Journal
BLOOD
Volume 103, Issue 1, Pages 309-312Publisher
AMER SOC HEMATOLOGY
DOI: 10.1182/blood-2003-05-1690
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Constitutive activation of aberrant fibroblast growth factor receptor 1.(FGFR1) kinase as a consequence of gene fusion such as FOP-FGFR1 associated with t(6; 8)(q27;p11-12) translocation, is the hallmark of an atypical aggressive stem cell myeloproliferative disorder (MPD) in humans. In this study, we show that expression of FOP-FGFR1 in primary bone marrow cells induced by retroviral transduction generates a MPD In mice. Constitutive FOP-FGFR1 kinase activity was both essential and sufficient to cause a chronic myeloproliferative syndrome in the murine bone marrow transplantation model. In contrast to the human disorder, lymphoproliferation and progression to acute phase were not observed. Lymphoid symptoms, however, appeared when onset of the disease was delayed as the result of mutation of FOP-FGFR1 at tyrosine 511, the phospholipase C gamma (PLCgamma) binding site.
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