alexa Dust Mite Allergen Der F 8 Promotes Th2 Polarization via Modulating Chromatin Structure at the TIM4 Gene Locus in Dendritic Cells | OMICS International
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Research Article

Dust Mite Allergen Der F 8 Promotes Th2 Polarization via Modulating Chromatin Structure at the TIM4 Gene Locus in Dendritic Cells

Mo LH1, Yang LT1,2,3, Zeng L1, Xu LZ1, Zhang HP3, Li LJ3, Liu JQ1,2,3, Xiao XJ1, Liu ZG1* and Yang PC*1,3

1Center of Allergy & Immunology, Shenzhen University School of Medicine, Shenzhen, 518060, China

2ENT Hospital, Longgang Central Hospital, Shenzhen, 518116, China

3Department of Pathology & Molecular Medicine, McMaster University, Hamilton, ON L8N 3Z5, Canada

*Corresponding Author:
Ping-Chang Yang
Center of Allergy & Immunology
Shenzhen University School of Medicine
Shenzhen, 518060, China
Tel: 86-755-26536108,
E-mail: [email protected]
 
Zhi-Gang Liu
Center of Allergy & Immunology
Shenzhen University School of Medicine,
Shenzhen, 518060, China
E-mail: [email protected]

Received date: March 26, 2016; Accepted date: April 28, 2016; Published date: May 02, 2016

Citation: Mo LH, Yang LT, Zeng L, Xu LZ, Zhang HP, et al. (2016) Dust Mite Allergen Der F 8 Promotes Th2 Polarization via Modulating Chromatin Structure at the TIM4 Gene Locus in Dendritic Cells. Immunome Res 12: 113. doi:10.4172/1745-7580.10000113

Copyright: © 2016 Mo LH, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Dust mites are an important source of allergens. The mechanism by which dust mite allergens induce allergic diseases is to be further investigated. This study aims to elucidate the role of one of the components of dust mite allergens, the Dermatophagoides farinae-8 (Der f 8), in the induction of airway allergy. In this study, the expression of T cell immunoglobulin and mucin domain 4 (TIM4) in dendritic cells (DC) s was analyzed after stimulating with Der f 8 in the culture. The role of Der f 8 in the induction of T helper (Th) 2 inflammation was assessed with an airway allergy mouse model. We observed that, in 34 subtypes of dust mite allergens, Der f 8 uniquely and markedly induced high levels of the TIM4 expression in DCs by modulating the chromatin at the TIM4 promoter locus. Der f 8 played a critical role in the expansion of the Th2 response in the mouse airway via inducing DCs to produce TIM4. Administration with Der f 8-null dust mite extracts (DME) efficiently inhibited the allergic inflammation and induced regulatory T cells in the airway of mice. We conclude that Der f 8 plays an important role in the pathogenesis of dust mite allergy. Vaccination with the Der f 8-null DME is more efficient to inhibit the dust mite allergic inflammation in the airway than the wild DME.

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