Wogonoside displays anti-inflammatory effects through modulating inflammatory mediator expression using RAW264.7...

Area of Science:

• Pharmacology
• Immunology
• Natural Products Chemistry

Background:

• Scutellaria baicalensis Georgi (Huangqin) root is a traditional Chinese nutraceutical.
• Wogonoside, a flavonoid glycoside abundant in Huangqin, was investigated for its biological activities.
• Inflammation is a key target for therapeutic intervention, with lipopolysaccharides (LPS) serving as a common inducer in cellular models.

Purpose of the Study:

• To investigate the anti-inflammatory effects of wogonoside.
• To evaluate the impact of wogonoside on inflammatory mediators and cytokines in LPS-induced RAW264.7 cells.
• To determine the influence of wogonoside on the gene expression of key inflammatory markers.

Main Methods:

• Utilized RAW264.7 macrophage cell line.
• Measured nitric oxide (NO), prostaglandin E2 (PGE2), tumor necrosis factor-α (TNF-α), and interleukin-6 (IL-6) production.
• Assessed mRNA expression levels of inducible nitric oxide synthase (iNOS), cyclooxygenase 2 (COX2), TNF-α, and IL-6.

Main Results:

• Wogonoside demonstrated dose-dependent inhibition of NO and PGE2 production.
• Wogonoside significantly reduced the release of pro-inflammatory cytokines TNF-α and IL-6.
• In vitro studies showed that wogonoside suppressed the gene expression of iNOS, COX2, TNF-α, and IL-6.

Conclusions:

• Wogonoside exhibits significant anti-inflammatory properties by reducing inflammatory mediators and cytokines.
• Wogonoside effectively inhibits the gene expression of key inflammatory enzymes and signaling molecules.
• These findings support the potential use of wogonoside as a functional food ingredient for preventing and treating inflammatory conditions.