RT Journal Article
SR Electronic
T1 Inhibition of human cytotoxic T lymphocyte activity in vitro by autologous peripheral blood granulocytes.
JF The Journal of Immunology
JO J. Immunol.
FD American Association of Immunologists
SP 230
OP 234
VO 134
IS 1
A1 Petrie, H T
A1 Klassen, L W
A1 Kay, H D
YR 1985
UL http://www.jimmunol.org/content/134/1/230.abstract
AB Peripheral blood granulocytes from normal healthy donors were found to reproducibly inhibit the cytolytic effector function of specifically sensitized cytotoxic T lymphocytes in vitro when co-incubated with these effector cells and target cells in 8 hr 51Cr release assays. Inhibition required intact granulocytes, was proportional to the number of granulocytes present, and was independent of granulocyte adherence, phagocytic function, and viability. Equivalent numbers of enriched normal or leukemic peripheral T lymphocytes did not cause inhibition of 51Cr release, and preincubation of granulocytes with effectors did not significantly alter viability or cytotoxic function. Because granulocytes can inhibit natural killer cell function in vitro, these data indicate that granulocytes can regulate diverse antigen-specific and spontaneous cytotoxic functions in vitro, suggesting that circulating granulocytes may have the potential for in vivo regulation of these cytotoxic effectors.