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Title

AF10 plays a key role in the survival of uncommitted hematopoietic cells

AuthorsChamorro-Garcia, Raquel; Cervera, Margarita ; Arredondo, Juan J.
Issue Date2012
PublisherPublic Library of Science
CitationPLoS ONE 7(12): e51626 (2012)
AbstractHematopoiesis is a complex process regulated by both cell intrinsic and cell extrinsic factors. Alterations in the expression of critical genes during hematopoiesis can modify the balance between stem cell differentiation and proliferation, and may ultimately give rise to leukemia and other diseases. AF10 is a transcription factor that has been implicated in the development of leukemia following chromosomal rearrangements between the AF10 gene and one of at least two other genes, MLL and CALM. The link between AF10 and leukemia, together with the known interactions between AF10 and hematopoietic regulators, suggests that AF10 may be important in hematopoiesis and in leukemic transformation. Here we show that AF10 is important for proper hematopoietic differentiation. The induction of hematopoietic differentiation in both human hematopoietic cell lines and murine total bone marrow cells triggers a decrease of AF10 mRNA and protein levels, particularly in stem cells and multipotent progenitors. Gain- and loss-of-function studies demonstrate that over- or under-expression of AF10 leads to apoptotic cell death in stem cells and multipotent progenitors. We conclude that AF10 plays a key role in the maintenance of multipotent hematopoietic cells. © 2012 Chamorro-Garcia et al.
Publisher version (URL)http://dx.doi.org/10.1371/journal.pone.0051626
URIhttp://hdl.handle.net/10261/76243
DOI10.1371/journal.pone.0051626
Identifiersdoi: 10.1371/journal.pone.0051626
issn: 1932-6203
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