Background： The Aurora-A （AurA） gene, a key regulator of mitosis, has been proved as an oncogene in a variety of cancers. The Aur-A overexpression has been proved correlated with aggressiveness of cancer cells. How...Background： The Aurora-A （AurA） gene, a key regulator of mitosis, has been proved as an oncogene in a variety of cancers. The Aur-A overexpression has been proved correlated with aggressiveness of cancer cells. However, the frequency of Aur-A protein overexpression, as well as its association with clinicopathologic parameters and prognosis remain unclear in lung adenocarcinoma （ADC）. This study tried to clarify the clinical significance of Aur-A in patients with resected lung ADC. Patients and methods： A total of 142 informative patients with surgically resected lung ADC and 20 normal lung tissues were enrolled. Western blot and immunohistochemistry （IHC） were utilized to assess protein expression of Aur-A. Result： The expression of Aur-A was elevated in most of tumor tissues compared with the adjacent tissues by western blot. The IHC results showed that Aur-A protein was over-expressed in 98 of 142 （69.0%） tumor sections, while Aur-A was low-expressed in all normal lung sections. A positive correlation between Aur-A overexpression rate and ascending pathologic stages was observed （P〈0.05）. Kaplan-Meier analysis demonstrated that patients with Aur-A high expression had significantly inferior survival compared to those with Aur-A low expression. Both overall survival （OS） and disease-free survival （DFS） of positive overexpression patients were shorter than the negative group （P=0.036, P=0.041, respectively）. Multivariate analysis confirmed that Aur-A expression, as an independent and significant factor for both DFS and OS, could predict a poor prognosis in patients with resected lung ADC （P=0.022, P=0.049, respectively）. Conclusions： Aur-A was overexpressed in lung ADC and overexpression of Aur-A might be a novel predictor for poor prognosis and potential therapeutic target in lung ADC.展开更多
目的:检测Aurora-A基因在NB中的表达情况,并探讨其与临床分期及预后的关系,旨在发现新型、独立有效的预后标记物。方法:本院2005年-2009年20例NB冻存组织和2007年-2010年15例伴有骨髓转移的NB骨髓标本。另取10例节细胞神经瘤冻存组织作...目的:检测Aurora-A基因在NB中的表达情况,并探讨其与临床分期及预后的关系,旨在发现新型、独立有效的预后标记物。方法:本院2005年-2009年20例NB冻存组织和2007年-2010年15例伴有骨髓转移的NB骨髓标本。另取10例节细胞神经瘤冻存组织作对照。采用实时荧光定量PCRSYBR Green I方法检测上述标本中Aurora-A基因mRNA的表达情况;采用SPSS 13.0软件进行统计学分析。结果:Aurora-A基因在10例节细胞神经瘤对照组中无表达,在35例NB标本中存在不同程度的表达,两组具有显著差异(P<0.01);Aurora-A基因在低分期组中低表达(0.225±0.096),高分期组中高表达(0.659±0.079)(P<0.01);Aurora-A基因表达水平的高低与年龄有关,小于1岁者表达低(0.392±0.163),大于等于1岁者表达高(0.578±0.237)(P<0.05);Aurora-A基因表达水平的高低与生存时间呈负相关(P<0.01)。结论:Aurora-A基因在恶性NB中高表达,可能参与NB的恶性增殖;Aurora-A基因高表达患儿预后不良,可作为NB分子生物学预后标记物。展开更多
基金supported by grants from the Guangdong Provincial Science &Technology Project of China (no 2009B060700036)the Guangdong Provincial Nature Foundation for Doctor Initiative of China (no S2011040002465)
文摘Background： The Aurora-A （AurA） gene, a key regulator of mitosis, has been proved as an oncogene in a variety of cancers. The Aur-A overexpression has been proved correlated with aggressiveness of cancer cells. However, the frequency of Aur-A protein overexpression, as well as its association with clinicopathologic parameters and prognosis remain unclear in lung adenocarcinoma （ADC）. This study tried to clarify the clinical significance of Aur-A in patients with resected lung ADC. Patients and methods： A total of 142 informative patients with surgically resected lung ADC and 20 normal lung tissues were enrolled. Western blot and immunohistochemistry （IHC） were utilized to assess protein expression of Aur-A. Result： The expression of Aur-A was elevated in most of tumor tissues compared with the adjacent tissues by western blot. The IHC results showed that Aur-A protein was over-expressed in 98 of 142 （69.0%） tumor sections, while Aur-A was low-expressed in all normal lung sections. A positive correlation between Aur-A overexpression rate and ascending pathologic stages was observed （P〈0.05）. Kaplan-Meier analysis demonstrated that patients with Aur-A high expression had significantly inferior survival compared to those with Aur-A low expression. Both overall survival （OS） and disease-free survival （DFS） of positive overexpression patients were shorter than the negative group （P=0.036, P=0.041, respectively）. Multivariate analysis confirmed that Aur-A expression, as an independent and significant factor for both DFS and OS, could predict a poor prognosis in patients with resected lung ADC （P=0.022, P=0.049, respectively）. Conclusions： Aur-A was overexpressed in lung ADC and overexpression of Aur-A might be a novel predictor for poor prognosis and potential therapeutic target in lung ADC.
文摘目的:检测Aurora-A基因在NB中的表达情况,并探讨其与临床分期及预后的关系,旨在发现新型、独立有效的预后标记物。方法:本院2005年-2009年20例NB冻存组织和2007年-2010年15例伴有骨髓转移的NB骨髓标本。另取10例节细胞神经瘤冻存组织作对照。采用实时荧光定量PCRSYBR Green I方法检测上述标本中Aurora-A基因mRNA的表达情况;采用SPSS 13.0软件进行统计学分析。结果:Aurora-A基因在10例节细胞神经瘤对照组中无表达,在35例NB标本中存在不同程度的表达,两组具有显著差异(P<0.01);Aurora-A基因在低分期组中低表达(0.225±0.096),高分期组中高表达(0.659±0.079)(P<0.01);Aurora-A基因表达水平的高低与年龄有关,小于1岁者表达低(0.392±0.163),大于等于1岁者表达高(0.578±0.237)(P<0.05);Aurora-A基因表达水平的高低与生存时间呈负相关(P<0.01)。结论:Aurora-A基因在恶性NB中高表达,可能参与NB的恶性增殖;Aurora-A基因高表达患儿预后不良,可作为NB分子生物学预后标记物。
