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ChIP-DSL H20K promoter array from human gastric cancer cells MKN28 with Sox2 overexpression

ABSTRACT: The transcription factor Sox2 inhibits human gastric cancer growth and activates Sox2-related tumor surpressive genes in human gastric cancer cells. Conditional Sox2-overexpression in cells with a low Sox2 level demonstrated that the Sox2-regulated tumor surpressive genes demand on an enhanced Sox2 activity for better expression to work in human gastric cancer. Chromatin immunoprecipitation (ChIP) of Sox2 together with chromatin profiling by ChIP-on-chip analysis demonstrated that Sox2 directly activates the chromatin at promoters or putative enhancers of Sox2 target genes.

ORGANISM(S): Homo sapiens

PROVIDER: GSE45427 | GEO | 2013/05/22

SECONDARY ACCESSION(S): PRJNA193701

REPOSITORIES: GEO

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ChIP-DSL H20K promoter array from human gastric cancer cells MKN28 with Sox2 overexpression

Project description:The transcription factor Sox2 inhibits human gastric cancer growth and activates Sox2-related tumor surpressive genes in human gastric cancer cells. Conditional Sox2-overexpression in cells with a low Sox2 level demonstrated that the Sox2-regulated tumor surpressive genes demand on an enhanced Sox2 activity for better expression to work in human gastric cancer. Chromatin immunoprecipitation (ChIP) of Sox2 together with chromatin profiling by ChIP-on-chip analysis demonstrated that Sox2 directly activates the chromatin at promoters or putative enhancers of Sox2 target genes. Transcription factor Sox2 promoter array in MKN28 cells with Sox2 overexpression.

2013-05-22 | E-GEOD-45427 | biostudies-arrayexpress

Human gastric cancer cells MKN28 gene expression results: MKN28 cells vs. MKN28 cells with transcription factor Sox2 overexpression

Project description:Gene expression profiling of gastric cancer cells MKN28 infected with Sox2 lentivirus comparing with MKN28 infected with control lentivirus

2013-05-22 | GSE45391 | GEO

Human gastric cancer cells MKN28 gene expression results: MKN28 cells vs. MKN28 cells with transcription factor Sox2 overexpression

Project description:Gene expression profiling of gastric cancer cells MKN28 infected with Sox2 lentivirus comparing with MKN28 infected with control lentivirus Transfected cell lines, MKN28-Sox2 vs. MKN28-NC

2013-05-22 | E-GEOD-45391 | biostudies-arrayexpress

Identification the Expression of Sox2 in Colorectal Cancer Tissues

Project description:Sox2 has been studied in several types of human solid tumors. The investigators found that Sox2 had higher expression level in colorectal cancer and metastatic tissues than normal tissues. So the investigators assumed that whether Sox2 plays an important role in the progression and migration of colon cancer.

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Sox2 suppresses gastric tumorigenesis in mice [CHIP-seq]

Project description:Purpose: Sox2 expression marks gastric stem and progenitor cells, raising important questions regarding the genes regulated by Sox2 and the role of Sox2 itself during stomach homeostasis and disease. The goal of this study is to determine the function of and the genes regulated by Sox2 in the stomach. Methods: Sox2 ChIP-enriched DNA and input DNA was isolated from gastric glands of adult antrum from Sox2 KO and Sox2 WT mice. DNA was purified and genomic libraries were prepared as described (Sulahian et al., 2014), using four micrograms of goat anti-SOX2 (AF2018, R&D). Libraries were sequenced (50 bp, single-end reads) on an Illumina Hi-Seq 2000 instrument. Results: Sox2 is dispensiable for gastric stem cell self-renewal and epithelial homeostasis, however modulates the expression of wnt, intestinal and cancer related genes Examination of Sox2 targets in the stomachs of Sox2 WT and Sox2 KO mice.

2016-08-04 | E-GEOD-83965 | biostudies-arrayexpress

Stem cell factor Sox2 regulates the tumorigenic potential in human gastric cancer cells

Project description:Gastric cancer is still one of the most common causes of cancer-related death worldwide, which is mainly attributable to late diagnosis and poor treatment options. Infection with H. pylori, different environmental factors and genetic alterations are known to influence the risk of developing gastric tumors. However, the molecular mechanisms involved in gastric carcinogenesis are still not fully understood, making it difficult to design targeted therapeutic approaches. Aberrant expression of the specific gastric differentiation marker Sox2 (sry-related HMG box 2) has been observed in stomach cancer. However, the role of Sox2 in gastric tumors has not been well established to date. To elucidate the role of Sox2 in gastric tumorigenesis, Sox2 transcriptional activity was blocked in AZ521 cells. Interestingly, inhibition of Sox2 reduced cell proliferation and migration, increased apoptosis and induced changes in cell cycle. Blocking of Sox2 also reduced the tumorigenic potential of AZ521 cells in vivo. In addition, correlation of Sox2 expression and proliferation was observed in a subset of human gastric tumours. Finally, target genes of Sox2 were for the first time identified by RNA microarray in gastric cancer cells. Taken together, the results presented here indicate that Sox2 controls several aspects related to gastric cancer development and progression by regulating the expression of members of important signalling pathways. These findings could provide new therapeutic options for a subset of gastric cancers exhibiting Sox2 deregulation. Inducible dnSox2 in AZ521 cells, 4 timepoints with/without induction.

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Stem cell factor Sox2 regulates the tumorigenic potential in human gastric cancer cells

2013-12-31 | GSE42937 | GEO

Sox2 suppresses gastric tumorigenesis in mice [CHIP-seq]

2016-08-04 | GSE83965 | GEO

Genes regulated by SOX2 overexpression in gastric cancer cells

2011-02-02 | GSE23589 | GEO

Genes regulated by SOX2 overexpression in gastric cancer cells

Project description:To identify candidate downstream target genes of SOX2 in gastric cancer cells, we transiently expressed exogenous SOX2 in a gastric cancer cell line NUGC3 and analyzed significant changes of gene expression. NUGC3 cells were infected with the optimum 20 MOI (infectious units/cell) of SOX2- or control GFP-expressing adenoviral vectors. At 72 h after infection, the cells were harvested for cDNA microarray analysis.

2011-02-02 | E-GEOD-23589 | biostudies-arrayexpress

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