Evidence map›Paper›PMID 22593150›Full record

ArticleJournal of virology2012

Mapping a neutralizing epitope onto the capsid of adeno-associated virus serotype 8.

Brittney L Gurda, Christina Raupp, Ruth Popa-Wagner, Matthias Naumer, Norman H Olson, Robert Ng, Robert McKenna, Timothy S Baker, Jürgen A Kleinschmidt, Mavis Agbandje-McKenna

Erratum issuedOpen access · bronzeAbstract read
In one paragraph

Article in Journal of virology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 76 papers.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed
5.8field-weighted citation impact, top 3% of its field
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

76 citing papers in PubMed, 92 citations in OpenAlex.

  1. Article
  2. The amazing AAV capsids: Into the structure-verse.Molecular therapy. Methods & clinical development · 2025
    Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. Rationally engineered novel AAV capsids for intra-articular gene delivery.Molecular therapy. Methods & clinical development · 2024
    Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Review
  18. Article
  19. Strategies to improve safety profile of AAV vectors.Frontiers in molecular medicine · 2022
    Review
  20. Article

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 4 institutions in 2 countries.

Brittney L GurdaDepartment of Biochemistry and Molecular Biology, University of Florida, Gainesville, Florida, USA.
Christina Raupp
Ruth Popa-Wagner
Matthias Naumer
Norman H Olson
Robert Ng
Robert McKenna
Timothy S Baker
Jürgen A Kleinschmidt
Mavis Agbandje-McKenna
University of Florida · USGerman Cancer Research Center · DEUniversity of California, San Diego · USHeidelberg University · DE

Funding

XRAY CRYSTALLOGRAPHIC STRUCTURE ANALYSIS: PROTEIN SORTINGP41RR001081 · NCRR · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI BABBITT, PATRICIA CLEMENT · 1985 to 2011
$17.6M
Resource for Biocomputing Visualization and InformaticsP41GM103311 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI FERRIN, THOMAS E · 2012 to 2017
$8.2M
Structural studies of AAV capsids and their glycan receptor interactionsR01GM082946 · NIGMS · UNIVERSITY OF FLORIDA · PI ROBERT MCKENNA · 2007 to 2026
$6.1M
Microscopy &Image Analysis of Unstained MacromoleculesR37GM033050 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI BAKER, TIMOTHY S · 2004 to 2013
$5.6M
TRANSMISSION ELECTRON MICROSCOPE: STRUCTURAL &CELL BIOL: MEMBRANE TRANSPORT, GAS10RR020016 · NCRR · UNIVERSITY OF CALIFORNIA SAN DIEGO · PI BAKER, TIMOTHY S · 2004 to 2004
$2.0M
Antigenic structure of adeno-associated virus capsids and antibody escape mutantsR21AI072341 · NIAID · CORNELL UNIVERSITY · PI PARRISH, COLIN R. · 2007 to 2008
$417k
NCRR NIH HHS 1S10RR020016NCRR NIH HHS 2P41RR001081NCRR NIH HHS P41 RR001081NCRR NIH HHS S10 RR020016NIAID NIH HHS R21 AI072341NIAID NIH HHS R21AI072341NIGMS NIH HHS 9P41GM103311NIGMS NIH HHS P41 GM103311NIGMS NIH HHS R01 GM082946NIGMS NIH HHS R37 GM033050
6 · The paper itself

Abstract

Adeno-associated viruses (AAVs) are small single-stranded DNA viruses that can package and deliver nongenomic DNA for therapeutic gene delivery. AAV8, a liver-tropic vector, has shown great promise for the treatment of hemophilia A and B. However, as with other AAV vectors, host anti-capsid immune responses are a deterrent to therapeutic success. To characterize the antigenic structure of this vector, cryo-electron microscopy and image reconstruction (cryo-reconstruction) combined with molecular genetics, biochemistry, and in vivo approaches were used to define an antigenic epitope on the AAV8 capsid surface for a neutralizing monoclonal antibody, ADK8. Docking of the crystal structures of AAV8 and a generic Fab into the cryo-reconstruction for the AAV8-ADK8 complex identified a footprint on the prominent protrusions that flank the 3-fold axes of the icosahedrally symmetric capsid. Mutagenesis and cell-binding studies, along with in vitro and in vivo transduction assays, showed that the major ADK8 epitope is formed by an AAV variable region, VRVIII (amino acids 586 to 591 [AAV8 VP1 numbering]), which lies on the surface of the protrusions facing the 3-fold axis. This region plays a role in AAV2 and AAV8 cellular transduction. Coincidently, cell binding and trafficking assays indicate that ADK8 affects a postentry step required for successful virus trafficking to the nucleus, suggesting a probable mechanism of neutralization. This structure-directed strategy for characterizing the antigenic regions of AAVs can thus generate useful information to help re-engineer vectors that escape host neutralization and are hence more efficacious.

Indexed as

Epitope MappingActive Transport, Cell NucleusAnimalsAntibodies, ViralAntigens, ViralCapsid ProteinsCell NucleusCrystallography, X-RayDependovirusFemaleGene Transfer TechniquesHEK293 CellsHeLa CellsHep G2 CellsHumansImmunoglobulin Fab FragmentsAntibodies, ViralAntigens, ViralCapsid ProteinsImmunoglobulin Fab Fragments

Identifiers

PMID22593150
PMCPMC3421660
OpenAlexW2133251787

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.