Effects on tadpole snail gene expression after exposure to vinclozolin



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Aquilino, Mónica and Sánchez-Argüello, Paloma and Novo Rodríguez, Marta and Martínez-Guitarte, J. L. (2019) Effects on tadpole snail gene expression after exposure to vinclozolin. Ecotoxicology and Environmental Safety, 170 . pp. 568-577. ISSN 1090-2414

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Official URL: https://www.sciencedirect.com/science/article/pii/S0147651318313022?via%3Dihub


The fungicide vinclozolin (Vz) is an endocrine disruptor with known anti-androgenic activity in vertebrates. However, there is a lack of information about the Vz mode of action in invertebrates, although some studies have shown that this compound can produce alterations in different species. Transcriptional activity was analyzed in the freshwater snail Physella acuta in order to elucidate putative cellular processes altered by this chemical during a response. In order to identify potential molecular biomarkers, a de novo transcriptome was generated for this species that constitutes a valuable source for future studies. This data, together with some already available data, permitted the identification of several genes related to detoxification mechanisms (Cyp2u1, Cyp3a7, Cyp4f22, GSTo1, GSTt2, and MRP1), stress response (Hsp20.4, Hsp17, Hsp16.6, and Cu,Zn-SOD), the hormonal system (Estrogen Receptor and Hsp90), apoptosis (Casp3), and copper homeostasis (ATOX1). Using quantitative Real-Time polymerase chain reaction, mRNA levels of these genes were examined in snails exposed to 20 or 200 µg/L Vz for 24 h. The results showed an overall weak response, with downregulation of Hsp20.4 and no statistically significant change for the other genes. These findings suggest that P. acuta can manage the concentrations of Vz found in the environment with no relevant activation of the pathways analyzed, although additional studies are needed for longer exposure times and including other metabolic pathways. The new genes described open the range of processes that can be studied at the molecular level in toxicity tests.

Item Type:Article
Uncontrolled Keywords:Vinclozolin, Physella acuta, de novo transcriptome, Biomarkers, Detoxification mechanisms, Stress response, Endocrine related genes
Subjects:Medical sciences > Biology > Animal physiology
Medical sciences > Biology > Genetics
ID Code:57282
Deposited On:08 Oct 2019 15:05
Last Modified:09 Oct 2019 07:37

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