Virologica Sinica

, Volume 34, Issue 1, pp 88–96 | Cite as

Electroporation-Mediated Immunization of a Candidate DNA Vaccine Expressing Dengue Virus Serotype 4 prM-E Antigen Confers Long-Term Protection in Mice

  • Ziyang Sheng
  • Hui Chen
  • Kaihao Feng
  • Na Gao
  • Ran Wang
  • Peigang Wang
  • Dongying Fan
  • Jing AnEmail author
Research article


Dengue fever, caused by dengue viruses (DENVs), is a widespread mosquito-borne zoonotic disease; however, there is no available anti-dengue vaccine for worldwide use. In the current study, a DNA vaccine candidate (pV-D4ME) expressing prM-E protein of DENV serotype 4 (DENV-4) was constructed, and its immunogenicity and protection were evaluated in immunocompetent BALB/c mice. The pV-D4ME candidate vaccine induced effective humoral and cellular immunity of mice against DENV-4 in vivo when administered both at 50 μg and 5 μg through electroporation. Two weeks after receiving three immunizations, both doses of pV-D4ME DNA were shown to confer effective protection against lethal DENV-4 challenge. Notably, at 6 months after the three immunizations, 50 μg, but not 5 μg, of pV-D4ME could provide stable protection (100% survival rate) against DENV-4 lethal challenge without any obvious clinical signs. These results suggest that immunization with 50 μg pV-D4ME through electroporation could confer effective and long-term protection against DENV-4, offering a promising approach for development of a novel DNA vaccine against DENVs.


Dengue virus (DENV) DNA vaccine Long-term protection Electroporation Mouse 



This work was supported by the National Natural Science Foundation of China (81772172, 81471957, 81671971, U1602223).

Author Contributions

ZS, HC, KF, NG, DF performed the experiments. RW and PW analyzed the data. JA organized the collaboration and prepared the manuscript. All authors read and approved the final manuscript.

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.

Animal and Human Rights Statement

The whole study was approved by the Institutional Animal Care and Use Committee of Capital Medical University, China (Approval Number: AEEI-2015-066). All institutional and national guidelines for the care and use of laboratory animals were followed.


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Copyright information

© Wuhan Institute of Virology, CAS 2019

Authors and Affiliations

  1. 1.Department of Microbiology, School of Basic Medical SciencesCapital Medical UniversityBeijingChina
  2. 2.Center of EpilepsyBeijing Institute for Brain DisordersBeijingChina

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