Structure-Based Optimization of a Series of Covalent, Cell Active Bfl‑1 Inhibitors

Bfl-1, a member of the Bcl-2 family of proteins, plays a crucial role in apoptosis regulation and has been implicated in cancer cell survival and resistance to venetoclax therapy. Due to the unique cysteine residue in the BH3 binding site, the development of covalent inhibitors targeting Bfl-1 repre...

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Veröffentlicht in:Journal of medicinal chemistry 2024-09, Vol.67 (18), p.16455-16479
Hauptverfasser: Lucas, Simon C. C., Blackwell, J. Henry, Börjesson, Ulf, Hargreaves, David, Milbradt, Alexander G., Bostock, Mark J., Ahmed, Samiyah, Beaumont, Kevin, Cheung, Tony, Demanze, Sylvain, Gohlke, Andrea, Guerot, Carine, Haider, Afreen, Kantae, Vasudev, Kauffman, Gregory W., Kinzel, Olaf, Kupcova, Lea, Lainchbury, Michael D., Lamb, Michelle L., Leon, Leonardo, Palisse, Adeline, Sacchetto, Claudia, Storer, R. Ian, Su, Nancy, Thomson, Clare, Vales, John, Chen, Yunhua, Hu, Xiaolong
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container_issue 18
container_start_page 16455
container_title Journal of medicinal chemistry
container_volume 67
creator Lucas, Simon C. C.
Blackwell, J. Henry
Börjesson, Ulf
Hargreaves, David
Milbradt, Alexander G.
Bostock, Mark J.
Ahmed, Samiyah
Beaumont, Kevin
Cheung, Tony
Demanze, Sylvain
Gohlke, Andrea
Guerot, Carine
Haider, Afreen
Kantae, Vasudev
Kauffman, Gregory W.
Kinzel, Olaf
Kupcova, Lea
Lainchbury, Michael D.
Lamb, Michelle L.
Leon, Leonardo
Palisse, Adeline
Sacchetto, Claudia
Storer, R. Ian
Su, Nancy
Thomson, Clare
Vales, John
Chen, Yunhua
Hu, Xiaolong
description Bfl-1, a member of the Bcl-2 family of proteins, plays a crucial role in apoptosis regulation and has been implicated in cancer cell survival and resistance to venetoclax therapy. Due to the unique cysteine residue in the BH3 binding site, the development of covalent inhibitors targeting Bfl-1 represents a promising strategy for cancer treatment. Herein, the optimization of a covalent cellular tool from a lead-like hit using structure based design is described. Informed by a reversible X-ray fragment screen, the strategy to establish interactions with a key glutamic acid residue (Glu78) and optimize binding in a cryptic pocket led to a 1000-fold improvement in biochemical potency without increasing reactivity of the warhead. Compound (R,R,S)-26 has a k inact /K I of 4600 M–1 s–1, shows
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subjects Animals
Antineoplastic Agents - chemical synthesis
Antineoplastic Agents - chemistry
Antineoplastic Agents - pharmacology
Apoptosis - drug effects
Cell Line, Tumor
Crystallography, X-Ray
Humans
Mice
Minor Histocompatibility Antigens
Models, Molecular
Molecular Structure
Proto-Oncogene Proteins c-bcl-2 - antagonists & inhibitors
Proto-Oncogene Proteins c-bcl-2 - metabolism
Structure-Activity Relationship
title Structure-Based Optimization of a Series of Covalent, Cell Active Bfl‑1 Inhibitors
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