The African Zika virus MR-766 is more virulent and causes more severe brain damage than current Asian lineage and dengue virus.
Development
; 144(22): 4114-4124, 2017 11 15.
Article
en En
| MEDLINE
| ID: mdl-28993398
ABSTRACT
The Zika virus (ZIKV) has two lineages, Asian and African, and their impact on developing brains has not been compared. Dengue virus (DENV) is a close family member of ZIKV and co-circulates with ZIKV. Here, we performed intracerebral inoculation of embryonic mouse brains with dengue virus 2 (DENV2), and found that DENV2 is sufficient to cause smaller brain size due to increased cell death in neural progenitor cells (NPCs) and neurons. Compared with the currently circulating Asian lineage of ZIKV (MEX1-44), DENV2 grows slower, causes less neuronal death and fails to cause postnatal animal death. Surprisingly, our side-by-side comparison uncovered that the African ZIKV isolate (MR-766) is more potent at causing brain damage and postnatal lethality than MEX1-44. In comparison with MEX1-44, MR-766 grows faster in NPCs and in the developing brain, and causes more pronounced cell death in NPCs and neurons, resulting in more severe neuronal loss. Together, these results reveal that DENV2 is sufficient to cause smaller brain sizes, and suggest that the ZIKV African lineage is more toxic and causes more potent brain damage than the Asian lineage.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Filogenia
/
Encéfalo
/
Virus del Dengue
/
Virus Zika
Tipo de estudio:
Etiology_studies
Límite:
Animals
País/Región como asunto:
Africa
/
Asia
Idioma:
En
Revista:
Development
Asunto de la revista:
BIOLOGIA
/
EMBRIOLOGIA
Año:
2017
Tipo del documento:
Article
País de afiliación:
Estados Unidos