Holding it together: when cadherin meets cadherin

Understanding how cells stick together remains a central challenge in biology. While adhesion is essential for tissue organization, its mechanisms are still debated across disciplines. Researchers have explored adhesion at multiple scales, from molecular interactions to tissue-level dynamics. At the molecular level, adhesion receptors like cadherins influence binding strength. At the cellular level, adhesion is often measured by resistance to detachment or surface tension changes. Tissue-level adhesion governs cellular rearrangements during development. Despite extensive study, a unified definition of cell-cell adhesion has not emerged. This gap motivates a synthesis of recent findings across experimental and theoretical approaches. No prior work has fully reconciled molecular, cellular, and tissue-scale perspectives on adhesion.

This review aims to integrate recent findings on cell-cell adhesion across multiple scales. The authors focus on cadherin-mediated adhesion and its signaling pathways. They seek to clarify how adhesion is regulated at the molecular and cellular levels. The study also examines mechanosensation in adhesion processes. The goal is to bridge gaps between biologists and physicists studying adhesion. The authors highlight the role of adhesion in morphogenesis and tissue organization. They aim to provide a framework for understanding adhesion in both healthy and pathological contexts. This work addresses the need for a unified perspective on adhesion mechanisms.

The authors synthesize findings from biomimetic models and in vivo studies. They analyze molecular-level interactions involving cadherins and their binding partners. Cellular-level data includes measurements of adhesion strength and surface tension. Tissue-level observations focus on cellular rearrangements during development. Theoretical models are used to simulate adhesion dynamics. The review integrates data from biophysical and biochemical experiments. Comparisons are drawn between in vitro and in vivo adhesion behaviors. The authors emphasize the role of signaling pathways in adhesion regulation.

The strongest finding is the central role of cadherins in cell-cell adhesion. The review highlights how cadherin binding affinity is modulated by signaling pathways. Adhesion strength is influenced by both ligand-receptor interactions and cytoskeletal forces. The authors report that mechanosensation is key to adhesion regulation. They note that adhesion signaling affects tissue morphogenesis and stability. Theoretical models suggest that adhesion is a dynamic, context-dependent process. The review identifies gaps in understanding how adhesion is coordinated across scales. It proposes that adhesion is best understood as a balance between molecular and mechanical forces.

The authors conclude that cell-cell adhesion is best understood as a multiscale process. They emphasize that cadherin-mediated adhesion involves both molecular and mechanical components. The review suggests that adhesion signaling and mechanosensation are interdependent. The authors propose that adhesion is regulated through feedback loops involving cytoskeletal forces. They suggest that adhesion is not static but dynamically adjusted in response to environmental cues. The review highlights the need for further integration of biophysical and biochemical data. The authors argue that a unified framework is essential for advancing the field. They conclude that adhesion is central to both normal development and disease progression.