Evidence map›Paper›PMID 22467572›Full record

ArticleInvestigative ophthalmology & visual science2012

Nanoparticle-mediated delivery of shRNA.VEGF-a plasmids regresses corneal neovascularization.

Yureeda Qazi, Brian Stagg, Nirbhai Singh, Swita Singh, Xiaohui Zhang, Ling Luo, Jacquelyn Simonis, Uday B Kompella, Balamurali K Ambati

Open access · bronzeAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
5.2field-weighted citation impact, top 4% 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

25 citing papers in PubMed, 59 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Review
  5. Article
  6. Gene Therapy in the Anterior Eye Segment.Current gene therapy · 2022
    Review
  7. Review
  8. Novel insights into gene therapy in the cornea.Experimental eye research · 2021
    Review
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Progress in corneal wound healing.Progress in retinal and eye research · 2015
    Review
  15. Curcumin nanoparticles inhibit corneal neovascularization.Journal of molecular medicine (Berlin, Germany) · 2015
    Article
  16. Nanoengineering of therapeutics for retinal vascular disease.European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V · 2015
    Review
  17. Nanomedicine approaches for corneal diseases.Journal of functional biomaterials · 2015
    Review
  18. Review
  19. Review
  20. Article
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

9 authors at 3 institutions in 2 countries.

Yureeda QaziJohn A. Moran Eye Center, Salt Lake City, UT 84132, USA.
Brian Stagg
Nirbhai Singh
Swita Singh
Xiaohui Zhang
Ling Luo
Jacquelyn Simonis
Uday B Kompella
Balamurali K Ambati
Eye Center · SAUniversity of Colorado Denver · USUniversity of Utah · US

Funding

University of Utah, Core Vision Research GrantP30EY014800 · NEI · UTAH STATE HIGHER EDUCATION SYSTEM--UNIVERSITY OF UTAH · PI PAUL STEVEN BERNSTEIN · 2005 to 2026
$14.6M
The Role of Soluble Flt-1 and Raver2 in Ocular Vascular DemarcationsR01EY017950 · NEI · UNIVERSITY OF UTAH · PI AMBATI, BALAMURALI K · 2008 to 2021
$5.2M
Intraceptor Interference of VEGF PathwaysR01EY017182 · NEI · UNIVERSITY OF UTAH · PI AMBATI, BALAMURALI K · 2007 to 2017
$3.6M
NEI NIH HHS 5R01EY017182NEI NIH HHS 5R01EY017950NEI NIH HHS P30 EY014800NEI NIH HHS R01 EY017182NEI NIH HHS R01 EY017950
6 · The paper itself

Abstract

purposeTo determine the efficacy of a plasmid containing a small hairpin RNA expression cassette (pSEC.shRNA) against VEGF-A-loaded poly(lactic co-glycolic acid) nanoparticles (PLGA NPs) in the sustained regression of murine corneal neovascularization.

methodsPLGA nanoparticles were loaded with pSEC.shRNA.VEGF-A plasmids using the double emulsion-solvent evaporation method. KNV was induced in BALB/c mice by mechanical-alkali injury. Four weeks after induction of KNV, the mice were randomly divided to receive one of four treatments intrastromally: pSEC.shRNA.VEGF-A PLGA NPs (2 μg plasmid); naked pSEC.shRNA.VEGF-A plasmid only (2 μg plasmid); control blank PLGA NPs (equivalent dry weight of NPs); and vehicle. Two and five days after intervention, corneas were harvested to determine VEGF-A gene and protein expression using reverse transcriptase polymerase chain reaction and ELISA, respectively. Four weeks after intervention, corneas were photographed, mice sacrificed, and the corneal whole mounts were immunostained for CD31 (panendothelial cell marker). Immunofluorescence microscopy was performed and the neovascular area was quantitated.

resultsVEGF-A mRNA (49.6 ± 12.4 vs. 82.9 ± 6.0%, P < 0.01) and protein (4.0 ± 5.2 vs. 20.0 ± 7.5 ρg VEGF-A/mg total protein, P < 0.05) expression were significantly reduced in pSEC.shRNA.VEGF-A PLGA NP-treated corneas as compared with control blank NP. The pSEC.shRNA.VEGF-A PLGA NP-treated corneas showed significant regression in the mean fractional areas of KNV (0.125 ± 0.042; 12.5%, P <0.01) compared with both naked plasmid only (0.283 ± 0.004; 28.3%) and control (blank NPs = 0.555 ± 0.072, 55.5%) at 4 weeks post-treatment.

conclusionsThe pSEC.shRNA.VEGF-A-loaded PLGA NPs are an effective, nonviral, nontoxic, and sustainable form of gene therapy for the regression of murine KNV.

Indexed as

AnimalsCorneal NeovascularizationDisease Models, AnimalEnzyme-Linked Immunosorbent AssayGene SilencingMiceMice, Inbred BALB CNanoparticlesPlasmidsReverse Transcriptase Polymerase Chain ReactionRNA, MessengerRNA, Small InterferingTransfectionVascular Endothelial Growth Factor ARNA, MessengerRNA, Small InterferingVascular Endothelial Growth Factor AVEGFA protein, human

Identifiers

PMID22467572
PMCPMC3367470
OpenAlexW2055503132

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.