TY  - JOUR
A1  - Ross, Jillian
A1  - Plummer, Simon M.
A1  - Rode, Anja
A1  - Scheer, Nico
A1  - Bower, Conrad C.
A1  - Vogel, Ortwin
A1  - Henderson, Colin J.
A1  - Wolf, C. Roland
A1  - Elcombe, Clifford R.
T1  - Human constitutive androstane receptor (CAR) and pregnane X receptor (PXR) support the  hypertrophic but not the hyperplastic response to the murine nongenotoxic hepatocarcinogens phenobarbital and chlordane in vivo
JF  - Toxicological Sciences
N2  - Mouse nongenotoxic hepatocarcinogens phenobarbital (PB) and chlordane induce hepatomegaly characterized by hypertrophy and hyperplasia. Increased cell proliferation is implicated in the mechanism of tumor induction. The relevance of these tumors to human health is unclear. The xenoreceptors, constitutive androstane receptors (CARs), and pregnane X receptor (PXR) play key roles in these processes. Novel “humanized” and knockout models for both receptors were developed to investigate potential species differences in hepatomegaly. The effects of PB (80 mg/kg/4 days) and chlordane (10 mg/kg/4 days) were investigated in double humanized PXR and CAR (huPXR/huCAR), double knockout PXR and CAR (PXRKO/CARKO), and wild-type (WT) C57BL/6J mice. In WT mice, both compounds caused increased liver weight, hepatocellular hypertrophy, and cell proliferation. Both compounds caused alterations to a number of cell cycle genes consistent with induction of cell proliferation in WT mice. However, these gene expression changes did not occur in PXRKO/CARKO or huPXR/huCAR mice. Liver hypertrophy without hyperplasia was demonstrated in the huPXR/huCAR animals in response to both compounds. Induction of the CAR and PXR target genes, Cyp2b10 and Cyp3a11, was observed in both WT and huPXR/huCAR mouse lines following treatment with PB or chlordane. In the PXRKO/CARKO mice, neither liver growth nor induction of Cyp2b10 and Cyp3a11 was seen following PB or chlordane treatment, indicating that these effects are CAR/PXR dependent. These data suggest that the human receptors are able to support the chemically induced hypertrophic responses but not the hyperplastic (cell proliferation) responses. At this time, we cannot be certain that hCAR and hPXR when expressed in the mouse can function exactly as the genes do when they are expressed in human cells. However, all parameters investigated to date suggest that much of their functionality is maintained.
Y1  - 2010
U6  - https://doi.org/10.1093/toxsci/kfq118
SN  - 1096-0929
VL  - 116
IS  - 2
SP  - 452
EP  - 466
PB  - Oxford University Press
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Whitehead, Mark
A1  - Öhlschläger, Peter
A1  - Almajhdi, Fahad N.
A1  - Alloza, Leonor
A1  - Marzábal, Pablo
A1  - Meyers, Ann E.
A1  - Hitzeroth, Inga I.
A1  - Rybicki, Edward P.
T1  - Human papillomavirus (HPV) type 16 E7 protein bodies cause tumour regression in mice
JF  - BMC cancer
Y1  - 2014
U6  - https://doi.org/10.1186/1471-2407-14-367
SN  - 1471-2407
IS  - 14:367
SP  - 1
EP  - 15
PB  - BioMed Central
CY  - London
ER  - 
TY  - JOUR
A1  - Öhlschläger, Peter
A1  - Osen, Wolfram
A1  - Dell, Kerstin
A1  - Faath, Stefan
T1  - Human papillomavirus type 16 L1 capsomeres induce L1-specific cytotoxic T lymphocytes and tumor regression in C57BL/6 mice / Öhlschläger, Peter ; Osen, Wolfram ; Dell, Kerstin ; Faath, Stefan ; Garcea Robert L: ; Jochmus, Ingrid ; Müller, Martin, Pawlita,
JF  - Journal of Virology. 77 (2003), H. 8
Y1  - 2003
SN  - 1098-5514
SP  - 4635
EP  - 4645
ER  - 
TY  - JOUR
A1  - Danho, Waleed
A1  - Naithani, Vinod K.
A1  - Sasaki, André N.
A1  - Föhles, Joseph
A1  - Berndt, Heinz
A1  - Büllesbach, Erika E.
A1  - Zahn, H.
