Cryopreservation of hybridomas

Area of Science:

• Cell Biology
• Immunology
• Cryobiology

Background:

• Hybridomas are crucial for monoclonal antibody production but face numerous threats including contamination, genetic instability, and overgrowth.
• Effective cryopreservation is essential for long-term storage and viability of hybridoma cell lines.
• Standard cryopreservation protocols for eukaryotic cells often involve programmable freezers, which may not be readily available.

Purpose of the Study:

• To evaluate a simplified cryopreservation method for hybridoma cells.
• To determine the long-term viability of hybridoma cells stored using the simplified method.

Main Methods:

• Hybridoma cells were subjected to a two-step freezing process: incubation at -20°C for 2 hours, followed by overnight incubation at -70°C.
• After the initial freezing steps, vials were transferred to liquid nitrogen (-196°C) for long-term storage.

Main Results:

• Hybridoma cells successfully survived the simplified freezing procedure.
• Cells preserved using this method demonstrated viability for over five years.
• This method bypasses the need for specialized programmable freezing devices.

Conclusions:

• A simplified, accessible cryopreservation technique effectively preserves hybridoma cell lines.
• This method offers a practical alternative for researchers lacking advanced cryopreservation equipment.
• Prompt cryopreservation using this approach ensures the long-term availability of valuable hybridoma resources.