Evidence map›Paper›PMID 26041409›Full record

ArticleCancer science2015

Src/STAT3-dependent heme oxygenase-1 induction mediates chemoresistance of breast cancer cells to doxorubicin by promoting autophagy.

Qixing Tan, Hongli Wang, Yongliang Hu, Meiru Hu, Xiaoguang Li, Aodengqimuge, Yuanfang Ma, Changyuan Wei, Lun Song

Open access · goldAbstract read
In one paragraph

Article in Cancer science, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 78 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed, 1 pooled it
5.6field-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

78 citing papers in PubMed, 1 synthesis or guideline pooled it, 118 citations in OpenAlex.

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18 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

9 authors at 5 institutions in 1 country.

Qixing TanDepartment of Stress Medicine, Beijing Institute of Basic Medical Sciences, Beijing, China.
Hongli WangDepartment of Stress Medicine, Beijing Institute of Basic Medical Sciences, Beijing, China.
Yongliang HuDepartment of Stress Medicine, Beijing Institute of Basic Medical Sciences, Beijing, China.
Meiru HuDepartment of Stress Medicine, Beijing Institute of Basic Medical Sciences, Beijing, China.
Xiaoguang LiDepartment of Stress Medicine, Beijing Institute of Basic Medical Sciences, Beijing, China.
AodengqimugeDepartment of Stress Medicine, Beijing Institute of Basic Medical Sciences, Beijing, China.
Yuanfang MaLaboratory of Cellular and Molecular Immunology, School of Medicine, Henan University, Kaifeng, China.
Changyuan WeiDepartment of Breast Surgery, Guangxi Medical University Tumor Hospital, Nanning, China.
Lun SongDepartment of Stress Medicine, Beijing Institute of Basic Medical Sciences, Beijing, China.
Institute of Basic Medical Sciences of the Chinese Academy of Medical SciencesChina Pharmaceutical University · CNHenan University · CNBeijing Institute of Education · CNTumor Hospital of Guangxi Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chemotherapeutic resistance in breast cancer, whether acquired or intrinsic, remains a major clinical obstacle. Thus, increasing tumor cell sensitivity to chemotherapeutic agents will be helpful in improving the clinical management of breast cancer. In the present study, we found an induction of HO-1 expression in doxorubicin (DOX)-treated MDA-MB-231 human breast adenocarcinoma cells, which showed insensitivity to DOX treatment. Knockdown HO-1 expression dramatically upregulated the incidence of MDA-MB-231 cell death under DOX treatment, indicating that HO-1 functions as a critical contributor to drug resistance in MDA-MB-231 cells. We further observed that DOX exposure induced a cytoprotective autophagic flux in MDA-MB-231 cells, which was dependent on HO-1 induction. Moreover, upregulation of HO-1 expression required the activation of both signal transducer and activator of transcription (STAT)3 and its upstream regulator, protein kinase Src. Abrogating Src/STAT3 pathway activation attenuated HO-1 and autophagy induction, thus increasing the chemosensitivity of MDA-MB-231 cells. Therefore, we conclude that Src/STAT3-dependent HO-1 induction protects MDA-MB-231 breast cancer cells from DOX-induced death through promoting autophagy. In the following study, we further demonstrated the contribution of Src/STAT3/HO-1/autophagy pathway activation to DOX resistance in another breast cancer cell line, MDA-MB-468, which bears a similar phenotype to MDA-MB-231 cells. Therefore, activation of Src/STAT3/HO-1/autophagy signaling pathway might play a general role in protecting certain subtypes of breast cancer cells from DOX-induced cytotoxicity. Targeting this signaling event may provide a potential approach for overcoming DOX resistance in breast cancer therapeutics.

Indexed as

Antineoplastic AgentsAutophagyBlotting, WesternBreast NeoplasmsCell Line, TumorDoxorubicinDrug Resistance, NeoplasmFemaleHeme Oxygenase-1HumansSignal Transductionsrc-Family KinasesSTAT3 Transcription FactorTransfectionAntineoplastic AgentsDoxorubicinHeme Oxygenase-1HMOX1 protein, humansrc-Family KinasesSTAT3 protein, humanSTAT3 Transcription FactorAutophagychemoresistanceheme oxygenase‐1SrcSTAT3

Identifiers

PMID26041409
PMCPMC4556392
OpenAlexW1561253878

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.