Dataset Information


Induction of high-affinity IgE receptor on lung dendritic cells during viral infection leads to mucous cell metaplasia.

ABSTRACT: Respiratory viral infections are associated with an increased risk of asthma, but how acute Th1 antiviral immune responses lead to chronic inflammatory Th2 disease remains undefined. We define a novel pathway that links transient viral infection to chronic lung disease with dendritic cell (DC) expression of the high-affinity IgE receptor (FcepsilonRIalpha). In a mouse model of virus-induced chronic lung disease, in which Sendai virus triggered a switch to persistent mucous cell metaplasia and airway hyperreactivity after clearance of replicating virus, we found that FceRIa(-/-) mice no longer developed mucous cell metaplasia. Viral infection induced IgE-independent, type I IFN receptor-dependent expression of FcepsilonRIalpha on mouse lung DCs. Cross-linking DC FcepsilonRIalpha resulted in the production of the T cell chemoattractant CCL28. FceRIa(-/-) mice had decreased CCL28 and recruitment of IL-13-producing CD4(+) T cells to the lung after viral infection. Transfer of wild-type DCs to FceRIa(-/-) mice restored these events, whereas blockade of CCL28 inhibited mucous cell metaplasia. Therefore, lung DC expression of FcepsilonRIalpha is part of the antiviral response that recruits CD4(+) T cells and drives mucous cell metaplasia, thus linking antiviral responses to allergic/asthmatic Th2 responses.

PROVIDER: S-EPMC2118483 | BioStudies | 2007-01-01T00:00:00Z

REPOSITORIES: biostudies

Similar Datasets

| S-EPMC4016817 | BioStudies
| S-EPMC3059126 | BioStudies
| S-EPMC2673763 | BioStudies
| S-EPMC3175541 | BioStudies
| S-EPMC5548608 | BioStudies
| S-EPMC3478616 | BioStudies
| S-EPMC6337809 | BioStudies
| S-EPMC8066359 | BioStudies
| S-EPMC5512939 | BioStudies
2013-01-01 | S-EPMC3727878 | BioStudies