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AP-2γ is Required for Maintenance of Multipotent Mammary Stem Cells

ABSTRACT: AP-2γ is Required for Maintenance of Multipotent Mammary Stem Cells

PROVIDER: PRJNA599128 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR10832037_1.fastq.gz	Fastqsanger.gz
	SRR10832037_2.fastq.gz	Fastqsanger.gz
	SRR10832038_1.fastq.gz	Fastqsanger.gz
	SRR10832038_2.fastq.gz	Fastqsanger.gz
	SRR10832039_1.fastq.gz	Fastqsanger.gz

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AP-2γ is Required for Maintenance of Multipotent Mammary Stem Cells

Project description:Mammary gland ductal morphogenesis depends on the differentiation of mammary stem cells (MaSCs) into basal and luminal lineages. The AP-2γ transcription factor, encoded by Tfap2c, has a central role in mammary gland development but its effect in mammary lineages and specifically MaSCs is largely unknown. Herein, we utilized an inducible, conditional knockout of Tfap2c to elucidate the role of AP-2γ in maintenance and differentiation of MaSCs. Loss of AP-2γ in the basal epithelium profoundly altered the transcriptomes and decreased the number of cells within several clusters of mammary epithelial cells, including adult MaSCs and luminal progenitors. AP-2γ regulated the expression of genes known to be required for mammary development including Cebpb, Nfkbia, and Rspo1. As a result, AP-2γ-deficient mice exhibited repressed mammary gland ductal outgrowth and inhibition of regenerative capacity. The findings demonstrate that AP-2γ can regulate development of mammary gland structures potentially regulating maintenance and differentiation of multipotent MaSCs.

2020-12-30 | GSE143159 | GEO

AP-2γ Is Required for Maintenance of Multipotent Mammary Stem Cells.

Project description:Mammary gland ductal morphogenesis depends on the differentiation of mammary stem cells (MaSCs) into basal and luminal lineages. The AP-2γ transcription factor, encoded by Tfap2c, has a central role in mammary gland development but its effect in mammary lineages and specifically MaSCs is largely unknown. Here, we utilized an inducible, conditional knockout of Tfap2c to elucidate the role of AP-2γ in maintenance and differentiation of MaSCs. Loss of AP-2γ in the basal epithelium profoundly altered the transcriptomes and decreased the number of cells within several clusters of mammary epithelial cells, including adult MaSCs and luminal progenitors. AP-2γ regulated the expression of genes known to be required for mammary development, including Cebpb, Nfkbia, and Rspo1. As a result, AP-2γ-deficient mice exhibited repressed mammary gland ductal outgrowth and inhibition of regenerative capacity. The findings demonstrate that AP-2γ can regulate development of mammary gland structures potentially regulating maintenance and differentiation of multipotent MaSCs.

| S-EPMC7897584 | biostudies-literature

Gene expression data from AP-2γ silenced MCF-7 cells

Project description:Overexpression of the AP-2γ transcription factor in breast tumours has been identified as an independent predictor of poor outcome and failure of hormone therapy, even in ER positive, ErbB2 negative tumours; markers of a more favourable prognosis. To understand further the role of AP-2γ in breast carcinoma, we have used an RNA interference and gene expression profiling strategy using the MCF-7 cell line as a model for ER positive, ErbB2 negative tumours with AP-2γ overexpression. Gene expression changes between control and silenced cells implicate AP-2γ in the control of cell cycle progression and developmental signalling. Keywords: RNA interference

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TRIM37 augments AP-2γ transcriptional activity and cellular localization via K63-linked polyubiquitination to drive breast cancer progression [ChIP-seq]

Project description:Using a proteomics approach, we identified the Tripartite Motif Containing 37 (TRIM37) as a novel transcriptional coactivator of AP-2γ. We demonstrate TRIM37 facilitates AP-2γ chromatin binding to regulate the AP-2γ mediated transcriptional program directly. We provide evidence that TRIM37 achieves this by stimulating K63-chain-linked polyubiquitination of AP-2γ, promoting protein localization from the cytoplasm to the nucleus. In clinical analyses, we find TRIM37 is upregulated in multiple breast cancer datasets, supporting our findings that TRIM37-AP-2γ interaction is essential for breast cancer tumor growth. Overall, our work revealed that TRIM37 is an oncogenic coactivator of AP-2γ in breast cancer and provides a novel therapeutic target for treating the disease.

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TRIM37 augments AP-2γ transcriptional activity and cellular localization via K63-linked polyubiquitination to drive breast cancer progression [RNA-seq]

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Determination of the WWOX gene function in modulating cellular pathways activated by AP-2α and AP-2γ transcription factors in bladder cancer

Project description:The aim of the current study was to investigate how various levels of WWOX, AP-2α and AP-2γ affect signaling pathways in bladder cancer cell lines. Global transcriptome analysis using CAGE-seq was conducted.

2022-01-17 | GSE193659 | GEO

Activator protein-2γ is a critical determinant of estrogen receptor interactome formation and gene transcription in breast cancer [expression]

Project description:Estrogen receptor α (ERα) is key player in the progression of breast cancer. ERα binds to DNA and mediates long-range chromatin interactions throughout the genome, but the underlying mechanism in this process is unclear. Here, we show that AP-2 motifs are highly enriched in the ERα binding sites (ERBS) identified from the recent ChIA-PET of ERα. More importantly, we demonstrate that AP-2γ (also known as TFAP2C), a member of the AP-2 family which has been implicated in breast cancer oncogenesis, is recruited to chromatin in a ligand-independent manner and co-localized with ERα binding events. Furthermore, pertubation of AP-2γ expression disrupts ERα DNA binding, long-range chromatin interactions, and gene transcription. Using ChIP-seq, we show that AP-2γ and ERα binding occurs in close proximity on a genome-wide scale. The majority of these shared genomic regions are also occupied by the pioneer factor, FoxA1. AP-2γ is required for efficient FoxA1 binding and vice versa. Finally, we show that most ERBS associated with long-range chromatin interactions are co-localized with both AP-2γ and FoxA1. Together, our results suggest AP-2γ is an essential factor in ERα-mediated transcription, primarily working together with FoxA1 to facilitate ERα binding and long-range chromatin interactions.

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Activator protein-2γ is a critical determinant of estrogen receptor interactome formation and gene transcription in breast cancer [ChIP-Seq]

2011-06-03 | GSE23852 | GEO

Genome-wide identification of AP-2α by ChIP-chip in breast cancer cell line MCF7

Project description:The AP-2 family of transcription factors is involved in the regulation of embryonic development, cell proliferation and tumorigenesis. To date, five members of the AP-2 family have been identified: AP-2α, AP-2β, AP-2γ, AP-2δ and AP-2ε. All AP-2 proteins bind as homo- or heterodimers to the consensus sequence of 5'- GCCNNNGGC-3' and directly regulate transcription of their target genes. Among these, AP-2α is the best-characterized gene.

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Early lineage segregation of multipotent embryonic mammary gland progenitors

Project description:Early lineage segregation of multipotent embryonic mammary gland progenitors

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