PUBLICATION
Evolution of inwardly rectifying potassium channels and their gene expression in zebrafish embryos
- Authors
- Silic, M.R., Murata, S.H., Park, S.J., Zhang, G.
- ID
- ZDB-PUB-210925-7
- Date
- 2021
- Source
- Developmental Dynamics : an official publication of the American Association of Anatomists 251(4): 687-713 (Journal)
- Registered Authors
- Keywords
- GIRK, IRK, Inwardly rectifying potassium channels, KATP, KCNJ, KIR, ROMK, WGD (whole genome duplication), evolution, phylogeny, synteny, zebrafish
- MeSH Terms
-
- Gene Expression
- Embryonic Development/genetics
- Phylogeny
- Animals
- Potassium Channels, Inwardly Rectifying*/genetics
- Potassium Channels, Inwardly Rectifying*/metabolism
- Zebrafish*/genetics
- Zebrafish*/metabolism
- PubMed
- 34558132 Full text @ Dev. Dyn.
Citation
Silic, M.R., Murata, S.H., Park, S.J., Zhang, G. (2021) Evolution of inwardly rectifying potassium channels and their gene expression in zebrafish embryos. Developmental Dynamics : an official publication of the American Association of Anatomists. 251(4):687-713.
Abstract
Background Inwardly rectifying potassium channels are essential for normal potassium homeostasis, maintaining the cellular resting membrane potential, and regulating electrical/electrolyte transportation. Mutations in Kir channels have been known to cause debilitating diseases ranging from neurological abnormalities to renal and cardiac failures. Many efforts have been made to understand their protein structures, physiological functions, and pharmacological modifiers. However, their expression and functions during embryonic development remain largely unknown.
Results Using zebrafish as a model, we identified and renamed 31 kir genes. We also analyzed Kir gene evolution by phylogenetic and syntenic analyses. Our data indicated that the four subtypes of the Kir genes might have already evolved out in chordates. These vertebrate Kir genes most likely resulted from both whole-genome duplications and tandem duplications. In addition, we examined zebrafish kir gene expression during early embryogenesis. Each subgroup's genes showed similar but distinct gene expression domains. The gene expression of ohnologous genes from teleost-specific whole-genome duplication indicated subfunctionalization. Varied gene expression domains suggest that Kir channels may be needed for embryonic patterning or regulation.
Conclusions Our phylogenetic and developmental analyses of Kir channels shed light on their evolutionary history and potential functions during embryogenesis related to congenital diseases and human channelopathies. This article is protected by copyright. All rights reserved.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping