| Bioactivity | (E)-SIS3 is a potent and selective inhibitor of Smad3 with an IC50 of 3 μM for Smad3 phosphorylation. (E)-SIS3 inhibits the myofibroblast differentiation of fibroblasts by TGF-β1[1]. |
| Target | IC50: 3 μM (Smad3 phosphorylation) |
| Invitro | (E)-SIS3 (0.3-10 μM; for 1 hour) attenuates the TGF-beta1-induced phosphorylation of Smad3 and interaction of Smad3 with Smad4[1]. (E)-SIS3 (0.1 , 10, 50 μM; 30 min) significantly suppresses the expression of FN and α-SMA, but not that of Sphk2 provoked by TGF-β1[2]. (E)-SIS3 (10 μM; 24 hours) significantly reduces both α-SMA and palladin expression that is enhanced by TWEAK in Primary human dermal fibroblasts[3]. (E)-SIS3 significantly inhibits L4 development at five concentrations from as low as 2 µM to 50 µM (5 µM, 10 µM, 20 µM and 50 µM) in a dose-dependent manner[4]. Western Blot Analysis[1] Cell Line: |
| Name | (E)-SIS3 |
| CAS | 521984-48-5 |
| Formula | C28H28ClN3O3 |
| Molar Mass | 489.99 |
| Appearance | Solid |
| Transport | Room temperature in continental US; may vary elsewhere. |
| Storage | 4°C, sealed storage, away from moisture *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture) |
| Reference | [1]. Jinnin M et al. Characterization of SIS3, a novel specific inhibitor of Smad3, and its effect on transforming growth factor-beta1-induced extracellular matrix expression. Mol Pharmacol. 2006 Feb;69(2):597-607. [2]. Zhu X, et al. Sphingosine kinase 2 cooperating with Fyn promotes kidney fibroblast activation and fibrosis via STAT3 and AKT. Biochim Biophys Acta Mol Basis Dis. 2018 Nov;1864(11):3824-3836. [3]. Liu J, et al. Topical TWEAK Accelerates Healing of Experimental Burn Wounds in Mice. Front Pharmacol. 2018 Jun 21;9:660. [4]. Li FF, et al. Identification and characterization of an R-Smad homologue (Hco-DAF-8) from Haemonchuscontortus. Parasit Vectors. 2020 Apr 3;13(1):164. |
(E)-SIS3
CAS: 521984-48-5 F: C28H28ClN3O3 W: 489.99
(E)-SIS3 is a potent and selective inhibitor of Smad3 with an IC50 of 3 μM for Smad3 phosphorylation. (E)-SIS3 inhibits
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