Modulation of tumour necrosis factor production with desmuramyldipeptide analogues
Some synthetic analogues of the immunomodulatory agent muramyl dipeptide (MDP), i.e. phthalimido- (LK-511, LK-413, LK-512, LK-423, LK-508), adamantyl- (LK-415, LK-517), 7-oxoalkyl-(LK-409) desmuramylpeptides were assessed for the tumour necrosis factor (TNF) inducing activity and the ability to modu...
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| Veröffentlicht in: | Pflügers Archiv 2000, Vol.440 (5 Suppl), p.R64 |
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| creator | Simcic, S Wraber, B Sollner, M Urleb, U Gobec, S |
| description | Some synthetic analogues of the immunomodulatory agent muramyl dipeptide (MDP), i.e. phthalimido- (LK-511, LK-413, LK-512, LK-423, LK-508), adamantyl- (LK-415, LK-517), 7-oxoalkyl-(LK-409) desmuramylpeptides were assessed for the tumour necrosis factor (TNF) inducing activity and the ability to modulate TNF production in in vitro phorbol 12-myristate 13-acetate (PMA) & ionomycin stimulated cultures of human peripheral blood mononuclear cells. A kinetic study over a 40-hour period indicated that desmuramyldipeptides were weak TNF inducers compared to romurtide, PMA & ionomycin or lipopolysaccharide. By contrast, they showed the potential to up- or down-regulate the production of TNF evoked by PMA & ionomycin, which was strongly dependent on the time of the stimulation. After 4h of stimulation, the TNF secretion was augmented by LK-508, LK-409 and LK-511, after 18 h by LK-409 and LK-423, and after 40 h by LK-423, LK-511, LK-415 and LK-512. However, LK-517 and LK-512 inhibited the secretion of TNF after the 18-h period. |
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A kinetic study over a 40-hour period indicated that desmuramyldipeptides were weak TNF inducers compared to romurtide, PMA & ionomycin or lipopolysaccharide. By contrast, they showed the potential to up- or down-regulate the production of TNF evoked by PMA & ionomycin, which was strongly dependent on the time of the stimulation. After 4h of stimulation, the TNF secretion was augmented by LK-508, LK-409 and LK-511, after 18 h by LK-409 and LK-423, and after 40 h by LK-423, LK-511, LK-415 and LK-512. 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A kinetic study over a 40-hour period indicated that desmuramyldipeptides were weak TNF inducers compared to romurtide, PMA & ionomycin or lipopolysaccharide. By contrast, they showed the potential to up- or down-regulate the production of TNF evoked by PMA & ionomycin, which was strongly dependent on the time of the stimulation. After 4h of stimulation, the TNF secretion was augmented by LK-508, LK-409 and LK-511, after 18 h by LK-409 and LK-423, and after 40 h by LK-423, LK-511, LK-415 and LK-512. 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| identifier | ISSN: 0031-6768 |
| ispartof | Pflügers Archiv, 2000, Vol.440 (5 Suppl), p.R64 |
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| subjects | Acetylmuramyl-Alanyl-Isoglutamine - analogs & derivatives Adjuvants, Immunologic - pharmacology Drug Combinations Humans Ionomycin - pharmacology Ionophores - pharmacology Monocytes - drug effects Monocytes - metabolism Tetradecanoylphorbol Acetate - pharmacology Time Factors Tumor Necrosis Factor-alpha - biosynthesis |
| title | Modulation of tumour necrosis factor production with desmuramyldipeptide analogues |
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