T1  - Human proinsulin, VII : synthesis of two protected peptides corresponding to the sequences 1—45 and 46—86 of the prohormone
JF  - Hoppe-Seyler's Zeitschrift für physiologische Chemie
Y1  - 1980
U6  - https://doi.org/10.1515/bchm2.1980.361.1.857
SN  - 1437-4315
SN  - 0018-4888
VL  - 361
IS  - 1
SP  - 857
EP  - 863
ER  - 
TY  - CHAP
A1  - Kazuki, Yasuhiro
A1  - Kobayashi, Kaoru
A1  - Hirabayashi, Masumi
A1  - Abe, Satoshi
A1  - Kajitani, Naoyo
A1  - Kazuki, Kanoko
A1  - Takehara, Shoko
A1  - Takiguchi, Masato
A1  - Satoh, Daisuke
A1  - Kuze, Jiro
A1  - Sakuma, Tetsushi
A1  - Kaneko, Takehito
A1  - Mashimo, Tomoji
A1  - Osamura, Minori
A1  - Hashimoto, Mari
A1  - Wakatsuki, Riko
A1  - Hirashima, Rika
A1  - Fujiwara, Ryoichi
A1  - Deguchi, Tsuneo
A1  - Kurihara, Atsushi
A1  - Tsukazaki, Yasuko
A1  - Senda, Naoto
A1  - Yamamoto, Takashi
A1  - Scheer, Nico
A1  - Oshimura, Mitsuo
T1  - Humanized UGT2 and CYP3A transchromosomic rats for improved prediction of human drug metabolism
T2  - PNAS Proceedings of the National Academy of Sciences of the United States of America
Y1  - 2019
U6  - https://doi.org/10.1073/pnas.1808255116
SN  - 1091-6490
VL  - 116
IS  - 8
SP  - 3072
EP  - 3081
ER  - 
TY  - JOUR
A1  - Breuer, Lars
A1  - Raue, Markus
A1  - Strobel, M.
A1  - Mang, Thomas
A1  - Schöning, Michael Josef
A1  - Thoelen, R.
A1  - Wagner, Torsten
T1  - Hydrogels with incorporated graphene oxide as light-addressable actuator materials for cell culture environments in lab-on-chip systems
JF  - Physica status solidi (a)
N2  - Abstractauthoren Graphene oxide (GO) nanoparticles were incorporated in temperature-sensitive Poly(N-isopropylacrylamide) (PNIPAAm) hydrogels. The nanoparticles increase the light absorption and convert light energy into heat efficiently. Thus, the hydrogels with GO can be stimulated spatially resolved by illumination as it was demonstrated by IR thermography. The temporal progression of the temperature maximum was detected for different concentrations of GO within the polymer network. Furthermore, the compatibility of PNIPAAm hydrogels with GO and cell cultures was investigated. For this purpose, culture medium was incubated with hydrogels containing GO and the viability and morphology of chinese hamster ovary (CHO) cells was examined after several days of culturing in presence of this medium.
Y1  - 2016
U6  - https://doi.org/10.1002/pssa.201533056
SN  - 1862-6300
VL  - 213
IS  - 6
SP  - 1520
EP  - 1525
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Tix, Julian
A1  - Moll, Fabian
A1  - Krafft, Simone
A1  - Betsch, Matthias
A1  - Tippkötter, Nils
T1  - Hydrogen production from enzymatic pretreated organic waste with thermotoga neapolitana
JF  - Energies
N2  - Biomass from various types of organic waste was tested for possible use in hydrogen production. The composition consisted of lignified samples, green waste, and kitchen scraps such as fruit and vegetable peels and leftover food. For this purpose, the enzymatic pretreatment of organic waste with a combination of five different hydrolytic enzymes (cellulase, amylase, glucoamylase, pectinase and xylase) was investigated to determine its ability to produce hydrogen (H2) with the hydrolyzate produced here. In course, the anaerobic rod-shaped bacterium T. neapolitana was used for H2 production. First, the enzymes were investigated using different substrates in preliminary experiments. Subsequently, hydrolyses were carried out using different types of organic waste. In the hydrolysis carried out here for 48 h, an increase in glucose concentration of 481% was measured for waste loads containing starch, corresponding to a glucose concentration at the end of hydrolysis of 7.5 g·L−1. In the subsequent set fermentation in serum bottles, a H2 yield of 1.26 mmol H2 was obtained in the overhead space when Terrific Broth Medium with glucose and yeast extract (TBGY medium) was used. When hydrolyzed organic waste was used, even a H2 yield of 1.37 mmol could be achieved in the overhead space. In addition, a dedicated reactor system for the anaerobic fermentation of T. neapolitana to produce H2 was developed. The bioreactor developed here can ferment anaerobically with a very low loss of produced gas. Here, after 24 h, a hydrogen concentration of 83% could be measured in the overhead space.
