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Heparin-Functionalized Bioactive Glass to Harvest Endogenous Growth Factors for Pulp Regeneration
Jilin Wu1,2, Jingyi Li1,2, Sicong Mao3,2
1Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, Beijing 100081, China.
ACS Applied Materials & Interfaces
|June 4, 2024
Summary
Researchers developed a novel heparin-functionalized bioactive glass (PSC-Heparin) that harnesses endogenous growth factors (GFs) for pulp regeneration, avoiding the need for exogenous GFs and promoting dentin complex formation.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Endodontics
Background:
- Pulp and periapical diseases impede tooth development, compromising structure and function.
- Current pulp regeneration strategies are limited, and exogenous growth factors (GFs) have drawbacks like short half-lives and side effects.
- There is a critical need for effective pulp regeneration methods, particularly for clinical applications.
Purpose of the Study:
- To develop a heparin-functionalized bioactive glass (PSC-Heparin) for enhanced pulp regeneration.
- To investigate PSC-Heparin's ability to harvest and release endogenous GFs.
- To evaluate PSC-Heparin's efficacy in promoting stem cell activity and pulp-dentin complex formation in vivo.
Main Methods:
- Synthesis and characterization of PSC-Heparin using techniques like FTIR, XPS, TGA, SEM, and XRD.
- Assessment of hydroxyapatite formation on PSC-Heparin.
- Evaluation of endogenous GF harvesting and release kinetics (ELISA).
- In vitro cytological studies on stem cells from apical papillae (adhesion, migration, proliferation, differentiation).
- In vivo histological analysis of subcutaneous implantation in nude mice.
Main Results:
- Successful synthesis and characterization of PSC-Heparin, demonstrating rapid hydroxyapatite formation.
- PSC-Heparin effectively harvested and sustainably released endogenous GFs.
- PSC-Heparin promoted stem cell adhesion, migration, proliferation, and odontogenic differentiation.
- In vivo studies showed PSC-Heparin induced odontoblast-like layers and pulp-dentin complex formation without exogenous GFs.
Conclusions:
- Heparin-functionalized bioactive glass (PSC-Heparin) is a promising biomaterial for pulp regeneration.
- This strategy effectively utilizes endogenous GFs, overcoming limitations of exogenous GFs.
- PSC-Heparin offers a novel approach for regenerative endodontic therapy, potentially leading to new clinical applications.
