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Crean D, Bellwon P, Aschauer L, Limonciel A, Moenks K, Hewitt P, Schmidt T, Herrgen K, Dekant W, Lukas A, Bois F, Wilmes A, Jennings P, Leonard MO. Development of an in vitro renal epithelial disease state model for xenobiotic toxicity testing. Toxicol In Vitro 2014; 30:128-37. [PMID: 25536518 DOI: 10.1016/j.tiv.2014.11.015] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 11/25/2014] [Accepted: 11/30/2014] [Indexed: 12/28/2022]
Abstract
There is a growing impetus to develop more accurate, predictive and relevant in vitro models of renal xenobiotic exposure. As part of the EU-FP7, Predict-IV project, a major aim was to develop models that recapitulate not only normal tissue physiology but also aspects of disease conditions that exist as predisposing risk factors for xenobiotic toxicity. Hypoxia, as a common micro-environmental alteration associated with pathophysiology in renal disease, was investigated for its effect on the toxicity profile of a panel of 14 nephrotoxins, using the human proximal tubular epithelial RPTECT/TERT1 cell line. Changes in ATP, glutathione and resazurin reduction, after 14 days of daily repeat exposure, revealed a number of compounds, including adefovir dipivoxil with enhanced toxicity in hypoxia. We observed intracellular accumulation of adefovir in hypoxia and suggest decreases in the efflux transport proteins MRP4, MRP5, NHERF1 and NHERF3 as a possible explanation. MRP5 and NHERF3 were also down-regulated upon treatment with the HIF-1 activator, dimethyloxalylglycine. Interestingly, adefovir dependent gene expression shifted from alterations in cell cycle gene expression to an inflammatory response in hypoxia. The ability to investigate aspects of disease states and their influence on renal toxin handling is a key advantage of in vitro systems developed here. They also allow for detailed investigations into mechanisms of compound toxicity of potential importance for compromised tissue exposure.
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Affiliation(s)
- Daniel Crean
- University College Dublin, School of Medicine and Medical Science, Dublin, Ireland
| | - Patricia Bellwon
- Institut fuer Toxikologie, Universitaet Wuerzburg, Versbacher Str. 9, 97078 Würzburg, Germany
| | - Lydia Aschauer
- Division of Physiology, Department of Physiology and Medical Physics, Innsbruck Medical University, Innsbruck 6020, Austria
| | - Alice Limonciel
- Division of Physiology, Department of Physiology and Medical Physics, Innsbruck Medical University, Innsbruck 6020, Austria
| | - Konrad Moenks
- Emergentec Biodevelopment GmbH, Vienna 1180, Austria
| | - Philip Hewitt
- Merck KGaA, Merck Serono, Nonclinical Safety, Darmstadt 64293, Germany
| | - Tobias Schmidt
- Institut fuer Toxikologie, Universitaet Wuerzburg, Versbacher Str. 9, 97078 Würzburg, Germany
| | - Karin Herrgen
- Institut fuer Toxikologie, Universitaet Wuerzburg, Versbacher Str. 9, 97078 Würzburg, Germany
| | - Wolfgang Dekant
- Institut fuer Toxikologie, Universitaet Wuerzburg, Versbacher Str. 9, 97078 Würzburg, Germany
| | - Arno Lukas
- Emergentec Biodevelopment GmbH, Vienna 1180, Austria
| | - Frederic Bois
- Université de Technologie de Compiègne, Compiègne Cedex 60205, France
| | - Anja Wilmes
- Division of Physiology, Department of Physiology and Medical Physics, Innsbruck Medical University, Innsbruck 6020, Austria
| | - Paul Jennings
- Division of Physiology, Department of Physiology and Medical Physics, Innsbruck Medical University, Innsbruck 6020, Austria
| | - Martin O Leonard
- Centre for Radiation, Chemical and Environmental Hazards, Public Health England, Chilton, Didcot OX11 0RQ, UK.
