Rhizoma Coptidis inhibits LPS-induced MCP-1/CCL2 production in murine macrophages via an AP-1 and NFkappaB-dependent pathway.

Mediators of Inflammation
Andrew RemppisErwin Blessing

Abstract

The Chinese extract Rhizoma coptidis is well known for its anti-inflammatory, antioxidative, antiviral, and antimicrobial activity. The exact mechanisms of action are not fully understood. We examined the effect of the extract and its main compound, berberine, on LPS-induced inflammatory activity in a murine macrophage cell line. RAW 264.7 cells were stimulated with LPS and incubated with either Rhizoma coptidis extract or berberine. Activation of AP-1 and NFkappaB was analyzed in nuclear extracts, secretion of MCP-1/CCL2 was measured in supernatants. Incubation with Rhizoma coptidis and berberine strongly inhibited LPS-induced monocyte chemoattractant protein (MCP)-1 production in RAW cells. Activation of the transcription factors AP-1 and NFkappaB was inhibited by Rhizoma coptidis in a dose- and time-dependent fashion. Rhizoma coptidis extract inhibits LPS-induced MCP-1/CCL2 production in vitro via an AP-1 and NFkappaB-dependent pathway. Anti-inflammatory action of the extract is mediated mainly by its alkaloid compound berberine.

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Citations

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Methods Mentioned

BETA
FCS
electrophoretic mobility shift
ELISAs
ELISA

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