【摘要】 目的 研究肿瘤坏死因子相关凋亡诱导配体(TRAIL)蛋白对SKOV3移植瘤细胞半胱天冬氨酸蛋白酶-3(Caspase-3)表达的影响及其与肿瘤细胞凋亡的关系。 方法 建立雌性裸小鼠SKOV3移植瘤24只,随机分为4组,每组6只。TRAIL组单用重组人TRAIL蛋白(10 μg/kg),顺铂(DDP)组单用DDP(3 mg/kg),TRAIL+DDP组联合使用TRAIL蛋白(10 μg/kg)和DDP(3 mg/kg),空白对照组给予0.5 mL生理盐水。经处理后,各组的组织切片用免疫组织化学染色检测Caspase-3的表达和末端脱氧核苷酸转移酶介导核苷酸缺口标记技术(TUNEL)检测肿瘤细胞凋亡指数。 结果 Caspase-3的表达水平在TRAIL组(171.67±14.38)、DDP组(172.50±14.75)、联合组(230.00±40.99)中均明显高于对照组(135.83±16.25)(P lt;0.05)。SKOV3移植瘤细胞凋亡指数在空白对照组、TRAIL组、DDP组和联合组分别为16.67±5.43、33.17±8.42、24.33±4.59和40.50±6.16,TRAIL组和联合组细胞凋亡指数较空白对照组和DDP组明显增高(P lt;0.05)。 结论 TRAIL蛋白使卵巢癌移植瘤细胞的Caspase-3表达增强,TRAIL蛋白促进肿瘤细胞凋亡发生。
【Abstract】 Objective To investigate the effects of Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) on the expression of Cysteine/aspartic acid specific protease- 3 (Caspase-3) in SKOV3 ovarian tumor cells and its relationship with the apoptosis of the ovarian tumor xenografts in nude mice. Methods Twenty-four nude mice with SKOV3 cell line ovarian tumor were randomly divided into four groups with 6 in each group. TRAIL (10 μg/kg) was given to the mice in the TRAIL group; DDP (3 μg/kg) was given to the mice in the DDP group; TRAIL (10 μg/kg) and DDP (3 μg/kg) were given to the mice in the TRAIL+DDP group; and 0.5 mL of saline solution was give to the mice in the control group. The expression of Caspase-3 was detected with immunohistochemistry. The apoptosis index (AI) of cells was determined by Terminal deoxynucleotidyl transferase mediated-dUTP nick end labeling (TUNEL). Results The expression of Caspase-3 in the TRAIL group (171.67±14.38), DDP group (172.50±14.75), and TRAIL+DDP group (230.00±40.99) was significantly higher than that in the control group (135.83±16.25) (P lt;0.05). The apoptosis index for the control group, TRAIL group, DDP group and TRAIL+DDP group was 16.67±5.43, 33.17±8.42, 24.33±4.59, and 40.50±6.16, respectively. The apoptosis index for the TRAIL group and the TRAIL+DDP group was significantly higher than that in the control group and the DDP group (P lt;0.05). Conclusion Soluble TRAIL has an effect on enhancing the expression of Caspase-3 in implanted tumor in nude mice. TRAIL protein can inhibit the growth of SKOV3 cells in nude mice by inducing cell apoptosis.
Citation: LI Chunmei,PENG Zhilan,YANG Kaixuan,LIU Ying,HUANG Qin. Research on the Impact of TRAIL on Apoptosis of SKOV3 Cell Line Ovarian Tumor Xenografts in Nude Mice. West China Medical Journal, 2011, 26(4): 481-484. doi: Copy