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Viruses 2018, 10(2), 53; https://doi.org/10.3390/v10020053

Higher Cytopathic Effects of a Zika Virus Brazilian Isolate from Bahia Compared to a Canadian-Imported Thai Strain

1
Virus-Cell Interactions Laboratory, Lady Davis Institute for Medical Research, H3T 1E2, Montréal, QC, Canada
2
RNA Trafficking Laboratory, Lady Davis Institute for Medical Research, H3T 1E2, Montréal, QC, Canada
3
Department of Medicine, Division of Experimental Medicine, McGill University, H4A 3J1, Montréal, QC, Canada
4
Department of Microbiology and Immunology, McGill University, H3A 2B4, Montréal, QC, Canada
5
Department of Biochemistry, McGill University, H3A 1A3, Montréal, QC, Canada
6
Departamento de Bioquimica e Imunologia do Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, 31270-901, Belo Horizonte, MG, Brazil
*
Author to whom correspondence should be addressed.
Received: 30 November 2017 / Revised: 5 January 2018 / Accepted: 21 January 2018 / Published: 27 January 2018
(This article belongs to the Special Issue Homage to Mark Wainberg)
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Abstract

Zika virus (ZIKV) is an emerging pathogen from the Flaviviridae family. It represents a significant threat to global health due to its neurological and fetal pathogenesis (including microcephaly and congenital malformations), and its rapid dissemination across Latin America in recent years. The virus has spread from Africa to Asia, the Pacific islands and the Americas with limited knowledge about the pathogenesis associated with infection in recent years. Herein, we compared the ability of the Canadian-imported Thai strain PLCal_ZV and the Brazilian isolate HS-2015-BA-01 from Bahia to produce infectious ZIKV particles and cytopathic effects in a cell proliferation assay. We also compared the intracellular viral RNA accumulation of the two strains by quantitative RT-PCR (reverse transcription polymerase chain reaction) analyses. Our observations show that HS-2015-BA-01 is more cytopathic than PLCal_ZV in proliferation assays in Vero, Human Embryonic Kidney HEK 293T and neuroblastoma SH-SY5Y cells. Quantitative RT-PCR shows that the level of viral RNA is higher with HS-2015-BA-01 than with PLCal_ZV in two cell lines, but similar in a neuroblastoma cell line. The two strains have 13 amino acids polymorphisms and we analyzed their predicted protein secondary structure. The increased cytopathicity and RNA accumulation of the Brazilian ZIKV isolate compared to the Thai isolate could contribute to the increased pathogenicity observed during the Brazilian epidemic. View Full-Text
Keywords: Zika virus; predicted protein structure; qRT-PCR; cytopathicity; viral titer Zika virus; predicted protein structure; qRT-PCR; cytopathicity; viral titer
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Alpuche-Lazcano, S.P.; McCullogh, C.R.; Del Corpo, O.; Rance, E.; Scarborough, R.J.; Mouland, A.J.; Sagan, S.M.; Teixeira, M.M.; Gatignol, A. Higher Cytopathic Effects of a Zika Virus Brazilian Isolate from Bahia Compared to a Canadian-Imported Thai Strain. Viruses 2018, 10, 53.

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