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CHO/dhFr-

94060607, hamster ovary, Epithelial

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About This Item

UNSPSC Code:
41106514

product name

CHO/dhFr-, 94060607

biological source

hamster ovary

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

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

Additional freight & handling charges may be applicable for Asia-Pacific shipments. Please check with your local Customer Service representative for more information.

Certificates of Analysis (COA)

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