GSK1838705A_product_DataBase

Bioactivity

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.

Target

IC50: 2.0 nM (IGF-IR), 1.6 nM (insulin receptor), 0.5 nM (ALK)

Invitro

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].

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].

Name

GSK1838705A

CAS

1116235-97-2

Formula

C27H29FN8O3

Molar Mass

532.57

Appearance

Solid

Transport

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

Reference

[1]. Sabbatini P, et al. GSK1838705A inhibits the insulin-like growth factor-1 receptor and anaplastic lymphoma kinase and shows antitumor activity in experimental models of human cancers.Mol Cancer Ther. 2009 Oct;8(10):2811-20.

PeptideDB

GSK1838705A

CAS: 1116235-97-2 F: C27H29FN8O3 W: 532.57