T helper type 2-biased natural killer cell phenotype in patients with pemphigus vulgaris

Hayato Takahashi, Masayuki Amagai, Akiko Tanikawa, Shigeaki Suzuki, Yasuo Ikeda, Takeji Nishikawa, Yutaka Kawakami, Masataka Kuwana

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Pemphigus vulgaris (PV) is an autoantibody-mediated bullous disease, but the role of natural killer (NK) cells in its pathogenic process has never been examined in detail. Circulating CD56+CD3- NK cells as well as CD69+-activated NK cells were increased in PV patients compared with healthy controls and patients with other autoantibody-mediated autoimmune diseases, including immune thrombocytopenic purpura and myasthenia gravis. Gene expression analysis of highly purified NK cells demonstrated an increased expression of IL-10 and decreased expression of IL-12Rβ2, perforin, and granzyme B ex vivo in PV patients versus healthy controls. The NK cells from PV patients also showed impaired signal transducer and activator of transduction4 phosphorylation upon in vitro IL-12 stimulation. Moreover, NK cells from PV patients exhibited reduced IL-10 production in response to in vitro stimulation with IL-2/IL-12. Finally, IL-5 expression in NK cells was exclusively detected ex vivo in PV patients with active disease, and was lost in subsequent analyses performed during disease remission. Together these findings suggest that NK cells contribute to a T helper type 2-biased immune response in PV patients through impaired IL-12 signaling and an upregulation of IL-10 and IL-5.

Original languageEnglish
Pages (from-to)324-330
Number of pages7
JournalJournal of Investigative Dermatology
Volume127
Issue number2
DOIs
Publication statusPublished - 2007 Feb

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Pemphigus
Natural Killer Cells
Interleukin-12
Interleukin-10
Phenotype
Interleukin-5
Autoantibodies
Phosphorylation
Gene expression
Interleukin-2
Transducers
Idiopathic Thrombocytopenic Purpura
Myasthenia Gravis
Autoimmune Diseases
Up-Regulation
Gene Expression

ASJC Scopus subject areas

  • Dermatology

Cite this

T helper type 2-biased natural killer cell phenotype in patients with pemphigus vulgaris. / Takahashi, Hayato; Amagai, Masayuki; Tanikawa, Akiko; Suzuki, Shigeaki; Ikeda, Yasuo; Nishikawa, Takeji; Kawakami, Yutaka; Kuwana, Masataka.

In: Journal of Investigative Dermatology, Vol. 127, No. 2, 02.2007, p. 324-330.

Research output: Contribution to journalArticle

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