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Comments on Beta C et al. (2023) Elife "From actin waves to mechanism and back: How theory aids biological understanding." (0)
Overview
Beta C, Edelstein-Keshet L, Gov N, & Yochelis A (2023). From actin waves to mechanism and back: How theory aids biological understanding. Elife, 12. doi:10.7554/eLife.87181
Actin dynamics in cell motility, division, and phagocytosis is regulated by complex factors with multiple feedback loops, often leading to emergent dynamic patterns in the form of propagating waves of actin polymerization activity that are poorly understood. Many in the actin wave community have attempted to discern the underlying mechanisms using experiments and/or mathematical models and theory. Here, we survey methods and hypotheses for actin waves based on signaling networks, mechano-chemical effects, and transport characteristics, with examples drawn from <i>Dictyostelium discoideum</i>, human neutrophils, <i>Caenorhabditis elegans</i>, and <i>Xenopus laevis</i> oocytes. While experimentalists focus on the details of molecular components, theorists pose a central question of universality: Are there generic, model-independent, underlying principles, or just boundless cell-specific details? We argue that mathematical methods are equally important for understanding the emergence, evolution, and persistence of actin waves and conclude with a few challenges for future studies.
