目的观察脑膜瘤患者醛脱氢酶9家族成员A1(member of the aldehyde dehydrogenase 9 family A1,ALDH9 A1)、乙醛脱氢酶2(aldehyde dehydrogenase,ALDH2)蛋白表达情况,并分析其临床意义。方法选取2015年8月-2017年5月在我院接受治疗的60...目的观察脑膜瘤患者醛脱氢酶9家族成员A1(member of the aldehyde dehydrogenase 9 family A1,ALDH9 A1)、乙醛脱氢酶2(aldehyde dehydrogenase,ALDH2)蛋白表达情况,并分析其临床意义。方法选取2015年8月-2017年5月在我院接受治疗的60例脑膜瘤患者为观察组,选取同期在我院接受治疗的脑外伤患者60例作为对照组,观察两组ALDH9 A1、ALDH2蛋白表达情况,比较两组血管内皮生长因子(VEGF-A)、基质金属蛋白酶(MMP-9)、胰岛素样生长因子-2(IGF-Ⅱ)及其受体(IGF-ⅡR)水平的差异,分析脑膜瘤患者ALDH9 A1、ALDH2蛋白表达情况与VEGF-A、MMP-9、IGF-Ⅱ和IGF-ⅡR水平的相关性。结果观察组患者的ALDH9 A1阳性和ALDH2阳性表达率均高于对照组(χ2值=70.533、86.724,P<0.001);观察组患者的VEGF-A和MMP-9蛋白表达水平均高于对照组(t=-16.866、-15.162,P<0.001);观察组患者的IGF-Ⅱ阳性和IGF-ⅡR阳性表达率均高于对照组(χ2值=101.538、112.258,P<0.001);脑膜瘤患者的ALDH9 A1、ALDH2阳性表达率与VEGF-A、MMP-9水平和IGF-Ⅱ和IGF-ⅡR阳性表达率正相关(r=0.612、0.598、0.605、0.627、0.608、0.612、0.634、0.587,P<0.05)。结论脑膜瘤患者的ALDH9 A1、ALDH2蛋白阳性表达率较高,且与EGF-A、MMP-9水平和IGF-Ⅱ和IGF-ⅡR阳性表达率明显正相关。展开更多
Recent genome-wide association studies have identified several lung cancer susceptibility loci. We previously carried out a replication study in male Japanese smokers that focused on chromosome 5p15 (telomerase revers...Recent genome-wide association studies have identified several lung cancer susceptibility loci. We previously carried out a replication study in male Japanese smokers that focused on chromosome 5p15 (telomerase reverse transcriptase) and 3q28 (tumor protein p63) (Shimizu et al., Journal of Cancer Therapy, Vol. 2, No. 5, 2011, pp. 690-696). The current study was performed to confirm the association of traditional susceptibility loci [i.e., alcohol dehydrogenase 1C (ADH1C) and aldehyde dehydrogenase 2 (ALDH2)] in 1039 male Japanese smokers (573 lung cancer patients and 466 healthy control subjects) who were previously enrolled in a study to investigate the low odds ratio for lung cancer risk associated with functionally impaired and deletion polymorphisms in cytochrome P450 2A6 (CYP2A6). The minor allele frequency of rs671 in ALDH2 (0.304) was significantly higher in lung cancer cases than in controls (0.226), with an odds ratio of 1.42 [95% confidence interval (CI) of 1.12 - 1.80, p = 0.0033]. No significant association of rs698 in ADH1C with lung cancer risk was found in this population of male Japanese smokers. For light smokers categorized according to the 50th percentile Brinkman index value among the control subjects (620 daily cigarettes × years) and for the CYP2A6*1 wild-type non-carrier sub-population, significantly high odds ratios of 1.98 and 1.68 (95% CI of 1.28 - 3.06, p = 0.0022, and 1.07 - 2.66, p = 0.025), respectively, were observed for rs671 in ALDH2. The present results support the association of ALDH2 loci with lung cancers and suggest a specific effect of ALDH2 loci resulting in a higher risk of lung cancer in light smokers. CYP2A6 polymorphisms, including copy number polymorphisms, may lower the risk of heavy tobacco use-related lung cancer.展开更多
