Regulation of ATM/p53-dependent suppression of myc-induced lymphomas by Wip1 phosphatase
Journal Article
·
· Journal of Experimental Medicine
- Institute of Molecular and Cell Biology (Singapore); DOE/OSTI
- Institute of Molecular and Cell Biology (Singapore)
- National Institutes of Health (NIH), Bethesda, MD (United States). National Cancer Institute (NCI)
- Harvard School of Public Health, Boston, MA (United States)
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
The ataxia telangiectasia mutated (ATM) kinase is a key tumor suppressor that regulates numerous cell cycle checkpoints as well as apoptosis. Here, we report that ATM is a critical player in the regulation of apoptosis and lymphomagenesis in the presence of c-myc. In turn, deletion of the inhibitory ATM phosphatase, Wip1, results in ATM up-regulation and suppression of Eμ-myc–induced B cell lymphomas. Using mouse genetic crosses, we show that the onset of myc-induced lymphomas is dramatically delayed in Wip1-null mice in an ATM- and p53-, but not p38 MAPK– or Arf-, dependent manner. We propose that Wip1 phosphatase is critical for regulating the ATM-mediated tumor surveillance network.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- Agency for Science, Technology and Research; National Institutes of Health (NIH); USDOE Office of Science (SC), Biological and Environmental Research (BER). Biological Systems Science Division
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 1625190
- Journal Information:
- Journal of Experimental Medicine, Journal Name: Journal of Experimental Medicine Journal Issue: 13 Vol. 203; ISSN 0022-1007
- Publisher:
- Rockefeller University PressCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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