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Published on: September 27, 2013
A biocompatible and flexible medium chain length PHA, P(3HB-co-20mol%3HHx) for neural tissue engineering
Lara Santolin1, Caroline S Taylor2, Björn Weiske3
1School of Chemical, Materials and Biological Engineering, Faculty of Engineering, University of Sheffield, Sheffield, South Yorkshire S3 7HQ, UK; Technische Universität Berlin, Institute of Biotechnology, Chair of Bioprocess Engineering, Ackerstraße 76 ACK24, Berlin 13355, Germany.
Polyhydroxyalkanoates (PHAs) show promise for nerve tissue engineering. A novel P(3HB-co-3HHx) material demonstrated superior neuronal cell support and differentiation compared to traditional P(3HB) and PCL, indicating its potential for nerve repair applications.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Polymer Chemistry
Background:
- Polyhydroxyalkanoates (PHAs) are biodegradable polymers with potential in nerve tissue engineering.
- Poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) [P(3HB-co-3HHx)] offers improved flexibility and biocompatibility over Poly(3-hydroxybutyrate) [P(3HB)].
- Polycaprolactone (PCL) is an FDA-approved biopolymer currently used in peripheral nerve repair.
Purpose of the Study:
- To evaluate the potential of P(3HB-co-20mol%3HHx) for nerve tissue engineering.
- To compare P(3HB-co-20mol%3HHx) with P(3HB) and PCL.
- To assess neuronal cell response to these biomaterials.
Main Methods:
- Production of P(3HB-co-20mol%3HHx) via engineered Cupriavidus necator fermentation.
- Preparation of solvent-cast films of P(3HB-co-20mol%3HHx), P(3HB), and PCL.
- Evaluation of film morphology, topography, mechanical properties, and support for NG108-15 neuronal cell adhesion, proliferation, viability, and differentiation.
Main Results:
- P(3HB-co-20mol%3HHx) exhibited more suitable mechanical properties for soft tissue engineering than P(3HB).
- P(3HB-co-20mol%3HHx) films supported superior NG108-15 neuronal cell adhesion, proliferation, and viability.
- P(3HB-co-20mol%3HHx) films promoted NG108-15 neuronal cell differentiation, outperforming PCL.
Conclusions:
- P(3HB-co-20mol%3HHx) is a promising biomaterial for nerve tissue engineering applications.
- This PHA copolymer demonstrates enhanced neuronal cell support and differentiation capabilities.
- P(3HB-co-20mol%3HHx) may offer advantages over PCL for peripheral nerve repair.
