Evidence map›Paper›PMID 18302761›Full record

ArticleJournal of translational medicine2008

NCX-4040, a nitric oxide-releasing aspirin, sensitizes drug-resistant human ovarian xenograft tumors to cisplatin by depletion of cellular thiols.

Anna Bratasz, Karuppaiyah Selvendiran, Tomasz Wasowicz, Andrey Bobko, Valery V Khramtsov, Louis J Ignarro, Periannan Kuppusamy

Open access · goldAbstract readComparative Study
In one paragraph

Article in Journal of translational medicine, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
5.2field-weighted citation impact, top 5% 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

20 citing papers in PubMed, 57 citations in OpenAlex.

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  17. Nitroxides as cancer imaging agents.Anti-cancer agents in medicinal chemistry · 2011
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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 2 institutions in 1 country.

Anna BrataszCenter for Biomedical EPR Spectroscopy and Imaging, Davis Heart and Lung Research Institute, Department of Internal Medicine, The Ohio State University, Columbus, OH 43210, USA. kuppusamy.1@osu.edu
Karuppaiyah Selvendiran
Tomasz Wasowicz
Andrey Bobko
Valery V Khramtsov
Louis J Ignarro
Periannan Kuppusamy
The Ohio State University · USOklahoma State University Center for Health Sciences · US

Funding

In Vivo EPR Imaging of Redox Status and Thiols in TumorR01CA102264 · NCI · OHIO STATE UNIVERSITY · PI KUPPUSAMY, PERIANNAN · 2004 to 2007
$1.2M
In vivo imaging and spectroscopy of pH and thiols statusK01EB003519 · NIBIB · OHIO STATE UNIVERSITY · PI KHRAMTSOV, VALERY V · 2004 to 2008
$783k
NCI NIH HHS CA102264NCI NIH HHS R01 CA102264NIBIB NIH HHS K01 EB003519NIBIB NIH HHS K01 EB03519
6 · The paper itself

Abstract

backgroundOvarian carcinoma is the leading cause of mortality among gynecological cancers in the world. The high mortality rate is associated with lack of early diagnosis and development of drug resistance. The antitumor efficacy and mechanism of NCX-4040, a nitric oxide-releasing aspirin derivative, against ovarian cancer is studied.

methodsNCX-4040, alone or in combination with cisplatin (cis-diamminedichloroplatinum, cDDP), was studied in cisplatin-sensitive (A2780 WT) and cisplatin-resistant (A2780 cDDP) cell lines as well as xenograft tumors grown in nude mice. Electron paramagnetic resonance (EPR) was used for measurements of nitric oxide and redox state. Immunoblotting analysis of A2780 cDDP tumor xenografts from mice was used for mechanistic studies.

resultsCells treated with NCX-4040 (25 microM) showed a significant reduction of cell viability (A2780 WT, 34.9 +/- 8.7%; A2780 cDDP, 41.7 +/- 7.6%; p < 0.05). Further, NCX-4040 significantly enhanced the sensitivity of A2780 cDDP cells (cisplatin alone, 80.6 +/- 11.8% versus NCX-4040+cisplatin, 26.4 +/- 7.6%; p < 0.01) and xenograft tumors (cisplatin alone, 74.0 +/- 4.4% versus NCX-4040+cisplatin, 56.4 +/- 7.8%; p < 0.05), to cisplatin treatment. EPR imaging of tissue redox and thiol measurements showed a 5.5-fold reduction (p < 0.01) of glutathione in NCX-4040-treated A2780 cDDP tumors when compared to untreated controls. Immunoblotting analysis of A2780 cDDP tumor xenografts from mice treated with NCX-4040 and cisplatin revealed significant downregulation of pEGFR (Tyr845 and Tyr992) and pSTAT3 (Tyr705 and Ser727) expression.

conclusionThe results suggested that NCX-4040 could resensitize drug-resistant ovarian cancer cells to cisplatin possibly by depletion of cellular thiols. Thus NCX-4040 appears to be a potential therapeutic agent for the treatment of human ovarian carcinoma and cisplatin-resistant malignancies.

Indexed as

AnimalsAntineoplastic AgentsAspirinCell Line, TumorCell SurvivalCisplatinDose-Response Relationship, DrugDrug Resistance, NeoplasmDrug SynergismFemaleHumansMiceMice, NudeMolecular StructureNitro CompoundsOvarian NeoplasmsAntineoplastic AgentsAspirinCisplatinNCX 4040nitroaspirinNitro CompoundsSulfhydryl Compounds

Identifiers

PMID18302761
PMCPMC2267444
OpenAlexW2088312168

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.