| Literature DB >> 33514743 |
Wei-Xin Chin1, Regina Ching Hua Lee1, Parveen Kaur1, Tian Sheng Lew1, Thinesshwary Yogarajah1, Hao Yuin Kong2, Zi-Yun Teo1, Cyrill Kafi Salim1, Rong-Rong Zhang3, Xiao-Feng Li3, Sylvie Alonso4,5, Cheng-Feng Qin3, Justin Jang Hann Chu6,7,8.
Abstract
The mosquito-borne Zika virus is an emerging pathogen from the Flavivirus genus for which there are no approved antivirals or vaccines. Using the clinically validated PDK-53 dengue virus vaccine strain as a backbone, we created a chimeric dengue/Zika virus, VacDZ, as a live attenuated vaccine candidate against Zika virus. VacDZ demonstrates key markers of attenuation: small plaque phenotype, temperature sensitivity, attenuation of neurovirulence in suckling mice, and attenuation of pathogenicity in interferon deficient adult AG129 mice. VacDZ may be administered as a traditional live virus vaccine, or as a DNA-launched vaccine that produces live VacDZ in vivo after delivery. Both vaccine formulations induce a protective immune response against Zika virus in AG129 mice, which includes neutralising antibodies and a strong Th1 response. This study demonstrates that VacDZ is a safe and effective vaccine candidate against Zika virus.Entities:
Year: 2021 PMID: 33514743 DOI: 10.1038/s41541-021-00282-y
Source DB: PubMed Journal: NPJ Vaccines ISSN: 2059-0105 Impact factor: 7.344