Regulation of Signaling from the Epidermal Growth Factor Family
Antony W Burgess1,2,3
1Honorary Laboratory Head, Personalized Oncology Division, WEHI, Parkville3050, Australia.
Abstract:
The epidermal growth factor (EGF) system has allowed chemists, biologists, and clinicians to improve our understanding of cell production and cancer therapy. The discovery of EGF led to the recognition of cell surface receptors capable of controlling the proliferation and survival of cells. The detailed structures of the EGF-like ligand and the responses of their receptors (EGFR-family) has revealed the conformational and aggregation changes whereby ligands activate the intracellular kinase domains. Biophysical analysis has revealed the preformed clustering of different EGFR-family members and the processes which occur on ligand binding. Understanding these receptor activation processes and the consequential cytoplasmic signaling has allowed the development of inhibitors which are revolutionizing cancer therapy. This Review describes the recent progress in our understanding of the activation of the EGFR-family, the effects of signaling from the EGFR-family on cell proliferation, and the targeting of the EGFR-family in cancer treatment.
Insights
The epidermal growth factor (EGF) system and its receptors (EGFR-family) are key to cell growth and cancer. Understanding their activation and signaling pathways has led to revolutionary cancer therapies.
Area of Science:
- Biochemistry
- Cell Biology
- Oncology
Background:
- The epidermal growth factor (EGF) system is crucial for understanding cell proliferation and cancer.
- EGF discovery revealed cell surface receptors controlling cell survival and proliferation.
Purpose of the Study:
- To review recent advancements in understanding EGFR-family activation.
- To discuss the impact of EGFR-family signaling on cell proliferation.
- To explore the targeting of the EGFR-family in cancer treatment.
Main Methods:
- Detailed structural analysis of EGF-like ligands and their receptors (EGFR-family).
- Biophysical analysis of receptor clustering and ligand-induced activation.
- Examination of consequential cytoplasmic signaling pathways.
Main Results:
- Ligand binding induces conformational and aggregation changes in EGFR-family receptors.
- Preformed clustering of EGFR-family members is observed.
- Understanding activation processes enables targeted cancer therapy development.
Conclusions:
- Recent progress enhances our understanding of EGFR-family activation mechanisms.
- EGFR-family signaling significantly impacts cell proliferation.
- Targeting the EGFR-family offers promising avenues for cancer therapy.
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