Home TGF-beta/Smad TGF-beta/Smad inhibitor SD-208 For research use only.

SD-208

SD-208 is a selective TGF-βRI (ALK5) inhibitor with IC50 of 48 nM, >100-fold selectivity over TGF-βRII.

SD-208 Chemical Structure

SD-208 Chemical Structure

CAS No. 627536-09-8

Purity & Quality Control

SD-208 Related Products

Signaling Pathway

TGF-beta/Smad Signaling Pathways

TGF-beta/Smad Signaling Pathway

Biological Activity

Description SD-208 is a selective TGF-βRI (ALK5) inhibitor with IC50 of 48 nM, >100-fold selectivity over TGF-βRII.
Targets
TGF-βRI (ALK5) [1]
(Cell-free assay)
48 nM
In vitro
In vitro SD-208 inhibits the cell growth and constitutive and TGF-beta-evoked migration and invasion, and enhances immunogenicity in murine SMA-560 and human LN-308 glioma cells. [1] SD-208 blocka TGF-beta-induced phosphorylation of the receptor-associated Smads, Smad2 and Smad3, and stimulates epithelial-to-mesenchymal transdifferentiation, migration, and invasiveness into Matrigel in vitro. [2] SD-208 also abolishes the promoting effect of TGF-β on neointimal smooth muscle-like cell (SMLC) proliferation and migration in vitro. [3]
Kinase Assay Kinase assay
Various kinase activities are assayed by measuring the incorporation of radiolabeled ATP into a peptide or protein substrate. The reactions are performed in 96-well plates and included the relevant kinase, substrate, ATP, and appropriate cofactors. The reactions are incubated and then stopped by the addition of phosphoric acid. Substrate is captured onto a phosphocellulose filter, which is washed free of unreacted ATP. The counts incorporated are determined by counting on a microplate scintillation counter. The ability of SD-208 to inhibit the respective kinase is determined by comparing counts incorporated in the presence of compound with those incorporated in the absence of compound.
Cell Research Cell lines Murine SMA-560 and human LN-308 glioma cells
Concentrations 1 μM
Incubation Time 48 hours
Method Glioma cells are cultured in the absence or presence of SD-208 (1 μM) for 48 hours. The cells are pulsed for the last 24 hours with [methyl-3H]thymidine (0.5 μCi) and harvested, and incorporated radioactivity is determined in a liquid scintillation counter.
In Vivo
In vivo SD-208 (1 mg/mL, p.o.) significantly prolongs the median survival of SMA-560 glioma-bearing mice. [1] In syngeneic 129S1 mice, SD-208 (60 mg/kg/d, p.o.) inhibits primary R3T tumor growth, and reduces the number and the size of lung metastases. [2] In the murine aortic allograft model, SD-208 effectively reduces the formation of intimal hyperplasia of transplant arteriosclerosis (TA). [3]
Animal Research Animal Models VM/Dk mice bearing SMA-560 tumors
Dosages 1 mg/mL
Administration p.o.

Chemical Information & Solubility

Molecular Weight 352.75 Formula

C17H10ClFN6
CAS No. 627536-09-8 SDF Download SD-208 SDF
Smiles C1=CC(=C(C=C1Cl)C2=NC3=NC=CN=C3C(=N2)NC4=CC=NC=C4)F
Storage (From the date of receipt)

In vitro
Batch:

DMSO : 9 mg/mL ( (25.51 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : Insoluble

Ethanol : Insoluble


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In vivo
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Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid 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 master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
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Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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Frequently Asked Questions

Question 1:
How to reconstitute the compound for in vivo studies?

Answer:
We recommend to dissolve S7624 in 1%methylcellulose or 1%CMC-Na which is a suspension for oral gavage administration.

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