Photovoltaic surfaces enable clonal myoblastic cell release using visible light as external stimulation

Area of Science:

• Biomedical Engineering
• Cell Biology
• Materials Science

Background:

• Biomedical therapies often require cell transplantation to damaged organs.
• Current methods for cell collection, like enzymatic digestion, have limitations, including enzyme removal needs and incompatibility with certain cell structures.
• Alternative, non-enzymatic cell release methods are needed for advanced cell therapies.

Purpose of the Study:

• To investigate the release of cultured cells from silicon-based Photovoltaic (PV) surfaces using light as an external stimulus.
• To quantify the effectiveness of light exposure in releasing cells compared to traditional enzymatic methods.

Main Methods:

• Culturing C2C12 myoblasts on the negative surface of a PV device.
• Exposing confluent cell cultures to controlled light (25,000 lux) for one hour.
• Quantifying the number of released cells post-light exposure.

Main Results:

• Light exposure at 25,000 lux for one hour achieved cell release comparable to trypsinization.
• The cells released by light were viable and capable of re-culturing.
• Demonstrated a novel, non-enzymatic method for cell detachment.

Conclusions:

• Light stimulation of PV surfaces provides an effective and non-enzymatic method for releasing cultured cells.
• This light-based approach is a promising alternative for cell harvesting in cell therapy, especially for delicate cell structures like sheets.
• Viable cell recovery without enzymatic agents opens new possibilities for regenerative medicine and tissue engineering.