| Karyotype |
hypotetraploid; 84, XXY; -Y, t(Xp;8q), del(1)(p22), -3, del(4)(p14), -9, -10, -13, -14, -14, -16, -22 |
| Comments |
PFSK-1 cells form colonies in soft agar, and lack contact inhibition.
They express the intermediate filament protein, nestin, and are positive for neuron specific enolase (NSE).
They lack characterisics of terminally differentiated neurons or glia.
Restriction fragment length polymorphism studies showed loss of heterozygosity for multiple loci on chromosome 17.
Neither c-myc nor N-myc is amplified or re-arranged. |
| Subculturing |
Volumes used in this protocol are for 75 cm2 flasks; proportionally reduce or increase amount of dissociation medium for culture vessels of other sizes.
- Remove and discard culture medium.
- Briefly rinse the cell layer with 0.25% (w/v) Trypsin-0.53mM EDTA solution to remove all traces of serum which contains trypsin inhibitor.
- Add 2.0 to 3.0 mL of Trypsin-EDTA solution to flask and observe cells under an inverted microscope until cell layer is dispersed (usually within 5 to 15 minutes).
Note: To avoid clumping do not agitate the cells by hitting or shaking the flask while waiting for the cells to detach. Cells that are difficult to detach may be placed at 37°C to facilitate dispersal.
- Add 6.0 to 8.0 mL of complete growth medium and aspirate cells by gently pipetting.
- Add appropriate aliquots of the cell suspension to new culture vessels.
- Incubate cultures at 37°C.
Subcultivation Ratio: A subcultivation ratio of 1:4 to 1:10 is recommended
Medium Renewal: 2 times per week
Note: For more information on enzymatic dissociation and subculturing of cell lines consult Chapter 13 in Culture Of Animal Cells: A Manual Of Basic Technique by R. Ian Freshney, 5th edition, published by Wiley-Liss, N.Y., 2005. |
| References |
Fults D, et al. Establishment and characterization of a human primitive neuroectodermal tumor cell line from the cerebral hemisphere. J. Neuropathol. Exp. Neurol. 51: 272-280, 1992. PubMed: 1316433
Cote GJ, et al. Sequence requirements for regulated RNA splicing of the human fibroblast growth factor receptor-1 alpha exon. J. Biol. Chem. 272: 1054-1060, 1997. PubMed: 8995402
Hay, R. J., Caputo, J. L., and Macy, M. L., Eds. (1992), ATCC Quality Control Methods for Cell Lines. 2nd edition, Published by ATCC.
Caputo, J. L., Biosafety procedures in cell culture. J. Tissue Culture Methods 11:223-227, 1988.
Fleming, D.O., Richardson, J. H., Tulis, J.J. and Vesley, D., (1995) Laboratory Safety: Principles and Practice. Second edition, ASM press, Washington, DC.
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