PUBLICATION

Diving into the streams and waves of constitutive and regenerative olfactory neurogenesis: insights from zebrafish

Authors
Calvo-Ochoa, E., Byrd-Jacobs, C.A., Fuss, S.H.
ID
ZDB-PUB-201128-6
Date
2020
Source
Cell and tissue research   383(1): 227-253 (Review)
Registered Authors
Byrd-Jacobs, Christine, Fuss, Stefan
Keywords
Nerve cell regeneration, Neurogenesis, Olfactory system, Stem cells, Zebrafish
MeSH Terms
  • Animals
  • Neurogenesis/physiology*
  • Receptors, Odorant/physiology*
  • Zebrafish
PubMed
33245413 Full text @ Cell Tissue Res.
Abstract
The olfactory system is renowned for its functional and structural plasticity, with both peripheral and central structures displaying persistent neurogenesis throughout life and exhibiting remarkable capacity for regenerative neurogenesis after damage. In general, fish are known for their extensive neurogenic ability, and the zebrafish in particular presents an attractive model to study plasticity and adult neurogenesis in the olfactory system because of its conserved structure, relative simplicity, rapid cell turnover, and preponderance of neurogenic niches. In this review, we present an overview of the anatomy of zebrafish olfactory structures, with a focus on the neurogenic niches in the olfactory epithelium, olfactory bulb, and ventral telencephalon. Constitutive and regenerative neurogenesis in both the peripheral olfactory organ and central olfactory bulb of zebrafish is reviewed in detail, and a summary of current knowledge about the cellular origin and molecular signals involved in regulating these processes is presented. While some features of physiologic and injury-induced neurogenic responses are similar, there are differences that indicate that regeneration is not simply a reiteration of the constitutive proliferation process. We provide comparisons to mammalian neurogenesis that reveal similarities and differences between species. Finally, we present a number of open questions that remain to be answered.
Genes / Markers
Figures
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping