期刊
ONCOTARGET
卷 8, 期 68, 页码 112222-112235出版社
IMPACT JOURNALS LLC
DOI: 10.18632/oncotarget.23095
关键词
rainbow trout; cytokines; adjuvant; DNA vaccine; protection; Immune response; Immunology
资金
- Central-level Nonprofit Scientific Research Institutes Special Funds [HSY201702M]
- China Postdoctoral Science Foundation [2016M602395]
- State Key Laboratory of Freshwater Ecology and Biotechnology [2017FB03]
Seven rainbow trout cytokine genes (interleukin (IL)-2, IL-8, IL-15, IL-17, IL-1 beta, intracellular interferon (iIFN) 1a, and IFN-gamma 2) were evaluated for their adjuvant effects on a DNA vaccine, called pG, containing the glycoprotein gene of infectious hematopoietic necrosis virus (IHNV). Distinct DNA constructs in expression plasmid pcDNA3.1 encoding a cytokine gene were generated. Immunofluorescence assays in rainbow trout gonadal cells demonstrated successful protein expression from all these constructs. Subsequently, fish were immunized with pG alone or together with a cytokine expression plasmid. Results showed that each cytokine plasmids at an appropriate dose showed notable effects on immune gene expression. IL-17 and IFN-gamma 2 can enhance early specific IgM response. All cytokines, except IL-8, can benefit initial neutralizing antibody (NAb) titers. At 35 days post immunization (dpi), NAb titers of fish immunized with pG and IL-2, iIFN1a, or IFN-gamma 2 plasmids remained at high levels (1: 160). NAb titers of fish immunized with pG alone decreased to 1: 40. IL-8 or IL-1 beta can enhance antigen-specific proliferative T-cell responses at 14 dpi. At 28 dpi, coinjection of pG with IL-2, IL-8, IL-15, or IL-17 plasmids induced considerably stronger lymphocyte proliferation than that with injection of pG alone. All cytokine plasmids delivered with pG plasmid enhanced protection of trout against IHNV-mediated mortality. These results indicate that the type and dose of trout cytokine genes injected into fish affect quality of immune response to DNA vaccination.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据