3α-Angeloyloxy-ent-kaur-16-en-19-oic Acid Isolated from Wedelia trilobata L. Alleviates Xylene-Induced Mouse Ear Edema and Inhibits NF-κB and MAPK Pathway in LPS-Stimulated Macrophages

Uncontrolled inflammation is associated with many major diseases, and there is still an urgent need to develop new anti-inflammatory drugs. 3α-Angeloyloxy-ent-kaur-16-en-19-oic acid (WT-25) is an ent-kaurane dieterpenoid extracted from Wedelia trilobata, a medicinal plant with potential anti-inflamm...

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Veröffentlicht in:Journal of natural products (Washington, D.C.) D.C.), 2020-12, Vol.83 (12), p.3726-3735
Hauptverfasser: Xu, Jingwen, Zhou, Lei, Sun, Lianlian, Wang, Zhe, Wang, Yi, Wang, Yihai, He, Xiangjiu
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container_issue 12
container_start_page 3726
container_title Journal of natural products (Washington, D.C.)
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creator Xu, Jingwen
Zhou, Lei
Sun, Lianlian
Wang, Zhe
Wang, Yi
Wang, Yihai
He, Xiangjiu
description Uncontrolled inflammation is associated with many major diseases, and there is still an urgent need to develop new anti-inflammatory drugs. 3α-Angeloyloxy-ent-kaur-16-en-19-oic acid (WT-25) is an ent-kaurane dieterpenoid extracted from Wedelia trilobata, a medicinal plant with potential anti-inflammatory activity. The anti-inflammatory activity of WT-25 is better than that of its analog kaurenoic acid, but the underlying mechanism is still unknown. In this study, our aim was to study the anti-inflammatory effect of WT-25. In xylene-induced edema in mice, WT-25 produced 51% inhibition. WT-25 suppressed nitric oxide (NO) and prostaglandin E2 (PGE2) production in LPS-stimulated RAW264.7 cells by downregulating the expression of nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). WT-25 reduced expression and secretion of TNF-α and IL-6. Moreover, WT-25 inhibited NF-κB activation and its upstream signaling, decreasing phosphorylation IKK and p65 levels. WT-25 also inhibited the phosphorylation of the mitogen-activated protein kinases (MAPKs) family. Additionally, it reduced LPS-induced excessive release of reactive oxygen species (ROS) and maintained mitochondrial integrity in RAW264.7 cells. All these results indicate that WT-25 is a bioactive molecule with the potential to be developed as a novel structured anti-inflammatory drug.
doi_str_mv 10.1021/acs.jnatprod.0c00990
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title 3α-Angeloyloxy-ent-kaur-16-en-19-oic Acid Isolated from Wedelia trilobata L. Alleviates Xylene-Induced Mouse Ear Edema and Inhibits NF-κB and MAPK Pathway in LPS-Stimulated Macrophages
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