目的:探讨SEMA3B基因在不同病理类型来源肺癌细胞株中的表达及意义。方法:采用实时定量逆转录聚合酶链反应(Real Time RT-PCR)和琼脂糖凝胶电泳方法,检测来源于不同病理类型肺癌细胞株中SEMA3B基因的表达水平。结果:在不同病理类型的细...目的:探讨SEMA3B基因在不同病理类型来源肺癌细胞株中的表达及意义。方法:采用实时定量逆转录聚合酶链反应(Real Time RT-PCR)和琼脂糖凝胶电泳方法,检测来源于不同病理类型肺癌细胞株中SEMA3B基因的表达水平。结果:在不同病理类型的细胞株中SEMA3B-mRNA均较正常肺癌组织显著低表达;在大细胞肺癌细胞株H 1 299、腺癌细胞株PC7、鳞癌细胞株LK2或LC/Sq1细胞中SEMA3B均表达缺失。结论:SEMA3B低表达或表达缺失可能是肺癌发生的机制之一,深入分析SEMA3B在肺癌细胞中与其它信号通路间的相互作用,将有利于我们阐明肺癌的发生。展开更多
This study was to determine the Semaphorin3B(SEMA3B) role in glioma cells responding to irradiation. Two glioma cell lines,which were used here was wild-type p53(U-87MG),and the other was harboring mutated p53 (U-251)...This study was to determine the Semaphorin3B(SEMA3B) role in glioma cells responding to irradiation. Two glioma cell lines,which were used here was wild-type p53(U-87MG),and the other was harboring mutated p53 (U-251).The SEMA3B mRNA could be detected in the two cell lines.The expression level of SEMA3B mRNA was higher in U-87MG cells than in U-251 cells,and increased with time in U-87MG cells after irradiation.Knockdown of SEMA3B expression by shRNA decreased the radiosensitivity of U-87MG cells,this may be associated with the increased G2 accumulation after irradiation.In addition,G2 accumulation after irradiation was enhanced in SEMA3B low-expressing U-87MG cells.These results showed that the SEMA3B was implicated in glioma cells responding to irradiation.展开更多
文摘目的:探讨SEMA3B基因在不同病理类型来源肺癌细胞株中的表达及意义。方法:采用实时定量逆转录聚合酶链反应(Real Time RT-PCR)和琼脂糖凝胶电泳方法,检测来源于不同病理类型肺癌细胞株中SEMA3B基因的表达水平。结果:在不同病理类型的细胞株中SEMA3B-mRNA均较正常肺癌组织显著低表达;在大细胞肺癌细胞株H 1 299、腺癌细胞株PC7、鳞癌细胞株LK2或LC/Sq1细胞中SEMA3B均表达缺失。结论:SEMA3B低表达或表达缺失可能是肺癌发生的机制之一,深入分析SEMA3B在肺癌细胞中与其它信号通路间的相互作用,将有利于我们阐明肺癌的发生。
基金Supported by grants from the National Natural Science Foundation of China(No.31270897,No.30870585)Graduate Innovation Foundation of Medical College of Soochow University and the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)
文摘This study was to determine the Semaphorin3B(SEMA3B) role in glioma cells responding to irradiation. Two glioma cell lines,which were used here was wild-type p53(U-87MG),and the other was harboring mutated p53 (U-251).The SEMA3B mRNA could be detected in the two cell lines.The expression level of SEMA3B mRNA was higher in U-87MG cells than in U-251 cells,and increased with time in U-87MG cells after irradiation.Knockdown of SEMA3B expression by shRNA decreased the radiosensitivity of U-87MG cells,this may be associated with the increased G2 accumulation after irradiation.In addition,G2 accumulation after irradiation was enhanced in SEMA3B low-expressing U-87MG cells.These results showed that the SEMA3B was implicated in glioma cells responding to irradiation.
