1. JAK/STAT Signaling
    Stem Cell/Wnt
    Anti-infection
  2. STAT
    Parasite
  3. Niclosamide

Niclosamide (Synonyms: BAY2353)

Cat. No.: HY-B0497 Purity: >95.0%
Handling Instructions

Niclosamide (BAY2353) is an orally bioavailable chlorinated salicylanilide, with anthelmintic and potential antineoplastic activity. Niclosamide (BAY2353) inhibits STAT3 with IC50 of 0.25 μM in HeLa cells and inhibits DNA replication in a cell-free assay.

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

Niclosamide Chemical Structure

Niclosamide Chemical Structure

CAS No. : 50-65-7

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Based on 3 publication(s) in Google Scholar

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Description

Niclosamide (BAY2353) is an orally bioavailable chlorinated salicylanilide, with anthelmintic and potential antineoplastic activity. Niclosamide (BAY2353) inhibits STAT3 with IC50 of 0.25 μM in HeLa cells and inhibits DNA replication in a cell-free assay.

IC50 & Target

STAT3

0.25 μM (IC50, in HeLa cells)

In Vitro

Niclosamide is an inhibitor of STAT3, inhibiting STAT3-mediated luciferase reporter activity with an IC50 of 0.25 μM in HeLa cells. Niclosamide (1 μM) inhibits the EGF-induced nuclear translocation of STAT3 in Du145 cells. Niclosamide (< 2 μM) dose dependently inhibits the transcription of STAT3 downstream genes in Du145 cells. Niclosamide (< 10 μM) induces G0/G1 arrest and apoptosis of Du145 cancer cells in a dose dependent manner[1]. Niclosamide can block SARS-CoV replication at a micromolar concentration in Vero E6 cells infected with SARS-CoV[2]. Niclosamide (< 7.5 μM) promotes Frizzled1 endocytosis, downregulates Dishevelled-2 protein, and inhibits Wnt3A-stimulated beta-catenin stabilization and LEF/TCF reporter activity in U2OS cells[3]. Niclosamide inhibits the TNF-induced NF-κB reporter activity in a dose- and time-dependent manner in U2OS cells. Niclosamide (125 nM) inhibits NF-κB activation induced by p65, IKKα, IKKβ, IKKγ, and TAK1 in U2OS cells. Niclosamide (< 500 nM) completely block the time- and dose-dependent TNFα-induced alteration of the NF-κB-DNA complex in HL-60 cells. Niclosamide (< 10 nM) inhibits constitutive NF-κB activation in U266 cells. Niclosamide inhibits TNF-induced degradation of IκBα and relocation of p65 in a dose- and time-dependent manner in HL-60, Molm13, or AML primary cells. Niclosamide (500 nM) causes decrease in TNF-induced NF-κB-dependent gene products involved in cell survival in HL-60 cells. Niclosamide also inhibits the growth and induces robust apoptosis of AML cells associated with decreased Mcl-1 and XIAP levels and increased intracellular ROS levels[4].

In Vivo

Niclosamide (40 mg/kg/d, i.p.) suppresses the growth of xenografted AML cells in nude mice bearing HL-60 xenograft tumors[4].

Clinical Trial
Molecular Weight

327.12

Formula

C₁₃H₈Cl₂N₂O₄

CAS No.

50-65-7

SMILES

O=C(NC1=CC=C([N+]([O-])=O)C=C1Cl)C2=CC(Cl)=CC=C2O

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: 

DMF : 5 mg/mL (15.28 mM; Need ultrasonic)

DMSO : 4.55 mg/mL (13.91 mM; Need ultrasonic)

H2O : < 0.1 mg/mL (insoluble)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 3.0570 mL 15.2849 mL 30.5698 mL
5 mM 0.6114 mL 3.0570 mL 6.1140 mL
10 mM 0.3057 mL 1.5285 mL 3.0570 mL
*Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

    Add each solvent one by one:  10% DMF    40% PEG300    5% Tween-80    45% saline

    Solubility: 0.5 mg/mL (1.53 mM); Suspended solution; Need ultrasonic

*All of the co-solvents are provided by MCE.
References
Kinase Assay
[1]

All of the protein kinases are expressed either in Sf9 insect cells or in E.coli as recombinant GST-fusion proteins or His-tagged proteins. A radiometric protein kinase assay is used for measuring the kinase activity of the 22 protein kinases. Briefly, for each protein kinase, 50 μL reaction cocktail containing 60 mM HEPES-NaOH, 3 mM MgCl2, 3 mM MnCl2, 3 μM Na-orthovanadate, 1.2 mM DTT, 50 μg/mL PEG20000, 1 μM [γ-33P]-ATP, Niclosamide, adequate amount of enzyme and its substrate. The PKC-alpha assay additionally contain 1 mM Ca2, 4 mM EDTA, 5 μg/mL phosphatidylserine and 1 μg/mL 1, 2-Dioleyl-glycerol. The reaction cocktails are incubated at 37°C for 60 minutes and stop with 50 μL 2% (v/v) H3PO4. Incorporation of 33Pi is determined with a microplate scintillation counter. The activities and the IC50 values are calculated using Quattro Workflow V2.28.

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

Cell Assay
[1]

Cells are plated in 96-well culture plates with cell density of 3-4 ×103 cells/well and treat with Niclosamide by adding 100 μL medium containing Niclosamide of various concentrations on the second day. After 72-hour's treatment, MTT is added to each well and incubated for additional 4-5 hours, and the absorbance is measured on a microplate reader at 570 nm. Cell growth inhibition is evaluated as the ratio of the absorbance of the sample to that of the control. The results are representative of at least 3 independent experiments.

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

Animal Administration
[4]

Male nu/nu BALB/c mice are used in the assay. HL-60 cells are inoculated s.c. on the flanks of 4- to 6-wk-old mice. Tumors are measured every other day with use of calipers. Mice bearing HL-60 xenografts are randomized to receive treatment with normal saline (control) or p-niclosamide for 15 days (n=7 animals each). Tumor volumes are calculated by the following formula: a2×b×0.4, where a is the smallest diameter and b is the diameter perpendicular to a. After mice are euthanized, xenografts are dissected, weighed, or preserved.

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

References

Purity: >95.0%

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Keywords:

NiclosamideBAY2353BAY 2353BAY-2353STATParasiteInhibitorinhibitorinhibit

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Niclosamide
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HY-B0497
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