title: Effect of crude oil petroleum hydrocarbons on protein expression of the prawn Macrobrachium borellii.
abstract: Hydrocarbon pollution is a major environmental threat to ecosystems in marine and freshwater environments, but its toxicological effect on aquatic organisms remains little studied. A proteomic approach was used to analyze the effect of a freshwater oil spill on the prawn Macrobrachium borellii. To this aim, proteins were extracted from midgut gland (hepatopancreas) of male and female prawns exposed 7 days to a sublethal concentration (0.6 ppm) of water-soluble fraction of crude oil (WSF). Exposure to WSF induced responses at the protein expression level. Two-dimensional gel electrophoresis (2-DE) revealed 10 protein spots that were differentially expressed by WSF exposure. Seven proteins were identified using MS/MS and de novo sequencing. Nm23 oncoprotein, arginine methyltransferase, fatty aldehyde dehydrogenase and glutathione S-transferase were down-regulated, whereas two glyceraldehyde-3-phosphate dehydrogenase isoforms and a lipocalin-like crustacyanin (CTC) were up-regulated after WSF exposure. CTC mRNA levels were further analyzed by quantitative real-time PCR showing an increased expression after WSF exposure. The proteins identified are involved in carbohydrate and amino acid metabolism, detoxification, transport of hydrophobic molecules and cellular homeostasis among others. These results provide evidence for better understanding the toxic mechanisms of hydrocarbons. Moreover, some of these differentially expressed proteins would be employed as potential novel biomarkers.
authors.affiliation: Instituto de Investigaciones Bioquímicas de La Plata (INIBIOLP), Universidad Nacional de La Plata (UNLP) - CONICET CCT-La Plata, La Plata, Argentina.
authors.forename: M Y
authors.initials: MY
authors.lastname: Pasquevich
authors.forename: M S
authors.initials: MS
authors.lastname: Dreon
authors.forename: J N
authors.initials: JN
authors.lastname: Gutierrez Rivera
authors.forename: C
authors.initials: C
authors.lastname: Vázquez Boucard
authors.forename: H
authors.initials: H
authors.lastname: Heras
mesh_terms: D000818:Animals; D015415:Biomarkers / Q000378:metabolism; D002352:Carrier Proteins / Q000235:genetics / Q000378:metabolism; D003600:Cytosol / Q000378:metabolism; D004781:Environmental Exposure / Q000032:analysis*; D005260:Female; D005786:Gene Expression Regulation / Q000187:drug effects; D005982:Glutathione Transferase / Q000235:genetics / Q000378:metabolism; D043143:Hepatopancreas / Q000187:drug effects / Q000378:metabolism; D006838:Hydrocarbons / Q000009:adverse effects*; D047908:Intracellular Signaling Peptides and Proteins / Q000235:genetics / Q000378:metabolism; D008297:Male; D033541:Palaemonidae / Q000187:drug effects* / Q000378:metabolism; D010578:Petroleum / Q000009:adverse effects*; D011484:Protein-Arginine N-Methyltransferases / Q000235:genetics / Q000378:metabolism; D020543:Proteome / Q000032:analysis* / Q000187:drug effects; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D018675:Toxicity Tests; D014874:Water Pollutants, Chemical / Q000009:adverse effects
chemical_list: D015415:Biomarkers; D002352:Carrier Proteins; D006838:Hydrocarbons; D047908:Intracellular Signaling Peptides and Proteins; D010578:Petroleum; D020543:Proteome; D012333:RNA, Messenger; D014874:Water Pollutants, Chemical; C018494:crustacyanins; C077013:PRMT2 protein, human; D011484:Protein-Arginine N-Methyltransferases; D005982:Glutathione Transferase