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Highly synchronous culture of fibroblasts from G2 block caused by staurosporine, a potent inhibitor of protein kinases
- Source :
- Experimental Cell Research. 192:122-127
- Publication Year :
- 1991
- Publisher :
- Elsevier BV, 1991.
-
Abstract
- The effect of staurosporine, a potent microbial inhibitor of protein kinases, on the cell cycle of cultured fibroblast cells was investigated. A low concentration of staurosporine (1–10 ng/ml) blocked the cell cycle of rat 3Y1 fibroblasts at the early G1 phase within 2 h after serum stimulation. On the other hand, a higher concentration of the drug (100 ng/ml) caused the specific G2 block. Both of these blocks were reversible. After release from the G2 block, highly synchronous transition to M phase was observed and both nuclear and cell divisions were completed within 180 min. This reversible G2 block showed a clear contrast to those by the other G2 arresters, trichostatin A and leptomycin B, which formed proliferative tetraploid cells after release by entering the cells into a new S phase without passage through M phase. The presence of trichostatin A or leptomycin B did not interfere with this synchronous progression through G2 M phases, suggesting that the arrest point of staurosporine was present in late G2 phase following those of trichostatin A and leptomycin B.
- Subjects :
- G2 Phase
Biology
S Phase
chemistry.chemical_compound
Alkaloids
medicine
Animals
Staurosporine
Fibroblast
Cells, Cultured
Protein Kinase C
Kinase
Cell Cycle
G1 Phase
Cell Biology
Leptomycin
Fibroblasts
Cell cycle
Molecular biology
Rats
Synchronous culture
Trichostatin A
medicine.anatomical_structure
Biochemistry
chemistry
Cell culture
Cell Division
medicine.drug
Subjects
Details
- ISSN :
- 00144827
- Volume :
- 192
- Database :
- OpenAIRE
- Journal :
- Experimental Cell Research
- Accession number :
- edsair.doi.dedup.....fe69c4e0f057aadc9bd6e3860a691612