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Journal Article
Research Support, Non-U.S. Gov't
Penicillospirone from a marine isolate of Penicillium sp. (SF-5292) with anti-inflammatory activity.
Bioorganic & Medicinal Chemistry Letters 2017 August 2
Chemical investigation of the EtOAc extract of a marine-derived fungal isolate Penicillium sp. SF-5292 yielded a new polyketide-type metabolite, penicillospirone (1). The structure of 1 was determined by analysis of spectroscopic data such as 1D and 2D NMR spectra and MS data, and the final structure including absolute configuration was unambiguously established by single-crystal X-ray diffraction analysis. In the evaluation of its anti-inflammatory effects, 1 inhibited the overproduction of nitric oxide (NO) and prostaglandin E2 (PGE2 ) in lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages and BV2 microglia, and these inhibitory effects were correlated with the suppressive effect of 1 against overexpressions of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). Furthermore, 1 also inhibited the production of pro-inflammatory cytokines such as tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), IL-6, and IL-12. Overall, the anti-inflammatory effect of 1 was suggested to be mediated through the negative regulation of NF-κB pathway.
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