Valeria Consoli, Antonino N. Fallica, Nicola F. Virzì, Loredana Salerno, Sebastiano Intagliata, Valeria Sorrenti, Khaled Greish, Alessandro Giuffrida, Luca Vanella and Valeria Pittalà*,
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Synthesis and in Vitro Evaluation of CAPE Derivatives as Ferroptosis Inducers in Triple Negative Breast Cancer
Herein, we describe the design, synthesis, and in vitro biological evaluation of HO-1 inducers endowed with cytotoxic effects mediated by ferroptosis activation. Using the natural HO-1 inducer caffeic acid phenethyl ester (CAPE) as a chemical scaffold, new derivatives were synthesized by performing modifications in the cathecol moiety and in the phenethyl ester aromatic ring. Biological assays aimed at evaluating an imbalanced activity of ferroptosis key players identified that 2-(1H-indol-3-yl)ethyl cinnamate (compound 24) possesses improved anticancer activity toward the MDA-MB 231 triple negative breast cancer cell line when compared to CAPE. Increased ROS and LOOH levels, reduced GSH levels, imbalanced mitochondrial activity, and restored cell viability after ferrostatin-1 treatment suggested a ferroptotic mechanism of action, which did not involve GPX4 inhibition. Compound 24 represents an intriguing hit compound useful for the identification of novel ferroptosis inducers.
期刊介绍:
ACS Medicinal Chemistry Letters is interested in receiving manuscripts that discuss various aspects of medicinal chemistry. The journal will publish studies that pertain to a broad range of subject matter, including compound design and optimization, biological evaluation, drug delivery, imaging agents, and pharmacology of both small and large bioactive molecules. Specific areas include but are not limited to:
Identification, synthesis, and optimization of lead biologically active molecules and drugs (small molecules and biologics)
Biological characterization of new molecular entities in the context of drug discovery
Computational, cheminformatics, and structural studies for the identification or SAR analysis of bioactive molecules, ligands and their targets, etc.
Novel and improved methodologies, including radiation biochemistry, with broad application to medicinal chemistry
Discovery technologies for biologically active molecules from both synthetic and natural (plant and other) sources
Pharmacokinetic/pharmacodynamic studies that address mechanisms underlying drug disposition and response
Pharmacogenetic and pharmacogenomic studies used to enhance drug design and the translation of medicinal chemistry into the clinic
Mechanistic drug metabolism and regulation of metabolic enzyme gene expression
Chemistry patents relevant to the medicinal chemistry field.