Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Genome wide maps of histone demethylase jmjd3, chromatin state and RNA pol in mouse bone marrow-derived macrophages

ABSTRACT: Inflammatory responses triggered by either microbial or endogenous stimuli rely on a complex transcriptional program that involves the differential expression of hundreds of genes. Jmjd3, a JmjC family histone demethylase (HDM), is quickly induced by the transcription factor NF-kB in response to inflammatory stimuli. Jmjd3 erases a histone mark associated with transcriptional repression and silencing, trimethylated lysine 27 in histone H3 (H3K27me3). Thus, Jmjd3-mediated demethylation of H3K27me3 links inflammation to the control of a histone modification involved in lineage determination, differentiation and tissue homeostasis. However, the specific contribution of Jmjd3 induction to innate immunity and inflammation remains unknown. Here we combined genome-wide mapping and gene knockout studies to investigate this issue. Chromatin immunoprecipitation (ChIP) coupled to ultra high-throughput sequencing (ChIP-Seq) in LPS-stimulated primary mouse macrophages demonstrated that Jmid3 is recruited to a large number of genomic targets with a strong preference for active transcription start sites (TSS). Virtually all Jmjd3-bound TSSs were characterized by high levels of H3K4me3, a marker of gene activity, and high levels of RNA polymerase II (Pol_II). Inducible genes showing a strong increase in H3K4me3 and Pol_II recruitment after endotoxin treatment (including those encoding several cytokines, chemokines and antiviral proteins) were in most cases Jmjd3-associated. In Jmjd3-knockout macrophages, initial RNA_Pol II recruitment and activation of Jmjd3 target genes was unaffected, but RNA_Pol II was prematurely released, thus resulting in non-sustained responses. Importantly, most Jmjd3 target genes were not associated with detectable levels of H3K27me3, and transcriptional effects of Jmjd3 absence in the window of time analyzed here were uncoupled from measurable effects on this histone mark. Our data indicate that Jmjd3 is the effector of an NF-kB-controlled feed-forward transcriptional loop pervasively sustaining inflammatory transcriptional responses in a manner that is independent of H3K27me3 demethylation, and suggest the possible use of anti-Jmjd3 drugs to dampen pathologic inflammation. Keywords: Epigenetics Genome wide maps of histone demethylase jmjd3, the histone marks H3K4me3 and H3K27me3, and RNA-Polymerase II induction in mouse bone marrow-derived macrophages of two types: (a) untreated and (b) stimulated with lipopolysaccharide and interferon gamma to produce an inflammatory response.

ORGANISM(S): Mus musculus

SUBMITTER: Vipin Narang

PROVIDER: E-GEOD-17631 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Jmjd3 contributes to the control of gene expression in LPS-activated macrophages.

De Santa Francesca F Narang Vipin V Yap Zhei Hwee ZH Tusi Betsabeh Khoramian BK Burgold Thomas T Austenaa Liv L Bucci Gabriele G Caganova Marieta M Notarbartolo Samuele S Casola Stefano S Testa Giuseppe G Sung Wing-Kin WK Wei Chia-Lin CL Natoli Gioacchino G

The EMBO journal 20090924 21

Jmjd3, a JmjC family histone demethylase, is induced by the transcription factor NF-kB in response to microbial stimuli. Jmjd3 erases H3K27me3, a histone mark associated with transcriptional repression and involved in lineage determination. However, the specific contribution of Jmjd3 induction and H3K27me3 demethylation to inflammatory gene expression remains unknown. Using chromatin immunoprecipitation-sequencing we found that Jmjd3 is preferentially recruited to transcription start sites chara ...[more]

