PQ 401

Alias: PQ-401; PQ 401; PQ401
Cat No.:V0627 Purity: ≥98%
PQ401 (PQ-401) is a novel, potent and selective inhibitor of IGF-1R (insulin-like growth factor-1 receptor) with potential antineoplastic activity.
PQ 401 Chemical Structure CAS No.: 196868-63-0
Product category: IFG-1R
This product is for research use only, not for human use. We do not sell to patients.
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description

PQ401 (PQ-401) is a novel, potent and selective inhibitor of IGF-1R (insulin-like growth factor-1 receptor) with potential antineoplastic activity. At an IC50 of less than 1 μM, it inhibits IGF-1R. PQ-401 suppresses glioma cell growth, proliferation, and migration while inducing apoptosis. PQ 401 dramatically and dose-dependently inhibited the growth of MCNeuA tumors at two different dosages (50 mg/kg and 100 mg/kg).

Biological Activity I Assay Protocols (From Reference)
Targets
IGF-IR; apoptosis
ln Vitro

PQ401 (1, 5, 10, 25, and 50 μM; 3 days) inhibits the growth of MCF-7 cells that have been cultured in serum or with IGF-I in MCF-7 cells[1].
Treatment with 15 μM PQ401 for 24 hours causes caspase-mediated apoptosis[1].
PQ401, with an IC50 <1 μM, inhibits the IGF-IR kinase domain's autophosphorylation at concentrations <100 nM.

ln Vivo
PQ401 (i.p.; 50 or 100 mg/kg; three times per week) significantly reduces tumor growth in a dose-dependent manner during the course of the study. Mice implanted with MCNeuA cells grow less quickly when PQ401 is used[1].
Enzyme Assay
For twenty minutes, a single microgram of constitutively active IGF-IR kinase domain peptide is incubated +/− with different concentrations of PQ 401 in 2% DMSO in 40 mM Tris (pH 7.4), 80μMEGTA, 0.25% 2-mercaptoethanol, 80μM Na3VO4, 10 mM MgCl2, and 2 mM MnCl2. At a final concentration of 20μM, ATP is then added. The kinase domain peptide is permitted to autophosphorylate for 20 minutes at 22°C. Samples are run on SDS-PAGE after SDS-reducing buffer is added to stop the reaction. Peptide autophosphorylation is assessed by Western blotting using an antibody against phosphotyrosine (PY20) after transfer to nitrocellulose membrane.
Cell Assay
Using a CyQuant cell proliferation assay kit, the inhibitory effects of diaryl urea on the growth of breast cancer cells are ascertained. In 96-well plates (5 × 103 per well), MCF-7 or MCNeuA cells are plated in phenol red-free DMEM that has been supplemented with 10% FCS. There is a single plate ready for every harvest day. Following an overnight period of adhesion, cells are treated with varying concentrations of diaryl urea or, as a vehicle control, DMSO. On days 0, 1, 2, and 3, microplate cultures are harvested by gently blotting the microplate onto paper towels while inverting it to remove the growth medium without disturbing the adherent cells. Every plate is maintained at -80 °C until the third day of the experiment, when they are all thawed and analyzed collectively. Following thawing, 200 μL of CyQuant GR solution is added to each well, and the plates are then incubated for two to five minutes in the dark. Utilizing a SpectraMax Gemini XS fluorescence microplate reader with 480 nm excitation and 520 nm emission, fluorescence is measured. The nucleotide content percentage in comparison to control cells on day 0 is used to calculate the proliferation index.
Animal Protocol
Female mice were MCNeuA tumor cells
50 or 100 mg/kg
Administered i.p. thrice a week; 24 days
References

[1]. Diarylureas are small-molecule inhibitors of insulin-like growth factor I receptor signaling and breast cancer cell growth. Mol Cancer Ther. 2006 Apr;5(4):1079-86.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C18H16CLN3O2
Molecular Weight
341.79
Exact Mass
341.09
Elemental Analysis
C, 63.25; H, 4.72; Cl, 10.37; N, 12.29; O, 9.36
CAS #
196868-63-0
Related CAS #
196868-63-0
Appearance
White to off-white solid powder
SMILES
CC1=NC2=CC=CC=C2C(=C1)NC(=O)NC3=C(C=CC(=C3)Cl)OC
InChi Key
YBLWOZUPHDKFOT-UHFFFAOYSA-N
InChi Code
InChI=1S/C18H16ClN3O2/c1-11-9-15(13-5-3-4-6-14(13)20-11)21-18(23)22-16-10-12(19)7-8-17(16)24-2/h3-10H,1-2H3,(H2,20,21,22,23)
Chemical Name
1-(5-chloro-2-methoxyphenyl)-3-(2-methylquinolin-4-yl)urea
Synonyms
PQ-401; PQ 401; PQ401
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO: ~32 mg/mL (~93.6 mM)
Water: <1 mg/mL
Ethanol: <1 mg/mL
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 1.43 mg/mL (4.18 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 14.3 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: 1.43 mg/mL (4.18 mM) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), suspension solution; with ultrasonication.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 14.3 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.

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Solubility in Formulation 3: ≥ 1.43 mg/mL (4.18 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 14.3 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly..


Solubility in Formulation 4: 30% PEG400+0.5% Tween80+5% propylene glycol: 5 mg/mL

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 2.9258 mL 14.6289 mL 29.2577 mL
5 mM 0.5852 mL 2.9258 mL 5.8515 mL
10 mM 0.2926 mL 1.4629 mL 2.9258 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

Biological Data
  • PQ 401

    PQ401 inhibits the IGF-I-mediated antiapoptotic pathway in MCF-7 cells. Mol Cancer Ther. 2006 Apr;5(4):1079-86.

  • PQ 401

    PQ401 increases caspase-mediated apoptotic activity in MCF-7 cells. Mol Cancer Ther. 2006 Apr;5(4):1079-86.

  • PQ 401

    Growth inhibition of MCNeuA cells in vivo by PQ401. Mol Cancer Ther. 2006 Apr;5(4):1079-86.

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