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Binding strength between cell adhesion proteoglycans measured by atomic force microscopy
Science (New York, N.Y.)
|February 24, 1995
Summary
Adhesion molecules in marine sponges exhibit strong binding forces, up to 400 piconewtons between individual molecules. This molecular adhesion is crucial for maintaining the structural integrity of these multicellular organisms.
Area of Science:
- Biophysics
- Marine Biology
- Biochemistry
Background:
- Maintaining anatomical integrity in multicellular organisms relies on adhesion molecules.
- Understanding the forces mediated by these molecules is essential.
Purpose of the Study:
- To measure the binding strength of cell adhesion proteoglycans from a marine sponge.
- To assess the contribution of molecular adhesion to organismal integrity.
Main Methods:
- Utilized Atomic Force Microscopy (AFM) to quantify binding forces.
- Conducted measurements under physiological conditions.
Main Results:
- Measured adhesive forces between two cell adhesion molecules up to 400 piconewtons.
- A single molecular pair could support the weight of approximately 1600 cells.
Conclusions:
- High intermolecular binding forces are fundamental to the structural integrity of multicellular marine sponges.
- Adhesion molecules play a critical role in maintaining organismal form and function.