CHO/dhFr-AC-free cell line
5011002, hamster ovary, Suspension
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About This Item
Kod UNSPSC:
41106514
Polecane produkty
product name
CHO/dhFr-AC-free cell line, 05011002
pochodzenie biologiczne
hamster ovary
tryb wzrostu
Aggregates in suspension
kariotyp
Not specified
morfologia
Suspension
produkty
Not specified
receptory
Not specified
metody
cell culture | mammalian: suitable
Warunki transportu
dry ice
temp. przechowywania
−196°C
Pochodzenie linii komórkowej
Hamster Chinese Ovary, serum-free
Opis linii komórkowej
This is a derviative of the CHO/dhFr- cell line, Sigma Catalogue number. 94060607 which has been adapted to grow in the animal component free medium CHO DHFR (Sigma C8862). 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.
pożywka hodowlana
CHO DHR medium (Sigma C8862) + 2mM Glutamine + 100uM Hypoxanthine + 16uM Thymidine (e.g. use HT supplement Sigma H0137). Addition of Aminopterin (Sigma A5159) 0.4uM is also advised. When freezing cells use freeze medium composed of 50:50 fresh:conditioned medium + 10% DMSO.
Rutyna subkultury
Maintain cultures between approximately 3-9x105 cells/ml; 5% CO2; 37°C. Cells grow as aggregates in suspension. Viability may be poor on resuscitation and may initially decrease further. Full recovery may take up to 2 weeks.
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