Edges Cause Cilia To Synchronize Their Beating Pattern
Border regions can cause cilia to coordinate their motion in a unidirectional wave – like a Mexican wave in a football stadium.
Complete the form below to unlock access to ALL audio articles.
Border regions can cause cilia to coordinate their motion creating a unidirectional wave that is essential for biological functions. Scientists from the Max Planck Institute for Dynamics and Self-Organization (MPI-DS) in Göttingen proposed a new model describing this synchronized pattern driven by the border region.
What do the crowd at a football stadium, the feet of a centipede, and the inside of your lungs have in common? All of these systems show the same specific kind of organization, as it was recently found by the scientists. The Mexican wave in a stadium looks like a pattern traveling across the tiers. Similarly, the legs of a centipede move in canon with illusory waves sweeping along its entire length. On a microscopic level, tiny hairs in our lungs called cilia wave together to transport mucus. This serves as a first line of defense against invading pathogens.
Unequal interactions between cilia cause synchronization
To create a synchronized and efficient wave, cilia need to accurately coordinate their beating motion. Unlike football fans watching their neighbors and the nervous system coordinating the centipede’s legs, cilia have no such intelligent control system.
Synchronization of cilia is initiated by border regions
“The cilia at a border region take the role as a pacemaker which entrain other cilia one after another”, Hickey summarizes the findings. “This observation is different from previous models where boundaries were assumed to perturb the order”, he continues. This view was also shared by the renowned physicist Wolfgang Pauli who joked about this: “God made solids, but surfaces were the work of the devil.” As found now, border regions of surfaces can in fact allow a better understanding of the self-organization of living matter. At the same time, the model reveals striking similarities between mechanisms in the microscopic world and on the macroscopic scale.
Reference: Hickey DJ, Golestanian R, Vilfan A. Nonreciprocal interactions give rise to fast cilium synchronization in finite systems. PNAS. 2023;120(40):e2307279120. doi: 10.1073/pnas.2307279120
This article has been republished from the following materials. Note: material may have been edited for length and content. For further information, please contact the cited source.