Facial Motor Neuron Migration Advances
Overview
Affiliations
During development, the migration of specific neuronal subtypes is required for the correct establishment of neural circuits. In mice and zebrafish, facial branchiomotor (FBM) neurons undergo a tangential migration from rhombomere 4 caudally through the hindbrain. Recent advances in the field have capitalized on genetic studies in zebrafish and mouse, and high-resolution time-lapse imaging in zebrafish. Planar cell polarity signaling has emerged as a critical conserved factor in FBM neuron migration, functioning both within the neurons and their environment. In zebrafish, migration depends on specialized 'pioneer' neurons to lead follower FBM neurons through the hindbrain, and on interactions with structural components including pre-laid axon tracts and the basement membrane. Despite fundamental conservation, species-specific differences in migration mechanisms are being uncovered.
Early development of respiratory motor circuits in larval zebrafish (Danio rerio).
McArthur K, Tovar V, Griffin-Baldwin E, Tovar B, Astad E J Comp Neurol. 2023; 531(8):838-852.
PMID: 36881713 PMC: 10081962. DOI: 10.1002/cne.25467.
Development and migration of the zebrafish rhombencephalic octavolateral efferent neurons.
Beiriger A, Narayan S, Singh N, Prince V J Comp Neurol. 2020; 529(7):1293-1307.
PMID: 32869305 PMC: 8238524. DOI: 10.1002/cne.25021.
Zhu Y, Hirata T, Mackay F, Murakami F Sci Rep. 2020; 10(1):11830.
PMID: 32678266 PMC: 7367352. DOI: 10.1038/s41598-020-68852-z.
Gruner H, Kim M, Mastick G Neuroscience. 2019; 402:116-129.
PMID: 30685539 PMC: 6435285. DOI: 10.1016/j.neuroscience.2019.01.017.
Motor neuron migration and positioning mechanisms: New roles for guidance cues.
Kim M, Bjorke B, Mastick G Semin Cell Dev Biol. 2017; 85:78-83.
PMID: 29141180 PMC: 5951725. DOI: 10.1016/j.semcdb.2017.11.016.