Comparative Proteome Analysis of Nasopharyngeal Carcinoma Cell Lines with an Immortalized Nasopharyngeal Epithelial Cell Line NP69
- VernacularTitle:鼻咽癌细胞系与永生化的鼻咽上皮细胞系蛋白质表达差异分析
- Author:
Xiaofang JIA
;
Ni SHI
;
Jixian XIONG
;
Jinyun XIE
;
Songping LIANG
- Publication Type:Journal Article
- Keywords:
nasopharyngeal carcinoma;
cell line;
mass spectrometry;
2 DE;
proteomics
- From:
Chinese Journal of Biochemistry and Molecular Biology
2008;24(1):11-19
- CountryChina
- Language:Chinese
-
Abstract:
Nasopharyngeal carcinoma (NPC) poses serious health problems in Southern China and yet the molecular mechanism of the carcinogenesis remains unclear. We used modern proteomic technologies to compare the protein expression profiles between the NPC cell lines (HNE1 and CNE1 ) and an immortalized nasopharyngeal epithelial cell line NP69 to identify cancer related proteins. Cell lysates were separated by two-dimensional gel electrophoresis (2 DE ) and analyzed by PDQuest software. The differentially expressed proteins were identified by matrix-assisted laser desorption/ionization tandem time-of-flight mass spectrometry (MALDI-TOF/TOF-MS). We discovered 15 up-regulated proteins and 18 down-regulated proteins in both HNE1 and CNE1 cell lines compared with NP69. These proteins are correlative with various functions, such as cell proliferation, apoptosis, cancer metastasis, metabolism, cytoskeleton and signal transduction. Western blotting analyses were further carried out to verify the differential expression of individual proteins. Several identified proteins in our research might be used as potential molecular markers to understand the molecular mechanism of NPC development and metastasis, and might be used as candidate targets for NPC treatments.
