CHO/dhFr-

NOTE: Both the cell line and DNA from the cell line may be available for this product. Please choose -1VL or VIAL for cells, or -DNA-5UG for DNA, 94060607, hamster ovary, Epithelial

• UNSPSC Code: 41106514

Properties

• biological source: hamster ovary
• packaging: tube of 5 μg 94060607-DNA-5UG; pkg of vial of cells 94060607-1VL
• growth mode: Adherent
• karyotype: Modal no. 20
• morphology: Epithelial
• products: Not specified
• receptors: Not specified
• technique(s): cell culture | mammalian: suitable
• shipped in: dry ice
• storage temp.: −196°C

Description

Cell Line Origin

Hamster Chinese ovary

Cell Line Description

The CHO/dhFr- cell line lacks the enzyme dihydrofolate reductase (DHFR) which is necessary for purine synthesis. In the absence of exogenous purines, this enzyme is required for growth. Hence the CHO/dhFr- cell line has growth requirements for hypoxanthine (or adenine), glycine and thymidine. However, the cells will continue to grow without the addition of hypoxanthine and thymidine because the cells can obtain sufficient from the medium. α MEM minus does not contain the ribonucleosides or the deoxyribonucleosides, and will not support the growth of CHO/dhFr- or its serum free adaptation as neither contains the gene to produce DHFR. (See attached data sheet).

Application

CHO/dhFr- has been used to study the relation between local chromatin mobility and transcriptional activity. It has also been used as a transfection lineage and also as a negative control in cytofluorometry experiments.

Culture Medium

IDMEM + 2mM Glutamine + 0.1mM Hypoxanthine + 0.01mM Thymidine + 10% Foetal Bovine Serum (FBS).

Subculture Routine

Split sub-confluent cultures (70-80%) 1:4 to 1:6 i.e. seeding at 2-4x10,000 cells/cm² using 0.25% trypsin/EDTA; 5% CO₂; 37°C

Other Notes

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