Cited by 205HIV Research and TreatmentVirus-based gene therapy researchNuclear Structure and Function

Capsid-CPSF6 Interaction Licenses Nuclear HIV-1 Trafficking to Sites of Viral DNA Integration

Open access
Achuthan, Vasudevan, Perreira, Jill M., Sowd, Gregory A., Puray-Chavez, Maritza, McDougall, William M., Paulucci-Holthauzen, Adriana, Wu, Xiaolin, Fadel, Hind J. +6 more·2018·Cell Host & Microbe

Abstract

HIV-1 integration into the host genome favors actively transcribed genes. Prior work indicated that the nuclear periphery provides the architectural basis for integration site selection, with viral capsid-binding host cofactor CPSF6 and viral integrase-binding cofactor LEDGF/p75 contributing to selection of individual sites. Here, by investigating the early phase of infection, we determine that HIV-1 traffics throughout the nucleus for integration. CPSF6-capsid interactions allow the virus to bypass peripheral heterochromatin and penetrate the nuclear structure for integration. Loss of interaction with CPSF6 dramatically alters virus localization toward the nuclear periphery and integration into transcriptionally repressed lamina-associated heterochromatin, while loss of LEDGF/p75 does not significantly affect intranuclear HIV-1 localization. Thus, CPSF6 serves as a master regulator of HIV-1 intranuclear localization by trafficking viral preintegration complexes away from heterochromatin at the periphery toward gene-dense chromosomal regions within the nuclear interior.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.chom.2018.08.002

Cites

78 of 78 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • In CPSF6 knockout cells, pre-integration complexes congregate at the nuclear periphery and target LADs for integration while losing the preference for SPADs.

    “In CPSF6 knockout cells, PICs congregated at the nuclear periphery and uncharacteristically targeted LADs for integration while losing the preference for SPADs84,85.”

    From Structure and function of retroviral integrase (2022) · cites this paper as [85]

    The Results sections on intranuclear localization and LAD integration report that PIC-associated signals were enriched at the nuclear periphery in CPSF6-knockout cells and that LADs became preferred integration targets. Our copy does not report SPAD integration targeting or establish a loss of SPAD preference; its Discussion mentions trafficking to speckles but not that specific result. Page numbers are unavailable in the indexed copy. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • CPSF6 facilitates targeting of HIV-1 PICs to transcriptionally active regions of the genome found deep within the center of the nucleus.

    “Another important host factor identified in retroviral integration is CPSF6 that facilitates targeting of the HIV-1 PICs to transcriptionally active regions of the genome found deep within the center of the nucleus (Rasheedi et al. 2016, Achuthan et al. 2018, Singh et al. 2022a).”

    From Beyond reverse transcription: molecular mechanisms and emerging paradigms in retroviral replication (2026) · cites this paper as Achuthan et al. 2018

    The Introduction and Discussion say CPSF6 helps HIV-1 PICs bypass peripheral heterochromatin and reach transcriptionally active, gene-dense regions in the nuclear interior. But the claim’s placement of those regions deep in the nuclear center is too specific: the Results report avoidance of the central nuclear zone under one set of experimental conditions (page unavailable in our copy). (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • CPSF6 plays a critical role in regulating nuclear pre-integration complex incursion.

    “In addition to its role in nuclear import, CPSF6 plays a critical role in regulating nuclear PIC incursion.”

    From Structure and function of retroviral integrase (2022) · cites this paper as [85]

  • CA facilitates HIV-1 integration into transcriptionally active, gene-rich regions via interacting with CPSF, which helps connect the PIC to intranuclear trafficking pathways to facilitate entry into the inner regions of the nucleus.

    “Further evidence shows that CA facilitates HIV-1 integration into transcriptionally active, gene-rich regions via interacting with CPSF that in fact helps connect the PIC to intranuclear trafficking pathways to facilitate entry into the inner regions of the nucleus (Chin et al. 2015, Achuthan et al. 2018).”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Achuthan, V., Perreira, J. M., Sowd, G. A., Puray-Chavez, M., McDougall, W. M., Paulucci-Holthauzen, A., Wu, X., Fadel, H. J., Poeschla, E. M., Multani, A. S., Hughes, S. H., Sarafianos, S. G., Brass, A. L., & Engelman, A. N.
Affiliations
  • Harvard University (US)
  • University of Massachusetts Chan Medical School (US)
  • The University of Texas MD Anderson Cancer Center (US)
  • Leidos Biomedical Research Inc. (United States) (US)
  • Mayo Clinic (US)
  • University of Colorado Anschutz (US)
  • National Cancer Institute (US)
  • University of Missouri (US)
Corresponding author
  • Brass, Abraham L.
  • Engelman, Alan N.
Venue
Cell Host & Microbe
Publisher
Elsevier BV
Published
2018-09
Volume
24
Issue
3
Pages
392-404.e8
ISSN
1931-3128 (ISSN-L)
OpenAlex
W2889370079
Cited by
205
References
78
Citations by year
2026: 17 · 2025: 26 · 2024: 33 · 2023: 20 · 2022: 22 · 2021: 34 · 2020: 29 · 2019: 22 · 2018: 2
FWCI
11.39
Type
journal article
Language
en
Open access
Locations
  • Cell Host & Microbe (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • NIH (R01 AI052014, R01 AI077344, P30 AI060354, T32 AI007245)
  • NCI
  • Bill and Melinda Gates Foundation (OPP1097381)
Topics
  • Life Sciences › Immunology and Microbiology › Virology › HIV Research and Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nuclear Structure and Function
Keywords
HIV-1, capsid, CPSF6, LEDGF/p75, preintegration complex, nuclear trafficking, heterochromatin, nuclear periphery, viral DNA integration, host cofactors
MeSH terms
Capsid, Cell Nucleus, DNA, Viral, Humans, Protein Binding, Virus Replication, HIV-1, HIV Infections, Virus Integration, Intercellular Signaling Peptides and Proteins, mRNA Cleavage and Polyadenylation Factors, Host-Pathogen Interactions

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review