DUX4 orchestrates translational reprograming by broadly suppressing translation efficiency [Ribo-seq]
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ABSTRACT:
PROVIDER: PRJNA850795 | ENA |
REPOSITORIES: ENA
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Project description:DUX4, an embryonic transcription factor normally silenced in somatic tissues, was recently shown to reduce major histocompatibility complex I (MHC-I) and promote immune evasion in numerous cancer types. We report that transient expression of DUX4 results in the long-term suppression of interferon-gamma induction of MHC-I and the immunoproteasome. Brief expression of transcriptionally active DUX4 leads to a prolonged decrease in protein synthesis, altering the activity of translation initiation regulators eIF2a, eIF4E, 4EBP1, and translation elongation factor eEF2. Translational profiling identified mRNAs susceptible to DUX4-induced inhibition of translation initiation and elongation, including mRNAs encoding antigen presentation factors. We show that DUX4 orchestrates translational reprogramming by broadly attenuating protein synthesis while inducing the expression of RNAs encoding early embryonic proteins that are translationally up regulated and predicted to be less vulnerable to translational inhibition. Endogenous expression of DUX4 and its target genes in FSHD muscle cells and SuSa germinoma cells also correlates with suppression of protein synthesis and reduced MHC-I presentation. Our findings reveal a novel role of DUX4 in modulating translational control to reshape the cellular translatome with important implications for development and disease.
2023-02-01 | GSE206437 | GEO
Project description:DUX4 orchestrates translational reprograming by broadly suppressing translation efficiency.
| PRJNA850793 | ENA
Project description:DUX4, an embryonic transcription factor normally silenced in somatic tissues, was recently shown to reduce major histocompatibility complex I (MHC-I) and promote immune evasion in numerous cancer types. We report that transient expression of DUX4 results in the long-term suppression of interferon-gamma induction of MHC-I and the immunoproteasome. Brief expression of transcriptionally active DUX4 leads to a prolonged decrease in protein synthesis, altering the activity of translation initiation regulators eIF2a, eIF4E, 4EBP1, and translation elongation factor eEF2. Translational profiling identified mRNAs susceptible to DUX4-induced inhibition of translation initiation and elongation, including mRNAs encoding antigen presentation factors. We show that DUX4 orchestrates translational reprogramming by broadly attenuating protein synthesis while inducing the expression of RNAs encoding early embryonic proteins that are translationally up regulated and predicted to be less vulnerable to translational inhibition. Endogenous expression of DUX4 and its target genes in FSHD muscle cells and SuSa germinoma cells also correlates with suppression of protein synthesis and reduced MHC-I presentation. Our findings reveal a novel role of DUX4 in modulating translational control to reshape the cellular translatome with important implications for development and disease.
2023-04-11 | GSE206436 | GEO
Project description:DUX4, an embryonic transcription factor normally silenced in somatic tissues, was recently shown to reduce major histocompatibility complex I (MHC-I) and promote immune evasion in numerous cancer types. We report that transient expression of DUX4 results in the long-term suppression of interferon-gamma induction of MHC-I and the immunoproteasome. Brief expression of transcriptionally active DUX4 leads to a prolonged decrease in protein synthesis, altering the activity of translation initiation regulators eIF2a, eIF4E, 4EBP1, and translation elongation factor eEF2. Translational profiling identified mRNAs susceptible to DUX4-induced inhibition of translation initiation and elongation, including mRNAs encoding antigen presentation factors. We show that DUX4 orchestrates translational reprogramming by broadly attenuating protein synthesis while inducing the expression of RNAs encoding early embryonic proteins that are translationally up regulated and predicted to be less vulnerable to translational inhibition. Endogenous expression of DUX4 and its target genes in FSHD muscle cells and SuSa germinoma cells also correlates with suppression of protein synthesis and reduced MHC-I presentation. Our findings reveal a novel role of DUX4 in modulating translational control to reshape the cellular translatome with important implications for development and disease.
