6-Thioguanine

6-Thioguanine (Thioguanine; 2-Amino-6-purinethiol) is an anti-leukemia and immunosuppressant agent, acts as an inhibitor of SARS and MERS coronavirus papain-like proteases (PLpros) and also potently inhibits USP2 activity, with IC₅₀s of 25 μM and 40 μM for Plpros and recombinant human USP2, respectively. IC50 & Target:IC50: 25 μM (PLpros), 40 μM (Recombinant human USP2)^[3] In Vitro: 6-Thioguanine (Thioguanine; 2-Amino-6-purinethiol) is an anti-leukemia and immunosuppressant agent, acts as an inhibitor of SARS and MERS coronavirus papain-like proteases (PLpros) and also potently inhibits USP2 activity, with IC₅₀s of 25 μM and 40 μM for Plpros and recombinant human USP2, respectively^[1]. 6-Thioguanine (Thioguanine) affects the methylation of cytosine residues by purified DNA methyltransferases including human DNMT1 and bacterial HpaII methylase. 6-Thioguanine (Thioguanine) (1 or 3 μM) decreases global cytosine methylation in Jurkat T cells and cytosine methylation in human cells at 3 μM^[2]. 6-Thioguanine (Thioguanine) (18.75, 37.50, or 75.00 μM) adversely affects cell viability, but with no effect on LDH or ALT activity^[3].