Cell culture isolation of Hepatitis E Virus Genotype 3 Strain obtained from human feces

Aislamiento de una cepa genotipo 3 del virus de la hepatitis E obtenida de heces humanas

Quintero Gil, C. - Mirazo, Santiago - Parra Suescun, J. - López Herrera, A. - Mainardi, Victoria - Arbiza, Juan - Orduz, S.

Editor(es): Navas, M.C.

Resumen:

Hepatitis E virus (HEV) is considered one of the leading causes of acute viral hepatitis worldwide, and about 20 million infections and approximately 57 000 deaths occurred every year. However, little is known about the replicative virus cycle due to the absence of a consensus cell culture model. A549 cell line is considered susceptible to HEV genotype 3, however, both viral strain and cell culture conditions could affect the viral isolation in vitro. The objective of this work was to isolate in vitro an HEV-3 strain obtained from human feces. To this, a genotype 3 HEV strain previously identified by genetic characterization was inoculated in A549 monolayers, and incubated for two hours at 37 °C. Five days post-infection, cells were passaged (subcultured) for the first time, and serial passages were done on average every four days during 41 days. HEV replication was evaluated through RT-qPCR in each passage, and reinfection of the cell line with the viral progeny derived from A549 infected monolayers was assessed through immunofluorescence and RT-qPCR. Viral RNA was detected in each passage from infected monolayers, and the highest amount was found after 26 days (2 x 106 copies/μL). In reinfection assay, capsid antigen was detected perinuclearly and forming foci, and 1x104 copies/μL of viral RNA was detected after 96 hours post infection. This shows that HEV recovered from the cell lysate monolayers was infectious. This viral isolate offers a critical tool to study the unknown aspect of HEV infection.


El virus de la hepatitis E (HEV) se considera como una de las principales causas de hepatitis viral aguda en el mundo; cada año ocurren aproximadamente 20 millones de infecciones y 57 000 muertes. Debido a la ausencia de un modelo de cultivo celular consenso, se sabe poco sobre el ciclo replicativo del virus. La línea celular A549 se considera susceptible al genotipo 3 de HEV, pero tanto la cepa viral como las condiciones del cultivo celular podrían afectar el aislamiento viral in vitro. Por tanto nos propusimos aislar in vitro una cepa genotipo 3 del HEV. Para ello, se inocularon células A549 con una cepa HEV-3 identificada previamente por caracterización genética, y se incubó durante dos horas a 37 °C. Cinco días después de la infección, las células se pasaron (subcultivaron) por primera vez, y se realizaron pases seriados cada cuatro días en promedio, durante 41 días. En cada pase se evalúo la replicación del HEV mediante RT-qPCR. La reinfección de la línea celular con progenie viral derivada de monocapas de A549 infectadas se evaluó mediante inmunofluorescencia y RT-qPCR. Se detectó ARN viral en cada pase a partir de monocapas, y el pico máximo se alcanzó a los 26 días post infección (2 x 106 copias/μL). En el ensayo de reinfección, se detectó antígeno de cápside perinuclearmente y formando focos, y se detectaron 1 x 104 copias/μL de RNA viral a las 96 horas post infección. El HEV recuperado de lisado de monocapas fue infeccioso. Este aislado viral ofrece una herramienta importante para estudiar aspectos desconocidos de la infección por HEV.


