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High-throughput ClonePix FL analysis of mAb-expressing clones using the UCOE expression system.
Jeff Jia Cheng Hou1, Ben S Hughes1, Matthew Smede1
1The University of Queensland, Australian Institute for Bioengineering and Nanotechnology, Brisbane, QLD 4072, Australia.
New Biotechnology
|February 13, 2014
Summary
This study introduces a rapid cell line development method for monoclonal antibody production using ubiquitous chromatin opening elements (UCOE™) and robotic selection. This approach significantly accelerates the isolation of high-expressing Chinese hamster ovary cell clones.
Area of Science:
- Biotechnology
- Cell Line Development
- Protein Expression
Background:
- Mammalian cell clones are crucial for producing therapeutic monoclonal antibodies (mAbs).
- Current methods rely on stringent selection and gene amplification, leading to instability and long development times.
- Ubiquitous chromatin opening elements (UCOE™) can enhance gene expression and productivity in mammalian vectors.
Purpose of the Study:
- To develop a rapid and streamlined cell line development process for mAb production.
- To isolate high-expressing, stable clones using UCOE™-containing vectors and high-throughput robotic selection.
- To efficiently screen process-critical parameters for optimizing mAb production.
Main Methods:
- Utilized UCOE™-containing expression vectors in Chinese hamster ovary (CHO) cells.
- Employed high-throughput robotic clone selection for rapid isolation of stable clones.
- Integrated UCOE™ technology with automated selection for accelerated cell line development.
Main Results:
- Achieved stable clone isolation in just 4 weeks from transfection.
- Attained specific productivities exceeding 20 pg/cell/day.
- Successfully screened critical process parameters like IgG subtype and enhancer-promoter combinations.
Conclusions:
- UCOE™-containing vectors combined with automated robotic selection offer a fast method for developing stable, high-expressing cell lines.
- This streamlined approach reduces development timelines for mAb manufacturing.
- The UCOE™ technology facilitates high-level gene expression, overcoming integration site variability.
