Vaccine mediated protection against Zika virus-induced congenital disease

• Autor(a) principal: Richner, Justin M.
• Data de Publicação: 2017
• Outros Autores: Jagger, Brett W., Shan, Chao, Fontes-Garfias, Camila R, Dowd, Kimberly A., Cao, Bin, Himansu, Sunny, Caine, Elizabeth A., Nunes, Bruno Tardelli Diniz, Medeiros, Daniele Barbosa de Almeida, Muruato, Antonio E., Foreman, Bryant M., Luo, Huanle, Wang, Tian, Barrett, Alan D., Weaver, Scott C., Vasconcelos, Pedro Fernando da Costa, Rossi, Shannan L., Ciaramella, Giuseppe, Mysorekar, Indira U., Pierson, Theodore C., Shi, Pei-Yong, Diamond, Michael S.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Digital do Instituto Evandro Chagas (Patuá)
• Texto Completo: https://patua.iec.gov.br/handle/iec/2842
• topic: Zika virus / fisiologia; Infecção pelo Zika virus / imunologia; Infecção pelo Zika virus / prevenção & controle; Infecção pelo Zika virus / virologia; Vacinas Virais / administração & dosagem; Vacinas Virais / imunologia; Vacinas de Subunidades / administração & dosagem; Vacinas de Subunidades / imunologia; Feto / virologia; Mutação; Camundongos Endogâmicos C57BL

The emergence of Zika virus (ZIKV) and its association with congenital malformations has prompted the rapid development of vaccines. Although efficacy with multiple viral vaccine platforms has been established in animals, no study has addressed protection during pregnancy. We tested in mice two vaccine platforms, a lipid nanoparticle-encapsulated modified mRNA vaccine encoding ZIKV prM and E genes and a live-attenuated ZIKV strain encoding an NS1 protein without glycosylation, for their ability to protect against transmission to the fetus. Vaccinated dams challenged with a heterologous ZIKV strain at embryo day 6 (E6) and evaluated at E13 showed markedly diminished levels of viral RNA in maternal, placental, and fetal tissues, which resulted in protection against placental damage and fetal demise. As modified mRNA and live-attenuated vaccine platforms can restrict in utero transmission of ZIKV in mice, their further development in humans to prevent congenital ZIKV syndrome is warranted.