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Grinberg, M. (author), Stöber, R.M. (author), Edlund, K. (author), Rempel, E. (author), Godoy, P. (author), Reif, R. (author), Widera, A. (author), Madjar, K. (author), Schmidt-Heck, W. (author), Marchan, R. (author), Sachinidis, A. (author), Spitkovsky, D. (author), Hescheler, J. (author), Carmo, H. (author), Arbo, M.D. (author), van de Water, B. (author), Wink, S. (author), Vinken, M. (author), Rogiers, V. (author), Escher, S. (author), Hardy, B. (author), Mitic, D. (author), Myatt, G. (author), Waldmann, T. (author), Mardinoglu, A. (author), Damm, G. (author), Seehofer, D. (author), Nüssler, A. (author), Weiss, T.S. (author), Oberemm, A. (author), Lampen, A. (author), Schaap, M.M. (author), Luijten, M. (author), van Steeg, H. (author), Thasler, W.E. (author), Kleinjans, J.C.S. (author), Stierum, R.H. (author), Leist, M. (author), Rahnenführer, J. (author), Hengstler, J.G. (author)
A long-term goal of numerous research projects is to identify biomarkers for in vitro systems predicting toxicity in vivo. Often, transcriptomics data are used to identify candidates for further evaluation. However, a systematic directory summarizing key features of chemically influenced genes in human hepatocytes is not yet available. To bridge...
article 2014
document
Dihal, A.A. (author), van der Woude, H. (author), Hendriksen, P.J.M. (author), Charif, H. (author), Dekker, L.J. (author), IJsselstijn, L. (author), de Boer, V.C.J. (author), Alink, G.M. (author), Burgers, P.C. (author), Rietjens, I.M.C.M. (author), Woutersen, R.A. (author), Stierum, R.H. (author), TNO Kwaliteit van Leven (author), KvL (author)
Quercetin has been shown to act as an anticarcinogen in experimental colorectal cancer (CRC). The aim of the present study was to characterize transcriptome and proteome changes occurring in the distal colon mucosa of rats supplemented with 10 g quercetin/kg diet for 11 wk. Transcriptome data analyzed with Gene Set Enrichment Analysis showed...
article 2008
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Stierum, R. (author), Conesa, A. (author), Heijne, W. (author), Ommen, B.v. (author), Junker, K. (author), Scott, M.P. (author), Price, R.J. (author), Meredith, C. (author), Lake, B.G. (author), Groten, J. (author), TNO Kwaliteit van Leven (author), KvL (author)
Transcriptomics was performed to gain insight into mechanisms of food additives butylated hydroxytoluene (BHT), curcumin (CC), propyl gallate (PG), and thiabendazole (TB), additives for which interactions in the liver can not be excluded. Additives were administered in diets for 28 days to Sprague-Dawley rats and cDNA microarray experiments were...
article 2008
document
Dihal, A.A. (author), Tilburgs, C. (author), van Erk, M.J. (author), Rietjens, I.M.C.M. (author), Woutersen, R.A. (author), Stierum, R.H. (author), TNO Kwaliteit van Leven (author)
The aim was to investigate mechanisms contributing to quercetin's previously described effects on cell-proliferation and -differentiation, which contradicted its proposed anticarcinogenic potency. In a 10-day experiment, 40 μM quercetin stabilized by 1 mM ascorbate reduced Caco-2 differentiation up to 50% (p < 0.001). Caco-2 RNA from days 5 and...
article 2007
document
Kienhuis, A.S. (author), Wortelboer, H.M. (author), Maas, W.J. (author), van Herwijnen, M. (author), Kleinjans, J.C.S. (author), van Delft, J.H.M. (author), Stierum, R.H. (author), TNO Kwaliteit van Leven (author)
A rapid decline of cytochrome P450 (CYP450) enzyme activities remains a drawback of rat hepatocyte-based in vitro cultures. Consequently, judgment of the toxic potential of compounds that need bioactivation by CYP450s may not be adequate using this model. In the present study, an improved hepatocyte-based in vitro system was developed with...
article 2007
document
Kienhuis, A.S. (author), Wortelboer, H.M. (author), Hoflack, J.C. (author), Moonen, E.J. (author), Kleinjans, J.C.S. (author), van Ommen, B. (author), van Delft, J.H.M. (author), Stierum, R.H. (author), TNO Kwaliteit van Leven (author)
Sandwich-cultured primary rat hepatocytes are often used as an in vitro model in toxicology and pharmacology. However, loss of liver-specific functions, in particular, the decline of cytochrome P450 (P450) enzyme activity, limits the value of this model for prediction of in vivo toxicity. In this study, we investigated whether a hepatic in vitro...
article 2006
document
Heijne, W.H.M. (author), Jonker, D. (author), Stierum, R.H. (author), van Ommen, B. (author), Groten, J.P. (author), TNO Kwaliteit van Leven (author)
Benzene is an industrial chemical, component of automobile exhaust and cigarette smoke. After hepatic bioactivation benzene induces bone marrow, blood and hepatic toxicity. Using a toxicogenomics approach this study analysed the effects of benzene at three dose levels on gene expression in the liver after 28 daily doses. NMR based metabolomics...
article 2005
document
van Erk, M.J. (author), Roepman, P. (author), van der Lende, T.R. (author), Stierum, R.H. (author), Aarts, J.M.M.J.G. (author), van Bladeren, P.J. (author), van Ommen, B. (author), TNO Kwaliteit van Leven (author)
Background: Many different mechanisms are involved in nutrient-related prevention of colon cancer. In this study, a comprehensive assessment of the spectrum of possible biological actions of the bioactive compound quercetin is made using multiple gene expression analysis. Quercetin is a flavonoid that can inhibit proliferation of tumor cells and...
article 2005
document
Heijne, W.H.M. (author), Stierum, R.H. (author), Slijper, M. (author), van Bladeren, P.J. (author), van Ommen, B. (author)
Toxicogenomics is a novel approach integrating the expression analysis of thousands of genes (transcriptomics) or proteins (proteomics) with classical methods in toxicology. Effects at the molecular level are related to pathophysiological changes of the organisms, enabling detailed comparison of mechanisms and early detection and prediction of...
article 2003
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