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Mus musculus

ABSTRACT: p53 coordinates Wnt and TGF-β inputs on mesendoderm differentiation genes

PROVIDER: PRJNA288818 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR2086310_1.fastq.gz	Fastqsanger.gz
	SRR2086310_2.fastq.gz	Fastqsanger.gz
	SRR2086320_1.fastq.gz	Fastqsanger.gz
	SRR2086320_2.fastq.gz	Fastqsanger.gz
	SRR2086330_1.fastq.gz	Fastqsanger.gz

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p53 coordinates Wnt and TGF-β inputs on mesendoderm differentiation genes

Project description:The TGF-β superfamily member Nodal triggers mesendoderm differentiation in embryonic stem (ES) cells. This transition however requires cooperating Wnt signaling inputs. Here we report that p53, a powerful tumor suppressor in adult tissues, orchestrates this cooperation. We show that p53, which is released from inhibition as mouse ES cells exit from pluripotency, acts as a direct inducer of Wnt3 expression. Wnt-activated Tcf3 then converges with Nodal-activated Smad transcriptional complexes on mesendoderm specification super-enhancers. p53 and its homolog p73 act redundantly in Wnt induction. When p53 and p73 are depleted, the ES cells fail to secrete autocrine Wnt ligands, Tcf and Nodal-activated Smads fail to bind to mesendoderm gene enhancers, and the cells adopt ectoderm rather than mesendoderm identity. Enforced Wnt3 expression or addition of Wnt3a rescues mesendoderm differentiation in p53/p73-depleted ES cells. Thus, independently of their established role as tumor suppressors that guard genome integrity in mature cells, p53 and p73 serve a primordial role in ES cell differentiation by driving a cooperation of Wnt and TGF-β transcriptional inputs on mesendoderm identity gene enhancers.

2017-01-06 | GSE70486 | GEO

TGF-β/Nodal signaling boosts glucose uptake during mesendoderm differentiation by inducing a transmembrane micropeptide

Project description:TGF-β signaling is a central regulator of early development in metazoans, yet our understanding of the scope of TGF-β signaling’s downstream targets and associated physiological mechanisms in specifying developmentally appropriate cell fates is far from complete. Here, we found that a highly conserved, primitive-streak-specific micropeptide is a direct target of TGF-b/Nodal signaling. This transmembrane micropeptide (NEMEP) is essential for mesendoderm differentiation. Depletion of NEMEP impaired mesendoderm differentiation and caused a significant decrease in glucose uptake, while TGF-β signaling enhances glucose uptake in a NEMEP-dependent manner. Biochemically, we show that NEMEP promotes glucose uptake through its interactions with GLUT1/3. Thus, beyond expanding the scope of known TGF-β signaling targets in early development and showing that this target micropeptide augments the glucose uptake function of major glucose transporters during mesendoderm differentiation, our study provides a clear example for the direct functional impact of altered metabolism on cell fate determination in early embryogenesis.

2021-11-03 | GSE157073 | GEO

Loss of centrosomal gene ALMS1 alters lipid metabolism and the regulation of processes linked to the extracellular matrix.

Project description:In this project we evaluated the proteomic profiling with TGF-β stimuli at 24h in a CRISPR-Cas9 model for ALMS1 gene in hTERT-BJ-5ta cells. Proteomic results showed a majority inhibition of downstream regulated pathways by the TGF-β, associating the protein coding genes (PCG) with processes like TGF- β matrix regulation, epithelial mesenchymal transition (EMT), PI3K/AKT or P53. In conclusion, seems that the depletion of ALMS1 could be inhibiting the signals transduction through the TGF -β and the routes regulated downstream.

2024-01-26 | PXD035708 | Pride

RNA seq of cardiac fibroblasts primary cell lines after stimulation with WNT3a or WNT5a with or without TGFB

Project description:To recognize the influnence of WNT signaling on fibroblasts differentiation first we analyzed transformation of human cardiac fibroblasts caused by TGF-β signaling. Differential gene expression analysis demonstrated that cardiac fibroblasts 72h after treatment with TGF-β showed deregulated expression of 313 genes. We also observed that stimulation with WNT3a resulted in deregulation of 124 genes in TGF-β-treated fibroblasts and in contrast to profound effect of WNT3a on fibroblasts differentiation, treatment with WNT5a upregulated expression of only 2 and downregulated 21 genes in TGF-β-activated cells.

