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Updated: Jul 13, 2026

Preparation and In Vivo Use of an Activity-based Probe for N-acylethanolamine Acid Amidase
Published on: November 23, 2016
Novel antagonists of the thioesterase domain of human fatty acid synthase
Robyn D Richardson1, Jeffrey W Smith
1Cancer Research Center and Center on Proteolytic Pathways, Burnham Institute for Medical Research, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA.
Abstract:
Fatty acid synthase (FAS) is up-regulated in a wide range of cancers and has been recently identified as a potential therapeutic target. Indeed, previous research has shown that inhibition of FAS with active site-modifying agents can block tumor cell proliferation, elicit tumor cell death, and prevent tumor growth in animal models. Here, we use a high-throughput fluorogenic screen and identify a novel pharmacophore, 5-(furan-2-ylmethylene) pyrimidine-2,4,6-trione, which inhibits the thioesterase domain of FAS. The novel antagonists are competitive inhibitors of the thioesterase domain, inhibit de novo fatty acid synthesis, and elicit FAS-dependent tumor cell death. This set of novel FAS antagonists provides an important pharmacologic lead for further development of anticancer therapeutics.
Insights
Novel compounds targeting fatty acid synthase (FAS) show promise as anticancer therapeutics. These inhibitors block fatty acid synthesis, leading to cancer cell death and reduced tumor growth.
Area of Science:
- Biochemistry
- Medicinal Chemistry
- Oncology
Background:
- Fatty acid synthase (FAS) is frequently overexpressed in various cancers.
- FAS is a validated therapeutic target for cancer treatment.
- Inhibiting FAS can impede tumor cell proliferation, induce apoptosis, and suppress tumor growth.
Purpose of the Study:
- To identify novel pharmacophores targeting the thioesterase domain of FAS.
- To develop new anticancer agents by inhibiting FAS.
Main Methods:
- High-throughput fluorogenic screening was employed.
- Identification and characterization of novel FAS inhibitors.
Main Results:
- A novel pharmacophore, 5-(furan-2-ylmethylene) pyrimidine-2,4,6-trione, was identified.
- These compounds act as competitive inhibitors of the FAS thioesterase domain.
- Inhibition of de novo fatty acid synthesis and induction of FAS-dependent cancer cell death were observed.
Conclusions:
- The identified FAS antagonists represent a promising pharmacologic lead for anticancer drug development.
- Targeting the thioesterase domain of FAS offers a viable strategy for cancer therapy.
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