目的探讨死亡相关蛋白5(DAP5)在胃癌组织中表达的预后价值及其对癌细胞有氧糖酵解的作用。方法采用公共数据库分析DAP5在胃癌及癌旁组织的表达及与患者预后的关系,纳入分析2012年6月~2017年7月于我院行胃癌根治术的患者102例,采用免疫...目的探讨死亡相关蛋白5(DAP5)在胃癌组织中表达的预后价值及其对癌细胞有氧糖酵解的作用。方法采用公共数据库分析DAP5在胃癌及癌旁组织的表达及与患者预后的关系,纳入分析2012年6月~2017年7月于我院行胃癌根治术的患者102例,采用免疫组织化学法检测DAP5在胃癌和癌旁组织中的表达情况;统计学分析DAP5与临床病理参数间的关系;K-M生存分析评估DAP5对胃癌患者术后5年生存率的影响;Cox回归评估影响患者术后5年生存率的独立危险因素;ROC曲线分析DAP5表达对患者术后5年生存率的预测价值;基因富集分析预测DAP5在胃癌中的功能;采用慢病毒调控胃癌细胞系(MGC-803)DAP5的表达,将实验分为空白对照组、DAP5敲低组和DAP5过表达组;葡萄糖摄取实验、细胞乳酸水平测定、实时荧光定量PCR及免疫印迹实验分析DAP5对胃癌细胞有氧糖酵解的作用。结果公共数据库分析显示DAP5在胃癌中高表达且与肿瘤进展及不良预后相关(P<0.05);免疫组化结果显示,胃癌组织中DAP5表达水平较癌旁组织显著增高(3.19±0.60 vs 1.00±0.12,P<0.01);K-M生存分析显示DAP5高表达组患者术后5年生存率较DAP5低表达组明显降低(17.6%,9/51 vs 72.5%,37/51,P<0.05);Cox回归分析进一步显示DAP5高表达、T3-4期、N2-3期、外周血CEA≥5 ng/mL是影响胃癌患者根治术后5年生存率的独立危险因素(P<0.05);ROC曲线分析表明DAP5评估胃癌患者术后5年生存率的敏感性为73.2%,特异性为80.4%,准确度为79.0%(P<0.01);体外实验显示,敲低DAP5可显著降低MGC-803细胞对葡萄糖摄取、乳酸水平及有氧糖酵解关键酶GLUT1、HK2、LDHA的mRNA和蛋白水平,过表达实验则相反(P<0.05)。结论DAP5在胃癌中高表达并与患者不良预后相关,其可能通过促进癌细胞有氧糖酵解进程影响癌症进展,有望成为评估胃癌患者远期预后的潜在生物学标志物。展开更多
Based on analyzing the changes of land use in Wuzhong District, Suzhou City from 2005 to 2008, temporal and spatial changes of land use from 2008 to 2020 were analyzed by using the model CLUE-S and, from the perspecti...Based on analyzing the changes of land use in Wuzhong District, Suzhou City from 2005 to 2008, temporal and spatial changes of land use from 2008 to 2020 were analyzed by using the model CLUE-S and, from the perspective of landscape ecology, future landscape pattern changes of land use in Wuzhong District were also quantitatively discussed by utilizing landscape indices. The results indicated that there was a large variation range of land use in Wuzhong District from 2005 to 2008 and massive farmland and woodland were transformed into construction land and gardens. Guided by the policy of saving intensive land and protecting farmland, future variation range of land use will get smaller obviously. The fragmentation degree for farmland, woodland and water area will get decreased but will get increased relatively for construction land. In general, all landscapes tend to a balanced development.展开更多
文摘目的探讨死亡相关蛋白5(DAP5)在胃癌组织中表达的预后价值及其对癌细胞有氧糖酵解的作用。方法采用公共数据库分析DAP5在胃癌及癌旁组织的表达及与患者预后的关系,纳入分析2012年6月~2017年7月于我院行胃癌根治术的患者102例,采用免疫组织化学法检测DAP5在胃癌和癌旁组织中的表达情况;统计学分析DAP5与临床病理参数间的关系;K-M生存分析评估DAP5对胃癌患者术后5年生存率的影响;Cox回归评估影响患者术后5年生存率的独立危险因素;ROC曲线分析DAP5表达对患者术后5年生存率的预测价值;基因富集分析预测DAP5在胃癌中的功能;采用慢病毒调控胃癌细胞系(MGC-803)DAP5的表达,将实验分为空白对照组、DAP5敲低组和DAP5过表达组;葡萄糖摄取实验、细胞乳酸水平测定、实时荧光定量PCR及免疫印迹实验分析DAP5对胃癌细胞有氧糖酵解的作用。结果公共数据库分析显示DAP5在胃癌中高表达且与肿瘤进展及不良预后相关(P<0.05);免疫组化结果显示,胃癌组织中DAP5表达水平较癌旁组织显著增高(3.19±0.60 vs 1.00±0.12,P<0.01);K-M生存分析显示DAP5高表达组患者术后5年生存率较DAP5低表达组明显降低(17.6%,9/51 vs 72.5%,37/51,P<0.05);Cox回归分析进一步显示DAP5高表达、T3-4期、N2-3期、外周血CEA≥5 ng/mL是影响胃癌患者根治术后5年生存率的独立危险因素(P<0.05);ROC曲线分析表明DAP5评估胃癌患者术后5年生存率的敏感性为73.2%,特异性为80.4%,准确度为79.0%(P<0.01);体外实验显示,敲低DAP5可显著降低MGC-803细胞对葡萄糖摄取、乳酸水平及有氧糖酵解关键酶GLUT1、HK2、LDHA的mRNA和蛋白水平,过表达实验则相反(P<0.05)。结论DAP5在胃癌中高表达并与患者不良预后相关,其可能通过促进癌细胞有氧糖酵解进程影响癌症进展,有望成为评估胃癌患者远期预后的潜在生物学标志物。
文摘Based on analyzing the changes of land use in Wuzhong District, Suzhou City from 2005 to 2008, temporal and spatial changes of land use from 2008 to 2020 were analyzed by using the model CLUE-S and, from the perspective of landscape ecology, future landscape pattern changes of land use in Wuzhong District were also quantitatively discussed by utilizing landscape indices. The results indicated that there was a large variation range of land use in Wuzhong District from 2005 to 2008 and massive farmland and woodland were transformed into construction land and gardens. Guided by the policy of saving intensive land and protecting farmland, future variation range of land use will get smaller obviously. The fragmentation degree for farmland, woodland and water area will get decreased but will get increased relatively for construction land. In general, all landscapes tend to a balanced development.