目的研究醛脱氢酶18家族成员A1(aldehyde dehydrogenase 18 family member A1,ALDH18A1)作为一种RNA结合蛋白在食管癌细胞(KYSE150细胞)中结合RNA的分子特征及对肿瘤生长的影响。方法通过体外培养人食管鳞癌细胞(KYSE150细胞)。同时,采...目的研究醛脱氢酶18家族成员A1(aldehyde dehydrogenase 18 family member A1,ALDH18A1)作为一种RNA结合蛋白在食管癌细胞(KYSE150细胞)中结合RNA的分子特征及对肿瘤生长的影响。方法通过体外培养人食管鳞癌细胞(KYSE150细胞)。同时,采用RNA免疫共沉淀技术研究细胞内RNA与蛋白结合情况,利用目标蛋白的抗体将相应的RNA-蛋白复合物沉淀下来,分离纯化捕获的RNA。分析ALDH18A1结合RNA的分子特征,并且对ALDH18A1结合靶基因进行京都基因与基因组百科全书聚类分析。结果蛋白质免疫印迹实验显示目的蛋白被抗体较好富集。ALDH18A1具有广泛的RNA结合活性,结合显著富集在编码区、内含子和5’非翻译区。ALDH18A1主要结合在RNA的UGUAAUC基序。聚类分析结果表明,ALDH18A1结合的RNA分子主要参与了在对焦点黏附、癌症的中心碳代谢、细胞周期、剪接体、RNA运输和泛素介导的蛋白水解等。结论ALDH18A1能结合RNA分子,可在食管癌相关基因的表达过程以及相关的生物学过程过程中发挥作用。展开更多
目的探究重组表达醛脱氢酶8A1(ALDH8A1)在胃癌组织中的表达情况及与临床病理参数的关系,并分析其对患者远期预后的影响。方法纳入2012年3月—2018年4月在蚌埠医科大学第一附属医院接受根治术治疗的109例胃癌患者,采用免疫组化法分析ALDH...目的探究重组表达醛脱氢酶8A1(ALDH8A1)在胃癌组织中的表达情况及与临床病理参数的关系,并分析其对患者远期预后的影响。方法纳入2012年3月—2018年4月在蚌埠医科大学第一附属医院接受根治术治疗的109例胃癌患者,采用免疫组化法分析ALDH8A1在胃癌及癌旁组织的表达情况,并运用统计学方法分析其与临床病理特征的关系;采用Kaplan-Meier曲线分析ALDH8A1的表达对胃癌患者术后5年生存率的影响。结果ALDH8A1在胃癌组织中的表达明显高于癌旁组织(P<0.001)。CEA≥5μg/L、CA19-9≥37 kU/L、癌细胞类型为腺癌、T3~4期及N2~3期患者ALDH8A1表达水平更高(P<0.05)。Kaplan-Meier曲线分析及多因素分析显示ALDH8A1高表达(HR=2.674,95%CI:1.293~5.533,P=0.008)可能会增加胃癌患者术后的死亡率。ROC曲线表明以2.555为截点值,ALDH8A1对胃癌患者预后具有较高的预判价值(灵敏度为68.97%,特异度为86.27%)。GO和KEGG富集分析显示ALDH8A1与细胞减数分裂、DNA结合和细胞周期等信号通路有关。结论ALDH 8 A 1在胃癌组织中高表达并促进胃癌的恶性进展,与预后不良相关。展开更多
文摘目的观察脑膜瘤患者醛脱氢酶9家族成员A1(member of the aldehyde dehydrogenase 9 family A1,ALDH9 A1)、乙醛脱氢酶2(aldehyde dehydrogenase,ALDH2)蛋白表达情况,并分析其临床意义。方法选取2015年8月-2017年5月在我院接受治疗的60例脑膜瘤患者为观察组,选取同期在我院接受治疗的脑外伤患者60例作为对照组,观察两组ALDH9 A1、ALDH2蛋白表达情况,比较两组血管内皮生长因子(VEGF-A)、基质金属蛋白酶(MMP-9)、胰岛素样生长因子-2(IGF-Ⅱ)及其受体(IGF-ⅡR)水平的差异,分析脑膜瘤患者ALDH9 A1、ALDH2蛋白表达情况与VEGF-A、MMP-9、IGF-Ⅱ和IGF-ⅡR水平的相关性。结果观察组患者的ALDH9 A1阳性和ALDH2阳性表达率均高于对照组(χ2值=70.533、86.724,P<0.001);观察组患者的VEGF-A和MMP-9蛋白表达水平均高于对照组(t=-16.866、-15.162,P<0.001);观察组患者的IGF-Ⅱ阳性和IGF-ⅡR阳性表达率均高于对照组(χ2值=101.538、112.258,P<0.001);脑膜瘤患者的ALDH9 A1、ALDH2阳性表达率与VEGF-A、MMP-9水平和IGF-Ⅱ和IGF-ⅡR阳性表达率正相关(r=0.612、0.598、0.605、0.627、0.608、0.612、0.634、0.587,P<0.05)。结论脑膜瘤患者的ALDH9 A1、ALDH2蛋白阳性表达率较高,且与EGF-A、MMP-9水平和IGF-Ⅱ和IGF-ⅡR阳性表达率明显正相关。
