Elastomeric Trilayer Substrates with Native-like Mechanical Properties for Heart Valve Leaflet Tissue Engineering
Abstract
Heart valve leaflets have a complex trilayered structure with layer-specific orientations, anisotropic tensile properties, and elastomeric characteristics that are difficult to mimic collectively. Previously, trilayer leaflet substrates intended for heart valve tissue engineering were developed with nonelastomeric biomaterials that cannot deliver native-like mechanical properties. In this study, by electrospinning polycaprolactone (PCL) polymer and poly( l -lactide- co -ε-caprolactone) (PLCL) copolymer, we created elastomeric trilayer PCL/PLCL leaflet substrates with native-like tensile, flexural, and anisotropic properties and compared them with trilayer PCL leaflet substrates (as control) to find their effectiveness in heart valve leaflet tissue engineering. These substrates were seeded with porcine valvular interstitial cells (PVICs) and cultured for 1 month in static conditions to produce cell-cultured constructs. The PCL/PLCL substrates had lower crystallinity and hydrophobicity but higher anisotropy and flexibility than PCL leaflet substrates. These attributes contributed to more significant cell proliferation, infiltration, extracellular matrix production, and superior gene expression in the PCL/PLCL cell-cultured constructs than in the PCL cell-cultured constructs. Further, the PCL/PLCL constructs showed better resistance to calcification than PCL constructs. Trilayer PCL/PLCL leaflet substrates with native-like mechanical and flexural properties could significantly improve heart valve tissue engineering.
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Elastic three-layer PCL/PLCL lobular substrate prepared by electrospinning has natural tensile, bending and anisotropic properties, better anisotropy and flexibility, and better meets heart valve needs.
“Snyder et al. prepared an elastic three-layer PCL/PLCL lobular substrate with natural tensile, bending and anisotropic properties through electrospinning technology. This composite material has better anisotropy and flexibility, and can better meet the needs of heart valves [172].”
From Application of PLCL as a biodegradable polymer in biomedical engineering (2026) · cites this paper as [172]
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Application of PLCL as a biodegradable polymer in biomedical engineering
Zhao, Y., & Liu, H. (2026) · Journal of Materials Science Materials in Medicine · doi:10.1007/s10856-026-07016-3 · Cited by 7 · see citing works
- Authors
- Snyder, Y., & Jana, S.
- Affiliations
- University of Missouri (US)
- Corresponding author
- Jana, Soumen
- ORCID
- Jana, Soumen
- Venue
- ACS Biomaterials Science & Engineering
- Publisher
- American Chemical Society (ACS)
- Published
- 2023-02-20
- Volume
- 9
- Issue
- 3
- Pages
- 1570-1584
- ISSN
- 2373-9878 (ISSN-L)
- OpenAlex
- W4321369055
- Cited by
- 15
- References
- 90
- Citations by year
- 2026: 5 · 2025: 3 · 2024: 5 · 2023: 2
- FWCI
- 4.00
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- ACS Biomaterials Science & Engineering (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Heart, Lung, and Blood Institute (R00HL134823)
- Topics
- Health Sciences › Medicine › Surgery › Tissue Engineering and Regenerative Medicine
- Physical Sciences › Materials Science › Biomaterials › Electrospun Nanofibers in Biomedical Applications
- Physical Sciences › Engineering › Biomedical Engineering › Bone Tissue Engineering Materials
- Keywords
- polycaprolactone, poly(L-lactide-co-ε-caprolactone), electrospinning, mechanical anisotropy, calcification resistance, extracellular matrix synthesis, cell proliferation
- MeSH terms
- Animals, Aortic Valve, Aortic Valve Stenosis, Calcinosis, Cells, Cultured, Polymers, Swine, Tissue Engineering, Tissue Scaffolds
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