One hundred and seventy HCCs were randomly retrieved from HCC patients who underwent curative resection at Eastern Hepatobiliary Surgery this website Hospital, Shanghai, China, from September 2001 to July 2007 (see detailed clinicopathological features in Supporting Table 1). All patients were followed up until March 2010, with a median observation time of 40 months. Overall survival (OS) was defined as the interval between the dates of

surgery and death. Disease-free survival (DFS) was defined as the interval between the dates of surgery and recurrence; if recurrence was not diagnosed, patients were censored on the date of death or the last follow-up. Matched pairs of primary HCC samples and adjacent liver tissues were used for the construction of a tissue microarray (in collaboration with Shanghai Biochip Company, Shanghai, China). Immunostaining

was performed on tissue microarray Talazoparib slides. Assessment of the staining was based on the percentage of positively stained cells and the staining intensity using software Image-Pro Plus 6.0 (Media Cybernetics, Inc., Bethesda, MD). Fifty-eight pairs of human HCC with pericancerous tissues and 38 pairs of HCC with portal vein tumor thrombus samples diagnosed by pathologist were obtained from Eastern Hepatobiliary Surgery Hospital. Patient samples were obtained following informed consent according to an established protocol approved by the Ethic Committee of Eastern Hepatobiliary Surgery Hospital. SMMC-7721/cyclin G1, HepG2/cyclin G1, and their control cells (1 × 103) were cultured in 96-well

plates for various time periods. Adenosine triphosphate activity was measured using Cell Counting Kit-8 (Dojindo, Kumamoto, Japan) with a Synergy 2 microplate reader to assess the cell proliferation. Hepatoma cells (2.5 × 104) were seeded in 96-well plates coated with 10 μg/mL fibronectin (Calbiochem, La Jolla, CA) and cell adhesion was evaluated. For wound healing assay, monolayers of cells were wounded by scraping with a plastic pipette tip and rinsed several times with selleckchem medium to remove dislodged cells. Cells that had migrated into the wound area were photographed. For invasion assay, 2 × 105 cells were plated into the upper chamber of a polycarbonate transwell filter chamber coated with Matrigel (BD) and incubated for 60 hours. Cell counts are expressed as the mean number of cells per field of view. Six-week-old male BALB/c nude mice were randomized into two groups (n = 11) and inoculated with SMMC-7721/cyclin G1 or control cells (2 × 106) in spleen. Four mice were sacrificed 8 weeks after inoculation, and metastatic tumor colonies in the liver were measured. The remaining mice were observed for survival analysis. For the tail vein metastasis model, 22 nude mice were randomized into two groups. SMMC-7721/cyclin G1 or control cells (2 × 106) were injected into the tail vein of nude mice.