Evidence map›Paper›PMID 24034500›Full record

ArticleBiomaterials2013

Aqueous two-phase printing of cell-containing contractile collagen microgels.

Christopher Moraes, Arlyne B Simon, Andrew J Putnam, Shuichi Takayama

Open access · greenAbstract read
In one paragraph

Article in Biomaterials, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
3.7field-weighted citation impact, top 7% 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

20 citing papers in PubMed, 61 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Enhanced Bone Remodeling After Fracture Priming.Calcified tissue international · 2022
    Article
  5. Review
  6. Review
  7. Article
  8. Review
  9. Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Review
  18. Article
  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

4 authors at 2 institutions in 1 country.

Christopher MoraesDepartment of Biomedical Engineering, University of Michigan, Ann Arbor, USA; Biointerfaces Institute, University of Michigan, Ann Arbor, USA.
Arlyne B Simon
Andrew J Putnam
Shuichi Takayama
BioSurfaces (United States) · USUniversity of Michigan–Ann Arbor · US

Funding

Microfluidic Models of Metastatic CancerR01CA136829 · NCI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI LUKER, GARY D · 2009 to 2013
$1.5M
Modeling Therapy of Disseminated Cancer Cells in Bone Marrow (PQ 17)R01CA170198 · NCI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI LUKER, GARY D, TAKAYAMA, SHUICHI · 2012 to 2015
$1.4M
Microfluidic Analysis of Oscillatory Signaling Pathways Using Phase LockingR01GM096040 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI TAKAYAMA, SHUICHI · 2011 to 2014
$1.1M
NCI NIH HHS CA136829NCI NIH HHS CA170198NCI NIH HHS R01 CA136829NCI NIH HHS R01 CA170198NIGMS NIH HHS GM096040NIGMS NIH HHS R01 GM096040
6 · The paper itself

Abstract

This work describes the use of aqueous two-phase systems to print cell-containing contractile collagen microdroplets. The fully aqueous conditions enable convenient formation of sub-microliter 'microgels' that are much smaller than otherwise possible to fabricate while maintaining high cell viability. The produced microgels contract over several days, mimicking the behavior of macroscale contraction assays, which have been valued as an important biological readout for over three decades. Use of microgels not only reduces reagent consumption and increases throughput of the assay, but also improves transport of molecules into and out of the collagen matrix, thereby enabling efficient and more precise studies of timed stimulation profiles. Utility of the technology is demonstrated by analyzing the effects of TGF-β1 on gel contraction, and we demonstrate that brief 'burst' stimulation profiles in microgels prompt contraction of the matrix, a feature not observed in the conventional macroscale assay. The fully aqueous process also enables the integration of contractile collagen microgels within existing cell culture systems, and we demonstrate proof-of-principle experiments in which a contractile collagen droplet is fabricated in situ on an existing epithelial monolayer. The simplicity, versatility and ability to robustly produce collagen microgels should allow effective translation of this microengineering technology into a variety of research environments.

Indexed as

AnimalsBiocompatible MaterialsCells, ImmobilizedCell SurvivalCollagenGelsHEK293 CellsHumansMiceNIH 3T3 CellsTransforming Growth Factor beta1WaterBiocompatible MaterialsCollagenGelsTransforming Growth Factor beta1WaterAqueous two-phase systemCollagenContractionMicropatterningMiniaturizationTimed stimulation

Identifiers

PMID24034500
PMCPMC3819461
OpenAlexW2074527963

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.