The aim of this study was to analyze the correlation of the expression of MET and cyclin D1 and MET gene copy number in non-small cell lung cancer （NSCLC） tissues and patient clinicopathologic characteristics and su...The aim of this study was to analyze the correlation of the expression of MET and cyclin D1 and MET gene copy number in non-small cell lung cancer （NSCLC） tissues and patient clinicopathologic characteristics and sur- vival. Sixty-one NSCLC tissue specimens were included in the study. The expression of MET and cyclin D1 was evaluated by immunohistochemistry and MET gene copy number was assessed by quantitative real-time polymer- ase chain reaction （Q-PCR）. Positive expression of MET and cyclin D1 protein and increased MET gene copy number occurred in 59.0%, 59.0% and 18.0% of 61 NSCLC tissues, respectively. MET-positivity correlated with poor differentiation （P = 0.009）. Increased MET gene copy number was significantly associated with lymph node metastasis （P = 0.004） and advanced tumor stage （P = 0.048）, while the expression of cyclin D1 was not associ- ated with any clinicopathologic parameters. There was a significant correlation between the expression of MET and MET gene copy number （P = 0.002）. Additionally, the expression of cyclin D1 had a significant association with the expression of MET as well as MET gene copy number （P = 0.002 and P = 0.017, respectively）. MET- positivity and increased MET gene copy number were significantly associated with poor overall survival （P = 0.003 and P 〈 0.001, respectively） in univariate analysis. Multivariate Cox proportional hazard analysis confirmed that the expression of MET and MET gene copy number were prognostic indicators of NSCLC （P = 0.003 and P = 0.001, respectively）. The overexpression of MET and the increased MET gene copy number might be adverse prognostic factors for NSCLC patients. The activation of the MET/cyclin D1 signaling pathway may contribute to carcino- genesis and the development of NSCLC, and may represent a target for therapy.展开更多
目的分析胃癌人群中癌基因MET、人表皮生长因子受体2(HER-2)的蛋白表达及其与临床病理学特征的关系,为探索其对胃癌根治术患者复发及生存的预测价值。方法收集2007年2月20日至2013年2月20日来接受手术切除的胃或胃食管交界处腺癌患者标...目的分析胃癌人群中癌基因MET、人表皮生长因子受体2(HER-2)的蛋白表达及其与临床病理学特征的关系,为探索其对胃癌根治术患者复发及生存的预测价值。方法收集2007年2月20日至2013年2月20日来接受手术切除的胃或胃食管交界处腺癌患者标本共180例。采用En Vi Sion免疫组化法和FISH法对每个标本中的MET和HER2进行其相关的基因阳性表达水平进行检测,并对二者与患者的相关个人信息、病变部位、肿瘤的分化程度、有无转移等相关信息之间的线性相关关系进行研究。观察免疫组化评分与荧光原位杂交检测HER2的高表达与基因扩增之间的重叠率。统计患者两年内病死率。结果通过对180例胃癌患者进行免疫组化以及FISH方法检测HER2发现,HER2和MET的阳性表达率是40.0%和31.1%,基因扩增率是36.7%和34.4%,HER2和MET的高表达与基因扩增之间的重叠率是73.6%和78.6%,各个免疫组化间的重叠率比较差异有显著性(P<0.01)。MET表达与患者的个人信息、病变大小、病变部位以及是否出现淋巴道转移无关(P>0.05),而与分化程度、临床分期以及是否出现门脉侵犯有关(P<0.05);HER2表达与患者的个人信息、是否出现门脉侵犯、病变部位、是否出现淋巴道转移以及临床分期无关(P>0.05),而与分化程度与病变大小有关(P<0.05)。经过为期2年的随访工作发现,死亡率为33.3%(60/180),其中54例患者在检测过程中呈MET和HER2的双向高度表达。结论 MET和HER2的共同高度表达与胃癌患者病死率之间有相关性,HER2与肿瘤的分化程度和病变大小有关,MET与肿瘤分化程度和门脉侵犯有关,为今后临床上对胃癌患者癌基因的检测结果分析提供了重要的生物学资料。展开更多
