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Ligand-induced dimerization of growth factor receptors: variations on the theme
1Ludwig Institute for Cancer Research, Biomedical Center, Uppsala, Sweden.
Abstract:
Growth, differentiation, apoptosis and movement of cells are regulated, in part, by polypeptide growth factors, or cytokines, which exert their effects by binding to cell surface receptors on the target cells. Recent observations have indicated that a common mechanism of activation of several classes of such receptors is ligand-induced dimerization or oligomerization of the receptors.
Insights
Cellular processes like growth and movement are controlled by cytokines. These signaling proteins activate cell surface receptors through a process called ligand-induced dimerization or oligomerization.
Area of Science:
- Cell biology
- Molecular signaling
Background:
- Cellular functions including growth, differentiation, apoptosis, and movement are regulated by polypeptide growth factors (cytokines).
- Cytokines mediate their effects by binding to specific cell surface receptors on target cells.
Purpose of the Study:
- To elucidate the common mechanism of activation for various classes of cell surface receptors.
Main Methods:
- Review of recent observations and existing literature on receptor activation mechanisms.
Main Results:
- A common mechanism for activating several classes of cell surface receptors has been identified.
- Ligand-induced dimerization or oligomerization of receptors is a key activation step.
Conclusions:
- Ligand-induced receptor dimerization/oligomerization is a fundamental mechanism in cytokine signaling.
- This mechanism plays a crucial role in regulating diverse cellular responses.