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Incorporation of CD55 into the Zika Viral Envelope Contributes to Its Stability against Human Complement

The rapid spread of the virus in Latin America and the association of the infection with microcephaly in newborns or Guillain–Barré Syndrome in adults prompted the WHO to declare the Zika virus (ZIKV) epidemic to be an international public health emergency in 2016. As the virus was first discovered...

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Autores principales: Malekshahi, Zahra, Bernklau, Sarah, Schiela, Britta, Koske, Iris, Banki, Zoltan, Stiasny, Karin, Harris, Claire L., Würzner, Reinhard, Stoiber, Heribert
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8003375/
https://www.ncbi.nlm.nih.gov/pubmed/33808725
http://dx.doi.org/10.3390/v13030510
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author Malekshahi, Zahra
Bernklau, Sarah
Schiela, Britta
Koske, Iris
Banki, Zoltan
Stiasny, Karin
Harris, Claire L.
Würzner, Reinhard
Stoiber, Heribert
author_facet Malekshahi, Zahra
Bernklau, Sarah
Schiela, Britta
Koske, Iris
Banki, Zoltan
Stiasny, Karin
Harris, Claire L.
Würzner, Reinhard
Stoiber, Heribert
author_sort Malekshahi, Zahra
collection PubMed
description The rapid spread of the virus in Latin America and the association of the infection with microcephaly in newborns or Guillain–Barré Syndrome in adults prompted the WHO to declare the Zika virus (ZIKV) epidemic to be an international public health emergency in 2016. As the virus was first discovered in monkeys and is spread not only by mosquitos but also from human to human, we investigated the stability to the human complement of ZIKV derived from mosquito (ZIKVInsect), monkey (ZIKVVero), or human cells (ZIKVA549 and ZIKVFibro), respectively. At a low serum concentration (10%), which refers to complement concentrations found on mucosal surfaces, the virus was relatively stable at 37 °C. At higher complement levels (up to 50% serum concentration), ZIKV titers differed significantly depending on the cell line used for the propagation of the virus. While the viral titer of ZIKVInsect decreased about two orders in magnitude, when incubated with human serum, the virus derived from human cells was more resistant to complement-mediated lysis (CML). By virus-capture assay and Western blots, the complement regulator protein CD55 was identified to be incorporated into the viral envelope. Blocking of CD55 by neutralizing Abs significantly increased the sensitivity to human complement. Taken together, these data indicate that the incorporation of CD55 from human cells contributes to the stability of ZIKV against complement-mediated virolysis.
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spelling pubmed-80033752021-03-28 Incorporation of CD55 into the Zika Viral Envelope Contributes to Its Stability against Human Complement Malekshahi, Zahra Bernklau, Sarah Schiela, Britta Koske, Iris Banki, Zoltan Stiasny, Karin Harris, Claire L. Würzner, Reinhard Stoiber, Heribert Viruses Article The rapid spread of the virus in Latin America and the association of the infection with microcephaly in newborns or Guillain–Barré Syndrome in adults prompted the WHO to declare the Zika virus (ZIKV) epidemic to be an international public health emergency in 2016. As the virus was first discovered in monkeys and is spread not only by mosquitos but also from human to human, we investigated the stability to the human complement of ZIKV derived from mosquito (ZIKVInsect), monkey (ZIKVVero), or human cells (ZIKVA549 and ZIKVFibro), respectively. At a low serum concentration (10%), which refers to complement concentrations found on mucosal surfaces, the virus was relatively stable at 37 °C. At higher complement levels (up to 50% serum concentration), ZIKV titers differed significantly depending on the cell line used for the propagation of the virus. While the viral titer of ZIKVInsect decreased about two orders in magnitude, when incubated with human serum, the virus derived from human cells was more resistant to complement-mediated lysis (CML). By virus-capture assay and Western blots, the complement regulator protein CD55 was identified to be incorporated into the viral envelope. Blocking of CD55 by neutralizing Abs significantly increased the sensitivity to human complement. Taken together, these data indicate that the incorporation of CD55 from human cells contributes to the stability of ZIKV against complement-mediated virolysis. MDPI 2021-03-19 /pmc/articles/PMC8003375/ /pubmed/33808725 http://dx.doi.org/10.3390/v13030510 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) ).
spellingShingle Article
Malekshahi, Zahra
Bernklau, Sarah
Schiela, Britta
Koske, Iris
Banki, Zoltan
Stiasny, Karin
Harris, Claire L.
Würzner, Reinhard
Stoiber, Heribert
Incorporation of CD55 into the Zika Viral Envelope Contributes to Its Stability against Human Complement
title Incorporation of CD55 into the Zika Viral Envelope Contributes to Its Stability against Human Complement
title_full Incorporation of CD55 into the Zika Viral Envelope Contributes to Its Stability against Human Complement
title_fullStr Incorporation of CD55 into the Zika Viral Envelope Contributes to Its Stability against Human Complement
title_full_unstemmed Incorporation of CD55 into the Zika Viral Envelope Contributes to Its Stability against Human Complement
title_short Incorporation of CD55 into the Zika Viral Envelope Contributes to Its Stability against Human Complement
title_sort incorporation of cd55 into the zika viral envelope contributes to its stability against human complement
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8003375/
https://www.ncbi.nlm.nih.gov/pubmed/33808725
http://dx.doi.org/10.3390/v13030510
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