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个人简介
In collaboration with the laboratory of Professor Jason Matthews at the University of Oslo, our current general interest is in studying the molecular mechanisms that underlie the pathological consequences of exposure to potential chemical toxicants. Such consequences include risk for side effects from drugs as well as risk for cancers and other diseases due to environmental or dietary exposures to chemicals. One class of environmental chemicals that have been of particular interest to us are the polycyclic aromatic hydrocarbons (PAHs). Exposure to PAHs occurs because of their ubiquity in the environment as by-products of chemical manufacturing processes, in cigarette smoke and in other combustion events. Epidemiological and animal studies have linked PAH exposure to a variety of disorders, including acute tissue damage, metabolic and immune dysfunction, endocrine disorders, inflammatory conditions, and cancers of a variety of tissues. Such toxicities are often triggered only after these chemicals have been bioactivated into cytotoxic and genotoxic electrophiles by drug-metabolizing enzymes. The cytochromes P450 (CYPs) are one key superfamily of drug-metabolizing enzymes that can convert PAHs into either safe or more toxic metabolites. The PAHs (as well as several structurally related endogenous and dietary chemicals) are also capable of inducing the expression of certain CYPs and other drug-metabolizing enzymes, as well as that of many other important intracellular pathway components, by acting as specific ligands for the aryl hydrocarbon receptor (AHR), a key nuclear transcription factor. However, AHR ligands are now also known to include many compounds of endogenous or dietary origin. Our overall goal is to understand how differences in levels of key transcriptional co-regulators affect AHR ligand mediated signaling, disposition and risk for toxicity. We use pharmacokinetic, biochemical, molecular biology, cell culture, transcriptomic, proteomic and analytical techniques in genetically modified strains of mice and rats, cultured cells, cloned genes and expressed gene products to analyze toxicant disposition, gene structure, gene regulation, enzyme function and toxicity endpoints.
研究兴趣
论文共 143 篇作者统计合作学者相似作者
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Cancer Letterspp.216805-216805, (2024)
Marit Rasmussen, Karoline Alvik,Vinicius Kannen,Ninni E. Olafsen, Linnea A. M. Erlingsson,Giulia Grimaldi,Akinori Takaoka,Denis M. Grant,Jason Matthews
CANCERSno. 14 (2023)
Cell chemical biologyno. 1 (2022): 43-54.e8
Atkinson's Principles of Clinical Pharmacologypp.267-302, (2022)
Marit Rasmussen, Susanna Tan,Venkata S. Somisetty,David Hutin, Ninni Elise Olafsen,Anders Moen, Jan H. Anonsen,Denis M. Grant,Jason Matthews
Cellsno. 623 (2021): 623
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