PMID: 19779457

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Project description:Inflammatory responses triggered by either microbial or endogenous stimuli rely on a complex transcriptional program that involves the differential expression of hundreds of genes. Jmjd3, a JmjC family histone demethylase (HDM), is quickly induced by the transcription factor NF-kB in response to inflammatory stimuli. Jmjd3 erases a histone mark associated with transcriptional repression and silencing, trimethylated lysine 27 in histone H3 (H3K27me3). Thus, Jmjd3-mediated demethylation of H3K27me3 links inflammation to the control of a histone modification involved in lineage determination, differentiation and tissue homeostasis. However, the specific contribution of Jmjd3 induction to innate immunity and inflammation remains unknown. Here we combined genome-wide mapping and gene knockout studies to investigate this issue. Chromatin immunoprecipitation (ChIP) coupled to ultra high-throughput sequencing (ChIP-Seq) in LPS-stimulated primary mouse macrophages demonstrated that Jmid3 is recruited to a large number of genomic targets with a strong preference for active transcription start sites (TSS). Virtually all Jmjd3-bound TSSs were characterized by high levels of H3K4me3, a marker of gene activity, and high levels of RNA polymerase II (Pol_II). Inducible genes showing a strong increase in H3K4me3 and Pol_II recruitment after endotoxin treatment (including those encoding several cytokines, chemokines and antiviral proteins) were in most cases Jmjd3-associated. In Jmjd3-knockout macrophages, initial RNA_Pol II recruitment and activation of Jmjd3 target genes was unaffected, but RNA_Pol II was prematurely released, thus resulting in non-sustained responses. Importantly, most Jmjd3 target genes were not associated with detectable levels of H3K27me3, and transcriptional effects of Jmjd3 absence in the window of time analyzed here were uncoupled from measurable effects on this histone mark. Our data indicate that Jmjd3 is the effector of an NF-kB-controlled feed-forward transcriptional loop pervasively sustaining inflammatory transcriptional responses in a manner that is independent of H3K27me3 demethylation, and suggest the possible use of anti-Jmjd3 drugs to dampen pathologic inflammation. Keywords: Epigenetics

Project description:The ability of cells to perceive and translate versatile cues into differential chromatin and transcriptional states is critical for many biological processes1-4. In plants, timely transition to a flowering state is crucial for successful reproduction5-7. EARLY BOLTING IN SHORT DAY (EBS) is a negative transcriptional regulator that prevents premature flowering in Arabidopsis8,9. Here, we revealed that bivalent bromo-adjacent homology (BAH)-plant homeodomain (PHD) reader modules of EBS bind H3K27me3 and H3K4me3, respectively. A subset of EBS-associated genes was co-enriched with H3K4me3, H3K27me3, and the Polycomb repressor complex 2 (PRC2). Interestingly, EBS adopts an auto-inhibition mode to mediate its binding preference switch between H3K27me3 and H3K4me3. This binding balance is critical because disruption of either EBS-H3K27me3 or EBS-H3K4me3 interaction induces EBS-mediated early floral transition. This study identifies a single bivalent chromatin reader capable of recognizing two antagonistic histone marks and reveals a distinct mechanism of interplay between active and repressive chromatin states.The ability of cells to perceive and translate versatile cues into differential chromatin and transcriptional states is critical for many biological processes1-4. In plants, timely transition to a flowering state is crucial for successful reproduction5-7. EARLY BOLTING IN SHORT DAY (EBS) is a negative transcriptional regulator that prevents premature flowering in Arabidopsis8,9. Here, we revealed that bivalent bromo-adjacent homology (BAH)-plant homeodomain (PHD) reader modules of EBS bind H3K27me3 and H3K4me3, respectively. A subset of EBS-associated genes was co-enriched with H3K4me3, H3K27me3, and the Polycomb repressor complex 2 (PRC2). Interestingly, EBS adopts an auto-inhibition mode to mediate its binding preference switch between H3K27me3 and H3K4me3. This binding balance is critical because disruption of either EBS-H3K27me3 or EBS-H3K4me3 interaction induces EBS-mediated early floral transition. This study identifies a single bivalent chromatin reader capable of recognizing two antagonistic histone marks and reveals a distinct mechanism of interplay between active and repressive chromatin states.v

Dataset Information

Genome wide maps of histone demethylase jmjd3, chromatin state and RNA pol in mouse bone marrow-derived macrophages

Publications

Jmjd3 contributes to the control of gene expression in LPS-activated macrophages.

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