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Article Abstract
Myelodysplasia/myeloid leukemia factor 1-interacting protein (MLF1IP) appears to be an erythroid lineage-specific gene in mice; however, its role in normal erythropoiesis and erythropoietic disorders have not yet been elucidated. Here, we found that MLF1IP is abundantly expressed in human erythroid progenitor cells and that MLF1IP-deficiency reduces cell proliferation resulting from cell cycle arrest. Moreover, MLF1IP expression is exclusively elevated in CFU-E cells from polycythemia vera (PV) patients, and MLF1IP transgenic mice develop a PV-like disorder. Further analyses revealed that the erythroid progenitors and early-stage erythroblasts from these transgenic mice expand by up-regulating cyclin D2 and down-regulating p27 and p21. Thus, our data demonstrate that MLF1IP promotes erythroid proliferation and is involved in the pathogenesis of PV, suggesting that it might be a novel molecular target for erythropoietic disorders.
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| http://dx.doi.org/10.1002/1873-3468.12587 | DOI Listing |
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