| Autor: |
Lei Hou, Yongyan Shi, Jinshuo Guo, Tong Sun, Dedong Wang, Xiaoyu Yang, Changzhe Liu, Yongqiu Cui, Ning Zhu, Xinxin Tong, Yang Pan, Xufei Feng, Jianwei Zhou, Jue Liu |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Microbiology spectrum. |
| ISSN: |
2165-0497 |
| Popis: |
Avian metapneumovirus subgroup C (aMPV/C) is an important pathogen that causes upper respiratory symptoms and egg production decline in turkeys and chickens. aMPV/C infection leads to inhibition of the host antiviral immune response. However, our understanding of the molecular mechanisms underlying host immune response antagonized by aMPV/C infection is limited. In this study, we demonstrated that the aMPV/C phosphoprotein (P) inhibits the IFN antiviral signaling pathway triggered by melanoma differentiation gene 5 (MDA5) and reduces interferon β (IFN-β) production and IFN-stimulated genes (ISGs) by targeting IFN regulatory factor 7 (IRF7) but not nuclear factor κB (NF-κB) in DF-1 cells. Moreover, we found that aMPV/C P protein only blocks the nuclear translocation of IRF3 by interacting with IRF3 in HEK-293T cells, instead of affecting IRF3 phosphorylation and inducing IRF3 degradation, which suppresses IRF3 signaling activation and results in a decrease in IFN-β production. Collectively, these results reveal a novel mechanism by which aMPV/C infection disrupts IFN-β production in the host. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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