1. PI3K/Akt/mTOR Anti-infection Autophagy
  2. mTOR Bacterial Autophagy
  3. (+)-Usnic acid

(+)-Usnic acid is isolated from isolated from lichens, binds at the ATP-binding pocket of mTOR, and inhibits mTORC1/2 activity. (+)-Usnic acid inhibits the phosphorylation of mTOR downstream effectors: Akt (Ser473), 4EBP1, S6K, induces autophay, with anti-cancer activity. (+)-Usnic acid possesses antimicrobial activity against a number of planktonic gram-positive bacteria, including Staphylococcus aureus, Enterococcus faecalis, and Enterococcus faecium.

For research use only. We do not sell to patients.

(+)-Usnic acid Chemical Structure

(+)-Usnic acid Chemical Structure

CAS No. : 7562-61-0

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Based on 2 publication(s) in Google Scholar

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Description

(+)-Usnic acid is isolated from isolated from lichens, binds at the ATP-binding pocket of mTOR, and inhibits mTORC1/2 activity. (+)-Usnic acid inhibits the phosphorylation of mTOR downstream effectors: Akt (Ser473), 4EBP1, S6K, induces autophay, with anti-cancer activity[1]. (+)-Usnic acid possesses antimicrobial activity against a number of planktonic gram-positive bacteria, including Staphylococcus aureus, Enterococcus faecalis, and Enterococcus faecium[2].

IC50 & Target[1]

mTORC1

 

mTORC2

 

