Identification of five partial ABC-transporter genes in the liver of the Antarctic fish Trematomus bernacchii: sensitivity of ABCB1 and ABCC2 to Cd

Several ABC transporters have been characterized from many aquatic organisms, but no information is yet available for Antarctic fish. The aim of this work was to identify the expression of genes for ABC proteins in Trematomus bernacchii, a bioindicator species of the Southern Ocean. Partial cDNA seq...

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Bibliographic Details
Published in:Environmental Pollution
Main Authors: ZUCCHI, S., CORSI, I., LUCKENBACH, T., BARD, S. M., REGOLI, F., FOCARDI, S.
Other Authors: Zucchi, S., Corsi, I., Luckenbach, T., Bard, S. M., Regoli, F., Focardi, S.
Format: Article in Journal/Newspaper
Language:English
Published: 2010
Subjects:
ABC transporter
Antarctica
Cadmium
Liver
Trematomus bernacchii
Antarctic
Southern Ocean
Terra Nova Bay
The Antarctic
Antarc*
Online Access:http://hdl.handle.net/11365/3454
https://doi.org/10.1016/j.envpol.2010.04.012
Description
Summary:Several ABC transporters have been characterized from many aquatic organisms, but no information is yet available for Antarctic fish. The aim of this work was to identify the expression of genes for ABC proteins in Trematomus bernacchii, a bioindicator species of the Southern Ocean. Partial cDNA sequences of ABCB1, ABCC1, ABCC2, ABCC4 and ABCC9 were cloned from liver. Using RACE technology, 3.5 and 2.2 kb contigs were obtained for ABCB1 and ABCC2. Considering the elevated natural bioavailability of cadmium at Terra Nova Bay, responsiveness of ABCB1 and ABCC2 to this element was investigated under laboratory conditions. ABCB1 and ABCC2 mRNA levels were approximately four-fold higher in Cd-exposed fish compared to the controls. Induction of ABCB1 protein was also found by western blot. This study provides the first identification of five ABC genes in the liver of an Antarctic key species, some of which may be involved in cellular detoxification. © 2010 Elsevier Ltd. All rights reserved.

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