2. Protein Tyrosine Kinase/RTK
  3. Anaplastic lymphoma kinase (ALK) IGF-1R Insulin Receptor
  4. GSK1838705A

GSK1838705A is a potent and reversible IGF-IR and the insulin receptor inhibitor with IC50s of 2.0 and 1.6 nM, respectively. It also inhibits ALK with an IC50 of 0.5 nM.

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

GSK1838705A Chemical Structure

GSK1838705A Chemical Structure

CAS No. : 1116235-97-2

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Customer Review

Based on 7 publication(s) in Google Scholar

GSK1838705A Related Antibodies

Top Publications Citing Use of Products

  • Biological Activity

  • Protocol

  • Purity & Documentation

  • References

  • Customer Review

Description

GSK1838705A is a potent and reversible IGF-IR and the insulin receptor inhibitor with IC50s of 2.0 and 1.6 nM, respectively. It also inhibits ALK with an IC50 of 0.5 nM.

IC50 & Target

IC50: 2.0 nM (IGF-IR), 1.6 nM (insulin receptor), 0.5 nM (ALK)[1]
In Vitro

In cellular phosphorylation assays, GSK1838705A potently inhibits IGF-IR and insulin receptor phosphorylation with IC50s of 85 and 79 nM, respectively. appKi values are 0.7 nM for IGF-IR and 1.1 nM for insulin receptor using the filter binding assay. GSK1838705A inhibits the proliferation in a panel of cell lines derived from solid and hematologic tumors. The EC50s of GSK1838705A range from 20 nM to >8 μM, but are <1 μM in most multiple myeloma and Ewing's sarcoma cell lines[1].

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

GSK1838705A Related Antibodies
In Vivo

GSK1838705A shows robust antitumor activity in animal xenograft models. Tumor types likely to respond to GSK1838705A include multiple myeloma and Ewing's sarcoma, as well as ALK-driven tumors (e.g., ALCL, NSCLC, and neuroblastoma). A single oral dose of GSK1838705A at 0.1 and 0.3 mg/kg results in 35% and 65% inhibition of IGF-IR phosphorylation, respectively, whereas doses ≥1 mg/kg results in complete inhibition of ligand-induced IGF-IR phosphorylation[1].

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

532.57

Formula

C27H29FN8O3
CAS No.
Appearance

Solid

Color

Light yellow to yellow

SMILES

FC1=C(C(NC)=O)C(NC2=C3C(NC=C3)=NC(NC4=CC5=C(CCN5C(CN(C)C)=O)C=C4OC)=N2)=CC=C1
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : ≥ 100 mg/mL (187.77 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 1.8777 mL 9.3884 mL 18.7769 mL
5 mM 0.3755 mL 1.8777 mL 3.7554 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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

  • Molarity Calculator

  • Dilution Calculator

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

Mass
=
Concentration
×
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

×
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    40% PEG300    5% Tween-80    45% Saline

    Solubility: 3 mg/mL (5.63 mM); Suspended solution; Need ultrasonic

    This protocol yields a suspended solution of 3 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 (30.0 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.
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).
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: 99.14%

SDS (252 KB)

COA (260 KB) HNMR (438 KB) LCMS (98 KB)

Handling Instructions (2659 KB)
References
Kinase Assay
[1]

Baculovirus-expressed glutathione S-transferase–tagged proteins encoding the intracellular domain of IGF-IR (amino acids 957–1367) and IR (amino acids 979–1382) are used for determinations of IC50s by a homogeneous time-resolved fluorescence assay. A filter binding assay is used for appKi determinations using activated IGF-IR and IR kinases. Expanded kinase-selectivity profiling of GSK1838705A is carried out by screening the compound in the KinaseProfiler panel[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
Cell Assay
[1]

Cells are seeded in 96-well dishes, incubated overnight at 37°C, and treated with DMSO or GSK1838705A for 72 h. For the NIH-3T3/LISN proliferation assays, cells are seeded on collagen-coated 96-well tissue culture plates and allowed to adhere for 24 h. The medium is replaced with serum-free medium and the cells are treated with GSK1838705A for 2 h. Cells are incubated for 72 h after addition of IGF-I (30 ng/mL). Cell proliferation is quantified using the CellTiter-Glo Luminescent Cell Viability Assay. IC50s are determined from cytotoxicity curves using a four-parameter curve fit software package[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
Animal Administration
[1]

Mice: Exponentially growing cells are implanted s.c. into the right flank of 8- to 12-wk-old female nu/nu CD-1 or SCID mice. Mice are dosed p.o. with the formulating vehicle or GSK1838705A. Mice are weighed and tumors measured by calipers twice weekly. Tumor volumes are calculated[1]

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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 1.8777 mL 9.3884 mL 18.7769 mL 46.9422 mL
5 mM 0.3755 mL 1.8777 mL 3.7554 mL 9.3884 mL
10 mM 0.1878 mL 0.9388 mL 1.8777 mL 4.6942 mL
15 mM 0.1252 mL 0.6259 mL 1.2518 mL 3.1295 mL
20 mM 0.0939 mL 0.4694 mL 0.9388 mL 2.3471 mL
25 mM 0.0751 mL 0.3755 mL 0.7511 mL 1.8777 mL
30 mM 0.0626 mL 0.3129 mL 0.6259 mL 1.5647 mL
40 mM 0.0469 mL 0.2347 mL 0.4694 mL 1.1736 mL
50 mM 0.0376 mL 0.1878 mL 0.3755 mL 0.9388 mL
60 mM 0.0313 mL 0.1565 mL 0.3129 mL 0.7824 mL
80 mM 0.0235 mL 0.1174 mL 0.2347 mL 0.5868 mL
100 mM 0.0188 mL 0.0939 mL 0.1878 mL 0.4694 mL
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GSK1838705A 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.

Keywords:

GSK1838705A1116235-97-2Anaplastic lymphoma kinase (ALK)IGF-1RInsulin ReceptorAnaplastic lymphoma kinaseALK tyrosine kinase receptorCD246Cluster of differentiation 246Insulin-like growth factor-1 receptorInhibitorinhibitorinhibit

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