Cellular Effect
Cell Line Type Value Description References
3LL cell line IC50
35.1 μM
Compound: (-)-UA, usnic acid
Cytotoxicity against mouse 3LL CRL 1642 cells after 48 hrs by MTT assay
Cytotoxicity against mouse 3LL CRL 1642 cells after 48 hrs by MTT assay
[PMID: 18558490]
BT-474 IC50
15.1 μM
Compound: 1
Antiproliferative activity against human BT-474 cells incubated for 72 hrs by MTT assay
Antiproliferative activity against human BT-474 cells incubated for 72 hrs by MTT assay
[PMID: 28245124]
DU-145 IC50
45.9 μM
Compound: (-)-UA, usnic acid
Cytotoxicity against human DU145 ATCC HTB 81 cells after 72 hrs by MTT assay
Cytotoxicity against human DU145 ATCC HTB 81 cells after 72 hrs by MTT assay
[PMID: 18558490]
K562 IC50
21.8 μM
Compound: (-)-UA, usnic acid
Cytotoxicity against human K562 ATCC CCL 243 cells after 72 hrs by MTT assay
Cytotoxicity against human K562 ATCC CCL 243 cells after 72 hrs by MTT assay
[PMID: 18558490]
L1210 IC50
17.4 μM
Compound: (-)-UA, usnic acid
Cytotoxicity against mouse L1210 ATCC CCL 219 cells after 48 hrs by MTT assay
Cytotoxicity against mouse L1210 ATCC CCL 219 cells after 48 hrs by MTT assay
[PMID: 18558490]
MCF7 IC50
11.2 μM
Compound: 1
Antiproliferative activity against human MCF7 cells incubated for 72 hrs by MTT assay
Antiproliferative activity against human MCF7 cells incubated for 72 hrs by MTT assay
[PMID: 28245124]
MCF7 IC50
51.7 μM
Compound: (-)-UA, usnic acid
Cytotoxicity against human MCF7 ATCC HTB 22 cells after 72 hrs by MTT assay
Cytotoxicity against human MCF7 ATCC HTB 22 cells after 72 hrs by MTT assay
[PMID: 18558490]
MDA-MB-231 IC50
13.1 μM
Compound: 1
Antiproliferative activity against human MDA-MB-231 cells incubated for 72 hrs by MTT assay
Antiproliferative activity against human MDA-MB-231 cells incubated for 72 hrs by MTT assay
[PMID: 28245124]
MDA-MB-231 IC50
13.7 μM
Compound: 1
Antimigratory activity in human MDA-MB-231 cells assessed as inhibition of cell migration after 23 hrs by by scratch wound healing assay
Antimigratory activity in human MDA-MB-231 cells assessed as inhibition of cell migration after 23 hrs by by scratch wound healing assay
[PMID: 28245124]
MDA-MB-231 IC50
14.2 μM
Compound: 1
Anti-invasive activity in human MDA-MB-231 cells after 24 hrs by microscopic analysis
Anti-invasive activity in human MDA-MB-231 cells after 24 hrs by microscopic analysis
[PMID: 28245124]
MDA-MB-468 IC50
13.7 μM
Compound: 1
Antiproliferative activity against human MDA-MB-468 cells incubated for 72 hrs by MTT assay
Antiproliferative activity against human MDA-MB-468 cells incubated for 72 hrs by MTT assay
[PMID: 28245124]
MDCK ED50
13.1 μM
Compound: (-)-1
Antiviral activity against rimantidine, amantidine-resistant Influenza A virus (A/California/07/09(H1N1)) pdm09 infected in MDCK cells assessed as inhibition of viral replication after 1 hrs by hemagglutination assay
Antiviral activity against rimantidine, amantidine-resistant Influenza A virus (A/California/07/09(H1N1)) pdm09 infected in MDCK cells assessed as inhibition of viral replication after 1 hrs by hemagglutination assay
[PMID: 25464881]
MDCK ED50
14.5 μM
Compound: (-)-1
Antiviral activity against Influenza virus A/California/07/09 (H1N1) pdm09 infected in MDCK cells after 48 hrs followed by incubated in chicken erythrocytes for 1 hr by hemagglutinination based end-point dilution method
Antiviral activity against Influenza virus A/California/07/09 (H1N1) pdm09 infected in MDCK cells after 48 hrs followed by incubated in chicken erythrocytes for 1 hr by hemagglutinination based end-point dilution method
[PMID: 23099095]
SK-BR-3 IC50
14.4 μM
Compound: 1
Antiproliferative activity against human SK-BR-3 cells incubated for 72 hrs by MTT assay
Antiproliferative activity against human SK-BR-3 cells incubated for 72 hrs by MTT assay
[PMID: 28245124]
T47D IC50
15.9 μM
Compound: 1
Antiproliferative activity against human T47D cells incubated for 72 hrs by MTT assay
Antiproliferative activity against human T47D cells incubated for 72 hrs by MTT assay
[PMID: 28245124]
U-251 IC50
19.7 μM
Compound: (-)-UA, usnic acid
Cytotoxicity against human U251 RCB 0641 cells after 72 hrs by MTT assay
Cytotoxicity against human U251 RCB 0641 cells after 72 hrs by MTT assay
[PMID: 18558490]
Molecular Weight

344.32

Formula

C18H16O7

CAS No.
Appearance

Solid

Color

Light yellow to yellow

SMILES

O=C([C@@]1(C)C(OC2=C(C(C)=O)C(O)=C(C)C(O)=C12)=C3)C(C(C)=O)C3=O

Structure Classification
Initial Source
Shipping

Room temperature in continental US; may vary elsewhere.

Storage

4°C, protect from light

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

Solvent & Solubility
In Vitro: 

DMSO : ≥ 1.92 mg/mL (5.58 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H2O : < 0.1 mg/mL (insoluble)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.9043 mL 14.5214 mL 29.0428 mL
5 mM 0.5809 mL 2.9043 mL 5.8085 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 (protect from light). 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)

Mass
=
Concentration
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Volume
×
Molecular Weight *

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

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

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Volume (final)

V2

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    90% Corn Oil

    Solubility: ≥ 0.63 mg/mL (1.83 mM); Clear solution

    This protocol yields a clear solution of ≥ 0.63 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 (6.3 mg/mL) to 900 μL Corn oil, and mix evenly.

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

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
+
%
Tween-80 +
%
Saline
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).

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

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
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 (protect from light). 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 2.9043 mL 14.5214 mL 29.0428 mL 72.6069 mL
5 mM 0.5809 mL 2.9043 mL 5.8086 mL 14.5214 mL
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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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Product Name:
(+)-Usnic acid
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