fs-3

ATX inhibitor 1 is a potent ATX inhibitor with IC50 values of 1.23 nM (FS-3) and 2.18 nM (bis-pNPP).

Heliquinomycin is a bacterial metabolite originally isolated fromStreptomycesthat has diverse biological activities.1It is active against a variety of Gram-positive bacteria, including strains ofB. anthracis, B. subtilis, and methicillin-sensitive or -resistantS. aureus(MICs = <0.05-0.39 μg/ml). Heliquinomycin inhibits the activity of DNA helicase with a Kivalue of 6.8 μM. It reduces the growth of L1210 leukemia, B16 melanoma, and FS-3 fibrosarcoma cells (IC50s = 0.97, 0.89, and 0.83 μg/ml, respectively). 1.Chino, M., Nishikawa, K., Umekita, M., et al.Heliquinomycin, a new inhibitor of DNA helicase, produced by Streptomyces sp. MJ929-SF2 I. Taxonomy, production, isolation, physico-chemical properties and biological activitiesJ. Antibiot. (Tokyo)49(8)752-757(1996)

1-Decarboxy-3-oxo-ceanothic acid exhibits in vitro cytotoxic activity in a human ovarian adenocarcinoma cell line, mediated at least in part by induction of apoptosis. It is cytotoxic against OVCAR-3 and HeLa cancer cell lines with IC50 values of 2.8 and 6.6 microg mL, respectively, and has an IC50 of 11.3 microg mL against normal cell line FS-5.

Lactonamycin exhibits significant activity against Gram-positive bacteria, including Staphylococcus, Streptococcus, Enterococcus, MRSA (MIC of 0.39-0.78 μg/mL), and VRE (MIC of 0.39-0.78 μg/mL). It also demonstrates inhibitory effects on various tumor cell lines such as L-1210, P388, S180, FS-3, Ehrlich, and B16-BL5 (IC50 of 0.06-3.3 μg/mL).