Benzo[a]pyrene decreases global and gene specific DNA methylation during zebrafish development.
Benzo[a]pyrene decreases global and gene specific DNA methylation during zebrafish development.
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DOI:
10.1016/j.etap.2013.02.014
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发表时间:
2013-07
影响因子:
4.3
通讯作者:
Willett KL
中科院分区:
文献类型:
--
作者:
Fang X;Thornton C;Scheffler BE;Willett KL
DNA methylation is important for gene regulation and is vulnerable to early-life exposure to environmental contaminants. We found that direct waterborne benzo[a]pyrene (BaP) exposure at 24 μg/L from 2.5 to 96 hours post fertilization (hpf) to zebrafish embryos significantly decreased global cytosine methylation by 44.8% and promoter methylation in vasa by 17%. Consequently, vasa expression was significantly increased by 33%. In contrast, BaP exposure at environmentally relevant concentrations did not change CpG island methylation or gene expression in cancer genes such as ras-association domain family member 1 (rassf1), telomerase reverse transcriptase (tert), c-jun, and c-myca. Similarly, BaP did not change gene expression of DNA methyltransferase 1 (dnmt1) and glycine N-methyltransferase (gnmt). While total DNMT activity was not affected, GNMT enzyme activity was moderately increased. In summary, BaP is an epigenetic modifier for global and gene specific DNA methylation status in zebrafish larvae.
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DOI:
10.1093/toxsci/kfq179
发表时间:
2010-09
期刊:
Toxicological sciences : an official journal of the Society of Toxicology
影响因子:
--
作者:
Kee K;Flores M;Cedars MI;Reijo Pera RA
通讯作者:
Reijo Pera RA
影响因子:
3.6
作者:
Baccarelli A;Bollati V
通讯作者:
Bollati V
影响因子:
30.8
作者:
Dammann, R;Li, C;Pfeifer, GP
通讯作者:
Pfeifer, GP
影响因子:
2.9
作者:
Hu, WW;Feng, ZH;Tang, MS
通讯作者:
Tang, MS
影响因子:
3.6
作者:
Coussens, Matthew;Yamazaki, Yukiko;Allsopp, Richard
通讯作者:
Allsopp, Richard