Single dose of a rVSV-based vaccine elicits complete protection against severe fever with thrombocytopenia syndrome virus

Fangfang Dong, Dandan Li, Dan Wen, Suhua Li, Chaoyue Zhao, Yue Qi, Rohit K. Jangra, Cuiping Wu, Dequan Xia, Xing Zhang, Fei Deng, Kartik Chandran, Zhen Zou, Fei Yuan, Aihua Zheng

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Severe fever with thrombocytopenia virus (SFTSV) is an emerging tick-borne phlebovirus that causes lethal human disease, for which there are no licensed antiviral vaccines or therapies. Herein, we developed a live attenuated recombinant vesicular stomatitis virus (rVSV)-based vaccine candidate expressing the SFTSV Gn/Gc glycoproteins (rVSV-SFTSV/AH12-GP). High titers of cross-protective, broadly neutralizing antibodies were elicited by a single dose of rVSV-SFTSV/AH12-GP in both immunocompetent and immunocompromised mice against multiple strains of SFTSV and the related but distinct phlebovirus Heartland virus (HRTV). Remarkably, complete protection against lethal challenge with SFTSV was conferred in young and old immunocompromised mice irrespective of any pre-existing vector-specific immunity. Collectively, these results suggest that a rVSV vector expressing SFTSV glycoproteins is a promising candidate vaccine against two emerging phleboviruses associated with severe human diseases.

Original languageEnglish (US)
Article number5
Journalnpj Vaccines
Volume4
Issue number1
DOIs
StatePublished - Dec 1 2019

ASJC Scopus subject areas

  • Immunology
  • Pharmacology
  • Infectious Diseases
  • Pharmacology (medical)

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  • Cite this

    Dong, F., Li, D., Wen, D., Li, S., Zhao, C., Qi, Y., Jangra, R. K., Wu, C., Xia, D., Zhang, X., Deng, F., Chandran, K., Zou, Z., Yuan, F., & Zheng, A. (2019). Single dose of a rVSV-based vaccine elicits complete protection against severe fever with thrombocytopenia syndrome virus. npj Vaccines, 4(1), [5]. https://doi.org/10.1038/s41541-018-0096-y