Multigenerational Exposure to WCCo Nanomaterials-Epigenetics in the Soil Invertebrate Enchytraeus crypticus.

Multigenerational Exposure to WCCo Nanomaterials-Epigenetics in the Soil Invertebrate Enchytraeus crypticus.
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DOI:
10.3390/nano10050836
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发表时间:
2020-04-27
期刊:
Nanomaterials (Basel, Switzerland)
影响因子:
--
通讯作者:
Amorim MJB
Amorim MJB
中科院分区:
其他
文献类型:
--
作者:
Bicho RC;Scott-Fordsmand JJ;Amorim MJB

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鉴于目前的证据表明表观遗传学如何驱动反应机制,评估(纳米)材料在环境中的长期影响是多么重要,这一点已经变得很明显。在这里,我们研究了标准土壤无脊椎动物Enchytraeus crypticus在多代实验中暴露于纳米结构碳化钨钴(WCCO纳米材料(NMS))和钴(CoCl2)时224天的全球DNA甲基化。为了评估跨代效应,我们使用了多世代(MG)试验设计,该试验设计包括在加穗土壤中的四代,然后在清洁土壤中的两代。结果表明,MG暴露于WCCO NMS导致全球DNA甲基化增加,这种情况在未暴露的世代中持续存在,并与生殖增加有关(表型效应)。一般来说,WCCO NMS引起的甲基化比CoCl2更多(也更一致)。
It has become clear how important it is to assess longer term effects of (nano) materials in the environment given the current evidence showing how epigenetics drives response mechanisms. Here we studied global DNA methylation in standard soil invertebrate Enchytraeus crypticus over 224 days when exposed to nanostructured tungsten carbide cobalt (WCCo nanomaterials (NMs)) and to cobalt (CoCl2) in a multigenerational experiment. In order to assess the transgenerational effect, we used a multigenerational (MG) test design consisting of four generations in spiked soil followed by two generations in clean soil. Results showed that MG exposure to WCCo NMs caused global DNA methylation to increase, which continued in unexposed generations and was associated with an increase in reproduction (phenotypic effect). In general, WCCo NMs caused more (and more consistent) methylation than CoCl2.
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