8p1o
From Proteopedia
Solubilizer tag effect on PD-L1/inhibitor binding properties for m-terphenyl derivatives
Structural highlights
FunctionPD1L1_HUMAN Involved in the costimulatory signal, essential for T-cell proliferation and production of IL10 and IFNG, in an IL2-dependent and a PDCD1-independent manner. Interaction with PDCD1 inhibits T-cell proliferation and cytokine production.[1] [2] Publication Abstract from PubMedAlthough heavily studied, the subject of anti-PD-L1 small-molecule inhibitors is still elusive. Here we present a systematic overview of the principles behind successful anti-PD-L1 small-molecule inhibitor design on the example of the m-terphenyl scaffold, with a particular focus on the neglected influence of the solubilizer tag on the overall affinity toward PD-L1. The inhibitor developed according to the proposed guidelines was characterized through its potency in blocking PD-1/PD-L1 complex formation in homogeneous time-resolved fluorescence and cell-based assays. The affinity is also explained based on the crystal structure of the inhibitor itself and its costructure with PD-L1 as well as a molecular modeling study. Our results structuralize the knowledge related to the strong pharmacophore feature of the m-terphenyl scaffold preferential geometry and the more complex role of the solubilizer tag in PD-L1 homodimer stabilization. Solubilizer Tag Effect on PD-L1/Inhibitor Binding Properties for m-Terphenyl Derivatives.,Surmiak E, Zaber J, Plewka J, Wojtanowicz G, Kocik-Krol J, Kruc O, Muszak D, Rodriguez I, Musielak B, Viviano M, Castellano S, Skalniak L, Magiera-Mularz K, Holak TA, Kalinowska-Tluscik J ACS Med Chem Lett. 2023 Dec 14;15(1):36-44. doi: 10.1021/acsmedchemlett.3c00306. , eCollection 2024 Jan 11. PMID:38229762[3] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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