Abstract
Synthetic lipopeptides derived from the N-terminus of bacterial lipoprotein constitute potent immunoadjuvants for parenteral and mucosal immunization. When combined with tetanus toxoid (TT) or gliadin as antigens, the lipopeptide N-palmitoyl-S-[2,3-bis(palmitoyloxy)-(2RS)-propyl]-(R)-cysteinyl-seryl-(lysyl)(3)-lysine (P(3)CSK(4)) markedly enhanced the specific antibody levels. Lipopeptides also act as macrophage/monocyte activators: P(3)CSK(4) induced nitric oxide release from bone marrow-derived macrophages (BMDM) of LPS responder and nonresponder mice. The antitumoral effect of the lipopeptide was demonstrated by a strong cytostatic activity of the lipopeptide-treated macrophages against the murine B-cell lymphoma cell line Abelson 8-1. The chemically well-defined lipopeptides can be synthesized with high purity and reproducibility and constitute ideal agents to be combined with antigens/vaccines or antitumor treatment.
MeSH terms
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Adjuvants, Immunologic / administration & dosage
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Adjuvants, Immunologic / pharmacology*
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Animals
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Antibody Formation / drug effects*
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Antibody Formation / immunology
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Bone Marrow Cells / drug effects
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Bone Marrow Cells / immunology
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Bone Marrow Cells / metabolism
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Cell Division / drug effects
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Cytotoxicity, Immunologic
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Female
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Gliadin / immunology
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Lipoproteins / administration & dosage
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Lipoproteins / pharmacology*
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Lymphoma, B-Cell / immunology
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Lymphoma, B-Cell / pathology
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Macrophage Activation / drug effects
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Macrophage Activation / immunology
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Macrophages / drug effects
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Macrophages / immunology
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Macrophages / metabolism
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Male
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Mice
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Mice, Inbred BALB C
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Nitric Oxide / metabolism
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Tetanus Toxoid / administration & dosage
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Tetanus Toxoid / immunology
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Tumor Cells, Cultured
Substances
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Adjuvants, Immunologic
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Lipoproteins
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Tetanus Toxoid
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N-palmitoyl-S-(2,3-bis(palmitoyloxy)propyl)cysteinyl-seryl-lysyl-lysyl-lysyl-lysine
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Nitric Oxide
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Gliadin