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	Protein profiles in zebrafish (Danio rerio) brains exposed to chronic microcystin-LR
	Wang, Minghua ; Wang, Dazhi ; Wang DZ(王大志) ; Lin, Lin ; Hong, Huasheng ; Hong HS(洪华生)
	2010-10
关键词	Microcystin-LR Protein phosphatase Proteomics Chronic toxicity
英文摘要	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 20 mu g L-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. (c) 2010 Elsevier Ltd. All rights reserved.; National Natural Science Foundation of China [40806051]; State Key Laboratory of Marine Environmental Science ; Program for New Century Excellent Talents in University
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1016/j.chemosphere.2010.07.061]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Wang, Minghua,Wang, Dazhi,Wang DZ,et al. Protein profiles in zebrafish (Danio rerio) brains exposed to chronic microcystin-LR[J],2010.
APA	Wang, Minghua,Wang, Dazhi,王大志,Lin, Lin,Hong, Huasheng,&洪华生.(2010).Protein profiles in zebrafish (Danio rerio) brains exposed to chronic microcystin-LR..
MLA	Wang, Minghua,et al."Protein profiles in zebrafish (Danio rerio) brains exposed to chronic microcystin-LR".(2010).

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