title: The antagonistic action of cyclic GMP and cyclic AMP on proliferation of B and T lymphocytes.
abstract: The effect of c-AMP, c-GMP and both substances together on (3H)-thymidine incorporation into nuclear DNA was investigated using spleen cells of normal and athymic nude mice. c-GMP induces DNA synthesis in both normal and nude spleen cell populations. c-AMP inhibited the stimulatory activity of c-GMP as well as the phytohaemagglutinin (PHA) and lipopolysaccharide (LPS) response of spleen cells. The inhibitory activity of c-AMP on the PHA and LPS responses can be reversed by c-GMP. The possible role of cyclic nucleotides in the regulation of cell proliferation and of the immune response is discussed.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D001402:B-Lymphocytes / Q000187:drug effects*; D002455:Cell Division / Q000187:drug effects*; D002478:Cells, Cultured; D000242:Cyclic AMP / Q000494:pharmacology*; D006152:Cyclic GMP / Q000494:pharmacology*; D004247:DNA / Q000096:biosynthesis; D003864:Depression, Chemical; D005260:Female; D037102:Lectins / Q000494:pharmacology; D008070:Lipopolysaccharides / Q000494:pharmacology; D008213:Lymphocyte Activation / Q000187:drug effects*; D051379:Mice; D008807:Mice, Inbred BALB C; D013154:Spleen / Q000166:cytology; D013268:Stimulation, Chemical; D013601:T-Lymphocytes / Q000187:drug effects*; D013936:Thymidine / Q000378:metabolism
chemical_list: D037102:Lectins; D008070:Lipopolysaccharides; D004247:DNA; D000242:Cyclic AMP; D006152:Cyclic GMP; D013936:Thymidine