleukin-5 production by both peripheral blood mononuclear cells (PBMCs) and antigen-specific T-cell lines. However, the addition of thioperamide, an H3R/H4R antagonist, as well as a mixture of d-chlropheniramine, famotidine and thioperamide, did not reverse the inhibition. Pretreatment of PBMCs with SQ22536 and 8-bromoadenosine-3′, 5′-cyclic monophosphorothioate, Rp-isomer, had varying abilities to reverse the inhibitory effects of H4R agonists, except for clobenpropit. Moreover, the addition of H4R agonists induced annexin-V expression on PBMCs, especially in CD19+ and CD4+ cells. cDNA microarray analysis revealed that, among 16 600 genes tested, increased expression following treatment with clozapine was seen in 0.8% of the genes, whereas decreased expression was seen in 3.0% of the genes. These results suggest that H4R agonists inhibit antigen-specific human T-cell responses, although H4R does not appear to be important for this effect. In addition, the present study indicated that there may be orphan receptors or HR subtypes which can bind dimaprit, clobenpropit and clozapine, and that can exert an inhibitory effect on antigen-specific cellular responses via a cAMP/cAMP-dependent protein kinase-dependent, apoptotic pathway.

Original languageEnglish
Pages (from-to)266-275
Number of pages10
JournalImmunology
Volume121
Issue number2
DOIs
Publication statusPublished - Jun 2007

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thioperamide
Histamine Receptors
Clozapine
Dimaprit
Blood Cells
Tuberculin
T-Lymphocytes
Antigens
Cryptomeria
Histamine Agonists
Genes
Famotidine
Annexin A5
Interleukin-5
Microarray Analysis
Pollen
Cyclic AMP-Dependent Protein Kinases
Oligonucleotide Array Sequence Analysis
Mycobacterium tuberculosis
Cellular Immunity

Keywords

  • Cytokine
  • H4R
  • Histamine
  • Human studies
  • T cell

ASJC Scopus subject areas

  • Immunology

Cite this

Histamine H4 receptor agonists have more activities than H4 agonism in antigen-specific human T-cell responses. / Sugata, Yuji; Okano, Mitsuhiro; Fujiwara, Tazuko; Matsumoto, Rie; Hattori, Hisashi; Yamamoto, Miki; Nishibori, Masahiro; Nishizaki, Kazunori.

In: Immunology, Vol. 121, No. 2, 06.2007, p. 266-275.

Research output: Contribution to journalArticle

Sugata, Yuji ; Okano, Mitsuhiro ; Fujiwara, Tazuko ; Matsumoto, Rie ; Hattori, Hisashi ; Yamamoto, Miki ; Nishibori, Masahiro ; Nishizaki, Kazunori. / Histamine H4 receptor agonists have more activities than H4 agonism in antigen-specific human T-cell responses. In: Immunology. 2007 ; Vol. 121, No. 2. pp. 266-275.
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