Type III interferon, age and IFNL gene single nucleotide polymorphisms determine the characteristics of H1N1 influenza infection
文献类型： 外文期刊
作者： Zhu, Wenbo 1 ; Wang, Shao 2 ; Guan, Chenchen 3 ; Liu, Shuangquan 3 ; Zhang, Hongbo 4 ;
作者机构： 1.Univ South China, Affiliated Hosp 1, Clin Med Res Ctr, Hengyang Med Sch, Hengyang 421001, Hunan, Peoples R China
2.Fujian Acad Agr Sci, Inst Anim Husb & Vet Med, Fuzhou, Peoples R China
3.Univ South China, Affiliated Hosp 1, Hengyang Med Sch, Clin Lab, Hengyang, Hunan, Peoples R China
4.Univ Pittsburgh, Sch Med, Dept Pediat, Pittsburgh, PA 15213 USA
关键词： type III interferon; single nucleotide polymorphisms; age; obesity; influenza infection
期刊名称：FRONTIERS IN IMMUNOLOGY （ 影响因子：5.9； 五年影响因子：6.8 ）
ISSN： 1664-3224
年卷期： 2025 年 16 卷
页码：
收录情况： SCI
摘要： Background Host factors, such as innate immune response, genetic polymorphisms, age, and body weight are important determinants of susceptibility, severity, and responsiveness to treatment of influenza disease. However, the molecular mechanisms underlying these clinical associations remain poorly characterized, particularly regarding IFN-lambda-mediated antiviral responses.Methods Wild-type mice and IL-28B-/- mice were used to systematically investigate the antiviral and anti-inflammatory functions of IL-29 or IL-28, respectively. Plaque assay and DNA genotyping were conducted to determine the correlations between IFN-lambda polymorphisms and H1N1 infection outcomes. ELISA, Real-time PCR and luciferase reporter assays were carried out to explore the mechanism.Results IFN-lambda plays an important antiviral and immunoprotective role in H1N1 infection. Specifically, IL-29 and IL-28 exhibit important dual antiviral and anti-inflammaroty roles. Age factor also affects H1N1 clearance and therapeutic responsiveness. Human alveolar epithelial cells (AECs) from young donors support higher H1N1 replication and weak response to antiviral treatment with IL-29. Rs12979860 (IL-28 C/T), rs8099917 (IL-28 T/G) and rs30461 (IL-29 A/G), the three identified single nucleotide polymorphisms (SNPs) in IFNL genes, are also associated with H1N1 outcomes. AECs from rs12979860TT and rs8099917GG donors exhibit higher H1N1 replication and nonresponsiveness to IL-29 antiviral therapy. AECs from rs12979860 TT donors also produce lower levels of IFN and exhibit inhibited promoter activity of IL-29 in response to H1N1 infection. In addition, increased allele frequencies of rs12979860 T and rs8099917 G were associated with higher BMI, another important factor influencing H1N1 susceptibility.Conclusions This is the first study to comprehensively explore the impact of host factors, especially IFN-lambda polymorphisms, on H1N1 virus infection. Further elucidation of the underlying mechanisms may help to develop novel prevention and treatment strategies for influenza virus infection.
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