Browsing Structural Biology by author "Van Montfort, Robert"
Now showing items 1-20 of 23
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8-Substituted Pyrido[3,4-d]pyrimidin-4(3H)-one Derivatives As Potent, Cell Permeable, KDM4 (JMJD2) and KDM5 (JARID1) Histone Lysine Demethylase Inhibitors.
Bavetsias, V; Lanigan, RM; Ruda, GF; Atrash, B; McLaughlin, MG; et al. (AMER CHEMICAL SOC, 2016-02-25)We report the discovery of N-substituted 4-(pyridin-2-yl)thiazole-2-amine derivatives and their subsequent optimization, guided by structure-based design, to give 8-(1H-pyrazol-3-yl)pyrido[3,4-d]pyrimidin-4(3H)-ones, a ... -
A fragment-based approach applied to a highly flexible target: Insights and challenges towards the inhibition of HSP70 isoforms.
Jones, AM; Westwood, IM; Osborne, JD; Matthews, TP; Cheeseman, MD; et al. (NATURE PORTFOLIO, 2016-10-06)The heat shock protein 70s (HSP70s) are molecular chaperones implicated in many cancers and of significant interest as targets for novel cancer therapies. Several HSP70 inhibitors have been reported, but because the majority ... -
Achieving In Vivo Target Depletion through the Discovery and Optimization of Benzimidazolone BCL6 Degraders.
Bellenie, BR; Cheung, K-MJ; Varela, A; Pierrat, OA; Collie, GW; et al. (AMER CHEMICAL SOC, 2020-04-23)Deregulation of the transcriptional repressor BCL6 enables tumorigenesis of germinal center B-cells, and hence BCL6 has been proposed as a therapeutic target for the treatment of diffuse large B-cell lymphoma (DLBCL). ... -
An Irreversible Inhibitor of HSP72 that Unexpectedly Targets Lysine-56.
Pettinger, J; Le Bihan, Y-V; Widya, M; van Montfort, RLM; Jones, K; et al. (WILEY-V C H VERLAG GMBH, 2017-03-20)The stress-inducible molecular chaperone, HSP72, is an important therapeutic target in oncology, but inhibiting this protein with small molecules has proven particularly challenging. Validating HSP72 inhibitors in cells ... -
C8-substituted pyrido[3,4-d]pyrimidin-4(3H)-ones: Studies towards the identification of potent, cell penetrant Jumonji C domain containing histone lysine demethylase 4 subfamily (KDM4) inhibitors, compound profiling in cell-based target engagement assays.
Le Bihan, Y-V; Lanigan, RM; Atrash, B; McLaughlin, MG; Velupillai, S; et al. (ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER, 2019-09-01)Residues in the histone substrate binding sites that differ between the KDM4 and KDM5 subfamilies were identified. Subsequently, a C8-substituted pyrido[3,4-d]pyrimidin-4(3H)-one series was designed to rationally exploit ... -
Characterisation of CCT271850, a selective, oral and potent MPS1 inhibitor, used to directly measure in vivo MPS1 inhibition vs therapeutic efficacy.
Faisal, A; Mak, GWY; Gurden, MD; Xavier, CPR; Anderhub, SJ; et al. (NATURE PUBLISHING GROUP, 2017-04-25)BACKGROUND: The main role of the cell cycle is to enable error-free DNA replication, chromosome segregation and cytokinesis. One of the best characterised checkpoint pathways is the spindle assembly checkpoint, which ... -
Discovery and Characterization of a Cryptic Secondary Binding Site in the Molecular Chaperone HSP70.
O'Connor, S; Le Bihan, Y-V; Westwood, IM; Liu, M; Mak, OW; et al. (MDPI, 2022-01-26)Heat Shock Protein 70s (HSP70s) are key molecular chaperones that are overexpressed in many cancers and often associated with metastasis and poor prognosis. It has proven difficult to develop ATP-competitive, drug-like ... -
Discovery of a Chemical Probe Bisamide (CCT251236): An Orally Bioavailable Efficacious Pirin Ligand from a Heat Shock Transcription Factor 1 (HSF1) Phenotypic Screen.
Cheeseman, MD; Chessum, NEA; Rye, CS; Pasqua, AE; Tucker, MJ; et al. (AMER CHEMICAL SOC, 2017-01-12)Phenotypic screens, which focus on measuring and quantifying discrete cellular changes rather than affinity for individual recombinant proteins, have recently attracted renewed interest as an efficient strategy for drug ... -
Dissecting mechanisms of resistance to targeted drug combination therapy in human colorectal cancer.
Clarke, PA; Roe, T; Swabey, K; Hobbs, SM; McAndrew, C; et al. (NATURE PUBLISHING GROUP, 2019-06-20)Genomic alterations in cancer cells result in vulnerabilities that clinicians can exploit using molecularly targeted drugs, guided by knowledge of the tumour genotype. However, the selective activity of these drugs exerts ... -
Evaluation of APOBEC3B Recognition Motifs by NMR Reveals Preferred Substrates.
