Evidence map›Paper›PMID 31164151›Full record

ArticleJournal of experimental & clinical cancer research : CR2019

Metformin inhibits metastatic breast cancer progression and improves chemosensitivity by inducing vessel normalization via PDGF-B downregulation.

Ji-Chang Wang, Guang-Yue Li, Bo Wang, Su-Xia Han, Xin Sun, Yi-Na Jiang, Yan-Wei Shen, Can Zhou, Jun Feng, Shao-Ying Lu and 3 more

Open access · goldAbstract read
In one paragraph

Article in Journal of experimental & clinical cancer research : CR, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 90 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
90citing papers in PubMed, 3 pooled it
5.8field-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

90 citing papers in PubMed, 3 syntheses or guidelines pooled it, 139 citations in OpenAlex.

  1. Pooled it
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  4. Review
  5. p53 and p21 Status Influences Cellular Response to Metformin inCurrent issues in molecular biology · 2026
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  18. Hypoxia-driven angiogenesis and metabolic reprogramming in vascular tumors.Frontiers in cell and developmental biology · 2025
    Review
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  20. Article

30 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

13 authors at 1 institution in 1 country.

Ji-Chang WangDepartment of Vascular Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi Province, China.
Guang-Yue LiDepartment of Science and Technology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi Province, China.
Bo WangCenter for Translational Medicine, First Affiliated Hospital of Xi'an Jiaotong University, No. 277 of the Western Yanta Road, Xi'an, 710061, Shaanxi Province, China.
Su-Xia HanDepartment of Oncological Radiotherapy, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi Province, China.
Xin SunDepartment of Thoracic Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi Province, China.
Yi-Na JiangDepartment of Pathology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi Province, China.
Yan-Wei ShenDepartment of Breast Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi Province, China.
Can ZhouDepartment of Medical Oncology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi Province, China.
Jun FengDepartment of Vascular Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi Province, China.
Shao-Ying LuDepartment of Vascular Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi Province, China.
Jian-Lin LiuDepartment of Vascular Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi Province, China.
Mao-De WangDepartment of Neurosurgery, First Affiliated Hospital of Xi'an Jiaotong University, No. 277 of the Western Yanta Road, Xi'an, 710061, Shaanxi Province, China. maodewang@163.com.
Pei-Jun LiuCenter for Translational Medicine, First Affiliated Hospital of Xi'an Jiaotong University, No. 277 of the Western Yanta Road, Xi'an, 710061, Shaanxi Province, China. liupeijun@mail.xjtu.edu.cn.ORCID http://orcid.org/0000-0002-0767-0774
First Affiliated Hospital of Xi'an Jiaotong University · CN

Funding

Natural Science Foundation of Shaanxi Province No.2016JM8125Shaanxi Provincial Science and Technology Department No.2016SF196Shaanxi Provincial Science and Technology Department No.2017SF017Xi'an Jiaotong University No. xjj2016104Young Scientists Fund No.81602502Young Scientists Fund No.81602638
6 · The paper itself

Abstract

backgroundVascular maturity and functionality are closely associated with tumor progression and chemosensitivity. The antidiabetic agent metformin has shown its ability to inhibit tumor angiogenesis in metastatic breast cancer models. However, it remains unclear if or how metformin remodels the abnormal vasculature of metastatic breast cancer, while inhibiting angiogenesis.

methodsMetastatic breast cancer models were constructed to compare microvessel density (MVD), vascular maturity and function, lung metastasis and chemosensitivity in metformin-treated or untreated mice. Protein array assay and transcriptome sequencing were performed for genetic screening. Lentiviral shRNA-PDGF-B transfection was used for observing the contribution of PDGF-B knockdown to metformin's vascular effects.

resultsMetastatic breast cancers were characterized by an excessively angiogenic, immature and morphologically abnormal vasculature. Compared to control, metformin significantly reduced MVD, leakage and hypoxia, and increased vascular mural cells coverage and perfusion, namely, "vessel normalization". Metformin at human blood concentrations had no direct effect on the migration and proliferation of cancer cells. Based on that, reduced lung metastasis of the primary tumor and improved chemosensitization by metformin were assumed to be mediated via metformin's vascular effects. Further results of genetic screening and in vivo experiments showed that the downregulation of platelet-derived growth factor B (PDGF-B) greatly contributed to the metformin-induced vessel normalization.

conclusionsThese findings provide pre-clinical evidences for the vascular mechanism of metformin-induced metastasis inhibition and the chemosensitization of metastatic breast cancers.

Indexed as

AnimalsAntineoplastic AgentsBreast NeoplasmsCell Line, TumorCell MovementDisease Models, AnimalDisease ProgressionDrug Resistance, NeoplasmFemaleGene Expression ProfilingGene Expression Regulation, NeoplasticHumansMetforminMiceModels, BiologicalNeoplasm StagingAntineoplastic AgentsMetforminProto-Oncogene Proteins c-sisChemosensitizationMetastatic breast cancerMetforminPDGF-BVessel normalization

Identifiers

PMID31164151
PMCPMC6549289
OpenAlexW2948510422

What OpenQuestion holds

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LicenceCC BY
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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.