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20(S)-Ginsenoside Rg3

CAS No. : 14197-60-5

MCE 站：20(S)-Ginsenoside Rg3

产品活性：20(S)-Ginsenoside Rg3 是红参的主要成分。20(S)-Ginsenoside Rg3 抑制 Na⁺ 和 hKv1.4 通道，IC₅₀ 分别为 32.2±4.5 和 32.6±2.2 μM。20(S)-Ginsenoside Rg3 还抑制 Aβ，NF-κB 活性和 COX-2 表达。

研究领域：Membrane Transporter/Ion Channel  |  NF-κB  |  Immunology/Inflammation  |  Neuronal Signaling  |  Metabolic Enzyme/Protease

作用靶点：Sodium Channel  |  Potassium Channel  |  NF-κB  |  COX  |  Amyloid-β  |  Endogenous Metabolite

In Vitro: Ginsenoside Rg3 plays an important role in its effect on the Na⁺ channel. Treatment with Ginsenoside Rg3 reversibly inhibits the inward Na+ peak current (INa) with an IC₅₀ of 32.2±4.5 μM, and the inhibition is voltage-dependent. Ginsenoside Rg3 at 100 μM inhibits the hKv1.4 channel currents by an average of 65%.The Ginsenoside Rg3 effect is concentration-dependent and reversible. The IC₅₀ value and Hill coefficient are 32.6±2.2 μM and 1.59±0.13, respectively. Ginsenoside Rg3 shows the significant inhibition of NF-κB activity thereby reduced COX-2 expression. To examine the cytotoxicity of Ginsenoside Rg3 on IL-1β-induced inflamed A549 cells, the cells are firstly treated with IL-1β (10?ng/mL) for 4?h and treated with 100 to 900?ng/mL concentration of Ginsenoside Rg3 for 12?h. Cell viability is analyzed using an MTT assay. There is no observed cytotoxicity of Ginsenoside Rg3 in IL-1β-induced inflamed A549 cells compared to only PBS-treated cells (Con).To obtain the anti-inflammatory effects of Ginsenoside Rg3 on inflammation induced human lung epithelial cells, A549 cells inflammation is induced by IL-1β (10?ng/mL) and then treated by 5?μM of Dexamethasone (Dex) or 900?nM of Rg3. The NF-κB activation is analyzed by a western blot analysis to evaluate the effect of Ginsenoside Rg3 treatment on A549 cells. Phospho-NF-κB p65/total NF-κB p65 densitometry in the cells treated with Rg3 shows the significant decrease compared to IL-1β-induced inflamed A549 cells. The meaning of reducing the ratio of p-p65/p65 by Rg3 treatment is associated with NF-κB activation. Ginsenoside Rg3 also downregulates the expression of COX-2 effectively.

In Vivo: Ginsenoside Rg3 ((20S)-Rg3) is an Aβ-lowering Natural Compound. APP/PS1 mice are treated with Ginsenoside Rg3 once a day for 4 weeks by intraperitoneal injection (10 mg/kg/day). Aβ ELISA analysis of brain tissues reveal that Ginsenoside Rg3 treatment results in a significant reduction of Aβ40 and Aβ42 in the brain.

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