首页|Aucubin suppresses lipopolysaccharide-induced pro-inflammatory responses by blocking the NF-κB translocation signaling pathways in activated microglial cells

Aucubin suppresses lipopolysaccharide-induced pro-inflammatory responses by blocking the NF-κB translocation signaling pathways in activated microglial cells

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? 2022 Phytochemical Society of EuropeAucubin is an iridoid glycoside with demonstrable hepatoprotective and anti-osteoporotic effects. Herein, using microglial cells and lipopolysaccharide (LPS) to induce inflammatory responses, we studied the signaling pathways involved in the anti-inflammatory action of aucubin and their influence on the expression of several genes known to be involved in inflammation. Aucubin inhibited LPS-stimulated pro-inflammatory responses by suppressing the production of nitric oxide and prostaglandin E2. Furthermore, aucubin inhibited inducible nitric oxide synthase and cyclooxygenase-2 at both the protein and mRNA levels. In addition, aucubin inhibited pro-inflammatory cytokine production in LPS-stimulated BV-2 microglial cells. Subsequent mechanistic studies revealed that aucubin inhibited the LPS-induced activation of nuclear factor-kappa B (NF-κB) translocation and phosphorylation of phosphatidylinositol 3-kinases (PI3K)/Akt as well as of mitogen-activated protein kinases (MAPKs), which are upstream molecules responsible for controlling inflammatory reactions. These results suggest that aucubin may exert anti-neuroinflammatory responses by suppressing the LPS-induced expression of pro-inflammatory mediators by blocking the activation of NF-κB, PI3K/Akt, and MAPK signaling pathways in microglial cells.

AucubinLipopolysaccharideMicroglial cellsNuclear factor-kappa BPro-inflammatory responses

Park Y.J.、Lim J.Y.、Kwon S.-H.、Shin M.-S.

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College of Pharmacy Kyungsung University

Department of Biological Sciences University of University of Maryland Baltimore County

Neuroregeneration and Stem Cell Programs Institute for Cell Engineering Department of Neurology Johns Hopkins University School of Medicine

College of Korean Medicine Gachon University

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2022

Phytochemistry Letters

Phytochemistry Letters

SCI
ISSN:1874-3900
年,卷(期):2022.48
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