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Abstract
The current study was designed to test the ability of recombinant Vaccinia virus (rVV) encoding essential components of an artificial antigen-presenting cell to activate antigen-specific T cells in vitro. We have constructed a set of rVV encoding separately or in combination a CD4+ T cell-specific epitope (the 133-145 peptide of chicken conalbumin), the MHC class II molecule I-Ak, and costimulatory molecules (mB7-1 and mB7-2). Cultured cells infected with rVV encoding both the antigen and the presenting MHC, but not either one alone, could activate cloned CD4+ T cells specific for the virus-encoded epitope. Additional co-expression of mB7-1 and mB7-2 resulted in further enhancement of T cell response. Thus, our rVV vector expressing four different foreign gene products elicited the highest proliferation rates of antigen-specific cloned T cells.
View details for Web of Science ID A1997YA90400023
View details for PubMedID 9353162