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Related Experiment Video

Updated: May 21, 2026

Use of Human Perivascular Stem Cells for Bone Regeneration
07:05

Use of Human Perivascular Stem Cells for Bone Regeneration

Published on: May 25, 2012

Bone repair using periodontal ligament progenitor cell-seeded constructs.

G Tour1, M Wendel, G Moll

  • 1Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden.

Journal of Dental Research
|June 28, 2012
PubMed
Summary

This study introduces a novel biomimetic scaffold (HA-ECM) that enhances the osteogenic differentiation of periodontal ligament progenitor cells (PDLCs). These engineered constructs significantly improved bone regeneration in a rat calvarial defect model, showing promise for craniofacial applications.

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Last Updated: May 21, 2026

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Visualizing Angiogenesis by Multiphoton Microscopy In Vivo in Genetically Modified 3D-PLGA/nHAp Scaffold for Calvarial Critical Bone Defect Repair
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Visualizing Angiogenesis by Multiphoton Microscopy In Vivo in Genetically Modified 3D-PLGA/nHAp Scaffold for Calvarial Critical Bone Defect Repair

Published on: September 7, 2017

Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Regenerative Medicine

Background:

  • Successful tissue engineering relies on scaffolds that guide progenitor cell differentiation.
  • Periodontal ligament progenitor cells (PDLCs) are crucial for periodontal regeneration.
  • Developing effective scaffolds is key for craniofacial bone repair.

Purpose of the Study:

  • To investigate the osteogenic differentiation of PDLCs on a novel hydroxyapatite-ECM (HA-ECM) biomimetic construct.
  • To evaluate the in vivo efficacy of PDLC-seeded HA-ECM constructs in a rat calvarial defect model.

Main Methods:

  • PDLCs were phenotyped for mesenchymal stem cell markers.
  • PDLCs were cultured on HA-ECM or HA scaffolds in osteogenic media.
  • Assays included MTT, alkaline phosphatase (ALP), and real-time qPCR.
  • In vivo evaluation involved histomorphometric analysis of calvarial defects at 12 weeks.

Main Results:

  • PDLCs on HA-ECM exhibited significantly higher ALP activity and bone-related gene expression.
  • PDLC-seeded HA-ECM constructs significantly enhanced calvarial bone repair.
  • Optimal bone formation was observed with constructs cultured for 14 days prior to implantation.

Conclusions:

  • PDLC-seeded HA-ECM constructs promote osteogenic differentiation and enhance craniofacial bone regeneration.
  • This biomimetic approach represents a promising strategy for bone defect repair.
  • Further development of HA-ECM scaffolds could advance craniofacial tissue engineering therapies.