Cells isolated from human periapical cysts express mesenchymal stem cell-like properties

Area of Science:

• Dental research
• Stem cell biology
• Regenerative medicine

Background:

• Mesenchymal stem cells (MSCs) are crucial for tissue repair and regeneration.
• Identifying novel sources of MSCs is vital for advancing therapeutic applications.
• Periapical cysts, often associated with chronic inflammation, have not been previously explored as an MSC source.

Purpose of the Study:

• To isolate and characterize mesenchymal stem cells from human periapical cysts (hPCy-MSCs).
• To evaluate the immunophenotype, proliferative potential, and multi-differentiation capacity of these cells.
• To establish human periapical cysts as a potential source of MSCs.

Main Methods:

• Isolation and culture of cells from human periapical cysts.
• Characterization of cell morphology and adherence properties.
• Immunophenotypic analysis using flow cytometry and immunofluorescence (CD73+, CD90+, CD105+, CD13+, CD29+, CD44+, CD45-, STRO-1+, CD146+).
• Assessment of differentiation potential into osteoblast- and adipocyte-like cells using specific staining and qRT-PCR.

Main Results:

• Cells isolated from human periapical cysts exhibited MSC-like characteristics, termed hPCy-MSCs.
• hPCy-MSCs demonstrated fibroblast-like morphology, adherence to plastic, high proliferative potential, and self-renewal capacity.
• Immunophenotypic analysis confirmed MSC markers (CD73+, CD90+, CD105+, etc.) and absence of hematopoietic markers (CD45-).
• hPCy-MSCs successfully differentiated into osteoblast- and adipocyte-like lineages in vitro, confirmed by specific markers.

Conclusions:

• Human periapical cysts harbor cells with robust mesenchymal stem cell properties.
• These findings identify hPCy-MSCs as a novel and promising source for stem cell research and regenerative therapies.
• Periapical cysts represent an accessible and potentially rich source of MSCs.