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Author Spotlight: Advancing Tissue Regeneration and Disease Modeling with Dental Pulp Stem Cells
Published on: May 5, 2023
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Fluorapatite-modified scaffold on dental pulp stem cell mineralization
1Department of Cariology, Restorative Sciences and Endodontics, Dental School, University of Michigan, Ann Arbor, MI, USA Department of Stomatology, Nanjing Jinling Hospital, Nanjing, Jiangsu, China.
Journal of Dental Research
|August 21, 2014
Summary
Fluorapatite (FA) crystals on polycaprolactone (PCL) scaffolds stimulate human dental pulp stem cell (DPSC) differentiation and mineralization in 3D culture. This FA-modified PCL scaffold shows potential for regenerative medicine applications.
Area of Science:
- Biomaterials Science
- Stem Cell Biology
- Tissue Engineering
Background:
- Fluorapatite (FA) crystals promote human dental pulp stem cell (DPSC) differentiation and mineralization in 2D cultures.
- The efficacy of FA in 3D cell culture environments remains largely unexplored.
Purpose of the Study:
- To investigate the behavior of DPSCs cultured on electrospun polycaprolactone (PCL) nanofibers with or without FA crystals in a 3D setting.
- To evaluate the potential of FA-modified PCL scaffolds for bone and dental regenerative applications.
Main Methods:
- FA crystals were synthesized onto electrospun PCL nanofiber scaffolds.
- DPSCs were cultured on PCL+FA and PCL-only scaffolds for up to 28 days.
- Cell attachment, proliferation, gene expression (pro-osteogenic markers), alkaline phosphatase activity, and mineralization were assessed.
Main Results:
- DPSCs formed multicellular aggregates on PCL+FA scaffolds, with slower proliferation initially but enhanced osteogenic marker expression from day 7.
- Increased alkaline phosphatase activity and significant mineralization (Alizarin red, Von Kossa staining) were observed on PCL+FA scaffolds.
- Osteocalcin expression was induced and enhanced in DPSCs cultured on PCL+FA scaffolds.
Conclusions:
- Incorporating FA crystals into 3D PCL nanofiber scaffolds creates a favorable microenvironment for DPSC growth, differentiation, and mineralization.
- FA-modified PCL scaffolds demonstrate significant potential for bone, dental, and orthopedic regenerative applications.