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52
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Expression of xenobiotic transporters in the human renal proximal tubule cell line RPTEC/TERT1. Toxicol In Vitro 2014; 30:95-105. [PMID: 25500123 DOI: 10.1016/j.tiv.2014.12.003] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 11/17/2014] [Accepted: 12/03/2014] [Indexed: 12/20/2022]
Abstract
The kidney is a major target for drug-induced injury, primarily due the fact that it transports a wide variety of chemical entities into and out of the tubular lumen. Here, we investigated the expression of the main xenobiotic transporters in the human renal proximal tubule cell line RPTEC/TERT1 at an mRNA and/or protein level. RPTEC/TERT1 cells expressed OCT2, OCT3, OCTN2, MATE1, MATE2, OAT1, OAT3 and OAT4. The functionality of the OCTs was demonstrated by directional transport of the fluorescent dye 4-Di-1-ASP. In addition, P-glycoprotein activity in RPTEC/TERT1 cells was verified by fluorescent dye retention in presence of various P-glycoprotein inhibitors. In comparison to proliferating cells, contact inhibited RPTEC/TERT1 cells expressed increased mRNA levels of several ABC transporter family members and were less sensitive to cyclosporine A. We conclude that differentiated RPTEC/TERT1 cells are well suited for utilisation in xenobiotic transport and pharmacokinetic studies.
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53
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Application of RPTEC/TERT1 cells for investigation of repeat dose nephrotoxicity: A transcriptomic study. Toxicol In Vitro 2014; 30:106-16. [PMID: 25450743 DOI: 10.1016/j.tiv.2014.10.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 09/30/2014] [Accepted: 10/03/2014] [Indexed: 12/14/2022]
Abstract
The kidney is a major target organ for toxicity. Incidence of chronic kidney disease (CKD) is increasing at an alarming rate due to factors such as increasing population age and increased prevalence of heart disease and diabetes. There is a major effort ongoing to develop superior predictive models of renal injury and early renal biomarkers that can predict onset of CKD. In the EU FP7 funded project, Predict-IV, we investigated the human renal proximal tubule cells line, RPTEC/TERT1 for their applicability to long term nephrotoxic mechanistic studies. To this end, we used a tiered strategy to optimise dosing regimes for 9 nephrotoxins. Our final testing protocol utilised differentiated RPTEC/TERT1 cells cultured on filter inserts treated with compounds at both the apical and basolateral side, at concentrations not exceeding IC10, for 14 days in a 24 h repeat application. Transepithelial electrical resistance and supernatant lactate were measured over the duration of the experiments and genome wide transcriptomic profiles were assayed at day 1, 3 and 14. The effect of hypoxia was investigated for a subset of compounds. The transcriptomic data were analysed to investigate compound-specific effects, global responses and mechanistically informative signatures. In addition, several potential clinically useful renal injury biomarkers were identified.
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54
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Wilmes A, Bielow C, Ranninger C, Bellwon P, Aschauer L, Limonciel A, Chassaigne H, Kristl T, Aiche S, Huber CG, Guillou C, Hewitt P, Leonard MO, Dekant W, Bois F, Jennings P. Mechanism of cisplatin proximal tubule toxicity revealed by integrating transcriptomics, proteomics, metabolomics and biokinetics. Toxicol In Vitro 2014; 30:117-27. [PMID: 25450742 DOI: 10.1016/j.tiv.2014.10.006] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 09/18/2014] [Accepted: 10/02/2014] [Indexed: 11/19/2022]
Abstract
Cisplatin is one of the most widely used chemotherapeutic agents for the treatment of solid tumours. The major dose-limiting factor is nephrotoxicity, in particular in the proximal tubule. Here, we use an integrated omics approach, including transcriptomics, proteomics and metabolomics coupled to biokinetics to identify cell stress response pathways induced by cisplatin. The human renal proximal tubular cell line RPTEC/TERT1 was treated with sub-cytotoxic concentrations of cisplatin (0.5 and 2 μM) in a daily repeat dose treating regime for up to 14 days. Biokinetic analysis showed that cisplatin was taken up from the basolateral compartment, transported to the apical compartment, and accumulated in cells over time. This is in line with basolateral uptake of cisplatin via organic cation transporter 2 and bioactivation via gamma-glutamyl transpeptidase located on the apical side of proximal tubular cells. Cisplatin affected several pathways including, p53 signalling, Nrf2 mediated oxidative stress response, mitochondrial processes, mTOR and AMPK signalling. In addition, we identified novel pathways changed by cisplatin, including eIF2 signalling, actin nucleation via the ARP/WASP complex and regulation of cell polarization. In conclusion, using an integrated omic approach together with biokinetics we have identified both novel and established mechanisms of cisplatin toxicity.
