Line Tension and Stability of Cell Adhesion Domains
Author Information
Author(s): Krobath Heinrich, Różycki Bartosz, Lipowsky Reinhard, Weikl Thomas R.
Primary Institution: Max Planck Institute of Colloids and Interfaces, Department of Theory and Bio-Systems, Potsdam, Germany
Hypothesis
The length mismatch between receptor-ligand complexes is sufficient to drive the formation of microdomains in immune-cell adhesion zones.
Conclusion
The study shows that stable submicron-scale domains of TCR-MHCpeptide complexes can form due to their length mismatch with integrin complexes.
Supporting Evidence
- The study provides general expressions for line tension and adhesion free energy based on receptor-ligand complex lengths.
- Monte Carlo simulations were used to estimate critical sizes for stable domains.
- The findings suggest that the cytoskeleton's role may be limited to transporting microdomains rather than forming them.
Takeaway
Cells can form tiny clusters of proteins on their surfaces, which help them communicate. These clusters can form just because some proteins are longer than others.
Methodology
The study used analytical calculations and Monte Carlo simulations to derive expressions for line tension and adhesion free energy.
Digital Object Identifier (DOI)
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