01). The expression of Smac protein in the cells increased from 0.097 ± 0.015 to 0.626 ± 0.058 after transfected by si-Livin1 (P < 0.01). The expression of Livin correlated negatively with the expression of Smac in Caco-2 cells (P < 0.05). Conclusion: Livin gene silenced by siRNA induces growth suppression and apoptosis of Caco-2 cells, which could increase the expression of Smac protein in Caco-2 cells. Livin and Smac gene may be the key factors of colorectal carcinoma cell apoptosis signaling pathway. Key Word(s): 1. Livin; 2. Smac; 3. Colorectal carcinoma; 4.
RNA interference; Presenting Author: WEIZHONG YAN Additional Authors: YANQIU LIU, LIHONG JIA, XIANGHUA PIAO, HONGYAN ZHUO Corresponding Author: WEIZHONG YAN Affiliations: Jili center hospital Objective: To study the expression of Ang-1, Ang-2 and receptorTie-2 R788 clinical trial in colorectal cancer tissue, and explore C646 the rela-tionship between the expression of Ang-1,
Ang-2 and receptor Tie-2 with the histological differentiation degree, provide new targets forthe clinical treatment of colorectal cancer1. Methods: The expression of Ang-1, Ang-2 and receptorTie-2 in 64 cases of colorectal cancertissueswere detected with immunohistochemistry SP method, the expression of Ang-1, Ang-2 and receptor Tie-2 mRNA in colorectalcancer tissueswere detected with RT-PCR1. Results: The expression of Ang-1, Ang-2 and receptorTie-2 in colorectal cancer tissuesshowed that the lower the tumor histological differentiation degree, the higher expression of the protein and RNA (P < 0105) 1. Conclusion: The expression degree of Ang-1, Ang-2 and receptor Methane monooxygenase Tie-2 has positive relationwith the progression of colorectal cancer1. Key Word(s): 1. Ang-1; 2. Angiogenesis; 3. Tie-2; 4. Colorectal cancer; Presenting Author: JUN-JI MA Additional Authors: DONG-QIANG ZHAO, JUN-LI SHI, LI-JUAN CHENG, FANG-FANG LI, XIAO-YU JIANG, HUI-QING JIANG Corresponding
Author: HUI-QING JIANG Affiliations: Department of Gastroenterology, The Second Hospital of Hebei Medical University; Department of Gastroenterology, The Second Hospital of Hebei Medical University Objective: Esophageal cancer is a malignant tumor in the world and the common cause of tumor-related death. The development of esophageal cancer is a complex process involving many pathogenic factors, multiple stages, and accumulation of multiple gene mutations and interactions. This study aimed to investigate the effects of Raf kinase inhibitor protein (RKIP) on the proliferation, apoptosis, and invasion of TE-1 cells in esophageal cancer. Methods: The tissues were either fixed in 4% paraformaldehyde solution for hematoxylin-eosin (HE) and immunohistochemical staining. RKIP expression in esophageal tissues was detected by immunohistochemical staining. The esophageal cancer cell line TE-1 was exposed to four different viruses: RKIP-RNAi-AD, NC-RNAi-GFP-AD, RKIP-AD and GFP-AD.