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Updated: Sep 26, 2026

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Published on: July 24, 2026
ErbBs in mammary development
1Department of Pathology, Yale University School of Medicine, CT, New Haven 06520, USA. DF.Stern@yale.edu
Abstract:
Members of the ErbB (epidermal growth factor receptor) family of receptor tyrosine kinases are important in etiology of human mammary carcinoma, and are rational targets for cancer therapy. The frequent selection of ErbB2/HER2/Neu, and, less often, the epidermal growth factor receptor, and ErbB3 for overexpression in breast cancer implies that these receptors have important functions in normal mammary development. Better understanding of ErbBs in mammary development may yield important dividends for development and deployment of cancer therapies. The roles of these receptors and their ligands in mammary development are discussed, with an emphasis on new insights from genetic analysis of the receptors in mice.
Insights
Understanding ErbB receptors in mammary development is key for breast cancer therapy. Genetic analysis in mice reveals crucial roles for these growth factor receptors in normal mammary gland function.
Area of Science:
- Oncology
- Developmental Biology
- Molecular Biology
Background:
- ErbB receptor tyrosine kinases are implicated in human breast cancer.
- Overexpression of ErbB2/HER2/Neu, EGFR, and ErbB3 suggests roles in normal mammary development.
- Targeting ErbB receptors is a strategy in cancer therapy.
Purpose of the Study:
- To discuss the roles of ErbB receptors and their ligands in mammary development.
- To highlight new insights from genetic analysis of ErbB receptors in mice.
- To inform the development of targeted cancer therapies.
Main Methods:
- Review of existing literature on ErbB receptors in mammary development.
- Emphasis on genetic analysis of ErbB receptors in mouse models.
- Discussion of receptor-ligand interactions.
Main Results:
- ErbB receptors play significant roles in normal mammary gland development.
- Genetic studies in mice provide critical insights into these roles.
- Understanding normal function can guide therapeutic strategies.
Conclusions:
- ErbB family members are essential for mammary gland development.
- Insights from mouse models are valuable for human breast cancer research.
- Further understanding of ErbB function can improve cancer treatment strategies.
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