目的探讨内皮细胞蛋白C受体(endothelial protein C receptor,EPCR)对乳腺癌增殖、迁移的影响及机制研究。方法采用siRNA技术降低人乳腺癌MCF-7细胞中EPCR的表达;添加抗PAR-1抗体阻断PAR-1作用,然后采用CCK-8检测细胞的增殖能力、Transw...目的探讨内皮细胞蛋白C受体(endothelial protein C receptor,EPCR)对乳腺癌增殖、迁移的影响及机制研究。方法采用siRNA技术降低人乳腺癌MCF-7细胞中EPCR的表达;添加抗PAR-1抗体阻断PAR-1作用,然后采用CCK-8检测细胞的增殖能力、Transwell检测迁移能力、Cell-ELISA检测EPCR对PAR-1活性的影响。结果 EPCR干扰后,与空白对照组及无关序列组相比,EPCR干扰组MCF-7细胞的增殖及迁移能力均明显降低(P<0.05)。抗PAR-1抗体处理后,与空白对照组相比,PAR-1抗体处理组细胞的增殖迁移能力均明显降低(P<0.05)。并且Cell-ELISA结果显示EPCR干扰组未裂解活化的PAR-1抗体结合率明显升高(P<0.05)。结论 EPCR可以通过活化PAR-1促进人乳腺癌MCF-7细胞增殖迁移。展开更多
Climate and weather conditions greatly affect the performance of new wheat cultivars for yield and resource use efficiency. In order to know the effect of irrigation schedules based on growth stage (the most vital cri...Climate and weather conditions greatly affect the performance of new wheat cultivars for yield and resource use efficiency. In order to know the effect of irrigation schedules based on growth stage (the most vital criterion in the region) on growth, yield and radiation use efficiency of wheat cultivars in Faisalabad conditions, a study was planned at Agronomic Research Area, University of Agriculture, Faisalabad during 2009-2010. Split plot design with irrigation levels in main plots and cultivars in sub-plots was implied. Irrigation levels were: IT = irrigation at tillering stage, ITS = irrigation at tillering and stem elongation stage, ISB = irrigation at stem elongation and booting stage and ITSBG = irrigation at tillering, stem elongation, booting and grain filling stage. Cultivars selected were: Faisalabad-2008, Lasani-2008, Miraj-2008, Shafaq-2006 and Chakwal-97. Irrigation treatment ITSBG gave higher grain yield (4.23 t·ha-1) followed by ISB (3.60 t·ha-1), however ITSBG was statistically similar to ISB in radiation use efficiency (RUE) for grain yield (RUEGY). Similarly the two treatments were statistically at par in maximum leaf area index, total dry matter (TDM) accumulation, cumulative photosynthetically active radiation (PAR), and RUETDM. Hence where less numbers of irrigations are available, irrigation at stem elongation and booting stage is suitable for achieving economic yield. Lasani-2008 produced maximum grain yield (4.37 t·ha-1) compared to other cultivars but it was statistically at par with Shafaq-2006 in plant height, TDM production and RUETDM. Depending on the availability, the two cultivars may be chosen under irrigated conditions of Faisalabad.展开更多
Objective To investigate the role of matrix metalloproteinase-1 （MMP-1）/protease- activated receptor-1 （PAR-l） signaling in the cervical cancer invasion. Methods RT-PCR was used to test the mRNA level of MMP-1 in ...Objective To investigate the role of matrix metalloproteinase-1 （MMP-1）/protease- activated receptor-1 （PAR-l） signaling in the cervical cancer invasion. Methods RT-PCR was used to test the mRNA level of MMP-1 in 59 cases of cervical squamous cell cancer. Cell invasion was evaluated by Transwell assay to explore the effect of adding human recombinant MMP-1 （rhMMP-1） and PARI-siRNA on cervical cancer invasion. Results In cervical cancer tissues, more MMP-1 expression was observed than that in the normal cervical tissues, and its expression correlated with cancer status. Human recombinant MMP-1 （rhMMP-1） could promote Hela cell invasion, and its number of invasive cell correlated with the concentration of rhMMP-1. Disrupting the expression of PAR-1 reduced the MMP-1 promoting-effect on Hela cell invasion, but had no effect on non-MMP-1 invasive action. Conclusion The MMP-1/PAR-1 signaling pathway is involved in cervical cancer invasion. Therefore, blocking PAR-1 may represent a new therapeutic option for metastatic cervical cancer.展开更多
