Activation of human B lymphocytes. V. Kinetics and mechanisms of suppression of plaque-forming cell responses by concanavalin A-generated suppressor cells.

Journal Article (Journal Article)

The kinetics and mechanisms of suppression of the PWM-induced PFC response of human PB lymphocytes by Con A-activated suppressor cells were investigated. It was necessary that Con A suppressor cells be present early in the process of activation of human B cells toward antibody syntheses, but maximal suppression of the PFC response occurred later in the culture period. In addition, Con A-activated cells, although suppressing the PFC response to PWM greater that 90% of control, did not significantly suppress the blastogenic response to PWM after 3 or 5 days in culture. On the contrary, after 3 days in culture, background tritiated thymidine incorporation as well as tritiated thymidine incorporation to PWM stimulation was increased when Con A suppressor cells are added to fresh autologous peripheral blood lymphocytes. This increased blastogenic response after three days most likely represented an autologous mixed lymphocyte reaction (MLR) or Con A suppressor cells against fresh autologous non-T cells. The induction of autoreactive cells may be one of several modes of suppression of PFC responses by Con A activated suppressor cells.

Full Text

Duke Authors

Cited Authors

  • Haynes, BF; Fauci, AS

Published Date

  • March 1, 1978

Published In

Volume / Issue

  • 120 / 3

Start / End Page

  • 700 - 708

PubMed ID

  • 147296

International Standard Serial Number (ISSN)

  • 0022-1767


  • eng

Conference Location

  • United States