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ShRNA screening analysis of breast cancer

ABSTRACT: shRNA screening analysis of breast cancer

PROVIDER: PRJNA453539 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR7062990.fastq.gz	Fastqsanger.gz
	SRR7063000.fastq.gz	Fastqsanger.gz
	SRR7063010.fastq.gz	Fastqsanger.gz
	SRR7062991.fastq.gz	Fastqsanger.gz
	SRR7063001.fastq.gz	Fastqsanger.gz

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shRNA screening analysis of breast cancer

Project description:Background: We searched triple negative breast cancer (TNBC) specifically expressing candidates for target therapy. Methods: High expressing genes in three TNBC cell lines compared to three non-TNBC cell lines were evaluated by using RNA sequencing (log2 ratio>5, q<0.05). By integrating the shRNA library screening and public gene expression databases, we identifyied candidates for therapeutic targets. The expression significance of the candidates was examined by using immunohistochemistry of 248 clinical breast cancer patients. Results: One hundred seventy one genes were detected as highly expressed genes in TNBC cell lines than non-TNBC cell lines, and 13 genes were picked up as candidates not expressing in non-cancerous tissues. Integrated analysis with shRNA screening identified three candidates as TBNC specific molecular targets. Protein staining were stronger in breast cancer tissues, especially TNBC, than in the normal tissues.

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Project description:Frequent loss of heterozygosity (LOH) at 11q22-23 in breast cancer strongly suggests that this region contains a tumor suppressor gene, yet to be identified. We and others have shown Yes-associated protein (YAP), which is located at 11q22.2, transactivates the p53 family member p73 upon DNA damage, suggesting a tumor suppressive function for YAP. Our analysis of breast tumor tissues by immunohistochemistry (IHC) showed loss of YAP protein expression in great portion of breast cancers. We used microarray to look at the targte genes regulated by YAP in normal breast luminal cell and breast cancer cell lines. Experiment Overall Design: We generated stable cell lines by introducing control vector(pRS-IRES-GFP/pmig) or YAP shRNA(pRS-IRES-GFP-YAP/pmig-YAP) in a normal breast luminal cell line 1089 luminal and breast cancer cell lines MDA MB231. RAN was extracted and hybridized on Affymetrix microarrays.We looked for new target genes regulated by YAP in normal breast luminal cell and breast cancer cell lines.

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down-regulation of dermcidin by shRNA in breast cancer cell line MDA-MB-361

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