[Preliminary study on human bone marrow mesenchymal stem cells differentiation into epithelial-like cells]

Area of Science:

• Stem cell biology
• Ophthalmology
• Tissue engineering

Background:

• Human bone marrow mesenchymal stem cells (hMSC) are multipotent stromal cells with significant differentiation potential.
• Corneal epithelial defects represent a major cause of visual impairment, necessitating innovative regenerative strategies.

Purpose of the Study:

• To investigate the differentiation capacity of hMSC into epithelial-like cells, specifically corneal epithelial-like cells.
• To explore the potential of hMSC as seed cells for corneal tissue engineering.

Main Methods:

• hMSC isolation, purification, and in vitro expansion.
• Flow cytometry for hMSC identification (CD44, CD29, CD105 positive; CD45, CD34 negative).
• In vitro culture on pig corneal Bowman's membrane and air-lifting cultivation for stratification; immunofluorescence and HE staining for analysis.

Main Results:

• hMSC demonstrated robust proliferation in vitro.
• Post-induction, hMSC expressed corneal epithelial markers CK12 and CK19.
• Air-lifting cultivation resulted in the formation of one to two layers of epithelial-like cells, resembling corneal epithelium.

Conclusions:

• hMSC possess the inherent potential to differentiate into epithelial cells, including corneal epithelial cells.
• hMSC are a viable cell source for reconstructing corneal epithelium through tissue engineering.