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Updated: Nov 22, 2025

Author Spotlight: Advancing Tissue Regeneration and Disease Modeling with Dental Pulp Stem Cells
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Decellularized pulp matrix as scaffold for mesenchymal stem cell mediated bone regeneration.

Dong Joon Lee1, Patricia Miguez1,2, Jane Kwon1,3

  • 1Oral and Craniofacial Health Science Institute, School of Dentistry, University of North Carolina, Chapel Hill, NC, USA.

Journal of Tissue Engineering
|January 8, 2021
PubMed
Summary

Acellular pulp bioscaffolds promote bone regeneration by enhancing mesenchymal stem cell (MSC) mineralization. These scaffolds show significant potential for craniofacial bone tissue engineering applications.

Keywords:
Decellularized pulp matrixbiomineralizationcritical sized defectdystrophic calcificationmesenchymal stem cells

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Tissue Engineering

Background:

  • Bone repair scaffolds require effective biomineralization by mesenchymal stem cells (MSCs).
  • Decellularized pulp matrices (DPM) show regenerative potential in endodontics.
  • Pulp stones, a form of dystrophic calcification, inspired the use of pulp matrices for bone repair.

Purpose of the Study:

  • To develop acellular pulp bioscaffolds.
  • To evaluate their potential in facilitating MSC mineralization for bone defect repair.

Main Methods:

  • Pulp decellularization and structural integrity assessment (histological, mechanical, biochemical).
  • MSC seeding and evaluation of proliferation, osteogenic gene expression, and biomineralization in vitro.
  • In vivo assessment of DPM with MSCs in rat critical-sized bone defects using MicroCT, EDX, and histology.

Main Results:

  • Decellularized pulp matrices retained structural integrity.
  • DPM demonstrated osteogenic effects on MSCs in vitro.
  • DPM seeded with MSCs significantly enhanced mineralization in bone defects compared to DPM alone.

Conclusions:

  • Acellular pulp bioscaffolds are effective for MSC-mediated bone regeneration.
  • DPM shows promise as a scaffolding material for craniofacial bone tissue engineering.