Toggle Nav
  • Menu
  • Setting


Catalog No.
TGF-βR1 inhibitor,potent and selective
Grouped product items
SizePriceStock Qty
10mM (in 1mL DMSO)
In stock
Evaluation Sample
In stock
In stock
In stock
In stock

Tel: +1-832-696-8203

Email: [email protected]

Worldwide Distributors


LY2157299 is a potent small-molecule antagonist that specifically inhibits Transforming Growth Factor-β receptor I (TβRI). LY2157299 is now under phase II clinical evaluation of its anti-carcinoma activity against hepatocellular carcinoma and glioblastoma1.

LY2157299 has been shown to inhibit β1-integrin activation and block the invasion and migration of hepatocellular cancer cells. In addition, multiple studies have revealed LY2157299 blocked the CTGF production and inhibited neoangiogenesis resulting suppression of hepatocellular carcinoma growth1.

LY2157299 has been reported to decrease phosphorylated Smad2 and Smad3 expression and inhibit the tumor growth in both human anaplastic carcinoma lung cell (Calu6) or human carcinoma breast cell (MX1) xenografted nude mice2.

1. Giannelli G1, Villa E, Lahn M.Transforming Growth Factor-β as a Therapeutic Target in Hepatocellular Carcinoma. Cancer Res. 2014 Apr 1;74(7):1890-4. doi: 10.1158/0008-5472.CAN-14-0243. Epub 2014 Mar 17.
2. Bueno L1, de Alwis DP, Pitou C, Yingling J, Lahn M, Glatt S, Trocóniz IFSemi-mechanistic modelling of the tumour growth inhibitory effects of LY2157299, a new type I receptor TGF-beta kinase antagonist, in mice. Eur J Cancer. 2008 Jan;44(1):142-50.

Product Citation

Chemical Properties

StorageStore at -20°C
Cas No.700874-72-2
SynonymsLY-2157299;LY 2157299
Solubilityinsoluble in H2O; ≥18.45 mg/mL in DMSO; ≥26.15 mg/mL in EtOH
Chemical Name4-[2-(6-methylpyridin-2-yl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl]quinoline-6-carboxamide
SDFDownload SDF
Canonical SMILESCC1=CC=CC(=N1)C2=NN3CCCC3=C2C4=C5C=C(C=CC5=NC=C4)C(=O)N
Shipping ConditionEvaluation sample solution: ship with blue ice. All other available sizes: ship with RT, or blue ice upon request.
General tipsFor obtaining a higher solubility, please warm the tube at 37°C and shake it in the ultrasonic bath for a while. Stock solution can be stored below -20°C for several months.


Cell experiment: [1]

Cell lines

HLE and HLF cells

Preparation method

The solubility of this compound in DMSO is >10 mM. General tips for obtaining a higher concentration: Please warm the tube at 37 °C for 10 minutes and/or shake it in the ultrasonic bath for a while.Stock solution can be stored below -20°C for several months.

Reaction Conditions

100 nM, 16 hours


HLE and HLF cells were allowed to migrate for 16 hours on fibronectin, vitronectin, laminin-5 and fibrinogen in the presence of increasing concentrations (1 nM, 10 nM and 100 nM) of LY2157299. LY2157299 significantly inhibited HLE and HLF migration on different ECM substrates. When testing the inhibition of Smad phosphorylation, two different HCC cell lines were pretreated for 16 hours with 100 nM of LY2157299 and then stimulated with 2 ng of TGF-β1 for 30 min. LY2157299 inhibited de novo phosphorylation of p-SMAD2 at the same efficiency in HLE and HLF after stimulation with TGF-β1. Besides that, increased expression of E-cadherin was observed in HLE and HLF cells after treatment for 48 hours.

Animal experiment: [2]

Animal models

Nude mice implanted with Calu6 or MX1 cells

Dosage form

Oral administration, 75mg/kg, twice a day


LY2157299 induced a 70% decrease in phosphorylated Smad (pSmad) for both types of cell lines. The time at which pSmad recovered 80% of baseline was approximately 6 h after administration.

Other notes

Please test the solubility of all compounds indoor, and the actual solubility may slightly differ with the theoretical value. This is caused by an experimental system error and it is normal.


[1] Dituri F, Mazzocca A, Peidrò F J, et al. Differential inhibition of the TGF-β signaling pathway in HCC cells using the small molecule inhibitor LY2157299 and the D10 monoclonal antibody against TGF-β receptor type II. PloS one, 2013, 8(6): e67109.

[2] Bueno L, de Alwis D P, Pitou C, et al. Semi-mechanistic modelling of the tumour growth inhibitory effects of LY2157299, a new type I receptor TGF-β kinase antagonist, in mice. European journal of cancer, 2008, 44(1): 142-150.

Biological Activity

Description LY2157299 is a potent inhibitor of TGFβ receptor I (TβRI) with IC50 of 56 nM.
Targets TβRI          
IC50 56 nM          

Quality Control

Chemical structure


Related Biological Data


Related Biological Data


Related Biological Data


Related Biological Data