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Affiliation(s)
- Anja Wilmes
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck, Innsbruck 6020, Austria.
| | - Chris Bielow
- Institute of Computer Science, Department of Mathematics and Computer Science, Freie Universität Berlin, Berlin 14195, Germany
| | - Christina Ranninger
- Department of Molecular Biology, Division of Chemistry and Bioanalytics, University of Salzburg, Salzburg 5020, Austria
| | - Patricia Bellwon
- Department of Toxicology, University of Würzburg, Würzburg 97078, Germany
| | - Lydia Aschauer
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck, Innsbruck 6020, Austria
| | - Alice Limonciel
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck, Innsbruck 6020, Austria
| | - Hubert Chassaigne
- European Commission, Joint Research Centre (JRC), Institute for Health and Consumer Protection, Chemical Assessment and Testing Unit, Via Enrico Fermi 2749, I-21027 Ispra, Italy
| | - Theresa Kristl
- Department of Molecular Biology, Division of Chemistry and Bioanalytics, University of Salzburg, Salzburg 5020, Austria
| | - Stephan Aiche
- Institute of Computer Science, Department of Mathematics and Computer Science, Freie Universität Berlin, Berlin 14195, Germany
| | - Christian G Huber
- Department of Toxicology, University of Würzburg, Würzburg 97078, Germany
| | - Claude Guillou
- European Commission, Joint Research Centre (JRC), Institute for Health and Consumer Protection, Chemical Assessment and Testing Unit, Via Enrico Fermi 2749, I-21027 Ispra, Italy
| | - Philipp Hewitt
- Merck KGaA, Merck Serono, Nonclinical Safety, Darmstadt 64293, Germany
| | - Martin O Leonard
- Centre for Radiation, Chemical and Environmental Hazard, Public Health England, Chilton, Didcot OX11 0RQ, UK
| | - Wolfgang Dekant
- Department of Toxicology, University of Würzburg, Würzburg 97078, Germany
| | - Frederic Bois
- Université de Technologie de Compiègne, Compiègne Cedex 60205, France
| | - Paul Jennings
- Division of Physiology, Department of Physiology and Medical Physics, Medical University of Innsbruck, Innsbruck 6020, Austria
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"The future of in vitro toxicology". Toxicol In Vitro 2014; 29:1217-21. [PMID: 25450745 DOI: 10.1016/j.tiv.2014.08.011] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Revised: 08/04/2014] [Accepted: 08/28/2014] [Indexed: 11/24/2022]
Abstract
In 1959 Russell and Burch stated that "Mammalian tissue cultures have become one of the most important replacement techniques". Although they would likely be disappointed at the slow progress towards the 3Rs, I am sure they would be amazed and excited about the advances made. For example, omic technologies now provide an unbiased holistic view of cellular events and help the development of new mechanistic biomarker sets. New techniques to immortalise cells, such as telomerase overexpression, allow us to create human cell lines without introducing viral oncogenes and thereby provide a source of cells with normal phenotypes. In addition, the truly ground-breaking discovery of inducible pluripotent stem cells allows the possibility of generating target tissues from any individual. There has also been great advances in material science and bio-engineering, creating exciting new microfluidic devices which are well placed for the development of in vitro multi-organ systems. All of these advances have allowed us to better understand the mechanisms of how cells deal with chemical induced cellular perturbations. Utilising this knowledge and these tools, together with biokinetics we can create strategies that will be useful for regulatory purposes. Only in such an integrated interdisciplinary way will we ensure that human in vitro systems become critical toxicological tools, eventually replacing animal models altogether.
