Related Experiment Video
Updated: Jul 15, 2026

An In Vitro Dormancy Model of Estrogen-sensitive Breast Cancer in the Bone Marrow: A Tool for Molecular Mechanism Studies and Hypothesis Generation
Published on: June 30, 2015
Growth factor signalling in endocrine and anti-growth factor resistant breast cancer
R I Nicholson1, I R Hutcheson, H E Jones
1Tenovus Centre for Cancer Research, Welsh School of Pharmacy, Cardiff University, Cardiff, UK. NicholsonRI@cardiff.ac.uk
Abstract:
Growth factors provide powerful mitogenic and survival signals to breast cancer cells and it is therefore not surprising that they are able to subvert inhibitory responses to anti-hormonal drugs. In this review we discuss several mechanisms by which this may be achieved and expand our observations to encompass recently emerging anti-growth factor treatments. The information presented is underpinned by inhibitor studies that show the targeting of such mechanisms in advance of anti-hormone or anti-growth factor resistance development is able to substantially delay this event, thus pointing the way forward to intelligent combination therapies relevant to the future management of breast cancer.
Insights
Growth factors help breast cancer cells survive and resist anti-hormonal drugs. Targeting these growth factors may delay drug resistance and improve breast cancer treatment through combination therapies.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Growth factors promote breast cancer cell proliferation and survival.
- Breast cancer cells can develop resistance to anti-hormonal therapies by utilizing growth factor signaling pathways.
- Understanding these resistance mechanisms is crucial for effective breast cancer treatment.
Purpose of the Study:
- To review mechanisms by which growth factors enable breast cancer cells to subvert anti-hormonal drug responses.
- To discuss emerging anti-growth factor treatments in the context of overcoming drug resistance.
- To highlight the potential of combination therapies for breast cancer management.
Main Methods:
- Review of existing literature on growth factor signaling in breast cancer.
- Analysis of inhibitor studies demonstrating the impact of targeting specific pathways.
- Synthesis of information on current and emerging anti-growth factor therapies.
Main Results:
- Growth factors activate pathways that confer resistance to anti-hormonal drugs.
- Targeting growth factor mechanisms can delay the development of resistance.
- Emerging anti-growth factor treatments offer new strategies to combat resistance.
Conclusions:
- Growth factor signaling is a key mechanism of resistance in breast cancer therapy.
- Proactive targeting of these pathways can enhance the efficacy of anti-hormonal drugs.
- Intelligent combination therapies hold significant promise for future breast cancer management.
Related Concept Videos
Mitogens and the Cell Cycle
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
TGF - β Signaling Pathway
Targeted Cancer Therapies
There are several types of targeted therapies against specific...
Autocrine Signaling
Autocrine Signaling in Macrophages
Under normal physiological conditions, autocrine signaling is essential for maintaining homeostasis. This process is well characterized in...
Autocrine Signaling
Autocrine Signaling in Macrophages
Under normal physiological conditions, autocrine signaling is essential for maintaining homeostasis. This process is well characterized in...

