树突状细胞在炎症性肠病中的作用

Role of dendritic cells in inflammatory bowel diseases

炎症性肠病可能是遗传和环境因素共同作用导致肠道黏膜对肠道正常菌群免疫反应失常而引起的慢性非特异性炎症。树突状细胞在抗原富集的肠道环境中起着调节免疫应答的重要作用，既能启动免疫应答，又能诱导免疫耐受。这种调节功能缺陷可能导致炎症性肠病。本文就相关方面的研究进展进行综述。

Inflammatory bowel diseases （IBD） possibly lie in a dysregulated response of the intestinal mucosal immune system towards intestinal microflora under a combined action of genetic and environmental factors. Mucosal dendritic cells are assumed to play key roles in regulating immune responses in the antigen-riched intestinal environment, either by initiating immune responses or by maintaining tolerance. Defects in this regulation are supposed to lead to IBD. This paper reviews the recent research advances in the relationship between IBD and dendritic cells.