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NuRD-interacting protein ZFP296 regulates genome-wide NuRD localization and differentiation of mouse embryonic stem cells (ChIP-seq)

ABSTRACT: The Nucleosome Remodeling and Deacetylase (NuRD) complex plays an important role in gene expression regulation, stem cell self-renewal, and lineage commitment. Yet little is known about the dynamics of NuRD during cellular differentiation. Here, we study these dynamics using genome-wide profiling and quantitative interaction proteomics in mouse embryonic stem cells (ESCs) and neural progenitor cells (NPCs). The genomic targets of NuRD are highly dynamic during differentiation, with most binding occurring at cell-type specific promoters and enhancers. We identify ZFP296 as a novel, ESC-specific NuRD interactor that also interacts with the SIN3A complex. ChIP-sequencing in Zfp296 knockout (KO) ESCs reveals decreased NuRD binding both genome-wide and at ZFP296 binding sites, although this has little effect on the transcriptome. Nevertheless, Zfp296 KO ESCs exhibit delayed induction of lineage-specific markers upon differentiation to embryoid bodies. In summary, we identify an ESC-specific NuRD interacting protein which regulates genome-wide NuRD binding and cellular differentiation.

ORGANISM(S): Mus musculus

PROVIDER: GSE117287 | GEO | 2018/10/10

REPOSITORIES: GEO

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NuRD-interacting protein ZFP296 regulates genome-wide NuRD localization and differentiation of mouse embryonic stem cells

Project description:The Nucleosome Remodeling and Deacetylase (NuRD) complex plays an important role in gene expression regulation, stem cell self-renewal, and lineage commitment. Yet little is known about the dynamics of NuRD during cellular differentiation. Here, we study these dynamics using genome-wide profiling and quantitative interaction proteomics in mouse embryonic stem cells (ESCs) and neural progenitor cells (NPCs). The genomic targets of NuRD are highly dynamic during differentiation, with most binding occurring at cell-type specific promoters and enhancers. We identify ZFP296 as a novel, ESC-specific NuRD interactor that also interacts with the SIN3A complex. ChIP-sequencing in Zfp296 knockout (KO) ESCs reveals decreased NuRD binding both genome-wide and at ZFP296 binding sites, although this has little effect on the transcriptome. Nevertheless, Zfp296 KO ESCs exhibit delayed induction of lineage-specific markers upon differentiation to embryoid bodies. In summary, we identify an ESC-specific NuRD interacting protein which regulates genome-wide NuRD binding and cellular differentiation.

2018-10-11 | PXD010512 | Pride

NuRD-interacting protein ZFP296 regulates genome-wide NuRD localization and differentiation of mouse embryonic stem cells (RNA-seq)

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NuRD-interacting protein ZFP296 regulates genome-wide NuRD localization and differentiation of mouse embryonic stem cells (ChIP-seq)

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Zfp296 knockout enhances chromatin accessibility and induces a unique state of pluripotency in embryonic stem cells [ChIP-seq]

Project description:Zfp296 KO profoundly affects the gene expression patterns of ESCs. ZFP296 belongs to the C2H2-type ZF family. To map the ZFP296 binding sites across the whole genome, chromatin immunoprecipitation DNA-sequencing (ChIP-seq) was performed.

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An ES cell–specific NuRD complex functions through interaction with Wdr5

Project description:The Nucleosome Remodeling and Deacetylase (NuRD) complex is a chromatin regulatory complex that functions as a transcriptional co-repressor in metazoans. The NuRD subunit Mbd3 is essential for targeting and assembly of a functional NuRD complex as well as embryonic stem cell (ESC) pluripotency. Three Mbd3 isoforms (Mbd3a, Mbd3b, and Mbd3c) are expressed in mouse. Here, we find that the Mbd3c isoform contains a unique 50–amino acid N-terminal region that is necessary for Mbd3c to specifically interact with the histone H3 binding protein Wdr5. Domain analyses of Wdr5 reveal that the Wdr5 H3K4/MLL binding pocket is required for interaction with Mbd3c. We find that while Mbd3c KO ESCs differentiate normally, Mbd3c is redundant with the Mbd3a and Mbd3b isoforms in regulation of gene expression and ESC pluripotency, with the unique Mbd3c N-terminus required for this redundancy. Together, our data characterize a novel NuRD complex variant that functions specifically in ESCs

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Zfp296 knockout enhances chromatin accessibility and induces a unique state of pluripotency in embryonic stem cells [RNA-seq-2]

Project description:Zfp296-KO ESCs grew as flat colonies and could not form teratomas, but could contribute to germline-competent chimeric mice. To analyze the molecular mechanisms causing these unique phenotypes, we compared gene expression profiles among wild-type (WT), Zfp296-KO, and Zfp296-rescue ESCs by RNA-sequencing.

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Zfp296 knockout enhances chromatin accessibility and induces a unique state of pluripotency in embryonic stem cells [RNA-seq-1]

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Project description:The Nucleosome Remodeling and Deacetylation (NuRD) complex is a crucial regulator of cellular differentiation. Two members of the Methyl-CpG-binding domain (MBD) protein family, MBD2 and MBD3, are known to be integral, but mutually exclusive subunits of the NuRD complex. Several MBD2 and MBD3 isoforms are present in mammalian cells, resulting in distinct MBD-NuRD complexes. Whether these different complexes serve distinct functional activities during differentiation is not fully explored. Based on the essential role of MBD3 in lineage commitment, we systematically investigated a diverse set of MBD2 and MBD3 variants for their potential to rescue the differentiation block observed for mouse embryonic stem cells (ESCs) lacking MBD3. While MBD3 is indeed crucial for ESC differentiation to neuronal cells, it functions independently of its MBD domain. We further identify that MBD2 isoforms can replace MBD3 during lineage commitment, however with different potential. Full-length MBD2a only partially rescues the differentiation block, while MBD2b, an isoform lacking an N-terminal GR-rich repeat, fully rescues the Mbd3 KO phenotype. In case of MBD2a, we further show that removing the methylated DNA binding capacity or the GR-rich repeat enables full redundancy to MBD3, highlighting the synergistic requirements for these domains in diversifying NuRD complex function.

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