Parasitology Research

, Volume 114, Issue 6, pp 2333–2339 | Cite as

Malaria DNA vaccine gp96NTD-CSP elicits both CSP-specific antibody and CD8+ T cell response

  • Zhangping Tan
  • TaoLi Zhou
  • Hong Zheng
  • Yan Ding
  • Wenyue XuEmail author
Original Paper


It is ideal for the pre-erythrocytic stage subunit vaccine to induce both CSP-specific antibody and CD8+ T cell response. Here, we designed a novel malaria DNA vaccine gp96NTD-CSP, which was constructed by fusing the full-length of CSP with the N-terminal domain of gp96 that deleted the endoplasmic reticulum-localized motif KDEL, and investigated its protective efficacy. We found that the fusion protein gp96NTD-CSP was mainly distributed on the surface of eukaryotic cells after transfection and could be sensed as a “danger signal” by the host immune system. Interestingly, both liver parasite burden and parasitemia in mice immunized with gp96NTD-CSP were significantly lower than those in the mice immunized either with gp96NTD, CSP, or gp96NTD-SYVPSAEQI, which was constructed by fusing the CSP-specific CD8+ T cell epitope with the N-terminal domain of gp96 deleted with KDEL. Consistently, both the level of CSP-specific antibody and the frequency of IFN-γ secreted-CSP-specific CD8+ T cells were much higher in mice immunized with gp96NTD-CSP than those in the mice immunized either with gp96NTD, CSP, or gp96NTD-SYVPSAEQI. Our results suggest that the malaria DNA vaccine gp96NTD-CSP could induce both humoral and cellular immune responses, which is attributed to the adjuvant effect of gp96NTD and full-length CSP.


Malaria DNA vaccine gp96NTD-CSP CSP-specific antibody CD8+ T cell response 



This work was supported by the Natural Science Foundation of China (WX 81271859) and the Natural Science Foundation of Military (WX CWS12J093). We thank Dr. Nicchitta from Duke University for providing us with gp96 plasmid.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Department of Pathogenic BiologyThe Third Military Medical UniversityChongqingPeople’s Republic of China

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