TGF-β/Smad-IN-3 (Compound 4w) is an effective TGF-β/Smad inhibitor. TGF-β/Smad-IN-3 exerts anti-pulmonary fibrosis activity by simultaneously inhibiting the TGF-β/Smad and MAPK signaling pathways. TGF-β/Smad-IN-3 significantly inhibits collagen deposition induced by TGF-β1, with its IC50 value being 3.21 μM. TGF-β/Smad-IN-3 has an IC₅₀ of 46.77 nM for the autocrine motility factor (ATX). TGF-β/Smad-IN-3 significantly reduces the expression levels of α-SMA, COL1A1 and FN in TGF-β1-induced CCC-HPF-1 cells, and effectively inhibited TGF-β1-induced cell migration. TGF-β/Smad-IN-3 can be used for the study of pulmonary fibrosis.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.