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  • Title: Evidence for a significant role of CD4+ T cells in adoptive immunity to Listeria monocytogenes in the liver.
    Author: Rakhmilevich AL.
    Journal: Immunology; 1994 Jun; 82(2):249-54. PubMed ID: 7927496.
    Abstract:
    Although the ability of CD8+ T cells to adoptively immunize mice against Listeria monocytogenes in the spleen is well established, the role of different T-cell subsets in anti-bacterial protection in the liver, a major target of Listeria infection, remains unclear. Therefore, the ability of sorted CD4+ and CD8+ T cells to adoptively immunize mice against a L. monocytogenes infection in the liver was studied. The results show that positively sorted CD4+ T cells from day 7 Listeria-immune mice were as effective as sorted CD8+ cells in transferring significant anti-Listeria protection in the liver. Similar findings were obtained when CD4+ and CD8+ T cells, negatively selected by antibody-induced complement-mediated depletion in vitro, were used for adoptive transfer. CD8+ T cells, however, were more efficient than CD4+ T cells in transferring protection in the spleen. Taken together, the results show that CD4+ T cells are at least as protective as CD8+ T cells against a L. monocytogenes infection in the liver, thereby arguing against the view that CD4+ T cells are of limited importance in adoptive immunity against listeriosis.
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