First Author | Liao X | Year | 1995 |
Journal | J Virol | Volume | 69 |
Issue | 11 | Pages | 7132-7 |
PubMed ID | 7474133 | Mgi Jnum | J:29242 |
Mgi Id | MGI:76773 | Doi | 10.1128/jvi.69.11.7132-7137.1995 |
Citation | Liao X, et al. (1995) Evi-5, a common site of retroviral integration in AKXD T-cell lymphomas, maps near Gfi-1 on mouse chromosome 5. J Virol 69(11):7132-7 |
abstractText | We have identified a novel common site of retroviral integration, Evi-5, in AKXD T-cell lymphomas. All proviruses located at Evi-5 are clustered within a 7-kb genomic region and, where determined, are oriented in the same transcriptional direction. Interspecific backcross analysis localized Evi-5 to mouse chromosome 5, where it cosegregated with another common viral integration site, Gfi-1. Gfi-1 encodes a novel zinc finger transcription factor whose expression is thought to be important for interleukin-2 signaling. Physical mapping studies showed that Evi-5 is located approximately 18 kb upstream of Gfi-1, and Southern analysis showed that Gfi-1, like Evi-5, is a common integration site in AKXD T-cell tumors. With one exception, Evi-5 and Gfi-1 integrations were mutually exclusive. Ten of the tumors with Evi-5 or Gfi-1 integrations also harbored viral integrations at other common integration sites causally associated with T-cell disease. These results are consistent with the hypothesis that T-cell lymphomagenesis is a multistep disease and that viral integration at Evi-5 or Gfi-1 is causally associated with this disease process. |