PUBLICATION
Calaxin is a key factor for calcium-dependent waveform control in zebrafish sperm
- Authors
- Morikawa, M., Yamaguchi, H., Kikkawa, M.
- ID
- ZDB-PUB-240615-15
- Date
- 2024
- Source
- Life science alliance 7(9): (Journal)
- Registered Authors
- Kikkawa, Masahide
- Keywords
- none
- MeSH Terms
-
- Zebrafish Proteins*/genetics
- Zebrafish Proteins*/metabolism
- Zebrafish*
- Animals, Genetically Modified*
- Dyneins*/genetics
- Dyneins*/metabolism
- Calcium*/metabolism
- Cilia/metabolism
- Animals
- Male
- Spermatozoa*/metabolism
- Spermatozoa*/physiology
- Flagella/metabolism
- Flagella/physiology
- Calcium-Binding Proteins/genetics
- Calcium-Binding Proteins/metabolism
- Sperm Motility/genetics
- Sperm Motility/physiology
- PubMed
- 38876797 Full text @ Life Sci Alliance
Citation
Morikawa, M., Yamaguchi, H., Kikkawa, M. (2024) Calaxin is a key factor for calcium-dependent waveform control in zebrafish sperm. Life science alliance. 7(9):.
Abstract
Calcium is critical for regulating the waveform of motile cilia and flagella. Calaxin is currently the only known molecule involved in the calcium-dependent regulation in ascidians. We have recently shown that Calaxin stabilizes outer arm dynein (OAD), and the knockout of Calaxin results in primary ciliary dyskinesia phenotypes in vertebrates. However, from the knockout experiments, it was not clear which functions depend on calcium and how Calaxin regulates the waveform. To address this question, here, we generated transgenic zebrafish expressing a mutant E130A-Calaxin deficient in calcium binding. E130A-Calaxin restored the OAD reduction of calaxin-/- sperm and the abnormal movement of calaxin-/- left-right organizer cilia, showing that Calaxin's stabilization of OADs is calcium-independent. In contrast, our quantitative analysis of E130A-Calaxin sperms showed that the calcium-induced asymmetric beating was not restored, linking Calaxin's calcium-binding ability with an asymmetric flagellar beating for the first time. Our data show that Calaxin is a calcium-dependent regulator of the ciliary beating and a calcium-independent OAD stabilizer.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping