Thermal Assisted In Vivo Gene Electrotransfer

Area of Science:

• Biotechnology
• Molecular Biology
• Medical Engineering

Background:

• Gene electrotransfer uses electric pulses for plasmid DNA delivery.
• High voltages can cause discomfort and tissue damage.
• Reducing voltage while maintaining gene expression is a key goal.

Purpose of the Study:

• To evaluate the in vivo efficacy of combining gene electrotransfer with externally applied heat.
• To assess if heat application allows for reduced electrical parameters during gene delivery.
• To test a novel electrode device with an integrated laser for heat application.

Main Methods:

• In vivo study utilizing a novel electrode device with an integrated laser for localized heating.
• Gene electrotransfer performed with and without pre-pulsing heat application.
• Comparison of gene expression levels and electrical parameters between groups.

Main Results:

• Increased temperature during electrotransfer enhanced gene expression.
• Alternatively, maintained expression levels were achieved with reduced applied voltage when heat was applied.
• The novel device facilitated controlled heat application during the procedure.

Conclusions:

• Combining localized heating with gene electrotransfer in vivo enhances gene delivery efficiency.
• This combined approach permits a reduction in applied voltage, improving safety and patient tolerance.
• The findings support the development of a novel method and instrument for improved clinical translation of gene electrotransfer.