» Articles » PMID: 18208615

Polyamine Depletion Induces G1 and S Phase Arrest in Human Retinoblastoma Y79 Cells

Overview
Journal Cancer Cell Int
Publisher Biomed Central
Date 2008 Jan 23
PMID 18208615
Citations 4
Authors
Affiliations
Soon will be listed here.
Abstract

Background: Polyamines and ornithine decarboxylase (ODC) are essential for cell proliferation. DL-alpha-difluoromethylornithine (DFMO), a synthetic inhibitor of ODC, induces G1 arrest through dephosphorylation of retinoblastoma protein (pRb). The effect of DFMO on cell growth of pRb deficient cells is not known. We examined the effects of DFMO on pRb deficient human retinoblastoma Y79 cell proliferation and its molecular mechanism.

Methods: Using cultured Y79 cells, the effects of DFMO were studied by using polyamine analysis, western blot, gel shift, FACS and promoter analysis.

Results: DFMO suppressed the proliferation of Y79 cells, which accumulated in the G1 and S phase. DFMO induced p27/Kip1 protein expression, p107 dephosphorylation and accumulation of p107/E2F-4 complex in Y79 cells.

Conclusion: These results indicate that p107 dephosphorylation and accumulation of p107/E2F-4 complex is involved in G1 and S phase arrest of DFMO treated Y79 cells.

Citing Articles

Polyamines and Their Metabolism: From the Maintenance of Physiological Homeostasis to the Mediation of Disease.

Zahedi K, Barone S, Soleimani M Med Sci (Basel). 2022; 10(3).

PMID: 35893120 PMC: 9326668. DOI: 10.3390/medsci10030038.


Involvement of Antizyme Characterized from the Small Abalone Haliotis diversicolor in Gonadal Development.

Li W, Huang M, Lu W, Chen X, Shen M, Li X PLoS One. 2015; 10(8):e0135251.

PMID: 26313647 PMC: 4551804. DOI: 10.1371/journal.pone.0135251.


Combination treatment of TRAIL, DFMO and radiation for malignant glioma cells.

Alexiou G, Tsamis K, Vartholomatos E, Peponi E, Tzima E, Tasiou I J Neurooncol. 2015; 123(2):217-24.

PMID: 25935110 DOI: 10.1007/s11060-015-1799-9.


Cytotoxicity of 1,4-diamino-2-butanone, a putrescine analogue, to RKO cells: mechanism and redox imbalance.

Soares C, Boiani M, Marnett L, Bechara E Free Radic Res. 2013; 47(9):672-82.

PMID: 23758064 PMC: 6525713. DOI: 10.3109/10715762.2013.814126.

References
1.
Russell D . Ornithine decarboxylase as a biological and pharmacological tool. Pharmacology. 1980; 20(3):117-29. DOI: 10.1159/000137355. View

2.
Luo R, Postigo A, Dean D . Rb interacts with histone deacetylase to repress transcription. Cell. 1998; 92(4):463-73. DOI: 10.1016/s0092-8674(00)80940-x. View

3.
Sala A, De Luca A, Giordano A, Peschle C . The retinoblastoma family member p107 binds to B-MYB and suppresses its autoregulatory activity. J Biol Chem. 1996; 271(46):28738-40. DOI: 10.1074/jbc.271.46.28738. View

4.
Goodrich D, Wang N, Qian Y, Lee E, Lee W . The retinoblastoma gene product regulates progression through the G1 phase of the cell cycle. Cell. 1991; 67(2):293-302. DOI: 10.1016/0092-8674(91)90181-w. View

5.
Dekker M, van der Valk M, Carrozza M, Jeanny J, Dannenberg J, Berns A . p107 is a suppressor of retinoblastoma development in pRb-deficient mice. Genes Dev. 1998; 12(11):1599-609. PMC: 316874. DOI: 10.1101/gad.12.11.1599. View