目的探讨过表达干扰素诱导跨膜蛋白3(IFITM3)对胆囊癌细胞MHCC97H增殖、迁移、侵袭的影响。方法构建IFITM3-pc DNA3.1过表达载体,并将IFITM3-pc DNA3.1及pc DNA3.1转入MHCC97H细胞中,同时设立正常对照组。采用实时荧光定量聚合酶链反应(...目的探讨过表达干扰素诱导跨膜蛋白3(IFITM3)对胆囊癌细胞MHCC97H增殖、迁移、侵袭的影响。方法构建IFITM3-pc DNA3.1过表达载体,并将IFITM3-pc DNA3.1及pc DNA3.1转入MHCC97H细胞中,同时设立正常对照组。采用实时荧光定量聚合酶链反应(PCR)法检测IFITM3、B细胞淋巴瘤/白血病-2相关X蛋白(BAX)、B细胞淋巴瘤/白血病-2(Bcl-2)表达,CCK-8法检测细胞活力,划痕实验检测细胞迁移能力,Transwell实验检测细胞侵袭能力。结果酶切结果证实IFITM3过表达载体构建成功。与正常对照组及过表达对照组比较,过表达组MHCC97H细胞IFITM3 m RNA表达量上调,光密度值(OD)升高,细胞迁移速率加快,细胞侵袭数目增加,Bcl-2 m RNA表达水平上调,BAX m RNA表达水平下调,差异均有统计学意义(P﹤0.01)。结论过表达IFITM3能显著促进MHCC97H胆囊癌细胞增殖、迁移及侵袭,与调控Bcl-2及BAX表达有关。展开更多
目的:建立一种干扰素诱导跨膜蛋白2(IFITM2)基因SYBR Green I实时荧光定量PCR检测方法,以期为IFITM2基因的动态监测提供有效的检测技术.方法:根据GenBank中公布的IFITM2基因序列设计特异性引物,以质粒pMD18-T-IFITM2为模板进行条件优化...目的:建立一种干扰素诱导跨膜蛋白2(IFITM2)基因SYBR Green I实时荧光定量PCR检测方法,以期为IFITM2基因的动态监测提供有效的检测技术.方法:根据GenBank中公布的IFITM2基因序列设计特异性引物,以质粒pMD18-T-IFITM2为模板进行条件优化,绘制标准曲线,建立IFITM2基因SYBR Green I实时荧光定量PCR检测方法,并对建立的方法进行条件优化与评价,用建立的方法对脑心肌炎病毒感染后细胞中IFITM2基因转录水平进行检测.结果:建立的20μL检测体系中IFITM2基因最佳引物浓度为10μM,最佳退火温度为59℃;标准质粒在2.62×105~2.62×1010 copies/μL浓度范围内与Ct值呈良好线性关系,线性方程y=-3.495 log x+43.12,R 2=0.998,且灵敏性、特异性和重复性均较高.应用建立的方法对EMCV感染细胞中IFITM2基因转录水平进行检测,结果显示,在感染早期IFITM2转录水平不变,感染后期转录水平逐渐升高.EMCV感染引起宿主IFITM2基因转录水平的变化,可能与EMCV逃逸宿主相关免疫应答有关.结论:成功建立了一种快速、准确检测IFITM2基因的SYBR Green I实时荧光定量PCR方法.该方法的建立,为进一步研究IFITM2在EMCV感染过程中的作用奠定了基础.展开更多
Background Interferon-induced transmembrane protein 1 （IFITM1） has been identified as a molecular marker of the colorectal tumors; however its influences on the biological behaviors of the colorectal cancer cells ar...Background Interferon-induced transmembrane protein 1 （IFITM1） has been identified as a molecular marker of the colorectal tumors; however its influences on the biological behaviors of the colorectal cancer cells are currently unknown.We aimed to study the influences of IFITM1 on the proliferation,invasion,and metastasis of the colorectal cancer SW480 cell lines.Methods We constructed IFITM1/pEGFP-C3 recombinant plasmids and transfected them into the colorectal cancer SW480 cell lines.IFITM1/pEGFP-C3 recombinant plasmids were identified by means of immunofluorescence,laser confocal scanning microscopy,and reverse transcription polymerase chain reaction.IFITM1/SW480 cells with stable over-expression of IFITM1 were confirmed by G418 screening.The influences of IFITM1 on the proliferation of the SW480 cell lines were investigated by MTT assay and tumor transplantation experiments in nude mice.Cell invasion experiments were performed to determine the invasion capacity of the IFITM1/SW480 cells.Matrix metalloproteinase 2 （MMP-2） and MMP-9 activities were detected by the gelatin zymographic analysis,and MMP-9 expression by the Western blotting analysis.Results IFITM1/pEGFP-C3 recombinant plasmids were successfully constructed in this study,and the IFITM1/SW480 cells with stable IFITM1 gene over-expression were confirmed by G418 screening.MTT results showed that the proliferation of the IFITM1/SW480 cells was significantly enhanced （P 〈0.01）.Tumors were harvested from four weeks old mice.Tumor volumes were （1347.00±60.94） mm3,（1032.40±111.38） mm3 and （1018.78±28.83） mm3; and tumor weights were （1522.34±62.76） mg,（1137.78±97.22） mg and （1155.76±133.31） mg for mice inoculated with the IFITM1/SW480 cells,pEGFP-C3/SW480 cells and SW480 cells,respectively.Tumor volumes and weights from mice inoculated with the IFITM1/SW480 cells were significantly increased （P 〈0.01）.In addition,the numbers of the SW480 cells and IFITM1/SW480 cells that migrated through Matrigel were 448.64±展开更多
