Methods: ① The luciferease gene coding sequence was amplified from PMIR-luciferase using polymerase chain

reaction (PCR). The amplified product was digested with BamH1 and Kpn1 and cloned into the Bam H1 and Kpn1 sites in Psmp8 plasmid under an αSMA promoter component. INK 128 chemical structure The recombinant was sequenced to assess the orientation of the insert and the correctness of the sequence. We named this recombinant Psmp8+Luciferase. ② Mouse hepatic stellate cells (HSCs) were isolated from kunming mice’s livers using the way of density gradient centrifugation. Isolated HSCs were activated after being cultured and passaged numbers of days. Expression of αSMA was determined by western blot and immunofluorescence. ③ Psmp8+Luciferase and Renilla luciferase vector were co-transfected HSCs, hepatic cells and kuffer cells. PeGFP plasmid and Renilla luciferase vector were co-transfected the above cells as the negative control. Using Dual-Luciferase Reporter Assay System detected the expression of the two plasmids in HSCs, hepatic cells, kuffer cells. Results: ① The Psmp8+Luciferase sequence and the orientation of the insert were sequenced correct. ② The cells isolated from mice livers could

express αSMA determined by western blot and immunofluorescence. So the isolated cells were HSCs and had been activated. LDK378 order ③ The Psmp8+Luciferase could express luciferase in HSCs, but not in kuffer cells and hepatic cells detected by Dual-Luciferase Reporter

Assay System. Conclusion: The Psmp8+Luciferase containing the αSMA promoter could express specifically in activated HSCs. This suggested that Psmp8+Luciferase containing Ribose-5-phosphate isomerase αSMA promoter could be used as an specific vector targeted activation HSCs, further more it may be recombined and used in the fibrosis gene therapy. Key Word(s): 1. targeted therapy; 2. HSCs; 3. αSMA promoter; 4. liver fibrosis; Presenting Author: WUPENG BO Additional Authors: TANSHI YUN, ZHANG BO Corresponding Author: WUPENG BO Affiliations: wuhan university; guangxi renmin hospital Objective: Objective To explore the effects of ursodeoxycholic acid in rats’ chronic hepatic injury and it’s mechanism. Methods: Methods Rat s’ chronic hepatic injury model was induced by subcutaneous inject ion of CCl4 for 6 weeks. Suspension of ursodeoxycholic acid preprared with normal saline was given orally to the rats, 20 mg●kg-1●d-1 for 4 weeks. HE staining was done to characterize the change of hepatic pathology. Masson staining was used to qualitatively analyse the accumulation of extracellular matrix. The levels o f serum ALT, AST, TBIL and MAO were detected. And western blotting was also performed to detect the expression level of autophagic molecular signals including ATG-5, beclin-1 and LC3 II.