Antibody-dependent cellular cytotoxicity by allosensitized human T cells
- PMID: 146728
- PMCID: PMC2184507
- DOI: 10.1084/jem.147.2.605
Antibody-dependent cellular cytotoxicity by allosensitized human T cells
Abstract
Peripheral human T cells, isolated by sheep erythrocyte-rosette formation and density centrifugation, were highly cytotoxic to both Ab-coated autologous lymphocytes and antibody (Ab)-coated chicken erythrocytes when stimulated in mixed lymphocyte culture, but were not lytic when freshly purified, or when unstimulated in 6-day culture. Allosensitized T cells were shown to effect this activity by a specific effector-target cell interaction dependent on Ab, as indicated by: (a) induction of killing by Ab to target cells not lysed in the absence of Ab. (b) inhibition of Ab-dependent killing by aggregated Ig. The mechanism by which allosensitized T cells effect antibody-dependent cellular cytotoxicity is discussed.
