Project description:Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal malignany and currently the fourth leading cause of cancer related death worldwide. Circular RNAs (circRNAs) are a kind of novel noncoding RNA with a covalently circular structure arise from the non-canonical splicing of precursor-mRNA(pre-mRNA). To identify circRNAs involved in the progression of PDAC, next-generation sequencing (NGS) was performed in five paired PDAC and normal adjacent tissues. Our results suggest that the differential expressed circRNAs in PDAC tissues and normal adjacent tissues associated with the metastasis of PDAC.
Project description:Lung cancer is the leading cause of cancer-related death worldwide, and non-small cell lung cancer (NSCLC) accounts for approximately 85% of lung cancers. Lymphatic metastasis serves as a predominant NSCLC metastatic route and an essential predictor of patient prognosis. Recently, circular RNA (circRNA) has emerged as critical mediator in various tumor initiation and progression. To identify essential circRNA that involves in the lymphatic metastasis of NSCLC, Next generation sequencing (NSG) was performed in 6 paired NSCLC tissues and normal adjacent tissues (NAT).
Project description:To explore the molecular mechanism underlying NONO-mediated lymphatic metastasis inhibition in bladder cancer, a genome-wide RNA-sequencing was conducted to compare gene expression profiles of UM-UC-3 cells with NONO knockdown and control.
Project description:Circulating tumour cells (CTCs) shed into blood from primary cancers include putative precursors that initiate distal metastases. While these cells are extraordinarily rare, they may identify cellular pathways contributing to the blood-borne dissemination of cancer. Here, we adapted a microfluidic device for efficient capture of CTCs from an endogenous mouse pancreatic cancer model and subjected CTCs to single-molecule RNA sequencing, identifying Wnt2 as enriched in CTCs. Expression of Wnt2 in pancreatic cancer cells suppresses anoikis, enhances anchorage-independent sphere formation, and increases metastatic propensity in vivo. The effect of Wnt2 is correlated with fibronectin upregulation, and it is mediated in part through non-canonical Wnt signaling and suppressed by inhibition of the Map3k7 (Tak1) kinase, an integrator of Wnt, BMP and TGF-beta signaling. In humans, formation of non-adherent tumour spheres by pancreatic cancer cells is associated with upregulation of multiple Wnt genes, and pancreatic CTCs revealed significant enrichment for non-canonical Wnt signaling in 5 of 11 cases. Thus, molecular analysis of CTCs may identify novel therapeutic targets to prevent the distal spread of cancer. Expression profiling of circulating tumor cells in human pancreatic cancer patients support a hypothesis that WNT signaling plays a role in pancreatic cancer metastasis.
Project description:Circulating tumour cells (CTCs) shed into blood from primary cancers include putative precursors that initiate distal metastases. While these cells are extraordinarily rare, they may identify cellular pathways contributing to the blood-borne dissemination of cancer. Here, we adapted a microfluidic device for efficient capture of CTCs from an endogenous mouse pancreatic cancer model and subjected CTCs to single-molecule RNA sequencing, identifying Wnt2 as enriched in CTCs. Expression of Wnt2 in pancreatic cancer cells suppresses anoikis, enhances anchorage-independent sphere formation, and increases metastatic propensity in vivo. The effect of Wnt2 is correlated with fibronectin upregulation, and it is mediated in part through non-canonical Wnt signaling and suppressed by inhibition of the Map3k7 (Tak1) kinase, an integrator of Wnt, BMP and TGF-beta signaling. In humans, formation of non-adherent tumour spheres by pancreatic cancer cells is associated with upregulation of multiple Wnt genes, and pancreatic CTCs revealed significant enrichment for non-canonical Wnt signaling in 5 of 11 cases. Thus, molecular analysis of CTCs may identify novel therapeutic targets to prevent the distal spread of cancer. Expression profiling of primary tumor, circulating tumor cells and ascites in a mouse model of pancreatic cancer suggested WNT signaling plays a role in pancreatic cancer metastasis. Induction of Wnt2 signaling in mouse pancreatic NB508 cells supported the hypothesis.
Project description:We report that MSRA is a potent suppressor of pancreatic cancer metastasis. We performed global RNA sequencing to examine the transcriptome of pancreatic cancer cells that are proficient or deficient of MSRA