Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA731887 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR14651306.fastq.gz | Fastqsanger.gz | |||
| SRR14651307.fastq.gz | Fastqsanger.gz | |||
| SRR14651308.fastq.gz | Fastqsanger.gz | |||
| SRR14651309.fastq.gz | Fastqsanger.gz |
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Project description:Bromodomain containing 9 (BRD9) regulates macrophage inflammatory responses and modulates glucocorticoids receptor activity.
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Project description:Bromodomain containing 9 (BRD9) regulates macrophage inflammatory responses and modulates glucocorticoids receptor activity [RNA-seq]
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Project description:Bromodomain containing 9 (BRD9) regulates macrophage inflammatory responses and modulates glucocorticoids receptor activity [ChIP-seq]
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Project description:Bromodomain containing 9 (BRD9) regulates macrophage inflammatory responses and modulates glucocorticoids receptor activity [CUT&RUN]
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Project description:In macrophages, homeostatic and immune signals induce distinct sets of transcriptional responses, defining the cellular identity and function. The activity of lineage specific and signal induced transcription factors are regulated by chromatin accessibility and other epigenetic modulators. Glucocorticoids are potent anti-inflammatory drugs. Acting through the glucocorticoid receptor (GR), glucocorticoids directly repress inflammatory responses at transcriptional and epigenetic levels in macrophages. In this study, we identified bromodomain containing 9 (BRD9), a component of SWI/SNF chromatin remodeling complex, as a novel modulator for glucocorticoids responses in macrophages. Inhibition, degradation, or genetic depletion of BRD9 in bone marrow derived macrophages (BMDM), significantly compromised their responses to inflammatory stimuli, such as liposaccharides (LPS), and interferons. A large portion of BRD9-regulated genes are also known to be regulated by dexamethasone, a synthetic glucocorticoid. Importantly, pharmacologic inhibition of BRD9 is able to further potentiate the anti-inflammatory responses of dexamethasone, by further repressing the GR downstream targets. Mechanistically, BRD9 co-localized with a subset of GR binding sites. Depletion of BRD9 enhanced GR occupancy at a subset of its targets. Enhanced occupancy of GR at these sites is associated with further repression of inflammation-related genes. Collectively, these findings establish BRD9 as a key modulator of macrophage inflammatory responses, revealing the therapeutic potential of BRD9 inhibitors as modulators for glucocorticoids action.
2021-08-23 | GSE175584 | GEO
Project description:In macrophages, homeostatic and immune signals induce distinct sets of transcriptional responses, defining the cellular identity and function. The activity of lineage specific and signal induced transcription factors are regulated by chromatin accessibility and other epigenetic modulators. Glucocorticoids are potent anti-inflammatory drugs. Acting through the glucocorticoid receptor (GR), glucocorticoids directly repress inflammatory responses at transcriptional and epigenetic levels in macrophages. In this study, we identified bromodomain containing 9 (BRD9), a component of SWI/SNF chromatin remodeling complex, as a novel modulator for glucocorticoids responses in macrophages. Inhibition, degradation, or genetic depletion of BRD9 in bone marrow derived macrophages (BMDM), significantly compromised their responses to inflammatory stimuli, such as liposaccharides (LPS), and interferons. A large portion of BRD9-regulated genes are also known to be regulated by dexamethasone, a synthetic glucocorticoid. Importantly, pharmacologic inhibition of BRD9 is able to further potentiate the anti-inflammatory responses of dexamethasone, by further repressing the GR downstream targets. Mechanistically, BRD9 co-localized with a subset of GR binding sites. Depletion of BRD9 enhanced GR occupancy at a subset of its targets. Enhanced occupancy of GR at these sites is associated with further repression of inflammation-related genes. Collectively, these findings establish BRD9 as a key modulator of macrophage inflammatory responses, revealing the therapeutic potential of BRD9 inhibitors as modulators for glucocorticoids action.
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Project description:In macrophages, homeostatic and immune signals induce distinct sets of transcriptional responses, defining the cellular identity and function. The activity of lineage specific and signal induced transcription factors are regulated by chromatin accessibility and other epigenetic modulators. Glucocorticoids are potent anti-inflammatory drugs. Acting through the glucocorticoid receptor (GR), glucocorticoids directly repress inflammatory responses at transcriptional and epigenetic levels in macrophages. In this study, we identified bromodomain containing 9 (BRD9), a component of SWI/SNF chromatin remodeling complex, as a novel modulator for glucocorticoids responses in macrophages. Inhibition, degradation, or genetic depletion of BRD9 in bone marrow derived macrophages (BMDM), significantly compromised their responses to inflammatory stimuli, such as liposaccharides (LPS), and interferons. A large portion of BRD9-regulated genes are also known to be regulated by dexamethasone, a synthetic glucocorticoid. Importantly, pharmacologic inhibition of BRD9 is able to further potentiate the anti-inflammatory responses of dexamethasone, by further repressing the GR downstream targets. Mechanistically, BRD9 co-localized with a subset of GR binding sites. Depletion of BRD9 enhanced GR occupancy at a subset of its targets. Enhanced occupancy of GR at these sites is associated with further repression of inflammation-related genes. Collectively, these findings establish BRD9 as a key modulator of macrophage inflammatory responses, revealing the therapeutic potential of BRD9 inhibitors as modulators for glucocorticoids action.
