Evidence map›Paper›PMID 19617536›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2009

Gliomas induce and exploit microglial MT1-MMP expression for tumor expansion.

D S Markovic, K Vinnakota, S Chirasani, M Synowitz, H Raguet, K Stock, M Sliwa, S Lehmann, R Kälin, N van Rooijen and 8 more

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 234 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
234citing papers in PubMed, 2 pooled it
12.4field-weighted citation impact, top 1% 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

234 citing papers in PubMed, 2 syntheses or guidelines pooled it, 385 citations in OpenAlex.

  1. Pooled it
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  16. A zinc transporter drives glioblastoma progression via extracellular vesicles-reprogrammed microglial plasticity.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  17. Review
  18. Article
  19. Breaking Down Glioma-Microenvironment Crosstalk.The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry · 2025
    Review
  20. Article

174 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

18 authors at 5 institutions in 3 countries.

D S MarkovicCellular Neuroscience, Max Delbrück Center for Molecular Medicine, 13125 Berlin, Germany.
K Vinnakota
S Chirasani
M Synowitz
H Raguet
K Stock
M Sliwa
S Lehmann
R Kälin
N van Rooijen
K Holmbeck
F L Heppner
J Kiwit
V Matyash
S Lehnardt
B Kaminska
R Glass
H Kettenmann
Max Delbrück Center · DECharité - Universitätsmedizin Berlin · DEInstytut Biologii Doświadczalnej im. Marcelego Nenckiego · PLHelios Hospital Berlin-Buch · DENational Institutes of Health · US

Funding

Matrix Metalloproteinases: Remodeling of the Extracellular MatrixZIADE000676 · NIDCR · NATIONAL INSTITUTE OF DENTAL & CRANIOFACIAL RESEARCH · PI ROBEY, PAMELA G · 2009 to 2017
$9.7M
Matrix Metalloproteinases: Remodelling of the ExtracelluZ01DE000676 · NIDCR · NATIONAL INSTITUTE OF DENTAL & CRANIOFACIAL RESEARCH · PI ROBEY, PAMELA G · 1996 to 2008
$2.3M
Vaccination and microglia in Alzheimer's mouse modelsR01NS046006 · NINDS · UNIVERSITY OF ZURICH · PI HEPPNER, FRANK L · 2005 to 2009
$843k
NINDS NIH HHS R01 NS046006
6 · The paper itself

Abstract

Diffuse infiltration of glioma cells into normal brain tissue is considered to be a main reason for the unfavorable outcomes of patients with malignant gliomas. Invasion of glioma cells into the brain parenchyma is facilitated by metalloprotease-mediated degradation of the extracellular matrix. Metalloproteases are released as inactive pro-forms and get activated upon cleavage by membrane bound metalloproteases. Here, we show that membrane type 1 metalloprotease (MT1-MMP) is up-regulated in glioma-associated microglia, but not in the glioma cells. Overexpression of MT1-MMP is even lethal for glioma cells. Glioma-released factors trigger the expression and activity of MT1-MMP via microglial toll-like receptors and the p38 MAPK pathway, as deletion of the toll-like receptor adapter protein MyD88 or p38 inhibition prevented MT1-MMP expression and activity in cultured microglial cells. Microglial MT1-MMP in turn activates glioma-derived pro-MMP-2 and promotes glioma expansion, as shown in an ex vivo model using MT1-MMP-deficient brain tissue and a microglia depletion paradigm. Finally, MyD88 deficiency or microglia depletion largely attenuated glioma expansion in 2 independent in vivo models.

Indexed as

AnimalsBlotting, WesternBrain NeoplasmsCell Line, TumorEnzyme PrecursorsFemaleGelatinasesGene Expression Regulation, NeoplasticGliomaGreen Fluorescent ProteinsHumansImmunohistochemistryMaleMatrix Metalloproteinase 14MiceMice, Inbred C57BLEnzyme PrecursorsGelatinasesGreen Fluorescent ProteinsMatrix Metalloproteinase 14Myd88 protein, mouseMyeloid Differentiation Factor 88p38 Mitogen-Activated Protein KinasesprogelatinaseToll-Like Receptors

Identifiers

PMID19617536
PMCPMC2718387
OpenAlexW2048898424

What OpenQuestion holds

Textmetadata
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.