Evidence map›Paper›PMID 18802039›Full record

ArticleStem cells (Dayton, Ohio)2008

Secreted proteoglycans directly mediate human embryonic stem cell-basic fibroblast growth factor 2 interactions critical for proliferation.

Mark E Levenstein, W Travis Berggren, Ji Eun Lee, Kevin R Conard, Rachel A Llanas, Ryan J Wagner, Lloyd M Smith, James A Thomson

Open access · bronzeAbstract read
In one paragraph

Article in Stem cells (Dayton, Ohio), 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

23 citing papers in PubMed, 46 citations in OpenAlex.

  1. Glycosylation in Stem Cell Biology.Handbook of experimental pharmacology · 2025
    Review
  2. Cell Surface and Functional Features of Cortical Bone Stem Cells.International journal of molecular sciences · 2021
    Article
  3. Review
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Heparan sulfate biosynthesis enzymes in embryonic stem cell biology.The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society · 2012
    Review
  14. Article
  15. Article
  16. Article
  17. Surfaces that sequester serum-borne heparin amplify growth factor activity.Advanced materials (Deerfield Beach, Fla.) · 2011
    Article
  18. Article
  19. Harnessing endogenous growth factor activity modulates stem cell behavior.Integrative biology : quantitative biosciences from nano to macro · 2011
    Article
  20. Article
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

8 authors at 3 institutions in 1 country.

Mark E LevensteinWiCell Research Institute, Madison, Wisconsin, USA. markl@cdibios.com
W Travis Berggren
Ji Eun Lee
Kevin R Conard
Rachel A Llanas
Ryan J Wagner
Lloyd M Smith
James A Thomson
WiCell · USEnergy Center of Wisconsin · USUniversity of Wisconsin–Madison · US

Funding

Wisconsin Stem Cell Research CenterP20GM069981 · NIGMS · WICELL RESEARCH INSTITUTE · PI THOMSON, JAMES ALEXANDER · 2003 to 2006
$3.0M
NEUTROPHIL AND O2 RADICAL MEDIATED ENDOTHELIAL INJURYR01HL028182 · NHLBI · UNIVERSITY OF COLORADO DENVER · PI REPINE, JOHN E · 1985 to 1987
–
NHLBI NIH HHS N01 HV028182NHLBI NIH HHS N01-HV28182NIGMS NIH HHS P20 GM069981NIGMS NIH HHS P20-GM069981
6 · The paper itself

Abstract

Human embryonic stem (ES) cells can be maintained in an undifferentiated state if the culture medium is first conditioned on a layer of mouse embryonic fibroblast (MEF) feeder cells. Here we show that human ES cell proliferation is coordinated by MEF-secreted heparan sulfate proteoglycans (HSPG) in conditioned medium (CM). These HSPG and other heparinoids can stabilize basic fibroblast growth factor (FGF2) in unconditioned medium at levels comparable to those observed in CM. They also directly mediate binding of FGF2 to the human ES cell surface, and their removal from CM impairs proliferation. Finally, we have developed a purification scheme for MEF-secreted HSPG in CM. Using column chromatography, immunoblotting, and mass spectrometry-based proteomic analysis, we have identified multiple HSPG species in CM. The results demonstrate that HSPG are key signaling cofactors in CM-based human ES cell culture.

Indexed as

Gene Expression RegulationAnimalsCell MembraneCell ProliferationChromatographyEmbryonic Stem CellsFibroblast Growth Factor 2FibroblastsHumansMass SpectrometryMiceModels, BiologicalProtein BindingProteoglycansSignal TransductionFibroblast Growth Factor 2Proteoglycans

Identifiers

PMID18802039
PMCPMC2605780
OpenAlexW2121906979

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.