TH287 hydrochloride

TH287 is a potent inhibitor of human 7,8-Dihydro-8-oxoguaninetriphosphatase MTH1 (NUDT1) with an IC₅₀ value of 0.8 nM. MTH1 hydrolyzes oxidized purine nucleoside triphosphates that might otherwise be incorporated into DNA/RNA and contribute to DNA damage. MTH1 removal of oxidized nucleotides that result from increased levels of reactive oxygen species (ROS) in fast-proliferating cancer cells helps protect cancer cells from proliferative stress and prevent cancer cell death. TH287 is considered a new target for cancer therapy. TH287 is highly selective towards MTH1, with no relevant inhibition of other members of the nudix protein family. TH287 has been shown to selectively kill a variety of cancer cell lines, but is rapidly metablized, so not as useful for in vivo studies.