Evidence map›Paper›PMID 24460787›Full record

ArticleJournal of experimental & clinical cancer research : CR2014

Suppression of NAD(P)H-quinone oxidoreductase 1 enhanced the susceptibility of cholangiocarcinoma cells to chemotherapeutic agents.

Ponsilp Zeekpudsa, Veerapol Kukongviriyapan, Laddawan Senggunprai, Banchob Sripa, Auemduan Prawan

Open access · goldAbstract read
In one paragraph

Article in Journal of experimental & clinical cancer research : CR, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

33 citing papers in PubMed, 52 citations in OpenAlex.

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  17. Zeta-crystallin: a moonlighting player in cancer.Cellular and molecular life sciences : CMLS · 2020
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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

5 authors at 1 institution in 1 country.

Ponsilp Zeekpudsa
Veerapol Kukongviriyapan
Laddawan Senggunprai
Banchob Sripa
Auemduan PrawanDepartment of Pharmacology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand. peuamd@kku.ac.th.
Khon Kaen University · TH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCholangiocarcinoma (CCA) is highly resistant to most of the known chemotherapeutic treatments. NAD(P)H-quinone oxidoreductase 1 (NQO1) is an antioxidant/detoxifying enzyme recently recognized as an important contributor to chemoresistance in some human cancers. However, the contribution of NQO1 to chemotherapy resistance in CCA is unknown.

methodsTwo CCA cell lines, KKU-100 and KKU-M214, with high and low NQO1 expression levels, respectively, were used to evaluate the sensitivity to chemotherapeutic agents; 5-fluorouracil (5-FU), doxorubicin (Doxo), and gemcitabine (Gem). NQO1 and/or p53 expression in KKU-100 cells were knocked down by siRNA. NQO1 was over-expressed in KKU-M214 cells by transfection with pCMV6-XL5-NQO1 expression vector. CCA cells with modulated NQO1 and/or p53 expression were treated with chemotherapeutic agents, and the cytotoxicity was assessed by SRB assay. The mechanism of enhanced chemosensitivity was evaluated by Western blot analysis.

resultsWhen NQO1 was knocked down, KKU-100 cells became more susceptible to all chemotherapeutic agents. Conversely, with over-expression of NQO1 made KKU-M214 cells more resistant to chemotherapeutic agents. Western blot analysis suggested that enhanced chemosensitivity was probably due to the activation of p53-mediated cell death. Enhanced susceptibility to chemotherapeutic agents by NQO1 silencing was abolished by knockdown of p53.

conclusionsThese results suggest that inhibition of NQO1 could enhance the susceptibility of CCA to an array of chemotherapeutic agents.

Indexed as

Drug Resistance, NeoplasmAntineoplastic AgentsApoptosis Regulatory ProteinsBile Duct NeoplasmsCell Line, TumorCell ProliferationCell SurvivalCholangiocarcinomaDeoxycytidineDoxorubicinFluorouracilGemcitabineGene ExpressionGene Knockdown TechniquesHumansNAD(P)H Dehydrogenase (Quinone)Antineoplastic AgentsApoptosis Regulatory ProteinsDeoxycytidineDoxorubicinFluorouracilGemcitabineNAD(P)H Dehydrogenase (Quinone)NQO1 protein, humanRNA, Small InterferingTP53 protein, humanTumor Suppressor Protein p53

Identifiers

PMID24460787
PMCPMC3922744
OpenAlexW2150687185

What OpenQuestion holds

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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.