83 ± 3.53 23.50 ± 0.20 5.50 ± 0.58 29.05 ± 0.28 MHCC-97H-vector

67.33 ± 1.02 31.13 ± 0.44 Blasticidin S in vivo 1.90 ± 0.45 32.98 ± 0.89 MHCC-97H 67.43 ± 0.75 30.63 ± 0.98 1.93 ± 0.47 32.57 ± 0.75 The cell-cycle distribution was assessed by flow cytometric Bindarit concentration analysis 24 h after transfection of PDCD4 to MHCC-97H cells. The data shown are means ± SEM of percentage of G1, G2 or S phase in three experiments. The proliferative indexes (PI) were calculated as follows: PI = (S+G2)/(S+G2+G1). The difference of PI between the MHCC-97H-PDCD4 group and MHCC-97H-vector or the MHCC-97H group is significant (n = 3, P < 0.05). No significant difference between the MHCC-97H-vector and the MHCC-97H group is found. Effects of PDCD4 on MHCC-97H cell apoptosis Dactolisib supplier Cell apoptosis was analyzed both quantitatively and morphologically. The apoptosis rate detected by the flow cytometric assay was 13.03 ± 1.47%, 2.99 ± 0.33% and 2.47 ± 0.15%

in the MHCC-97H -PDCD4 cells (Group1), the MHCC-97H-vector cells (Group2) and the MHCC-97H cells (Group3), respectively (Fig. 2C). Hoechst 33258 staining showed the nuclear alterations of apoptosis – condensed, coalesced, and segmented nuclei with a brighter blue fluorescence. The percentage of apoptosis cells was 29.84 ± 3.80% in MHCC-97H -PDCD4 group(Group1), 5.666 ± 0.44% in the MHCC-97H-vector group (Group2) and 4.62 ± 0.43% in the MHCC-97H group (Group3), respectively. (Fig. 2D). The difference was significant between Group1 and Group2 or Group3

(n = 5, P < 0.01). There was no statistical difference between the two control groups. Effects of PDCD4 on MTA1 expression of MHCC-97H cells In order to further study the effects of PDCD4 on metastasis, we detected the gene expression of MTA1 in MHCC-97H-PDCD4, MHCC-97H-vector and MHCC-97H cells, respectively, with both real- Cetuximab datasheet time PCR and western blotting analysis. The quantitative assay of real- time PCR was reported in RQ units as compared with the parental MHCC-97H cells. RQ for the recombinant group and the empty vector group was 0.187 ± 0.083 and 0.652 ± 0.105, respectively. The difference was significant (n = 3, P < 0.05) (Fig. 3A). Western blots for PDCD4 expression display a band of 80 kD (Fig. 3B). The relative densities (RD) of MTA1 for MHCC-97H cells, MHCC-97L cells and Hep3B cells were 0.074 ± 0.047, 0.376 ± 0.045 and 0.395 ± 0.069, respectively (Fig. 3C). The difference was significant (n = 3, P < 0.05). Figure 3 Effects of PDCD4 on MHCC-97H cell metastatic potential. B: Western blots for MTA1 expression. A and C: Statistical analysis for MTA1 expression with real-time PCR and western blot assay, respectively. D: Cell migration assay. E: Matrigel invasion assay. Representative images are shown from three individual experiments. In A, C, D and E, a or Group1, b or Group 2, and c or Group3 represents cells of MHCC-97H-PDCD4, MHCC-97H-vector and MHCC-97H, respectively. Bars represent the means ± SD.