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Updated: Jul 5, 2026

Profiling of Estrogen-regulated MicroRNAs in Breast Cancer Cells
Published on: February 21, 2014
Estrogen and MYB in breast cancer: potential for new therapies
Thomas J Gonda1, Paul Leo, Robert G Ramsay
1Professorial Research Fellow, Deputy Director and Head Cancer Biology Program, University of Queensland Diamantina Institute for Cancer, Immunology and Metabolic Medicine, Princess Alexandra Hospital, Woolloongabba, Queensland, Australia. t.gonda@uq.edu.au
Abstract:
MYB is highly expressed in almost all estrogen receptor (ER)-positive breast tumours and is a direct target of estrogen/ER signalling. Our recent studies have shown that MYB is also required for the proliferation of ER-positive breast tumour cell lines, and have shed further light on the mechanism of ER regulation of MYB expression. Here we discuss the rationale for therapeutic targeting of MYB in breast cancer and consider a number of approaches to developing an anti-MYB therapeutic.
Insights
MYB is highly expressed in estrogen receptor-positive breast tumors and drives their proliferation. Targeting MYB offers a promising therapeutic strategy for breast cancer treatment.
Area of Science:
- Oncology
- Molecular Biology
- Endocrinology
Background:
- MYB is highly expressed in estrogen receptor (ER)-positive breast tumors.
- MYB is a direct target of estrogen/ER signaling.
- MYB is crucial for the proliferation of ER-positive breast cancer cell lines.
Purpose of the Study:
- To discuss the rationale for targeting MYB therapeutically in breast cancer.
- To explore potential anti-MYB therapeutic approaches.
Main Methods:
- Review of recent studies on MYB expression and regulation in breast cancer.
- Analysis of the mechanism of ER regulation of MYB.
- Consideration of therapeutic strategies targeting MYB.
Main Results:
- MYB expression is tightly regulated by estrogen/ER signaling in breast cancer.
- MYB plays a critical role in the proliferation of ER-positive breast tumors.
- Targeting MYB presents a viable therapeutic avenue.
Conclusions:
- MYB is a key driver of ER-positive breast cancer proliferation.
- Developing anti-MYB therapeutics is a rational approach for breast cancer treatment.
- Further research into MYB-targeted therapies is warranted.
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