Synthesis and Biological Evaluation of Novel Anti-Leukemia Proteolysis-Targeting Chimeras in Degradating Inosine Monophosphate Dehydrogenase Publisher



Sohbati H¹ ; Amini M^{1, 2} ; Balalaie S³
Source: Iranian Journal of Pharmaceutical Research Published:2022

Abstract

Background: Proteolysis-targeting chimera (PROTAC) is a bifunctional molecule comprising a ligand to recognize the targeted protein to be degraded. Objectives: To use the advantages of the PROTAC technique, we have synthesized novel compounds to degrade inosine monophos-phate dehydrogenase (IMPDH) by the proteasome system. Methods: We describe the synthesis of new PROTACs based on a combination of mycophenolic acid (MPA) as the potent IMPDH inhibitor and pomalidomide as a ligand of E3 ubiquitin ligase via linkers formed from Cu(I)-catalyzed cycloaddition reaction. Results: All synthesized compounds were investigated against Jurkat cells as acute T-cell leukemia and were potent apoptosis in-ducers at 50 nM. Conclusion: The effect of compound 2 in 0.05 µM on IMPDH degradation can be almost prevented by competition with bortezomib as the proteasome inhibitor at 0.1 and 0.5 µM. © 2022, Author(s).