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Expression data from gastric cancer cell line HGC27 after knockdown of SNAIL

ABSTRACT: Expression data from gastric cancer cell line HGC27 after knockdown of SNAIL

PROVIDER: PRJNA608543 | ENA |

REPOSITORIES: ENA

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Expression data from gastric cancer cell line HGC27 after knockdown of SNAIL

Project description:SNAIL, which is a key factor in EMT, has high expression levels in the gastric spheres. To investigate SNAIL-regulated genes, we knocked down this gene in the gastric cancer cell line HGC-27 and compared the gene expression of these cells with those of the parental cells by microarray.

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Overexpression of Snail is associated with lymph node metastasis and poor prognosis in patients with gastric cancer

Project description:Epithelial-mesenchymal transition (EMT) is in the highlights as a significant role in tumor progression and invasion. Snail was known as the one of regulators of EMT in various malignant tumors. The aim of this study was to investigate the effect of Snail on invasiveness/migratory ability of gastric cancer cell lines and clinicopathological and prognostic significance of Snail over-expression using immunohistochemistry in tissue microarray of 314 gastric adenocarcinomas (GC). Differential gene expression in Snail over-expressed GC was investigated using cDNA microarray analysis. Silencing of Snail by ShRNA induced decreased of invasion, migration of gastric cancer cell lines. In contrast, over-expression of Snail induced increased invasiveness and migratory ability of gastric cancer cell lines in accordance increase of VEGF and MMP11. Furthermore, the over-expression of Snail (≥75% nuclear staining of Snail) was significantly associated with tumor progression (p<0.0001), lymph node metastases (p=0.002), lymphovascular invasion (p=0.002), and perineural invasion (p=0.002) in 314 GC patient. Snail over-expression was also associated with poor prognosis (shorter survival) in GC patients (p=0.023). cDNA microarray revealed 213 differential expressed genes in Snail over-expressed GC tissues, including genes related to metastasis, invasion. Based on above results, it was suggested that Snail plays a significant role in invasiveness/migratory ability of GCs. In addition, Snail might be used to predictive biomarker for evaluation of prognosis or aggressiveness in GCs.

2012-05-18 | GSE38024 | GEO

Overexpression of Snail is associated with lymph node metastasis and poor prognosis in patients with gastric cancer

Project description:Epithelial-mesenchymal transition (EMT) is in the highlights as a significant role in tumor progression and invasion. Snail was known as the one of regulators of EMT in various malignant tumors. The aim of this study was to investigate the effect of Snail on invasiveness/migratory ability of gastric cancer cell lines and clinicopathological and prognostic significance of Snail over-expression using immunohistochemistry in tissue microarray of 314 gastric adenocarcinomas (GC). Differential gene expression in Snail over-expressed GC was investigated using cDNA microarray analysis. Silencing of Snail by ShRNA induced decreased of invasion, migration of gastric cancer cell lines. In contrast, over-expression of Snail induced increased invasiveness and migratory ability of gastric cancer cell lines in accordance increase of VEGF and MMP11. Furthermore, the over-expression of Snail (?75% nuclear staining of Snail) was significantly associated with tumor progression (p<0.0001), lymph node metastases (p=0.002), lymphovascular invasion (p=0.002), and perineural invasion (p=0.002) in 314 GC patient. Snail over-expression was also associated with poor prognosis (shorter survival) in GC patients (p=0.023). cDNA microarray revealed 213 differential expressed genes in Snail over-expressed GC tissues, including genes related to metastasis, invasion. Based on above results, it was suggested that Snail plays a significant role in invasiveness/migratory ability of GCs. In addition, Snail might be used to predictive biomarker for evaluation of prognosis or aggressiveness in GCs. 48 primary gastric adenocarcinoma fresh frozen tissues were used for microarray. All the tissues were obtained after curative resection after pathologic confirm at Pusan National University Hospital (PNUH, Busan, Korea) and Cheonnam University Hospital (CNUH, Cheonnam, Korea). Microarray experiment and data analysis were done at Cancer research institute, PNUH, Busan, Korea.

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Project description:We used microarrays to study the changes in the transcriptional profile upon Snail knockdown in murine lung adenocarcinomas

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Gene expression profile of HGC27 gastric cancer cell p53 KO and KD

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Project description:The transcription factor Snail has been proposed to mediate epithelial-to-mesenchymal transition (EMT) and confer mesenchymal invasive phenotype to epithelial cancer cells To analyze the molecular effects of ectopic Snail expression on an epithelial breast cancer cell line, gene expression profiles of MCF-7 cells transfected to overexpress Snail-6SA variant (MCF-7-Snail) and MCF-7 cells transfected with control plasmid (MCF-7-control) were compared. Development of the cell lines has been previously reported by Zhou et al. (PMID: 15448698).

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