Periapical lesion-derived decellularized extracellular matrix as a potential solution for regenerative endodontics

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Dental Research

Background:

• Pulp regeneration is vital for preserving natural teeth.
• Decellularized extracellular matrix (dECM) mimics the natural tissue environment for regeneration.
• Periapical lesions (PL) are a source for potential regenerative materials.

Purpose of the Study:

• To isolate and characterize decellularized extracellular matrix from periapical lesions (PL-dECM).
• To evaluate the bioactive effects of PL-dECM on periapical lesion-derived stem cells (PLDSCs).
• To assess PL-dECM as a scaffold for pulp tissue engineering in regenerative endodontics.

Main Methods:

• Decellularization of periapical lesion tissue to obtain PL-dECM.
• Proteomic analysis to identify ECM components and bioactive factors.
• In vitro studies using PL-dECM conditioned medium and scaffolds with PLDSCs.
• In vivo evaluation of PL-dECM for pulp regeneration and stem cell differentiation.

Main Results:

• Successful isolation of translucent, viscous PL-dECM meeting decellularization standards.
• Proteomic analysis confirmed retention of essential ECM components and bioactive factors.
• PL-dECM enhanced PLDSC proliferation, migration, odontogenic, and angiogenic abilities in vitro and in vivo.
• PL-dECM demonstrated sustained support for PLDSCs and promoted differentiation.

Conclusions:

• PL-dECM serves as an effective scaffold for pulp tissue engineering.
• PL-dECM promotes PLDSC differentiation, offering insights for regenerative endodontics.
• These findings support the clinical application of in situ PL-dECM transplantation for dental regeneration.