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© Research
Publication : Journal of biomolecular screening

Identification of Small Inhibitory Molecules Targeting the Bfl-1 Anti-Apoptotic Protein That Alleviates Resistance to ABT-737

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Journal of biomolecular screening - 08 May 2014

Mathieu AL, Sperandio O, Pottiez V, Balzarin S, Herlédan A, Elkaïm JO, Fogeron ML, Piveteau C, Dassonneville S, Deprez B, Villoutreix BO, Bonnefoy N, Leroux F

Link to Pubmed [PMID] – 24809353

J Biomol Screen 2014 Aug;19(7):1035-46

One approach currently being developed in anticancer drug discovery is to search for small compounds capable of occupying and blocking the hydrophobic pocket of anti-apoptotic Bcl-2 family members necessary for interacting with pro-apoptotic proteins. Such an approach led to the discovery of several compounds, such as ABT-737 (which interacts with Bcl-2, Bcl-xl, and Bcl-w) or the latest one, ABT-199, that selectively targets Bcl-2 protein. The efficacy of those compounds is, however, limited by the expression of two other anti-apoptotic Bcl-2 members, Mcl-1 and Bfl-1. Based on the role of Bfl-1 in cancer, especially in chemoresistance associated with its overexpression in B-cell malignancies, we searched for modulators of protein-protein interaction through a high-throughput screening of a designed chemical library with relaxed drug-like properties to identify small molecules targeting Bfl-1 anti-apoptotic protein. We found two compounds that display electrophilic functions, interact with Bfl-1, inhibit Bfl-1 protective activity, and promote cell death of malignant B cells. Of particular interest, we observed a synergistic effect of those compounds with ABT-737 in Bfl-1 overexpressing lymphoma cell lines. Our results provide the basis for the development of Bfl-1 specific antagonists for antitumor therapies.

https://www.ncbi.nlm.nih.gov/pubmed/24809353