Evidence map›Paper›PMID 21975465›Full record

ArticleGene therapy2012

Novel Clostridium perfringens enterotoxin suicide gene therapy for selective treatment of claudin-3- and -4-overexpressing tumors.

W Walther, S Petkov, O N Kuvardina, J Aumann, D Kobelt, I Fichtner, M Lemm, J Piontek, I E Blasig, U Stein and 1 more

Open access · bronzeAbstract readEvaluation Study
PubMed Publisher
In one paragraph

Article in Gene therapy, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
4.5field-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

34 citing papers in PubMed, 66 citations in OpenAlex.

  1. Review
  2. Claudin and pancreatic cancer.Frontiers in oncology · 2023
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  8. A Brief Introduction to Current Cancer Gene Therapy.Methods in molecular biology (Clifton, N.J.) · 2022
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  11. Review
  12. Microbiome in human cancers.Access microbiology · 2021
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  13. Article
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  15. Use of ModifiedInternational journal of molecular sciences · 2019
    Article
  16. Article
  17. Article
  18. Multiple protocadherins are expressed in brain microvascular endothelial cells and might play a role in tight junction protein regulation.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2017
    Article
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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

11 authors at 3 institutions in 1 country.

W WaltherExperimental and Clinical Research Center, Charité University Medicine Berlin, Berlin, Germany. wowalt@mdc-berlin.de
S Petkov
O N Kuvardina
J Aumann
D Kobelt
I Fichtner
M Lemm
J Piontek
I E Blasig
U Stein
P M Schlag
Max Delbrück Center · DECharité - Universitätsmedizin Berlin · DELeibniz-Forschungsinstitut für Molekulare Pharmakologie · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Bacterial toxins are known to be effective for cancer therapy. Clostridium perfringens enterotoxin (CPE) is produced by the bacterial Clostridium type A strain. The transmembrane proteins claudin-3 and -4, often overexpressed in numerous human epithelial tumors (for example, colon, breast, pancreas, prostate and ovarian), are the targeted receptors for CPE. CPE binding to them triggers formation of membrane pore complexes leading to rapid cell death. In this study, we aimed at selective tumor cell killing by CPE gene transfer. We generated expression vectors bearing the bacterial wild-type CPE cDNA (wtCPE) or translation-optimized CPE (optCPE) cDNA for in vitro and in vivo gene therapy of claudin-3- and -4-overexpressing tumors. The CPE expression analysis at messenger RNA and protein level revealed more efficient expression of optCPE compared with wtCPE. Expression of optCPE showed rapid cytotoxic activity, hightened by CPE release as bystander effect. Cytotoxicity of up to 100% was observed 72 h after gene transfer and is restricted to claudin-3-and -4-expressing tumor lines. MCF-7 and HCT116 cells with high claudin-4 expression showed dramatic sensitivity toward CPE toxicity. The claudin-negative melanoma line SKMel-5, however, was insensitive toward CPE gene transfer. The non-viral intratumoral in vivo gene transfer of optCPE led to reduced tumor growth in MCF-7 and HCT116 tumor-bearing mice compared with the vector-transfected control groups. This novel approach demonstrates that CPE gene transfer can be employed for a targeted suicide gene therapy of claudin-3- and -4-overexpressing tumors, leading to the rapid and efficient tumor cell killing in vitro and in vivo.

Indexed as

Genes, Transgenic, SuicideAnimalsBystander EffectCell Line, TumorClaudin-3Claudin-4ClaudinsEnterotoxinsGenetic TherapyHCT116 CellsHumansMaleMiceNeoplasmsXenograft Model Antitumor AssaysClaudin-3Claudin-4ClaudinsCLDN3 protein, humanCldn3 protein, mouseCLDN4 protein, humanCldn4 protein, mouseenterotoxin, ClostridiumEnterotoxins

Identifiers

PMID21975465
OpenAlexW2079801231

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.