Bivalent DNA vaccine induces significant immune responses against infectious hematopoietic necrosis virus and infectious pancreatic necrosis virus in rainbow trout
文献类型： 外文期刊
作者： Xu, Liming 1 ; Zhao, Jingzhuang 1 ; Liu, Miao 1 ; Ren, Guangming 1 ; Jian, Feng 2 ; Yin, Jiasheng 1 ; Feng, Ji 1 ; Liu, H 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Heilongjiang River Fishery Res Inst, Harbin 150070, Peoples R China
2.Benxi AgriMarine Ind Inc, Benxi 117000, Peoples R China
期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）
ISSN： 2045-2322
年卷期： 2017 年 7 卷
页码：
收录情况： SCI
摘要： aInfectious hematopoietic necrosis virus (IHNV) and infectious pancreatic necrosis virus (IPNV) are important pathogens of salmon and trout. An active bivalent DNA vaccine was constructed with the glycoprotein gene of Chinese IHNV isolate Sn1203 and VP2-VP3 gene of Chinese IPNV isolate ChRtm213. Rainbow trout (5 g) were vaccinated by intramuscular injection with 1.0 mu g of the bivalent DNA vaccine and then challenged with an intraperitoneal injection of IHNV, IPNV, or both, at 30 and 60 days post-vaccination (d.p.v.). High protection rates against IHNV were observed, with 6% and 10% cumulative mortality, respectively, compared with 90-94% in the mock-vaccinated groups. IPNV loads (531-fold and 135-fold, respectively) were significantly reduced in the anterior kidneys of the vaccinated trout. Significant protection against co-infection with IHNV and IPNV was observed, with cumulative mortality rates of 6.67% and 3.33%, respectively, compared with 50.0% and 43.3%, respectively, in the mock-vaccinated groups. No detectable infective IHNV or IPNV was recovered from vaccinated trout co-infected with IHNV and IPNV. The bivalent DNA vaccine increased the expression of Mx-1 and IFN-. at 4, 7, and 15 d.p.v, and IgM at 21 d.p.v., and induced high titres (>= 160) of IHNV and IPNV neutralizing antibodies at 30 and 60 d.p.v.
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