Abstract
In vitro treatment with 2 μg/2×106 cells melphalan (l-PAM: l-phenylalanine mustard) significantly decreased the total number of T lymphocytes from peripheral blood (PBL) of healthy human donors and of the OKT4 population (precursor suppressor/helper/inducer) T cells as defined by monoclonal antibodies OKT3 and OKT4, respectively. No changes in the OKT8+lymphocyte population (cytotoxic/mature suppressor cells) were observed following the same treatment. Preincubation of PBL with l-PAM at concentrations that do not affect the rate of DNA synthesis in PHA-stimulated lymphocytes inhibited the generation of T suppressor lymphocytes by ConA, as shown by their effect on PHA stimulation. Treatment of allogeneic PBL with l-PAM had no effect on mature suppressor T cells already induced by Con A, as shown by incubation of PBL with l-PAM after incubation with ConA.
Original language | English |
---|---|
Pages (from-to) | 53-56 |
Number of pages | 4 |
Journal | Cancer Immunology, Immunotherapy |
Volume | 19 |
Issue number | 1 |
DOIs | |
State | Published - Feb 1985 |
Externally published | Yes |