Modeling of C/EBPalpha mutant acute myeloid leukemia reveals a common expression signature of committed myeloid leukemia-initiating cells.

Peggy Kirstetter, Mikkel B Schuster, Oksana Bereshchenko, Susan Moore, Heidi Dvinge, Elke Kurz, Kim Theilgaard-Mönch, Robert Månsson, Thomas A Pedersen, Thomas Pabst, Evelin Schrock, Bo T Porse, Sten Eirik W Jacobsen, Paul Bertone, Daniel G Tenen, Claus Nerlov

    173 Citations (Scopus)

    Abstract

    Mutations in the CEBPA gene are present in 7%-10% of human patients with acute myeloid leukemia (AML). However, no genetic models exist that demonstrate their etiological relevance. To mimic the most common mutations affecting CEBPA-that is, those leading to loss of the 42 kDa C/EBPalpha isoform (p42) while retaining the 30kDa isoform (p30)-we modified the mouse Cebpa locus to express only p30. p30 supported the formation of granulocyte-macrophage progenitors. However, p42 was required for control of myeloid progenitor proliferation, and p42-deficient mice developed AML with complete penetrance. p42-deficient leukemia could be transferred by a Mac1+c-Kit+ population that gave rise only to myeloid cells in recipient mice. Expression profiling of this population against normal Mac1+c-Kit+ progenitors revealed a signature shared with MLL-AF9-transformed AML.
    Original languageEnglish
    JournalCancer Cell
    Volume13
    Issue number4
    Pages (from-to)299-310
    Number of pages11
    ISSN1535-6108
    DOIs
    Publication statusPublished - 2008

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