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Sharp-1 modulates the cellular response to DNA damage
- Source :
-
FEBS Letters . Feb2010, Vol. 584 Issue 3, p619-624. 6p. - Publication Year :
- 2010
-
Abstract
- Abstract: DNA damage checkpoints are essential for maintenance of genome integrity. We report here that inducible overexpression of the transcription factor Sharp-1 results in an S and G2/M cell cycle arrest, concomitant with the upregulation of Brca1 and GADD45α expression. In addition, we show that endogenous Sharp-1 mRNA is increased by DNA-damaging agents. Consistently, Sharp-1 overexpressing cells exhibit reduced apoptosis in response to chemotherapeutic drugs along with lower p53 expression and activity. Our studies identify a novel function for Sharp-1 in cell cycle arrest and DNA damage-induced apoptosis. Inappropriate Sharp-1 expression may therefore be associated with tumorigenesis. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00145793
- Volume :
- 584
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- FEBS Letters
- Publication Type :
- Academic Journal
- Accession number :
- 47952049
- Full Text :
- https://doi.org/10.1016/j.febslet.2009.12.011