JTP-27536 [(+)-1,3-dihydroxy-2-hydroxymethylpropyl-2-ammonium 2-[(R)-3-cyclo-hexyl-1-phenylpropyl]-1,3-dioxo-2,3-dihydro-1H-isoindole-5-carboxylate monohydrate], a novel inhibitor of immunoglobulins and interleukin-5 with anti-inflammatory properties in mouse allergic dermatitis model.

Abstract

We report a novel synthetic compound JTP-27536 [(+)-1,3-dihydroxy-2-hydroxymethylpropyl-2-ammonium 2-[(R)-3-cyclohexyl-1-phenylpropyl]-1,3-dioxo-2,3-dihydro-1H-isoindole-5-carboxylate monohydrate] as an inhibitor of immunoglobulins (Igs) and interleukin (IL)-5 production in vitro and in vivo. JTP-27536 inhibited IgE production in mouse and human B cells with IC50 values of 2.5 and 2.1 microM, respectively, and the inhibition was stronger than that on IgG1 and IgM production (IC50 > 10 microM). JTP-27536 also inhibited IL-5 production in mouse splenocytes and human peripheral blood mononuclear cells with IC50 values of 3.3 and 1.3 microM, respectively, without affecting mouse interferon (IFN)-gamma, IL-2, IL-4, IL-10, or human IL-4 production. In contrast, prednisolone not only inhibited mouse IgE production but also mouse IFN-gamma, IL-2, IL-4, and IL-10 and human IL-4 and IL-5 production in vitro. The effect of suplatast tosilate, a Th2 cytokine inhibitor, on antibody and cytokine production was less potent than that of JTP-27536. In vivo animal experiments using dinitrophenylated ascaris-sensitized mice and 2,4,6-trinitro-1-chrolobenzene-induced chronic dermatitis mice showed that JTP-27536 was more potent than suplatast tosilate and comparable with prednisolone in inhibiting ear swelling, antigen-specific IgE and IL-5 production, and cell infiltrations into the inflamed tissue. These results indicate that JTP-27536 is an inhibitor of Igs, in particular IgE, and of IL-5, which has antiallergic properties in mouse dermatitis model, and suggest that an inhibitor of Igs and IL-5 like JTP-27536 may be useful as a drug for the treatment of allergic diseases.

• Authors: Takayuki Mimura, Yuichi Shinozaki, Hisashi Kawasaki, Hiroyuki Iwamura
• Journal: The Journal of pharmacology and experimental therapeutics (J Pharmacol Exp Ther) Vol. 314 Issue 1 Pg. 293-301 (Jul 2005) ISSN: 0022-3565 [Print] United States
• PMID: 15821026 (Publication Type: Journal Article)

Chemical References

• Anti-Inflammatory Agents
• Anti-Inflammatory Agents, Non-Steroidal
• Cyclohexanes
• Immunoglobulins
• Indoles
• Interleukin-5
• Isoindoles
• 1,3-dihydroxy-2-hydroxymethylpropyl-2-ammonium 2-((R)-3-cyclo-hexyl-1-phenylpropyl)-1,3-dioxo-2,3-dihydro-1H-isoindole-5-carboxylate monohydrate
• Immunoglobulin E
• Prednisolone
• Picryl Chloride

Topics

• Animals
• Anti-Inflammatory Agents (pharmacology)
• Anti-Inflammatory Agents, Non-Steroidal (pharmacology, therapeutic use)
• Antibody Formation (drug effects)
• Antibody Specificity
• Ascaris (immunology)
• B-Lymphocytes (drug effects)
• Chronic Disease
• Cyclohexanes (pharmacology, therapeutic use)
• Dermatitis, Allergic Contact (drug therapy)
• Female
• Humans
• Immunoglobulin E (drug effects)
• Immunoglobulins (drug effects)
• Indoles (pharmacology, therapeutic use)
• Interleukin-5 (antagonists & inhibitors)
• Isoindoles
• Mice
• Mice, Inbred BALB C
• Picryl Chloride
• Prednisolone (pharmacology)
• Spleen (cytology)