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The ErbB receptors and their role in cancer progression
Thomas Holbro1, Gianluca Civenni, Nancy E Hynes
1Friedrich Miescher Institute, PO Box 2543, 4002, Basel, Switzerland.
Abstract:
The involvement of the ErbB receptor tyrosine kinases in human cancer, as well as their essential role in a variety of physiological events during normal development, have motivated the interest in this receptor family. Approaches taken to block the activity of ErbB receptors in cancer cells have not only proven that they drive in vitro tumor cell proliferation, but have also become clinically relevant for targeting tumors with deregulated ErbB signaling. The mechanisms and downstream effectors through which the ErbB receptors influence processes linked to malignant development, including proliferation, cell survival, angiogenesis, migration, and invasion, are, however, only now becoming apparent. Our particular emphasis in this review will be on how ErbB receptors, in particular ErbB1 and ErbB2, contribute to processes linked to cancer progression. Importantly, in keeping with the emerging theme that ErbB receptors do not function in isolation, we will focus on receptor cooperativity, i.e., ErbB1 cooperates with other classes of receptors, and the ligand-less ErbB2 functions as a heterodimer with other ErbBs.
Insights
ErbB receptor tyrosine kinases are crucial in cancer and development. This review highlights how ErbB1 and ErbB2 drive cancer progression through receptor cooperativity and heterodimerization.
Area of Science:
- Oncology
- Molecular Biology
- Cell Signaling
Background:
- ErbB receptor tyrosine kinases are vital in human cancer and normal development.
- Targeting ErbB receptors is a clinically relevant strategy for treating cancers with deregulated signaling.
- Understanding ErbB-mediated pathways is key to developing effective cancer therapies.
Purpose of the Study:
- To review the role of ErbB receptors, specifically ErbB1 and ErbB2, in cancer progression.
- To elucidate the mechanisms and downstream effectors by which ErbB receptors influence malignant development.
- To emphasize the importance of receptor cooperativity in ErbB signaling.
Main Methods:
- Literature review focusing on ErbB receptor function in cancer.
- Analysis of studies investigating ErbB1 and ErbB2 roles in tumor cell proliferation, survival, angiogenesis, migration, and invasion.
- Examination of research on ErbB receptor cooperativity and heterodimerization.
Main Results:
- ErbB receptors drive in vitro tumor cell proliferation and are clinically relevant targets.
- Mechanisms of ErbB receptor involvement in proliferation, cell survival, angiogenesis, migration, and invasion are increasingly understood.
- ErbB1 cooperates with other receptor classes, and ligand-less ErbB2 functions as a heterodimer with other ErbBs.
Conclusions:
- ErbB receptors, particularly ErbB1 and ErbB2, significantly contribute to cancer progression.
- Receptor cooperativity and heterodimerization are critical aspects of ErbB signaling in cancer.
- Further research into ErbB pathways will yield novel therapeutic strategies for cancer treatment.