title: [Proteinchip-flight mass spectrometry for screening differentially expressed proteins in the serum of cervical cancer patients].
abstract: OBJECTIVE
  To identify the differentially expressed proteins in the serum of patients with cervical cancer for use as the biomarkers for early diagnosis of cervical cancer.
  
  
  METHODS
  Surface-enhanced laser desorption/ionization time of flight mass spectrometry (SELDI-TOF-MS) with weak cationic chips (CM10) was used to examine the serum samples of 24 patients with cervical squamous cell carcinoma and 25 age-matched healthy women. The protein fingerprints were obtained, and bioinformatic analysis was performed to identify the differentially expressed proteins in the serum of the patients.
  
  
  RESULTS
  Fifty-two differentially expressed proteins were detected in the serum of cervical cancer patients (P<10(-5)), among which 6 proteins with mass/charge ratio of 4173.77, 5903.09, 6087.12, 10716.9, 6109.61 and 3397.41, respectively, showed lowered expression in the serum of cervical cancer patients. Two diagnostic models for cervical cancer were generated using software, including one consisting of the 4173.77(M/Z) protein with the diagnostic specificity of 96% and sensitivity of 75% for cervical cancer and the other consisting of 3 proteins at 5335.81(M/Z), 7562.99(M/Z), and 9287.89(M/Z) with specificity of 91.67% and sensitivity of 96.0%.
  
  
  CONCLUSIONS
  Cervical cancer patients show different serum protein expression profile from healthy women. The 6 differential proteins identified may serve as specific serum biomarkers in close relation to the origin and progression of cervical cancer.
authors.affiliation: Department Of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. caisina2224@163.com
authors.forename: Si-na
authors.initials: SN
authors.lastname: Cai
authors.forename: Guo-bing
authors.initials: GB
authors.lastname: Liu
authors.forename: Xiao-hong
authors.initials: XH
authors.lastname: Guo
authors.forename: Jian-guang
authors.initials: JG
authors.lastname: Chen
authors.forename: Jun
authors.initials: J
authors.lastname: Zhang
authors.forename: Yi-long
authors.initials: YL
authors.lastname: Wu
authors.forename: Wei-jiang
authors.initials: WJ
authors.lastname: Liang
authors.forename: Rong-cheng
authors.initials: RC
authors.lastname: Luo
mesh_terms: D000328:Adult; D000368:Aged; D014408:Biomarkers, Tumor / Q000097:blood*; D001798:Blood Proteins / Q000032:analysis*; D002294:Carcinoma, Squamous Cell / Q000097:blood* / Q000175:diagnosis; D005260:Female; D006801:Humans; D008875:Middle Aged; D012680:Sensitivity and Specificity; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / Q000379:methods; D002583:Uterine Cervical Neoplasms / Q000097:blood* / Q000175:diagnosis
chemical_list: D014408:Biomarkers, Tumor; D001798:Blood Proteins