Evidence map›Paper›PMID 20492653›Full record

ArticleBMC cancer2010

Hypoxia increases the metastatic ability of breast cancer cells via upregulation of CXCR4.

Patricia A Cronin, Jiang H Wang, H Paul Redmond

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 1 pooled it
4.4field-weighted citation impact, top 5% 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

46 citing papers in PubMed, 1 synthesis or guideline pooled it, 91 citations in OpenAlex.

  1. Pooled it
  2. Article
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  4. Review
  5. Review
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  7. Article
  8. Randomly Distributed K14Cancer research · 2019
    Article
  9. Article
  10. GPCR Modulation in Breast Cancer.International journal of molecular sciences · 2018
    Review
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Inhibitors of HIF-1α and CXCR4 Mitigate the Development of Radiation Necrosis in Mouse Brain.International journal of radiation oncology, biology, physics · 2018
    Article
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  19. Article
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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

3 authors at 2 institutions in 1 country.

Patricia A CroninDepartment of Academic Surgery, University College Cork, Cork University Hospital, Cork, Ireland.
Jiang H Wang
H Paul Redmond
Cork University Hospital · IEUniversity College Cork · IE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChemokine SDF1alpha and its unique receptor CXCR4 have been implicated in organ-specific metastases of many cancers including breast cancer. Hypoxia is a common feature of solid tumors and is associated with their malignant phenotype. We hypothesized that hypoxia would upregulate CXCR4 expression and lead to increased chemotactic responsiveness to its specific ligand SDF1alpha.

methodsThree breast cancer cell lines MDA-MB-231, MCF7 and 4T1 were subjected to 48 hrs of hypoxia or normoxia. Cell surface receptor expression was evaluated using flow cytometry. An extracellular matrix invasion assay and microporous migration assay was used to assess chemotactic response and metastatic ability.

resultsCXCR4 surface expression was significantly increased in the two human breast cancer cell lines, MDA-MB-231 and MCF7, following exposure to hypoxia. This upregulation of CXCR4 cell surface expression corresponded to a significant increase in migration and invasion in response to SDF1-alpha in vitro. The increase in metastatic potential of both the normoxic and the hypoxic treated breast cancer cell lines was attenuated by neutralization of CXCR4 with a CXCR4 neutralizing mAb, MAB172 or a CXCR4 antagonist, AMD3100, showing the relationship between CXCR4 overexpression and increased chemotactic responsiveness.

conclusionsCXCR4 expression can be modulated by the tissue microenvironment such as hypoxia. Upregulation of CXCR4 is associated with increased migratory and invasive potential and this effect can be abrogated by CXCR4 inhibition. Chemokine receptor CXCR4 is a potential therapeutic target in the adjuvant treatment of breast cancer.

Indexed as

ChemotaxisAnimalsAntibodies, MonoclonalBenzylaminesBreast NeoplasmsCell HypoxiaCell Line, TumorCell MembraneChemokine CXCL12CyclamsFemaleFlow CytometryHeterocyclic CompoundsHumansMiceNeoplasm InvasivenessAntibodies, MonoclonalBenzylaminesChemokine CXCL12CXCL12 protein, humanCxcl12 protein, mouseCXCR4 protein, humanCyclamsHeterocyclic CompoundsplerixaforReceptors, CXCR4Recombinant Proteins

Identifiers

PMID20492653
PMCPMC2880996
OpenAlexW2150482005

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.