SIS3 free base is a potent and selective Smad3 phosphorylation inhibitor. SIS3 free base inhibits the myofibroblast differentiation of fibroblasts by TGF-β1.
Butaprost is a chemical compound that functions as a selective agonist for the prostaglandin E receptor (EP2). It exhibits an EC50 of 33 nM and a Ki of 2.4 μM when interacting with the murine EP2 receptor. However, Butaprost demonstrates lower activity against murine EP1, EP3, and EP4 receptors. Furthermore, it effectively attenuates fibrosis by inhibiting the TGF-β Smad2 signaling pathway [1] [2] [3].
Lipoxygenin is an inhibitor of 5-lipoxygenase (5-LO) with an IC50value of 5 μM for inhibition of 5-LO product synthesis in isolated human granulocytes stimulated with the cation ionophore A23187 .1It inhibits hedgehog-dependent signaling in Shh-LIGHT2 cells and TGF-β-, activin A-, bone morphogenic protein (BMP)-, or Wnt-dependent signaling in HEK293T cells (IC50s = 9.3, 3.2, 8.2, 9.6, and 3.7 μM, respectively, in luciferase reporter assays). Lipoxygenin (5 and 10 μM) increases levels of troponin T (TnnT), a marker of cardiomyocyte differentiation, in human induced pluripotent stem cells (iPSCs) stimulated with BMP4 and the glycogen synthase kinase 3 (GSK3) inhibitor CHIR99021 .
Isoangustone A has antitumor activity, it can induce G1 cycle arrest in DU145 human prostate and 4T1 murine mammary cancer cells, it inhibits cell proliferation by targeting PI3K, MKK4, and MKK7 in human melanoma. Isoangustone A dampens mesangial sclerosis associated with inflammation in response to high glucose through hindering TGF-β and NF-κB signaling. Isoangustone A also shows strong ferric reducing activities and effectively scavenged DPPH, ABTS(+), and singlet oxygen radicals.