The effect of a bioactive collagen membrane releasing PDGF or GDF-5 on bone regeneration

Seiichi Yamano, Ken Haku, Takuto Yamanaka, Jisen Dai, Tadahiro Takayama, Ryutaro Shohara, Keita Tachi, Mika Ishioka, Shigeru Hanatani, Sanjay Karunagaran, Keisuke Wada, Amr M. Moursi

Research output: Contribution to journalArticlepeer-review

Abstract

Regenerative procedures using barrier membrane technology are presently well established in periodontal/endodontic surgery. The objective of this study was to compare the subsequent effects of the released platelet-derived growth factor (PDGF) and growth/differentiation factor 5 (GDF-5) from collagen membranes (CMs) on bone regeneration invitro and invivo. Invitro studies were conducted using MC3T3-E1 mouse preosteoblasts cultured with or without factors. Cell viability, cell proliferation, alkaline phosphatase (ALP) activity and bone marker gene expression were then measured. Invivo studies were conducted by placing CMs with low or high dose PDGF or GDF-5 in rat mandibular defects. At 4 weeks after surgery new bone formation was measured using μCT and histological analysis. The results of invitro studies showed that CM/GDF-5 significantly increased ALP and cell proliferation activities without cytotoxicity in MC3T3-E1 cells when compared to CM/PDGF or CM alone. Gene expression analysis revealed that Runx2 and Osteocalcin were significantly increased in CM/GDF-5 compared to CM/PDGF or control. Quantitative and qualitative μCT and histological analysis for new bone formation revealed that although CM/PDGF significantly enhanced bone regeneration compared to CM alone or control, CM/GDF-5 significantly accelerated bone regeneration to an even greater extent than CM/PDGF. The results also showed that GDF-5 induced new bone formation in a dose-dependent manner. These results suggest that this strategy, using a CM carrying GDF-5, might lead to an improvement in the current clinical treatment of bone defects for periodontal and implant therapy.

Original languageEnglish (US)
Pages (from-to)2446-2453
Number of pages8
JournalBiomaterials
Volume35
Issue number8
DOIs
StatePublished - Mar 2014

Keywords

  • Bone regeneration
  • Collagen membrane
  • GDF-5
  • Growth factor
  • PDGF

ASJC Scopus subject areas

  • Bioengineering
  • Ceramics and Composites
  • Biophysics
  • Biomaterials
  • Mechanics of Materials

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