PUBLICATION
Dpysl2 (CRMP2) is required for the migration of facial branchiomotor neurons in the developing zebrafish embryo
- Authors
- Fiallos-Oliveros, C., Ohshima, T.
- ID
- ZDB-PUB-201219-7
- Date
- 2020
- Source
- The International journal of developmental biology 64: 479-484 (Journal)
- Registered Authors
- Ohshima, Toshio
- Keywords
- none
- MeSH Terms
-
- Animals
- Cell Movement*
- Facial Nerve/cytology
- Facial Nerve/embryology*
- Gene Knockout Techniques
- Motor Neurons/physiology*
- Nerve Tissue Proteins/genetics
- Nerve Tissue Proteins/physiology*
- Nervous System/embryology
- Zebrafish/embryology
- Zebrafish/physiology
- Zebrafish Proteins/genetics
- Zebrafish Proteins/physiology*
- PubMed
- 33336710 Full text @ Int. J. Dev. Biol.
Citation
Fiallos-Oliveros, C., Ohshima, T. (2020) Dpysl2 (CRMP2) is required for the migration of facial branchiomotor neurons in the developing zebrafish embryo. The International journal of developmental biology. 64:479-484.
Abstract
Dihydropyrimidinase-like family proteins (Dpysls) are relevant in several processes during nervous system development; among others, they are involved in axonal growth and cell migration. Dpysl2 (CRMP2) is the most studied member of this family; however, its role in vivo is still being investigated. Our previous studies in zebrafish showed the requirement of Dpysl2 for the proper positioning of caudal primary motor neurons and Rohon-Beard neurons in the spinal cord.In the present study, we show that Dpysl2 is necessary for the proper migration of facial branchiomotor neurons during early development in zebrafish. We generated a dpysl2 knock-out (KO) zebrafish mutant line and used different types of antisense morpholino oligonucleotides (AMO) to analyze the role of Dpysl2 in this process. Both dpysl2 KO mutants and morphants exhibited abnormalities in the migration of these neurons from rhombomers (r) 4 and 5 to 6 and 7. The facial branchiomotor neurons that were expected to be at r6 were still located at r4 and r5 hours after the migration process should have been completed. In addition, mutant phenotypes were rescued by injecting dpysl2 mRNA into the KO embryos. These results indicate that Dpysl2 is involved in the proper migration of facial branchiomotor neurons in developing zebrafish embryos.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping