Evidence map›Paper›PMID 25372840›Full record

ArticlePloS one2014

The reversal effects of 3-bromopyruvate on multidrug resistance in vitro and in vivo derived from human breast MCF-7/ADR cells.

Long Wu, Jun Xu, Weiqi Yuan, Baojian Wu, Hao Wang, Guangquan Liu, Xiaoxiong Wang, Jun Du, Shaohui Cai

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.4field-weighted citation impact, top 10% 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

18 citing papers in PubMed, 34 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

9 authors at 2 institutions in 1 country.

Long WuDepartment of Clinical Pharmacology, College of Pharmacy, Jinan University, Guangzhou 510632, P. R. China.
Jun XuDepartment of Clinical Pharmacology, College of Pharmacy, Jinan University, Guangzhou 510632, P. R. China.
Weiqi YuanDepartment of Clinical Pharmacology, College of Pharmacy, Jinan University, Guangzhou 510632, P. R. China.
Baojian WuDivision of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou 510632, P. R. China.
Hao WangSchool of Pharmaceutical Sciences, Sun Yat-sen University, Guang Zhou 510275, P. R. China.
Guangquan LiuDepartment of Clinical Pharmacology, College of Pharmacy, Jinan University, Guangzhou 510632, P. R. China.
Xiaoxiong WangDepartment of Clinical Pharmacology, College of Pharmacy, Jinan University, Guangzhou 510632, P. R. China.
Jun DuSchool of Pharmaceutical Sciences, Sun Yat-sen University, Guang Zhou 510275, P. R. China.
Shaohui CaiDepartment of Clinical Pharmacology, College of Pharmacy, Jinan University, Guangzhou 510632, P. R. China.
Jinan University · CNSun Yat-sen University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeP-glycoprotein mediated efflux is one of the main mechanisms for multidrug resistance in cancers, and 3-Bromopyruvate acts as a promising multidrug resistance reversal compound in our study. To test the ability of 3-Bromopyruvate to overcome P-glycoprotein-mediated multidrug resistance and to explore its mechanisms of multidrug resistance reversal in MCF-7/ADR cells, we evaluate the in vitro and in vivo modulatory activity of this compound.

methodsThe in vitro and in vivo activity was determined using the MTT assay and human breast cancer xenograft models. The gene and protein expression of P-glycoprotein were determined using real-time polymerase chain reaction and the Western blotting technique, respectively. ABCB-1 bioactivity was tested by fluorescence microscopy, multi-mode microplate reader, and flow cytometry. The intracellular levels of ATP, HK-II, and ATPase activity were based on an assay kit according to the manufacturer's instructions.

results3-Bromopyruvate treatment led to marked decreases in the IC50 values of selected chemotherapeutic drugs [e.g., doxorubicin (283 folds), paclitaxel (85 folds), daunorubicin (201 folds), and epirubicin (171 folds)] in MCF-7/ADR cells. 3-Bromopyruvate was found also to potentiate significantly the antitumor activity of epirubicin against MCF-7/ADR xenografts. The intracellular level of ATP decreased 44%, 46% in the presence of 12.5.25 µM 3-Bromopyruvate, whereas the accumulation of rhodamine 123 and epirubicin (two typical P-glycoprotein substrates) in cells was significantly increased. Furthermore, we found that the mRNA and the total protein level of P-glycoprotein were slightly altered by 3-Bromopyruvate. Moreover, the ATPase activity was significantly inhibited when 3-Bromopyruvate was applied.

conclusionWe demonstrated that 3-Bromopyruvate can reverse P-glycoprotein-mediated efflux in MCF-7/ADR cells. Multidrug resistance reversal by 3-Bromopyruvate occurred through at least three approaches, namely, a decrease in the intracellular level of ATP and HK-II bioactivity, the inhibition of ATPase activity, and the slight decrease in P-glycoprotein expression in MCF-7/ADR cells.

Indexed as

AnimalsAntineoplastic AgentsATP Binding Cassette Transporter, Subfamily BBreast NeoplasmsCell Line, TumorDrug Resistance, MultipleDrug Resistance, NeoplasmEnzyme InhibitorsFemaleHumansMiceMice, Inbred BALB CMice, NudeNeoplasm ProteinsPyruvatesXenograft Model Antitumor AssaysABCB1 protein, humanAntineoplastic AgentsATP Binding Cassette Transporter, Subfamily BbromopyruvateEnzyme InhibitorsNeoplasm ProteinsPyruvates

Identifiers

PMID25372840
PMCPMC4221289
OpenAlexW1995991943

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.