基金supported in part by a grant from the Nature Science Foundation of Health Bureau of Shaanxi Province(#08D28)
文摘The aim of this study was to analyze the correlation of the expression of MET and cyclin D1 and MET gene copy number in non-small cell lung cancer （NSCLC） tissues and patient clinicopathologic characteristics and sur- vival. Sixty-one NSCLC tissue specimens were included in the study. The expression of MET and cyclin D1 was evaluated by immunohistochemistry and MET gene copy number was assessed by quantitative real-time polymer- ase chain reaction （Q-PCR）. Positive expression of MET and cyclin D1 protein and increased MET gene copy number occurred in 59.0%, 59.0% and 18.0% of 61 NSCLC tissues, respectively. MET-positivity correlated with poor differentiation （P = 0.009）. Increased MET gene copy number was significantly associated with lymph node metastasis （P = 0.004） and advanced tumor stage （P = 0.048）, while the expression of cyclin D1 was not associ- ated with any clinicopathologic parameters. There was a significant correlation between the expression of MET and MET gene copy number （P = 0.002）. Additionally, the expression of cyclin D1 had a significant association with the expression of MET as well as MET gene copy number （P = 0.002 and P = 0.017, respectively）. MET- positivity and increased MET gene copy number were significantly associated with poor overall survival （P = 0.003 and P 〈 0.001, respectively） in univariate analysis. Multivariate Cox proportional hazard analysis confirmed that the expression of MET and MET gene copy number were prognostic indicators of NSCLC （P = 0.003 and P = 0.001, respectively）. The overexpression of MET and the increased MET gene copy number might be adverse prognostic factors for NSCLC patients. The activation of the MET/cyclin D1 signaling pathway may contribute to carcino- genesis and the development of NSCLC, and may represent a target for therapy.
文摘目的分析胃癌人群中癌基因MET、人表皮生长因子受体2(HER-2)的蛋白表达及其与临床病理学特征的关系,为探索其对胃癌根治术患者复发及生存的预测价值。方法收集2007年2月20日至2013年2月20日来接受手术切除的胃或胃食管交界处腺癌患者标本共180例。采用En Vi Sion免疫组化法和FISH法对每个标本中的MET和HER2进行其相关的基因阳性表达水平进行检测,并对二者与患者的相关个人信息、病变部位、肿瘤的分化程度、有无转移等相关信息之间的线性相关关系进行研究。观察免疫组化评分与荧光原位杂交检测HER2的高表达与基因扩增之间的重叠率。统计患者两年内病死率。结果通过对180例胃癌患者进行免疫组化以及FISH方法检测HER2发现,HER2和MET的阳性表达率是40.0%和31.1%,基因扩增率是36.7%和34.4%,HER2和MET的高表达与基因扩增之间的重叠率是73.6%和78.6%,各个免疫组化间的重叠率比较差异有显著性(P<0.01)。MET表达与患者的个人信息、病变大小、病变部位以及是否出现淋巴道转移无关(P>0.05),而与分化程度、临床分期以及是否出现门脉侵犯有关(P<0.05);HER2表达与患者的个人信息、是否出现门脉侵犯、病变部位、是否出现淋巴道转移以及临床分期无关(P>0.05),而与分化程度与病变大小有关(P<0.05)。经过为期2年的随访工作发现,死亡率为33.3%(60/180),其中54例患者在检测过程中呈MET和HER2的双向高度表达。结论 MET和HER2的共同高度表达与胃癌患者病死率之间有相关性,HER2与肿瘤的分化程度和病变大小有关,MET与肿瘤分化程度和门脉侵犯有关,为今后临床上对胃癌患者癌基因的检测结果分析提供了重要的生物学资料。
