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KMID : 1161420150180060677
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Journal of Medicinal Food
2015 Volume.18 No. 6 p.677 ~ p.684
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Anti-Inflammatory Effects of 3-(4′-Hydroxyl-3′,5′-Dimethoxyphenyl)Propionic Acid, an Active Component of Korean Cabbage Kimchi, in Lipopolysaccharide-Stimulated BV2 Microglia
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Jeong Jin-Woo
Choi Il-Whan
Jo Guk-Heui
Kim Gi-Young
Kim Jin-Woo
Suh Hong-Suk
Ryu Chung-Ho
Kim Wun-Jae
Park Kun-Young
Choi Yung-Hyun
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Abstract
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We investigated the protective ability of 3-(4′-hydroxyl-3′,5′-dimethoxyphenyl)propionic acid (HDMPPA), an active principle in Korean cabbage kimchi, against the production of proinflammatory mediators and cytokines, and the mechanisms involved in lipopolysaccharide (LPS)-stimulated BV2 microglial cells. HDMPPA significantly suppressed the production of nitric oxide (NO) and prostaglandin E2, along with the expression of inducible NO synthase and cyclooxygenase-2 in LPS-stimulated BV2 cells, at concentrations with no cytotoxicity. HDMPPA also attenuated the LPS-induced expression and secretion of proinflammatory cytokines, such as tumor necrosis factor-α and interleukin-1β. Furthermore, HDMPPA inhibited LPS-induced nuclear factor-κB (NF-κB) activation, which was associated with the abrogation of IκB-α degradation and phosphorylation, and subsequent decreases in NF-κB p65 levels. Moreover, the phosphorylation of mitogen-activated protein kinases (MAPKs) and Akt, a downstream molecule of phosphatidylinositol-3-kinase (PI3K), in LPS-stimulated BV2 cells was suppressed markedly by HDMPPA. This effect was associated with a significant reduction in the formation of intracellular reactive oxygen species. The findings in this study suggest that HDMPPA may exert anti-inflammatory responses by suppressing LPS-induced expression of proinflammatory mediators and cytokines through blockage of NF-κB, MAPKs, and PI3K/Akt signaling pathways and oxidative stress in microglia.
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KEYWORD
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Akt, 3-(4′-hydroxyl-3′,5′-dimethoxyphenyl)propionic acid, inflammation, MAPKs, NF-κB
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