Detalles Bibliográficos
2019
A549 cells
Hepevirus
Isolation
RNA virus
Inglés
Universidad de la República
COLIBRI
https://hdl.handle.net/20.500.12008/28483
Acceso abierto
Licencia Creative Commons Atribución (CC - By 4.0)
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author Quintero Gil, C.
author2 Mirazo, Santiago
Parra Suescun, J.
López Herrera, A.
Mainardi, Victoria
Arbiza, Juan
Orduz, S.
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author_facet Quintero Gil, C.
Mirazo, Santiago
Parra Suescun, J.
López Herrera, A.
Mainardi, Victoria
Arbiza, Juan
Orduz, S.
author_role author
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dc.contributor.filiacion.none.fl_str_mv Quintero Gil C.
Mirazo Santiago, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Química Biológica.
Parra Suescun J.
López Herrera A.
Mainardi Victoria
Arbiza Juan, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología
Orduz S.
dc.creator.editor.none.fl_str_mv Navas, M.C.
dc.creator.none.fl_str_mv Quintero Gil, C.
Mirazo, Santiago
Parra Suescun, J.
López Herrera, A.
Mainardi, Victoria
Arbiza, Juan
Orduz, S.
dc.date.accessioned.none.fl_str_mv 2021-07-07T14:39:01Z
dc.date.available.none.fl_str_mv 2021-07-07T14:39:01Z
dc.date.issued.none.fl_str_mv 2019
dc.description.abstract.none.fl_txt_mv Hepatitis E virus (HEV) is considered one of the leading causes of acute viral hepatitis worldwide, and about 20 million infections and approximately 57 000 deaths occurred every year. However, little is known about the replicative virus cycle due to the absence of a consensus cell culture model. A549 cell line is considered susceptible to HEV genotype 3, however, both viral strain and cell culture conditions could affect the viral isolation in vitro. The objective of this work was to isolate in vitro an HEV-3 strain obtained from human feces. To this, a genotype 3 HEV strain previously identified by genetic characterization was inoculated in A549 monolayers, and incubated for two hours at 37 °C. Five days post-infection, cells were passaged (subcultured) for the first time, and serial passages were done on average every four days during 41 days. HEV replication was evaluated through RT-qPCR in each passage, and reinfection of the cell line with the viral progeny derived from A549 infected monolayers was assessed through immunofluorescence and RT-qPCR. Viral RNA was detected in each passage from infected monolayers, and the highest amount was found after 26 days (2 x 106 copies/μL). In reinfection assay, capsid antigen was detected perinuclearly and forming foci, and 1x104 copies/μL of viral RNA was detected after 96 hours post infection. This shows that HEV recovered from the cell lysate monolayers was infectious. This viral isolate offers a critical tool to study the unknown aspect of HEV infection.
El virus de la hepatitis E (HEV) se considera como una de las principales causas de hepatitis viral aguda en el mundo; cada año ocurren aproximadamente 20 millones de infecciones y 57 000 muertes. Debido a la ausencia de un modelo de cultivo celular consenso, se sabe poco sobre el ciclo replicativo del virus. La línea celular A549 se considera susceptible al genotipo 3 de HEV, pero tanto la cepa viral como las condiciones del cultivo celular podrían afectar el aislamiento viral in vitro. Por tanto nos propusimos aislar in vitro una cepa genotipo 3 del HEV. Para ello, se inocularon células A549 con una cepa HEV-3 identificada previamente por caracterización genética, y se incubó durante dos horas a 37 °C. Cinco días después de la infección, las células se pasaron (subcultivaron) por primera vez, y se realizaron pases seriados cada cuatro días en promedio, durante 41 días. En cada pase se evalúo la replicación del HEV mediante RT-qPCR. La reinfección de la línea celular con progenie viral derivada de monocapas de A549 infectadas se evaluó mediante inmunofluorescencia y RT-qPCR. Se detectó ARN viral en cada pase a partir de monocapas, y el pico máximo se alcanzó a los 26 días post infección (2 x 106 copias/μL). En el ensayo de reinfección, se detectó antígeno de cápside perinuclearmente y formando focos, y se detectaron 1 x 104 copias/μL de RNA viral a las 96 horas post infección. El HEV recuperado de lisado de monocapas fue infeccioso. Este aislado viral ofrece una herramienta importante para estudiar aspectos desconocidos de la infección por HEV.
dc.format.extent.es.fl_str_mv 6 h.
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dc.identifier.citation.es.fl_str_mv Quintero Gil , C, Mirazo, S, Parra Suescun, J. y otros "Cell culture isolation of Hepatitis E Virus Genotype 3 Strain obtained from human feces". Acta Biológica Colombiana. [en línea] 2019, 24(3): 503-508. 6 h. DOI: 10.15446/abc.v24n3.79351
dc.identifier.doi.none.fl_str_mv 10.15446/abc.v24n3.79351
dc.identifier.issn.none.fl_str_mv 1900-1649
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/20.500.12008/28483
dc.language.iso.none.fl_str_mv en
eng
dc.publisher.es.fl_str_mv Universidad Nacional de Colombia
dc.relation.ispartof.es.fl_str_mv Acta Biológica Colombiana, 2019, 24(3): 503-508
dc.rights.license.none.fl_str_mv Licencia Creative Commons Atribución (CC - By 4.0)
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
dc.source.none.fl_str_mv reponame:COLIBRI
instname:Universidad de la República
instacron:Universidad de la República
dc.subject.en.fl_str_mv A549 cells
Hepevirus
Isolation
RNA virus
dc.title.none.fl_str_mv Cell culture isolation of Hepatitis E Virus Genotype 3 Strain obtained from human feces
Aislamiento de una cepa genotipo 3 del virus de la hepatitis E obtenida de heces humanas
dc.type.es.fl_str_mv Artículo
dc.type.none.fl_str_mv info:eu-repo/semantics/article
dc.type.version.none.fl_str_mv info:eu-repo/semantics/publishedVersion
description Hepatitis E virus (HEV) is considered one of the leading causes of acute viral hepatitis worldwide, and about 20 million infections and approximately 57 000 deaths occurred every year. However, little is known about the replicative virus cycle due to the absence of a consensus cell culture model. A549 cell line is considered susceptible to HEV genotype 3, however, both viral strain and cell culture conditions could affect the viral isolation in vitro. The objective of this work was to isolate in vitro an HEV-3 strain obtained from human feces. To this, a genotype 3 HEV strain previously identified by genetic characterization was inoculated in A549 monolayers, and incubated for two hours at 37 °C. Five days post-infection, cells were passaged (subcultured) for the first time, and serial passages were done on average every four days during 41 days. HEV replication was evaluated through RT-qPCR in each passage, and reinfection of the cell line with the viral progeny derived from A549 infected monolayers was assessed through immunofluorescence and RT-qPCR. Viral RNA was detected in each passage from infected monolayers, and the highest amount was found after 26 days (2 x 106 copies/μL). In reinfection assay, capsid antigen was detected perinuclearly and forming foci, and 1x104 copies/μL of viral RNA was detected after 96 hours post infection. This shows that HEV recovered from the cell lysate monolayers was infectious. This viral isolate offers a critical tool to study the unknown aspect of HEV infection.
eu_rights_str_mv openAccess
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identifier_str_mv Quintero Gil , C, Mirazo, S, Parra Suescun, J. y otros "Cell culture isolation of Hepatitis E Virus Genotype 3 Strain obtained from human feces". Acta Biológica Colombiana. [en línea] 2019, 24(3): 503-508. 6 h. DOI: 10.15446/abc.v24n3.79351
1900-1649
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spelling Quintero Gil C.Mirazo Santiago, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Química Biológica.Parra Suescun J.López Herrera A.Mainardi VictoriaArbiza Juan, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de BiologíaOrduz S.2021-07-07T14:39:01Z2021-07-07T14:39:01Z2019Quintero Gil , C, Mirazo, S, Parra Suescun, J. y otros "Cell culture isolation of Hepatitis E Virus Genotype 3 Strain obtained from human feces". Acta Biológica Colombiana. [en línea] 2019, 24(3): 503-508. 6 h. DOI: 10.15446/abc.v24n3.793511900-1649https://hdl.handle.net/20.500.12008/2848310.15446/abc.v24n3.79351Hepatitis E virus (HEV) is considered one of the leading causes of acute viral hepatitis worldwide, and about 20 million infections and approximately 57 000 deaths occurred every year. However, little is known about the replicative virus cycle due to the absence of a consensus cell culture model. A549 cell line is considered susceptible to HEV genotype 3, however, both viral strain and cell culture conditions could affect the viral isolation in vitro. The objective of this work was to isolate in vitro an HEV-3 strain obtained from human feces. To this, a genotype 3 HEV strain previously identified by genetic characterization was inoculated in A549 monolayers, and incubated for two hours at 37 °C. Five days post-infection, cells were passaged (subcultured) for the first time, and serial passages were done on average every four days during 41 days. HEV replication was evaluated through RT-qPCR in each passage, and reinfection of the cell line with the viral progeny derived from A549 infected monolayers was assessed through immunofluorescence and RT-qPCR. Viral RNA was detected in each passage from infected monolayers, and the highest amount was found after 26 days (2 x 106 copies/μL). In reinfection assay, capsid antigen was detected perinuclearly and forming foci, and 1x104 copies/μL of viral RNA was detected after 96 hours post infection. This shows that HEV recovered from the cell lysate monolayers was infectious. This viral isolate offers a critical tool to study the unknown aspect of HEV infection.El virus de la hepatitis E (HEV) se considera como una de las principales causas de hepatitis viral aguda en el mundo; cada año ocurren aproximadamente 20 millones de infecciones y 57 000 muertes. Debido a la ausencia de un modelo de cultivo celular consenso, se sabe poco sobre el ciclo replicativo del virus. La línea celular A549 se considera susceptible al genotipo 3 de HEV, pero tanto la cepa viral como las condiciones del cultivo celular podrían afectar el aislamiento viral in vitro. Por tanto nos propusimos aislar in vitro una cepa genotipo 3 del HEV. Para ello, se inocularon células A549 con una cepa HEV-3 identificada previamente por caracterización genética, y se incubó durante dos horas a 37 °C. Cinco días después de la infección, las células se pasaron (subcultivaron) por primera vez, y se realizaron pases seriados cada cuatro días en promedio, durante 41 días. En cada pase se evalúo la replicación del HEV mediante RT-qPCR. La reinfección de la línea celular con progenie viral derivada de monocapas de A549 infectadas se evaluó mediante inmunofluorescencia y RT-qPCR. Se detectó ARN viral en cada pase a partir de monocapas, y el pico máximo se alcanzó a los 26 días post infección (2 x 106 copias/μL). En el ensayo de reinfección, se detectó antígeno de cápside perinuclearmente y formando focos, y se detectaron 1 x 104 copias/μL de RNA viral a las 96 horas post infección. El HEV recuperado de lisado de monocapas fue infeccioso. Este aislado viral ofrece una herramienta importante para estudiar aspectos desconocidos de la infección por HEV.Submitted by Verdun Juan Pablo (jverdun@fcien.edu.uy) on 2021-06-11T00:12:27Z No. of bitstreams: 2 license_rdf: 19875 bytes, checksum: 9fdbed07f52437945402c4e70fa4773e (MD5) 10.15446abc.v24n3.79351.pdf: 662468 bytes, checksum: 86208b66265487c8fbe503a03b144e41 (MD5)Approved for entry into archive by Faget Cecilia (lfaget@fcien.edu.uy) on 2021-07-07T13:36:43Z (GMT) No. of bitstreams: 2 license_rdf: 19875 bytes, checksum: 9fdbed07f52437945402c4e70fa4773e (MD5) 10.15446abc.v24n3.79351.pdf: 662468 bytes, checksum: 86208b66265487c8fbe503a03b144e41 (MD5)Made available in DSpace by Luna Fabiana (fabiana.luna@seciu.edu.uy) on 2021-07-07T14:39:01Z (GMT). No. of bitstreams: 2 license_rdf: 19875 bytes, checksum: 9fdbed07f52437945402c4e70fa4773e (MD5) 10.15446abc.v24n3.79351.pdf: 662468 bytes, checksum: 86208b66265487c8fbe503a03b144e41 (MD5) Previous issue date: 20196 h.application/pdfenengUniversidad Nacional de ColombiaActa Biológica Colombiana, 2019, 24(3): 503-508Las obras depositadas en el Repositorio se rigen por la Ordenanza de los Derechos de la Propiedad Intelectual de la Universidad de la República.(Res. Nº 91 de C.D.C. de 8/III/1994 – D.O. 7/IV/1994) y por la Ordenanza del Repositorio Abierto de la Universidad de la República (Res. Nº 16 de C.D.C. de 07/10/2014)info:eu-repo/semantics/openAccessLicencia Creative Commons Atribución (CC - By 4.0)A549 cellsHepevirusIsolationRNA virusCell culture isolation of Hepatitis E Virus Genotype 3 Strain obtained from human fecesAislamiento de una cepa genotipo 3 del virus de la hepatitis E obtenida de heces humanasArtículoinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionreponame:COLIBRIinstname:Universidad de la Repúblicainstacron:Universidad de la RepúblicaQuintero Gil, C.Mirazo, SantiagoParra Suescun, J.López Herrera, A.Mainardi, VictoriaArbiza, JuanOrduz, S.Navas, M.C.LICENSElicense.txtlicense.txttext/plain; charset=utf-84267http://localhost:8080/xmlui/bitstream/20.500.12008/28483/5/license.txt6429389a7df7277b72b7924fdc7d47a9MD55CC-LICENSElicense_urllicense_urltext/plain; charset=utf-844http://localhost:8080/xmlui/bitstream/20.500.12008/28483/2/license_urla0ebbeafb9d2ec7cbb19d7137ebc392cMD52license_textlicense_texttext/html; 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- Universidad de la Repúblicafalse
spellingShingle Cell culture isolation of Hepatitis E Virus Genotype 3 Strain obtained from human feces
Quintero Gil, C.
A549 cells
Hepevirus
Isolation
RNA virus
status_str publishedVersion
title Cell culture isolation of Hepatitis E Virus Genotype 3 Strain obtained from human feces
title_full Cell culture isolation of Hepatitis E Virus Genotype 3 Strain obtained from human feces
title_fullStr Cell culture isolation of Hepatitis E Virus Genotype 3 Strain obtained from human feces
title_full_unstemmed Cell culture isolation of Hepatitis E Virus Genotype 3 Strain obtained from human feces
title_short Cell culture isolation of Hepatitis E Virus Genotype 3 Strain obtained from human feces
title_sort Cell culture isolation of Hepatitis E Virus Genotype 3 Strain obtained from human feces
topic A549 cells
Hepevirus
Isolation
RNA virus
url https://hdl.handle.net/20.500.12008/28483