First Author | Yan M | Year | 2009 |
Journal | Blood | Volume | 113 |
Issue | 4 | Pages | 883-6 |
PubMed ID | 19036704 | Mgi Jnum | J:144726 |
Mgi Id | MGI:3831607 | Doi | 10.1182/blood-2008-04-153742 |
Citation | Yan M, et al. (2009) RUNX1/AML1 DNA-binding domain and ETO/MTG8 NHR2-dimerization domain are critical to AML1-ETO9a leukemogenesis. Blood 113(4):883-6 |
abstractText | The 8;21 translocation, which involves the gene encoding the RUNX family DNA-binding transcription factor AML1 (RUNX1) on chromosome 21 and the ETO (MTG8) gene on chromosome 8, generates AML1-ETO fusion proteins. Previous analyses have demonstrated that full-length AML1-ETO blocks AML1 function and requires additional mutagenic events to promote leukemia. More recently, we have identified an alternatively spliced form of AML1-ETO, AML1-ETO9a, from t(8;21) acute myeloid leukemia (AML) patient samples. AML1-ETO9a lacks the C-terminal NHR3 and NHR4 domains of AML1-ETO and is highly leukemogenic in the mouse model. Here, we report that the AML1 DNA-binding domain and the ETO NHR2-dimerization domain, but not the ETO NHR1 domain, are critical for the induction of AML by AML1-ETO9a. A region between NHR1 and NHR2 affects latency of leukemogenesis. These results provide valuable insight into further analysis of the molecular mechanism of t(8;21) in leukemogenesis. |