Castanha Priscila M S, Nascimento Eduardo J M, Braga Cynthia, Cordeiro Marli T, de Carvalho Otávio V, de Mendonça Leila R, Azevedo Elisa A N, França Rafael F O, Dhalia Rafael, Marques Ernesto T A
Aggeu Magalhães Research Center, Oswaldo Cruz Foundation (FIOCRUZ), Recife, Brazil.
Faculty of Medical Science/ Institute of Biological Science, University of Pernambuco, Recife, Brazil.
J Infect Dis. 2017 Mar 1;215(5):781-785. doi: 10.1093/infdis/jiw638.
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 FcγRII-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.
抗黄病毒抗体具有高度交叉反应性,可能通过抗体依赖增强(ADE)机制促进寨卡病毒(ZIKV)感染。我们证明,登革热特异性抗体可增强原发性巴西ZIKV毒株在表达FcγRII的K562细胞系中的感染。此外,我们证明,登革热免疫孕妇的血清样本可增强ZIKV感染。这些发现凸显了进行流行病学研究和动物模型研究以进一步证实ADE在与ZIKV感染相关的先天性和神经并发症发展中所起作用的必要性。