IL-13 suppresses double-stranded RNA-induced IFN-λ production in lung cells

Atsushi Moriwaki, Koichiro Matsumoto, Yuko Matsunaga, Satoru Fukuyama, Takafumi Matsumoto, Keiko Kan-o, Naotaka Noda, Yukari Asai, Yoichi Nakanishi, Hiromasa Inoue

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


Acute sthma exacerbations are frequently associated with respiratory viral infections. Although impaired production of type III IFNs (IFN-λs) is related to the severity of asthma exacerbation, the mechanisms underlying deficient IFN-λ production in asthma are poorly understood. Airway epithelial cells were stimulated in vitro with a synthetic mimetic of viral double-stranded RNA (dsRNA). IL-13, a crucial cytokine responsible for asthma pathogenesis, suppressed dsRNA-induced expression of IFN-λs, and JAK inhibitor AG490 prevented the suppression by IL-13. IL-13 per se did not affect IFN-λ production or the expressions of membrane dsRNA receptor TLR3 and of cytoplasmic receptors RIG-I and MDA5. IL-13-deficient mice exhibited more enhanced IFN-λ expression after intratracheal instillation of dsRNA than wild-type mice, whereas IFN-λ expression after dsRNA was absent in the mouse lungs of the OVA-induced asthma model. These findings suggest that IL-13 may be a putative cytokine suppressing IFN-λ production against airway viral infections in asthmatics.

Original languageEnglish
Pages (from-to)922-927
Number of pages6
JournalBiochemical and Biophysical Research Communications
Issue number4
Publication statusPublished - Jan 28 2011

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology


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