The role of dendritic cells in asthma

被引:46
作者
Holt, Patrick G.
Upham, John W.
机构
[1] Univ Western Australia, Fac Med & Dent, Telethon Inst Child Hlth Res, Perth, WA, Australia
[2] Univ Western Australia, Fac Med & Dent, Ctr Child Hlth Res, Perth, WA, Australia
关键词
antigen presenting cells; dendritic cells; asthma; allergy; immune tolerance;
D O I
10.1097/01.all.0000113677.18759.dc
中图分类号
R392 [医学免疫学];
学科分类号
100102 ;
摘要
Purpose of review The central importance of respiratory tract dendritic cells in the regulation of adaptive immune responses to inhaled antigens is now well established. Dendritic cells are not merely a conduit for the transfer of antigen to regional lymph nodes, but rather function as a sophisticated information transfer system linking the airway micro-environment to the adaptive immune system. Evidence from both animal models and clinical studies points to a critical role for dendritic cells in both allergic sensitization and the pathogenesis of chronic airway inflammation. Recent findings This article reviews recent information on the distribution and function of dendritic cells in healthy individuals, the responsiveness of these cells to external stimuli, and the factors regulating their activation and turnover within the lung. Animal models of allergic airway inflammation continue to shed new light on the role of lung dendritic cells in T helper 1/T helper 2 switching, and the ability of these cells to direct regulatory T-cell development and immune tolerance. Recent studies have further characterized circulating dendritic cell populations, highlighting important functional differences between dendritic cells from atopic and nonatopic individuals, and have delineated the involvement of these cells in the late phase response to inhaled allergen. Summary Because of the immunoregulatory properties of dendritic cells, the future is likely to see a concerted effort to further define the role that these cells play in allergic sensitization, as a basis for the development of new treatments for asthma and other atopic disorders.
引用
收藏
页码:39 / 44
页数:6
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