Evidence map›Paper›PMID 19517064›Full record

ArticleJournal of neuro-oncology2009

Intracranial elimination of human glioblastoma brain tumors in nude rats using the bispecific ligand-directed toxin, DTEGF13 and convection enhanced delivery.

Seunguk Oh, John R Ohlfest, Deborah A Todhunter, Vincent D Vallera, Walter A Hall, Hua Chen, Daniel A Vallera

Abstract read
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In one paragraph

Article in Journal of neuro-oncology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.4field-weighted citation impact, top 20% 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

17 citing papers in PubMed, 29 citations in OpenAlex.

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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

7 authors at 3 institutions in 1 country.

Seunguk OhSection on Molecular Cancer Therapeutics, Department of Therapeutic Radiology-Radiation Oncology, University of Minnesota Masonic Cancer Center, MMC: 367, Minneapolis, MN, 55455, USA.
John R OhlfestDepartment of Pediatrics, University of Minnesota, Minneapolis, MN, USA.
Deborah A TodhunterSection on Molecular Cancer Therapeutics, Department of Therapeutic Radiology-Radiation Oncology, University of Minnesota Masonic Cancer Center, MMC: 367, Minneapolis, MN, 55455, USA.
Vincent D ValleraSection on Molecular Cancer Therapeutics, Department of Therapeutic Radiology-Radiation Oncology, University of Minnesota Masonic Cancer Center, MMC: 367, Minneapolis, MN, 55455, USA.
Walter A HallDepartment of Neurosurgery, SUNY Upstate Medical University, Syracuse, NY, USA.
Hua ChenSection on Molecular Cancer Therapeutics, Department of Therapeutic Radiology-Radiation Oncology, University of Minnesota Masonic Cancer Center, MMC: 367, Minneapolis, MN, 55455, USA.
Daniel A ValleraSection on Molecular Cancer Therapeutics, Department of Therapeutic Radiology-Radiation Oncology, University of Minnesota Masonic Cancer Center, MMC: 367, Minneapolis, MN, 55455, USA. valle001@umn.edu.
University of Minnesota · USSUNY Upstate Medical University · USUniversity of Minnesota Medical Center · US

Funding

Experimental Therapeutics for Brain CancerR01CA108637 · NCI · UNIVERSITY OF MINNESOTA TWIN CITIES · PI VALLERA, DANIEL A · 2005 to 2009
$1.1M
Concurrent Immune Stimulation and Inhibition of Angiogenesis for Glioma TherapyR21NS055738 · NINDS · UNIVERSITY OF MINNESOTA · PI OHLFEST, JOHN R · 2007 to 2008
$360k
NCI NIH HHS R01-CA108637NINDS NIH HHS R21-NS055738
6 · The paper itself

Abstract

A bispecific ligand-directed toxin (BLT) consisting of human interleukin-13, epithelial growth factor, and the first 389 amino acids of diphtheria toxin was assembled in order to target human glioblastoma. In vitro, DTEGF13 selectively killed the human glioblastoma cell line U87-luc as well as other human glioblastomas. DTEGF13 fulfilled the requirement of a successful BLT by having greater activity than either of its monospecific counterparts or their mixture proving it necessary to have both ligands on the same single chain molecule. Aggressive brain tumors established intracranially (IC) in nude rats with U87 glioma genetically marked with a firefly luciferase reporter gene were treated with two injections of DTEGF13 using convection enhanced delivery resulting in tumor eradication in 50% of the rats which survived with tumor free status at least 110 days post tumor inoculation. An irrelevant BLT control did not protect establishing specificity. The bispecific DTEGF13 MTD dose was measured at 2 microg/injection or 0.5 microg/kg and toxicity studies indicated safety in this dose. Combination of monospecific DTEGF and DTIL13 did not inhibit tumor growth. ELISA assay indicated that anti-DT antibodies were not generated in normal immunocompetent rats given identical intracranial DTEGF13 therapy. Thus, DTEGF13 is safe and efficacious as an alternative drug for glioblastoma therapy and warrants further study.

Indexed as

AnimalsAntibody SpecificityBrain NeoplasmsCell DivisionCell Line, TumorDrug Delivery SystemsEnzyme-Linked Immunosorbent AssayGenes, ReporterGlioblastomaHumansImmunoglobulin GLigandsLiverLuciferasesNeoplasm TransplantationRatsDTEGF13 cytotoxinImmunoglobulin GLigandsLuciferasesRecombinant Fusion Proteins

Identifiers

PMID19517064
OpenAlexW1997390675

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.