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Fam60a defines a embryonic stem cell specific Sin3a/Hdac complex.

ABSTRACT: ChIP coupled with NGS identifies genome-wide binding sites of a ES cells specific Sin3a/Hdac complex. The aim of these experiments is to study the role of Fam60a in the Sin3a/Hdac complex. ChIP-Seq experiments reveal that Fam60a is required to maintain high levels of Sin3a binding on target genes in mESCs. Depletion of Fam60a causes a drop of Sin3a binding to target sites. Underlining the function of Fam60a in mES cells, ChIP-seq analysis of Sin3a and Fam60a in mouse fibroblasts reveal strikingly low global binding level of Sin3a to its target genes while Fam60a is absent at these sites.

ORGANISM(S): Mus musculus

PROVIDER: GSE81081 | GEO | 2017/04/24

SECONDARY ACCESSION(S): PRJNA320432

REPOSITORIES: GEO

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Project description:The Sin3 histone deacetylase (HDAC) complex is a 1.2 MDa chromatin modifying complex that can repress transcription by binding to gene promoters and deacetylating histones. The Sin3/HDAC complex can affect cell cycle progression through multiple mechanisms and is among the targets of anticancer drugs, called HDAC inhibitors. We describe the identification of a new subunit of the Sin3 complex named family with sequence similarity 60 member A (FAM60A). We show that FAM60A/Sin3 complexes normally suppress the epithelial-to-mesenchymal transition (EMT) and cell migration. This occurs through transcriptional repression of genes that encode components of the TGF-beta signaling pathway. This work reveals that FAM60A and the Sin3 complex are upstream repressors of TGF-beta signaling, EMT and cell migration and extends the known biological roles of the Sin3 complex. This experiment investigates the role of FAM60A in gene expression by comparing A549 lung cancer cells treated with or without siRNA against FAM60A. The Sin3 histone deacetylase (HDAC) complex is a 1.2 MDa chromatin modifying complex that can repress transcription by binding to gene promoters and deacetylating histones. SDS3 is a core component of the Sin3 complex. The Sin3/HDAC complex can affect cell cycle progression through multiple mechanisms and is among the targets of anticancer drugs, called HDAC inhibitors. We describe the identification of a new subunit of the Sin3 complex named family with sequence similarity 60 member A (FAM60A). We show that FAM60A/Sin3 complexes normally suppress the epithelial-to-mesenchymal transition (EMT) and cell migration. This occurs through transcriptional repression of genes that encode components of the TGF-beta signaling pathway. This work reveals that FAM60A and the Sin3 complex are upstream repressors of TGF-beta signaling, EMT and cell migration and extends the known biological roles of the Sin3 complex. As a base line to better understand the relationship between FAM60A and the Sin3 complex, this experiment investigates the gene expression changes which occur in A549 lung cancer cells when the Sin3 complex is perturbed by knockdown of a core component via siRNA against SDS3. FAM60A siRNA knockdowns were compared to a non-targeting control in triplicate, for a total of 6 samples. SDS3 siRNA knockdowns were compared to a non-targeting control in triplicate, for a total of 6 samples.

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Fam60a defines a embryonic stem cell specific Sin3a/Hdac complex.

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