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Unravelling the molecular mechanisms of nickel in woodlice

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Ferreira, Nuno G. C. and Morgado, Rui G. and Cunha, Luis and Novo Rodríguez, Marta and Soares, Amadeu M.V.M. and Morgan, Andreu J. and Loureiro, Susana and Kille, Peter (2019) Unravelling the molecular mechanisms of nickel in woodlice. Environmental Research, 176 (108507). pp. 1-10. ISSN 0013-9351, ESSN: 1096-0953

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Official URL: https://www.sciencedirect.com/science/article/pii/S0013935119302968



Abstract

During the last few years, there has been an alarming increase in the amount of nickel (Ni) being released into the environment, primarily due to its use in the production of stainless steel but also from other sources such as batteries manufacturing and consequent disposal. The established biotic ligand models provide precise estimates for Ni bioavailability, in contrast, studies describing the mechanisms underpinning toxicological effect of Ni are scarce. This study exploits RNA-seq to determine the transcriptomic responses of isopods using Porcellionides pruinosus as an example of a terrestrial metal-resistant woodlouse. Furthermore, the recently proposed model for Ni adverse outcome pathways (Ni-AOP) presents an unprecedented opportunity to fit isopod responses to Ni toxicity and define Porcellionides pruinosus as a metalomic model. Prior to this study, P. pruinosus represented an important environmental sentinel, though lacking genetic/ omic data. The reference transcriptome generated here thus represents a major advance and a novel resource. A detailed annotation of the transcripts obtained is presented together with the homology to genes/gene products from Metazoan and Arthropoda phylum, Gene Ontology (GO) classification, clusters of orthologous groups (COG) and assignment to KEGG metabolic pathways. The differential gene expression comparison was determined in response to nickel (Ni) exposure and used to derive the enriched pathways and processes. It revealed a significant impact on ion trafficking and storage, oxidative stress, neurotoxicity, reproduction impairment, genetics and epigenetics. Many of the processes observed support the current Ni-AOP although the data highlights that the current model can be improved by including epigenetic endpoints, which represents key chronic risks under a scenario of Ni toxicity.


Item Type:Article
Uncontrolled Keywords:Transcriptome; RNA-Seq analysis; Terrestrial isopods; Metal trafficking
Subjects:Medical sciences > Biology > Genetics
Medical sciences > Biology > Invertebrates
ID Code:57349
Deposited On:14 Oct 2019 14:48
Last Modified:14 Oct 2019 15:54

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