Browsing ICR Divisions by author "Van Montfort, Robert"
Now showing items 1-20 of 31
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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 ... -
Determination of Ligand-Binding Affinity (Kd) Using Transverse Relaxation Rate (R2) in the Ligand-Observed 1H NMR Experiment and Applications to Fragment-Based Drug Discovery.
Liu, M; Mirza, A; McAndrew, PC; Thapaliya, A; Pierrat, OA; et al. (AMER CHEMICAL SOC, 2023-08-10)High hit rates from initial ligand-observed NMR screening can make it challenging to prioritize which hits to follow up, especially in cases where there are no available crystal structures of these hits bound to the target ... -
Discovering cell-active BCL6 inhibitors: effectively combining biochemical HTS with multiple biophysical techniques, X-ray crystallography and cell-based assays.
Pierrat, OA; Liu, M; Collie, GW; Shetty, K; Rodrigues, MJ; et al. (NATURE PORTFOLIO, 2022-11-03)By suppressing gene transcription through the recruitment of corepressor proteins, B-cell lymphoma 6 (BCL6) protein controls a transcriptional network required for the formation and maintenance of B-cell germinal centres. ... -
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 2-(3-Benzamidopropanamido)thiazole-5-carboxylate Inhibitors of the Kinesin HSET (KIFC1) and the Development of Cellular Target Engagement Probes.
Saint-Dizier, F; Matthews, TP; Gregson, AM; Prevet, H; McHardy, T; et al. (AMER CHEMICAL SOC, 2023-02-23)The existence of multiple centrosomes in some cancer cells can lead to cell death through the formation of multipolar mitotic spindles and consequent aberrant cell division. Many cancer cells rely on HSET (KIFC1) to cluster ... -
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 ... -
Discovery of an In Vivo Chemical Probe for BCL6 Inhibition by Optimization of Tricyclic Quinolinones.
Harnden, AC; Davis, OA; Box, GM; Hayes, A; Johnson, LD; et al. (AMER CHEMICAL SOC, 2023-04-27)B-cell lymphoma 6 (BCL6) is a transcriptional repressor and oncogenic driver of diffuse large B-cell lymphoma (DLBCL). Here, we report the optimization of our previously reported tricyclic quinolinone series for the ... -
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 ... -
Improved Binding Affinity and Pharmacokinetics Enable Sustained Degradation of BCL6 In Vivo.
Huckvale, R; Harnden, AC; Cheung, K-MJ; Pierrat, OA; Talbot, R; et al. (AMER CHEMICAL SOC, 2022-06-23)The transcriptional repressor BCL6 is an oncogenic driver found to be deregulated in lymphoid malignancies. Herein, we report the optimization of our previously reported benzimidazolone molecular glue-type degrader CCT369260 ... -
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 ... -
iTAG an optimized IMiD-induced degron for targeted protein degradation in human and murine cells.
Bouguenina, H; Nicolaou, S; Le Bihan, Y-V; Bowling, EA; Calderon, C; et al. (CELL PRESS, 2023-07-21)To address the limitation associated with degron based systems, we have developed iTAG, a synthetic tag based on IMiDs/CELMoDs mechanism of action that improves and addresses the limitations of both PROTAC and previous ...