PUBLICATION
Fundc1 is necessary for proper body axis formation during embryogenesis in zebrafish
- Authors
- Xu, G., Shen, H., Nibona, E., Wu, K., Ke, X., Al Hafiz, M.A., Liang, X., Zhong, X., Zhou, Q., Qi, C., Zhao, H.
- ID
- ZDB-PUB-191213-2
- Date
- 2019
- Source
- Scientific Reports 9: 18910 (Journal)
- Registered Authors
- Zhou, Qingchun
- Keywords
- none
- MeSH Terms
-
- Animals
- Apoptosis/genetics
- Autophagy/genetics
- Cell Line
- Cell Proliferation/genetics
- Embryonic Development/genetics*
- Gene Knockdown Techniques
- Membrane Proteins/genetics*
- Membrane Proteins/metabolism
- Mitochondria/genetics*
- Mitochondria/metabolism
- Mitochondrial Proteins/genetics*
- Mitochondrial Proteins/metabolism
- Zebrafish
- Zebrafish Proteins/genetics*
- Zebrafish Proteins/metabolism
- PubMed
- 31827208 Full text @ Sci. Rep.
Citation
Xu, G., Shen, H., Nibona, E., Wu, K., Ke, X., Al Hafiz, M.A., Liang, X., Zhong, X., Zhou, Q., Qi, C., Zhao, H. (2019) Fundc1 is necessary for proper body axis formation during embryogenesis in zebrafish. Scientific Reports. 9:18910.
Abstract
FUN14 domain-containing protein 1 (FUNDC1) is a mitochondrial outer membrane protein which is responsible for hypoxia-induced mitophagy in mammalian cells. Knockdown of fundc1 is known to cause severe defects in the body axis of a rare minnow. To understand the role of Fundc1 in embryogenesis, we used zebrafish in this study. We used bioimaging to locate zebrafish Fundc1 (DrFundc1) with MitoTracker, a marker of mitochondria, and/or CellLight Lysosomes-GFP, a label of lysosomes, in the transfected ovary cells of grass carp. The use of Western blotting detected DrFundc1 as a component of mitochondrial proteins with endogenous COX IV, LC3B, and FUNDC1 in transgenic human embryonic kidney 293 T cells. DrFundc1 induced LC3B activation. The ectopic expression of Drfundc1 caused cell death and apoptosis as well as impairing cell proliferation in the 293 T cell line, as detected by Trypan blue, terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) and incorporation of BrdU. DrFundc1 up-regulated expression of both autophagy- and apoptosis-related genes, including ATG5, ATG7, LC3B, BECLIN1, and BAX in transgenic 293 T cells. A knockdown of Drfundc1 using short hairpin RNA (shRNA) led to midline bifurcation with two notochords and two spinal cords in zebrafish embryos. Co-injection of Drfundc1 mRNA repaired defects resulting from shRNA. Knockdown of Drfundc1 resulted in up- or down-regulation of genes related to autophagy and apoptosis, as well as decreased expression of neural genes such as cyclinD1, pax2a, opl, and neuroD1. In summary, DrFundc1 is a mitochondrial protein which is involved in mitophagy and is critical for typical body axis development in zebrafish.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping