RGC-32 silencing inhibits the expression of Zeb1 and Snail in TGF-β-induced EMT. Conclusion: RGC-32 might be a new metastasis promoting factor for pancreatic cancer and it mediates TGF-β-induced

EMT via MAPK signaling pathways and transcription factors Zeb1 and Snail. Key Word(s): 1. RGC-32; 2. Pancreatic cancer; 3. TGF-β; 4. EMT; Presenting Author: YUFEN ZHOU Additional Authors: LIYA HUANG, LINGXIAO XU, FAN ZHANG, FANG GUO, WEIYAN YAO, YAOZONG YUAN Corresponding Author: YAOZONG YUAN Affiliations: Ruijin Hospital, Shanghai Jiaotong University School of Medicine; Department of Gastroenterology, General Hospital of Ningxia Medical University. Objective: Pancreatic cancer is the eleventh malignant tumor and the fourth leading cause of cancer-related mortalities in the United States. By the time of diagnosis, only 15–25% patient have a chance to undergo resection surgery. Looking for Metabolisms tumor new serum biomarkers to diagnose pancreatic cancer early has become a top priority. ULBP-2 (UL16-binding protein 2) is a family of ULBPs. The ULBPs are ligands for NKG2D/DAP10, an activating receptor expressed by natural killer (NK) cell. MIC-1 (macrophage inhibitory cytokine-1) is a novel family of TGF-β. Both biomarkers are increased check details expression in pancreatic cancer in several cohort studies. The aim of this case-control study is to compare the diagnostic ability

of ULBP-2, MIC-1 and CA19-9. In this study, we also estimate the correlation among different tumor markers with pancreatic cancer metastasis and TNM stage. Methods: The serum sample of pancreatic cancer patients, chronic pancreatitis patients, diabetes patients and age/sex-matched normal persons were collected in Ruijin Hospital during Dec 2008 and Jan 2012. We collected the clinical data of the research objects, including

sex, age, compliant, history of diabetes, history of hypertension, results of liver function tests and classical tumor markers, pathological diagnosis, surgery way and so on. The serum ULBP-2 and MIC-1 levels were determined by using the ELISA kit. Meanwhile, we adopted CA19-9 results of ruijin hospital. Differences in serum levels of target proteins among groups were compared. Area under the ROC 上海皓元 curves (AUCs) were analyzed among serum target proteins. Results: The serum levels of ULBP-2, MIC-1 among all PC patients were significantly higher than those in benign Pancreatic tumor, chronic pancreatitis and healthy controls (p < 0.0001). And the ULBP-2, MIC-1 concentrations were associated with pancreatic cancer progression. The combination of ULBP-2, MIC-1 and CA 199 performed better than each marker alone in distinguishing PC patients from healthy individuals. An analysis of the area under ROC curves showed that ULBP-2 was superior to CA19-9 in discriminating patients with PC from healthy controls, and MIC-1 was superior to CA19-9 in diagnosing early-stage PC. Conclusion: 1.