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Puc18-Cpg Is An Effective Adjuvant For A Duck Tembusu Virus Inactivated Vaccine

文献类型: 外文期刊

作者: Ren, X; Wang, XL; Zhang, S; Gao, XT; Fang, LC; Wang, XX; Lin, WD; Jia, H; Guo, XY; Xin, T; Zhu, HF; Lin, J; Hou, SH

作者机构:

关键词: Puc18-Cpg; Adjuvant; Duck Tembusu Virus; Inactivated Vaccine

期刊名称: VIRUSES-BASEL

ISSN:

年卷期: 2020 年 12 卷 2 期

页码:

收录情况: JCR(2021版)

摘要: Duck Tembusu virus (DTMUV) is an emerging pathogenic flavivirus responsible for massive economic losses in the duck industry. However, commercially inactivated DTMUV vaccines have been ineffective at inducing protective immunity in ducks. The widely used adjuvant cytosine-phosphate-guanine oligodeoxynucleotides (CpG ODNs) reportedly improve humoral and cellular immunities in animal models. However, its effectiveness in DTMUV vaccines requires validation. Here, we assessed the protective efficacy of pUC18-CpG as an adjuvant in an inactivated live DTMUV vaccine in ducks. Our results revealed that the serum hemagglutination inhibition (HI) antibody titers, positive rates of anti-DTMUV antibodies, the concentration of serum cytokines, and protection efficacy were significantly increased in ducks immunized with pUC18-CpG compared to that in the control group. Moreover, ducks immunized with a full vaccine dose containing a half dose of antigen supplemented with 40 mu g of pUC18-CpG exhibited the most potent responses. This study suggests that pUC18-CpG is a promising adjuvant against DTMUV, which might prove effective in treating other viral diseases in waterfowl.

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