Broad spectrum of mimiviridae virophage allows its isolation using a mimivirus reporter.

The giant virus Mimiviridae family includes 3 groups of viruses: group A (includes Acanthamoeba polyphaga Mimivirus), group B (includes Moumouvirus) and group C (includes Megavirus chilensis). Virophages have been isolated with both group A Mimiviridae (the Mamavirus strain) and the related Cafeteri...

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Main Authors: Morgan Gaia, Isabelle Pagnier, Angélique Campocasso, Ghislain Fournous, Didier Raoult, Bernard La Scola
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2013-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC3626643?pdf=render
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author Morgan Gaia
Isabelle Pagnier
Angélique Campocasso
Ghislain Fournous
Didier Raoult
Bernard La Scola
author_facet Morgan Gaia
Isabelle Pagnier
Angélique Campocasso
Ghislain Fournous
Didier Raoult
Bernard La Scola
author_sort Morgan Gaia
collection DOAJ
description The giant virus Mimiviridae family includes 3 groups of viruses: group A (includes Acanthamoeba polyphaga Mimivirus), group B (includes Moumouvirus) and group C (includes Megavirus chilensis). Virophages have been isolated with both group A Mimiviridae (the Mamavirus strain) and the related Cafeteria roenbergensis virus, and they have also been described by bioinformatic analysis of the Phycodnavirus. Here, we found that the first two strains of virophages isolated with group A Mimiviridae can multiply easily in groups B and C and play a role in gene transfer among these virus subgroups. To isolate new virophages and their Mimiviridae host in the environment, we used PCR to identify a sample with a virophage and a group C Mimiviridae that failed to grow on amoeba. Moreover, we showed that virophages reduce the pathogenic effect of Mimivirus (plaque formation), establishing its parasitic role on Mimivirus. We therefore developed a co-culture procedure using Acanthamoeba polyphaga and Mimivirus to recover the detected virophage and then sequenced the virophage's genome. We present this technique as a novel approach to isolating virophages. We demonstrated that the newly identified virophages replicate in the viral factories of all three groups of Mimiviridae, suggesting that the spectrum of virophages is not limited to their initial host.
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spelling doaj.art-4415b516e0e841b8b268140658bda3c52022-12-21T23:47:23ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-0184e6191210.1371/journal.pone.0061912Broad spectrum of mimiviridae virophage allows its isolation using a mimivirus reporter.Morgan GaiaIsabelle PagnierAngélique CampocassoGhislain FournousDidier RaoultBernard La ScolaThe giant virus Mimiviridae family includes 3 groups of viruses: group A (includes Acanthamoeba polyphaga Mimivirus), group B (includes Moumouvirus) and group C (includes Megavirus chilensis). Virophages have been isolated with both group A Mimiviridae (the Mamavirus strain) and the related Cafeteria roenbergensis virus, and they have also been described by bioinformatic analysis of the Phycodnavirus. Here, we found that the first two strains of virophages isolated with group A Mimiviridae can multiply easily in groups B and C and play a role in gene transfer among these virus subgroups. To isolate new virophages and their Mimiviridae host in the environment, we used PCR to identify a sample with a virophage and a group C Mimiviridae that failed to grow on amoeba. Moreover, we showed that virophages reduce the pathogenic effect of Mimivirus (plaque formation), establishing its parasitic role on Mimivirus. We therefore developed a co-culture procedure using Acanthamoeba polyphaga and Mimivirus to recover the detected virophage and then sequenced the virophage's genome. We present this technique as a novel approach to isolating virophages. We demonstrated that the newly identified virophages replicate in the viral factories of all three groups of Mimiviridae, suggesting that the spectrum of virophages is not limited to their initial host.http://europepmc.org/articles/PMC3626643?pdf=render
spellingShingle Morgan Gaia
Isabelle Pagnier
Angélique Campocasso
Ghislain Fournous
Didier Raoult
Bernard La Scola
Broad spectrum of mimiviridae virophage allows its isolation using a mimivirus reporter.
PLoS ONE
title Broad spectrum of mimiviridae virophage allows its isolation using a mimivirus reporter.
title_full Broad spectrum of mimiviridae virophage allows its isolation using a mimivirus reporter.
title_fullStr Broad spectrum of mimiviridae virophage allows its isolation using a mimivirus reporter.
title_full_unstemmed Broad spectrum of mimiviridae virophage allows its isolation using a mimivirus reporter.
title_short Broad spectrum of mimiviridae virophage allows its isolation using a mimivirus reporter.
title_sort broad spectrum of mimiviridae virophage allows its isolation using a mimivirus reporter
url http://europepmc.org/articles/PMC3626643?pdf=render
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