PUBLICATION
Protein profiles in zebrafish (Danio rerio) brains exposed to chronic microcystin-LR
- Authors
- Wang, M., Wang, D., Lin, L., and Hong, H.
- ID
- ZDB-PUB-100910-2
- Date
- 2010
- Source
- Chemosphere 81(6): 716-724 (Journal)
- Registered Authors
- Wang, Da-Zhi
- Keywords
- Microcystin-LR, Protein phosphatase, Proteomics, Chronic toxicity
- MeSH Terms
-
- Animals
- Brain/drug effects*
- Brain/metabolism
- Microcystins/metabolism
- Microcystins/toxicity*
- Neurotoxins/metabolism
- Neurotoxins/toxicity*
- Phosphoprotein Phosphatases/metabolism
- Proteome/metabolism
- Zebrafish/metabolism*
- Zebrafish Proteins/metabolism*
- PubMed
- 20800265 Full text @ Chemosphere
Citation
Wang, M., Wang, D., Lin, L., and Hong, H. (2010) Protein profiles in zebrafish (Danio rerio) brains exposed to chronic microcystin-LR. Chemosphere. 81(6):716-724.
Abstract
Microcystin-LR (MCLR) is a commonly encountered blue-green algal hepatotoxin and a known inhibitor of cellular protein phosphatase (PP), however, little is known about its neurotoxicity. This study investigated the protein profiles of zebrafish (Danio rerio) brains chronically exposed to MCLR concentrations (2 or 20mugL(-1)) using the proteomic approach. The results showed that MCLR strikingly enhanced toxin accumulation and the PP activity in zebrafish brains after 30 d exposure. Comparison of two-dimensional electrophoresis protein profiles of MCLR exposed and non-exposed zebrafish brains revealed that the abundance of 30 protein spots was remarkably altered in response to MCLR exposure. These proteins are involved in cytoskeleton assembly, macromolecule metabolism, oxidative stress, signal transduction, and other functions (e.g. transporting, protein degradation, apoptosis and translation), indicating that MCLR toxicity in the fish brain is complex and diverse. The chronic neurotoxicity of MCLR might initiate the PP pathway via an upregulation of PP2C in the zebrafish brain, in addition to the reactive oxygen species pathway. Additionally, the increase of vitellogenin abundance in MCLR exposed zebrafish brains suggested that MCLR might mimic the effects of endocrine disrupting chemicals. This study demonstrated that MCLR causes neurotoxicity in zebrafish at the proteomic level, which provides a new insight into MCLR toxicity in aquatic organisms and human beings.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping