PUBLICATION

Discovery of 1-Benzhydryl-Piperazine-Based HDAC Inhibitors with Anti-Breast Cancer Activity: Synthesis, Molecular Modeling, In Vitro and In Vivo Biological Evaluation

Authors
Ruzic, D., Ellinger, B., Djokovic, N., Santibanez, J.F., Gul, S., Beljkas, M., Djuric, A., Ganesan, A., Pavic, A., Srdic-Rajic, T., Petkovic, M., Nikolic, K.
ID
ZDB-PUB-221224-34
Date
2022
Source
Pharmaceutics   14(12): (Journal)
Registered Authors
Keywords
1-benzhydryl piperazine, anti-metastatic effect, breast cancer, drug discovery, histone deacetylases, hydroxamic acid, zebrafish xenograft model
MeSH Terms
none
PubMed
36559094 Full text @ Pharmaceutics
Abstract
Isoform-selective histone deacetylase (HDAC) inhibition is promoted as a rational strategy to develop safer anti-cancer drugs compared to non-selective HDAC inhibitors. Despite this presumed benefit, considerably more non-selective HDAC inhibitors have undergone clinical trials. In this report, we detail the design and discovery of potent HDAC inhibitors, with 1-benzhydryl piperazine as a surface recognition group, that differ in hydrocarbon linker. In vitro HDAC screening identified two selective HDAC6 inhibitors with nanomolar IC50 values, as well as two non-selective nanomolar HDAC inhibitors. Structure-based molecular modeling was employed to study the influence of linker chemistry of synthesized inhibitors on HDAC6 potency. The breast cancer cell lines (MDA-MB-231 and MCF-7) were used to evaluate compound-mediated in vitro anti-cancer, anti-migratory, and anti-invasive activities. Experiments on the zebrafish MDA-MB-231 xenograft model revealed that a novel non-selective HDAC inhibitor with a seven-carbon-atom linker exhibits potent anti-tumor, anti-metastatic, and anti-angiogenic effects when tested at low micromolar concentrations.
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