Circ_015350 Mediates Odonto/osteogenic Differentiation in Different Stem Cells.

Area of Science:

• Stem cell biology
• Molecular biology
• Regenerative medicine

Background:

• Bone marrow stem cells (BMSCs), dental pulp stem cells (DPSCs), and periodontal ligament stem cells (PDLSCs) are crucial for regenerative endodontic therapy.
• These stem cell types exhibit comparable mineralization potential during induction.

Purpose of the Study:

• To compare the odontogenic and osteogenic potential of mouse-derived BMSCs, DPSCs, and PDLSCs.
• To identify shared or related circular RNA-mediated regulatory mechanisms influencing their differentiation.

Main Methods:

• Comparative analysis of osteogenic and odontogenic marker expression (ALP, RUNX2, OCN, DSPP, DMP-1).
• Bioinformatics analysis to predict circ_015350 interactions and pathway involvement.
• Experimental validation of circ_015350's role via knockdown and overexpression studies.

Main Results:

• BMSCs and PDLSCs showed high osteogenic marker expression, while DPSCs exhibited significant odontoblastic marker upregulation.
• Circ_015350 was consistently upregulated during mineralization and promoted both odontogenic and osteogenic differentiation across all cell types.
• Knockdown of circ_015350 reduced specific differentiation markers, while overexpression enhanced them, particularly DMP-1 and DSPP in DPSCs.

Conclusions:

• BMSCs possess greater osteogenic capacity, and DPSCs show stronger odontogenic potential.
• Circ_015350 acts as a key regulator promoting both differentiation types, with a pronounced effect on odontogenesis.
• Circ_015350 is a potential therapeutic target for dental tissue regeneration, warranting further mechanistic investigation.