The technique of serial blockface scanning electron microscopy, which permits the complete reconstruction of neuronal structures, allows comparison of the detailed "wiring diagrams" of lateral-line receptor organs in wild-type and mutant zebrafish.
Emx2 is not required for sibling HCs to acquire their designated locations within the neuromast, inferring that Emx2 mediates opposite HC orientation by changing location of hair bundle establishment.
Abolishing opposing hair cell orientation in mouse otolith and zebrafish neuromast organs preserves segregation of afferent innervation but affects zebrafish mechanotransduction and mouse vestibular reflexes.
Semaphorin7A sculpts the collective arbor architecture of the lateral line nerve and facilitates neural contacts with the hair cells for synaptogenesis during neuromast development in the zebrafish.
Emx2 mediates the directional selectivity of neuromasts by regulating hair bundle orientation in hair cells, and by selecting afferent neuronal targets.
Spatial factors generate neuroblast-specific open chromatin, thereby biasing the subsequent binding of transcription factors to produce neuroblast-specific neurons.
Melanie Holmgren, Michael E Ravicz ... Lavinia Sheets
Mechanically induced injury of zebrafish lateral-line organs shares key features of damage observed in noise-exposed mammalian ears, such as inflammation and synapse loss, yet, unlike mammals, rapidly repairs following damage.
A combination of live cell tracking, cell-lineage tracing and machine learning shows that injured sensory organs repair accurately regardless of the extent of damage.
The termination of medulla neuroblasts is specified by the depletion of the neuroepithelium and mediated by apoptosis, differentiation, and gliogenic switch.
A physical niche for neural stem cells is generated by the induction of the immediate skin epithelium, a process triggered by the arrival of neural precursors during sensory organ formation in medaka.