To investigate the modulating effects of survivn antisense oligonucletode (ASODN) on the cell cycle and apoptosis of human hepatocellular carcinoma (HCC) cell line SMMC-7721 and explore its mechanism.Methods Survivin ...To investigate the modulating effects of survivn antisense oligonucletode (ASODN) on the cell cycle and apoptosis of human hepatocellular carcinoma (HCC) cell line SMMC-7721 and explore its mechanism.Methods Survivin ASODN was transfected into SMMC-7721 cells mediated by DOTAP liposomal reagent.Electron microscopy,flow cytometry and RT-PCR were used to detect the changes in cell ultrastructure,apoptosis,cell cycle and the expression of cyclinB1 mRNA,respectively.Results After transfection of survivin ASODN,the expression of cyclinB1 mRNA in the cells significantly increased and increase in G2-M arrest and apoptosis appeared.Meanwhile,the cell ultrastructure had apoptotic changes such as chromatin condensation and apoptotic body formation.Conclusion Survivin ASODN can induce the expression of cyclinB1 that may result in G2-M arrest.Consequently,apoptosis is triggered.Survivin ASODN transfection might be an improtant new treatment for HCC.14 refs,2 figs,1 tab.展开更多
研究β2糖蛋白I(β2GPI)与肝细胞相互作用的过程,以进一步探讨β2GPI在乙型肝炎病毒感染肝细胞过程中所发挥的作用。采用L igand b lot技术,从SMMC-7721、HL-60及SGC-7901三个细胞株中,筛选出具有与人β2GPI特异结合蛋白成分的细胞。SMM...研究β2糖蛋白I(β2GPI)与肝细胞相互作用的过程,以进一步探讨β2GPI在乙型肝炎病毒感染肝细胞过程中所发挥的作用。采用L igand b lot技术,从SMMC-7721、HL-60及SGC-7901三个细胞株中,筛选出具有与人β2GPI特异结合蛋白成分的细胞。SMMC-7721细胞在40kD处出现一特异染色带,而HL-60及SGC-7901二种细胞则无此反应。在SMMC-7721细胞中存在有与人β2GPI特异结合的蛋白,这种蛋白可能参与了HBV感染肝细胞的过程。展开更多
Objective： To detect differential protein expression in malignant and normal liver cell lines in vitro using the SELDI ProteinChip platform, for investigating the pathogenesis of liver cancer. Methods： Two cell line...Objective： To detect differential protein expression in malignant and normal liver cell lines in vitro using the SELDI ProteinChip platform, for investigating the pathogenesis of liver cancer. Methods： Two cell lines, human normal liver cell line L02 and hepatoma cell line SMMC-7721 were cultured routinely, harvested in good condition and lysed. After quantification, the supernatant of the lysate was tested by IMAC3 （Immobilized Mental Affinity Capture） and WCX2 （Weak Cation Exchange） chips on the SELDI-TOF-MS ProteinChip reader. Results： Protein expression differed between the malignant and normal liver cell lines. A total of 20 differentially expressed proteins were found, among which, 7 were captured by the IMAC3 chip and 14 by the WCX2 chip. Peaks at 5,419, 7,979 and 11,265 Da were higher and at 8,103, 8,492, 10,160 and 11,304 Da lower in SMMC-7721 cells by the IMAC3 chip; peaks at 7,517, 7,945 and 7,979 Da were higher and at 5,061, 5,551, 5,818, 7,439, 9,401,10,100, 10,312, 11,621, 11,662, 11,830 and 12,772 Da lower in SMMC-7721 cells by the WCX2 chip. Interestingly, both chips captured the 7,979 Da peak. In addition, the 11,081 Da peak corresponded precisely with the molecular mass of the calcium binding protein S100A10, which may participate in the formation of liver cancer in association with p36. Conclusion： Detecting differential protein expression in malignant and normal liver cell lines using the SELDI ProteinChip platform was simple, sensitive and repeatable. The results we obtained can serve as a basis for investigating the pathogenesis of liver cancer and aid the discovery of new therapeutic targets.展开更多
目的:应用基因芯片技术研究白花蛇舌草豆甾醇(Stigmasterol from Hedyotis diffusa willd.,SHD)抑制人肝癌细胞SMMC-7721生长的靶基因调控。方法:MTT法评价SHD在0、5、10、50、100mg/L浓度下,于24、48、72h对人肝癌细胞SMMC-7721的抑制...目的:应用基因芯片技术研究白花蛇舌草豆甾醇(Stigmasterol from Hedyotis diffusa willd.,SHD)抑制人肝癌细胞SMMC-7721生长的靶基因调控。方法:MTT法评价SHD在0、5、10、50、100mg/L浓度下,于24、48、72h对人肝癌细胞SMMC-7721的抑制率变化。分别提取人正常肝细胞、人肝癌SMMC-7721细胞和SHD作用后的SMMC-7721细胞的总RNA,逆转录合成单链、双链cDNA后,体外转录合成生物素标记的cRNA与人HO4基因表达谱芯片杂交,扫描杂交芯片图像,利用软件获得SHD抑制人肝癌的靶基因,对其进行生物信息学分析。结果:SHD对SMMC-7721具有体外抑制作用,且呈剂量依赖性和时间依赖性;SHD使癌基因fos、myc、ras、pim-1、met、rel下调至正常水平,使抑癌基因NF-2和磷酸激酶MAP2K6的表达上调至正常水平。结论:SHD对人肝癌细胞SMMC-7721具有显著的体外抑制作用;SHD抑制SMMC-7721细胞的作用由多条靶基因协同,并通过胞内外信号转导途径协调完成。展开更多
文摘To investigate the modulating effects of survivn antisense oligonucletode (ASODN) on the cell cycle and apoptosis of human hepatocellular carcinoma (HCC) cell line SMMC-7721 and explore its mechanism.Methods Survivin ASODN was transfected into SMMC-7721 cells mediated by DOTAP liposomal reagent.Electron microscopy,flow cytometry and RT-PCR were used to detect the changes in cell ultrastructure,apoptosis,cell cycle and the expression of cyclinB1 mRNA,respectively.Results After transfection of survivin ASODN,the expression of cyclinB1 mRNA in the cells significantly increased and increase in G2-M arrest and apoptosis appeared.Meanwhile,the cell ultrastructure had apoptotic changes such as chromatin condensation and apoptotic body formation.Conclusion Survivin ASODN can induce the expression of cyclinB1 that may result in G2-M arrest.Consequently,apoptosis is triggered.Survivin ASODN transfection might be an improtant new treatment for HCC.14 refs,2 figs,1 tab.
