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    Genes Dev. 2005 Apr 1;19(7):794-803. Epub 2005 Mar 17.

    Maintenance of spermatogenesis requires TAF4b, a gonad-specific subunit of TFIID.

    Falender AE, Freiman RN, Geles KG, Lo KC, Hwang K, Lamb DJ, Morris PL, Tjian R, Richards JS.

    Source

    Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030, USA.

    Abstract

    The establishment and maintenance of spermatogenesis in mammals requires specialized networks of gene expression programs in the testis. The gonad-specific TAF4b component of TFIID (formerly TAF(II)105) is a transcriptional regulator enriched in the mouse testis. Herein we show that TAF4b is required for maintenance of spermatogenesis in the mouse. While young Taf4b-null males are initially fertile, Taf4b-null males become infertile by 3 mo of age and eventually exhibit seminiferous tubules devoid of germ cells. At birth, testes of Taf4b-null males appear histologically normal; however, at post-natal day 3 gonocyte proliferation is impaired and expression of spermatogonial stem cell markers c-Ret, Plzf, and Stra8 is reduced. Together, these data indicate that TAF4b is required for the precise expression of gene products essential for germ cell proliferation and suggest that TAF4b may be required for the regulation of spermatogonial stem cell specification and proliferation that is obligatory for normal spermatogenic maintenance in the adult.

    PMID:
    15774719
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC1074317
    Free PMC Article

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