PUBLICATION
Behavioral changes and transcriptomic effects at embryonic and post-embryonic stages reveal the toxic effects of 2,2',4,4'-tetrabromodiphenyl ether on neurodevelopment in zebrafish (Danio rerio)
- Authors
- Zheng, S., Zhang, Q., Wu, R., Shi, X., Peng, J., Tan, W., Huang, W., Wu, K., Liu, C.
- ID
- ZDB-PUB-221125-13
- Date
- 2022
- Source
- Ecotoxicology and environmental safety 248: 114310114310 (Journal)
- Registered Authors
- Wu, Kusheng
- Keywords
- BDE-47, Embryos, Larvae, Neurobehavior, Neurodevelopmental toxicity
- MeSH Terms
-
- Animals
- Ether*
- Ethyl Ethers
- Halogenated Diphenyl Ethers/toxicity
- Larva
- Transcriptome
- Zebrafish*/genetics
- PubMed
- 36423367 Full text @ Ecotoxicol. Environ. Saf.
Citation
Zheng, S., Zhang, Q., Wu, R., Shi, X., Peng, J., Tan, W., Huang, W., Wu, K., Liu, C. (2022) Behavioral changes and transcriptomic effects at embryonic and post-embryonic stages reveal the toxic effects of 2,2',4,4'-tetrabromodiphenyl ether on neurodevelopment in zebrafish (Danio rerio). Ecotoxicology and environmental safety. 248:114310114310.
Abstract
Polybrominated biphenyl ethers (PBDEs) are new persistent pollutants that are widely exist in the environment and have many toxic effects. However, their toxicity mechanisms on neurodevelopment are still unclear. In this study, zebrafish embryos were exposed to 2, 2', 4, 4'-tetrabromodiphenyl ether (BDE-47) (control, 10, 50 and 100 μg/L) at 2 h postfertilization (hpf) - 7 dpf. Locomotion analysis indicated that BDE-47 increased spontaneous coiling activity in zebrafish embryos under high-intensity light stimuli and decreased locomotor in zebrafish larvae. RNA-Seq analysis revealed that most of the up-regulated pathways were related to the metabolism of cells and tissues, while the down-regulated pathways were related to neurodevelopment. Consistent with the locomotion and KEGG results, BDE-47 affected the expression of genes for central nervous system (gfap, mbpa, bdnf & pomcb), early neurogenesis (neurog1 & elavl3), and axonal development (tuba1a, tuba1b, tuba1c, syn2a, gap43 & shha). Furthermore, BDE-47 interfered with gene expression of the Wnt signaling pathway, especially during embryonic stages, suggesting that the mechanisms of BDE-47 toxicity to zebrafish at various stages of neurodevelopment may be different. In summary, early neurodevelopment effects and metabolic disturbances may have contributed to the abnormal neurobehavioral changes induced by BDE-47 in zebrafish embryos/larvae, suggesting the neurodevelopmental toxicity of BDE-47.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping