title: [Expressions of heat shock protein in cervical cancer and precancerosis].
abstract: OBJECTIVE
  To investigate the expressions of main subtypes of heat shock protein (HSP) in cervical cancer and precancerosis tissues.
  
  
  METHODS
  According to the pathological diagnosis, 478 cases of cervical biopsy specimen were divided into invasive carcinoma of cervix group (63 cases), cervical intraepithelial neoplasia group (CIN, 106 cases), chronic cervicitis group (293 cases) and normal uterine cervix (16 cases).The expression levels of HSP70, HSP90a and HSP90beta3 mRNA were detected by quantitative RT-PCR with specific complex cRNA as internal control.
  
  
  RESULTS
  (1) The expressions of HSP70, HSP90a and HSP90beta mRNA were significantly down-trended stepwise in invasive carcinoma of cervix, CIN, chronic cervicitis and normal cervix tissue (P < 0.01, respectively). (2) In the invasive carcinoma of cervix group, the expression level of HSP90beta mRNA was higher in advanced stage (FIGO II b) compared with incipient(FIGO-II a) carcinoma of the cervix (P < 0.05). (3) The expressions of HSP70 and HSP90 mRNA were each higher in poorly differentiated tumor than in well-differentiated tumor (P < 0.05, respectively). (4) The expression levels of all three HSP mRNA had no significant differences, it was observed with different histological types of cervical cancer (P > 0.05).
  
  
  CONCLUSIONS
  Heat shock protein may play some important roles in malignant transformation of cervix cell and aggravation of cervix cancer. HSP70 and HSP90alpha may promote cancer cell transition and proliferation, and HSP90beta may participate in cell differentiation.
authors.affiliation: Department of Obstetrics and Gynecology, General Hospital of PLA, Beijing, 10085, China.
authors.forename: En-Feng
authors.initials: EF
authors.lastname: Zhao
authors.forename: Lei
authors.initials: L
authors.lastname: Bao
authors.forename: Long
authors.initials: L
authors.lastname: Liang
authors.forename: Dongping
authors.initials: D
authors.lastname: Li
mesh_terms: D002277:Carcinoma / Q000378:metabolism / Q000473:pathology; D005260:Female; D018840:HSP70 Heat-Shock Proteins / Q000378:metabolism*; D018841:HSP90 Heat-Shock Proteins / Q000378:metabolism*; D006801:Humans; D011230:Precancerous Conditions / Q000378:metabolism* / Q000473:pathology; D014407:Tumor Cells, Cultured; D002583:Uterine Cervical Neoplasms / Q000378:metabolism* / Q000473:pathology; D002575:Uterine Cervicitis / Q000378:metabolism* / Q000473:pathology
chemical_list: D018840:HSP70 Heat-Shock Proteins; D018841:HSP90 Heat-Shock Proteins