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Effect of knockdown OFD1 on gene expression in pancreatic cancer cells

ABSTRACT: Effect of knockdown OFD1 on gene expression in pancreatic cancer cells

PROVIDER: PRJNA1190360 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	SRR31487064_1.fastq.gz	Fastqsanger.gz
	SRR31487064_2.fastq.gz	Fastqsanger.gz
	SRR31487065_1.fastq.gz	Fastqsanger.gz
	SRR31487065_2.fastq.gz	Fastqsanger.gz

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Effect of knockdown OFD1 on gene expression in pancreatic cancer cells

Project description:PARP inhibitors (PARPi) have demonstrated efficacy in treating human cancers with BRCA1 or BRCA2 gene mutations, which are present in only a small portion of breast, ovarian, prostate, and pancreatic cancers. In this study, we discovered that OFD1 is highly expressed in pancreatic cancer and is associated with a poor prognosis. Through screening an FDA-approved drug library, we found that OFD1 knockdown synergizes most effectively with PARPi for the treatment of pancreatic cancer cells. To explore the mechanism of OFD1 knockdown and PARP inhibitor-induced synthetic lethality, we knocked down OFD1 in three pancreatic cancer cell lines and performed RNA sequencing analysis of the whole genome to investigate the mechanisms underlying OFD1 inhibition and PARP inhibitor-induced synthetic lethality. In summary, our research will provide insights into the role of OFD1 in pancreatic cancer by revealing changes in the whole-genome expression profile and the underlying mechanisms.

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Pancreatic Cancer HPAF/CD18 cells: Ecd knockdown vs Scrambled

Project description:Purpose: To study the expression and function of a novel cell cycle regulatory protein, human ecdysoneless (Ecd), during pancreatic cancer (PC) pathogenesis. Experimental Design: Immunohistochemical expression profiling of Ecd was done in non-neoplastic normal pancreatic tissues and pancreatic ductal adenocarcinoma lesions (from tissue microarray and Rapid Autopsy program) as well as precancerous PanIN lesions and metastatic organs. To analyze the biological significance of Ecd in PC progression, Ecd was stably knocked down in PC cell line followed by in vitro and in vivo functional assays. Results: Normal pancreatic ducts show very weak to no Ecd expression compared to significant positive expression in PC tissues (mean±SE composite score: 0.3±0.2 and 3.8±0.2 respectively, p<0.0001) as well as in PanIN precursor lesions with a progressive increase in Ecd expression with increasing dysplasia (PanIN-1 to PanIN-3). Analysis of matched primary tumors and metastases from PC patients revealed that Ecd is highly expressed in both primary pancreatic tumor and in distant metastatic sites. Further, knockdown of Ecd suppressed cell proliferation in vitro and tumorigenicity of PC cells in mice orthotopic tumors. Microarray study revealed that Ecd regulates expression of glucose transporter GLUT4 in PC cells and was subsequently shown to modulate glucose uptake, lactate production and ATP generation by PC cells. Finally, knockdown of Ecd also reduced level of pAkt, key signaling molecule known to regulate aerobic glycolysis in cancer cells. Conclusion: Ecd is a novel tumor promoting factor that is differentially expressed in pancreatic cancer and potentially regulates glucose metabolism within cancer cells. Two-condition experiment, Ecd knockdown vs Scrambled cells. Biological replicates: 3 Ecd knockdownl, 3 Scrambled, independently grown and harvested. One replicate per array

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