Objective:To investigate the relationship between CYPIA1 genetic polymorphisms and the invasion and metastasis of breast cancer.Methods:The CYP1A1 gene polymorphism(an T-C transversion at nucleotide position 3801)was ...Objective:To investigate the relationship between CYPIA1 genetic polymorphisms and the invasion and metastasis of breast cancer.Methods:The CYP1A1 gene polymorphism(an T-C transversion at nucleotide position 3801)was detected by the polymerase chain reaction and restriction fragment length polymorphism in 80 cases with breast cancer and 60 samples of normal breast tissue.The difference in genotypic distribution frequency between the groups,the correlation between the genotypes and the factors related to prognosis were analyzed.Results:The incidence of homozygous and variant genotypes had no difference between the breast cancer group and controls group(P=0.746).The proportion of variant genotype increased as clinical stage(P=0.006)advanced,as well as with increased numbers of lymph node metastases(P=0.010).Conclusions:In patients with breast cancer there is a correlation between the CYP1A1 CC allele and some factors indicating poor prognosis,including more lymph node metastases as well as a more advanced clinical stage.展开更多
目的:检测乳腺癌转移抑制(BRMS1)基因在不同转移习性的人鼻咽癌细胞株中的表达情况。方法:应用免疫组织化学法和逆转录聚合酶链式反应法在m RNA和蛋白2方面检测人鼻咽癌细胞株高分化磷癌、低分化磷癌、低分化细胞株、高成瘤高转移性细...目的:检测乳腺癌转移抑制(BRMS1)基因在不同转移习性的人鼻咽癌细胞株中的表达情况。方法:应用免疫组织化学法和逆转录聚合酶链式反应法在m RNA和蛋白2方面检测人鼻咽癌细胞株高分化磷癌、低分化磷癌、低分化细胞株、高成瘤高转移性细胞株、低成瘤低转移性细胞株中BRMS1的表达。结果:5种细胞株中BRMS1的蛋白表达皆为阳性,在不同转移习性的细胞株中其表达强度明显不同。4种细胞株中扩增出BRMS1 m RNA,而BRMS1 m RNA在高转移性细胞株中未扩增出,高分化鳞癌、低分化鳞癌、低分化细胞株BRMS1 m RNA表达水平均显著高于低成瘤低转移性细胞株(P<0.01)。结论:BRMS1的表达与细胞株的转移能力有明显相关性,表明BRMS1可能作为鼻咽癌细胞转移的重要指标。展开更多
基金supported by Guangzhou Municipal Science and Technology Support Program(No:10A32060573)
文摘Objective:To investigate the relationship between CYPIA1 genetic polymorphisms and the invasion and metastasis of breast cancer.Methods:The CYP1A1 gene polymorphism(an T-C transversion at nucleotide position 3801)was detected by the polymerase chain reaction and restriction fragment length polymorphism in 80 cases with breast cancer and 60 samples of normal breast tissue.The difference in genotypic distribution frequency between the groups,the correlation between the genotypes and the factors related to prognosis were analyzed.Results:The incidence of homozygous and variant genotypes had no difference between the breast cancer group and controls group(P=0.746).The proportion of variant genotype increased as clinical stage(P=0.006)advanced,as well as with increased numbers of lymph node metastases(P=0.010).Conclusions:In patients with breast cancer there is a correlation between the CYP1A1 CC allele and some factors indicating poor prognosis,including more lymph node metastases as well as a more advanced clinical stage.
基金国家重点基础研究发展(973)规划项目(No.2002CB513107)国家自然科学基金项目(No.30528012)+3 种基金海南省教育厅高校科研基金项目(No.HjKj200747)Supported by the Major State Basic Research Development Program of China(No.2002CB513107)National Natural Science Foundation of China(No.30528012)the Research Fund of Higher Education of Hainan Ministry of Education(No.Hjkj200747)
文摘目的:检测乳腺癌转移抑制(BRMS1)基因在不同转移习性的人鼻咽癌细胞株中的表达情况。方法:应用免疫组织化学法和逆转录聚合酶链式反应法在m RNA和蛋白2方面检测人鼻咽癌细胞株高分化磷癌、低分化磷癌、低分化细胞株、高成瘤高转移性细胞株、低成瘤低转移性细胞株中BRMS1的表达。结果:5种细胞株中BRMS1的蛋白表达皆为阳性,在不同转移习性的细胞株中其表达强度明显不同。4种细胞株中扩增出BRMS1 m RNA,而BRMS1 m RNA在高转移性细胞株中未扩增出,高分化鳞癌、低分化鳞癌、低分化细胞株BRMS1 m RNA表达水平均显著高于低成瘤低转移性细胞株(P<0.01)。结论:BRMS1的表达与细胞株的转移能力有明显相关性,表明BRMS1可能作为鼻咽癌细胞转移的重要指标。