MYELOID NEOPLASIA TNF facilitates clonal expansion of JAK2V617F positive cells in myeloproliferative neoplasms
نویسندگان
چکیده
1Division of Hematology and Medical Oncology, Oregon Health & Science University (OHSU) Knight Cancer Institute, Portland, OR; 2Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria; 3Division of Pediatric Hematology and Oncology, Department of Pediatrics, OHSU, Portland, OR; 4Department of Pathology, OSHU, Portland, OR; 5Center for Clinical Research, University of Freiburg, Freiburg, Germany; 6Weill Cornell Medical College, New York, NY; 7Division of Hematology and Hematologic Malignancies, University of Utah, Salt Lake City, UT; 8Howard Hughes Medical Institute, Portland, OR; and 9NW Cancer Research Center, Portland, OR
منابع مشابه
MYELOID NEOPLASIA Endothelial progenitor cells are clonal and exhibit the JAK2V617F mutation in a subset of thrombotic patients with Ph-negative myeloproliferative neoplasms
In this study we investigated whether neoplastic transformation occurring in Philadelphia (Ph)–negative myeloproliferative neoplasms (MPNs) could involve also the endothelial cell compartment. We evaluated the level of endothelial colony-forming cells (E-CFCs) in 42 patients (15 with polycythemia vera, 12 with essential thrombocythemia, and 15 with primary myelofibrosis). All patients had 1 mol...
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MPNs including a heterogeneous group of clonal or oligoclonal hamtopathies characterized by proliferation and accumulation of mature myeloid cells. JAK2 tyrosine kinase mutation is the most common molecular lesion identified in 90% of cases. JAK2 is involved in EPO signaling pathway, and mutations in it lead to EPO-independent spontaneous phosphorylation. Most tyrosine kinase inhibitors (TKI) a...
متن کاملTNFα facilitates clonal expansion of JAK2V617F positive cells in myeloproliferative neoplasms.
Proinflammatory cytokines such as TNFα are elevated in patients with myeloproliferative neoplasms (MPN), but their contribution to disease pathogenesis is unknown. Here we reveal a central role for TNFα in promoting clonal dominance of JAK2(V617F) expressing cells in MPN. We show that JAK2(V617F) kinase regulates TNFα expression in cell lines and primary MPN cells and TNFα expression is correla...
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Genetic instability is strongly involved in cancer development and progression, and elucidating the mechanism could lead to novel therapeutics for preventing carcinogenesis. Philadelphia-negative myeloproliferative neoplasms (MPNs) are clonal myeloid disorders with a high prevalence of JAK2V617F mutation, and transformation to acute myeloid leukemia through accumulation of additional mutations ...
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