FIELD: biotechnologies.
SUBSTANCE: invention refers to creation of recombinant plasmids providing expression of poly-epitopic tumour-associated antigens in dendritic cells capable of stimulation of specific cytocidal cells, and it may be used in medicine. Recombinant plasmid DNA pCI-UB-POLYEPI contains 11 epitopes of tumour-associated antigens of colorectal cancer, its size is 6 355 n. p. and it expresses the following amino acid sequence: DYKDDDDK-LLGVGTFVV-ADRIW-GLKAGVIAV-AAYARY-VLAFGLLLA-ADRIW-YQLDPKFITSI-AAYARY-IMIGVLVGV-ADRIW-YLSGADLNL-AAYARY-CGIQNSVSA-AAYARY-LLLLTVLTV-ADRIW-QYIKANSKFIGlTEL-ANIY-SIINFEKL-ARY-SASFDGWATVSVIAL-ARY-SERVRTYWIIIELKHKARE-ARY-IQNDTGFYTLHVIKSDLVNEE. Mature dendritic cells obtained by adding to immature dendritic cells of pro-inflammatory TNF-α (tumour necrosis factor) cytokine are transfected by constructed plasmid DNA pCl-UB-POLYEPI thus activating them. Then activated dendritic cells are cultured together with peripheral mononuclear blood cells of people sick with colorectal cancer for generation of antigen-specific antitumour cytocidal cells.
EFFECT: invention allows efficient generation of antigen-specific cytocidal cell with antitumour activity in vitro, required for immune response by the 1-st type T-helper to colorectal cancer antigens.
2 cl, 1 dwg, 4 ex
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