First Author | Shreeram S | Year | 2006 |
Journal | J Exp Med | Volume | 203 |
Issue | 13 | Pages | 2793-9 |
PubMed ID | 17158963 | Mgi Jnum | J:120284 |
Mgi Id | MGI:3706213 | Doi | 10.1084/jem.20061563 |
Citation | Shreeram S, et al. (2006) Regulation of ATM/p53-dependent suppression of myc-induced lymphomas by Wip1 phosphatase. J Exp Med 203(13):2793-9 |
abstractText | 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 Emicro-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. |