title: Differential inhibition of lymphocyte function by 2-chloroadenosine.
abstract: The effects of 2-chloroadenosine, a poorly metabolized adenosine analogue, on some human lymphocyte functions were studied. Mixed lymphocyte responses were strongly inhibited by very low concentrations of 2-chloroadenosine. The mitogen-induced proliferation of human lymphocytes was also generally suppressed by 2-chloroadenosine in a dose dependent manner. Blastogenesis induced by Con A and PWM was severely inhibited by low doses of 2-chloroadenosine while its inhibition of that induced by PHA was less marked. Natural killer cell activity was inhibited only about 55% by high concentrations of 2-chloroadenosine. These results suggested that many subsets of human lymphocytes are controlled by adenosine receptor.
mesh_terms: D015762:2-Chloroadenosine; D000241:Adenosine / Q000031:analogs & derivatives* / Q000494:pharmacology; D002470:Cell Survival / Q000187:drug effects; D003602:Cytotoxicity, Immunologic / Q000187:drug effects; D006801:Humans; D007166:Immunosuppressive Agents / Q000494:pharmacology*; D066298:In Vitro Techniques; D007694:Killer Cells, Natural / Q000187:drug effects; D008213:Lymphocyte Activation / Q000187:drug effects; D008214:Lymphocytes / Q000187:drug effects*; D013936:Thymidine / Q000378:metabolism
chemical_list: D007166:Immunosuppressive Agents; D015762:2-Chloroadenosine; D000241:Adenosine; D013936:Thymidine