title: [Experimental study on cytotoxic activity of antigen specific cytokine induced killer cells].
abstract: OBJECTIVE
  To prepare antigen specific cytokine induced killer(CIK) cells.
  
  
  METHODS
  Soluble antigen was prepared from tumor cells by repetitive freeze-thaw method. Cell killing activity is measured by MTT.
  
  
  RESULTS
  Cytotoxic activity was compared among CIK cells derived under three different conditions. (1) CIK cells prepared in the presence of the same tumor antigen fed dendritic cells (DC); (2) CIK cells prepared in the presence of DC without feeding the same tumor antigen; (3) CIK cells derived in the absence of DC. Among the three groups tested, DC-A-CIK cells showed the highest cytotoxic activity.
  
  
  CONCLUSIONS
  Soluble target tumor antigen fed DC can significantly enhance the specificity and cytotoxicity of CIK cells to tumor target cells.
authors.affiliation: Department of Hematology, Peking University First Hospital, Beijing 100034, China.
authors.forename: Jiren
authors.initials: J
authors.lastname: Yu
authors.forename: Yongjin
authors.initials: Y
authors.lastname: Shi
authors.forename: Xinan
authors.initials: X
authors.lastname: Cen
authors.forename: Yujun
authors.initials: Y
authors.lastname: Dong
mesh_terms: D000951:Antigens, Neoplasm; D055612:Cytokine-Induced Killer Cells / Q000166:cytology*; D016207:Cytokines; D003602:Cytotoxicity, Immunologic; D003713:Dendritic Cells; D006801:Humans
chemical_list: D000951:Antigens, Neoplasm; D016207:Cytokines