Evidence map›Paper›PMID 25000176›Full record

ArticlePloS one2014

Microenvironmental stiffness enhances glioma cell proliferation by stimulating epidermal growth factor receptor signaling.

Vaibhavi Umesh, Andrew D Rape, Theresa A Ulrich, Sanjay Kumar

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 78 papers.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed
4.1field-weighted citation impact, top 6% 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

78 citing papers in PubMed, 137 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Article
  5. Hydrogel Microdroplet Based Glioblastoma Drug Screening Platform.Journal of biomedical materials research. Part A · 2026
    Article
  6. Review
  7. Review
  8. Review
  9. Article
  10. Review
  11. Article
  12. Hydrogel microdroplet based glioblastoma drug screening platform.bioRxiv : the preprint server for biology · 2025
    Article
  13. An Agrin-YAP/TAZ Rigidity Sensing Module Drives EGFR-Addicted Lung Tumorigenesis.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
  14. Article
  15. Profiling Glioma Stem Cell Dynamics via 3D-Based Cell Cycle Reporter Assays.Methods in molecular biology (Clifton, N.J.) · 2025
    Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Review

18 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 1 institution in 1 country.

Vaibhavi UmeshDepartment of Bioengineering, University of California, Berkeley, California, United States of America.
Andrew D RapeDepartment of Bioengineering, University of California, Berkeley, California, United States of America.
Theresa A UlrichDepartment of Bioengineering, University of California, Berkeley, California, United States of America.
Sanjay KumarDepartment of Bioengineering, University of California, Berkeley, California, United States of America.
University of California, Berkeley · US

Funding

Tumor Evolution and Metastasis ProgramP30CA016672 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI Scott Kopetz · 1985 to 2026
$290.8M
TRANS-NETWORK PROJECTSU54CA143836 · NCI · UNIVERSITY OF CALIFORNIA BERKELEY · PI LIPHARDT, JAN T. · 2009 to 2014
$15.1M
Cellular mechanobiology: Biophysics and therapeuticsDP2OD004213 · OD · UNIVERSITY OF CALIFORNIA BERKELEY · PI KUMAR, SANJAY · 2008 to 2008
$2.3M
A novel photopatterning-based paradigm for the study of 3D tumor infiltrationF32CA174361 · NCI · UNIVERSITY OF CALIFORNIA BERKELEY · PI RAPE, ANDREW · 2013 to 2015
$120k
NCI NIH HHS 1F32CA174361NCI NIH HHS 1U54CA143836NCI NIH HHS 2P30CA016672NCI NIH HHS F32 CA174361NCI NIH HHS P30 CA016672NCI NIH HHS U54 CA143836NIH HHS 1DP2OD004213NIH HHS DP2 OD004213
6 · The paper itself

Abstract

The aggressive and rapidly lethal brain tumor glioblastoma (GBM) is associated with profound tissue stiffening and genomic lesions in key members of the epidermal growth factor receptor (EGFR) pathway. Previous studies from our laboratory have shown that increasing microenvironmental stiffness in culture can strongly enhance glioma cell behaviors relevant to tumor progression, including proliferation, yet it has remained unclear whether stiffness and EGFR regulate proliferation through common or independent signaling mechanisms. Here we test the hypothesis that microenvironmental stiffness regulates cell cycle progression and proliferation in GBM tumor cells by altering EGFR-dependent signaling. We began by performing an unbiased reverse phase protein array screen, which revealed that stiffness modulates expression and phosphorylation of a broad range of signals relevant to proliferation, including members of the EGFR pathway. We subsequently found that culturing human GBM tumor cells on progressively stiffer culture substrates both dramatically increases proliferation and facilitates passage through the G1/S checkpoint of the cell cycle, consistent with an EGFR-dependent process. Western Blots showed that increasing microenvironmental stiffness enhances the expression and phosphorylation of EGFR and its downstream effector Akt. Pharmacological loss-of-function studies revealed that the stiffness-sensitivity of proliferation is strongly blunted by inhibition of EGFR, Akt, or PI3 kinase. Finally, we observed that stiffness strongly regulates EGFR clustering, with phosphorylated EGFR condensing into vinculin-positive focal adhesions on stiff substrates and dispersing as microenvironmental stiffness falls to physiological levels. Our findings collectively support a model in which tissue stiffening promotes GBM proliferation by spatially and biochemically amplifying EGFR signaling.

Indexed as

Mechanical PhenomenaSignal TransductionTumor MicroenvironmentBiomechanical PhenomenaCell ProliferationErbB ReceptorsFocal AdhesionsG1 Phase Cell Cycle CheckpointsGene Expression Regulation, NeoplasticGlioblastomaHumansMechanotransduction, CellularNitrogenPhosphorylationProtein TransportS Phase Cell Cycle CheckpointsErbB ReceptorsNitrogen

Identifiers

PMID25000176
PMCPMC4084995
OpenAlexW2158301749

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.