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Structural and functional alterations of FLT3 in acute myeloid leukemia Meshinchi S; Appelbaum FRClin Cancer Res 2009[Jul]; 15 (13): 4263-9Hematopoiesis is highly regulated through cytokine-induced stimulation of multiple signal transduction pathways in order to mediate appropriate differentiation and proliferation of specific progenitor populations. Ligand-induced stimulation of the FMS-like tyrosine kinase 3 (FLT3) leads to activation of multiple downstream effector pathways resulting in differentiation and proliferation of specific progenitor cell populations. Genomic alterations of the FLT3 gene, including FLT3 internal tandem duplication (FLT3/ITD) and FLT3 activation loop mutation (FLT3/ALM) lead to autonomous receptor activation, dysregulation of FLT3 signal transduction pathways, contribute to myeloid pathogenesis, and have been linked to response to therapy and clinical outcome. Exploring the mechanisms by which these FLT3 alterations lead to dysregulated proliferation should provide a better understanding of the molecular pathogenesis of acute myeloid leukemia (AML) and may provide insights into potential therapeutic interventions. FLT3 inhibitors are under evaluation for their efficacy in AML patients with FLT3 mutations.|Gene Duplication[MESH]|Hematopoiesis/genetics[MESH]|Humans[MESH]|Leukemia, Myeloid, Acute/diagnosis/*genetics/therapy[MESH]|Models, Biological[MESH]|Mutation/*physiology[MESH]|Prognosis[MESH]|Protein Structure, Tertiary/genetics/physiology[MESH]|Structure-Activity Relationship[MESH]|fms-Like Tyrosine Kinase 3/chemistry/*genetics/*physiology[MESH] |
