Dengue Virus-Specific Antibodies Enhance Brazilian Zika Virus Infection

作者:Castanha Priscila M S; Nascimento Eduardo J M; Braga Cynthia; Cordeiro Marli T; de Carvalho Otavio V; de Mendonca Leila R; Azevedo Elisa A N; Franca Rafael F O; Dhalia Rafael; Marques Ernesto T A*
来源:Journal of Infectious Diseases, 2017, 215(5): 781-785.
DOI:10.1093/infdis/jiw638

摘要

Anti-Flavivirus antibodies are highly cross-reactive and may facilitate Zika virus (ZIKV) infection through the antibody-dependent enhancement (ADE) mechanism. We demonstrate that dengue-specific antibodies enhance the infection of a primary Brazilian ZIKV isolate in a Fc gamma RII-expressing K562 cell line. In addition, we demonstrate that serum samples from dengue-immune pregnant women enhanced ZIKV infection. These findings highlight the need for epidemiological studies and animal models to further confirm the role of ADE in the development of congenital and neurological complications associated with ZIKV infections.