African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5215

Full Length Research Paper

Immunogenicity and protective efficacy against tuberculosis with DNA expressing ESAT6 protein

Lin Sang1*, Guihua Xiong2 and Hongxia Zhang3      
1The Hospital of Changchun University, Changchun  130022, China. 2The Affiliated Hospital, Changchun University of Chinese Medicine, Changchun 130021, China. 3China-Japan Union Hospital, Jilin University, Changchun 130033, China.  
Email: [email protected]

  •  Accepted: 09 December 2011
  •  Published: 16 January 2012


The greatest challenges in tuberculosis (TB) vaccine development include optimization of vaccines for use in humans, creation of effective single-dose vaccines, development of delivery systems that do not involve live viruses, and the identification of effective new adjuvants. In this study, we examined the immunogenicity and protective efficacy of DNA vaccine (pVAX1-ESAT6) expressing ESAT6 protein and its booster effects in mice for control tuberculosis. The results showed that ESAT6 DNA vaccine led to a dramatic augmentation of humoral and cellular responses. The novel immunogenic ESAT6 DNA vaccine revealed in this study provided a new candidate target for tuberculosis vaccine development.


Key words: Tuberculosis, Immunogenicity, ESAT6, humoral immune, cellular immune.