Normal spleen cells, when cultured with irradiated trinitrophenyl (TNP)-derivatized syngeneic spleen cells, develop cytotoxic effectors that lyse most effectiviely a TNP-derivatized target that is H-2 compatible with the effector. However, these effectors also lyse to a lesser extent TNP tumor and TNP spleen targets that are H-2 incompatible. This cross-reactive lysis correlates with the degree of cytolysis seen on the TNP-derivatized syngeneic target; it appears to be medicated by Thy 1.2-bearing cells and is inhibited by antisera to the K and/or D loci of the target cell and not by antisera to non-K or non-D surface antigens. Nonradiolabeled TNP-derivatized lymphoid cells syngeneic to either the stimulator or the target are able to competitively inhibit cross-reactive lysis, while TNP chicken red blood cells are unable to specifically inhibit lysis. These data on cross-reactive lysis of TNP-conjugated targets are most consistent with the altered-self hypothesis.
Cross-reactive lysis of trinitrophenyl (TNP)-derivatized H-2 incompatible target cells by cytolytic T lymphocytes generated against syngeneic TNP spleen cells.
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S J Burakoff, R N Germain, B Benacerraf; Cross-reactive lysis of trinitrophenyl (TNP)-derivatized H-2 incompatible target cells by cytolytic T lymphocytes generated against syngeneic TNP spleen cells.. J Exp Med 1 December 1976; 144 (6): 1609–1620. doi: https://doi.org/10.1084/jem.144.6.1609
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