Murine HIV p24 specific T lymphocyte activation by different antigen presenting cells: B lumphocytes from immunised mice present core protein to T-cells
Maingay, J P.
Howie, S. E. M.
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Fyfe, L., Maingay, J. & Howie, S. (1993) Murine HIV p24 specific T lymphocyte activation by different antigen presenting cells: B lumphocytes from immunised mice present core protein to T-cells. Immunology Letters, 35(1), pp. 45-50.
Mice were injected with three doses of baculovirus-produced recombinant HIV-1 p24 core protein in alum adjuvant. CD4 positive T lymphocytes from immunized animals proliferated in vitro in the presence of antigen and peritoneal macrophages (Mps) or splenic dendritic cells (DCs) from non-immunized mice as antigen presenting cells (APCs). DCs were approximately three times more efficient than Mps on a cell for cell basis. No synergy was observed between Mps and DCs in this system. B lymphocytes from immunized animals also presented p24 antigen to the specific T cells. Mps did synergize with B cells to enhance the level of T lymphocyte proliferation. This may have implications for the induction of specific immune responses to pathogens after administration of single protein vaccines.