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Published on: March 18, 2019
Fumigaclavine C exhibits anti-inflammatory effects by suppressing high mobility group box protein 1 relocation and
Wanguo Yu1, Zhenghua Pan2, Yixiang Zhu2
1State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China; Key Laboratory for Processing of Sugar Resources of Guangxi Higher Education Institutes, Guangxi University of Science and Technology, 268 Donghuan Road, Liuzhou 545006, PR China.
Abstract:
A previous study demonstrated that Fumigaclavine C (FC) had a potential immunosuppressive activity against concanavalin A-induced hepatitis in mice. However, the precise mechanisms of the anti-inflammatory and hepatoprotective effects of FC are incompletely delineated. This study further investigated the protective effects of FC on lipopolysaccharide (LPS)-induced murine RAW264.7 cells and the underlying molecular mechanism in liver kupffer cells. FC differentially attenuated the production of tumor necrosis factor alpha (TNF-α), interleukin-1 beta (IL-1β), interleukin-6 (IL-6), interferon gamma (IFN-γ), and high mobility group box protein 1 (HMGB-1). Intriguingly, FC significantly suppressed LPS-induced HMGB-1 nucleo-cytoplasmic shuttling relocation and release. FC notably decreased the phosphorylation levels of phosphatidylinositol 3-kinase (PI3K), phosphoinositide-dependent kinase 1 (PDK1), protein kinase C beta II (PKCβII), and protein kinase C gamma (PKCγ). PKCβII/γ played an important part in this signaling pathway cascade. Furthermore, the docking simulation revealed that FC could directly bind to the HMGB-1 B box interfering with Lys90 and Leu145. All of these results indicated that FC exhibited anti-inflammatory and hepatoprotective effects through suppressing HMGB-1 relocation and release by interfering with Lys90 and Leu145.
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