Liu, M; Mallinger, A; Tortorici, M; Newbatt, Y; Richards, M; et al. (AMER CHEMICAL SOC, 2018-09-21)APOBEC3B (A3B) deamination activity on ssDNA is considered a contributing factor to tumor heterogeneity and drug resistance in a number of human cancers. Despite its clinical impact, little is known about A3B ssDNA substrate ... -
Exploiting Protein Conformational Change to Optimize Adenosine-Derived Inhibitors of HSP70.
Cheeseman, MD; Westwood, IM; Barbeau, O; Rowlands, M; Dobson, S; et al. (AMER CHEMICAL SOC, 2016-05-26)HSP70 is a molecular chaperone and a key component of the heat-shock response. Because of its proposed importance in oncology, this protein has become a popular target for drug discovery, efforts which have as yet brought ... -
High Proliferation Rate and a Compromised Spindle Assembly Checkpoint Confers Sensitivity to the MPS1 Inhibitor BOS172722 in Triple-Negative Breast Cancers.
Anderhub, SJ; Mak, GW-Y; Gurden, MD; Faisal, A; Drosopoulos, K; et al. (AMER ASSOC CANCER RESEARCH, 2019-10-01)BOS172722 (CCT289346) is a highly potent, selective, and orally bioavailable inhibitor of spindle assembly checkpoint kinase MPS1. BOS172722 treatment alone induces significant sensitization to death, particularly in highly ... -
Into Deep Water: Optimizing BCL6 Inhibitors by Growing into a Solvated Pocket.
Lloyd, MG; Huckvale, R; Cheung, K-MJ; Rodrigues, MJ; Collie, GW; et al. (AMER CHEMICAL SOC, 2021-12-09)We describe the optimization of modestly active starting points to potent inhibitors of BCL6 by growing into a subpocket, which was occupied by a network of five stably bound water molecules. Identifying potent inhibitors ... -
Investigating the phosphinic acid tripeptide mimetic DG013A as a tool compound inhibitor of the M1-aminopeptidase ERAP1.
Wilding, B; Pasqua, AE; E A Chessum, N; Pierrat, OA; Hahner, T; et al. (PERGAMON-ELSEVIER SCIENCE LTD, 2021-06-15)ERAP1 is a zinc-dependent M1-aminopeptidase that trims lipophilic amino acids from the N-terminus of peptides. Owing to its importance in the processing of antigens and regulation of the adaptive immune response, dysregulation ... -
Multiparameter Lead Optimization to Give an Oral Checkpoint Kinase 1 (CHK1) Inhibitor Clinical Candidate: (R)-5-((4-((Morpholin-2-ylmethyl)amino)-5-(trifluoromethyl)pyridin-2-yl)amino)pyrazine-2-carbonitrile (CCT245737).
Osborne, JD; Matthews, TP; McHardy, T; Proisy, N; Cheung, K-MJ; et al. (AMER CHEMICAL SOC, 2016-06-09)Multiparameter optimization of a series of 5-((4-aminopyridin-2-yl)amino)pyrazine-2-carbonitriles resulted in the identification of a potent and selective oral CHK1 preclinical development candidate with in vivo efficacy ... -
Privileged Structures and Polypharmacology within and between Protein Families.
Meyers, J; Chessum, NEA; Ali, S; Mok, NY; Wilding, B; et al. (AMER CHEMICAL SOC, 2018-12-13)Polypharmacology is often a key contributor to the efficacy of a drug, but is also a potential risk. We investigated two hits discovered via a cell-based phenotypic screen, the CDK9 inhibitor CCT250006 (1) and the pirin ... -
Rapid Discovery of Pyrido[3,4-d]pyrimidine Inhibitors of Monopolar Spindle Kinase 1 (MPS1) Using a Structure-Based Hybridization Approach.
Innocenti, P; Woodward, HL; Solanki, S; Naud, S; Westwood, IM; et al. (AMER CHEMICAL SOC, 2016-04-28)Monopolar spindle 1 (MPS1) plays a central role in the transition of cells from metaphase to anaphase and is one of the main components of the spindle assembly checkpoint. Chromosomally unstable cancer cells rely heavily ... -
Structural and functional characterisation of human RNA helicase DHX8 provides insights into the mechanism of RNA-stimulated ADP release.
Felisberto-Rodrigues, C; Thomas, JC; McAndrew, C; Le Bihan, Y-V; Burke, R; et al. (PORTLAND PRESS LTD, 2019-09-13)DHX8 is a crucial DEAH-box RNA helicase involved in splicing and required for the release of mature mRNA from the spliceosome. Here, we report the biochemical characterisation of full-length human DHX8 and the catalytically ... -
Structure-based drug design: aiming for a perfect fit.
van Montfort, RLM; Workman, P (PORTLAND PRESS LTD, 2017-11-08)Knowledge of the three-dimensional structure of therapeutically relevant targets has informed drug discovery since the first protein structures were determined using X-ray crystallography in the 1950s and 1960s. In this ... -
Structure-Enabled Discovery of a Stapled Peptide Inhibitor to Target the Oncogenic Transcriptional Repressor TLE1.
McGrath, S; Tortorici, M; Drouin, L; Solanki, S; Vidler, L; et al. (WILEY-V C H VERLAG GMBH, 2017-07-18)TLE1 is an oncogenic transcriptional co-repressor that exerts its repressive effects through binding of transcription factors. Inhibition of this protein-protein interaction represents a putative cancer target, but no ...