SB 431542
mRNA synthesis
In vitro transcription of capped mRNA with modified nucleotides and Poly(A) tail
Tyramide Signal Amplification (TSA)
TSA (Tyramide Signal Amplification), used for signal amplification of ISH, IHC and IC etc.
Phos Binding Reagent Acrylamide
Separation of phosphorylated and non-phosphorylated proteins without phospho-specific antibody
Cell Counting Kit-8 (CCK-8)
A convenient and sensitive way for cell proliferation assay and cytotoxicity assay
SYBR Safe DNA Gel Stain
Safe and sensitive stain for visualization of DNA or RNA in agarose or acrylamide gels.
Inhibitor Cocktails
Protect the integrity of proteins from multiple proteases and phosphatases for different applications.
SB431542 is a selective ATP-competitive inhibitor of ALK5 (activin receptor-like kinase 5) with an IC50 value of 94 nM [1].
SB431542 showed most potent efficacy among the series of hits screened out. It inhibited TGF-β1-induced mRNA formation in A498 cells with IC50 value of 50 nM. It also markedly reduced TGF-β-induced nuclear accumulation of Smad proteins with IC50 value of 40 nM. SB431542 was found to be a selective inhibitor for ALK4, ALK5 and ALK7, suppresses the phosphorylation of Smad2. It showed no significant inhibition of ALK1, ALK2, ALK6 and showed weak effect on ALK3 at concentration of 10 μM [1, 2].
References:
[1] Callahan J F, Burgess J L, Fornwald J A, et al. Identification of novel inhibitors of the transforming growth factor β1 (TGF-β1) type 1 receptor (ALK5). Journal of medicinal chemistry, 2002, 45(5): 999-1001.
[2] Inman G J, Nicolás F J, Callahan J F, et al. SB-431542 is a potent and specific inhibitor of transforming growth factor-β superfamily type I activin receptor-like kinase (ALK) receptors ALK4, ALK5, and ALK7. Molecular pharmacology, 2002, 62(1): 65-74.
- 1. Wang S, Zhang M, et al. "microRNA-141 inhibits TGF-β1-induced epithelial-to-mesenchymal transition through inhibition of the TGF-β1/SMAD2 signalling pathway in endometriosis." Arch Gynecol Obstet. 2020;10.1007/s00404-019-05429-w. PMID:31903498
- 2. Wu F, Wu D, et al. "Generation of hepato-biliary organoids from human induced pluripotent stem cells." J Hepatol. 2019 Jan 7. pii: S0168-8278(19)30002-9. PMID:30630011
- 3. Bae JS, Jeon Y, et al. "Depletion of MOB1A/B causes intestinal epithelial degeneration by suppressing Wnt activity and activating BMP/TGF-β signaling." Cell Death Dis. 2018 Oct 22;9(11):1083. PMID:30349003
| Physical Appearance | A solid |
| Storage | Store at RT |
| M.Wt | 384.39 |
| Cas No. | 301836-41-9 |
| Formula | C22H16N4O3 |
| Solubility | ≥19.2mg/mL in DMSO, ≥10.06 mg/mL in EtOH with ultrasonic,insoluble in H2O |
| Chemical Name | 4-[4-(1,3-benzodioxol-5-yl)-5-pyridin-2-yl-1H-imidazol-2-yl]benzamide |
| SDF | Download SDF |
| Canonical SMILES | C1OC2=C(O1)C=C(C=C2)C3=C(NC(=N3)C4=CC=C(C=C4)C(=O)N)C5=CC=CC=N5 |
| Shipping Condition | Evaluation sample solution: ship with blue ice. All other available sizes: ship with RT, or blue ice upon request. |
| General tips | For 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] | |
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Cell lines |
D54MG, U87MG and U373MG cells |
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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. |
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Reaction Conditions |
10 μM, 24 hours |
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Applications |
SB-431542 at both 0.1 and 1μmol/L had a modest effect on DNA synthesis, but at 10 μmol/L, there was a consistent 60% to 70% reduction of thymidine incorporation for D54MG, U87MG, and U373MG cells. No evidence of apoptotic cell death on SB-431542 treatment was detected either by direct observation or on propidium iodide flow cytometric analysis. Thus, SB-431542 acts to inhibit the proliferation of the tested malignant glioma lines. |
| Animal experiment: [2] | |
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Animal models |
BALB/c mice injected with colon-26 cells |
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Dosage form |
Intraperitoneal injection, 1 μM |
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Applications |
Intraperitoneal injection of SB-431542 resulted in triggering CTL activities against colon-26 targets compared with vehicle alone. Moreover, the CTL activity against colon-26 cells was more potent when treated with SB combined a ligand for toll-like receptor 4, OK-432, compared with OK-432 alone. Thus, SB-431542 is likely to produce antitumor immunological outcomes through alteration of DC function suppressed by TGFß. |
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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. |
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References: [1] Hjelmeland M D, Hjelmeland A B, Sathornsumetee S, et al. SB-431542, a small molecule transforming growth factor-β-receptor antagonist, inhibits human glioma cell line proliferation and motility. Molecular Cancer Therapeutics, 2004, 3(6): 737-745. [2] Tanaka H, Shinto O, Yashiro M, et al. Transforming growth factor b signaling inhibitor, SB-431542, induces maturation of dendritic cells and enhances anti-tumor activity. Oncology reports, 2010, 24: 1637-1643. |
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| Description | SB431542 is a potent and selective inhibitor of ALK5 with IC50 of 94 nM, 100-fold more selective for ALK5 than p38 MAPK and other kinases. | |||||
| Targets | ALK5 | |||||
| IC50 | 94 nM | |||||
Quality Control & MSDS
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