title: Proteomics-based identification of proteins with altered expression induced by 12-O-tetradecanoylphorbol 13-acetate in nasopharyngeal carcinoma CNE2 cells.
abstract: Nasopharyngeal carcinoma (NPC) is a malignancy with high incidence in Southern China and South-East Asia. Etiology studies indicate that chemical carcinogen promoters, such as 12-O-tetradecanoylphorbol-13-acetate (TPA), are important factors causing NPC development. However, the mechanism of the TPA effect on NPC remains unclear. In the present study, cells from a poorly differentiated squamous cell carcinoma NPC cell line, CNE2, were stimulated by TPA and proteomics technology was carried out to find protein discrepancies between control and TPA-treated cells. Results revealed that TPA treatment in CNE2 cells could upregulate the expression of "triosephosphate isomerase" and "14-3-3 protein sigma" and downregulate the expression of "reticulocalbin 1 precursor", "nucleophosmin", "mitochondrial matrix protein p1 precursor", and "stathmin". The changes in the expression of these genes suggested that TPA induced CNE2 cells to antiproliferation and to apoptosis, which was confirmed by subsequent apoptosis detection. Therefore, the effects of TPA on nasopharyngeal carcinoma cells were distinct from the effects on primary epithelial cells and we suggest reasons for these differences.
authors.affiliation: Cancer Research Institute, Southern Medical University, Guangzhou 510515, China.
authors.forename: Pei-Zhou
authors.initials: PZ
authors.lastname: Jiang
authors.forename: Ming
authors.initials: M
authors.lastname: Gan
authors.forename: Hua
authors.initials: H
authors.lastname: Huang
authors.forename: Xin-Ming
authors.initials: XM
authors.lastname: Shen
authors.forename: Shuang
authors.initials: S
authors.lastname: Wang
authors.forename: Kai-Tai
authors.initials: KT
authors.lastname: Yao
mesh_terms: D017304:Annexin A5; D045744:Cell Line, Tumor; D005434:Flow Cytometry; D015972:Gene Expression Regulation, Neoplastic / Q000187:drug effects*; D006801:Humans; D009303:Nasopharyngeal Neoplasms / Q000235:genetics / Q000378:metabolism*; D010449:Peptide Mapping; D011506:Proteins / Q000032:analysis* / Q000235:genetics; D040901:Proteomics / Q000295:instrumentation / Q000379:methods*; D020133:Reverse Transcriptase Polymerase Chain Reaction; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; D013755:Tetradecanoylphorbol Acetate / Q000031:analogs & derivatives* / Q000494:pharmacology*
chemical_list: D017304:Annexin A5; D011506:Proteins; C032975:12-O-tetradeca-2,4,6,8-tetranoylphorbol-13-acetate; D013755:Tetradecanoylphorbol Acetate