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    Haploinsufficiency of Runx1 results in the acceleration of mesodermal development and hemangioblast specification upon in vitro differentiation of ES cells.

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    Authors
    Lacaud, Georges
    Kouskoff, Valerie
    Trumble, Anne
    Schwantz, Staci
    Keller, Gordon
    Affiliation
    Carl C. Icahn Center for Gene Therapy and Molecular Medicine, Mount Sinai School of Medicine, New York, NY 10029, USA.
    Issue Date
    2004-02-01
    
    Metadata
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    Abstract
    The AML1 gene (recently renamed Runx1), which encodes the DNA-binding subunit of a transcription factor of the core binding factor (CBF) family, is required for the establishment of definitive hematopoiesis. We have previously demonstrated that Runx1 is expressed in yolk sac mesodermal cells prior to the establishment of the blood islands and in the embryoid body (EB)-derived blast-colony-forming cells (BL-CFCs), the in vitro equivalent of the hemangioblast. Analysis of Runx1-deficient embryonic stem (ES) cells demonstrated that this gene is essential for the generation of normal numbers of blast colonies, the progeny of the BL-CFCs. In the present study, we analyzed the potential of Runx1(+/-) ES cells to determine if heterozygosity at the Runx1 locus impacts early developmental events leading to the commitment of the BL-CFCs. Our results indicate that Runx1 heterozygosity leads to an acceleration of mesodermal commitment and specification to the BL-CFCs and to the hematopoietic lineages in EBs.
    Citation
    Haploinsufficiency of Runx1 results in the acceleration of mesodermal development and hemangioblast specification upon in vitro differentiation of ES cells. 2004, 103 (3):886-9 Blood
    Journal
    Blood
    URI
    http://hdl.handle.net/10541/78142
    DOI
    10.1182/blood-2003-06-2149
    PubMed ID
    14525762
    Type
    Article
    Language
    en
    ISSN
    0006-4971
    ae974a485f413a2113503eed53cd6c53
    10.1182/blood-2003-06-2149
    Scopus Count
    Collections
    All Paterson Institute for Cancer Research

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