Importance of AhR for the cellular function and communication of dendritic cells

描述（由申请人提供）：本提案的总体目标是确定芳烃受体（AhR）与NF-？B信号在控制树突状细胞（DC）功能和分化中的作用。DC细胞与T细胞通讯的改变可导致自身免疫性疾病、过敏和免疫缺陷等免疫紊乱。尤其是AhR与NF-？B RelB介导的途径对适当的免疫反应至关重要，将是本研究的重点。dc是免疫或耐受的关键调节因子，NF-？B成员RelA和RelB对DC的发育、分化和功能起着至关重要的作用。因此，AhR可能与NF-？B - Rel蛋白调节dc的功能，在特定病理条件下通过NF-?激活影响T细胞分化B和AhR。本研究可为暴露于二恶英及二恶英样化合物等持久性有机污染物激活AhR与基于其免疫毒性作用的疾病发展之间的明确联系和机制提供依据。这将允许更明确定义的终点来评估AhR激活化合物的影响，也可能为开发可用于操纵免疫系统的新物质提供机会，并允许实施有效的预防措施。

DESCRIPTION (provided by applicant): The overall goal of this proposal is to identify the regulatory role of the aryl hydrocarbon receptor (AhR) interacting with NF-?B signaling in controlling function and differentiation of dendritic cells (DC). Alteration of cellular communication of DC with T cells can lead to immunological disorders like autoimmune diseases, allergy and immunodeficiency. Especially interaction of the AhR with NF-?B RelB mediated pathways critical for appropriate immune responses will be the focus of this study. DCs are key regulator of immunity or tolerance, and the NF-?B members RelA and RelB are critical for the development, differentiation and function of DC. Therefore, the AhR may interact with NF-?B Rel proteins to regulate the function of DCs, which affects T cell differentiation in particular pathological conditions mediated by activation of NF-?B and AhR. This study can provide a definite link and mechanism between the exposure to persistent organic pollutants like dioxin and dioxin-like compounds activating the AhR and the development of diseases based on their immunotoxic effects. This will allow for more clearly defined endpoints to assess the effects of AhR activating compounds and may also provide opportunities to develop new substances that can then be used to manipulate the immune system and allow for effective preventative measures to be implemented.