Evidence map›Paper›PMID 18402662›Full record

ArticleBMC cancer2008

Prodrug converting enzyme gene delivery by L. monocytogenes.

Jochen Stritzker, Sabine Pilgrim, Aladar A Szalay, Werner Goebel

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
4.7field-weighted citation impact, top 6% 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

19 citing papers in PubMed, 42 citations in OpenAlex.

  1. Article
  2. Bacterial-Mediated Tumor Therapy: Old Treatment in a New Context.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2023
    Review
  3. Article
  4. Review
  5. White paper on microbial anti-cancer therapy and prevention.Journal for immunotherapy of cancer · 2018
    Review
  6. Bacteria in Cancer Therapy: Renaissance of an Old Concept.International journal of microbiology · 2016
    Review
  7. Review
  8. Article
  9. Review
  10. Single-agent combinatorial cancer therapy.Proceedings of the National Academy of Sciences of the United States of America · 2013
    Article
  11. Article
  12. Proliferation behavior of E. coli in a three-dimensional in vitro tumor model.Integrative biology : quantitative biosciences from nano to macro · 2011
    Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Biological gene delivery vehicles: beyond viral vectors.Molecular therapy : the journal of the American Society of Gene Therapy · 2009
    Review
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

4 authors at 2 institutions in 2 countries.

Jochen StritzkerBiocenter (Microbiology), University of Würzburg, Am Hubland, D-97074 Würzburg, Germany. jochen.stritzker@biozentrum.uni-wuerzburg.de
Sabine Pilgrim
Aladar A Szalay
Werner Goebel
University of Würzburg · DEFleet Science Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundListeria monocytogenes is a highly versatile bacterial carrier system for introducing protein, DNA and RNA into mammalian cells. The delivery of tumor antigens with the help of this carrier into tumor-bearing animals has been successfully carried out previously and it was recently reported that L. monocytogenes is able to colonize and replicate within solid tumors after local or even systemic injection.

methodsHere we report on the delivery of two prodrug converting enzymes, purine-deoxynucleoside phosphorylase (PNP) and a fusion protein consisting of yeast cytosine deaminase and uracil phosphoribosyl transferase (FCU1) into cancer cells in culture by L. monocytogenes. Transfer of the prodrug converting enzymes was achieved by bacterium mediated transfer of eukaryotic expression plasmids or by secretion of the proteins directly into the host cell cytosol by the infecting bacteria.

resultsThe results indicate that conversion of appropriate prodrugs to toxic drugs in the cancer cells occured after both procedures although L. monocytogenes-mediated bactofection proved to be more efficient than enzyme secretion 4T1, B16 and COS-1 tumor cells. Exchanging the constitutively PCMV-promoter with the melanoma specific P4xTETP-promoter resulted in melanoma cell-specific expression of the prodrug converting enzymes but reduced the efficiencies.

conclusionThese experiments open the way for bacterium mediated tumor specific activation of prodrugs in live animals with tumors.

Indexed as

Genetic TherapyAnimalsCytosine DeaminaseDrug Delivery SystemsEnzymesGenetic VectorsListeria monocytogenesNeoplasmsPentosyltransferasesPlasmidsProdrugsPurine-Nucleoside PhosphorylaseRecombinant Fusion ProteinsTumor Cells, CulturedCytosine DeaminaseEnzymesPentosyltransferasesProdrugsPurine-Nucleoside PhosphorylaseRecombinant Fusion Proteinsuracil phosphoribosyltransferase

Identifiers

PMID18402662
PMCPMC2329648
OpenAlexW2126594791

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.