Characterization of suppressor T cells in graft-versus-host reactions.
Intravenous (i.v.) immunization of mice with irradiated (2000 rads) allogeneic lymphoid cells induces the generation of suppressor T cells. Such suppressor T cells can suppress the anti-host delayed type hypersensitivity (DTH) by other T cells during acute Graft-versus-Host reactions in irradiated recipient mice. Suppression of anti-host DTH is detectable at least 50 days after i.v. induction of the state of suppression in the donors. The generation of suppressor T cells in the donors is associated with proliferation. Furthermore, the suppressor T cells need to proliferate further in the irradiated allogeneic hosts in order to display a maximal suppressive effect. Two types of suppressor T cells were found to be required for suppression of the anti-host DTH response: a Lyt-1+2- cell population and a Lyt-1-2+ cell population.
Bril
H
H
Molendijk-Lok
B D
BD
Hussaarts-Odijk
L M
LM
Benner
R
R
D000818:Animals; D000950:Antigens, Ly / Q000032:analysis; D002455:Cell Division; D006087:Graft vs Host Reaction; D007114:Immunization; D008213:Lymphocyte Activation; D051379:Mice; D008815:Mice, Inbred Strains; D050378:T-Lymphocytes, Regulatory / Q000276:immunology*; D013997:Time Factors
D000950:Antigens, Ly