A-83-01

Catalog No.S7692

For research use only.

A-83-01 is a potent inhibitor of TGF-β type I receptor (ALK5-TD) with IC50 of 12 nM. A-83-01 also inhibits the transcription induced by activin/nodal type I receptor (ALK4-TD) and nodal type I receptor (ALK7-TD) with IC50 of 45 nM and 7.5 nM, respectively.Solutions are best fresh-prepared.

A-83-01 Chemical Structure

CAS No. 909910-43-6

Selleck's A-83-01 has been cited by 8 Publications

Purity & Quality Control

Choose Selective TGF-beta/Smad Inhibitors

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Biological Activity

Description A-83-01 is a potent inhibitor of TGF-β type I receptor (ALK5-TD) with IC50 of 12 nM. A-83-01 also inhibits the transcription induced by activin/nodal type I receptor (ALK4-TD) and nodal type I receptor (ALK7-TD) with IC50 of 45 nM and 7.5 nM, respectively.Solutions are best fresh-prepared.
Targets
ALK7 [1]
(Cell-free assay)
ALK5 [1]
(Cell-free assay)
ALK4 [1]
(Cell-free assay)
7.5 nM 12 nM 45 nM
In vitro

A-83-01 inhibits the transcriptional activity induced by TGF-β type I receptor ALK-5 and that by activin type IB receptor ALK-4 and nodal type I receptor ALK-7, the kinase domains of which are structurally highly related to those of ALK-5. A-83-01 is potent in the inhibition of ALK5 and also prevents phosphorylation of Smad2/3 and the growth inhibition induced by TGF-β.[1]

In vivo

A83-01 treatment significantly increases the number of Nkx2.5+ cardiomyoblasts at baseline and after myocardial injury, resulting in an increase in newly formed cardiomyocytes. A83-01 treatment significantly improves ventricular elastance and stroke work, leading to improved contractility after injury.[2]

Protocol (from reference)

Cell Research:

[1]

  • Cell lines: Wild-type mink lung epithelial (Mv1Lu) cells, R mutant of Mv1Lu (R4-2) cells, HaCaT cells, C2C12 cells, NMuMG cells
  • Concentrations: 1 μM
  • Incubation Time: 1 h
  • Method:

    Cell proliferation assay: Mv1Lu cells are seeded in duplicate at a density of 2.5 × 104 cells/well in 24-well plates. The following day, cells are pretreated for 1 h with 1 μM A-83-01 and then cultured with TGF-β (1 ng/mL) for 24 h, 48 h, or 72 h. Cells are trypsinized and counted with a Coulter counter. To explore whether A-83-01 reduces the growth-inhibitory effects of TGF-β in concentration-dependent fashion, Mv1Lu cells are seeded as above and pretreated for 1 h with various concentrations of A-83-01. After pretreatment, cells are cultured with TGF-β (1 ng/mL) for 48 h and counted.

Animal Research:

[2]

  • Animal Models: 8–10 week old Nkx2.5 enhancer-eGFP transgenic mice
  • Dosages: 10 mg/kg
  • Administration: IP

Solubility (25°C)

In vitro

Chemical Information

Molecular Weight 421.52
Formula

C25H19N5S

CAS No. 909910-43-6
Storage 3 years -20°C powder
Smiles CC1=NC(=CC=C1)C2=NN(C=C2C3=CC=NC4=CC=CC=C34)C(=S)NC5=CC=CC=C5

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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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