PUBLICATION

Zebrafish diencephalic A11-related dopaminergic neurons share a conserved transcriptional network with neuroendocrine cell lineages

Authors
Löhr, H., Ryu, S., and Driever, W.
ID
ZDB-PUB-090302-11
Date
2009
Source
Development (Cambridge, England)   136(6): 1007-1017 (Journal)
Registered Authors
Driever, Wolfgang, Löhr, Heiko, Ryu, Soojin
Keywords
Diencephalon, Hypothalamus, Dopaminergic neurons, Neurosecretory cells, otp, arnt2, sim1, Neural differentiation
MeSH Terms
  • Animals
  • Aryl Hydrocarbon Receptor Nuclear Translocator/genetics
  • Aryl Hydrocarbon Receptor Nuclear Translocator/metabolism
  • Base Sequence
  • Basic Helix-Loop-Helix Transcription Factors/genetics
  • Basic Helix-Loop-Helix Transcription Factors/metabolism
  • Cell Differentiation
  • Cell Lineage
  • Diencephalon/cytology*
  • Diencephalon/metabolism
  • Dopamine/metabolism*
  • Gene Expression Regulation, Developmental
  • Mutation/genetics
  • Neuroendocrine Cells/cytology*
  • Neuroendocrine Cells/metabolism*
  • Neurons/cytology
  • Neurons/metabolism*
  • Repressor Proteins/genetics
  • Repressor Proteins/metabolism
  • Transcription, Genetic*
  • Zebrafish/embryology
  • Zebrafish/genetics
  • Zebrafish/metabolism*
  • Zebrafish Proteins/genetics
  • Zebrafish Proteins/metabolism
PubMed
19234064 Full text @ Development
Abstract
Vertebrate dopaminergic neurons develop in distinct neural territories to constitute one of the major neuromodulatory systems. We have identified a zebrafish mutation in the bHLH-PAS family member arnt2, based on a strong reduction in cell number of specific dopaminergic neuron groups in the hypothalamus and posterior tuberculum. Knockdown of sim1 causes a dopaminergic phenotype similar to arnt2 mutants, suggesting that Sim1 acts as a binding partner of Arnt2, similar to their role in hypothalamic neuroendocrine cell specification. sim1, arnt2 and otp are co-expressed in dopaminergic neurons, and combined overexpression of Sim1 and Otp leads to formation of supernumerary dopaminergic neurons in the ventral diencephalon. Arnt2, Sim1 and Otp thus are core components of a conserved transcriptional network, which specifies neuroendocrine as well as A11-related dopaminergic neurons in the fish hypothalamus and posterior tuberculum. Our data suggest a common evolutionary origin of specific hypothalamic neuroendocrine and dopaminergic systems.
Genes / Markers
Figures
Expression
Phenotype
Mutation and Transgenics
Human Disease / Model Data
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping
Errata and Notes