Evidence map›Paper›PMID 26894974›Full record

ArticleOncotarget2016

Nrf2 is the key to chemotherapy resistance in MCF7 breast cancer cells under hypoxia.

Jhih-Pu Syu, Jen-Tsan Chi, Hsiu-Ni Kung

Open access · diamondAbstract read
In one paragraph

Article in Oncotarget, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed
5.9field-weighted citation impact, top 3% 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

64 citing papers in PubMed, 132 citations in OpenAlex.

  1. Significance of GSH and HRedox report : communications in free radical research · 2026
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  13. Revisiting reactive oxygen species production in hypoxia.Pflugers Archiv : European journal of physiology · 2024
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4 more citing papers are in PubMed but not listed here.

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

3 authors at 2 institutions in 2 countries.

Jhih-Pu SyuDepartment of Anatomy and Cell Biology, College of Medicine, National Taiwan University, Taipei, Taiwan.
Jen-Tsan ChiCenter for Genomic and Computational Biology, Duke University, Durham, NC, USA.
Hsiu-Ni KungDepartment of Anatomy and Cell Biology, College of Medicine, National Taiwan University, Taipei, Taiwan.
National Taiwan University · TWDuke University · US

Funding

Gene expression programs of lactic acidosis in human cancersR01CA125618 · NCI · DUKE UNIVERSITY · PI CHI, JEN-TSAN ASHLEY · 2007 to 2016
$3.3M
Oncogenic Gene Regulatory NetworksR01CA106520 · NCI · DUKE UNIVERSITY · PI CHI, JEN-TSAN ASHLEY · 2005 to 2014
$2.9M
NCI NIH HHS R01 CA106520NCI NIH HHS R01 CA125618
6 · The paper itself

Abstract

Hypoxia leads to reactive oxygen species (ROS) imbalance, which is proposed to associate with drug resistance and oncogenesis. Inhibition of enzymes of antioxidant balancing system in tumor cells was shown to reduce chemoresistance under hypoxia. However, the underlying mechanism remains unknown. The key regulator of antioxidant balancing system is nuclear factor erythroid 2-related factor 2 (NFE2L2, Nrf2). In this study, we showed that hypoxia induced ROS production and increased the Nrf2 activity. Nrf2 activation increased levels of its downstream target antioxidant enzymes, including GCLC and GCLM. The Nrf2-overexpressing also confers chemo-resistant MCF7 cells under normoxia. The in vivo mouse model also demonstrated that the chemical inhibition of Nrf2 can increase cisplatin (CDDP) cytotoxicity. Together, these results showed that Nrf2 serves as a key regulator in chemotherapeutic resistance under hypoxia through ROS-Nrf2-GCLC-GSH pathway. Therefore, targeting Nrf2 can be a potential treatment for hypoxia-induced drug resistance in breast cancer cells.

Indexed as

Drug Resistance, NeoplasmGene Expression Regulation, NeoplasticAnimalsAntineoplastic AgentsApoptosisBiomarkers, TumorBreast NeoplasmsCell ProliferationCisplatinFemaleGlutamate-Cysteine LigaseHumansHypoxiaMiceMice, Inbred ICRNF-E2-Related Factor 2Antineoplastic AgentsBiomarkers, TumorCisplatinGCLC protein, humanGCLM protein, humanGlutamate-Cysteine LigaseNFE2L2 protein, humanNF-E2-Related Factor 2antioxidant activitybreast tumordrug resistancehypoxiaNrf2

Identifiers

PMID26894974
PMCPMC4924742
OpenAlexW2276797747

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.