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KMID : 0545120180280101635
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Journal of Microbiology and Biotechnology
2018 Volume.28 No. 10 p.1635 ~ p.1644
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Anti-Inflammatory Effect of Asterias amurensis Fatty Acids through NF-κB and MAPK Pathways against LPS-Stimulated RAW264.7 Cells
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Monmai Chaiwat
Go Seok-Hyeon
Shin Il-Sik
You Sang-Guan
Kim Dae-Ok
Kang Seok-Beom
Park Woo-Jung
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Abstract
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Asterias amurensis (starfish) is a marine organism that is harmful to the fishing industry, but is also a potential source of functional materials. The present study was conducted to analyze the profiles of fatty acids extracted from A. amurensis tissues and their anti-inflammatory effects on RAW264.7 macrophage cells. In different tissues, the component ratios of saturated fatty acids, monounsaturated fatty acids, and polyunsaturated fatty acids differed; particularly, polyunsaturated fatty acids such as dihomo-gamma-linolenic acid (20:3n-6) and eicosapentaenoic acid (20:5n-3) were considerably different. In lipopolysaccharide-stimulated RAW264.7 cells, fatty acids from A. amurensis skin, gonads, and digestive glands exhibited anti-inflammatory activities by reducing nitric oxide production and inducing nitric oxide synthase gene expression. Asterias amurensis fatty acids effectively suppressed the expression of inflammatory cytokines such as tumor necrosis factor-α, interleukin-1β, and interleukin-6 in lipopolysaccharide-stimulated cells. Cyclooxygenase-2 and prostaglandin E2, which are critical inflammation biomarkers, were also significantly suppressed. Furthermore, A. amurensis fatty acids reduced the phosphorylation of nuclear factor-κB p-65, p38, extracellular signal-related kinase 1/2, and c-Jun N-terminal kinase, indicating that these fatty acids ameliorated inflammation through the nuclear factor-κB and mitogen-activated protein kinase pathways. These results provide insight into the anti-inflammatory mechanism of A. amurensis fatty acids on immune cells and suggest that the species is a potential source of anti-inflammatory molecules.
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KEYWORD
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Astrias amurensis, fatty acids, anti-inflammation, nuclear factor-κB pathway, mitogen-activated protein kinase pathway
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