Effect of heptaminol AMP amidate, a new nucleotide derivative, on in vitro humoral immunity.
Heptaminol AMP amidate (HAA), a newly developed derivative of 5'-AMP, was found to potentiate the in vitro primary humoral immune response against T cell-dependent antigen, sheep red blood cells, when HAA was present in the early phase of spleen cell culture. Such a potentiating effect was not found against T cell-independent antigens such as lipopolysaccharide (LPS), trinitrophenylated (TNP)-LPS and TNP-Ficoll. The pattern of HAA-mediated immunopotentiation was similar to that of dibutyryl cyclic AMP. When HAA was added to the culture simultaneously with theophylline and imidazole, the immunopotentiating effect of HAA was further augmented and suppressed, respectively. The present results suggested that HAA-mediated immunopotentiation might be in some way related to the intracellular level of cyclic nucleotides in the early phase of culture.
Saha
A R
AR
Laboratory of Biochemical Pharmacology and Biotoxicology, Faculty of Pharmaceutical Sciences, Chiba University, Japan.
Ueno
K
K
Ohmori
S
S
Igarashi
T
T
Kitagawa
H
H
D000241:Adenosine / Q000494:pharmacology; D000249:Adenosine Monophosphate / Q000031:analogs & derivatives* / Q000494:pharmacology; D000605:Amino Alcohols / Q000494:pharmacology*; D000818:Animals; D000917:Antibody Formation / Q000187:drug effects*; D003994:Bucladesine / Q000494:pharmacology; D002478:Cells, Cultured; D004347:Drug Interactions; D006535:Heptaminol / Q000031:analogs & derivatives / Q000494:pharmacology*; D007093:Imidazoles / Q000494:pharmacology; D066298:In Vitro Techniques; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D013806:Theophylline / Q000494:pharmacology
D000605:Amino Alcohols; D007093:Imidazoles; D006535:Heptaminol; D000249:Adenosine Monophosphate; C053918:heptaminol AMP amidate; D003994:Bucladesine; D013806:Theophylline; D000241:Adenosine