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Next generation sequencing facilitates lineage identity of RA-induced and RA/CHIR-induced ESCs

ABSTRACT: To uncover the mechanism that Wnt signaling modulates RA-induced ESC differentiation, we conducted time course RNA-seq analysis during the differentiation. Transcriptome profiles of RA-induced and RA/CHIR-induced ESC differentiation were generated by deep sequencing, in triplicate, using Illumina HiSeq 2000. The RNA-seq data revealed a significant decrease in mesoderm (one of the major source of vascular SMCs) markers and increase in PrE markers in CHIR treated samples, while other lineage markers showed no significant expression, implying a diverging to PrE fate by Wnt activation. Subsequent hierarchical clustering analysis also showed that the gene expression profiles of cells derived from RA induction alone clustered with adult SMCs, while cells derived from RA/CHIR induction gradually clustered to XEN cells with differentiation and was very close to XEN cells at day 16, suggesting that RA/CHIR-induced ESCs differentiated into PrE lineage. This study provided new insights into the importance of RA/Wnt crosstalk in the lineage differentiation of ESCs.

ORGANISM(S): Mus musculus

PROVIDER: GSE123632 | GEO | 2019/12/10

REPOSITORIES: GEO

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Next generation sequencing facilitates lineage identity of RA-induced and RA/CHIR-induced ESCs

Project description:Next generation sequencing facilitates lineage identity of RA-induced and RA/CHIR-induced ESCs

| PRJNA509431 | ENA

PTHRP/Adenylate cyclase promotes parietal whereas Wnt/β-catenin signaling promotes visceral endoderm differentiation of rat XEN cells.

Project description:In this study we showed that rat XEN cells grown in the presence of a GSK3 inhibitor exhibited enhanced formation of cell contacts and decreased motility. In contrast, treatment with forskolin induced the PE formation and epithelial-mesenchymal transition (EMT) in rat XEN cells. Using microarray and real-time PCR assays, we found that VE versus PE formation of rat XEN cells was correlated with change in expression levels of VE or PE marker genes. Similar to forskolin, EMT was prompted upon treatment of rat XEN cells with recombinant parathyroid hormone related peptide (PTHRP), an activator of the cAMP pathway in vivo. Taken together, our data suggest that rat XEN cells are PrE-like cells. The activation of Wnt pathway in rat XEN cells leads to the acquisition of VE characteristics, whereas the activation of the PTHRP/cAMP pathway leads to EMT and the formation of PE. Rat XEN cells were cultured in four different conditions with 3 parallels for each condition: (1-3) without treatments control, (4-6) 2 days treated with CHIR alone, (7-9) 1 day treated with CHIR and 1 day with both CHIR and forskolin, and (10-12) 1 day treated with forskolin alone. In all samples on DAY1 cells were plated, at DAY2 cells were cultured in usual conditions (DMEM F12 medium and 10% Fetal Bovine Serum, both from Sigma) and inhibitor of GSK3 kinase 3 μM CHIR99021 (Axon Medchem) was added in samples 4-9. On DAY3 all cells were cultured in medium with 0.1% serum to exclude the influence of serum and in CONTROL (1-3) cells were cultured without experimental treatments, in CHIR (4-6) cells were further cultured with 3 μM CHIR99021, in CHIR plus FORSKOLIN cells were cultured with 3 μM CHIR99021 and 10μM Forskolin (Sigma), in FORSKOLIN cells were cultured for 1 day with 10 μM Forskolin. On DAY4 RNA was isolated.

2013-02-01 | E-GEOD-42438 | biostudies-arrayexpress

Critical role of FGF, RA, and WNT signaling for otic lineage specification from human PSCs in a 2D/3D-combined differentiation system

Project description:The otic placode, from which the inner ear develops, initially forms as a thickened ectodermal patch adjacent to the dorsolateral hindbrain. Induction of otic placodal cells from human pluripotent stem cells (hPSCs) provides a robust approach to investigation of otic development. However, attempts to recapitulate otic lineage specification from hPSCs by stepwise differentiation methods have had limited success. One possible reason is that the role of signaling pathways in otic cell differentiation is not fully understood. Here, we developed a novel differentiation system involving use of suspension culture (3D floating culture) in combination with signaling factors for generating otic placodal cells via stepwise differentiation of hPSCs. We demonstrate that hPSC-derived pre-placodal cells acquired the potential to differentiate into posterior placodal cells after fibroblast growth factor 2 (FGF2) and retinoic acid (RA) treatment. Subsequent activation of WNT signaling following posterior placode specification induced differentiation of SIX1+/PAX8+/SOX2+ otic placodal cells. qPCR analysis showed that WNT activation increased expression of otocyst markers, including PAX8, PAX2, DLX5 and FBXO2. Moreover, induced otic cells exhibited similar gene expression patterns to the ventral and medial portions of the otocyst that give rise to the sensory epithelium of the inner ear. Collectively, our results indicate a critical role for FGF2, RA, and WNT signaling for the in vitro differentiation of the otic cell lineage from hPSCs. Our new culture system paves the way for improved modeling of early human inner ear development and will be of value to studies on the further differentiation of sensory epithelial cells.

2022-02-01 | GSE175998 | GEO

Biphasic activation of WNT signaling enhances the derivation of midbrain dopamine neurons for translational use [RNA-seq]

Project description:We report a novel midbrain dopamine neuron derivation protocol from human pluripotent stem cells (hPSC)s based on a two-step WNT signaling activation strategy. By comparing next-generation sequencing (NGS) derived transcriptome profiling (RNA-seq) of dopamine neuron differentiated cells derived from hPSC with different concentration of Chir-boosting (day4 – day9) measured at day 11 including hPSC, we find that CHIR-boosting improves expression of midbrain markers such as EN1 while minimizing expression of contaminating posterior (hindbrain) and anterior (diencephalic) lineage markers. Furthermore, gene expression analysis from RNA-seq study confirmed the progressive differentiation and maturation of Boost CHIR treated precursors into mDA neurons by day 30 of differentiation. The protocol presented here is the basis for clinical grade dopamine neuron production and preclinical safety and efficacy studies.

