1. Metabolic Enzyme/Protease NF-κB Apoptosis
  2. Proteasome NF-κB Apoptosis
  3. 18α-Glycyrrhetinic acid

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.

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18α-Glycyrrhetinic acid Chemical Structure

18α-Glycyrrhetinic acid Chemical Structure

CAS No. : 1449-05-4

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Based on 1 publication(s) in Google Scholar

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  • References

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Description

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].

IC50 & Target[1][2]

Proteasome

 

NF-κB

 

In Vitro

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].

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

In Vivo

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].

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

Molecular Weight

470.68

Formula

C30H46O4

CAS No.
Appearance

Solid

Color

White to off-white

SMILES

CC1(C)[C@@H](O)CC[C@@]2(C)[C@@]1([H])CC[C@]([C@@](CC[C@]3(C)[C@]4([H])C[C@@](C)(C(O)=O)CC3)(C)C4=C5)(C)[C@]2([H])C5=O

Structure Classification
Initial Source
Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 11.36 mg/mL (24.14 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.1246 mL 10.6229 mL 21.2459 mL
5 mM 0.4249 mL 2.1246 mL 4.2492 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

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Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

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Volume (start)

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Volume (final)

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In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: 1.14 mg/mL (2.42 mM); Suspended solution; Need ultrasonic

    This protocol yields a suspended solution of 1.14 mg/mL. Suspended solution can be used for oral and intraperitoneal injection.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (11.4 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% Corn Oil

    Solubility: ≥ 1.14 mg/mL (2.42 mM); Clear solution

    This protocol yields a clear solution of ≥ 1.14 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (11.4 mg/mL) to 900 μL Corn oil, and mix evenly.

In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

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mg/kg

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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
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%
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Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation

Purity: 99.52%

References
Cell Assay
[1]

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].

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

Animal Administration
[2]

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].

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

References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.1246 mL 10.6229 mL 21.2459 mL 53.1146 mL
5 mM 0.4249 mL 2.1246 mL 4.2492 mL 10.6229 mL
10 mM 0.2125 mL 1.0623 mL 2.1246 mL 5.3115 mL
15 mM 0.1416 mL 0.7082 mL 1.4164 mL 3.5410 mL
20 mM 0.1062 mL 0.5311 mL 1.0623 mL 2.6557 mL
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18α-Glycyrrhetinic acid Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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