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Poly(3-hydroxybutyrate): Promising biomaterial for bone tissue engineering.

Barbara Dariš1, Željko Knez2

  • 1University of Maribor, Faculty of Medicine, Institute of Biomedical Sciences, Maribor, Slovenia.

Acta Pharmaceutica (Zagreb, Croatia)
|November 3, 2019
PubMed
Summary

Poly(3-hydroxybutyrate), a natural polymer, shows promise for bone tissue engineering due to its biocompatibility and biodegradability. Studies confirm its effectiveness in promoting bone regeneration, both alone and in composites.

Keywords:
biopolymersbone tissue engineeringosteoblastspoly(3-hydroxybutyrate)

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Polymer Science

Background:

  • Poly(3-hydroxybutyrate) (PHB) is a natural, biocompatible, and biodegradable polymer produced by bacteria.
  • PHB has potential biomedical applications including cardiovascular patches, tissue engineering scaffolds, and drug carriers.
  • Recent research focuses on modifying PHB for enhanced bone tissue engineering applications.

Purpose of the Study:

  • To review recent in vitro and in vivo studies on PHB and its composites for bone tissue engineering.
  • To emphasize the bioactivity and biocompatibility of PHB with bone cells.
  • To explore the potential of PHB-based materials in promoting bone regeneration.

Main Methods:

  • Review of in vitro studies using animal and human osteoblasts with PHB and its composites (e.g., with hydroxyapatite and bioglass).
  • Analysis of in vivo studies involving the implantation of PHB patches in animal models (cats, minipigs, rats).
  • Evaluation of physico-chemical modifications of PHB to improve its properties for bone regeneration.

Main Results:

  • PHB and its composites demonstrate good biocompatibility and biodegradability with osteoblasts.
  • In vitro testing shows promising results for osteoinductivity of PHB composites.
  • In vivo studies confirm effective bone regeneration using PHB patches in various animal models.

Conclusions:

  • Poly(3-hydroxybutyrate) and its composites are highly suitable for bone tissue engineering applications.
  • PHB exhibits excellent bioactivity and biocompatibility, supporting bone cell growth and regeneration.
  • Further research into PHB modifications can optimize its performance for clinical bone defect repair.