FIELD: biotechnology.
SUBSTANCE: invention relates to biotechnology, specifically to recombinant systems for expression of immunogenic proteins, and can be used in medicine to stimulate immune response. Vector for expression in a mammalian cell comprising a first nucleotide sequence which codes a secreted fused gp96-Ig fusion protein, and a second nucleotide sequence which is co-expressed with said first nucleotide sequence and which codes a fusion protein of costimulatory T-cells. T-cell fusion protein is selected from OX40L-Ig or a portion of said protein which binds to OX40, ICOSL-Ig or a portion of said protein which binds to ICOS, 4-lBBL-Ig or a portion of said protein which binds to 4-1BBR, TL1A-Ig or a portion of said protein which binds to TNFRSF25, GITRL-Ig or a portion of said protein which binds to GITR, CD40L-Ig or a portion of said protein which binds to CD40, and CD70-Ig or a portion of said protein that binds with CD27.
EFFECT: invention provides enhanced activation of antigen-specific T-cells during co-expression of fused protein, which is costimulating T-cells, with secreted fused gp96-Ig protein in a subject.
41 cl, 18 dwg, 3 ex
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