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| Content Provider | Springer Nature Link |
|---|---|
| Author | Nguyen, Hoa Thanh Tsuchiya, Maria Claret Lauan Yoo, Jean Iida, Midori Agusa, Tetsuro Hira, Masashi Kim, Eun Young Miyazaki, Tatsuhiko se, Masato Iwata, Hisato |
| Copyright Year | 2016 |
| Abstract | Dioxins cause various toxic effects through the aryl hydrocarbon receptor (AHR) in vertebrates, with dramatic species and strain differences in susceptibility. Although inbred mouse strains C3H/HeJ-lpr/lpr (C3H/lpr) and MRL/MpJ-lpr/lpr (MRL/lpr) are known as dioxin-sensitive and dioxin-resistant mice, respectively, the molecular mechanism underlying this difference remains unclear. The difference in the hepatic proteome of the two mouse strains treated with vehicle or 2,3,7,8-tetrabromodibenzo-p-dioxin (TBDD) was investigated by a proteomic approach of two-dimensional electrophoresis (2-DE) coupled with matrix-assisted laser desorption/ionization time-of-flight/time-of-flight tandem mass spectrometry (MALDI-TOF/TOF). To confirm the strain-difference in response to TBDD treatment, cytochrome P450 (CYP) 1A1 and 1A2 protein levels were measured in both strains. A dose of 10 µg/kg body weight of TBDD induced hepatic CYP1A1 and CYP1A2 expression in both strains, but the expression levels of both CYP1A proteins were higher in C3H/lpr mice than in MRL/lpr mice, supporting that C3H/lpr mice are more sensitive to dioxins than MRL/lpr mice. Proteins that were more induced or suppressed by TBDD treatment in C3H/lpr mice were successfully identified by 2-DE and MALDI-TOF/TOF, including proteins responsible for AHR activation through production of endogenous ligands such as aspartate aminotransferase, indolethylamine N-methyltransferase, and aldehyde dehydrogenases, as well as proteins reducing oxidative stress, such as superoxide dismutase and peroxiredoxins. Taken together, our results provide insights into the molecular mechanism underlying the high dioxin susceptibility of the C3H/lpr strain, in which AHR activation by TBDD is more prompted by the production of endogenous ligands, but the adaptation to oxidative stress is also acquired. |
| Starting Page | 1763 |
| Ending Page | 1782 |
| Page Count | 20 |
| File Format | |
| ISSN | 03405761 |
| Journal | Archives of Toxicology |
| Volume Number | 91 |
| Issue Number | 4 |
| e-ISSN | 14320738 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2016-09-07 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Dioxin Susceptibility Proteome C3H/lpr MRL/lpr Pharmacology/Toxicology Occupational Medicine/Industrial Medicine Environmental Health Biomedicine |
| Content Type | Text |
| Resource Type | Article |
| Subject | Health, Toxicology and Mutagenesis Medicine Toxicology |
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