Distinct roles of DBHS family members in the circadian transcriptional feedback loop

Elzbieta Kowalska, Jürgen A. Ripperger, Christine Muheim, Bert Maier, Yasuyuki Kurihara, Archa H. Fox, Achim Kramer, Steven A. Brown

    • 18 Citations

    Abstract

    Factors interacting with core circadian clock components are essential to achieve transcriptional feedback necessary for metazoan clocks. Here, we show that all three members of the Drosophila behavior human splicing (DBHS) family of RNA-binding proteins play a role in the mammalian circadian oscillator, abrogating or altering clock function when overexpressed or depleted in cells. Although these proteins are members of so-called nuclear paraspeckles, depletion of paraspeckles themselves via silencing of the structural noncoding RNA (ncRNA) Neat1 did not affect overall clock function, suggesting that paraspeckles are not required for DBHS-mediated circadian effects. Instead, we show that the proteins bound to circadian promoter DNA in a fashion that required the PERIOD (PER) proteins and potently repressed E-box-mediated transcription but not cytomegalovirus (CMV) promoter-mediated transcription when they were exogenously recruited. Nevertheless, mice with one or both copies of these genes deleted show only small changes in period length or clock gene expression in vivo. Data from transient transfections show that each of these proteins can either repress or activate, depending on the context. Taken together, our data suggest that all of the DBHS family members serve overlapping or redundant roles as transcriptional cofactors at circadian clock-regulated genes. © 2012, American Society for Microbiology.

    Original languageEnglish
    Pages (from-to)4585-4594
    Number of pages10
    JournalMolecular and Cellular Biology
    Volume32
    Issue number22
    DOIs
    StatePublished - 2012 Nov 1

    Fingerprint

    Drosophila
    Proteins
    Circadian Clocks
    Genes
    Untranslated RNA
    RNA-Binding Proteins
    Cytomegalovirus
    Transfection
    Gene Expression
    DNA

    ASJC Scopus subject areas

    • Molecular Biology
    • Cell Biology

    Cite this

    Kowalska, E., Ripperger, J. A., Muheim, C., Maier, B., Kurihara, Y., Fox, A. H., ... Brown, S. A. (2012). Distinct roles of DBHS family members in the circadian transcriptional feedback loop. Molecular and Cellular Biology, 32(22), 4585-4594. DOI: 10.1128/MCB.00334-12

    Distinct roles of DBHS family members in the circadian transcriptional feedback loop. / Kowalska, Elzbieta; Ripperger, Jürgen A.; Muheim, Christine; Maier, Bert; Kurihara, Yasuyuki; Fox, Archa H.; Kramer, Achim; Brown, Steven A.

    In: Molecular and Cellular Biology, Vol. 32, No. 22, 01.11.2012, p. 4585-4594.

    Research output: Contribution to journalArticle

    Kowalska, E, Ripperger, JA, Muheim, C, Maier, B, Kurihara, Y, Fox, AH, Kramer, A & Brown, SA 2012, 'Distinct roles of DBHS family members in the circadian transcriptional feedback loop' Molecular and Cellular Biology, vol 32, no. 22, pp. 4585-4594. DOI: 10.1128/MCB.00334-12
    Kowalska E, Ripperger JA, Muheim C, Maier B, Kurihara Y, Fox AH et al. Distinct roles of DBHS family members in the circadian transcriptional feedback loop. Molecular and Cellular Biology. 2012 Nov 1;32(22):4585-4594. Available from, DOI: 10.1128/MCB.00334-12

    Kowalska, Elzbieta; Ripperger, Jürgen A.; Muheim, Christine; Maier, Bert; Kurihara, Yasuyuki; Fox, Archa H.; Kramer, Achim; Brown, Steven A. / Distinct roles of DBHS family members in the circadian transcriptional feedback loop.

    In: Molecular and Cellular Biology, Vol. 32, No. 22, 01.11.2012, p. 4585-4594.

    Research output: Contribution to journalArticle

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