Multivalent DNA Vaccines as a Strategy to Combat Multiple Concurrent Epidemics: Mosquito-Borne and Hemorrhagic Fever Viruses
Abstract
The emergence of multiple concurrent infectious diseases localized in the world creates a complex burden on global public health systems. Outbreaks of Ebola, Lassa, and Marburg viruses in overlapping regions of central and West Africa and the co-circulation of Zika, Dengue, and Chikungunya viruses in areas with A. aegypti mosquitos highlight the need for a rapidly deployable, safe, and versatile vaccine platform readily available to respond. The DNA vaccine platform stands out as such an application. Here, we present proof-of-concept studies from mice, guinea pigs, and non-human primates for two multivalent DNA vaccines delivered using in vivo electroporation (EP) targeting mosquito-borne (MMBV) and hemorrhagic fever (MHFV) viruses. Immunization with MMBV or MHFV vaccines via intradermal EP delivery generated robust cellular and humoral immune responses against all target viral antigens in all species. MMBV vaccine generated antigen-specific binding antibodies and IFNγ-secreting lymphocytes detected in NHPs up to six months post final immunization, suggesting induction of long-term immune memory. Serum from MHFV vaccinated NHPs demonstrated neutralizing activity in Ebola, Lassa, and Marburg pseudovirus assays indicating the potential to offer protection. Together, these data strongly support and demonstrate the versatility of DNA vaccines as a multivalent vaccine development platform for emerging infectious diseases.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 27, 2021
- Source ID
- 10.3390/v13030382
Entities
People
- Ami Patel
- Connie S Schmaljohn
- David B. Weiner
- Dustin Elwood
- Holly Pugh
- Jared Tur
- Jewell Walters
- Jian Yan
- Jingjing Jiang
- Kar Muthumani
- Kate E. Broderick
- Katherine Schultheis
- Kathleen A. Cashman
- Laurent M. Humeau
- Preeti Bangalore
- Sagar B. Kudchodkar
- Stephanie J Ramos
Organizations
- United States Department of Defense