How a Reaction-Diffusion Signal Can Control Spinal Cord Regeneration in Axolotls: A Modelling Study

This study explores the mechanisms behind axolotls' ability to regenerate their spinal cord after amputation, focusing on a reaction-diffusion process as a potential explanation for the propagation of a regeneration-inducing signal. The researchers developed a computational model, validated with experimental data, to demonstrate that the dynamics of this signal can be explained by a reaction-diffusion mechanism. The findings suggest that the control of the regenerative response is dependent on the sensitivity of cells to the signal and the characteristic length of the signal's reaction-diffusion. This theoretical framework provides a basis for further research into identifying the specific signal responsible for spinal cord regeneration in axolotls.