Genetic impact of a butyrophilin-like 2 (BTNL2) gene variation on specific IgE responsiveness to dermatophagoides farinae (Der f) in Japanese

Satoshi Konno, Daisuke Takahashi, Nobuyuki Hizawa, Takeshi Hattori, Ayumu Takahashi, Akira Isada, Yukiko Maeda, Shau Ku Huang, Masaharu Nishimura

研究成果: 雜誌貢獻文章同行評審

10 引文 斯高帕斯(Scopus)

摘要

Background: Dermatophagoides farinae (Der f) is one of the most frequently implicated allergens in several allergic diseases. Several genome-wide screens have identified a linkage between chromosome 6p21 and mite-specific IgE responsiveness. Butyrophilin-like 2 (BTNL2) is a member of the immunoglobulin superfamily and, on the basis of its homology to B7-1, has been implicated as a costimulatory molecule involved in T-cell activation. BTNL2 resides in the HLA region on chromosome 6p21, and significant associations between BTNL2 gene polymorphisms and several inflammatory diseases have been reported. Objective: The aim of this study was to examine whether BTNL2 gene polymorphisms are associated with specific IgE responses to Der f. Methods: Three single nucleotide polymorphisms (SNPs), including 2 coding SNPs and 1 intron SNP, were studied. One of the coding SNPs was the rs2076530 A > G, which has a functional consequence. A total of 863 unrelated Japanese subjects (447 positive and 416 negative for IgE to Der f) were recruited for a case-control study. Results: Controlling for gender, age, smoking, and the presence of asthma, multiple logistic regression analyses showed that homozygosity of the rs2076530 A allele, which has been reported to be a risk allele for sarcoidosis, was associated with a risk of sensitization towards Der f (Odds ratio; 1.55, p = 0.0060). Conclusions: Although an association which may be due to the linkage disequilibrium with other genes in 6p 21 needs to be ruled out, the present findings suggest that the BTNL2 gene might be one of the candidate genes that is responsible for the pathogenesis of Der f-specific IgE responsiveness.

原文英語
頁(從 - 到)29-35
頁數7
期刊Allergology International
58
發行號1
DOIs
出版狀態已發佈 - 一月 1 2009
對外發佈Yes

ASJC Scopus subject areas

  • Immunology and Allergy

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