Cancer Institute A national cancer institute
designated cancer center

Margaret T. Fuller

Publication Details

  • Tissue-specific TAFs counteract polycomb to turn on terminal differentiation SCIENCE Chen, X., Hiller, M., Sancak, Y., Fuller, M. T. 2005; 310 (5749): 869-872


    Polycomb transcriptional silencing machinery is implicated in the maintenance of precursor fates, but how this repression is reversed to allow cell differentiation is unknown. Here we show that testis-specific TAF (TBP-associated factor) homologs required for terminal differentiation of male germ cells may activate target gene expression in part by counteracting repression by Polycomb. Chromatin immunoprecipitation revealed that testis TAFs bind to target promoters, reduce Polycomb binding, and promote local accumulation of H3K4me3, a mark of Trithorax action. Testis TAFs also promoted relocalization of Polycomb Repression Complex 1 components to the nucleolus in spermatocytes, implicating subnuclear architecture in the regulation of terminal differentiation.

    View details for DOI 10.1126/science.1118101

    View details for Web of Science ID 000233121800050

    View details for PubMedID 16272126

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