Cited by 45RNA Research and SplicingNuclear Structure and FunctionHIV Research and Treatment

Foamy virus nuclear RNA export is distinct from that of other retroviruses

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Bodem, Jochen, Schied, Tanja, Gabriel, Richard, Rammling, Matthias, Rethwilm, Axel·2011·Journal of Virology

Abstract

Most retroviruses express all of their genes from a single primary transcript. In order to allow expression of more than one gene from this RNA, differential splicing is extensively used. Cellular quality control mechanisms retain and degrade unspliced or partially spliced RNAs in the nucleus. Two pathways have been described that explain how retroviruses circumvent this nuclear export inhibition. One involves a constitutive transport element in the viral RNA that interacts with the cellular mRNA transporter proteins NXF1 and NXT1 to facilitate nuclear export. The other pathway relies on the recognition of a viral RNA element by a virus-encoded protein that interacts with the karyopherin CRM1. In this report, we analyze the protein factors required for the nuclear export of unspliced foamy virus (FV) mRNA. We show that this export is CRM1 dependent. In contrast to other complex retroviruses, FVs do not encode an export-mediating protein. Cross-linking experiments indicated that the cellular protein HuR binds to the FV RNA. Inhibition studies showed that both ANP32A and ANP32B, which are known to bridge HuR and CRM1, are essential for FV RNA export. By using this export pathway, FVs solve a central problem of viral replication.

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Crossref · 10.1128/jvi.01518-10

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  • Prototype foamy virus achieves nuclear export of its unspliced RNA by interacting with HuR, a ubiquitously expressed nuclear RNA-binding shuttle protein involved in nuclear export of AU-rich elements-containing cellular mRNAs.

    “The prototype foamy virus achieves nuclear export of its unspliced RNA by interacting with human antigen R (HuR), a ubiquitously expressed nuclear RNA-binding shuttle protein known to be involved in the nuclear export of AU-rich elements-containing cellular mRNAs (Fig. 9) (Fan and Steitz 1998, Bodem et al. 2011).”

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Authors
Bodem, J., Schied, T., Gabriel, R., Rammling, M., & Rethwilm, A.
Affiliations
University of Würzburg (DE)
Corresponding author
  • Bodem, Jochen
  • Rethwilm, Axel
Venue
Journal of Virology
Published
2011-03
Volume
85
Issue
5
Pages
2333-2341
ISSN
  • 0022-538X (ISSN-L)
  • 1098-5514
OpenAlex
W1979912914
Cited by
44
References
77
Citations by year
2025: 1 · 2024: 2 · 2023: 3 · 2022: 1 · 2021: 1 · 2020: 3 · 2019: 5 · 2018: 1 · 2017: 1 · 2016: 2 · 2015: 2 · 2014: 7 · 2013: 5 · 2012: 3
FWCI
1.96
Type
journal article
Language
en
Open access
Locations
  • Journal of Virology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Deutsche Forschungsgemeinschaft (SFB479)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nuclear Structure and Function
  • Life Sciences › Immunology and Microbiology › Virology › HIV Research and Treatment
Keywords
foamy virus, nuclear RNA export, CRM1, karyopherins, HuR, ANP32A, ANP32B, unspliced viral RNA, differential splicing, retroviral gene expression, NXF1, constitutive transport element
MeSH terms
Exportin 1 Protein, Cell Nucleus, Humans, Retroviridae, Retroviridae Infections, RNA, Viral, Spumavirus, Receptors, Cytoplasmic and Nuclear, Active Transport, Cell Nucleus, Karyopherins, RNA Transport, HEK293 Cells

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