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Exploring Six2 distal enhancer interactome in developing mouse kidney

ABSTRACT: Exploring Six2 distal enhancer interactome in developing mouse kidney

PROVIDER: PRJNA422453 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6377142_1.fastq.gz	Fastqsanger.gz
	SRR6377142_2.fastq.gz	Fastqsanger.gz
	SRR6377143_1.fastq.gz	Fastqsanger.gz
	SRR6377143_2.fastq.gz	Fastqsanger.gz

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Exploring Six2 distal enhancer interactome in developing mouse kidney

Project description:The Six2 distal enhancer regulates expression of the 60 kb-downstream gene Six2, but does not regulate the Six3 gene which is 70 kb further downstream. CTCF ChIP-Seq and Hi-C data points to a chromatin domain boundary between Six2 and Six3 which may intervene interaction between Six2-DE and Six3. The irradiation-induced Brachyrrhine (Br) mutant allele was found to carry a 320 kb genomic inversion that includes Six2 and Six3, but not Six2DE. This repositioned Six2 under Six3 enhancer control and Six3 under Six2 distal enhancer control. Consistent with this, Six3 is ectopically expressed in Br/+ kidneys and Six2 expression is reduced. To test whether there is a change of interaction between Six2 distal enhancer and Six2 or Six3 promoters, we performed 4C-Seq in E16.5 wildtyp or Br/+ mice nephron-genic zone cells.

2018-01-18 | GSE108102 | GEO

The interactome of Pou5f1 enhancer in mouse embryonic stem cells

Project description:We report the application of enyzme-based 4C-Seq technique for exploring Pou5f1 enhancer interactome in mouse ES cells. We explored the interactome of Pou5f1 upstream enhancer in mouse ES cells by using an enzyme digestion based 4C-Seq protocol. The interactome is involved in gene active regulation.

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Exploring the interactome of human METTL9

Project description:Exploring the interactome of the human putative methyltransferase enzyme METTL9.

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Gene expression profiling of Six2-positive nephron progenitors from mouse embryo

Project description:Nephron progenitors in the embryonic kidney propagate while generating differentiated nephrons. However, the progenitors in mice terminally differentiate shortly after birth. We defined culture conditions to selectively propagated nephron progenitors in vitro in an undifferentiated state. To understand how expression profiles of Six2+ cells changed during culture in vitro compared with in vivo, we performed microarray analysis of Six2+ cells at E11.5 (starting material) and P0 (experiencing 8 days in vivo), and cultured Six2+ cells at E11.5 for 8 days or 19 days. Microarray analysis were performed with isolated Six2-positive nephron progenitors from transgenic mice embryo at E11.5 or P0, and cultured E11.5 Six2+ cells for 8 or 19 days in conditioned media. P0 non-progenitors represent Six2-GFP-negative cells at P0.

2016-04-14 | E-GEOD-79024 | biostudies-arrayexpress

Genome-wide maps of Six2 and b-catenin in mesenchymal nephron progenitors

Project description:Self-renewing undifferentiated nephron progenitors express Six2, a transcription factor that is required for their maintenance as undifferentiated progenitors. Differentiation of nephron progenitors is triggered by Wnt/b-catenin signaling. In order to understand how Six2 and Wnt signaling counteract each other, we performed ChIP-seq of Six2 and b-catenin in mesenchymal nephron progenitor cells. Nephron progenitors were FACS-isolated from BAC transgenic Six2GFPcre-positive embryonic kidneys at E16.5. For Six2 ChIP, freshly FACS isolated Six2+ cells were used. For b-catenin ChIP, FACS isolated Six2+ cells were aggregated by centrifugation at 850g for 5min and incubated in 10%FBS/DMEM containing 4uM BIO for 24hrs.

