18α-Glycyrrhetinic acid, a diet-derived compound, is an inhibitor of NF-kB and an activator of proteasome, which serves as pro-longevity and anti-aggregation factor in a multicellular organism. 18α-Glycyrrhetinic acid induces apoptosis^[1][2].

18α-Glycyrrhetinic acid (18a-GA) markedly reduces LX-2 cell numbers by 14.8% and 31.2% after 48 h and 72 h of treatment, respectively (P< 0.05). 18α-Glycyrrhetinic acid also significantly increases the percentage of LX-2 cells in phase G0/G1 and decreases it in phase S after treated for 48 h and 72 h compare with the control group. 18α-Glycyrrhetinic acid increases apoptosis to 6.8% at 48 h, compare with control (2.5%), and at 72 h the percentages of apoptotic cells in control and the treatment groups are 3.1% and 15.6%, respectively, in LX-2 cells (P<0.01). Furthermore, 18α-Glycyrrhetinic acid induces expression of PPAR-γ and alters some cell cycle and apoptosis-related proteins. 18α-Glycyrrhetinic acid also inhibits NF-κB DNA-binding activity^[1].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

18α-Glycyrrhetinic acid (18α-GA) treatment significantly enhances life span of C. elegans strains with the most effective concentration being 20 μg/mL. Results reveal a significant delay of paralysis upon 18α-Glycyrrhetinic acid treatment. 18α-Glycyrrhetinic acid treatment also confers a significant reduction of Aβ deposits^[2].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

470.68

C₃₀H₄₆O₄

1449-05-4

18-α-甘草次酸

Room temperature in continental US; may vary elsewhere.

Powder	-20°C	3 years
	4°C	2 years
In solvent	-80°C	6 months
	-20°C	1 month

In Vitro: 

DMSO : 19.23 mg/mL (40.86 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: 1.92 mg/mL (4.08 mM); Suspended solution; Need ultrasonic

  此方案可获得 1.92 mg/mL (4.08 mM) 的均匀悬浊液，悬浊液可用于口服和腹腔注射。

  以 1 mL 工作液为例，取 100 μL 19.2 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% corn oil

  Solubility: ≥ 1.92 mg/mL (4.08 mM); Clear solution

  此方案可获得 ≥ 1.92 mg/mL (4.08 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 19.2 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

• [1]. Zong L et al. 18α-glycyrrhetinic acid extracted from Glycyrrhiza radix inhibits proliferation and promotes apoptosis of the hepatic stellate cell line. J Dig Dis. 2013 Jun;14(6):328-36.

  [2]. Papaevgeniou N, et al. 18α-Glycyrrhetinic Acid Proteasome Activator Decelerates Aging and Alzheimer’s Disease Progression in Caenorhabditis elegans and Neuronal Cultures. Antioxid Redox Signal. 2016 Dec 1;25(16):855-869.

For the determination of cell cycle, 5×10⁵ cells per well are seeded onto 6-well plates and incubated overnight in complete growth medium (DMEM+10% FBS). After starvation for 24 h, the cells are subsequently stimulated with 10% FBS with or without the presence of 18α-Glycyrrhetinic acid (18a-GA). The final concentration of 18α-Glycyrrhetinic acid is 8.0 mM. The cells are incubated for 24 h, 48 h and 72 h, respectively, and then the flow cytometric analysis is performed. Flow cytometric analysis is performed in triplicate. After being treated with 18α-Glycyrrhetinic acid, the cells are stained and then cell apoptosis status is measured by flow cytometry^[1].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

C. elegans strains are used in this study. Synchronized L4 larvae CL2006 animals (100 to 120 animals per condition) are transferred to nematode growth medium (NGM) plates containing either 18α-Glycyrrhetinic acid (18α-GA) or DMSO at 20°C. Synchronized CL4176 animals (150 to 300 animals per condition) are transferred to NGM plates containing either 18α-Glycyrrhetinic acid or DMSO at 16°C for 48 h before temperature upshift to 25°C for transgene induction. Scoring of paralyzed animals is initiated at day 1 of adulthood for CL2006 strain and 24 h after temperature upshift for CL4176 strain. Each paralysis assay is repeated at least thrice. Nematodes are scored as paralyzed if they exhibit halos of cleared bacteria around their heads or fail to undergo half end body wave propagation upon prodding^[2].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

• [1]. Zong L et al. 18α-glycyrrhetinic acid extracted from Glycyrrhiza radix inhibits proliferation and promotes apoptosis of the hepatic stellate cell line. J Dig Dis. 2013 Jun;14(6):328-36.

  [2]. Papaevgeniou N, et al. 18α-Glycyrrhetinic Acid Proteasome Activator Decelerates Aging and Alzheimer’s Disease Progression in Caenorhabditis elegans and Neuronal Cultures. Antioxid Redox Signal. 2016 Dec 1;25(16):855-869.