Identification of a Novel Interferon Lambda Splice Variant in Chickens
文献类型: 外文期刊
第一作者: Chen, Jing
作者: Chen, Jing;Jin, Ningyi;Chen, Jing;Li, Peiheng;Zou, Wancheng;Jiang, Yuhang;Li, Letian;Hao, Pengfei;Gao, Zihan;Qu, Qiaoqiao;Pang, Zhaoxia;Zhuang, Xinyu;Nan, Fulong;Jin, Ningyi;Du, Shouwen;Li, Chang
作者机构:
关键词: chIFNL; identification; antiviral; NDV; influenza virus; Newcastle disease virus
期刊名称:JOURNAL OF VIROLOGY ( 影响因子:5.4; 五年影响因子:4.9 )
ISSN: 0022-538X
年卷期: 2023 年 97 卷 3 期
页码:
收录情况: SCI
摘要: Interferons (IFNs) are critical soluble factors in the immune system, and are composed of 3 types (I, II, and III) that utilize different receptor complexes (IFN-alpha R1/IFN-alpha R2, IFN-gamma R1/IFN-gamma R2, and IFN-lambda R1/IL-10R2, respectively). Herein, we identified IFNL from the genomic sequences of chicken and termed it chIFNL3a, located on chromosome 7 of chicken. Type III interferons (IFNLs) have critical roles in the host's innate immune system, also serving as the first line against pathogenic infections of mucosal surfaces. In mammals, several IFNLs have been reported; however, only limited data on the repertoire of IFNLs in avian species is available. Previous studies showed only one member in chicken (chIFNL3). Herein, we identified a novel chicken IFNL for the first time, termed chIFNL3a, which contains 354 bp, and encodes 118 amino acids. The predicted protein is 57.1% amino acid identity with chIFNL. Genetic, evolutionary, and sequence analyses indicated that the new open reading frame (ORF) groups with type III chicken IFNs represent a novel splice variant. Compared to IFNs from different species, the new ORF is clustered within the type III IFNs group. Further study showed that chIFNL3a could activate a panel of IFN-regulated genes and function mediated by the IFNL receptor, and chIFNL3a markedly inhibited the replication of Newcastle disease virus (NDV) and influenza virus in vitro. These data collectively shed light on the repertoire of IFNs in avian species and provide useful information that further elucidate the interaction of the chIFNLs and viral infection of poultry.IMPORTANCE Interferons (IFNs) are critical soluble factors in the immune system, and are composed of 3 types (I, II, and III) that utilize different receptor complexes (IFN-alpha R1/IFN-alpha R2, IFN-gamma R1/IFN-gamma R2, and IFN-lambda R1/IL-10R2, respectively). Herein, we identified IFNL from the genomic sequences of chicken and termed it chIFNL3a, located on chromosome 7 of chicken. Phylogenetically clustered with all known types of chicken IFNs, the finding of this IFN is considered a type III IFN. To further evaluate the biological properties of chIFNL3a, the target protein was prepared by the baculovirus expression system (BES), which could markedly inhibit the replication of NDV and influenza viruses. In this study, we uncovered a new interferon lambda splice variant of chicken, termed chIFNL3a, which could inhibit viral replication in cells. Importantly, these novel findings may extend to other viruses, offering a new direction for therapeutic interventions.
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