Evidence map›Paper›PMID 21121876›Full record

ArticleTissue engineering. Part A2011

Autocrine-controlled formation and function of tissue-like aggregates by primary hepatocytes in micropatterned hydrogel arrays.

Courtney M Williams, Geeta Mehta, Shelly R Peyton, Adam S Zeiger, Krystyn J Van Vliet, Linda G Griffith

Open access · greenAbstract read
In one paragraph

Article in Tissue engineering. Part A, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

21 citing papers in PubMed, 43 citations in OpenAlex.

  1. Article
  2. Chemotherapy treatment induces pro-invasive changes in liver ECM composition.Matrix biology : journal of the International Society for Matrix Biology · 2022
    Article
  3. Article
  4. Review
  5. Engineering Modular 3D Liver Culture MicroenvironmentsAdvanced nanobiomed research · 2022
    Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Degradable hydrogels derived from PEG-diacrylamide for hepatic tissue engineering.Journal of biomedical materials research. Part A · 2015
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. 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

6 authors at 1 institution in 1 country.

Courtney M WilliamsDepartment of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Geeta Mehta
Shelly R Peyton
Adam S Zeiger
Krystyn J Van Vliet
Linda G Griffith
Massachusetts Institute of Technology · US

Funding

TOXICOLOGY CORE UNITP30ES002109 · NIEHS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI LEVINE, STUART S · 1985 to 2020
$25.6M
Self-Assembling Peptides for Tissue EngineeringR01EB003805 · NIBIB · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI GRODZINSKY, ALAN J. · 2005 to 2009
$6.5M
Bioengineering partnership to improve chemical hazard testing paradigmsR01ES015241 · NIEHS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI RUSYN, IVAN · 2008 to 2012
$3.1M
NIBIB NIH HHS R01EB003805NIEHS NIH HHS P30ES002109NIEHS NIH HHS R01 ES015241NIEHS NIH HHS R01ES015241
6 · The paper itself

Abstract

The liver carries out a variety of essential functions regulated in part by autocrine signaling, including hepatocyte-produced growth factors and extracellular matrix (ECM). The local concentrations of autocrine factors are governed by a balance between receptor-mediated binding at the cell surface and diffusion into the local matrix and are thus expected to be influenced by the dimensionality of the cell culture environment. To investigate the role of growth factor and ECM-modulated autocrine signaling in maintaining appropriate primary hepatocyte survival, metabolic functions, and polarity, we created three-dimensional cultures of defined geometry using micropatterned semisynthetic polyethylene glycol-fibrinogen hydrogels to provide a mechanically compliant, nonadhesive material platform that could be modified by cell-secreted factors. We found that in the absence of exogenous peptide growth factors or ECM, hepatocytes retain the epidermal growth factor (EGF) receptor ligands (EGF and transforming growth factor-α) and the proto-oncogenic mesenchymal epithelial transition factor (c-MET) ligand hepatocyte growth factor (HGF), along with fibronectin. Further, hepatocytes cultured in this three-dimensional microenvironment maintained high levels of liver-specific functions over the 10-day culture period. Function-blocking inhibitors of α5β1 or EGF receptor dramatically reduced cell viability and function, suggesting that signaling by both these receptors is needed for in vitro survival and function of hepatocytes in the absence of other exogenous signals.

Indexed as

AlbuminsAnimalsCells, CulturedCell SurvivalEpidermal Growth FactorFibrinogenHepatocyte Growth FactorHepatocytesHydrogelsMaleMicroscopy, FluorescencePolyethylene GlycolsRatsRats, Inbred F344Transforming Growth Factor alphaUreaAlbuminsEpidermal Growth FactorFibrinogenHepatocyte Growth FactorHydrogelsPolyethylene GlycolsTransforming Growth Factor alphaUrea

Identifiers

PMID21121876
PMCPMC3063704
OpenAlexW2040868970

What OpenQuestion holds

Textmetadata
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.