Generation of Monoclonal Chinese Hamster Ovary Cell Lines Using DISPENCELL-S3

Area of Science:

• Biotechnology and Bioprocessing
• Cell Line Development
• Protein Manufacturing

Background:

• Single-cell isolation is essential for developing safe and consistent therapeutic protein manufacturing processes.
• Selection of rare, clonally derived cell lines with optimal growth and production is key to higher manufacturing performance.
• The DISPENCELL-S3 utilizes impedance spectroscopy for advanced single-cell dispensing.

Purpose of the Study:

• To provide a detailed protocol for generating Chinese hamster ovary (CHO) monoclonal cell lines using the DISPENCELL-S3.
• To optimize the DISPENCELL-S3 dispensing parameters for efficient single-cell isolation.
• To establish methods for assessing monoclonal outgrowth and confirming clonality via impedance spectroscopy.

Main Methods:

• Preparation and characterization of Chinese hamster ovary (CHO) cell samples for single-cell isolation.
• Optimization of DISPENCELL-S3 dispensing parameters, including cell concentration and dispensing settings.
• Assessment of monoclonal outgrowth and utilization of impedance spectroscopy data to verify clonality.

Main Results:

• A comprehensive protocol for generating monoclonal CHO cell lines with the DISPENCELL-S3 was successfully developed.
• Optimized dispensing parameters were identified, leading to efficient single-cell deposition.
• Impedance spectroscopy proved to be a reliable method for confirming clonality of the isolated single cells.

Conclusions:

• The DISPENCELL-S3 offers a robust technology for single-cell isolation in the development of monoclonal cell lines for therapeutic protein production.
• The detailed protocol and optimized parameters facilitate improved cell line development workflows.
• Impedance spectroscopy serves as a valuable tool for ensuring the clonality and quality of cell lines.