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Isolation, Characterization and Comparative Differentiation of Human Dental Pulp Stem Cells Derived from Permanent Teeth by Using Two Different Methods
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Differentiating dental pulp cells via RGD-dendrimer conjugates.

J K Kim1, R Shukla, L Casagrande

  • 1Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, 1011 N. University, Ann Arbor, MI 48109, USA.

Journal of Dental Research
|October 9, 2010
PubMed
Summary

New therapies using generation 5 polyamidoamine (PAMAM) dendrimers (G5) functionalized with RGD peptides show promise for dental pulp regeneration. These PAMAM dendrimers enhance dental pulp cell differentiation and mineralization, offering potential for treating traumatic dental injuries.

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Isolation, Characterization and Comparative Differentiation of Human Dental Pulp Stem Cells Derived from Permanent Teeth by Using Two Different Methods
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Isolation, Culture, and Characterization of Dental Pulp Stem Cells from Human Deciduous and Permanent Teeth
02:33

Isolation, Culture, and Characterization of Dental Pulp Stem Cells from Human Deciduous and Permanent Teeth

Published on: May 17, 2024

Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Cell Biology

Background:

  • Traumatic dental injuries can cause irreversible damage to dental pulp cells.
  • Effective therapies are needed to protect and regenerate dental pulp cells.
  • Polyamidoamine (PAMAM) dendrimers offer potential as drug delivery vehicles and regenerative agents.

Purpose of the Study:

  • To investigate the potential of generation 5 PAMAM dendrimers (G5) functionalized with RGD peptides to bind dental pulp cells (DPCs) and modulate their differentiation.
  • To assess the impact of G5-FL-RGD treatment on the odontogenic potential of DPCs.

Main Methods:

  • Dental pulp cells and mouse odontoblast-like cells (MDPC-23) were treated with G5-FL-RGD.
  • Analysis was performed using Western blot, RT-PCR, and quantitative PCR.
  • Mineralization was assessed using the Von Kossa assay.

Main Results:

  • G5-FL-RGD treatment significantly increased the transcription of dental differentiation markers: DMP-1, DSPP, and MEPE.
  • Vascular endothelial growth factor (VEGF) expression was upregulated via the JNK pathway.
  • Long-term treatment led to enhanced mineralization of DPCs.

Conclusions:

  • PAMAM dendrimers conjugated to cyclic RGD peptides can effectively bind to and modulate DPCs.
  • This conjugation enhances the odontogenic potential of DPCs, suggesting a promising therapeutic strategy for dental pulp regeneration.
  • The JNK pathway plays a role in the differentiation process induced by G5-RGD.