Evidence map›Paper›PMID 23632023›Full record

ArticleThe Journal of biological chemistry2013

Matrix metalloproteinase 8 (collagenase 2) induces the expression of interleukins 6 and 8 in breast cancer cells.

Sally Thirkettle, Julie Decock, Hugh Arnold, Caroline J Pennington, Diane M Jaworski, Dylan R Edwards

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 19% 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

36 citing papers in PubMed, 1 synthesis or guideline pooled it, 71 citations in OpenAlex.

  1. The Role of MMP8 in Cancer: A Systematic Review.International journal of molecular sciences · 2019
    Pooled it
  2. Review
  3. Asparagine endopeptidase prompts breast cancer-related pericardial calcification by regulating IGF2 and integrin αvβ5.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  11. Clinical risk factors and blood protein biomarkers of 10-year pneumonia risk.medRxiv : the preprint server for health sciences · 2023
    Article
  12. Article
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  15. MMP-9/BDNF ratio predicts more severe COVID-19 outcomes.International journal of medical sciences · 2022
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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

6 authors at 3 institutions in 2 countries.

Sally ThirkettleSchool of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, United Kingdom.
Julie DecockSchool of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, United Kingdom.
Hugh ArnoldSchool of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, United Kingdom.
Caroline J PenningtonSchool of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, United Kingdom.
Diane M JaworskiDepartment of Neurological Sciences, University of Vermont College of Medicine, Burlington, Vermont 05405.
Dylan R EdwardsSchool of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, United Kingdom. Electronic address: dylan.edwards@uea.ac.uk.
University of East Anglia · GBNorwich Research Park · GBUniversity of Vermont · US

Funding

Breast Cancer Now 2006MAYPR23Cancer Research UK
6 · The paper itself

Abstract

Matrix metalloproteinase 8 (MMP-8) is a tumor-suppressive protease that cleaves numerous substrates, including matrix proteins and chemokines. In particular, MMP-8 proteolytically activates IL-8 and, thereby, regulates neutrophil chemotaxis in vivo. We explored the effects of expression of either a WT or catalytically inactive (E198A) mutant version of MMP-8 in human breast cancer cell lines. Analysis of serum-free conditioned media from three breast cancer cell lines (MCF-7, SK-BR-3, and MDA-MB-231) expressing WT MMP-8 revealed elevated levels of IL-6 and IL-8. This increase was mirrored at the mRNA level and was dependent on MMP-8 catalytic activity. However, sustained expression of WT MMP-8 by breast cancer cells was non-permissive for long-term growth, as shown by reduced colony formation compared with cells expressing either control vector or E198A mutant MMP-8. In long-term culture of transfected MDA-MB-231 cells, expression of WT but not E198A mutant MMP-8 was lost, with IL-6 and IL-8 levels returning to base line. Rare clonal isolates of MDA-MB-231 cells expressing WT MMP-8 were generated, and these showed constitutively high levels of IL-6 and IL-8, although production of the interleukins was no longer dependent upon MMP-8 activity. These studies support a causal connection between MMP-8 activity and the IL-6/IL-8 network, with an acute response to MMP-8 involving induction of the proinflammatory mediators, which may in part serve to compensate for the deleterious effects of MMP-8 on breast cancer cell growth. This axis may be relevant to the recognized ability of MMP-8 to orchestrate the innate immune system in inflammation in vivo.

Indexed as

Gene Expression Regulation, EnzymologicGene Expression Regulation, NeoplasticBreast NeoplasmsCell Line, TumorFemaleHumansInflammation MediatorsInterleukin-6Interleukin-8Matrix Metalloproteinase 8Neoplasm ProteinsCXCL8 protein, humanIL6 protein, humanInflammation MediatorsInterleukin-6Interleukin-8Matrix Metalloproteinase 8MMP8 protein, humanNeoplasm ProteinsBreast CancerCancer BiologyChemokinesCytokineMatrix Metalloproteinase (MMP)Neutrophil Collagenase

Identifiers

PMID23632023
PMCPMC3675567
OpenAlexW2054517686

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.