2023-02-01 | GSE206438 | GEO
Project description:DUX4 orchestrates translational reprograming by broadly suppressing translation efficiency [RNA-seq]
| PRJNA850794 | ENA
Project description:DUX4 orchestrates translational reprograming by broadly suppressing translation efficiency [polysome-seq]
| PRJNA850796 | ENA
Project description:This SuperSeries is composed of the SubSeries listed below.
2023-02-01 | GSE206439 | GEO
Project description:DUX4 activates the first wave of zygotic gene expression in the early embryo. Mis-expression of DUX4 in skeletal muscle causes facioscapulohumeral dystrophy (FSHD), whereas expression in cancers suppresses IFNg-induction of MHC Class I and contributes to immune evasion. We show that the DUX4 protein broadly suppresses immune signaling pathways—including IFNg, IFNb, DDX58, IFIH1 and cGAS mediated pathways. A conserved region containing (L)LxxL(L) motifs in the DUX4 carboxyterminal domain (CTD) was necessary to suppress interferon stimulated genes (ISGs). Co-immunoprecipitation identified DUX4-CTD interaction with multiple immune signaling factors, including STAT1. The DUX4-CTD (L)LxxL(L) region interacts with phosphorylated STAT1, sequesters it in the nucleus, modestly reduces its DNA binding, and prevents STAT1 from inducing ISG transcription. Mouse Dux similarly interacted with STAT1 and suppressed IFNg induction of ISGs. These findings identify an evolved role of the DUXC family in modulating immune signaling pathways with implications for development, cancers, and FSHD.
2022-11-01 | GSE186244 | GEO
Project description:DUX4 activates the first wave of zygotic gene expression in the early embryo. Mis-expression of DUX4 in skeletal muscle causes facioscapulohumeral dystrophy (FSHD), whereas expression in cancers suppresses IFNg-induction of MHC Class I and contributes to immune evasion. We show that the DUX4 protein broadly suppresses immune signaling pathways—including IFNg, IFNb, DDX58, IFIH1 and cGAS mediated pathways. A conserved region containing (L)LxxL(L) motifs in the DUX4 carboxyterminal domain (CTD) was necessary to suppress interferon stimulated genes (ISGs). Co-immunoprecipitation identified DUX4-CTD interaction with multiple immune signaling factors, including STAT1. The DUX4-CTD (L)LxxL(L) region interacts with phosphorylated STAT1, sequesters it in the nucleus, modestly reduces its DNA binding, and prevents STAT1 from inducing ISG transcription. Mouse Dux similarly interacted with STAT1 and suppressed IFNg induction of ISGs. These findings identify an evolved role of the DUXC family in modulating immune signaling pathways with implications for development, cancers, and FSHD.
2023-05-09 | GSE209785 | GEO
Project description:DUX4 activates the first wave of zygotic gene expression in the early embryo. Mis-expression of DUX4 in skeletal muscle causes facioscapulohumeral dystrophy (FSHD), whereas expression in cancers suppresses IFNg-induction of MHC Class I and contributes to immune evasion. We show that the DUX4 protein broadly suppresses immune signaling pathways—including IFNg, IFNb, DDX58, IFIH1 and cGAS mediated pathways. A conserved region containing (L)LxxL(L) motifs in the DUX4 carboxyterminal domain (CTD) was necessary to suppress interferon stimulated genes (ISGs). Co-immunoprecipitation identified DUX4-CTD interaction with multiple immune signaling factors, including STAT1. The DUX4-CTD (L)LxxL(L) region interacts with phosphorylated STAT1, sequesters it in the nucleus, modestly reduces its DNA binding, and prevents STAT1 from inducing ISG transcription. Mouse Dux similarly interacted with STAT1 and suppressed IFNg induction of ISGs. These findings identify an evolved role of the DUXC family in modulating immune signaling pathways with implications for development, cancers, and FSHD.
2023-05-10 | PXD029215 | Pride