6-Thioguanine - 1 g

Activity: Anticancer agent / downregulates DNMT1 . Function/Pharmacology: After incorporation into DNA, it disrupts cytosine methylation by DNA methyltransferases in vitro and acts as a DNA demethylating agent in vivo.1 It reactivates epigenetically silenced genes in acute lymphoblastic leukemia cells by facilitating proteasome-mediated degradation of DNA methyltransferase (DNMT1).2 Incorporates into DNA and induces double strand breaks which destabilize DNA structure resulting in cytotoxicity.3 Selectively kills BRCA2-defective tumors and overcomes PARP inhibitor resistance in a xenograft model.4 Anticancer and immunosuppressive activity. Chemical Name: 2-Amino-6-mercaptopurine