Global enrichment of FoxM1 bound chromatin in Huh7 cell line
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA736049 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR14760692.fastq.gz | Fastqsanger.gz | |||
| SRR14760693.fastq.gz | Fastqsanger.gz | |||
| SRR14760694.fastq.gz | Fastqsanger.gz |
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Project description:FoxM1 is an oncogenic transcription factor that has been linked to the genesis and progression of cancer. FoxM1 not only upregulates cell proliferation and survival genes, but also represses tumor suppressor genes according to our prior study. This ChIP-Seq is a part of our endeveavor to creat a map of the FoxM1 occupied chromatin area in order to better understand the FoxM1 role in tumorigenesis. We present the results of a high-throughput profile of Chromatine alteration in mammalian cells using ChIP-Seq. We developed genome-wide chromatin-state maps of the human HCC cell line Huh7 by extracting approximately 3 billion bases of sequence from chromatin immunoprecipitated DNA in approxiamtoly 33 million reads. We discovered that FoxM1 successfully distinguishes between expressed, stably repressed and poised genes and therefore reflect cell state and lineage potential. This research lays the groundwork for using extensive chromatin profiling to characterize the genes controlled by the oncogeneic transcription factor FoxM1 and their role in the development of FoxM1-induced cancers.
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Project description:FOXM1 is a vital transcription factor associated with proliferation, expressed extensively and dynamically throughout the cell cycle. Its overexpression in mycosis fungoides correlates with a poor prognosis. However, the specific role of FOXM1 in the pathogenesis of mycosis fungoides remains unclear. In this study, we silenced FOXM1 in the MyLa cell line, which is representative of mycosis fungoides, by transducing it with a lentivirus vector containing shRNA targeting the FOXM1 gene. By comparing MyLa cells transduced with scrambled shRNA as the control, we observed distinct gene expression profiles, notably a decrease in the expression of cell cycle-related genes and an increase in apoptosis-related genes. These changes align with the phenotypic alterations of MyLa cells following FOXM1 silencing.
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Project description:FoxM1, a mammalian Forkhead Box M1 protein, is known as a typical proliferation-associated transcription factor that regulates of G1/S and G2/M transition in the proliferating cells. However, the in vivo function of FoxM1 in adult stem cells remains unknown. Here, we found that FoxM1 is highly expressed in hematopoietic stem cells (HSCs) and is essential for maintaining quiescence and self-renewal of HSCs in vivo. FoxM1-deficient mice developed leukopenia, thrombocytopenia and neutropenia with an approximately 6-fold decrease in HSC pool size, which is associated with a failure of G0 cell cycle regulation and increased cell cycling in HSCs. FoxM1 absence did not affect lineage commitment of HSCs and progenitors. However, FoxM1 loss significantly reduced the repopulating capacity and self-renewal of long-term HSC in a cell-autonomous manner. Mechanistically, FoxM1 loss markedly down-regulates the expression of orphan nuclear receptor Nurr1, known to regulate HSC quiescence. We found that FoxM1 directly bound the promoter region of Nurr1 and induced transcriptional activity of Nurr1 promoter in vitro, and forced expression of Nurr1 rescued FoxM1-deletion-induced G0 loss of HSC-enriched population in vitro. Thus, our studies show a previously unrecognized role of FoxM1 as a critical regulator of HSC quiescence and self-renewal by controlling Nurr1-mediated pathways. The Hematopoietic Stem Cells (HSCs) were sorted from FoxM1[fl/fl] and Tie2-Cre FoxM1[fl/fl] mice, then amplified with Ovation Pico WTA System V2 before microarray analysis. There are 3 samples from FoxM1[fl/fl]mice and 3 samples from Tie2-Cre FoxM1[fl/fl] mice.
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Project description:Chromatin immunoprecipitation using anti-FOXM1 (Santa Cruz Biotechnology: sc- 502X) antibodies in an OE33 cell line
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Project description:the impact of Zn supplementation was evaluated in a xenograft mouse model of HCC, with subsequent analysis of tumor gene expression profiles The aim was to compare the effects of Zinc supplementation in a in vivo model of HuH7 xenograft mice treated with Zinc Acexamate vs vehicle-treted mice and in HuH7 cell line between different concentrations of Zinc Acexamate
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Project description:Purpose: To gain futher insight into how FOXM1 regulates the proliferative of neural progenitors ,RNA-seq was used to analyze the genome-wide changes resulting from the cerebral cortices of E15 FOXM1 conditional knock in mice and littermate wild-type. Methods: Total RNA from E15 telencephalic tissue of wild-type(WT) and FOXM1f/+;Nestin-Cre mice was extracted. Specifically, Agilent 2100 Bioanalyze was used to quality controlled and quantified. then, total RNA was converted to cDNA and bound the library. RNA-sequencing analysis was used by the Illumina HiSeq 2500 platform in Annoroad Genomics Results: Approximately one thousand transcripts showed differential expression between the wild-type(WT) and FOXM1f/+;Nestin-Cre mice brain cortex, with a fold change ≥1.5 and p value <0.05.Geneontology analysis of the up-regulated genes showed obvious enrichment of biological processes related to development and proliferation.The down-regulated genes exhibited enrichment of biological processes related to the negative regulation of cell proliferation and developmental process. These results reflected human FOXM1 plays a role in cortex development. Conclusions: RNA-seq based transcriptome characterization would provide a overall understanding how FOXM1 gene contribute to brain cortical development.
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Project description:Analysis of Huh7 hepatocellular carcinoma (HCC) cells depleted for potassium channel KCa3.1, the intermediate conductance calcium-activated potassium channel. Result provide insight into the role of KCa3.1 in the carcinogenesis of HCC. We used microarrays to detail the gene expression differences between KCa3.1 knockdown and negative control in Huh7 HCC cells.
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