PUBLICATION
Alkbh4 and Atrn Act Maternally to Regulate Zebrafish Epiboly
- Authors
- Sun, Q., Liu, X., Gong, B., Wu, D., Meng, A., Jia, S.
- ID
- ZDB-PUB-170920-7
- Date
- 2017
- Source
- International journal of biological sciences 13: 1051-1066 (Journal)
- Registered Authors
- Gong, Bo, Jia, Shunji, Meng, Anming, Wu, Di
- Keywords
- Actin, NMII, actomyosin, alkbh4, atrn, epiboly
- MeSH Terms
-
- Actins/metabolism
- Actomyosin/metabolism
- AlkB Homolog 4, Lysine Demethylase/metabolism*
- Animals
- Membrane Proteins/metabolism*
- Myosin Type II/metabolism
- Zebrafish/embryology*
- Zebrafish/metabolism*
- Zebrafish Proteins/metabolism*
- PubMed
- 28924386 Full text @ Int. J. Biol. Sci.
Citation
Sun, Q., Liu, X., Gong, B., Wu, D., Meng, A., Jia, S. (2017) Alkbh4 and Atrn Act Maternally to Regulate Zebrafish Epiboly. International journal of biological sciences. 13:1051-1066.
Abstract
During embryonic gastrulation, coordinated cell movements occur to bring cells to their correct position. Among them, epiboly produces the first distinct morphological changes, which is essential for the early development of zebrafish. Despite its fundamental importance, little is known to understand the underlying molecular mechanisms. By generating maternal mutant lines with CRISPR/Cas9 technology and using morpholino knockdown strategy, we showed that maternal Alkbh4 depletion leads to severe epiboly defects in zebrafish. Immunofluorescence assays revealed that Alkbh4 promotes zebrafish embryonic epiboly through regulating actomyosin contractile ring formation, which is composed of Actin and non-muscular myosin II (NMII). To further investigate this process, yeast two hybridization assay was performed and Atrn was identified as a binding partner of Alkbh4. Combining with the functional results of Alkbh4, we found that maternal Atrn plays a similar role in zebrafish embryonic morphogenesis by regulating actomyosin formation. On the molecular level, our data revealed that Atrn prefers to interact with the active form of Alkbh4 and functions together with it to regulate the demethylation of Actin, the actomyosin formation, and subsequently the embryonic epiboly.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping