Novel Staufen1 ribonucleoproteins prevent formation of stress granules but favour encapsidation of HIV-1 genomic RNA
- Autores
- Abrahamyan, Levon G.; Chatel Chaix, Laurent; Ajamian, Lara; Milev, Miroslav P.; Monette, Anne; Clément, Jean François; Song, Rujun; Lehmann, Martin; DesGroseillers, Luc; Laughrea, Michael; Boccaccio, Graciela Lidia; Mouland, Andrew J.
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Human immunodeficiency virus type 1 (HIV-1) Gag selects for and mediates genomic RNA (vRNA) encapsidation into progeny virus particles. The host protein, Staufen1 interacts directly with Gag and is found in ribonucleoprotein (RNP) complexes containing vRNA, which provides evidence that Staufen1 plays a role in vRNA selection and encapsidation. In this work, we show that Staufen1, vRNA and Gag are found in the same RNP complex. These cellular and viral factors also colocalize in cells and constitute novel Staufen1 RNPs (SHRNPs) whose assembly is strictly dependent on HIV-1 expression. SHRNPs are distinct from stress granules and processing bodies, are preferentially formed during oxidative stress and are found to be in equilibrium with translating polysomes. Moreover, SHRNPs are stable, and the association between Staufen1 and vRNA was found to be evident in these and other types of RNPs. We demonstrate that following Staufen1 depletion, apparent supraphysiologic-sized SHRNP foci are formed in the cytoplasm and in which Gag, vRNA and the residual Staufen1 accumulate. The depletion of Staufen1 resulted in reduced Gag levels and deregulated the assembly of newly synthesized virions, which were found to contain several-fold increases in vRNA, Staufen1 and other cellular proteins. This work provides new evidence that Staufen1-containing HIV-1 RNPs preferentially form over other cellular silencing foci and are involved in assembly, localization and encapsidation of vRNA.
Fil: Abrahamyan, Levon G.. Davis Jewish General Hospital; Canadá
Fil: Chatel Chaix, Laurent. Davis Jewish General Hospital; Canadá
Fil: Ajamian, Lara. Mc Gill University; Canadá. Davis Jewish General Hospital; Canadá
Fil: Milev, Miroslav P.. Mc Gill University; Canadá. Davis Jewish General Hospital; Canadá
Fil: Monette, Anne. Mc Gill University; Canadá. Davis Jewish General Hospital; Canadá
Fil: Clément, Jean François. Davis Jewish General Hospital; Canadá
Fil: Song, Rujun. Mc Gill University; Canadá. Davis Jewish General Hospital; Canadá
Fil: Lehmann, Martin. Davis Jewish General Hospital; Canadá
Fil: DesGroseillers, Luc. University Of Montreal; Canadá
Fil: Laughrea, Michael. Mc Gill University; Canadá. Davis Jewish General Hospital; Canadá
Fil: Boccaccio, Graciela Lidia. Fundación Instituto Leloir; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquimicas de Buenos Aires; Argentina
Fil: Mouland, Andrew J.. Mc Gill University; Canadá. Davis Jewish General Hospital; Canadá - Materia
-
HIV
Staufen
Stress Granule
capside - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/15285
Ver los metadatos del registro completo
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oai:ri.conicet.gov.ar:11336/15285 |
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3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Novel Staufen1 ribonucleoproteins prevent formation of stress granules but favour encapsidation of HIV-1 genomic RNAAbrahamyan, Levon G.Chatel Chaix, LaurentAjamian, LaraMilev, Miroslav P.Monette, AnneClément, Jean FrançoisSong, RujunLehmann, MartinDesGroseillers, LucLaughrea, MichaelBoccaccio, Graciela LidiaMouland, Andrew J.HIVStaufenStress Granulecapsidehttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Human immunodeficiency virus type 1 (HIV-1) Gag selects for and mediates genomic RNA (vRNA) encapsidation into progeny virus particles. The host protein, Staufen1 interacts directly with Gag and is found in ribonucleoprotein (RNP) complexes containing vRNA, which provides evidence that Staufen1 plays a role in vRNA selection and encapsidation. In this work, we show that Staufen1, vRNA and Gag are found in the same RNP complex. These cellular and viral factors also colocalize in cells and constitute novel Staufen1 RNPs (SHRNPs) whose assembly is strictly dependent on HIV-1 expression. SHRNPs are distinct from stress granules and processing bodies, are preferentially formed during oxidative stress and are found to be in equilibrium with translating polysomes. Moreover, SHRNPs are stable, and the association between Staufen1 and vRNA was found to be evident in these and other types of RNPs. We demonstrate that following Staufen1 depletion, apparent supraphysiologic-sized SHRNP foci are formed in the cytoplasm and in which Gag, vRNA and the residual Staufen1 accumulate. The depletion of Staufen1 resulted in reduced Gag levels and deregulated the assembly of newly synthesized virions, which were found to contain several-fold increases in vRNA, Staufen1 and other cellular proteins. This work provides new evidence that Staufen1-containing HIV-1 RNPs preferentially form over other cellular silencing foci and are involved in assembly, localization and encapsidation of vRNA.Fil: Abrahamyan, Levon G.. Davis Jewish General Hospital; CanadáFil: Chatel Chaix, Laurent. Davis Jewish General Hospital; CanadáFil: Ajamian, Lara. Mc Gill University; Canadá. Davis Jewish General Hospital; CanadáFil: Milev, Miroslav P.. Mc Gill University; Canadá. Davis Jewish General Hospital; CanadáFil: Monette, Anne. Mc Gill University; Canadá. Davis Jewish General Hospital; CanadáFil: Clément, Jean François. Davis Jewish General Hospital; CanadáFil: Song, Rujun. Mc Gill University; Canadá. Davis Jewish General Hospital; CanadáFil: Lehmann, Martin. Davis Jewish General Hospital; CanadáFil: DesGroseillers, Luc. University Of Montreal; CanadáFil: Laughrea, Michael. Mc Gill University; Canadá. Davis Jewish General Hospital; CanadáFil: Boccaccio, Graciela Lidia. Fundación Instituto Leloir; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquimicas de Buenos Aires; ArgentinaFil: Mouland, Andrew J.. Mc Gill University; Canadá. Davis Jewish General Hospital; CanadáCompany Of Biologists2010-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/15285Abrahamyan, Levon G.; Chatel Chaix, Laurent; Ajamian, Lara; Milev, Miroslav P.; Monette, Anne; et al.; Novel Staufen1 ribonucleoproteins prevent formation of stress granules but favour encapsidation of HIV-1 genomic RNA; Company Of Biologists; Journal Of Cell Science; 123; Pte 3; 2-2010; 369-3831477-9137enginfo:eu-repo/semantics/altIdentifier/url/http://jcs.biologists.org/content/123/3/369.longinfo:eu-repo/semantics/altIdentifier/doi/10.1242/jcs.055897info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:12:08Zoai:ri.conicet.gov.ar:11336/15285instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:12:08.928CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Novel Staufen1 ribonucleoproteins prevent formation of stress granules but favour encapsidation of HIV-1 genomic RNA |
title |
Novel Staufen1 ribonucleoproteins prevent formation of stress granules but favour encapsidation of HIV-1 genomic RNA |
spellingShingle |
Novel Staufen1 ribonucleoproteins prevent formation of stress granules but favour encapsidation of HIV-1 genomic RNA Abrahamyan, Levon G. HIV Staufen Stress Granule capside |
title_short |
Novel Staufen1 ribonucleoproteins prevent formation of stress granules but favour encapsidation of HIV-1 genomic RNA |
title_full |
Novel Staufen1 ribonucleoproteins prevent formation of stress granules but favour encapsidation of HIV-1 genomic RNA |
title_fullStr |
Novel Staufen1 ribonucleoproteins prevent formation of stress granules but favour encapsidation of HIV-1 genomic RNA |
title_full_unstemmed |
Novel Staufen1 ribonucleoproteins prevent formation of stress granules but favour encapsidation of HIV-1 genomic RNA |
title_sort |
Novel Staufen1 ribonucleoproteins prevent formation of stress granules but favour encapsidation of HIV-1 genomic RNA |
dc.creator.none.fl_str_mv |
Abrahamyan, Levon G. Chatel Chaix, Laurent Ajamian, Lara Milev, Miroslav P. Monette, Anne Clément, Jean François Song, Rujun Lehmann, Martin DesGroseillers, Luc Laughrea, Michael Boccaccio, Graciela Lidia Mouland, Andrew J. |
author |
Abrahamyan, Levon G. |
author_facet |
Abrahamyan, Levon G. Chatel Chaix, Laurent Ajamian, Lara Milev, Miroslav P. Monette, Anne Clément, Jean François Song, Rujun Lehmann, Martin DesGroseillers, Luc Laughrea, Michael Boccaccio, Graciela Lidia Mouland, Andrew J. |
author_role |
author |
author2 |
Chatel Chaix, Laurent Ajamian, Lara Milev, Miroslav P. Monette, Anne Clément, Jean François Song, Rujun Lehmann, Martin DesGroseillers, Luc Laughrea, Michael Boccaccio, Graciela Lidia Mouland, Andrew J. |
author2_role |
author author author author author author author author author author author |
dc.subject.none.fl_str_mv |
HIV Staufen Stress Granule capside |
topic |
HIV Staufen Stress Granule capside |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Human immunodeficiency virus type 1 (HIV-1) Gag selects for and mediates genomic RNA (vRNA) encapsidation into progeny virus particles. The host protein, Staufen1 interacts directly with Gag and is found in ribonucleoprotein (RNP) complexes containing vRNA, which provides evidence that Staufen1 plays a role in vRNA selection and encapsidation. In this work, we show that Staufen1, vRNA and Gag are found in the same RNP complex. These cellular and viral factors also colocalize in cells and constitute novel Staufen1 RNPs (SHRNPs) whose assembly is strictly dependent on HIV-1 expression. SHRNPs are distinct from stress granules and processing bodies, are preferentially formed during oxidative stress and are found to be in equilibrium with translating polysomes. Moreover, SHRNPs are stable, and the association between Staufen1 and vRNA was found to be evident in these and other types of RNPs. We demonstrate that following Staufen1 depletion, apparent supraphysiologic-sized SHRNP foci are formed in the cytoplasm and in which Gag, vRNA and the residual Staufen1 accumulate. The depletion of Staufen1 resulted in reduced Gag levels and deregulated the assembly of newly synthesized virions, which were found to contain several-fold increases in vRNA, Staufen1 and other cellular proteins. This work provides new evidence that Staufen1-containing HIV-1 RNPs preferentially form over other cellular silencing foci and are involved in assembly, localization and encapsidation of vRNA. Fil: Abrahamyan, Levon G.. Davis Jewish General Hospital; Canadá Fil: Chatel Chaix, Laurent. Davis Jewish General Hospital; Canadá Fil: Ajamian, Lara. Mc Gill University; Canadá. Davis Jewish General Hospital; Canadá Fil: Milev, Miroslav P.. Mc Gill University; Canadá. Davis Jewish General Hospital; Canadá Fil: Monette, Anne. Mc Gill University; Canadá. Davis Jewish General Hospital; Canadá Fil: Clément, Jean François. Davis Jewish General Hospital; Canadá Fil: Song, Rujun. Mc Gill University; Canadá. Davis Jewish General Hospital; Canadá Fil: Lehmann, Martin. Davis Jewish General Hospital; Canadá Fil: DesGroseillers, Luc. University Of Montreal; Canadá Fil: Laughrea, Michael. Mc Gill University; Canadá. Davis Jewish General Hospital; Canadá Fil: Boccaccio, Graciela Lidia. Fundación Instituto Leloir; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquimicas de Buenos Aires; Argentina Fil: Mouland, Andrew J.. Mc Gill University; Canadá. Davis Jewish General Hospital; Canadá |
description |
Human immunodeficiency virus type 1 (HIV-1) Gag selects for and mediates genomic RNA (vRNA) encapsidation into progeny virus particles. The host protein, Staufen1 interacts directly with Gag and is found in ribonucleoprotein (RNP) complexes containing vRNA, which provides evidence that Staufen1 plays a role in vRNA selection and encapsidation. In this work, we show that Staufen1, vRNA and Gag are found in the same RNP complex. These cellular and viral factors also colocalize in cells and constitute novel Staufen1 RNPs (SHRNPs) whose assembly is strictly dependent on HIV-1 expression. SHRNPs are distinct from stress granules and processing bodies, are preferentially formed during oxidative stress and are found to be in equilibrium with translating polysomes. Moreover, SHRNPs are stable, and the association between Staufen1 and vRNA was found to be evident in these and other types of RNPs. We demonstrate that following Staufen1 depletion, apparent supraphysiologic-sized SHRNP foci are formed in the cytoplasm and in which Gag, vRNA and the residual Staufen1 accumulate. The depletion of Staufen1 resulted in reduced Gag levels and deregulated the assembly of newly synthesized virions, which were found to contain several-fold increases in vRNA, Staufen1 and other cellular proteins. This work provides new evidence that Staufen1-containing HIV-1 RNPs preferentially form over other cellular silencing foci and are involved in assembly, localization and encapsidation of vRNA. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-02 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/15285 Abrahamyan, Levon G.; Chatel Chaix, Laurent; Ajamian, Lara; Milev, Miroslav P.; Monette, Anne; et al.; Novel Staufen1 ribonucleoproteins prevent formation of stress granules but favour encapsidation of HIV-1 genomic RNA; Company Of Biologists; Journal Of Cell Science; 123; Pte 3; 2-2010; 369-383 1477-9137 |
url |
http://hdl.handle.net/11336/15285 |
identifier_str_mv |
Abrahamyan, Levon G.; Chatel Chaix, Laurent; Ajamian, Lara; Milev, Miroslav P.; Monette, Anne; et al.; Novel Staufen1 ribonucleoproteins prevent formation of stress granules but favour encapsidation of HIV-1 genomic RNA; Company Of Biologists; Journal Of Cell Science; 123; Pte 3; 2-2010; 369-383 1477-9137 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/http://jcs.biologists.org/content/123/3/369.long info:eu-repo/semantics/altIdentifier/doi/10.1242/jcs.055897 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Company Of Biologists |
publisher.none.fl_str_mv |
Company Of Biologists |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
_version_ |
1844614025854320640 |
score |
13.070432 |