Evidence map›Paper›PMID 19789652›Full record

ArticlePloS one2009

Skin electroporation: effects on transgene expression, DNA persistence and local tissue environment.

Anna-Karin Roos, Fredrik Eriksson, James A Timmons, Josefine Gerhardt, Ulrika Nyman, Lindvi Gudmundsdotter, Andreas Bråve, Britta Wahren, Pavel Pisa

Abstract read
In one paragraph

Article in PloS one, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers.

0numbers the graph read from it
0cells of the map it votes in
76citing 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

76 citing papers in PubMed.

  1. Trial
  2. Safety and tolerability of the Easy Vax™ clinical epidermal electroporation system in healthy adults.Molecular therapy : the journal of the American Society of Gene Therapy · 2012
    Trial
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. In vitro and in vivo correlation of skin and cellular responses to nucleic acid delivery.Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2022
    Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Novel tumour antigens and the development of optimal vaccine design.Therapeutic advances in vaccines and immunotherapy · 2018
    Review
  18. Review
  19. Article
  20. Article

16 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

9 authors.

Anna-Karin RoosDepartment of Oncology and Pathology, Cancer Center Karolinska R8:01, Immune and Gene Therapy Laboratory, Karolinska Institute, Stockholm, Sweden. roos.anki@gmail.com
Fredrik Eriksson
James A Timmons
Josefine Gerhardt
Ulrika Nyman
Lindvi Gudmundsdotter
Andreas Bråve
Britta Wahren
Pavel Pisa

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundElectrical pulses have been used to enhance uptake of molecules into living cells for decades. This technique, often referred to as electroporation, has become an increasingly popular method to enhance in vivo DNA delivery for both gene therapy applications as well as for delivery of vaccines against both infectious diseases and cancer. In vivo electrovaccination (gene delivery followed by electroporation) is currently being investigated in several clinical trials, including DNA delivery to healthy volunteers. However, the mode of action at molecular level is not yet fully understood. METHODOLOGY/PRINCIPAL

findingsThis study investigates intradermal DNA electrovaccination in detail and describes the effects on expression of the vaccine antigen, plasmid persistence and the local tissue environment. Gene profiling of the vaccination site showed that the combination of DNA and electroporation induced a significant up-regulation of pro-inflammatory genes. In vivo imaging of luciferase activity after electrovaccination demonstrated a rapid onset (minutes) and a long duration (months) of transgene expression. However, when the more immunogenic prostate specific antigen (PSA) was co-administered, PSA-specific T cells were induced and concurrently the luciferase expression became undetectable. Electroporation did not affect the long-term persistence of the PSA-expressing plasmid. CONCLUSIONS/SIGNIFICANCE: This study provides important insights to how DNA delivery by intradermal electrovaccination affects the local immunological responses of the skin, transgene expression and clearance of the plasmid. As the described vaccination approach is currently being evaluated in clinical trials, the data provided will be of high significance.

Indexed as

TransgenesAnimalsDNAElectrophysiologyElectroporationFemaleGenetic TherapyGene Transfer TechniquesInjections, IntradermalKineticsMiceMice, Inbred BALB CMice, Inbred C57BLPlasmidsSkinDNA

Identifiers

PMID19789652
PMCPMC2748717

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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.