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    Stem Cell Res. 2009 May;2(3):211-8. Epub 2009 Feb 12.

    Characterization of human UTF1, a chromatin-associated protein with repressor activity expressed in pluripotent cells.

    Kooistra SM, Thummer RP, Eggen BJ.

    Source

    Developmental Genetics, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Kerklaan 30, 9751 NN Haren, The Netherlands.

    Abstract

    In mice, during early embryonic development UTF1 (undifferentiated embryonic cell transcription factor 1) is expressed in the inner cell mass of blastocysts and in adult animals expression is restricted to the gonads. (Embryonic) Cells expressing UTF1 are generally considered pluripotent, meaning they can differentiate into all cell types of the adult body. In mouse it was shown that UTF1 is tightly associated with chromatin and that it is required for proper differentiation of embryonic carcinoma and embryonic stem cells. In this study we functionally characterized the human UTF1 protein. We show with localization, subnuclear fractionation, and strip-FRAP analyses that human UTF1 is a tightly DNA-associated protein with transcriptional repressor activity. Our data identify human UTF1 as a pluripotency-associated chromatin component with core histone-like characteristics.

    PMID:
    19393592
    [PubMed - indexed for MEDLINE]

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