文摘Recent genome-wide association studies have identified several lung cancer susceptibility loci. We previously carried out a replication study in male Japanese smokers that focused on chromosome 5p15 (telomerase reverse transcriptase) and 3q28 (tumor protein p63) (Shimizu et al., Journal of Cancer Therapy, Vol. 2, No. 5, 2011, pp. 690-696). The current study was performed to confirm the association of traditional susceptibility loci [i.e., alcohol dehydrogenase 1C (ADH1C) and aldehyde dehydrogenase 2 (ALDH2)] in 1039 male Japanese smokers (573 lung cancer patients and 466 healthy control subjects) who were previously enrolled in a study to investigate the low odds ratio for lung cancer risk associated with functionally impaired and deletion polymorphisms in cytochrome P450 2A6 (CYP2A6). The minor allele frequency of rs671 in ALDH2 (0.304) was significantly higher in lung cancer cases than in controls (0.226), with an odds ratio of 1.42 [95% confidence interval (CI) of 1.12 - 1.80, p = 0.0033]. No significant association of rs698 in ADH1C with lung cancer risk was found in this population of male Japanese smokers. For light smokers categorized according to the 50th percentile Brinkman index value among the control subjects (620 daily cigarettes × years) and for the CYP2A6*1 wild-type non-carrier sub-population, significantly high odds ratios of 1.98 and 1.68 (95% CI of 1.28 - 3.06, p = 0.0022, and 1.07 - 2.66, p = 0.025), respectively, were observed for rs671 in ALDH2. The present results support the association of ALDH2 loci with lung cancers and suggest a specific effect of ALDH2 loci resulting in a higher risk of lung cancer in light smokers. CYP2A6 polymorphisms, including copy number polymorphisms, may lower the risk of heavy tobacco use-related lung cancer.
文摘目的研究醛脱氢酶18家族成员A1(aldehyde dehydrogenase 18 family member A1,ALDH18A1)作为一种RNA结合蛋白在食管癌细胞(KYSE150细胞)中结合RNA的分子特征及对肿瘤生长的影响。方法通过体外培养人食管鳞癌细胞(KYSE150细胞)。同时,采用RNA免疫共沉淀技术研究细胞内RNA与蛋白结合情况,利用目标蛋白的抗体将相应的RNA-蛋白复合物沉淀下来,分离纯化捕获的RNA。分析ALDH18A1结合RNA的分子特征,并且对ALDH18A1结合靶基因进行京都基因与基因组百科全书聚类分析。结果蛋白质免疫印迹实验显示目的蛋白被抗体较好富集。ALDH18A1具有广泛的RNA结合活性,结合显著富集在编码区、内含子和5’非翻译区。ALDH18A1主要结合在RNA的UGUAAUC基序。聚类分析结果表明,ALDH18A1结合的RNA分子主要参与了在对焦点黏附、癌症的中心碳代谢、细胞周期、剪接体、RNA运输和泛素介导的蛋白水解等。结论ALDH18A1能结合RNA分子,可在食管癌相关基因的表达过程以及相关的生物学过程过程中发挥作用。
文摘目的探究重组表达醛脱氢酶8A1(ALDH8A1)在胃癌组织中的表达情况及与临床病理参数的关系,并分析其对患者远期预后的影响。方法纳入2012年3月—2018年4月在蚌埠医科大学第一附属医院接受根治术治疗的109例胃癌患者,采用免疫组化法分析ALDH8A1在胃癌及癌旁组织的表达情况,并运用统计学方法分析其与临床病理特征的关系;采用Kaplan-Meier曲线分析ALDH8A1的表达对胃癌患者术后5年生存率的影响。结果ALDH8A1在胃癌组织中的表达明显高于癌旁组织(P<0.001)。CEA≥5μg/L、CA19-9≥37 kU/L、癌细胞类型为腺癌、T3~4期及N2~3期患者ALDH8A1表达水平更高(P<0.05)。Kaplan-Meier曲线分析及多因素分析显示ALDH8A1高表达(HR=2.674,95%CI:1.293~5.533,P=0.008)可能会增加胃癌患者术后的死亡率。ROC曲线表明以2.555为截点值,ALDH8A1对胃癌患者预后具有较高的预判价值(灵敏度为68.97%,特异度为86.27%)。GO和KEGG富集分析显示ALDH8A1与细胞减数分裂、DNA结合和细胞周期等信号通路有关。结论ALDH 8 A 1在胃癌组织中高表达并促进胃癌的恶性进展,与预后不良相关。
