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Anti-inflammatory effects of physalin E from Physalis angulata on lipopolysaccharide-stimulated RAW 264.7 cells through inhibition of NF-κB pathway.
Immunopharmacology and Immunotoxicology 2017 April
Physalin E is a naturally occurring seco-steroid isolated from the stems and aerial parts of Physalis angulata L. (Solanaceae). This study was aimed to explore the anti-inflammatory effects of physalin E on RAW 264.7 mouse macrophages stimulated by lipopolysaccharide (LPS) and the potential underlying mechanisms. The results showed that physalin E significantly inhibited LPS-induced tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) expression and secretion in a dose-dependent manner. Unlike dexamethasone, these effects could not be blocked by miferstone (RU486). Meanwhile, physalin E reduced the degradation of I-kappa B protein in the cytoplasm and downregulated the nuclear factor-κB (NF-κB) p65 protein in the nuclear, which resulted in the inhibition of the NF-κB nuclear translocation. In conclusion, physalin E exerts its anti-inflammatory activities in LPS-induced macrophages. Physalin E can inhibit the production of inflammatory cytokines by targeting the NF-κB signaling pathway.
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