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New perspectives in cell adhesion: RGD and integrins
E Ruoslahti1, M D Pierschbacher
1La Jolla Cancer Research Foundation, CA 92037.
Science (New York, N.Y.)
|October 23, 1987
Summary
Cell adhesion involves molecular interactions where proteins with arginine-glycine-aspartic acid (RGD) sequences bind to integrin receptors. This interaction is crucial for cell anchorage, migration, and signaling.
Area of Science:
- Molecular biology
- Cell biology
- Biochemistry
Background:
- Cell adhesion is fundamental to multicellular organisms.
- Extracellular matrix and blood proteins often contain arginine-glycine-aspartic acid (RGD) sequences for cell recognition.
- Integrins are cell surface receptors that bind to these RGD sequences.
Purpose of the Study:
- To elucidate the molecular mechanisms of cell adhesion.
- To describe the role of RGD sequences and integrins in cell recognition and adhesion.
- To highlight the functional significance of the RGD-integrin system in cellular processes.
Main Methods:
- Review of existing literature on cell adhesion molecules.
- Analysis of the structure and function of RGD-containing proteins.
- Examination of the integrin family of receptors and their binding specificities.
Main Results:
- Identified over ten RGD-containing adhesion proteins and at least as many integrin receptors.
- Demonstrated that integrins recognize RGD sequences on various adhesive proteins.
- Highlighted the critical role of RGD sequence conformation in recognition specificity.
- Established the connection between extracellular matrix and intracellular cytoskeleton via integrins.
Conclusions:
- The RGD-integrin system is a versatile recognition mechanism essential for cell adhesion.
- This system provides cells with anchorage, aids in migration, and transmits signals for differentiation and growth.
- Further research into this system can reveal insights into various physiological and pathological processes.
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