Allergic rhinitis (AR), a common disease in otolaryngology, is a key risk factor for poorly controlled asthma and many complications, although it is not life-threatening. The negative impact of AR on social productive forces and human health is no less than that of asthma. Dendritic cells (DCs) play an important role in AR. In addition to sharing some of DC's biological characteristics, DCs-derived exosomes (DEXs) can promote the priming and activation of T cells and the maturation and differentiation of T helper type 2 (Th2) cells. Multiple signaling pathways in AR can be modulated by DEXs, which present allergens and participate in allergic immune responses. Anti-allergic drugs can be carried by DEXs to alleviate allergic airway inflammation and treat Th2-mediated AR effectively. Therefore, DEXs are crucial in the pathogenesis and treatment of AR.
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