Electrospun P34HB fibres: a scaffold for tissue engineering

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Polymer Science

Background:

• Polyhydroxyalkanoates (PHAs) are a class of biodegradable polymers with potential biomedical applications.
• Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P34HB) is a fourth-generation PHA with tunable properties.
• Investigating novel biomaterials for tissue engineering is crucial for developing advanced therapies.

Purpose of the Study:

• To evaluate the suitability of electrospun P34HB fibers for supporting mouse adipose-derived stem cells (mASCs).
• To assess the viability, proliferation, and osteogenic differentiation of mASCs on P34HB scaffolds.
• To determine the potential of P34HB as a scaffold material for bone tissue engineering.

Main Methods:

• P34HB was processed into electrospun fibers and films.
• Scanning electron microscopy, fluorescence microscopy, and confocal laser scanning microscopy were used for morphological characterization.
• Cell adhesion, proliferation, and cytotoxicity were assessed using MTT and CCK-8 assays.
• Osteogenic gene expression (Runx2, OPN, OCN) was analyzed by real-time PCR after osteogenic induction.

Main Results:

• mASCs demonstrated good adhesion and proliferation on both electrospun P34HB fibers and films.
• MTT and CCK-8 assays confirmed the cytocompatibility of P34HB, supporting cell adhesion and proliferation.
• P34HB matrices significantly promoted the expression of osteogenic markers Runx2, OPN, and OCN upon osteogenic induction.

Conclusions:

• Electrospun P34HB fibers effectively support the survival, proliferation, and osteogenic differentiation of mASCs.
• P34HB scaffolds fabricated via electrospinning are promising candidates for bone tissue engineering applications.
• This study highlights the potential of P34HB as a biomaterial for regenerative medicine.