國家衛生研究院 NHRI:Item 3990099045/9694
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    题名: Benzopyrene, a major polyaromatic hydrocarbon in smoke fume, mobilizes Langerhans cells and polarizes Th2/17 responses in epicutaneous protein sensitization through the aryl hydrocarbon receptor
    作者: Hong, CH;Lee, CH;Yu, HS;Huang, SK
    贡献者: National Institute of Environmental Health Sciences
    摘要: BACKGROUND: Atopic dermatitis (AD) is a common disease with genetic and environmental interactions. We previously reported lifetime exposure to cigarette smoke is associated with adult-onset AD. Aryl hydrocarbon receptor (AhR) is important in regulating environmental exposure to xenobiotics, including benzopyrenes (BP), a major polycyclic aromatic hydrocarbon (PAH) present in cigarette smoke. However, how AhR regulates immune responses in sensitization phase of AD remained elusive. METHODS: We investigated how BP affects epicutaneous sensitization response through AhR axis. We compared AhR expression in skin from AD patients and healthy controls. We measured immune responses (Langerhans cell migration and T cell polarization in epicutaneous Ova sensitization in mice with or without AhR defect. RESULTS: We found AhR and ARNT (AhR nuclear translocator) are upregulated in AD skin. BP exposure increases Langerhans cell migration, and increases IL-5, IL-13, and IL-17 levels when lymph node cells were re-challenged with Ova. The increased cytokine levels were attenuated in AhR defected mice. AhR agonists (BP and ITE) decreased E-cadherin expression, while AhR antagonist (CH223191) increased it in human primary keratinocytes. CONCLUSIONS: These results suggested AhR interacts with BP to polarize T cell responses, along with Langerhans cell migration. This study revealed a regulatory mechanism how cigarette smoking affects atopic sensitization through the benzopyrene-AhR interaction.
    日期: 2016-07
    關聯: International Immunopharmacology. 2016 Jul;36:111-117.
    Link to: http://dx.doi.org/10.1016/j.intimp.2016.04.017
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1567-5769&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000378453300015
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84964253032
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