摘要
目的 研究p63基因在非小细胞肺癌中的蛋白表达水平及与 3号染色体长臂 3 q2 7 3 q2 9区域改变的关系。方法 采用组织芯片技术构建 12 2例原发性非小细胞肺癌石蜡包埋标本组织芯片 ,并应用免疫组织化学方法检测 p63基因蛋白表达情况。应用比较基因组杂交 (CGH)技术分析 70例原发性肺鳞癌和肺腺癌标本染色体的改变。同时分析p63基因的蛋白表达与 3号染色体长臂末端改变的关系。结果 12 2例非小细胞肺癌 p63免疫组化染色结果显示 :5 9例鳞癌中 5 1例 ( 86.44 % ) p63免疫组化染色为阳性 ;3例大细胞肺癌中 2例 ( 66.66% )为阳性 ;60例腺癌仅有 1例 ( 1.67% )为阳性。p63蛋白的阳性表达率与患者的年龄、性别、肿瘤的分级、肿瘤的转移以及预后生存率无关 (P >0 .0 5 )。 70例非小细胞肺癌CGH分析结果发现有3 2例 3 q2 7 q2 9区域出现DNA扩增 ,3 0例鳞癌中 2 4例出现 3 q2 7 q2 9区域DNA拷贝数目的增加 ,40例腺癌仅 8例发现 3q2 7 q2 9区域DNA获得。p63免疫组化阳性率与 3q2 7 q2 9区域的改变比较分析结果显示 :2 4例鳞癌 p63阳性者中 ,2 3例 ( 95 .83 % ) 3 q2 7 q2 9区域有显著的获得 ,1例 p63基因蛋白表达呈阳性的腺癌患者的 3 q2 7 q2 9区域有DNA拷贝数目的增加。 结论 研究结果提示 p63免疫组化阳性?
Objective To investigate the relationship of p63 expression and p63 locus at chromosomal 3q27-q29 in non-small cell lung cancer (NSCLC). Methods Chromosomal imbalance in 30 cases of squamous cell carcinoma (SCC) and 40 cases of adenocarcinoma of the lung were evaluated by comparative genomic hybridization (CGH) technology. A tissue microarray of specimens from 122 primary NSCLC specimens was employed and used for immunohistochemical detection of p63 protein expression. Results p63 positivity was found in 54 (44.26%) cases of NSCLC. p63 immunostaining was observed in 51 (86.44%) of 59 SCC, whereas only one adenocarcinoma (1.67%) showed immunoreactivity. Immunopositivity was seen in 2 (66.66%) of 3 large cell lung cancer (LCLC). No correlation existed between p63 protein expression and the age of patient, sex, tumor grading, tumor metastasis, prognosis (P>0.05). The CGH results revealed that the gain of chromosome 3q27-q29 was identified in 32 (48.57%) of 70 NSCLC samples tested. Overrepresentation was detected in 24 cases of 30 SCC. In 40 adenocarcinoma, only 8 cases showed chromosome gain at chromosomal 3q27-q29. The comparison of p63 immunostaining with chromosomal alteration of 3q27-q29 demonstrated that pronounced gain was detected in 23 (95.83%) cases of 24 SCC with p63 immunopositivity. One case of adenocarcinoma that was p63 positive showed a chromosomal 3q27-q29 normal representation but not pronounced gain. Conclusion The results suggest that p63 immuno-positivity correlates significantly with pronounced gains of the p63 locus at chromosomal 3q27-q29, and p63 gene amplification correlates with development and progression of lung SCC.
出处
《中国肺癌杂志》
CAS
2004年第5期419-422,共4页
Chinese Journal of Lung Cancer
关键词
非小细胞肺癌
P63
组织芯片
比较基因组杂交
Non-smal cell lung cancer p63 Tissue microarray Comparative genomic hybridization
