title: Adjuvant activity of 6-O-mycoloyl derivatives of N-acetylmuramyl-L-seryl-D-isoglutamine and related compounds in mice and guinea pigs.
abstract: Adjuvant and antitumor activities of synthetic-6-O-mycoloyl-N-acetylmuramyl-L-seryl-D-isoglutamine and 6-O-mycoloyl-N-acetylmuramyl-glycyl-D-isoglutamine were examined in comparison with those of 6-O-mycoloyl-N-acetylmuramyl-L-alanyl-D-isoglutamine. Synthetic 6-O-mycoloyl-N-acetylmuramyl-L-seryl-D-isoglutamine was active as an adjuvant for the induction of delayed-type hypersensitivity to m-[4-(4'-arsono-phenylazo)-phenyl]-N-acetyl-L-tyrosine in guinea pigs and for cell-mediated cytotoxicity in allogeneic mice. 6-O-mycoloyl-N-acetylmuramyl-glycyl-D-isoglutamine was inactive as an adjuvant for the induction of delayed-type hypersensitivity in guinea pigs; however, it was active for cell-mediated cytotoxicity in allogeneic mice. 6-O-mycoloyl-N-acetylmuramyl-L-seryl-D-isoglutamine and 6-O-mycoloyl-N-acetylmuramyl-glycyl-D-isoglutamine were not pyrogenic in rabbits. The antitumor activity of these 6-O-mycoloyl-N-acetylmuramyldipeptides was examined preliminarily by using transplantable syngeneic mouse tumors.
mesh_terms: D000276:Adjuvants, Immunologic; D000818:Animals; D000917:Antibody Formation; D003602:Cytotoxicity, Immunologic; D006020:Glycopeptides / Q000276:immunology*; D006168:Guinea Pigs; D006968:Hypersensitivity, Delayed / Q000276:immunology; D007111:Immunity, Cellular; D007165:Immunosuppression Therapy; D008211:Lymphocyte Cooperation; D051379:Mice; D011749:Pyrogens; D013329:Structure-Activity Relationship; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D000276:Adjuvants, Immunologic; D006020:Glycopeptides; D011749:Pyrogens