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Updated: Oct 13, 2025

Systems Biology of Metabolic Regulation by Estrogen Receptor Signaling in Breast Cancer
Published on: March 17, 2016
Overview of PROTACs Targeting the Estrogen Receptor: Achievements for Biological and Drug Discovery
Hui Qin1, Yiwen Zhang1,2, Yutao Lou3
1Clinical Pharmacy Center, Department of Pharmacy, Zhejiang Provincial People\'s Hospital, Affiliated People\'s Hospital, Hangzhou Medical College, Hangzhou, Zhejiang, 310014, China.
Abstract:
Estrogen receptors (ERs) are steroid hormone receptors, which belong to a large nuclear receptor family. Endocrine diseases correlate strongly with dysregulated ER signaling. Traditional therapies continue to rely on small molecule inhibitors, including aromatase inhibitors (AIs) and selective estrogen receptor modulators (SERMs), all of which permit acquired resistance to endocrine therapy. Proteolytic targeting chimeras (PROTACs) offer unprecedented potential for solving acquired endocrine resistance. ARV-471, an ER-targeting PROTAC developed by Arvinas, was designated as an Investigational New Drug by the US FDA in 2019, and a phase I trial in patients suffering from locally advanced or metastatic ER-positive/HER2- negative breast cancer was initiated. In this review, we will focus on progress in developing ER-targeting PROTACs from publications and patents aimed at the treatment of endocrine diseases.
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