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- W2011049672 abstract "The WT1 tumor-suppressor gene is expressed by many forms of acute myeloid leukemia. Inhibition of this expression can lead to the differentiation and reduced growth of leukemia cells and cell lines, suggesting that WT1 participates in regulating the proliferation of leukemic cells. However, the role of WT1 in normal hematopoiesis is not well understood. To investigate this question, we have used murine cells in which the WT1 gene has been inactivated by homologous recombination. We have found that cells lacking WT1 show deficits in hematopoietic stem cell function. Embryonic stem cells lacking WT1, although contributing efficiently to other organ systems, make only a minimal contribution to the hematopoietic system in chimeras, indicating that hematopoietic stem cells lacking WT1 compete poorly with healthy stem cells. In addition, fetal liver cells lacking WT1 have an approximately 75% reduction in erythroid blast-forming unit (BFU-E), erythroid colony-forming unit (CFU-E), and colony-forming unit–granulocyte macrophage–erythroid–megakaryocyte (CFU-GEMM). However, transplantation of fetal liver hematopoietic cells lackingWT1 will repopulate the hematopoietic system of an irradiated adult recipient in the absence of competition. We conclude that the absence of WT1 in hematopoietic cells leads to functional defects in growth potential that may be of consequence to leukemic cells that have alterations in the expression of WT1." @default.
- W2011049672 created "2016-06-24" @default.
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- W2011049672 date "2003-04-01" @default.
- W2011049672 modified "2023-10-01" @default.
- W2011049672 title "Role of the WT1 tumor suppressor in murine hematopoiesis" @default.
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- W2011049672 doi "https://doi.org/10.1182/blood-2002-06-1656" @default.
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