title: Inhibition of macrophage function by 2-chloroadenosine.
abstract: The inhibitory action of 2-chloroadenosine (2-CA) on murine macrophages was investigated by means of concanavalin A (Con A)-induced T-cell proliferative response and of in vitro antibody response to sheep red blood cells (SRBC). The viability of peritoneal exudate cells (PEC) markedly decreased when treated with 0.1 mM 2-CA at 37 degrees C for 2 hr before cell cultures. Morphological changes were also observed in PEC treated with 2-CA. When spleen cells were treated with 2-CA or macrophages were depleted from the spleen cells, Con A-induced proliferative responses were markedly reduced unless normal spleen adherent cells (SAC) were added back to the cultures. However, reduced response could not be restored to the control level by the addition of 2-CA-treated SAC. AntiSRBC antibody response was also suppressed by pretreatment of spleen cells with 2-CA when adenosine was not present during the period of the treatment. Therefore, 2-CA is a useful cytotoxic agent for inhibiting the accessory functions of macrophages.
mesh_terms: D015762:2-Chloroadenosine; D000241:Adenosine / Q000031:analogs & derivatives* / Q000494:pharmacology; D000818:Animals; D000917:Antibody Formation / Q000187:drug effects; D001202:Ascitic Fluid / Q000166:cytology / Q000187:drug effects / Q000276:immunology; D001667:Binding, Competitive / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D003208:Concanavalin A / Q000494:pharmacology; D003602:Cytotoxicity, Immunologic / Q000187:drug effects; D005260:Female; D007165:Immunosuppression Therapy; D008198:Lymph Nodes / Q000166:cytology / Q000187:drug effects / Q000276:immunology; D008213:Lymphocyte Activation / Q000187:drug effects; D008264:Macrophages / Q000187:drug effects / Q000276:immunology*; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D008811:Mice, Inbred DBA; D013154:Spleen / Q000166:cytology / Q000187:drug effects / Q000276:immunology
chemical_list: D003208:Concanavalin A; D015762:2-Chloroadenosine; D000241:Adenosine