Ginsenoside Rg5 is the main component of Red ginseng. Ginsenoside blocks binding of IGF-1 to its receptor with an IC₅₀ of ~90 nM. Ginsenoside Rg5 also inhibits the mRNA expression of COX-2 via suppression of the DNA binding activities of NF-κB p65.

Ginsenoside Rg5 plays a novel role as an IGF-1R agonist. Ginsenoside Rg5 binds to IGF-1R with an IC₅₀ value of ~90 and its angiogenic activity is inhibited by IGF-1R knockdown. To investigate the possible interaction of Ginsenoside Rg5 with IGF-1R, a docking analysis is performed. Docking results show that Ginsenoside Rg5 binds strongly at two sites, A and B, with K_d values of 20 and 27 nM, respectively, to the cysteine-rich domain of IGF-1R. Pretreatment with Rg5 blocks the binding of radiolabeled IGF-1 to HUVECs with an IC₅₀ value of ~90 μM, which is greater than an IC₅₀ value of ~1.4 nM for unlabeled IGF-1^[1]. The results from MTT assay show that MCF-7 cell proliferation is inhibited by Ginsenoside Rg5 treatment for 24, 48 and 72 h in a dose-dependent manner. Ginsenoside Rg5 at different concentrations (0, 25, 50 and 100 μM), induce cell cycle arrest in G0/G1 phase through regulation of cell cycle-related proteins in MCF-7 cells^[3].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Ginsenoside Rg5 inhibits the mRNA expression of COX-2 via suppression of the DNA binding activities of NF-κB p65 in lipopolysaccharides (LPS)-stimulated BV2 microglial cells. Rg5 pretreated group mice show declined expression of NF-κB p65 and COX-2. In the group treated with low dose of Ginsenoside Rg5 (10 mg/kg), there is remarkable tubular damage and infiltration of inflammatory cells. However, at the higher dose of Ginsenoside Rg5 (20 mg/kg), tubules markedly appeare histologically normal and no inflammation and cast formation is observed in kidney tissues^[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

767.00

C₄₂H₇₀O₁₂

186763-78-0

人参皂甙 Rg5

Room temperature in continental US; may vary elsewhere.

Powder	-20deg;C	3 years
In solvent	-80deg;C	6 months
	-20deg;C	1 month

In Vitro:;

DMSO : 100 mg/mL (130.38 mM; Need ultrasonic)

*

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

In Vivo:

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液，再依次添加助溶剂：

——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用； 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶

• 1.

  请依序添加每种溶剂：;10% DMSO ;; 40% PEG300 ;; 5% Tween-80 ;; 45% saline

  Solubility: ≥ 2.5 mg/mL (3.26 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (3.26 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。

  将 0.9 g 氯化钠，完全溶解于 100 mL ddH₂O 中，得到澄清透明的生理盐水溶液

• 2.

  请依序添加每种溶剂：;10% DMSO ;; 90% (20% SBE-β-CD in saline)

  Solubility: ≥ 2.5 mg/mL (3.26 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (3.26 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。

  将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中，再用生理盐水定容至 10 mL，完全溶解，澄清透明
• 3.

  请依序添加每种溶剂：;10% DMSO ;; 90% corn oil

  Solubility: ≥ 2.5 mg/mL (3.26 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (3.26 mM，饱和度未知) 的澄清溶液，此方案不适用于实验周期在半个月以上的实验。

  以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

• [1]. Cho YL, et al. Specific activation of insulin-like growth factor-1 receptor by ginsenoside Rg5 promotes angiogenesis and vasorelaxation. J Biol Chem. 2015 Jan 2;290(1):467-77.

  [2]. Li W, et al. Ginsenoside Rg5 Ameliorates Cisplatin-Induced Nephrotoxicity in Mice through Inhibition of Inflammation, Oxidative Stress, and Apoptosis. Nutrients. 2016 Sep 13;8(9). pii: E566.

  [3]. Kim SJ, et al. Anti-breast cancer activity of Fine Black ginseng (Panax ginseng Meyer) and ginsenoside Rg5. J Ginseng Res. 2015 Apr;39(2):125-34.

HUVECs are cultured in 24-well plates overnight. The cells are changed to serum-free M199 and incubated for 1 h. The medium is removed, and cells are incubated with fresh serum-free medium containing 0.1 μM-50 mM Ginsenoside Rg5 at 37°C for 20 min followed by the addition of 50 μL (1 μCi) of [¹²⁵I]IGF-1 and then further incubated for 10 min. The medium is decanted, and cell plates are washed twice with serum-free medium. Cells are lysed in 300 μL of 0.1 N NaOH solution containing 0.1% SDS, transferred to scintillation vials, and mixed with 1 mL of Ultima Gold mixture solution. Cell-associated [¹²⁵I]IGF-1 is analyzed in a scintillation counter. The nonspecific binding is determined by coincubation with unlabeled IGF-1 (50 nM)^[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

MCF-7 (HER2^–/ER⁺) and MDA-MB-453 (HER2⁺/ER^–) human breast cancer cell lines are maintained using RPMI 1640 medium supplemented with 10% (vol/vol) FBS plus 100 units/mL Penicillin and Streptomycin in a 5% carbon dioxide air incubator at 37°C. Cell cytotoxicity is measured by MTT assay. Cells are seeded in 96-well tissue culture plates at the density of 0.2×10⁴ cells per well with 100 μL medium, and are allowed to become attached for 24 h. One hundred microliters of the medium with different concentrations of Ginsenoside Rg5 (e.g., 0 μM, 25 μM, 50 μM, and 100 μM) are added to each well. At indicated times, 30 μL MTT stock solution (3 mg/mL) are added to each well. After culturing the cells at 37°C for 2 h, DMSO is added to dissolve the formazan crystals. The absorbance is read at the wavelength of 540 nm with a microplate reader^[3].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Mice^[2]
Male ICR mice (6 to 8 weeks old), weighing 25-27 g, are used. After acclimation for one week, mice are randomly assigned into 4 experimental groups with 8 mice in each group: normal control, Cisplatin control, and Cisplatin+Ginsenoside Rg5 groups (10 and 20 mg/kg, respectively). Ginsenoside Rg5 is administered intragastrically at the dose of 10 and 20 mg/kg for 10 days. On the 7th day, animals in Cisplatin control and Ginsenoside Rg5-treated groups receive a single intraperitoneal injection of Cisplatin (25 mg/kg) to induce nephrotoxicity in mice. Mice are anaesthetized with pentobarbital, subsequently sacrificed at 72 h after Cisplatin injection (Day 10). Blood samples are collected and then centrifuged at 3000 rpm to separate the serum and stored at -20 °C for determining blood urea nitrogen (BUN) and creatinine (CRE) levels.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

• [1]. Cho YL, et al. Specific activation of insulin-like growth factor-1 receptor by ginsenoside Rg5 promotes angiogenesis and vasorelaxation. J Biol Chem. 2015 Jan 2;290(1):467-77.

  [2]. Li W, et al. Ginsenoside Rg5 Ameliorates Cisplatin-Induced Nephrotoxicity in Mice through Inhibition of Inflammation, Oxidative Stress, and Apoptosis. Nutrients. 2016 Sep 13;8(9). pii: E566.

  [3]. Kim SJ, et al. Anti-breast cancer activity of Fine Black ginseng (Panax ginseng Meyer) and ginsenoside Rg5. J Ginseng Res. 2015 Apr;39(2):125-34.