Abstract:
:Spondweni virus (SPOV) is the flavivirus that is most closely related to Zika virus (ZIKV). Although SPOV causes sporadic human infections in Africa, recently it was found in Culex mosquitoes in Haiti. To investigate the pathogenic spectrum of SPOV, we developed infection models in mice. Although two SPOV strains failed to cause disease in immunocompetent mice, each accumulated in the brain, spleen, eye, testis, and kidney when type I interferon signaling was blocked and unexpectedly caused infection, immune cell infiltration, and swelling in the ankle. In pregnant mice, SPOV replicated in the placenta and fetus but did not cause placental insufficiency or microcephaly. We identified human antibodies from ZIKV or DENV immune subjects that neutralized SPOV infection and protected against lethal challenge. Our experiments describe similarities and differences in clinical syndromes between SPOV and ZIKV and suggest that their serological relatedness has implications for antibody therapeutics and flavivirus vaccine development.
journal_name
Cell Repjournal_title
Cell reportsauthors
Salazar V,Jagger BW,Mongkolsapaya J,Burgomaster KE,Dejnirattisai W,Winkler ES,Fernandez E,Nelson CA,Fremont DH,Pierson TC,Crowe JE Jr,Screaton GR,Diamond MSdoi
10.1016/j.celrep.2019.01.052subject
Has Abstractpub_date
2019-02-05 00:00:00pages
1585-1597.e4issue
6issn
2211-1247pii
S2211-1247(19)30081-6journal_volume
26pub_type
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