Polyamine depletion induces G1 and S phase arrest in human retinoblastoma Y79 cells
2008
Polyamine Depletion and Cell Cycle Arrest in Retinoblastoma Cells
publication
Evidence: moderate
Author Information
Author(s): Ueda Akiko, Araie Makoto, Kubota Shunichiro
Primary Institution: The University of Tokyo
Hypothesis
The study examines the effects of DFMO on the proliferation of pRb deficient human retinoblastoma Y79 cells.
Conclusion
DFMO treatment leads to G1 and S phase arrest in Y79 cells through p107 dephosphorylation and accumulation of the p107/E2F-4 complex.
Supporting Evidence
- DFMO suppressed the proliferation of Y79 cells, leading to G1 and S phase arrest.
- DFMO treatment increased p27/Kip1 protein expression and induced p107 dephosphorylation.
- The growth suppression by DFMO was restored by the addition of putrescine.
Takeaway
When a special chemical called DFMO is used, it stops certain cancer cells from growing by making them pause in their growth cycle.
Methodology
The study used cultured Y79 cells and analyzed the effects of DFMO through polyamine analysis, western blot, gel shift, FACS, and promoter analysis.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website