Journal
JOURNAL OF MEDICINAL CHEMISTRY
Volume 54, Issue 13, Pages 4590-4599Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jm200241s
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Funding
- MAREX [245137]
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Recently, we reported the identification of a novel class of pregnane-X-receptor (PXR) agonists, solomonsterols A and B, isolated from the marine sponge Theonella swinhoei. Preliminary pharmacological studies demonstrated that these natural compounds are potential leads for the treatment of human disorders characterized by dysregulation of innate immunity. In this article, we describe the first total synthesis of solomonsterol A and its in vivo characterization in animal models of colitis. Using transgenic mice expressing the human PXR, we found that administration of synthetic solomonsterol A effectively protects against development of clinical signs and symptoms of colitis and reduced the generation of TNF alpha, a signature. cytokine for this disorder. In addition, we have provided the first evidence that solomonsterol A might act by triggering the,expression of TGF beta and IL-10, potent counter regulatory cytokines in inflammatory bowel diseases (IBD). Finally, we have shown that solomonsterol A inhibits NF-kappa B activation by a PXR dependent mechanism. In summary, solomonsterol A is a marine PXR agonist that holds promise in the treatment of inflammation-driven immune dysfunction in clinical settings.
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