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Related Experiment Videos

Aligned core-shell nanofibers delivering bioactive proteins.

I C Liao1, S Y Chew, K W Leong

  • 1Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA.

Nanomedicine (London, England)
|August 25, 2007
PubMed
Summary
This summary is machine-generated.

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This study demonstrates co-axial electrospinning for creating protein-releasing nanofibers for tissue engineering. Poly(ethylene glycol) controls release, enabling sustained delivery of growth factors for regenerative medicine.

Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Regenerative Medicine

Background:

  • Continuous nanostructures can deliver topographical and biochemical cues for tissue regeneration.
  • Co-axial electrospinning offers a method to embed proteins within nanofibers.

Purpose of the Study:

  • To develop aligned nanofibers using co-axial electrospinning encapsulating bovine serum albumin (BSA) and platelet-derived growth factor-bb (PDGF-bb).
  • To demonstrate controlled release of BSA and bioactivity retention of PDGF-bb.
  • To explore applications in regenerative medicine.

Main Methods:

  • Co-axial electrospinning of poly(epsilon-caprolactone) (PCL) nanofibers.
  • Incorporation of poly(ethylene glycol) (PEG) as a porogen in the PCL shell for controlled release.

Related Experiment Videos

  • Encapsulation of BSA and PDGF-bb within the nanofibers.

    • Main Results:

    • BSA release half-lives ranged from 1 to 20 days, dependent on PEG concentration and molecular weight.
    • Optimized PDGF-bb-loaded nanofibers achieved complete release with near zero-order kinetics.
    • Preserved bioactivity of PDGF-bb was confirmed.

    Conclusions:

    • Co-axial electrospinning is a versatile technique for controlled delivery of biochemical signals.
    • This approach holds promise for tissue engineering and regenerative medicine applications.