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Genome wide map of Tfcp2l1 binding sites from mouse kidney

ABSTRACT: We identified Tfcp2l1 binding sites in mouse kidney using Chromatin Immunoprecipitation followed by high-throughput sequencing (ChiP-Seq)

ORGANISM(S): Mus musculus

PROVIDER: GSE87752 | GEO | 2017/06/19

SECONDARY ACCESSION(S): PRJNA347358

REPOSITORIES: GEO

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Identify genomic binding sites of Tfcp2l1 in mouse embryonic stem cells grown in 2i medium

Project description:Mouse embryonic stem cells (ESCs) grown in the 2i (an ERK inhibitor, PD0325901, and a GSK-3b inhibitor, CHIR99021) mimic pluripotent epiblasts in preimplantation blastocysts. Tfcp2l1 is a transcription factor highly expressed in ESCs grown in the 2i medium, suggesting that it plays in important role in ESC biology. To search for the putative role(s) of Tfcp2l1 in ESCs, we plan to use an integrated genomic approach--combing RNA-seq and ChIP-seq--to identify the direct targets of Tfcp2l1 in ESCs. ChIP-seq is used to identify the genomic bindings sites of Tfcp2l1 in ESCs grown in the 2i medium.

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Identification of Tfcp2l1 target genes in the mouse kidney

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ChIPseq analysis of changes in binding of TFCP2L1 antibody in B16F0 cells in response to SX-682 treatment.

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Identification of CDK1 phosphorylation of TFCP2L1 from murine embryonic stem cells and bladder cancer cells

Project description:Molecular programs involved in embryogenesis are frequently upregulated in oncogenic dedifferentiation and metastasis. However, their precise roles and regulatory mechanisms remain elusive. Here, we showed that CDK1 phosphorylation of TFCP2L1, a pluripotency-associated transcription factor, orchestrated pluripotency and cell-cycling in embryonic stem cells (ESCs) and was aberrantly activated in aggressive bladder cancers (BCs). In murine ESCs, the protein interactome and transcription targets of Tfcp2l1 indicated its involvement in cell-cycle regulation. Tfcp2l1 was phosphorylated at Thr177 by Cdk1, which affected ESC cell-cycle progression, pluripotency, and differentiation. LC-MS was used to characterize thr177 phosphorylation in TFCP2L1 protein obtained by IP experiment and kinase assay. The CDK1-TFCP2L1 pathway was activated in human BC cells, stimulating their proliferation, self-renewal, and invasion. Lack of TFCP2L1 phosphorylation impaired the tumorigenic potency of BC cells in a xenograft model. In patients with BC, high co-expression of TFCP2L1 and CDK1 was associated with unfavorable clinical characteristics including tumor grade, lymphovascular and muscularis propria invasion, and distant metastasis and was an independent prognostic factor for cancer specific survival. These findings demonstrate the molecular and clinical significance of CDK1-mediated TFCP2L1 phosphorylation in stem-cell pluripotency and in the tumorigenic stemness features associated with BC progression.

2019-11-08 | PXD015635 | Pride

TFCP2L1 promotes GPX4-mediated ferroptosis to inhibit breast cancer cell proliferation and metastasis via the PI3K/AKT signaling pathway

Project description:Breast cancer represents the most prevalent form of malignant tumors among women. Despite the existence of numerous therapeutic methods, a significant portion of patients face a poor prognosis, highlighting the urgency in identifying new remedial targets. Here, we for the first time demonstrated that the CP2 family member TFCP2L1, a classical marker of embryonic stem cell maintenance, as a tumor suppressor in breast cancer. Patients with breast cancer have poorer prognoses when TFCP2L1 is expressed highly. Consistently, the expression of TFCP2L1 is higher in normal breast cells than those in breast cancer cell lines. Gain- and loss-of-function and xenograft tumor assay showed that overexpression of TFCP2L1 significantly inhibited both the proliferation and migration of breast cancer cells in vivo and in vitro. Conversely, the knockdown of TFCP2L1 promoted the proliferation and migration of breast cancer cells. Mechanistically, we found that TFCP2L1 suppresses breast cancer progression by directly inhibiting the expression of glutathione peroxidase 4 (GPX4), a key regulator of ferroptosis. Therefore, inhibition of GPX4 by RSL3, an inducer of ferroptosis was able to promote the function of TFCP2L1 in breast cancer cells. On the other hand, transcriptome high-throughput exhibited that TFCP2L1 negatively regulated the activity of PI3K/AKT signaling pathway. Administration of SC79, an AKT activator, was capable of partially restoring the negative effects of TFCP2L1 on GPX4 transcription. Together, TFCP2L1 functions by directly or indirectly regulating GPX4-mediated ferroptosis, and may serve as a novel biomarker and potential therapeutic target for breast cancer.

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Identification of Arabidopsis thaliana PRR9 regulated clock components and circadian outputs through genome-wide binding sites analysis

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Identify Tfcp2l1-regulated genes in mouse embryonic stem cells grown in 2i medium

Project description:Mouse embryonic stem cells (ESCs) grown in the 2i (an ERK inhibitor, PD0325901, and a GSK-3b inhibitor, CHIR99021) mimic pluripotent epiblasts in preimplantation blastocysts. ESCs grown in FBS containing medium are more heterogenous in morphology and expression of stem cell factors. Tfcp2l1 is a transcription factor highly expressed in ESCs grown in the 2i medium, suggesting that it plays in important role in ESC biology. To search for the putative role(s) of Tfcp2l1 in ESCs, we plan to use an integrated genomic approach--combing RNA-seq and ChIP-seq--to identify the direct targets of Tfcp2l1 in ESCs. RNA-seq is used to identify the transcripts regulated by Tfcp2l1 in ESCs grown in the 2i medium.

2021-03-01 | GSE159937 | GEO

Genome-wide map of SIX2 and SIX1 binding in human embryonic kidney cortex

Project description:Nephron endowment is determined by the self-renewal and induction of a nephron progenitor pool established at the onset of kidney development. In the mouse, the related transcriptional regulators Six1 and Six2 play non-overlapping roles in nephron progenitors. Transient Six1 activity prefigures, and is essential for, active nephrogenesis. In contrast, Six2 maintains later progenitor self-renewal from the onset of nephrogenesis. We compared Six2’s regulatory actions in mouse and human nephron progenitors by chromatin immunoprecipitation followed by DNA sequencing (ChIP-seq). Surprisingly, SIX1 was identified as a SIX2 target unique to the human nephron progenitors. Further, RNA-seq and immunostaining revealed overlapping SIX1 and SIX2 progenitor activity in the 16 week human fetal kidney. Human SIX1 ChIP-seq revealed a similar set of targets to SIX2, and predicted both factors bind DNA through an identical recognition site. In contrast to the mouse where Six2 binds its own enhancers but doesn’t interact with DNA around Six1, both human SIX1 and SIX2 bind homologous SIX2 enhancers and putative enhancers positioned around SIX1. Transgenic analysis of a putative human SIX1 enhancer in the mouse revealed a transient, mouse-like, pre-nephrogenic, Six1 regulatory pattern. Together, these data demonstrate a divergence in SIX-factor regulation between mouse and human nephron progenitors. In the human, an auto/cross-regulatory loop drives continued SIX1 and SIX2 expression during active nephrogenesis. In contrast, the mouse establishes only an auto-regulatory Six2 loop. It is tempting to speculate that differential SIX-factor regulation may contribute to species differences in the duration of progenitor programs and nephron output.

2016-01-31 | GSE73865 | GEO

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