KW  - Biological hydrogen
KW  - Organic waste
KW  - Dark fermentation
KW  - Hydrolysis
KW  - Pretreatment
Y1  - 2024
U6  - https://doi.org/10.3390/en17122938
SN  - 1996-1073
N1  - Corresponding author: Nils Tippkötter
VL  - 17
IS  - 12
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Lempiäinen, Harri
A1  - Couttet, Philippe
A1  - Bolognani, Federico
A1  - Müller, Arne
A1  - Dubost, Valérie
A1  - Luisier, Raphaëlle
A1  - Rio-Espinola, Alberto del
A1  - Vitry, Veronique
A1  - Unterberger, Elif B.
A1  - Thomson, John P.
A1  - Treindl, Fridolin
A1  - Metzger, Ute
A1  - Wrzodek, Clemens
A1  - Hahne, Florian
A1  - Zollinger, Tulipan
A1  - Brasa, Sarah
A1  - Kalteis, Magdalena
A1  - Marcellin, Magali
A1  - Giudicelli, Fanny
A1  - Braeuning, Albert
A1  - Morawiec, Laurent
A1  - Zamurovic, Natasa
A1  - Längle, Ulrich
A1  - Scheer, Nico
A1  - Schübeler, Dirk
A1  - Goodman, Jay
A1  - Chibout, Salah-Dine
A1  - Marlowe, Jennifer
A1  - Theil, Dietlinde
A1  - Heard, David J.
A1  - Grenet, Olivier
A1  - Zell, Andreas
A1  - Templin, Markus F.
A1  - Meehan, Richard R.
A1  - Wolf, Roland C.
A1  - Elcombe, Clifford R.
A1  - Schwarz, Michael
A1  - Moulin, Pierre
A1  - Terranova, Rémi
A1  - Moggs, Jonathan G.
T1  - Identification of Dlk1-Dio3 imprinted gene cluster non-coding RNAs as novel candidate biomarkers for liver tumor promotion
JF  - Toxicological Sciences
N2  - The molecular events during nongenotoxic carcinogenesis and their temporal order are poorly understood but thought to include long-lasting perturbations of gene expression. Here, we have investigated the temporal sequence of molecular and pathological perturbations at early stages of phenobarbital (PB) mediated liver tumor promotion in vivo. Molecular profiling (mRNA, microRNA [miRNA], DNA methylation, and proteins) of mouse liver during 13 weeks of PB treatment revealed progressive increases in hepatic expression of long noncoding RNAs and miRNAs originating from the Dlk1-Dio3 imprinted gene cluster, a locus that has recently been associated with stem cell pluripotency in mice and various neoplasms in humans. PB induction of the Dlk1-Dio3 cluster noncoding RNA (ncRNA) Meg3 was localized to glutamine synthetase-positive hypertrophic perivenous hepatocytes, sug- gesting a role for β-catenin signaling in the dysregulation of Dlk1-Dio3 ncRNAs. The carcinogenic relevance of Dlk1-Dio3 locus ncRNA induction was further supported by in vivo genetic dependence on constitutive androstane receptor and β-catenin pathways. Our data identify Dlk1-Dio3 ncRNAs as novel candidate early biomarkers for mouse liver tumor promotion and provide new opportunities for assessing the carcinogenic potential of novel compounds.
Y1  - 2012
U6  - https://doi.org/10.1093/toxsci/kfs303
SN  - 1094-2025
VL  - 131
IS  - 2
SP  - 375
EP  - 386
PB  - Oxford University Press
CY  - Oxford
ER  - 
TY  - CHAP
A1  - Kalbe, Jochen
A1  - Kuropka, Rolf
A1  - Meyer-Stork, L. Sebastian
A1  - Lauter, S. L.
A1  - Höcker, Hartwig
A1  - Berndt, Heinz
ED  - Körner, Andrea
T1  - Identification of fine animal hair via DNA analysis
T2  - Proceedings of the 1st International Symposium on Specialty Animal Fibers : Aachen, October 26 - 27, 1987 ; [scientific, technological and economical aspects] . - (Schriftenreihe des Deutschen Wollforschungsinstitutes an der Technischen Hochschule Aachen e.V. ; 103)
Y1  - 1988
SN  - 0930-3723
SP  - 221
EP  - 227
PB  - Dt. Wollforschungsinst.
CY  - Aachen
ER  - 
TY  - JOUR
A1  - Elbers, Gereon
T1  - Identification of marker peptides in hair for discrimination with regard to species and breed / Koerner, Andrea ; Ring, Maike ; Fabry, Marlies ; Elbers, Gereon ; Moeller, Martin
JF  - Proceedings of the Aachen-Dresden International Textile Conference, 3rd, Aachen, Germany, Nov. 26-27, 2009
Y1  - 2009
N1  - Aachen-Dresden International Textile Conference ; (3 : ; 2009.11.26-27 : ; Aachen)
PB  - DWI
CY  - Aachen
ER  -