Biotechnology Bulletin ›› 2020, Vol. 36 ›› Issue (2): 206-213.doi: 10.13560/j.cnki.biotech.bull.1985.2019-0688

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Construction of Single-walled Carbon Nanotube-loaded Koi Herpes Virus ORF149 Nucleic Acid Vaccine

HU Feng1,2, WANG Qing1, LI Ying-ying1, ZENG Wei-wei1, WANG Gao-xue3, ZHU Bin3, WANG Ying-ying1, YIN Ji-yuan1   

  1. 1. Key Laboratory of Fishery Drug Development of Ministry of Agriculture,Key Laboratory of Aquatic Animal Immune Technology of Guangdong Province,Pearl River Fisheries Research Institute,Chinese Academy of Fishery Sciences,Guangzhou 510380;
    2. College of Fisheries and Life Science,Shanghai Ocean University,Shanghai 201306;
    3.College of Animal Science and Technology,Northwest A&F University,Yangling 712100
  • Received:2019-07-31 Online:2020-02-26 Published:2020-02-23

Abstract: In order to develop a new type of highly effective vaccine against Koi Herpesvirus(KHV)disease,a single-walled carbon nanotube(SWCNT)was used as a transport vector to construct a KHV ORF149 nucleic acid vaccine. The recombinant plasmid pcDNA3.1(+)-ORF149 was firstly constructed,and its expression was confirmed by transient transfection and immunoblot analysis. Then,the recombinant plasmid was conjugated to SWCNTs by 1,3-dipolar cycloaddition reaction. Scanning electron microscopy and nucleic acid electrophoresis was conducted to identify whether the conjugation was successful. The results showed that specific signals were detected with constructed recombinant plasmid in both immunoblot analysis and indirect immunofluorescence assay after transfection. In the nucleic acid agarose gel electrophoresis,the electrophoretic band of the constructed recombinant vaccine disappeared. Under the observation of scanning electron microscopy,the morphologies of the conjugated SWCNTs with the recombinant plasmid and blank SWCNTs were significantly different.

Key words: single-walled carbon nanotubes, KHV ORF149, DNA vaccine