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Published on: September 19, 2018
Receptor tyrosine kinases in breast cancer treatment: unraveling the potential
Yu Qi1, Shu-Min Deng1, Kuan-Song Wang1,2
1Department of Pathology, School of Basic Medical Sciences, Central South University Changsha, Hunan, China.
Abstract:
Breast cancer is a multifactorial disease driven by acquired genetic and epigenetic changes that lead to aberrant regulation of cellular signaling pathways. Receptor tyrosine kinases (RTKs), a class of critical receptors, are involved in the initiation and progression of breast cancer. RTKs are cell surface receptors with unique structures and biological characteristics, which respond to environmental signals by initiating signaling cascades such as the mitogen-activated protein kinase (MAPK) pathway, Janus kinase (JAK)/signal transducer, activator of transcription (STAT) pathway, and phosphoinositide 3-kinase (PI3K)/AKT pathway. The critical role of RTKs makes them suitable targets for breast cancer treatment. Targeted therapies against RTKs have been developed in recent years, evaluated in clinical trials, and approved for several cancer types, including breast cancer. However, breast cancer displays molecular heterogeneity and exhibits different therapeutic responses to various drug types, leading to limited effectiveness of targeted therapy against RTKs. In this review, we summarize the structural and functional characteristics of selected RTKs and discuss the mechanisms and current status of drug therapy involving different protein tyrosine kinases in breast cancer progression.
Insights
Receptor tyrosine kinases (RTKs) drive breast cancer, but molecular heterogeneity limits targeted therapy effectiveness. This review details RTK functions and current drug therapies for breast cancer progression.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Breast cancer involves genetic/epigenetic changes affecting cellular signaling.
- Receptor tyrosine kinases (RTKs) are crucial in breast cancer initiation and progression.
- RTKs activate key signaling pathways like MAPK, JAK/STAT, and PI3K/AKT.
Purpose of the Study:
- To review the structural and functional characteristics of selected RTKs.
- To discuss the mechanisms and current status of drug therapy targeting protein tyrosine kinases in breast cancer.
Main Methods:
- Literature review of RTKs in breast cancer.
- Analysis of signaling pathways regulated by RTKs.
- Summary of targeted therapies and their effectiveness.
Main Results:
- RTKs play a critical role in breast cancer pathogenesis.
- Targeted therapies against RTKs are approved but face challenges.
- Molecular heterogeneity of breast cancer impacts therapeutic response.
Conclusions:
- Understanding RTK structure-function is key for breast cancer treatment.
- Current targeted therapies show limited effectiveness due to tumor heterogeneity.
- Further research into RTK mechanisms and novel therapeutic strategies is warranted.
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