Evidence map›Paper›PMID 25875288›Full record

ArticlePloS one2015

Endogenous brain pericytes are widely activated and contribute to mouse glioma microvasculature.

Andreas Svensson, Ilknur Özen, Guillem Genové, Gesine Paul, Johan Bengzon

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
3.0field-weighted citation impact, top 10% 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

32 citing papers in PubMed, 52 citations in OpenAlex.

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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

5 authors at 3 institutions in 1 country.

Andreas SvenssonLund Stem Cell Center, BMC B10, Skåne University Hospital, Lund, Sweden; Division of Neurosurgery, Department of Clinical Sciences, Skåne University Hospital, Lund, Sweden.
Ilknur ÖzenTranslational Neurology Group, Division of Neurology, Department of Clinical Sciences, Wallenberg Neuroscience Center, Lund University and Skåne University Hospital, Lund, Sweden.
Guillem GenovéDivision of Vascular Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden.
Gesine PaulTranslational Neurology Group, Division of Neurology, Department of Clinical Sciences, Wallenberg Neuroscience Center, Lund University and Skåne University Hospital, Lund, Sweden.
Johan BengzonLund Stem Cell Center, BMC B10, Skåne University Hospital, Lund, Sweden; Division of Neurosurgery, Department of Clinical Sciences, Skåne University Hospital, Lund, Sweden.
Skåne University Hospital · SEKarolinska Institutet · SELund University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Glioblastoma multiforme (GBM) is the most common brain tumor in adults. It presents an extremely challenging clinical problem, and treatment very frequently fails due to the infiltrative growth, facilitated by extensive angiogenesis and neovascularization. Pericytes constitute an important part of the GBM microvasculature. The contribution of endogenous brain pericytes to the tumor vasculature in GBM is, however, unclear. In this study, we determine the site of activation and the extent of contribution of endogenous brain pericytes to the GBM vasculature. GL261 mouse glioma was orthotopically implanted in mice expressing green fluorescent protein (GFP) under the pericyte marker regulator of G protein signaling 5 (RGS5). Host pericytes were not only activated within the glioma, but also in cortical areas overlying the tumor, the ipsilateral subventricular zone and within the hemisphere contralateral to the tumor. The host-derived activated pericytes that infiltrated the glioma were mainly localized to the tumor vessel wall. Infiltrating GFP positive pericytes co-expressed the pericyte markers platelet-derived growth factor receptor-β (PDGFR-β) and neuron-glial antigen 2. Interestingly, more than half of all PDGFR-β positive pericytes within the tumor were contributed by the host brain. We did not find any evidence that RGS5 positive pericytes adopt another phenotype within glioma in this paradigm. We conclude that endogenous pericytes become activated in widespread areas of the brain in response to an orthotopic mouse glioma. Host pericytes are recruited into the tumor and constitute a major part of the tumor pericyte population.

Indexed as

AnimalsAstrocytesBiomarkers, TumorBrainBrain NeoplasmsCell AdhesionCell HypoxiaCell Line, TumorCell ProliferationFemaleGliomaGreen Fluorescent ProteinsInflammationLamininMice, Inbred C57BLMicrogliaBiomarkers, TumorGreen Fluorescent ProteinsLamininReceptor, Platelet-Derived Growth Factor beta

Identifiers

PMID25875288
PMCPMC4395339
OpenAlexW2008536519

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Registered trials

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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.