The expression and properties of alkaline phosphatase (ALP) in Eca109 cells, a cell line derived fromhuman esophageal cancer were studied with specific inhibition assay and polyacrylamide gel electrophoresis.The resul...The expression and properties of alkaline phosphatase (ALP) in Eca109 cells, a cell line derived fromhuman esophageal cancer were studied with specific inhibition assay and polyacrylamide gel electrophoresis.The results showed that ALP of Eca109 cells was heat stable and was strongly inhibited by L-pheuylalanine, but slightly inhibited by urea. Preduisolone could causedramatic increase in activity of ALP, but no change in ALP isozyme and concomitant increase in lactic dehydrogenase activity were found after prednisolone treatment. The results suggested that placental alkaline phosphatase as an oncodevelopmental gene product could be expressed ectopically by Eca109 cells and prednisolone could specifically induce increase in its activity.展开更多
目的观察慢病毒介导的sh RNA沉默肝再生磷酸酶-3(PRL-3)基因对结肠癌SW480细胞增殖、侵袭、凋亡的影响。方法实验分组为空白对照组、阴性对照组、转染组。将携带PRL-3 sh RNA的慢病毒载体转染结肠癌SW480细胞,建立稳定沉默PRL-3的细胞株...目的观察慢病毒介导的sh RNA沉默肝再生磷酸酶-3(PRL-3)基因对结肠癌SW480细胞增殖、侵袭、凋亡的影响。方法实验分组为空白对照组、阴性对照组、转染组。将携带PRL-3 sh RNA的慢病毒载体转染结肠癌SW480细胞,建立稳定沉默PRL-3的细胞株,real-time PCR检测转染后PRL-3 m RNA的相对表达水平。采用MTT法、平板克隆形成实验检测转染后细胞增殖能力;采用Transwell侵袭实验、侵袭小室法检测转染后细胞迁移及侵袭能力;采用流式细胞术检测转染后细胞凋亡率变化。结果稳定沉默PRL-3的细胞株构建成功,转染组PRL-3m RNA的相对表达水平低于空白对照组、阴性对照组(P<0.05),空白对照组、阴性对照组比较差异无统计学意义。PRL-3 sh RNA转染SW480细胞72 h后,转染组与空白对照组、阴性对照组比较,细胞增殖能力受到抑制,转染120 h时最明显(P<0.05)。转染组克隆形成能力较空白对照组、阴性对照组下降(P<0.05)。转染组与空白对照组、阴性对照组比较,细胞迁移、侵袭能力下降,凋亡率增加(P<0.05)。结论结肠癌SW480细胞转染PRL-3 sh RNA可减少PRL-3的表达,有效抑制SW480细胞增殖,促进其凋亡,PRL-3可能成为治疗结肠癌的靶基因。展开更多
文摘The expression and properties of alkaline phosphatase (ALP) in Eca109 cells, a cell line derived fromhuman esophageal cancer were studied with specific inhibition assay and polyacrylamide gel electrophoresis.The results showed that ALP of Eca109 cells was heat stable and was strongly inhibited by L-pheuylalanine, but slightly inhibited by urea. Preduisolone could causedramatic increase in activity of ALP, but no change in ALP isozyme and concomitant increase in lactic dehydrogenase activity were found after prednisolone treatment. The results suggested that placental alkaline phosphatase as an oncodevelopmental gene product could be expressed ectopically by Eca109 cells and prednisolone could specifically induce increase in its activity.
文摘目的观察慢病毒介导的sh RNA沉默肝再生磷酸酶-3(PRL-3)基因对结肠癌SW480细胞增殖、侵袭、凋亡的影响。方法实验分组为空白对照组、阴性对照组、转染组。将携带PRL-3 sh RNA的慢病毒载体转染结肠癌SW480细胞,建立稳定沉默PRL-3的细胞株,real-time PCR检测转染后PRL-3 m RNA的相对表达水平。采用MTT法、平板克隆形成实验检测转染后细胞增殖能力;采用Transwell侵袭实验、侵袭小室法检测转染后细胞迁移及侵袭能力;采用流式细胞术检测转染后细胞凋亡率变化。结果稳定沉默PRL-3的细胞株构建成功,转染组PRL-3m RNA的相对表达水平低于空白对照组、阴性对照组(P<0.05),空白对照组、阴性对照组比较差异无统计学意义。PRL-3 sh RNA转染SW480细胞72 h后,转染组与空白对照组、阴性对照组比较,细胞增殖能力受到抑制,转染120 h时最明显(P<0.05)。转染组克隆形成能力较空白对照组、阴性对照组下降(P<0.05)。转染组与空白对照组、阴性对照组比较,细胞迁移、侵袭能力下降,凋亡率增加(P<0.05)。结论结肠癌SW480细胞转染PRL-3 sh RNA可减少PRL-3的表达,有效抑制SW480细胞增殖,促进其凋亡,PRL-3可能成为治疗结肠癌的靶基因。