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Floridoside suppresses pro-inflammatory responses by blocking MAPK signaling in activated microglia
MinJeong Kim1, Yong-Xin Li, Pradeep Dewapriya
1Department of Chemistry; Marine Bioprocess Research Center, Pukyong National University, Busan 608-737, Korea.
Abstract:
Inflammatory conditions mediated by activated microglia lead to chronic neuro-degenerative diseases such as Alzheimer's, Parkinson's, and Huntington's diseases. This study was conducted to determine the effect of floridoside isolated from marine red algae Laurencia undulata on LPS (100 ng/ml) activated inflammatory responses in BV-2 microglia cells. The results show that floridoside has the ability to suppress pro-inflammatory responses in microglia by markedly inhibiting the production of nitric oxide (NO) and reactive oxygen species (ROS). Moreover, floridoside down-regulated the protein and gene expression levels of iNOS and COX-2 by significantly blocking the phosphorylation of p38 and ERK in BV-2 cells. Collectively, these results indicate that floridoside has the potential to be developed as an active agent for the treatment of neuro-inflammation.
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