文摘目的探讨过表达干扰素诱导跨膜蛋白3(IFITM3)对胆囊癌细胞MHCC97H增殖、迁移、侵袭的影响。方法构建IFITM3-pc DNA3.1过表达载体,并将IFITM3-pc DNA3.1及pc DNA3.1转入MHCC97H细胞中,同时设立正常对照组。采用实时荧光定量聚合酶链反应(PCR)法检测IFITM3、B细胞淋巴瘤/白血病-2相关X蛋白(BAX)、B细胞淋巴瘤/白血病-2(Bcl-2)表达,CCK-8法检测细胞活力,划痕实验检测细胞迁移能力,Transwell实验检测细胞侵袭能力。结果酶切结果证实IFITM3过表达载体构建成功。与正常对照组及过表达对照组比较,过表达组MHCC97H细胞IFITM3 m RNA表达量上调,光密度值(OD)升高,细胞迁移速率加快,细胞侵袭数目增加,Bcl-2 m RNA表达水平上调,BAX m RNA表达水平下调,差异均有统计学意义(P﹤0.01)。结论过表达IFITM3能显著促进MHCC97H胆囊癌细胞增殖、迁移及侵袭,与调控Bcl-2及BAX表达有关。
文摘目的:建立一种干扰素诱导跨膜蛋白2(IFITM2)基因SYBR Green I实时荧光定量PCR检测方法,以期为IFITM2基因的动态监测提供有效的检测技术.方法:根据GenBank中公布的IFITM2基因序列设计特异性引物,以质粒pMD18-T-IFITM2为模板进行条件优化,绘制标准曲线,建立IFITM2基因SYBR Green I实时荧光定量PCR检测方法,并对建立的方法进行条件优化与评价,用建立的方法对脑心肌炎病毒感染后细胞中IFITM2基因转录水平进行检测.结果:建立的20μL检测体系中IFITM2基因最佳引物浓度为10μM,最佳退火温度为59℃;标准质粒在2.62×105~2.62×1010 copies/μL浓度范围内与Ct值呈良好线性关系,线性方程y=-3.495 log x+43.12,R 2=0.998,且灵敏性、特异性和重复性均较高.应用建立的方法对EMCV感染细胞中IFITM2基因转录水平进行检测,结果显示,在感染早期IFITM2转录水平不变,感染后期转录水平逐渐升高.EMCV感染引起宿主IFITM2基因转录水平的变化,可能与EMCV逃逸宿主相关免疫应答有关.结论:成功建立了一种快速、准确检测IFITM2基因的SYBR Green I实时荧光定量PCR方法.该方法的建立,为进一步研究IFITM2在EMCV感染过程中的作用奠定了基础.
文摘Background Interferon-induced transmembrane protein 1 （IFITM1） has been identified as a molecular marker of the colorectal tumors; however its influences on the biological behaviors of the colorectal cancer cells are currently unknown.We aimed to study the influences of IFITM1 on the proliferation,invasion,and metastasis of the colorectal cancer SW480 cell lines.Methods We constructed IFITM1/pEGFP-C3 recombinant plasmids and transfected them into the colorectal cancer SW480 cell lines.IFITM1/pEGFP-C3 recombinant plasmids were identified by means of immunofluorescence,laser confocal scanning microscopy,and reverse transcription polymerase chain reaction.IFITM1/SW480 cells with stable over-expression of IFITM1 were confirmed by G418 screening.The influences of IFITM1 on the proliferation of the SW480 cell lines were investigated by MTT assay and tumor transplantation experiments in nude mice.Cell invasion experiments were performed to determine the invasion capacity of the IFITM1/SW480 cells.Matrix metalloproteinase 2 （MMP-2） and MMP-9 activities were detected by the gelatin zymographic analysis,and MMP-9 expression by the Western blotting analysis.Results IFITM1/pEGFP-C3 recombinant plasmids were successfully constructed in this study,and the IFITM1/SW480 cells with stable IFITM1 gene over-expression were confirmed by G418 screening.MTT results showed that the proliferation of the IFITM1/SW480 cells was significantly enhanced （P 〈0.01）.Tumors were harvested from four weeks old mice.Tumor volumes were （1347.00±60.94） mm3,（1032.40±111.38） mm3 and （1018.78±28.83） mm3; and tumor weights were （1522.34±62.76） mg,（1137.78±97.22） mg and （1155.76±133.31） mg for mice inoculated with the IFITM1/SW480 cells,pEGFP-C3/SW480 cells and SW480 cells,respectively.Tumor volumes and weights from mice inoculated with the IFITM1/SW480 cells were significantly increased （P 〈0.01）.In addition,the numbers of the SW480 cells and IFITM1/SW480 cells that migrated through Matrigel were 448.64±
