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1. Design of a Cereblon construct for crystallographic and biophysical studies of protein degraders

Author

Alena Kroupova, Valentina A. Spiteri, Zoe J. Rutter, Hirotake Furihata, Darren Darren, Sarath Ramachandran, Sohini Chakraborti, Kevin Haubrich, Julie Pethe, Denzel Gonzales, Andre J. Wijaya, Maria Rodriguez-Rios, Manon Sturbaut, Dylan M. Lynch, William Farnaby, Mark A. Nakasone, David Zollman, and Alessio Ciulli

Subjects
Science
Abstract

Abstract The ubiquitin E3 ligase cereblon (CRBN) is the target of therapeutic drugs thalidomide and lenalidomide and is recruited by most targeted protein degraders (PROTACs and molecular glues) in clinical development. Biophysical and structural investigation of CRBN has been limited by current constructs that either require co-expression with the adaptor DDB1 or inadequately represent full-length protein, with high-resolution structures of degrader ternary complexes remaining rare. We present the design of CRBNmidi, a construct that readily expresses from E. coli with high yields as soluble, stable protein without DDB1. We benchmark CRBNmidi for wild-type functionality through a suite of biophysical techniques and solve high-resolution co-crystal structures of its binary and ternary complexes with degraders. We qualify CRBNmidi as an enabling tool to accelerate structure-based discovery of the next generation of CRBN based therapeutics.

Published
2024
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2. Toward the Discovery of a Novel Class of YAP–TEAD Interaction Inhibitors by Virtual Screening Approach Targeting YAP–TEAD Protein–Protein Interface

Author

Cotelle, Floriane Gibault, Mathilde Coevoet, Manon Sturbaut, Amaury Farce, Nicolas Renault, Frédéric Allemand, Jean-François Guichou, Anne-Sophie Drucbert, Catherine Foulon, Romain Magnez, Xavier Thuru, Matthieu Corvaisier, Guillemette Huet, Philippe Chavatte, Patricia Melnyk, Fabrice Bailly, and Philippe

Subjects
protein-protein interaction, YAP-TEAD disruption, molecular docking, binding assays, anticancer
Abstract

Intrinsically disordered protein YAP (yes-associated protein) interacts with TEADs transcriptional factors family (transcriptional enhancer associated domain) creating three interfaces. Interface 3, between the Ω-loop of YAP and a shallow pocket of TEAD was identified as the most important TEAD zone for YAP-TEAD interaction. Using the first X-ray structure of the hYAP50–71-hTEAD1209–426 complex (PDB 3KYS) published in 2010, a protein-protein interaction inhibitors-enriched library (175,000 chemical compounds) was screened against this hydrophobic pocket of TEAD. Four different chemical families have been identified and evaluated using biophysical techniques (thermal shift assay, microscale thermophoresis) and in cellulo assays (luciferase activity in transfected HEK293 cells, RTqPCR in MDA-MB231 cells). A first promising hit with micromolar inhibition in the luciferase gene reporter assay was discovered. This hit also decreased mRNA levels of TEAD target genes.

Published
2018
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