| Field | Specification |
|---|---|
| Mfr No | |
| Species |
C-33 A cells originate from the cervical tissue of a 66-year-old Caucasian female diagnosed with uterine cancer. This cell line is characterized by a unique genetic alteration in the TP53 gene, where a point mutation at codon 273 results in an arginine to cysteine substitution, leading to elevated expression of the p53 protein. This mutation plays a critical role in the pathophysiology of the cells, influencing their growth properties and tumorigenic potential.
Notably, C-33 A cells are confirmed to be tumorigenic. When introduced into immunodeficient nude mice, these cells have the capability to form undifferentiated carcinomas, which highlights their utility in cancer research, particularly in studies aimed at understanding the mechanisms of tumor initiation and progression in cervical cancer. Furthermore, these cells are negative for both DNA and RNA of human papillomavirus (HPV), distinguishing them from many other cervical cancer cell lines which often carry HPV integrations. This aspect makes C-33 A cells particularly valuable for studying cervical cancer that develops independently of HPV infection, offering insights into alternative pathways of carcinogenesis.
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- Protein expression: Oncogenes: P53＋, Prb＋
- Tumorigenic: Yes
- cultureMedium: EMEM (MEM Eagle), w: 2 mM L-Glutamine, w: 2.2 g/L NaHCO3, w: EBSS (Cytion article number 820100a)
- supplements: Supplement the medium with 10% FBS and 1% NEAA
- dissociationReagent: Accutase
- subculturing: Remove the old medium from the adherent cells and wash them with PBS that lacks calcium and magnesium. For T25 flasks, use 3-5 ml of PBS, and for T75 flasks, use 5-10 ml. Then, cover the cells completely with Accutase, using 1-2 ml for T25 flasks and 2.5 ml for T75 flasks. Let the cells incubate at room temperature for 8-10 minutes to detach them. After incubation, gently mix the cells with 10 ml of medium to resuspend them, then centrifuge at 300xg for 3 minutes. Discard the supernatant, resuspend the cells in fresh medium, and transfer them into new flasks that already contain fresh medium.
- fluidRenewal: 2 to 3 times per week
- freezeMedium: As a cryopreservation medium, use complete growth medium (including FBS) + 10% DMSO for adequate post-thaw viability, or CM-1 (Cytion catalog number 800100), which includes optimized osmoprotectants and metabolic stabilizers to enhance recovery and reduce cryo-induced stress.
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