A non-viral gene delivery system designed for clinical use

Area of Science:

• Biotechnology
• Molecular Biology
• Cell Biology

Background:

• Non-viral gene delivery methods are gaining attention as alternatives to viral vectors.
• Electroporation is an ex vivo technique that uses electric fields to enhance cell membrane permeability for gene delivery.
• Existing electroporation systems often have limitations in volume processing and system containment.

Purpose of the Study:

• To evaluate the MaxCyte system for ex vivo gene delivery via electroporation.
• To assess the system's capacity for processing various volumes and plasmid sizes.
• To determine the suitability of the MaxCyte system for clinical and bioprocessing applications.

Main Methods:

• Utilized the MaxCyte continuous flow electroporation system for cell transfection.
• Processed volumes ranging from 0.02 mL to over 1 L with plasmids up to 14 kB.
• Applied pre- and post-processing cell manipulations to optimize outcomes.
• Designed electrodes and chambers for safety, sterility, and closed-system operation.

Main Results:

• Achieved satisfactory gene loading efficiencies and cell viability.
• Demonstrated successful delivery of multiple plasmids for co-expression of gene products.
• Validated the system's capability for rapid processing of large cell volumes.
• Confirmed suitability for integration into current good manufacturing practice (cGMP) environments.

Conclusions:

• The MaxCyte system provides an effective and scalable solution for ex vivo electroporation-based gene delivery.
• Its closed-system design and cGMP compatibility make it suitable for clinical therapeutic and bioprocessing applications.
• This technology offers a safe, non-viral method for introducing genetic material into cells.