文摘研究β2糖蛋白I(β2GPI)与肝细胞相互作用的过程,以进一步探讨β2GPI在乙型肝炎病毒感染肝细胞过程中所发挥的作用。采用L igand b lot技术,从SMMC-7721、HL-60及SGC-7901三个细胞株中,筛选出具有与人β2GPI特异结合蛋白成分的细胞。SMMC-7721细胞在40kD处出现一特异染色带,而HL-60及SGC-7901二种细胞则无此反应。在SMMC-7721细胞中存在有与人β2GPI特异结合的蛋白,这种蛋白可能参与了HBV感染肝细胞的过程。
基金the grant from the National Natural Science Foundation of China(No.30471527, No. 30540075)Mt. Tai Scholar Construction Engineering Foundation
文摘Objective： To detect differential protein expression in malignant and normal liver cell lines in vitro using the SELDI ProteinChip platform, for investigating the pathogenesis of liver cancer. Methods： Two cell lines, human normal liver cell line L02 and hepatoma cell line SMMC-7721 were cultured routinely, harvested in good condition and lysed. After quantification, the supernatant of the lysate was tested by IMAC3 （Immobilized Mental Affinity Capture） and WCX2 （Weak Cation Exchange） chips on the SELDI-TOF-MS ProteinChip reader. Results： Protein expression differed between the malignant and normal liver cell lines. A total of 20 differentially expressed proteins were found, among which, 7 were captured by the IMAC3 chip and 14 by the WCX2 chip. Peaks at 5,419, 7,979 and 11,265 Da were higher and at 8,103, 8,492, 10,160 and 11,304 Da lower in SMMC-7721 cells by the IMAC3 chip; peaks at 7,517, 7,945 and 7,979 Da were higher and at 5,061, 5,551, 5,818, 7,439, 9,401,10,100, 10,312, 11,621, 11,662, 11,830 and 12,772 Da lower in SMMC-7721 cells by the WCX2 chip. Interestingly, both chips captured the 7,979 Da peak. In addition, the 11,081 Da peak corresponded precisely with the molecular mass of the calcium binding protein S100A10, which may participate in the formation of liver cancer in association with p36. Conclusion： Detecting differential protein expression in malignant and normal liver cell lines using the SELDI ProteinChip platform was simple, sensitive and repeatable. The results we obtained can serve as a basis for investigating the pathogenesis of liver cancer and aid the discovery of new therapeutic targets.
文摘目的:应用基因芯片技术研究白花蛇舌草豆甾醇(Stigmasterol from Hedyotis diffusa willd.,SHD)抑制人肝癌细胞SMMC-7721生长的靶基因调控。方法:MTT法评价SHD在0、5、10、50、100mg/L浓度下,于24、48、72h对人肝癌细胞SMMC-7721的抑制率变化。分别提取人正常肝细胞、人肝癌SMMC-7721细胞和SHD作用后的SMMC-7721细胞的总RNA,逆转录合成单链、双链cDNA后,体外转录合成生物素标记的cRNA与人HO4基因表达谱芯片杂交,扫描杂交芯片图像,利用软件获得SHD抑制人肝癌的靶基因,对其进行生物信息学分析。结果:SHD对SMMC-7721具有体外抑制作用,且呈剂量依赖性和时间依赖性;SHD使癌基因fos、myc、ras、pim-1、met、rel下调至正常水平,使抑癌基因NF-2和磷酸激酶MAP2K6的表达上调至正常水平。结论:SHD对人肝癌细胞SMMC-7721具有显著的体外抑制作用;SHD抑制SMMC-7721细胞的作用由多条靶基因协同,并通过胞内外信号转导途径协调完成。
