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A Structure—Activity Relationship Study of Bis-Benzamides as Inhibitors of Androgen Receptor—Coactivator Interaction
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A Structure—Activity Relationship Study of Bis-Benzamides as Inhibitors of Androgen Receptor—Coactivator Interaction
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Journal Article
A Structure—Activity Relationship Study of Bis-Benzamides as Inhibitors of Androgen Receptor—Coactivator Interaction
2019
Overview
The interaction between androgen receptor (AR) and coactivator proteins plays a critical role in AR-mediated prostate cancer (PCa) cell growth, thus its inhibition is emerging as a promising strategy for PCa treatment. To develop potent inhibitors of the AR–coactivator interaction, we have designed and synthesized a series of bis-benzamides by modifying functional groups at the N/C-terminus and side chains. A structure–activity relationship study showed that the nitro group at the N-terminus of the bis-benzamide is essential for its biological activity while the C-terminus can have either a methyl ester or a primary carboxamide. Surveying the side chains with various alkyl groups led to the identification of a potent compound 14d that exhibited antiproliferative activity (IC50 value of 16 nM) on PCa cells. In addition, biochemical studies showed that 14d exerts its anticancer activity by inhibiting the AR–PELP1 interaction and AR transactivation.
Publisher
MDPI AG,MDPI
Subject
Androgen Antagonists - chemistry
/ Androgen Antagonists - pharmacology
/ Cell Proliferation - drug effects
/ Chloride
/ Co-Repressor Proteins - chemistry
/ Co-Repressor Proteins - genetics
/ Gene Expression Regulation, Neoplastic
/ Humans
/ Male
/ Peptides
/ Prostate-Specific Antigen - genetics
/ Prostatic Neoplasms - drug therapy
/ Prostatic Neoplasms - genetics
/ Prostatic Neoplasms - pathology
/ Protein Conformation, alpha-Helical - drug effects
/ Protein Interaction Maps - drug effects
/ Receptors, Androgen - chemistry
/ Receptors, Androgen - drug effects
/ Structure-Activity Relationship
/ Transcription Factors - chemistry
/ Transcription Factors - genetics
