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    A novel prospective isolation of murine fetal liver progenitors to study in utero hematopoietic defects.

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    Authors
    Draper, Julia E
    Sroczynska, Patrycja
    Fadlullah, Muhammad Z H
    Patel, Rahima
    Newton, Gillian
    Breitwieser, Wolfgang
    Kouskoff, V
    Lacaud, Georges
    Affiliation
    Cancer Research UK Stem Cell Biology Group, Cancer Research UK Manchester Institute, Manchester Cancer Research Centre, The University of Manchester, Manchester
    Issue Date
    2018
    
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    Abstract
    In recent years, highly detailed characterization of adult bone marrow (BM) myeloid progenitors has been achieved and, as a result, the impact of somatic defects on different hematopoietic lineage fate decisions can be precisely determined. Fetal liver (FL) hematopoietic progenitor cells (HPCs) are poorly characterized in comparison, potentially hindering the study of the impact of genetic alterations on midgestation hematopoiesis. Numerous disorders, for example infant acute leukemias, have in utero origins and their study would therefore benefit from the ability to isolate highly purified progenitor subsets. We previously demonstrated that a Runx1 distal promoter (P1)-GFP::proximal promoter (P2)-hCD4 dual-reporter mouse (Mus musculus) model can be used to identify adult BM progenitor subsets with distinct lineage preferences. In this study, we undertook the characterization of the expression of Runx1-P1-GFP and P2-hCD4 in FL. Expression of P2-hCD4 in the FL immunophenotypic Megakaryocyte-Erythroid Progenitor (MEP) and Common Myeloid Progenitor (CMP) compartments corresponded to increased granulocytic/monocytic/megakaryocytic and decreased erythroid specification. Moreover, Runx1-P2-hCD4 expression correlated with several endogenous cell surface markers' expression, including CD31 and CD45, providing a new strategy for prospective identification of highly purified fetal myeloid progenitors in transgenic mouse models. We utilized this methodology to compare the impact of the deletion of either total RUNX1 or RUNX1C alone and to determine the fetal HPCs lineages most substantially affected. This new prospective identification of FL progenitors therefore raises the prospect of identifying the underlying gene networks responsible with greater precision than previously possible.
    Citation
    A novel prospective isolation of murine fetal liver progenitors to study in utero hematopoietic defects. 2018, 14 (1):e1007127 PLoS Genet.
    Journal
    PLoS Genetics
    URI
    http://hdl.handle.net/10541/620809
    DOI
    10.1371/journal.pgen.1007127
    PubMed ID
    29300724
    Type
    Article
    Language
    en
    ISSN
    1553-7404
    ae974a485f413a2113503eed53cd6c53
    10.1371/journal.pgen.1007127
    Scopus Count
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    All Paterson Institute for Cancer Research

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