2020-12-18 | GSE162883 | GEO

RA-dependent proximal and distal enhancers’ architecture promotes RA-induced early ESC differentiation

Project description:Retinoic acid (RA) plays a pivotal role in different biological processes including inducing differentiation of embryonic stem cells (ESCs). We first knocked out one or both of RA receptors- Rarα and Rxrα to partially abolish the RA signaling, and then overexpressed one of them separately to hyper activation of RA signaling pathway. By transcriptome analysis, we show that RA signaling effects multi-lineage differentiation, particularly the endoderm, and identify RA signaling target genes, interesting, there are two family cluster genes- Hoxb and Cyp26. Chromosome immunoprecipitation (ChIP-seq) shows that RA induces novel proximal and distal enhancers around the cluster target genes and these enhancers are dependent of RA receptors(Rarα/Rxrα). 4C-seq reveals enhancer-enhancer and enhancer-promoter interactions in their regions and shows a decrease in the relative frequency of contact relative to WT after Rarα/Rxrα-knockout, suggesting Rarα/Rxrα participate in mediating chromatin interaction. We also identify that enhancers significantly maintain expression of RA-induced Hoxb and Cyp26 family genes and regulate multi-lineage marker genes. At the same time, we reveal that disrupting RA-response elements (RAREs) in the enhancer affects the expression of the target gene. Our study provides mechanistic insight into RA-induced early ESC differentiation to endoderm and potential regular regulation of downstream target genes.

2023-06-29 | GSE221992 | GEO

Phosphoproteome of RA-responsive and RA-resistant breast cancer cell lines

Project description:Retinoic acid (RA), the main active vitamin A metabolite, controls multiple biological processes such as cell proliferation and differentiation through genomic programs and kinase cascades activation. Due to these properties, RA has proven anti-cancer capacity. Several breast cancer cells respond to the antiproliferative effects of RA, while others are RA-resistant. However, the overall signaling and transcriptional pathways that are altered in such cells have not been elucidated. Here, in a large-scale analysis of the phosphoproteins and in a genome-wide analysis of the RA-regulated genes, we compared two human breast cancer cell lines, a RA-responsive one, the MCF7 cell line, and a RA-resistant one, the BT474 cell line, which depicts several alterations of the "kinome".

2016-07-05 | PXD004357 | Pride

Phosphoproteome of RA-responsive and RA-resistant breast cancer cell lines

2020-10-15 | PXD005911 | Pride

Expression profiling in RA disease pre and post anti-TNF treatment

Project description:The purpose of this study was (1) to identify novel genes involved in the pathogenesis of Rheumatoid Arthritis (RA) disease, which may provide additional targets for therapeutic intervention and (2) to examine the molecular mechanisms associated with the response to anti-TNF treatment. Microarray analysis of LPS-stimulated whole blood from RA patients pre and post anti-TNF treatment was conducted. This study identified 818 transcripts, differentially expressed in RA patients pre-treatment compared to non-RA control samples. While a number of these genes were associated with RA in previous studies, validating our data, a number of novel genes with possible functions in RA disease were also identified. The number of transcripts (1051) significantly altered post anti-TNF treatment indicates the impact of anti-TNF therapy on systemic gene expression. A number of these transcripts were confirmed to be altered in a larger patient group and may represent potential genetic markers of a patient’s clinical response to anti-TNF treatment. Keywords: Expression profiling in RA disease pre and post anti-TNF treatment

2007-07-07 | GSE7524 | GEO

BMP4 signalling directs primitive endoderm-derived XEN cells to an extraembryonic visceral endoderm identity

Project description:The visceral endoderm (VE) is an epithelial tissue in the early postimplantation mouse embryo that encapsulates the pluripotent epiblast distally and the extraembryonic ectoderm proximally. In addition to facilitating nutrient exchange before the establishment of a circulation, the VE is critical for patterning the epiblast. Since VE is derived from the primitive endoderm (PrE) of the blastocyst, and PrE-derived eXtraembryonic ENdoderm (XEN) cells can be propagated in vitro, XEN cells should provide an important tool for identifying factors that direct VE differentiation. In this study, we demonstrated that BMP4 signalling induces the formation of a polarized epithelium in XEN cells. This morphological transition was reversible, and was associated with the acquisition of a molecular signature comparable to extraembryonic (ex) VE. Resembling exVE which will form the endoderm of the visceral yolk sac, BMP4-treated XEN cells regulated hematopoiesis by stimulating the expansion of primitive erythroid progenitors. We also observed that LIF exerted an antagonistic effect on BMP4-induced XEN cell differentiation, thereby impacting the extrinsic conditions used for the isolation and maintenance of XEN cells in an undifferentiated state. Taken together, our data suggest that XEN cells can be differentiated towards an exVE identity upon BMP4 stimulation, and therefore represent a valuable tool for investigating PrE lineage differentiation. Total RNA isolated in triplicate from XEN stem cell cultures that were untreated (samples 1-3) or treated with BMP4 growth factor (samples 4-6). Total RNA isolated in triplicate from XEN stem cells that were treated with BMP4 and were flow sorted as Afp::GFP-positive (samples 7-9) or Afp::GFP-negative (samples 10-12).

2011-09-13 | E-GEOD-32094 | biostudies-arrayexpress

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