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    Nature. 2006 Aug 3;442(7102):533-8. Epub 2006 Jun 11.

    Dissecting self-renewal in stem cells with RNA interference.

    Ivanova N, Dobrin R, Lu R, Kotenko I, Levorse J, DeCoste C, Schafer X, Lun Y, Lemischka IR.

    Source

    Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA. nivanova@molbio.princeton.edu

    Abstract

    We present an integrated approach to identify genetic mechanisms that control self-renewal in mouse embryonic stem cells. We use short hairpin RNA (shRNA) loss-of-function techniques to downregulate a set of gene products whose expression patterns suggest self-renewal regulatory functions. We focus on transcriptional regulators and identify seven genes for which shRNA-mediated depletion negatively affects self-renewal, including four genes with previously unrecognized roles in self-renewal. Perturbations of these gene products are combined with dynamic, global analyses of gene expression. Our studies suggest specific biological roles for these molecules and reveal the complexity of cell fate regulation in embryonic stem cells.

    PMID:
    16767105
    [PubMed - indexed for MEDLINE]

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