Development of an attached strain from a continuous insect cell line

Area of Science:

• Entomology
• Cell Biology
• Insect Pathology

Background:

• The spruce budworm (Choristoneura fumiferana) is a significant forest pest.
• Continuous cell lines are vital tools for studying insect physiology and pathology.
• Developing specialized cell strains can improve research efficiency.

Purpose of the Study:

• To develop a continuous attached cell strain from the IPRI-CF-124 line of Choristoneura fumiferana.
• To enhance cell attachment properties for improved cell culture.
• To characterize the stability and growth of the new cell strain.

Main Methods:

• Selection and subculturing of strongly attached cells.
• Discarding suspended cells at each passage.
• Rinsing attached cells with 0.05% trypsin.
• Storage of cells in liquid nitrogen to assess stability.

Main Results:

• A new attached cell strain, IPRI-CF-124T, was successfully developed.
• The proportion of attached cells increased from 6% to 97% within 20 passages.
• Attachment and growth properties remained stable after liquid nitrogen storage.
• The population doubling time of the new strain is comparable to the parent line.

Conclusions:

• The developed IPRI-CF-124T cell strain offers improved attachment characteristics.
• This specialized cell line is stable and suitable for long-term use.
• The new strain is a valuable resource for Choristoneura fumiferana research.