Cited by 35Electrospun Nanofibers in Biomedical ApplicationsTissue Engineering and Regenerative MedicineSilk-based biomaterials and applications

Abdominal wall reconstruction by a regionally distinct biocomposite of extracellular matrix digest and a biodegradable elastomer: Abdominal wall reconstruction by a new biocomposite scaffold

Open access
Takanari, Keisuke, Hong, Yi, Hashizume, Ryotaro, Huber, Alexander, Amoroso, Nicholas J., D'Amore, Antonio, Badylak, Stephen F., Wagner, William R.·2016·Journal of Tissue Engineering and Regenerative Medicine

Abstract

Current extracellular matrix (ECM) derived scaffolds offer promising regenerative responses in many settings, however in some applications there may be a desire for more robust and long lasting mechanical properties. A biohybrid composite material that offers both strength and bioactivity for optimal healing towards native tissue behavior may offer a solution to this problem. A regionally distinct biocomposite scaffold composed of a biodegradable elastomer (poly(ester urethane)urea) and porcine dermal ECM gel was generated to meet this need by a concurrent polymer electrospinning/ECM gel electrospraying technique where the electrosprayed component was varied temporally during the processing. A sandwich structure was achieved with polymer fiber rich upper and lower layers for structural support and an ECM-rich inner layer to encourage cell ingrowth. Increasing the upper and lower layer fiber content predictably increased tensile strength. In a rat full thickness abdominal wall defect model, the sandwich scaffold design maintained its thickness whereas control biohybrid scaffolds lacking the upper and lower fiber-rich regions failed at 8 weeks. Sandwich scaffold implants also showed higher collagen content 4 and 8 weeks after implantation, exhibited an increased M2 macrophage phenotype response at later times and developed biaxial mechanical properties better approximating native tissue. By employing a processing approach that creates a sheet-form scaffold with regionally distinct zones, it was possible to improve biological outcomes in body wall repair and provide the means for further tuning scaffold mechanical parameters when targeting other applications. Copyright © 2013 John Wiley & Sons, Ltd.

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Authors
Takanari, K., Hong, Y., Hashizume, R., Huber, A., Amoroso, N. J., D'Amore, A., Badylak, S. F., & Wagner, W. R.
Affiliations
  • University of Pittsburgh (US)
  • University of Pittsburgh; McGowan Institute for Regenerative Medicine; Pittsburgh PA USA
Corresponding author
Wagner, William R.
Venue
Journal of Tissue Engineering and Regenerative Medicine
Publisher
Wiley
Published
2013-12-27
Volume
10
Issue
9
Pages
748-761
ISSN
1932-6254 (ISSN-L)
OpenAlex
W2116149220
Cited by
35
References
54
Citations by year
2025: 4 · 2024: 3 · 2023: 1 · 2022: 3 · 2021: 1 · 2020: 1 · 2019: 2 · 2017: 7 · 2016: 9 · 2015: 1 · 2014: 2
FWCI
1.53
Type
journal article
Language
en
Open access
Locations
  • Journal of Tissue Engineering and Regenerative Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Nova Science Publishers (Nova Science Publishers, Inc.) (submittedVersion, other-oa)
Funders
Armed Forces Institute for Regenerative Medicine (#W81XWH-08-2-0032)
Topics
  • Physical Sciences › Materials Science › Biomaterials › Electrospun Nanofibers in Biomedical Applications
  • Health Sciences › Medicine › Surgery › Tissue Engineering and Regenerative Medicine
  • Physical Sciences › Materials Science › Biomaterials › Silk-based biomaterials and applications
Keywords
abdominal wall reconstruction, extracellular matrix gel, poly(ester urethane)urea, biodegradable elastomers, electrospinning, electrospraying, full-thickness abdominal wall defect, tensile strength, collagen deposition, biaxial mechanical properties, tissue engineering
MeSH terms
Animals, Extracellular Matrix, Female, Rats, Inbred Lew, Swine, Absorbable Implants, Dermis, Elastomers, Abdominal Wall

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