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AA-CW236 is a cell-permeable chloromethyl triazole (CMT) derivative that acts as a non-pseudosubstrate inhibitor against human O(6)-alkylguanine DNA methyltransferase (MGMT) by targeting MGMT active site Cys145 for covalent modification (KI = 24 nM, kinact = 0.03/min), displaying little affinity toward cysteines from other cellular proteins. AA-CW236 pretreatment (1 μM) effectively prevents MGMT from repairing DNA damage, causing significantly more upregulated O6-alkylguanine accumulation than the pseudosubstrate inhibitor Lomeguatrib (1 μM) when co-administered with the DNA-alkylating agent Temozolomide/TMZ (300 μM) in MCF-7 cells. Likewise, AA-CW236 is shown to boost TMZ toxicity in Caco-2 cultures (IC50 = 227 and 673 μM, respectively, with or without 3 μM AA-CW236 co-treatment).
| Molecular Weight | 400.78 |
| Formula | C17H16ClF3N4O2 |
| CAS Number | 1869921-96-9 |
| Solubility (25°C) | DMSO: 25 mg/mL protein |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
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