title: Cell survival curve for primary hepatic carcinoma cells and relationship between SF(2) of hepatic carcinoma cells and radiosensitivity.
abstract: OBJECTIVE
  To establish the cell survival curve for primary hepatic carcinoma cells and to study the relationship between SF(2) of primary hepatic carcinoma cells and radiosensitivity.
  
  
  METHODS
  Hepatic carcinoma cells were cultured in vitro using 39 samples of hepatic carcinoma at stages II-IV. Twenty-nine samples were cultured successfully in the fifth generation cells. After these cells were radiated with different dosages, the cell survival ratio and SF(2) were calculated by clonogenic assay and SF(2) model respectively. The relationship between SF(2) and the clinical pathological feature was analyzed.
  
  
  RESULTS
  Twenty-nine of thirty-nine samples were successfully cultured. After X-ray radiation of the fifth generation cells with 0, 2, 4, 6, 8 Gy, the cell survival rate was 41%, 36.5%, 31.0%, 26.8%, and 19%, respectively. There was a negative correlation between cell survival and irradiation dosage (r = -0.973, P<0.05). SF(2) ranged 0.28-0.78 and correlated with the clinical stage and pathological grade of hepatic carcinoma (P<0.05). There was a positive correlation between SF(2) and D0.5 (r = 0.773, P<0.05).
  
  
  CONCLUSIONS
  SF(2) correlates with the clinical stage and pathological grade of hepatic carcinoma and is a marker for predicting the radiosensitivity of hepatic carcinomas.
authors.affiliation: Institute of Liver Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei Province, China. whzzl@163.net
authors.forename: Zhi-Zhong
authors.initials: ZZ
authors.lastname: Liu
authors.forename: Wen-Ying
authors.initials: WY
authors.lastname: Huang
authors.forename: Ju-Sheng
authors.initials: JS
authors.lastname: Lin
authors.forename: Xiao-Sheng
authors.initials: XS
authors.lastname: Li
authors.forename: Xiao
authors.initials: X
authors.lastname: Lan
authors.forename: Xiao-Kun
authors.initials: XK
authors.lastname: Cai
authors.forename: Kuo-Huan
authors.initials: KH
authors.lastname: Liang
authors.forename: Hai-Jun
authors.initials: HJ
authors.lastname: Zhou
mesh_terms: D000328:Adult; D000368:Aged; D000818:Animals; D006528:Carcinoma, Hepatocellular / Q000473:pathology* / Q000532:radiotherapy*; D018929:Cell Culture Techniques; D002470:Cell Survival; D004307:Dose-Response Relationship, Radiation; D006801:Humans; D008113:Liver Neoplasms / Q000473:pathology* / Q000532:radiotherapy*; D008875:Middle Aged; D009367:Neoplasm Staging; D011836:Radiation Tolerance; D014407:Tumor Cells, Cultured