Evidence map›Paper›PMID 30571786›Full record

ArticlePloS one2018

Microfluidic device to attain high spatial and temporal control of oxygen.

Sandra F Lam, Venktesh S Shirure, Yunli E Chu, Alan G Soetikno, Steven C George

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

35 citing papers in PubMed, 61 citations in OpenAlex.

  1. Article
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  5. Angiogenesis: Biological Mechanisms and In Vitro Models.Annals of biomedical engineering · 2025
    Review
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  7. Article
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  15. Engineering approaches for cardiac organoid formation and their characterization.Translational research : the journal of laboratory and clinical medicine · 2022
    Review
  16. Review
  17. Article
  18. Article
  19. Review
  20. Lab on a chip · 2021
    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

5 authors at 2 institutions in 1 country.

Sandra F LamDepartment of Biomedical Engineering, Washington University in St. Louis, St. Louis, Missouri, United States of America.ORCID 0000-0001-5242-9763
Venktesh S ShirureDepartment of Biomedical Engineering, University of California Davis, Davis, California, United States of America.
Yunli E ChuDepartment of Biomedical Engineering, Washington University in St. Louis, St. Louis, Missouri, United States of America.
Alan G SoetiknoDepartment of Biomedical Engineering, Washington University in St. Louis, St. Louis, Missouri, United States of America.
Steven C GeorgeDepartment of Biomedical Engineering, University of California Davis, Davis, California, United States of America.
Washington University in St. Louis · USUniversity of California, Davis · US

Funding

A 3-D biomimetic human islet to model beta cell function in health and diseaseUC4DK104202 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI CHRISTMAN, KAREN L, GEORGE, STEVEN CARL · 2014 to 2016
$4.9M
Linking DDR2 expression, the cancer-associated fibroblast, and angiogenesis in the tumor microenvironmentUH3TR000481 · NCATS · WASHINGTON UNIVERSITY · PI GEORGE, STEVEN CARL · 2014 to 2016
$2.8M
Training Program in Cardiovascular Applied Research and EntrepreneurshipT32HL116270 · NHLBI · UNIVERSITY OF CALIFORNIA-IRVINE · PI HUGHES, CHRISTOPHER C. W. · 2013 to 2022
$1.6M
A 3-D In Vitro Platform of Tumor Metastasis (PQ24)R01CA170879 · NCI · WASHINGTON UNIVERSITY · PI GEORGE, STEVEN CARL · 2012 to 2015
$1.3M
Center for Clinical and Translational ScienceKL2TR000048 · NCATS · UNIVERSITY OF ILLINOIS AT CHICAGO · PI AZAR, DIMITRI T, MERMELSTEIN, ROBIN J. · 2012 to 2014
$559k
NCATS NIH HHS KL2 TR000048NCATS NIH HHS UH3 TR000481NCI NIH HHS R01 CA170879NHLBI NIH HHS T32 HL116270NIDDK NIH HHS UC4 DK104202
6 · The paper itself

Abstract

Microfluidic devices have been successfully used to recreate in vitro biological microenvironments, including disease states. However, one constant issue for replicating microenvironments is that atmospheric oxygen concentration (21% O2) does not mimic physiological values (often around 5% O2). We have created a microfluidic device that can control both the spatial and temporal variations in oxygen tensions that are characteristic of in vivo biology. Additionally, since the microcirculation is responsive to hypoxia, we used a 3D sprouting angiogenesis assay to confirm the biological relevance of the microfluidic platform. Our device consists of three parallel connected tissue chambers and an oxygen scavenger channel placed adjacent to these tissue chambers. Experimentally measured oxygen maps were constructed using phosphorescent lifetime imaging microscopy and compared with values from a computational model. The central chamber was loaded with endothelial and fibroblast cells to form a 3D vascular network. Four to six days later, fibroblasts were loaded into the side chambers, and a day later the oxygen scavenger (sodium sulfite) was flowed through the adjacent channel to induce a spatial and temporal oxygen gradient. Our results demonstrate that both constant chronic and intermittent hypoxia can bias vessel growth, with constant chronic hypoxia showing higher degrees of biased angiogenesis. Our simple design provides consistent control of spatial and temporal oxygen gradients in the tissue microenvironment and can be used to investigate important oxygen-dependent biological processes in conditions such as cancer and ischemic heart disease.

Indexed as

Cell HypoxiaCell Line, TumorCellular MicroenvironmentFibroblastsHumansMicrofluidic Analytical TechniquesOxygenSulfitesOxygensodium sulfiteSulfites

Identifiers

PMID30571786
PMCPMC6301786
OpenAlexW2903808794

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.