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Project description:The non-canonical BAF complex (ncBAF) subunit BRD9 is essential for acute myeloid leukemia (AML) cell viability but has an unclear role in leukemogenesis. Because BRD9 is required for ncBAF complex assembly through its DUF3512 domain, precise bromodomain inhibition is necessary to parse the role of BRD9 as a transcriptional regulator from that of a scaffolding protein. To understand the specific role of BRD9 bromodomain function in regulating AML, we selected a panel of five AML cell lines with distinct driver mutations, disease classifications, and genomic aberrations and subjected them to short-term BRD9 bromodomain inhibition. We characterized the bromodomain-dependent growth of these cell lines, identifying a dependency in AML cell lines but not HEK293T cells. To define a mechanism through which BRD9 maintains AML cell survival, we examined nascent transcription, chromatin accessibility, and ncBAF complex binding genome-wide after bromodomain inhibition. We identified extensive regulation of transcription by BRD9 bromodomain activity, including repression of myeloid maturation factors and tumor suppressor genes, while standard AML chemotherapy targets (Bcl2, Btk, Kit) were repressed by inhibition of the BRD9 bromodomain. BRD9 bromodomain activity maintained accessible chromatin at both gene promoters and gene-distal putative enhancer regions, in a manner that qualitatively correlated with enrichment of BRD9 binding. Furthermore, we identified reduced chromatin accessibility at GATA, ETS, and AP-1 motifs and increased chromatin accessibility at SNAIL-, HIC-, and TP53-recognized motifs after BRD9 inhibition. We interpret these data as signifying a role for BRD9 in regulating the differentiation block that is common to all AML subtypes through modulation of accessibility at hematopoietic transcription factor binding sites.
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Project description:The non-canonical BAF complex (ncBAF) subunit BRD9 is essential for acute myeloid leukemia (AML) cell viability but has an unclear role in leukemogenesis. Because BRD9 is required for ncBAF complex assembly through its DUF3512 domain, precise bromodomain inhibition is necessary to parse the role of BRD9 as a transcriptional regulator from that of a scaffolding protein. To understand the specific role of BRD9 bromodomain function in regulating AML, we selected a panel of five AML cell lines with distinct driver mutations, disease classifications, and genomic aberrations and subjected them to short-term BRD9 bromodomain inhibition. We characterized the bromodomain-dependent growth of these cell lines, identifying a dependency in AML cell lines but not HEK293T cells. To define a mechanism through which BRD9 maintains AML cell survival, we examined nascent transcription, chromatin accessibility, and ncBAF complex binding genome-wide after bromodomain inhibition. We identified extensive regulation of transcription by BRD9 bromodomain activity, including ATACseq_Repression of myeloid maturation factors and tumor suppressor genes, while standard AML chemotherapy targets (Bcl2, Btk, Kit) were ATACseq_Repressed by inhibition of the BRD9 bromodomain. BRD9 bromodomain activity maintained accessible chromatin at both gene promoters and gene-distal putative enhancer regions, in a manner that qualitatively correlated with enrichment of BRD9 binding. Furthermore, we identified reduced chromatin accessibility at GATA, ETS, and AP-1 motifs and increased chromatin accessibility at SNAIL-, HIC-, and TP53-recognized motifs after BRD9 inhibition. We interpret these data as signifying a role for BRD9 in regulating the differentiation block that is common to all AML subtypes through modulation of accessibility at hematopoietic transcription factor binding sites.
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Project description:The non-canonical BAF complex (ncBAF) subunit BRD9 is essential for acute myeloid leukemia (AML) cell viability but has an unclear role in leukemogenesis. Because BRD9 is required for ncBAF complex assembly through its DUF3512 domain, precise bromodomain inhibition is necessary to parse the role of BRD9 as a transcriptional regulator from that of a scaffolding protein. To understand the specific role of BRD9 bromodomain function in regulating AML, we selected a panel of five AML cell lines with distinct driver mutations, disease classifications, and genomic aberrations and subjected them to short-term BRD9 bromodomain inhibition. We characterized the bromodomain-dependent growth of these cell lines, identifying a dependency in AML cell lines but not HEK293T cells. To define a mechanism through which BRD9 maintains AML cell survival, we examined nascent transcription, chromatin accessibility, and ncBAF complex binding genome-wide after bromodomain inhibition. We identified extensive regulation of transcription by BRD9 bromodomain activity, including repression of myeloid maturation factors and tumor suppressor genes, while standard AML chemotherapy targets (Bcl2, Btk, Kit) were repressed by inhibition of the BRD9 bromodomain. BRD9 bromodomain activity maintained accessible chromatin at both gene promoters and gene-distal putative enhancer regions, in a manner that qualitatively correlated with enrichment of BRD9 binding. Furthermore, we identified reduced chromatin accessibility at GATA, ETS, and AP-1 motifs and increased chromatin accessibility at SNAIL-, HIC-, and TP53-recognized motifs after BRD9 inhibition. We interpret these data as signifying a role for BRD9 in regulating the differentiation block that is common to all AML subtypes through modulation of accessibility at hematopoietic transcription factor binding sites.
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