7nb7 | pdb_00007nb7
Structure of Mcl-1 complex with compound 6b
Structural highlights
FunctionMCL1_HUMAN Involved in the regulation of apoptosis versus cell survival, and in the maintenance of viability but not of proliferation. Mediates its effects by interactions with a number of other regulators of apoptosis. Isoform 1 inhibits apoptosis. Isoform 2 promotes apoptosis.[1] Publication Abstract from PubMedFollowing the identification of thieno[2,3-d]pyrimidine-based selective and potent inhibitors of MCL-1, we explored the effect of core swapping at different levels of advancement. During hit-to-lead optimization, X-ray-guided S-N replacement in the core provided a new vector, whose exploration led to the opening of the so-called deep-S2 pocket of MCL-1. Unfortunately, the occupation of this region led to a plateau in affinity and had to be abandoned. As the project approached selection of a clinical candidate, a series of core swap analogues were also prepared. The affinity and cellular activity of these compounds showed a significant dependence on the core structure. In certain cases, we also observed an increased and accelerated epimerization of the atropoisomers. The most potent core replacement analogues showed considerable in vivo PD response. One compound was progressed into efficacy studies and inhibited tumor growth. The Effect of Core Replacement on S64315, a Selective MCL-1 Inhibitor, and Its Analogues.,Sipos S, Balint B, Szabo ZB, Ondi L, Csekei M, Szlavik Z, Proszenyak A, Murray JB, Davidson J, Chen I, Dokurno P, Surgenor AE, Pedder C, Hubbard RE, Maragno AL, Chanrion M, Colland F, Geneste O, Kotschy A ACS Omega. 2021 Aug 18;6(34):22073-22102. doi: 10.1021/acsomega.1c02595., eCollection 2021 Aug 31. PMID:34497901[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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