Nucleoside diphosphate-linked moiety X motif 17 (NUDT17) Inhibitors consist of a diverse array of chemical compounds that inhibit the functional activity of NUDT17 by targeting various aspects of nucleotide metabolism and availability. Compounds such as Hydroxyurea, Methotrexate, Mycophenolic acid, and Fluorouracil exert their inhibitory effects by disrupting the synthesis of ribonucleotides and deoxyribonucleotides, thereby potentially limiting the substrates that NUDT17 requires to function. Allopurinol and 6-Thioguanine, by interfering with purine catabolism and acting as purine antimetabolites respectively, may diminish NUDT17's activity by altering the balance of nucleotides within the cell. This shift in nucleotide pools could reduce the availability of specific substrates that NUDT17 acts upon, thereby indirectly decreasing its activity. Similarly, Azathioprine, which is metabolized into 6-mercaptopurine, inhibits purine synthesis and could lead to a decrease in NUDT17 activity by limiting necessary substrates. Ribavirin, 3′-Azido-3′-deoxythymidine, and Tenofovir, as nucleotide analogues, may contribute to the inhibition of NUDT17 by interfering with nucleotide synthesis and metabolism.
Adenosine, by modulating adenosine receptors, can lead to decreased cAMP levels, which in turn could reduce the activity of protein kinases such as PKA that might be responsible for modifying substrates or regulatory proteins relevant to NUDT17's function. The inhibition of ribonucleotide reductase by Hydroxyurea and 2-Chloro-2′-deoxyadenosine affects the deoxyribonucleotide pools, which are crucial for DNA synthesis and repair, pathways that NUDT17 may be involved in. These inhibitors, through their targeted effects on nucleotide synthesis, metabolism, and signaling pathways, collectively contribute to the indirect inhibition of NUDT17 by modulating the chemical environment that influences its functional activity. The chemical-mediated alteration in substrate availability and modification processes without directly targeting NUDT17's catalytic activity underscores the intricacy of cellular regulation and the potential for indirect inhibition through the manipulation of metabolic pathways.