Evidence map›Paper›PMID 23269804›Full record

ArticleJournal of virology2013

Biophysical and ultrastructural characterization of adeno-associated virus capsid uncoating and genome release.

Eric D Horowitz, K Shefaet Rahman, Brian D Bower, David J Dismuke, Michael R Falvo, Jack D Griffith, Stephen C Harvey, Aravind Asokan

Abstract read
In one paragraph

Article in Journal of virology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

81 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. pH-dependent DNA degradation pathways for adeno-associated virus gene therapy.Molecular therapy. Methods & clinical development · 2025
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. A novel platform for engineered AAV-based vaccines.Molecular therapy. Methods & clinical development · 2025
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

21 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Eric D HorowitzGene Therapy Center, University of North Carolina, Chapel Hill, NC, USA.
K Shefaet Rahman
Brian D Bower
David J Dismuke
Michael R Falvo
Jack D Griffith
Stephen C Harvey
Aravind Asokan

Funding

Virology Research Program (Program 4)P30CA016086 · NCI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI Deborah F. Tate · 1985 to 2026
$201.5M
Vironomics and Biostatistics CoreP01CA019014 · NCI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI BLOSSOM A DAMANIA, NANCY JOAN RAAB-TRAUB · 1985 to 2026
$43.8M
Determinants of AAV TropismR01HL089221 · NHLBI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI Aravind Asokan · 2009 to 2026
$8.1M
NRSA IN GENETICST32GM007092 · NIGMS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI SEKELSKY, JEFF J. · 1985 to 2019
$5.9M
HOMOLOOUS RECOMBINATION: ITS MOLECULAR CYTOLOGYR01GM031819 · NIGMS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI GRIFFITH, JACK D · 1985 to 2017
$5.2M
Nucleoprotein structures formed at sites of DNA damageR01ES013773 · NIEHS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI GRIFFITH, JACK D · 2005 to 2015
$3.2M
Packaging and Structure of Viral GenomesR01GM070785 · NIGMS · GEORGIA INSTITUTE OF TECHNOLOGY · PI HARVEY, STEPHEN C. · 2004 to 2011
$2.0M
NCI NIH HHS P01 CA019014NCI NIH HHS P30 CA016086NHLBI NIH HHS HL089221NHLBI NIH HHS R01 HL089221NIEHS NIH HHS R01 ES013773NIGMS NIH HHS GM31819NIGMS NIH HHS GM70785NIGMS NIH HHS R01 GM031819NIGMS NIH HHS R01 GM070785NIGMS NIH HHS T32 GM007092
6 · The paper itself

Abstract

We describe biophysical and ultrastructural differences in genome release from adeno-associated virus (AAV) capsids packaging wild-type DNA, recombinant single-stranded DNA (ssDNA), or dimeric, self-complementary DNA (scDNA) genomes. Atomic force microscopy and electron microscopy (EM) revealed that AAV particles release packaged genomes and undergo marked changes in capsid morphology upon heating in physiological buffer (pH 7.2). When different AAV capsids packaging ss/scDNA varying in length from 72 to 123% of wild-type DNA (3.4 to 5.8 kb) were incrementally heated, the proportion of uncoated AAV capsids decreased with genome length as observed by EM. Genome release was further characterized by a fluorimetric assay, which demonstrated that acidic pH and high osmotic pressure suppress genome release from AAV particles. In addition, fluorimetric analysis corroborated an inverse correlation between packaged genome length and the temperature needed to induce uncoating. Surprisingly, scAAV vectors required significantly higher temperatures to uncoat than their ssDNA-packaging counterparts. However, externalization of VP1 N termini appears to be unaffected by packaged genome length or self-complementarity. Further analysis by tungsten-shadowing EM revealed striking differences in the morphologies of ssDNA and scDNA genomes upon release from intact capsids. Computational modeling and molecular dynamics simulations suggest that the unusual thermal stability of scAAV vectors might arise from partial base pairing and optimal organization of packaged scDNA. Our work further defines the biophysical mechanisms underlying adeno-associated virus uncoating and genome release.

Indexed as

Virus UncoatingCapsidDependovirusDNA, ViralFluorometryHot TemperatureHydrogen-Ion ConcentrationMicroscopy, Atomic ForceMicroscopy, ElectronOsmotic PressureDNA, Viral

Identifiers

PMID23269804
PMCPMC3592113

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.