Evidence map›Paper›PMID 21820737›Full record

ArticleBiomaterials2011

Elucidating the mechanobiology of malignant brain tumors using a brain matrix-mimetic hyaluronic acid hydrogel platform.

Badriprasad Ananthanarayanan, Yushan Kim, Sanjay Kumar

Open access · greenAbstract read
In one paragraph

Article in Biomaterials, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 175 papers.

0numbers the graph read from it
0cells of the map it votes in
175citing papers in PubMed
7.4field-weighted citation impact, top 2% 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

175 citing papers in PubMed, 338 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Review
  6. Article
  7. Article
  8. Hydrogel Microdroplet Based Glioblastoma Drug Screening Platform.Journal of biomedical materials research. Part A · 2026
    Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Review
  14. Review
  15. Next-Generation Hydrogels for Biliary Organoid Engineering.Pharmaceuticals (Basel, Switzerland) · 2025
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

115 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

3 authors at 2 institutions in 1 country.

Badriprasad AnanthanarayananDepartment of Bioengineering and California Institute for Quantitative Biosciences, University of California, Berkeley, CA 94720, USA.
Yushan Kim
Sanjay Kumar
University of California, Berkeley · USQB3 · US

Funding

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
NCI NIH HHS 1U54CA143836NCI NIH HHS U54 CA143836NIH HHS 1DP2OD004213NIH HHS DP2 OD004213
6 · The paper itself

Abstract

Glioblastoma multiforme (GBM) is a malignant brain tumor characterized by diffuse infiltration of single cells into the brain parenchyma, which is a process that relies in part on aberrant biochemical and biophysical interactions between tumor cells and the brain extracellular matrix (ECM). A major obstacle to understanding ECM regulation of GBM invasion is the absence of model matrix systems that recapitulate the distinct composition and physical structure of brain ECM while allowing independent control of adhesive ligand density, mechanics, and microstructure. To address this need, we synthesized brain-mimetic ECMs based on hyaluronic acid (HA) with a range of stiffnesses that encompasses normal and tumorigenic brain tissue and functionalized these materials with short Arg-Gly-Asp (RGD) peptides to facilitate cell adhesion. Scanning electron micrographs of the hydrogels revealed a dense, sheet-like microstructure with apparent nanoscale porosity similar to brain extracellular space. On flat hydrogel substrates, glioma cell spreading area and actin stress fiber assembly increased strongly with increasing density of RGD peptide. Increasing HA stiffness under constant RGD density produced similar trends and increased the speed of random motility. In a three-dimensional (3D) spheroid paradigm, glioma cells invaded HA hydrogels with morphological patterns distinct from those observed on flat surfaces or in 3D collagen-based ECMs but highly reminiscent of those seen in brain slices. This material system represents a brain-mimetic model ECM with tunable ligand density and stiffness amenable to investigations of the mechanobiological regulation of brain tumor progression.

Indexed as

Biomechanical PhenomenaBiomimetic MaterialsBrain NeoplasmsCell AdhesionCell CountCell Line, TumorCell MovementCell ProliferationCell ShapeExtracellular MatrixGliomaHumansHyaluronic AcidHydrogelsMethacrylatesMicroscopy, Electron, Scanningarginyl-glycyl-aspartic acidHyaluronic AcidHydrogelsMethacrylatesOligopeptides

Identifiers

PMID21820737
PMCPMC3159794
OpenAlexW1978312684

What OpenQuestion holds

Textmetadata
LicenceTDM
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.