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Updated: Jun 30, 2026

Studying TGF-β Signaling and TGF-β-induced Epithelial-to-mesenchymal Transition in Breast Cancer and Normal Cells
Published on: October 27, 2020
The YAP-TEAD4 inhibitor M511-0965 suppresses triple-negative breast cancer progression by downregulating TGFB2
Mengxing Cheng1, Xinyu Li1, Na Song1
1Department of Pharmacology (State Key Laboratory of Frigid Zone Cardiovascular Diseases, State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin 150086, China.
Abstract:
Triple-negative breast cancer (TNBC) lacks standard targeted therapies, and chemotherapy is associated with significant side effects and economic burden, highlighting the urgent need to develop novel low-toxicity and low-cost strategies. The Hippo pathway serves as a critical regulator of organ development. Its activation phosphorylates Yes-associated protein (YAP) and transcriptional coactivator TAZ, promoting their cytoplasmic degradation and inhibiting their binding to the nuclear transcription factor TEAD, thereby suppressing downstream gene expression. As the terminal effector of this pathway, TEAD plays an important role in various tumors. In this study, bioinformatics and molecular biology experiments revealed that TEAD4 is highly expressed in TNBC, and its expression level influences the biological functions of TNBC. Thus, TEAD4 represents an important therapeutic target for tumors, underscoring the need to identify safe and low-toxicity TEAD4 small-molecule inhibitors. Structure-based virtual screening has become a key step in drug discovery. Focusing on the crystal structure of the YAP/TEAD4 complex, we employed molecular docking technology for screening and identified a novel small-molecule inhibitor. Molecular biology and cellular functional assays confirmed that this inhibitor acts by targeting the YAP/TEAD4 interaction, thereby exerting antitumor effects. This preclinical study provides new insights and experimental evidence for targeted therapy in TNBC.
Insights
Researchers identified a novel small-molecule inhibitor targeting TEAD4 to treat triple-negative breast cancer (TNBC). This YAP/TEAD4 inhibitor offers a promising, low-toxicity therapeutic strategy for TNBC, addressing unmet clinical needs.
Area of Science:
- Oncology
- Molecular Biology
- Drug Discovery
Background:
- Triple-negative breast cancer (TNBC) lacks targeted therapies, necessitating novel, low-toxicity treatments.
- The Hippo pathway regulates organ development; its effector TEAD is implicated in various cancers.
- TEAD4 is highly expressed in TNBC, influencing its biological functions and presenting a therapeutic target.
Purpose of the Study:
- To identify safe and low-toxicity small-molecule inhibitors targeting TEAD4 for TNBC treatment.
- To investigate the role of TEAD4 in TNBC progression and its potential as a therapeutic target.
Main Methods:
- Bioinformatics and molecular biology experiments to analyze TEAD4 expression in TNBC.
- Structure-based virtual screening using molecular docking to identify inhibitors of the YAP/TEAD4 complex.
- In vitro molecular biology and cellular functional assays to validate inhibitor efficacy.
Main Results:
- TEAD4 was found to be highly expressed in TNBC, correlating with tumor biological functions.
- A novel small-molecule inhibitor targeting the YAP/TEAD4 interaction was identified through virtual screening.
- The inhibitor demonstrated antitumor effects by disrupting the YAP/TEAD4 interaction in cellular assays.
Conclusions:
- TEAD4 is a crucial therapeutic target in triple-negative breast cancer.
- The identified small-molecule inhibitor targeting YAP/TEAD4 interaction shows preclinical promise for TNBC therapy.
- This study provides a foundation for developing novel, low-toxicity targeted therapies for TNBC.
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