Journal
FOOD AND CHEMICAL TOXICOLOGY
Volume 140, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.fct.2020.111321
Keywords
Ganoderma atrum polysaccharides; Anti-inflammatory effects; LPS; Macrophages; Caco-2/macrophages co-culture model
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Funding
- National Natural Science Foundation of China [81760737]
- National Key R&D Program of China [2017YFD0400203]
- Collaborative Project in Agriculture and Food Field China [2017ZJGH0102001]
- Collaborative Project in Agriculture and Food Field Canada [2017ZJGH0102001]
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Lipopolysaccharide (LPS)-induced inflammatory macrophages model and intestinal-like Caco-2/macrophages co-culture inflammation model were established to evaluate the anti-inflammatory effect and underlying mechanism of Ganoderma atrum polysaccharides (PSG-1). It was found that PSG-1 reduced LPS-induced secretion of pro-inflammatory cytokine (TNF-alpha, IL-6 and IL-1 beta), ROS levels, and inhibited the expression of COX-2 in LPS-stimulated inflammatory macrophages model and intestinal-like Caco-2/macrophages co-culture inflammation model. Furthermore, PSG-1 suppressed the LPS-induced activation of MAPKs signaling pathways, and regulated oxidative stress by activating the Nrf2/Keap1 signaling pathways. These above results indicated that PSG-1 not only has a direct anti-inflammatory effect in LPS-induced inflammatory macrophages model, but also has an indirect anti-inflammatory effect in intestinal-like Caco-2/macrophages co-culture inflammation model. These findings provide new insight of the mechanism underlying the anti-inflammatory activities of PSG-1, and facilitated the expansion of the application of PSG-1 in natural functional food.
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