(A): OVCAR-3 cells. (B): OVCAR-3-neo cells. (C): OVCAR-3-NC cells. (D): OVCAR-3-s3 cells (Hematoxylin staining, × 100). Bar graphs show the average rates of monoplast colony formation.*P

< 0.05 versus control groups. Apoptosis induced by MACC1 RNAi Cell apoptosis rate measured by flow cytometer (Figure 6) in OVCAR-3-s3 cells was markedly increased to 24.13%, higher than 3.37% for OVCAR-3, 7.82% for OVCAR-3-neo, and 7.19% for OVCAR-3-NC cells (P < 0.05). Furthermore, TUNEL assay showed numbers of apoptosis body were increased in OVCAR-3-s3 EPZ004777 nmr cells (Figure 7). The results of apoptosis assay indicated the inhibitory effect of cell growth might due to the enhancement of apoptosis by MACC1 RNAi. Figure 6 Apoptosis induced by MACC1 RNAi in GSK1838705A molecular weight ovarian carcinoma cells. After MACC1 inhibition, cell apoptosis was obviously induced in ovarian carcinoma cells measured by flow cytometry assay. Figure 7 MACC1-shRNA increased the MI-503 clinical trial apoptosis rate of ovarian carcinoma cells. TUNEL assay was used to measure the apoptosis rate in OVCAR-3 cells (A), OVCAR-3-neo cells (B), OVCAR-3-NC cells (C), and OVCAR-3-s3 cells (D). DAB staining, × 400. Bar graphs show the rates of apoptosis.*P < 0.05 versus control groups. Suppression of migration by MACC1 RNAi Compared with control groups, OVCAR-3-s3 cells showed suppressed capacity of impaired migration (Figure

8 and 9). Moreover, numbers of cell adherent on lower membranes of transwell chamber were sharply decreased in OVCAR-3-s3 group, which were shown in Figure 10. These results suggested MACC1 RNAi could suppress migration capability of ovarian carcinoma cells. Figure 8 Knockdown of MACC1 by RNAi suppressed the migration ability of ovarian carcinoma cells.

Wound healing assay was used for monolayer cell migration assay (Hematoxylin staining, × 100). Figure 9 Bar graph of the wound healing assay. Each bar represents the value of wound healing assay. *P < 0.05 versus control groups. Figure 10 Inhibition of MACC1 by RNAi suppressed the migration ability of ovarian carcinoma cells. Transwell migration assay was used for cell migration ability assay. (A): OVCAR-3 cells. (B): OVCAR-3-neo cells. (C): OVCAR-3-NC G protein-coupled receptor kinase cells. (D): OVCAR-3-s3 cells (Hematoxylin staining, × 400). Each bar represents the cell numbers adherent on lower membrane.*P < 0.05 versus control groups. Activity of invasion retarded by MACC1 RNAi The numbers of cell, assessed in Matrigel invasion assay, were remarkably decreased in OVCAR-3-s3 group (Figure 11). On the other hand, the volumes of xenograft tumors removed from nude mice were retarded apparently in OVCAR-3-s3 group after 35 days. As shown in Figure 12, the growth of xenograft tumors in OVCAR-3-s3 group obviously fell behind other groups. Results of invasion assay indicated invasive potential of ovarian carcinoma cells could be retarded by MACC1 RNAi. Figure 11 Inhibition of invasion by MACC1 RNAi in ovarian carcinoma cells.