| First Author | Zingone A | Year | 2010 |
| Journal | Leukemia | Volume | 24 |
| Issue | 6 | Pages | 1171-8 |
| PubMed ID | 20393505 | Mgi Jnum | J:160845 |
| Mgi Id | MGI:4455249 | Doi | 10.1038/leu.2010.50 |
| Citation | Zingone A, et al. (2010) Ectopic expression of wild-type FGFR3 cooperates with MYC to accelerate development of B-cell lineage neoplasms. Leukemia 24(6):1171-8 |
| abstractText | The t(4;14) translocation in multiple myeloma (MM) simultaneously dysregulates two apparent oncogenes: fibroblast growth factor receptor 3 (FGFR3) controlled by the 3' immunoglobulin heavy chain enhancer on der(14) and MMSET controlled by the intronic Emu enhancer on der(4). Although all MM tumors and cell lines with a t(4;14) translocation have dysregulated MMSET, about 25% do not express FGFR3. Therefore, the function of dysregulated wild-type (WT) FGFR3 in the pathogenesis of MM remains unclear. We developed a murine transgenic (TG) model in which WT FGFR3 is overexpressed in B lymphoid cells. Although high levels of FGFR3 resulted in lymphoid hyperplasia in about one-third of older mice, no increase in tumorigenesis was observed. However, double TG FGFR3/Myc mice develop mature B lymphoma tumors that occur with a higher penetrance and shorter latency than in single TG Myc mice (P=0.006). We conclude that expression of high levels of WT FGFR3 can be oncogenic and cooperate with MYC to generate B lymphoid tumors. This suggests that dysregulated FGFR3 expression is likely to be essential at least for the early stages of pathogenesis of MM tumors that have a t(4;14) translocation. |
