Optimisation and evaluation of a high-throughput mammalian protein expression system

Area of Science:

• Biotechnology
• Molecular Biology
• Cell Biology

Background:

• Transient transfection with episomal vectors is a key method for high-level recombinant protein production in mammalian cells.
• This approach avoids the extensive time and effort required for generating stable cell lines.
• HEK293-EBNA cells are a widely used and robust system for transient gene expression.

Purpose of the Study:

• To optimize and evaluate a high-throughput transient expression system for recombinant protein production.
• To enable the simultaneous expression and purification of multiple constructs.
• To facilitate parallel screening of various constructs, vectors, and expression conditions.

Main Methods:

• Development of a high-throughput transient expression workflow in HEK293-EBNA cells.
• Simultaneous expression of 10 constructs in deep-well plates.
• Purification of recombinant proteins using 96-well plate affinity chromatography.

Main Results:

• Successful implementation of a high-throughput transient expression system.
• Demonstrated ability to express and purify multiple constructs in parallel.
• Enabled efficient screening of diverse expression parameters.

Conclusions:

• The optimized high-throughput transient expression system significantly accelerates recombinant protein production.
• This method offers a powerful tool for researchers needing to express and screen multiple protein variants efficiently.
• The system reduces the time and resources needed compared to traditional stable cell line development.