Objective To investigate effects of microRNA-506 (miR-506) on malignant phenotypes of hepatocellular carcinoma (HCC) cells, including cellular viability, proliferation and invasion. Methods HCC cell lines HepG2 and QGY-7703 were served as model. Five experimental groups were established in this study, including cell control, pcDNA 3 blank vector control, miR-506 over-expression, pSIH1 blank vector control and miR-506 suppression groups. Real-time reverse transcription PCR assay was performed to measure miR-506 level. CCK-8, colony formation and Transwell assays were performed to detect viability, colony formation activity and invasion activity of HCC cell lines, respectively. Effects of miR-506 on these indexes were evaluated. Results In HepG2 and QGY-7703 cell lines, miR-506 level increased in the miR-506 over-expression group (P<0.01), and its level decreased in the miR-506 suppression group (P<0.05) compared with the related blank vector control groups. In the miR-506 over-expression group, cellular viability was significantly reduced (P<0.01), cell colony number decreased, and number of cell penetrating Transwell microporous membrane was also decreased (P<0.01). In the miR-506 suppression group, cellular viability significantly increased (P<0.01), and both colony number and penetrating cell number increased (P<0.05). Also, there were no effects on the above indexes in pcDNA3 and pSIH1 blank vector control groups compared with those of cell control group (P>0.05). Conclusion miR-506 plays a tumor suppressor role in HCC cells by inhibiting cell viability, colony formation and invasion.

Objective To investigate the effects of microRNA-506 (miR-506) on malignant phenotype of colorectal carcinoma cells. To identify the target gene of miR-506 in colon carcinoma. Methods SW480 cells were divided into five groups, known as normal cell group, miR-506 overexpression and, miR-506 inhibition groups with their vehicle groups.The migration and invasion abilities of SW480 cells were measured with Transwell migration assay. Cell viability and colony forming activities were measured by CCK8 and colony formation assays, respectively. Furthermore, bioinformatic method, green fluorescent protein (GFP) reporter assays, quantitative reverse transcription polymerase chain reaction (qRT-PCR) and Western blot were applied to predict potential target genes of miR-506. Results The number of migrated and invasive cells, viability and clonality in the miR-506 overexpression groups reduced. LAMC1 mRNA and protein levels in the miR-506 overexpression groups were lower than those in the control groups. Conclusion LAMC1 is a direct target gene for miR-506 and miR-506 could inhibit the cell migratioin and invasion.

Objective To analyze and evaluate the efficacy of living donor liver transplantation (LDLT) and deceased
donor liver transplantation (DDLT). Methods The clinical data of prognosis and influencing factors of 320 children with liver transplantation were analyzed retrospectively. The 320 children were divided into LDLT group (n=252) and DDLT group (n=68) based on their operation styles. In LDLT group, all donors to recipients were immediate relatives within three generation. In DDLT group, all livers were obtained from cardiac death or brain death donors. The survival and incidence of complications were observed between two groups. Results The 1-year, 2-year and 3-year cumulative survival rates for recipients were 95.1%, 93.5% and 93.5% in LDLT group, and 92.3%, 92.3% and 82.4% in LDLT group. There was no significant difference between the two groups (Log-rank χ2=0.69,P=0.41). During the follow-up period,14 cases died (5.56%) in LDLT group, in which 8 deaths due to respiratory complication, 3 deaths due to multiple organ failure, and 3 deaths due to graft failure. In DDLT donor group, 5 cases died (7.35%), in which 1 death due to respiratory complication, 2 deaths due to multiple organ failure, 1 death due to intra-abdominal hemorrhage, and 1 case of unknown cause of death. There were no significant differences in portal vein thrombosis (PVT), outflow tract obstruction, biliary tract complications and pulmonary infection between the two groups (P>0.05). The ratio of hepatic artery thrombosis (HAT) was lower in LDLT group than that of DDLT group (1.98%vs. 10.29%,χ2=10.245,P<0.01). Conclusion Living donor liver transplantation is an effective method to treat end-stage liver disease.