Molecular Mechanics of Cell Adhesion Interactions

Cell adhesion is governed by a network of molecular interactions that translate mechanical forces into biochemical signals, enabling processes such as immune surveillance, tissue morphogenesis and thrombosis. At the core of this machinery are specialized receptors—most notably integrins and selectins—whose binding kinetics and conformational states are modulated by external forces. Under tension, certain bonds exhibit counter-intuitive behaviour, strengthening as force increases (catch bonds) before weakening at higher loads (slip bonds). This force-dependent modulation of bond lifetimes underpins phenomena from leukocyte rolling on vascular endothelium to platelet aggregation under high shear. Recent advances in single-molecule force spectroscopy, microfluidics and synthetic biology have begun to unravel how ligand presentation, bond orientation and receptor clustering influence cellular mechanosensing and adhesion strengthening. Computational models now complement experimental assays to predict adhesion dynamics in complex flow and tissue environments, opening new avenues for targeted therapies and biomaterial design.

Research from Nature Portfolio

Recent studies have introduced a multi-dimensional thrombus profiling assay that recreates high-shear environments to reveal how distinct receptor–ligand interactions contribute to thrombus composition and activation, uncovering a hyperactive GPIbα–integrin αIIbβ3 axis in hypertension-associated arterial thrombosis. Parallel efforts in synthetic chemistry have produced de novo DNA-based catch bonds by embedding force-gated cryptic domains within DNA duplexes, successfully recreating force-enhanced rolling adhesion characteristic of leukocyte and bacterial interactions. A complementary materials-science approach has demonstrated that looped and linear polymeric tethers linking nanoparticles can be tuned to open sequentially under tension, reproducing catch-bond force–lifetime profiles and suggesting routes to self-strengthening, mechanoadaptive materials.

Molecular Mechanics of Cell Adhesion Interactions publication trend

The graph below shows the total number of articles in molecular mechanics of cell adhesion interactions across all publications each year (not limited to Nature Index journals).

Technical terms

Catch bond: A non-covalent interaction that becomes stronger (longer lifetime) under moderate applied force before weakening at higher forces.

Slip bond: A bond whose lifetime decreases monotonically with increasing force.

Integrin: A transmembrane receptor that mediates cell–matrix and cell–cell adhesion, undergoing conformational changes in response to mechanical cues.

Selectin: A family of cell-surface lectins that bind carbohydrate ligands to mediate fast rolling adhesion of leukocytes under flow.

Shear stress: The tangential force per unit area exerted by fluid flow on a cell surface, influencing bond formation and dissociation rates.

Mechanotransduction: The process by which cells convert mechanical stimuli into biochemical signals that regulate adhesion, migration and gene expression.

References

1. Biomembrane force probe (BFP): Design, advancements, and recent applications to live‐cell mechanobiology. Exploration (2023).
2. Multi-parametric thrombus profiling microfluidics detects intensified biomechanical thrombogenesis associated with hypertension and aging. Nature Communications (2024).
3. De novo DNA-based catch bonds. Nature Chemistry (2024).
4. A catch bond mechanism with looped adhesive tethers for self-strengthening materials. Communications Materials (2023).
5. Receptor–Ligand Binding: Effect of Mechanical Factors. International Journal of Molecular Sciences (2023).