Lumpy skin disease virus 001/156 protein is a virulence factor that suppresses interferon production through impairing IRF3 dimerization
文献类型: 外文期刊
作者: Minmin Zhang;Yujie Shi;Xinyin Lu;Qiwei Zhang;Yubo Zhao;Shaohan Li;Zhiyuan Wen;Jinying Ge;Xijun Wang;Jie Li;Zhigao Bu;Xin Yin
作者机构:
关键词: 牛结节性皮肤病病毒;;LSDV; 001/156; IRF3
期刊名称: PLOS Pathogens
ISSN: 1553-7366
年卷期: 2025 年 21 卷 7 July 期
页码:
收录情况: SCIE(2025版)
摘要: Lumpy skin disease virus (LSDV), a member of the genus Capripoxvirus within the family Poxviridae, causes significant disease in cattle and is classified as a notifiable disease by the World Organization for Animal Health (WOAH). The virus contains a double-stranded linear DNA genome of approximately 151 kbp, encoding 156 predicted open reading frames (ORFs) for various proteins. However, only a limited number of these proteins have been characterized, with the functions of many—particularly those encoded within the inverted terminal repeat (ITR) regions—remaining largely unknown. In this study, we utilized homologous recombination to generate LSDV mutants with deletions of the LSDV 001/156 gene to investigate its role. LSDV 001/156, an uncharacterized protein located within the ITR region, was identified as a late-expressed gene product incorporated into virions and involved in viral replication. Further analysis revealed that LSDV 001/156 acts as a negative regulator of the interferon (IFN) signaling pathway. It interacts with interferon regulatory factor 3 (IRF3), disrupting its dimerization and nuclear translocation, thereby attenuating IFN production. Functional studies demonstrated that the LSDV mutant lacking the 001/156 gene exhibited reduced replication and virulence in cattle compared to the wild-type virus, likely due to enhanced IFN responses in the absence of this immune-evasive protein. In summary, our findings uncover a novel role of the LSDV 001/156 gene in modulating the host intrinsic antiviral response, shedding light on the mechanisms underlying LSDV pathogenesis. This study highlights the importance of ITR-encoded genes in immune evasion and virulence, providing new insights into LSDV biology and its interactions with the host immune system.
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