Evidence map›Paper›PMID 34342179›Full record

ArticleAdvanced healthcare materials2021

3D Printing of Microgel Scaffolds with Tunable Void Fraction to Promote Cell Infiltration.

Alexis J Seymour, Sungchul Shin, Sarah C Heilshorn

Open access · greenAbstract read
In one paragraph

Article in Advanced healthcare materials, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed
8.7field-weighted citation impact, top 1% 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

67 citing papers in PubMed, 151 citations in OpenAlex.

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7 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 1 institution in 1 country.

Alexis J SeymourDepartment of Bioengineering, Stanford University, Stanford, CA, 94305, USA.
Sungchul ShinDepartment of Materials Science & Engineering, Stanford University, Stanford, CA, 94305, USA.
Sarah C HeilshornDepartment of Materials Science & Engineering, Stanford University, Stanford, CA, 94305, USA.ORCID 0000-0002-9801-6304
Stanford University · US

Funding

Engineered matrix microarrays to enhance the regenerative potential of iPSC-derived endothelial cellsR01HL142718 · NHLBI · STANFORD UNIVERSITY · PI HEILSHORN, SARAH C, HUANG, NGAN F. · 2018 to 2021
$1.6M
NHLBI NIH HHS R01 HL142718NIH HHS R01 HL142718
6 · The paper itself

Abstract

Granular, microgel-based materials have garnered interest as promising tissue engineering scaffolds due to their inherent porosity, which can promote cell infiltration. Adapting these materials for 3D bioprinting, while maintaining sufficient void space to enable cell migration, can be challenging, since the rheological properties that determine printability are strongly influenced by microgel packing and void fraction. In this work, a strategy is proposed to decouple printability and void fraction by blending UV-crosslinkable gelatin methacryloyl (GelMA) microgels with sacrificial gelatin microgels to form composite inks. It is observed that inks with an apparent viscosity greater than ≈100 Pa s (corresponding to microgel concentrations ≥5 wt%) have rheological properties that enable extrusion-based printing of multilayered structures in air. By altering the ratio of GelMA to sacrificial gelatin microgels, while holding total concentration constant at 6 wt%, a family of GelMA:gelatin microgel inks is created that allows for tuning of void fraction from 0.20 to 0.57. Furthermore, human umbilical vein endothelial cells (HUVEC) seeded onto printed constructs are observed to migrate into granular inks in a void fraction-dependent manner. Thus, the family of microgel inks holds promise for use in 3D printing and tissue engineering applications that rely upon cell infiltration.

Indexed as

BioprintingMicrogelsGelatinHumansHuman Umbilical Vein Endothelial CellsMethacrylatesPrinting, Three-DimensionalTissue EngineeringTissue ScaffoldsGelatinMethacrylatesMicrogels3D printingcell infiltrationendothelial cellsgelatin methacryloylmicrogelssacrificial inksvoid fractions

Identifiers

PMID34342179
PMCPMC8612872
OpenAlexW3192491361

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.