Hexachlorobenzene exerts genotoxic effects in a humpback whale cell line under stable exposure conditions
Humpback whales, like other polar wildlife, accumulate persistent organic pollutants. In Southern hemisphere populations, hexachlorobenzene (HCB) dominates the contaminant profiles. HCB is linked to a variety of health effects and is classified as a group 2B carcinogen, but the mechanism of action i...
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Royal Society of Chemistry
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/387161 2023-08-27T04:09:54+02:00 Hexachlorobenzene exerts genotoxic effects in a humpback whale cell line under stable exposure conditions Maner, Jenny Burkard, Michael Cassano, Juan C. Bengtson Nash, Susan Schirmer, Kristin Suter, Marc J.-F. 2019 application/application/pdf https://hdl.handle.net/20.500.11850/387161 https://doi.org/10.3929/ethz-b-000387161 en eng Royal Society of Chemistry info:eu-repo/semantics/altIdentifier/doi/10.1039/c9ra05352b info:eu-repo/semantics/altIdentifier/wos/000501820700055 http://hdl.handle.net/20.500.11850/387161 doi:10.3929/ethz-b-000387161 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc/3.0/ Creative Commons Attribution-NonCommercial 3.0 Unported RSC Advances, 9 (67) info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2019 ftethz https://doi.org/20.500.11850/38716110.3929/ethz-b-00038716110.1039/c9ra05352b 2023-08-06T23:49:25Z Humpback whales, like other polar wildlife, accumulate persistent organic pollutants. In Southern hemisphere populations, hexachlorobenzene (HCB) dominates the contaminant profiles. HCB is linked to a variety of health effects and is classified as a group 2B carcinogen, but the mechanism of action is a matter of contention. Potential toxicological effects to humpback whales remain entirely unknown. The recently established humpback whale fibroblast cell line (HuWa) offers an in vitro model for toxicological investigations. We here combine this novel cell line with a passive dosing strategy to investigate whale-specific toxicity of HCB. The relevant partitioning coefficients were determined to produce stable and predictable exposure concentrations in small-scale bioassays. The system was used to assess acute toxicity as well as genotoxicity of HCB to the HuWa cell line. While we found some transient reductions in metabolic activity, measured with the indicator dye alamarBlue, no clear acute toxic effects were discernible. Yet, a significant increase in DNA damage, detected in the alkaline comet assay, was found in HuWa cells exposed to 10 μg L−1 HCB during the sensitive phase of cell attachment. Collectively, this work provides a ready-to-use passive dosing system and delivers evidence that HCB elicits genotoxicity in humpback whale cells. ISSN:2046-2069 Article in Journal/Newspaper Humpback Whale ETH Zürich Research Collection |
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Open Polar |
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ETH Zürich Research Collection |
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language |
English |
description |
Humpback whales, like other polar wildlife, accumulate persistent organic pollutants. In Southern hemisphere populations, hexachlorobenzene (HCB) dominates the contaminant profiles. HCB is linked to a variety of health effects and is classified as a group 2B carcinogen, but the mechanism of action is a matter of contention. Potential toxicological effects to humpback whales remain entirely unknown. The recently established humpback whale fibroblast cell line (HuWa) offers an in vitro model for toxicological investigations. We here combine this novel cell line with a passive dosing strategy to investigate whale-specific toxicity of HCB. The relevant partitioning coefficients were determined to produce stable and predictable exposure concentrations in small-scale bioassays. The system was used to assess acute toxicity as well as genotoxicity of HCB to the HuWa cell line. While we found some transient reductions in metabolic activity, measured with the indicator dye alamarBlue, no clear acute toxic effects were discernible. Yet, a significant increase in DNA damage, detected in the alkaline comet assay, was found in HuWa cells exposed to 10 μg L−1 HCB during the sensitive phase of cell attachment. Collectively, this work provides a ready-to-use passive dosing system and delivers evidence that HCB elicits genotoxicity in humpback whale cells. ISSN:2046-2069 |
format |
Article in Journal/Newspaper |
author |
Maner, Jenny Burkard, Michael Cassano, Juan C. Bengtson Nash, Susan Schirmer, Kristin Suter, Marc J.-F. |
spellingShingle |
Maner, Jenny Burkard, Michael Cassano, Juan C. Bengtson Nash, Susan Schirmer, Kristin Suter, Marc J.-F. Hexachlorobenzene exerts genotoxic effects in a humpback whale cell line under stable exposure conditions |
author_facet |
Maner, Jenny Burkard, Michael Cassano, Juan C. Bengtson Nash, Susan Schirmer, Kristin Suter, Marc J.-F. |
author_sort |
Maner, Jenny |
title |
Hexachlorobenzene exerts genotoxic effects in a humpback whale cell line under stable exposure conditions |
title_short |
Hexachlorobenzene exerts genotoxic effects in a humpback whale cell line under stable exposure conditions |
title_full |
Hexachlorobenzene exerts genotoxic effects in a humpback whale cell line under stable exposure conditions |
title_fullStr |
Hexachlorobenzene exerts genotoxic effects in a humpback whale cell line under stable exposure conditions |
title_full_unstemmed |
Hexachlorobenzene exerts genotoxic effects in a humpback whale cell line under stable exposure conditions |
title_sort |
hexachlorobenzene exerts genotoxic effects in a humpback whale cell line under stable exposure conditions |
publisher |
Royal Society of Chemistry |
publishDate |
2019 |
url |
https://hdl.handle.net/20.500.11850/387161 https://doi.org/10.3929/ethz-b-000387161 |
genre |
Humpback Whale |
genre_facet |
Humpback Whale |
op_source |
RSC Advances, 9 (67) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1039/c9ra05352b info:eu-repo/semantics/altIdentifier/wos/000501820700055 http://hdl.handle.net/20.500.11850/387161 doi:10.3929/ethz-b-000387161 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc/3.0/ Creative Commons Attribution-NonCommercial 3.0 Unported |
op_doi |
https://doi.org/20.500.11850/38716110.3929/ethz-b-00038716110.1039/c9ra05352b |
_version_ |
1775351575806476288 |