Evidence map›Paper›PMID 26836117›Full record

ArticleGene therapy2016

Exosome-associated AAV vector as a robust and convenient neuroscience tool.

E Hudry, C Martin, S Gandhi, B György, D I Scheffer, D Mu, S F Merkel, F Mingozzi, Z Fitzpatrick, H Dimant and 7 more

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in Gene therapy, 2016. 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 81 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed, 1 pooled it
7.5field-weighted citation impact, top 2% 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

81 citing papers in PubMed, 1 synthesis or guideline pooled it, 142 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Extracellular vesicles-associated AAVs for the treatment of Machado-Joseph disease.Molecular therapy : the journal of the American Society of Gene Therapy · 2026
    Article
  9. Review
  10. Review
  11. Intracellular and Extracellular Vesicle miRNA Signatures in Human iPSC-Derived Neural Stem Cells and Floor Plate Progenitors.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article
  12. Article
  13. The curious case of AAV immunology.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Review
  14. Article
  15. Article
  16. Gene Therapy Techniques and Delivery Methods (Review).Sovremennye tekhnologii v meditsine · 2025
    Review
  17. Review
  18. Article
  19. Review
  20. Review

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

17 authors at 5 institutions in 2 countries.

E HudryAlzheimer Research Unit, The Massachusetts General Hospital Institute for Neurodegenerative Disease, Charlestown, MA, USA.
C MartinAlzheimer Research Unit, The Massachusetts General Hospital Institute for Neurodegenerative Disease, Charlestown, MA, USA.
S GandhiAlzheimer Research Unit, The Massachusetts General Hospital Institute for Neurodegenerative Disease, Charlestown, MA, USA.
B GyörgyDepartment of Neurology, The Massachusetts General Hospital and NeuroDiscovery Center, Harvard Medical School, Boston, MA, USA.
D I SchefferDepartment of Neurobiology, Harvard Medical School, Boston, MA, USA.
D MuDepartment of Neurology, The Massachusetts General Hospital and NeuroDiscovery Center, Harvard Medical School, Boston, MA, USA.
S F MerkelDepartment of Pathology and Laboratory Medicine, Temple University School of Medicine, Philadelphia, PA, USA.
F MingozziGenethon, Evry, France.
Z FitzpatrickDepartment of Neurology, The Massachusetts General Hospital and NeuroDiscovery Center, Harvard Medical School, Boston, MA, USA.
H DimantTissueVision, Inc., Cambridge, MA, USA.
M MasekTissueVision, Inc., Cambridge, MA, USA.
T RaganTissueVision, Inc., Cambridge, MA, USA.
S TanUMR-CBMN CNRS-University of Bordeaux, Pessac, France.
A R BrissonUMR-CBMN CNRS-University of Bordeaux, Pessac, France.
S H RamirezDepartment of Pathology and Laboratory Medicine, Temple University School of Medicine, Philadelphia, PA, USA.
B T HymanAlzheimer Research Unit, The Massachusetts General Hospital Institute for Neurodegenerative Disease, Charlestown, MA, USA.
C A MaguireDepartment of Neurology, The Massachusetts General Hospital and NeuroDiscovery Center, Harvard Medical School, Boston, MA, USA.
Harvard University · USTissueVision (United States) · USCentre National de la Recherche Scientifique · FRTemple University · USGenethon (France) · FR

Funding

Pilot Projects Core (PPC)P30DA013429 · NIDA · TEMPLE UNIV OF THE COMMONWEALTH · PI Munir Gunes Kutlu · 2000 to 2026
$34.6M
Interdepartmental Neuroscience CenterP30NS045776 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI BREAKEFIELD, XANDRA OWENS, TANNOUS, BAKHOS A · 2003 to 2018
$11.1M
Novel Strategies and Mechanisms to Target APOE and Alzheimer's DiseaseRF1AG047644 · NIA · WASHINGTON UNIVERSITY · PI HOLTZMAN, DAVID M., HYMAN, BRADLEY T. · 2019 to 2019
$3.8M
Novel Strategies and Mechanisms to Target APOE and Alzheimer's DiseaseR01AG047644 · NIA · WASHINGTON UNIVERSITY · PI HOLTZMAN, DAVID M. · 2014 to 2018
$2.8M
Novel serological biomarkers for BBB dysfunction during HIV-1 infectionR01NS086570 · NINDS · TEMPLE UNIV OF THE COMMONWEALTH · PI RAMIREZ, SERVIO HEYBERT · 2013 to 2017
$1.9M
Role of apolipoprotein E in age and amyloid beta related neuronal dysfunctionR00AG047336 · NIA · MASSACHUSETTS GENERAL HOSPITAL · PI HUDRY, ELOISE · 2017 to 2019
$747k
A hybrid microvesicle/virus vector for targeted gene transfer to the brainR21NS081374 · NINDS · MASSACHUSETTS GENERAL HOSPITAL · PI MAGUIRE, CASEY A · 2012 to 2013
$449k
Role of apolipoprotein E in age and amyloid beta related neuronal dysfunctionK99AG047336 · NIA · MASSACHUSETTS GENERAL HOSPITAL · PI HUDRY, ELOISE · 2015 to 2016
$273k
NIA NIH HHS K99 AG047336NIA NIH HHS R00 AG047336NIA NIH HHS RF1 AG047644NIDA NIH HHS P30 DA013429NINDS NIH HHS NIH/NINDS R01 NS086570-01NINDS NIH HHS NIH/NINDS R21 NS081374-01NINDS NIH HHS P30 NS045776NINDS NIH HHS R01 NS086570NINDS NIH HHS R21 NS081374
6 · The paper itself

Abstract

Adeno-associated virus (AAV) vectors are showing promise in gene therapy trials and have proven to be extremely efficient biological tools in basic neuroscience research. One major limitation to their widespread use in the neuroscience laboratory is the cost, labor, skill and time-intense purification process of AAV. We have recently shown that AAV can associate with exosomes (exo-AAV) when the vector is isolated from conditioned media of producer cells, and the exo-AAV is more resistant to neutralizing anti-AAV antibodies compared with standard AAV. Here, we demonstrate that simple pelleting of exo-AAV from media via ultracentrifugation results in high-titer vector preparations capable of efficient transduction of central nervous system (CNS) cells after systemic injection in mice. We observed that exo-AAV is more efficient at gene delivery to the brain at low vector doses relative to conventional AAV, even when derived from a serotype that does not normally efficiently cross the blood-brain barrier. Similar cell types were transduced by exo-AAV and conventionally purified vector. Importantly, no cellular toxicity was noted in exo-AAV-transduced cells. We demonstrated the utility and robustness of exo-AAV-mediated gene delivery by detecting direct GFP fluorescence after systemic injection, allowing three-dimensional reconstruction of transduced Purkinje cells in the cerebellum using ex vivo serial two-photon tomography. The ease of isolation combined with the high efficiency of transgene expression in the CNS, may enable the widespread use of exo-AAV as a neuroscience research tool. Furthermore, the ability of exo-AAV to evade neutralizing antibodies while still transducing CNS after peripheral delivery is clinically relevant.

Indexed as

ExosomesAnimalsAntibodies, NeutralizingBlood-Brain BarrierBrainCell LineDependovirusGenetic TherapyGenetic VectorsGene Transfer TechniquesHumansMiceTransduction, GeneticTransgenesAntibodies, Neutralizing

Identifiers

PMID26836117
PMCPMC4824662
OpenAlexW2292311115

What OpenQuestion holds

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Registered trials

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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.