intranasal administration of il-35 inhibits allergic responses and symptoms in mice with allergic rhinitis

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ID: 149826
2017
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Abstract
Background: IL-35 was recently identified as an anti-inflammatory cytokine. We previously reported that recombinant fusion protein of murine IL-35 and human IgG1 Fc fragment (rIL-35) reduced Th2 cytokines (IL-4 and IL-5) in vitro. However, it is unclear whether IL-35 can attenuate nasal allergic responses and symptoms of allergic rhinitis in vivo. Methods: To investigate the in vivo effect of IL-35 on allergic rhinitis in mice, mice were sensitized with ovalbumin (OVA). Intranasal administration of rIL-35 and intranasal challenge of OVA were then performed. Nasal symptoms were estimated after the last nasal challenge. Nasal tissue and cervical lymph nodes (CLN) were collected. OVA-specific IgE in sera, OVA-specific T cell response, and the production of cytokines (IL-4, IL-5, and IL-10) stimulated by the OVA antigen were measured. The transcription level of Foxp3 and the frequency of CD4+CD25+ regulatory T cells were also measured. Results: rIL-35 significantly inhibited the number of sneezes and nasal rubbing movements. It also reduced the number of eosinophils in the nasal mucosa and significantly decreased the level of OVA-specific IgE, the OVA-specific T cell proliferation, and the production of IL-4 and IL-5. Furthermore, rIL-35 significantly increased the production of IL-10, the transcription level of Foxp3, and the frequency of CD4+CD25+ regulatory T cells. Conclusions: This study showed for the first time that rIL-35 inhibits nasal allergic responses and symptoms in mice, and that rIL-35 increases IL-10, Foxp3, and CD4+CD25+ regulatory T cells in CLN. This study also suggests that intranasal administration of IL-35 can attenuate allergic rhinitis.
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suzuki2017allergologyintranasal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Motohiko Suzuki, Makoto Yokota, Yoshihisa Nakamura, Shinya Ozaki, Shingo Murakami
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Journal current drug discovery technologies
Year 2017
DOI
10.1016/j.alit.2016.08.014
URL
http://www.sciencedirect.com/science/article/pii/S1323893016301332
Keywords
allergic rhinitis il-10 allergy

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