文摘目的探讨内皮细胞蛋白C受体(endothelial protein C receptor,EPCR)对乳腺癌增殖、迁移的影响及机制研究。方法采用siRNA技术降低人乳腺癌MCF-7细胞中EPCR的表达;添加抗PAR-1抗体阻断PAR-1作用,然后采用CCK-8检测细胞的增殖能力、Transwell检测迁移能力、Cell-ELISA检测EPCR对PAR-1活性的影响。结果 EPCR干扰后,与空白对照组及无关序列组相比,EPCR干扰组MCF-7细胞的增殖及迁移能力均明显降低(P<0.05)。抗PAR-1抗体处理后,与空白对照组相比,PAR-1抗体处理组细胞的增殖迁移能力均明显降低(P<0.05)。并且Cell-ELISA结果显示EPCR干扰组未裂解活化的PAR-1抗体结合率明显升高(P<0.05)。结论 EPCR可以通过活化PAR-1促进人乳腺癌MCF-7细胞增殖迁移。
文摘Climate and weather conditions greatly affect the performance of new wheat cultivars for yield and resource use efficiency. In order to know the effect of irrigation schedules based on growth stage (the most vital criterion in the region) on growth, yield and radiation use efficiency of wheat cultivars in Faisalabad conditions, a study was planned at Agronomic Research Area, University of Agriculture, Faisalabad during 2009-2010. Split plot design with irrigation levels in main plots and cultivars in sub-plots was implied. Irrigation levels were: IT = irrigation at tillering stage, ITS = irrigation at tillering and stem elongation stage, ISB = irrigation at stem elongation and booting stage and ITSBG = irrigation at tillering, stem elongation, booting and grain filling stage. Cultivars selected were: Faisalabad-2008, Lasani-2008, Miraj-2008, Shafaq-2006 and Chakwal-97. Irrigation treatment ITSBG gave higher grain yield (4.23 t·ha-1) followed by ISB (3.60 t·ha-1), however ITSBG was statistically similar to ISB in radiation use efficiency (RUE) for grain yield (RUEGY). Similarly the two treatments were statistically at par in maximum leaf area index, total dry matter (TDM) accumulation, cumulative photosynthetically active radiation (PAR), and RUETDM. Hence where less numbers of irrigations are available, irrigation at stem elongation and booting stage is suitable for achieving economic yield. Lasani-2008 produced maximum grain yield (4.37 t·ha-1) compared to other cultivars but it was statistically at par with Shafaq-2006 in plant height, TDM production and RUETDM. Depending on the availability, the two cultivars may be chosen under irrigated conditions of Faisalabad.
基金supported by the project of Shanghai Municipal Health Bureau(2011160)
文摘Objective To investigate the role of matrix metalloproteinase-1 （MMP-1）/protease- activated receptor-1 （PAR-l） signaling in the cervical cancer invasion. Methods RT-PCR was used to test the mRNA level of MMP-1 in 59 cases of cervical squamous cell cancer. Cell invasion was evaluated by Transwell assay to explore the effect of adding human recombinant MMP-1 （rhMMP-1） and PARI-siRNA on cervical cancer invasion. Results In cervical cancer tissues, more MMP-1 expression was observed than that in the normal cervical tissues, and its expression correlated with cancer status. Human recombinant MMP-1 （rhMMP-1） could promote Hela cell invasion, and its number of invasive cell correlated with the concentration of rhMMP-1. Disrupting the expression of PAR-1 reduced the MMP-1 promoting-effect on Hela cell invasion, but had no effect on non-MMP-1 invasive action. Conclusion The MMP-1/PAR-1 signaling pathway is involved in cervical cancer invasion. Therefore, blocking PAR-1 may represent a new therapeutic option for metastatic cervical cancer.
