Journal
PHYSICAL REVIEW LETTERS
Volume 129, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.129.128101
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Funding
- National Natural Science Foundation of China [U1932132, 12032014, 11921002, 11620101001, 12102218]
- National Key R&D Program of China [2017YFF0106303]
- Natural Science Foundation of Chongqing [cstc2018jcyjAX0405]
- China Postdoctoral Science Foundation [2020M680525]
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In this study, a theoretical framework was developed to investigate the force-regulated states and transitions in growing axons. A unique negative feedback mechanism was discovered, defining four distinct kinetic states in the axon growth process. This research provides valuable insights into the understanding of axonal development.
Growing axons are one-dimensional active structures that are important for wiring the brain and repairing nerves. However, the biophysical mechanisms underlying the complex kinetics of growing axons remain elusive. Here, we develop a theoretical framework to recapitulate force-regulated states and their transitions in growing axons. We demonstrate a unique negative feedback mechanism that defines four distinct kinetic states in a growing axon, whose transitional boundaries depend on the interplay between cytoskeletal dynamics and axon-substrate adhesion. A phase diagram for axonal growth is formulated based on two dimensionless numbers.
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