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Human bronchial epithelial cell-derived extracellular vesicles attenuate pulmonary fibrosis through inhibiting TGF-β-WNT crosstalk [RNA-Seq]

Project description:Idiopathic pulmonary fibrosis (IPF) is characterized by devastating and progressive lung parenchymal ﬁbrosis with poor prognosis. An aberrant recapitulation of lung developmental genes including transforming growth factor (TGF)-β and WNT has been widely implicated in the abnormal wound healing process following repetitive alveolar epithelial injury during IPF pathogenesis. Extracellular vesicles (EVs) including exosomes and microvesicles have been shown to carry various bioactive molecules and are involved in a variety of physiological and pathological processes. Here, we demonstrate that human bronchial epithelial cell-derived EVs (HBEC EVs) inhibited TGF-β-induced both myofibroblast differentiation and lung epithelial cellular senescence through attenuating WNT signaling. To ask how HBEC-EVs inhibited TGF-β-induced both myofibroblast differentiation and lung epithelial cellular senescence through attenuating WNT signaling, miRNA RNA-seq of HBEC-EVs was performed.

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Human bronchial epithelial cell-derived extracellular vesicles attenuate pulmonary fibrosis through inhibiting TGF-β-WNT crosstalk [miRNA-Seq]

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Project description:Activin and Wnt signaling are necessary and sufficient for mesendoderm (ME) differentiation of human embryonic stem cells (hESCs). In this study, we report that during the Activin and Wnt induced ME differentiation, Activin/Smad2 induces decrease of the repressive histone modification H3K27me3 by promoting proteasome-dependent degradation of EZH2. As a result, recruitment of the forkhead protein FOXH1 on open chromatin regions integrates the signals of Activin/Smad2 and Wnt/β-catenin to activate the expression of the ME genes including HAS2 and ALDH3A2. Knockdown of HAS2 and ALDH3A2 greatly attenuates ME differentiation. These findings unveil a pathway from extracellular signals to epigenetic modification-mediated gene activation during ME commitment.

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Interaction of Wnt signaling with Smad signaling during myogenic differentiation in mouse myoblast cells

Project description:Wnt/beta-catenin signaling is involved in various aspects of skeletal muscle development and regeneration. Using C2C12 cells, we examined intracellular signaling and gene transcription during myoblast proliferation and differentiation. The results of the present studies suggest that Wnt signaling is interacting with TGF-beta superfamily signaling through Smad activation. Single analysis for each condition (proliferating C2C12 cells, differentiating C2C12 cells, proliferating Wnt4-overexpressing C2C12 subline cells).

2013-06-21 | E-GEOD-40456 | biostudies-arrayexpress

mTORC2-mediated cell-cell interaction promote BMP4-induced WNT activation and mesoderm differentiation

Project description:The mechanistic target of rapamycin complex 2 (mTORC2) is essential for embryonic development but the underlying molecular mechanisms remain unclear. Here we show that disruption of mTORC2 in human embryonic stem cells (hESCs) considerably alters the balance of Rho/Rac signaling and reduces cell adhesion. Although these changes have no clear effect on their self-renewal and the expression of pluripotent markers, they significantly impede BMP-induced activation of canonical WNT genes, leading to impaired mesendoderm differentiation. Direct activation of the downstream WNT pathway by inhibiting GSK3 dramatically improves mesendoderm differentiation in mTORC2-deficient hESCs. Our studies uncover a new mechanism by which mTORC2 regulates cell fate determination and link the intercellular contacts with the activation of WNT genes.

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Extracts from sweet sorghum (Sorghum bicolor), a feedstock for biorefining, suppressed proliferation and elevated apoptosis in human colon cancer stem cells via suppression of Wnt/beta-catenin signaling pathway

Project description:In colorectal cancer, p53 is commonly inactivated, associated with chemo-resistance, and marks the transition from non-invasive to invasive disease. Cancers, including colorectal cancer, are thought to be diseases of aberrant stem cell populations, as stem cells are able to self-renew, making them long-lived enough to acquire mutations necessary to manifest the disease. We have shown that extracts from sweet sorghum stalk components eliminate colon cancer stem cells (CCSC) in a partial p53-dependent fashion. However, the underlying mechanisms are unknown. In the present study, CCSC were transfected with short hairpin-RNA against p53 (CCSC p53 shRNA) and treated with sweet sorghum phenolics extracted from different plant components (dermal layer, leaf, seed head and whole plant). While all components demonstrated anti-proliferative and pro-apoptotic effects in CCSC, phenolics extracted from the dermal layer and seed head were more potent in eliminating CCSC by elevating caspases 3/7 activity, PARP cleavage, and DNA fragmentation in a p53-dependent and p53-independent fashion, respectively. Further investigations revealed that the anti-proliferative and pro-apoptotic effects were associated with decreases in beta-catenin protein levels, and beta-catenin targets cyclin D1, cMyc, and survivin. These results suggest that the anti-proliferative and pro-apoptotic effects of sweet sorghum extracts against human colon cancer stem cells are via suppression of Wnt/beta-catenin pro-survival signaling in a p53-dependent (dermal layer) and partial p53-independent (seed head) fashion. LCMS used to identify phenolic compounds associated with extract activity

2014-05-01 | MTBLS69 | MetaboLights

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