Evidence map›Paper›PMID 19516901›Full record

ArticlePloS one2009

The vascular basement membrane as "soil" in brain metastasis.

W Shawn Carbonell, Olaf Ansorge, Nicola Sibson, Ruth Muschel

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 184 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
184citing papers in PubMed, 1 pooled it
11.2field-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

184 citing papers in PubMed, 1 synthesis or guideline pooled it, 331 citations in OpenAlex.

  1. Guideline
  2. Brain metastasis: Opportunities for novel therapies.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026
    Review
  3. Review
  4. Review
  5. Article
  6. Review
  7. Review
  8. Article
  9. Review
  10. Review
  11. Review
  12. Molecular Underpinnings of Brain Metastases.International journal of molecular sciences · 2025
    Review
  13. The role and regulation of integrins in cell migration and invasion.Nature reviews. Molecular cell biology · 2025
    Review
  14. Review
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

124 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

4 authors at 2 institutions in 1 country.

W Shawn CarbonellGray Institute for Radiation Oncology and Biology, University of Oxford, Oxford, UK. bigaxon@bigaxon.com
Olaf Ansorge
Nicola Sibson
Ruth Muschel
CRUK/MRC Oxford Institute for Radiation Oncology · GBUniversity of Oxford · GB

Funding

MOLECULAR MECHANISMS OF METASTASISR01CA046830 · NCI · UNIVERSITY OF PENNSYLVANIA · PI MUSCHEL, RUTH J · 1988 to 2009
$2.7M
Cancer Research UKMedical Research CouncilNCI NIH HHS CA46830NCI NIH HHS R01 CA046830
6 · The paper itself

Abstract

Brain-specific homing and direct interactions with the neural substance are prominent hypotheses for brain metastasis formation and a modern manifestation of Paget's "seed and soil" concept. However, there is little direct evidence for this "neurotropic" growth in vivo. In contrast, many experimental studies have anecdotally noted the propensity of metastatic cells to grow along the exterior of pre-existing vessels of the CNS, a process termed vascular cooption. These observations suggest the "soil" for malignant cells in the CNS may well be vascular, rather than neuronal. We used in vivo experimental models of brain metastasis and analysis of human clinical specimens to test this hypothesis. Indeed, over 95% of early micrometastases examined demonstrated vascular cooption with little evidence for isolated neurotropic growth. This vessel interaction was adhesive in nature implicating the vascular basement membrane (VBM) as the active substrate for tumor cell growth in the brain. Accordingly, VBM promoted adhesion and invasion of malignant cells and was sufficient for tumor growth prior to any evidence of angiogenesis. Blockade or loss of the beta1 integrin subunit in tumor cells prevented adhesion to VBM and attenuated metastasis establishment and growth in vivo. Our data establishes a new understanding of CNS metastasis formation and identifies the neurovasculature as the critical partner for such growth. Further, we have elucidated the mechanism of vascular cooption for the first time. These findings may help inform the design of effective molecular therapies for patients with fatal CNS malignancies.

Indexed as

AnimalsBasement MembraneBrainBrain NeoplasmsCell Line, TumorCell ProliferationCentral Nervous System NeoplasmsHumansIntegrin beta1MiceMice, Inbred BALB CNeoplasm InvasivenessNeoplasm MetastasisNeoplasm TransplantationNeovascularization, PathologicIntegrin beta1

Identifiers

PMID19516901
PMCPMC2689678
OpenAlexW2023291646

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.