Small molecules with tetrahydroquinoline-containing Povarov scaffolds as inhibitors disrupting the Protein-RNA interaction of LIN28-let-7.
Eur J Med Chem
; 228: 114014, 2022 Jan 15.
Article
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| MEDLINE
| ID: mdl-34883291
ABSTRACT
Inhibition of the RNA-binding protein LIN28 and disruption of the protein-RNA interaction of LIN28-let-7 with small molecules holds great potential to develop new anticancer therapeutics. Herein, we report the LIN28 inhibitory activities of a series of 30 small molecules with a tricyclic tetrahydroquinoline (THQ)-containing scaffold obtained from a Povarov reaction. The THQ molecules were structurally optimized by varying the 2-benzoic acid substituent, the fused ring at 3- and 4-positions, and the substituents at the phenyl moiety of the tetrahydroquinoline core. Among the tested compounds, GG-43 showed dose-dependent inhibition in an EMSA validation assay and low micromolar inhibitory activity in a fluorescence polarization-based assay measuring disruption of LIN28-let-7 interaction. Binding mode between GG-43 and the cold shock domain of LIN28 was proposed via a molecular docking analysis. The study provides one of the first systematic analyses on structural features that are required for LIN28 inhibition, and indicates the necessity to develop small molecules with new scaffolds as LIN28-targeting probes and therapeutic candidates. In parallel, this study demonstrates the polypharmacological nature of tricyclic THQ-containing scaffolds accessible through Povarov reactions.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Quinolinas
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ARN
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Proteínas de Unión al ARN
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Bibliotecas de Moléculas Pequeñas
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Antineoplásicos
Límite:
Humans
Idioma:
En
Revista:
Eur J Med Chem
Año:
2022
Tipo del documento:
Article