Comparative Proteome Analysis of Human Lung Squamous Carcinoma Tissue  

作　　者：LI Cui TANG Can＇e DUAN Chaojun YI Hong XIAO Zhiqiang CHEN Zhuchu 

机构地区：[1]Key Laboratory of Cancer Proteomics of Chinese Ministry of Health, Xiangya Hospital, Central South University, Changsha 410008, China [2]Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha 410078, China

出　　处：《The Chinese-German Journal of Clinical Oncology》2006年第4期232-239,共8页中德临床肿瘤学杂志（英文版）

摘　　要：Objective： To establish the two-dimensional electrophoresis profiles with high resolution and reproducibility from human lung squamous carcinoma tissue and paired normal tumor-adjacent bronchial epithelial tissue, and to identify differential expression tumor-associated proteins by using proteome analysis. Methods： Comparative proteome analysis with 20 human lung squamous carcinoma tissues and the paired normal bronchial epithelial tissues adjacent to tumors was carried out. The total proteins of human lung squamous carcinoma tissue and paired normal tumor-adjacent bronchial epithelial tissue were separated by means of immobilized pH gradient-based two-dimensional gel electrophoresis （2-DE） and silver staining. The differential expression proteins were analyzed and then identified by matrix-assisted laser desorption/ionization time of flight mass spectrometry （MALDI-TOF-MS）. Results： （1） Well-resolved, reproducible 2-DE patterns of human lung squamous carcinoma and adjacent normal bronchial epithelial tissues were obtained. For tumor tissue, average spots of 3 gels were 1567±46, and 1436±54 spots were matched with an average matching rate of 91.6%. For control, average spots of 3 gels were 1349±58, and 1228±35 spots were matched with an average matching rate of 91.03%. The average position deviation of matched spots was 0.924±0.128 mm in IEF direction, and 1.022±0.205 mm in SDS-PAGE direction; （2） A total of 1178±56 spots were matched between the eleetrophoretie maps of 20 human lung squamous carcinoma tissues and paired normal tumor-adjacent bronchial epithelial tissues. Seventy-six differentially expressed proteins were screened; （3） Sixty-eight differential proteins were identified by PMF, some proteins were the products of oneogenes, and others involved in the regulation of cell cycle and signal transduetion; （4） In order to validate the reliability of the identified results, the expression of 3 proteins mdm2, c-jun and EGFR, which was correlated with lung squamous carcino

关 键 词：human lung squamous carcinoma tissue normal bronchial epithelial tissue PROTEOME differential expression protein 

分 类 号：R734.2[医药卫生—肿瘤]