Furuya T, Kumazawa Y, Takimoto H, Nagumo T, Kiso M, Hasegawa A, Nomoto K. Effect of methyl esterification of isoglutamine residue in 6-O-acylated muramyl dipeptides on expression of immunopharmacological activities.
INTERNATIONAL JOURNAL OF IMMUNOPHARMACOLOGY 1991;
13:573-7. [PMID:
1783471 DOI:
10.1016/0192-0561(91)90078-l]
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Abstract
The effect of methyl esterification of the isoglutamine residue in 6-O-acylated muramyl dipeptide (MDP) on some biological activities was investigated. Methyl esterification influenced more or less the expression of all activities tested. The adjuvant and colony stimulating factor (CSF)-inducing activities of 6-O-acylated MDP analogs carrying a 3-hexadecanoyloxytetradecanoyl [C14-O-(C16)] group were stronger than those of the corresponding analogs carrying a 2-tetradecylhexadecanoyl (B30) group. Macrophage activation, i.e. induction of tumor necrosis factor (TNF) and promotion of phagocytosis, by 6-O-C14-O-(C16)-MDP methyl esters was weaker.
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