2012-09-11 | E-GEOD-39837 | biostudies-arrayexpress

RNA-seq Analysis in 4T07 Control (4T07-CTL) and Six2 Overexpression (4T07-Six2) cells

Project description:To determine the molecular mechanisms by which Six2 regulates metastatic colonization, we performed RNA-seq analysis on murine triple-negative 4T07 Control (4T07-CTL) and Six2 overexpressing (4T07-Six2) cells. Using both targeted and unbiased gene signature analyses, we found that Six2 differentially regulates gene signatures associated with stemness. Additionally, we confirmed that in several triple-negative breast cancer (TNBC) models, Six2 enhanced the expression of genes (identified as among the highest upregulated genes in response to Six2 overexpression) associated with embryonic stem cell programs. When combined with our in vitro and in vivo stemness-associated phenotypic assays, these data suggest that Six2 may play a similar role in mediating stemness characteristics during tumor progression as it does during development, and that this role may allow it to mediate late-stage metastasis by enhancing the ability of cells to self-renew and survive at secondary sites.

2020-01-30 | GSE123489 | GEO

The interactome of Pou5f1 enhancer in mouse embryonic stem cells

Project description:We report the application of enyzme-based 4C-Seq technique for exploring Pou5f1 enhancer interactome in mouse ES cells.

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Chromatin remodelers interact with Eya1 and Six2 to control nephron progenitor cell self-renewal maintenance

Project description:Eya1 interacts with Six1/2 to induce nephron fate and promote nephron progenitor self-renewal. Haploinsufficiency for these genes in humans causes kidney agenesis or hypoplasia. However, how the Eya1-centered network operates remains elusive. Here we identify Eya1's interacting factors via mass-spectrometry and show that Eya1 and Six2 interact with Brg1-based SWI/SNF chromatin-remodeling complex in the kidney. Depletion of Brg1 results in lack of metanephric mesenchyme and depletion of nephron progenitor cells, which is linked to loss of Eya1 expression. Transcriptional profiling reveals conspicuous downregulation of the proto-oncogene Pbx1 and the Dchs1/Fat4 signaling but premature upregulation of a large subset of genes for podocyte lineages and aberrant activation of oncogenic factors in Brg1-deficent cell. ChIP-seq identifies Brg1-occupancy to enhancers at Pbx1 to a distal enhancer of Eya1 that drives nephron progenitor-specific expression. We demonstrate Six2-dependent Brg1 enrichment to the proximal-promoter of Mycn and two distal enhancers of Pbx1, all of which govern nephron progenitor-specific expression in response to binding to Six2. Together, our results suggest a possible mechanism through which the functional specificity of Brg1-BAFs and Eya1-Six2 in cell cycle regulation and self-renewal of the nephron progenitors may be in part achieved.

2021-10-01 | GSE185050 | GEO

SWI/SNF chromatin remodelers target enhancers via interaction with Eya1 and Six2 to specify metanephric fate and maintain nephron progenitor pool

Project description:Eya1 is a critical regulator for establishing nephron fate and acts upstream of Six2. However, how Eya1-centered network operates remains elusive. Here we identified Eya1's interacting factors via mass-spectrometry and show that Eya1 and Six2 interact with Brg1-based SWI/SNF chromatin-remodeling complex in the kidney. Brg1 specifies the nephron fate and regulates Eya1 expression through binding to multiple cis-regulatory-elements. In the nephron-progenitors, Brg1/Six2 co-occupy cis-regulatory-elements at key loci and Brg1-recruitment to many of these regions is disrupted in the absence of Six2. We demonstrate Six2-dependent Brg1-occupancy to Mycn promoter and two distal enhancers of Pbx1, all of which direct nephron-progenitor-specific expression in response to binding to Six2. RNA-seq analysis reveals that depletion of Brg1 leads to upregulation of genes for podocyte-lineages and aberrant activation of cell-death inducing factors. Together, this study highlights an essential function of the Brg1-BAFs in cooperation with Eya1/Six2 in enhancer-mediated regulation of gene expression in the nephron-progenitors.

2023-10-12 | GSE159483 | GEO

Transcriptional responses in SIX2 nephron progenitor cells following mitochondrial complex III subunit 7 (Qpc) inactivation

Project description:To identify novel transcriptional targets following Qpc inactivation. We deleteted Qpc in SIX2 nephron progenitor cells using a Six2-eGFP/cre BAC transgene. We compared SIX2-expressing progenitors from Six2-Qpc-/- kidneys with control (Six2-Qpc+/-) embryonic kidneys at E18.5.

2022-06-29 | GSE158299 | GEO

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