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56
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Wilmes A, Jennings P. The Use of Renal Cell Culture for Nephrotoxicity Investigations. METHODS AND PRINCIPLES IN MEDICINAL CHEMISTRY 2014. [DOI: 10.1002/9783527674183.ch10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Wilmes A, Aschauer L, Limonciel A, Pfaller W, Jennings P. Evidence for a role of claudin 2 as a proximal tubular stress responsive paracellular water channel. Toxicol Appl Pharmacol 2014; 279:163-72. [DOI: 10.1016/j.taap.2014.05.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 05/16/2014] [Accepted: 05/27/2014] [Indexed: 01/04/2023]
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Interleukin-19 as a translational indicator of renal injury. Arch Toxicol 2014; 89:101-6. [PMID: 24714768 DOI: 10.1007/s00204-014-1237-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 03/27/2014] [Indexed: 12/19/2022]
Abstract
Accurate detection and prediction of renal injury are central not only to improving renal disease management but also for the development of new strategies to assess drug safety in pre-clinical and clinical testing. In this study, we utilised the well-characterised and differentiated human renal proximal tubule cell line, RPTEC/TERT1 in an attempt to identify markers of renal injury, independent of the mechanism of toxicity. We chose zoledronate as a representative nephrotoxic agent to examine global transcriptomic alterations using a daily repeat bolus protocol over 14 days, reflective of sub-acute or chronic injury. We identified alterations in targets of the cholesterol and mevalonate biosynthetic pathways reflective of zoledronate specific effects. We also identified interleukin-19 (IL-19) among other inflammatory signals such as SERPINA3 and DEFB4 utilising microarray analysis. Release of IL-19 protein was highly induced by an additional four nephrotoxic agents, at magnitudes greater than the characterised marker of renal injury, lipocalin-2. We also demonstrate a large increase in levels of IL-19 in urine of patients with chronic kidney disease, which significantly correlated with estimated glomerular filtration rate levels. We suggest IL-19 as a potential new translational marker of renal injury.
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Tiong HY, Huang P, Xiong S, Li Y, Vathsala A, Zink D. Drug-induced nephrotoxicity: clinical impact and preclinical in vitro models. Mol Pharm 2014; 11:1933-48. [PMID: 24502545 DOI: 10.1021/mp400720w] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The kidney is a major target for drug-induced toxicity. Drug-induced nephrotoxicity remains a major problem in the clinical setting, where the use of nephrotoxic drugs is often unavoidable. This leads frequently to acute kidney injury, and current problems are discussed. One strategy to avoid such problems would be the development of drugs with decreased nephrotoxic potential. However, the prediction of nephrotoxicity during preclinical drug development is difficult and nephrotoxicity is typically detected only late. Also, the nephrotoxic potential of newly approved drugs is often underestimated. Regulatory approved or validated in vitro models for the prediction of nephrotoxicity are currently not available. Here, we will review current approaches on the development of such models. This includes a discussion of three-dimensional and microfluidic models and recently developed stem cell based approaches. Most in vitro models have been tested with a limited number of compounds and are of unclear predictivity. However, some studies have tested larger numbers of compounds and the predictivity of the respective in vitro model had been determined. The results showed that high predictivity can be obtained by using primary or stem cell derived human renal cells in combination with appropriate end points.
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Affiliation(s)
- Ho Yee Tiong
- Yong Loo Lin School of Medicine, National University Health System , 1E Kent Ridge Road, NUHS Tower Block, Singapore 119228, Singapore
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60
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Harreither E, Rydberg HA, Amand HL, Jadhav V, Fliedl L, Benda C, Esteban MA, Pei D, Borth N, Grillari-Voglauer R, Hommerding O, Edenhofer F, Nordén B, Grillari J. Characterization of a novel cell penetrating peptide derived from human Oct4. CELL REGENERATION 2014; 3:2. [PMID: 25408881 PMCID: PMC4230757 DOI: 10.1186/2045-9769-3-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Accepted: 01/23/2014] [Indexed: 12/20/2022]
Abstract
Background Oct4 is a transcription factor that plays a major role for the preservation of the pluripotent state in embryonic stem cells as well as for efficient reprogramming of somatic cells to induced pluripotent stem cells (iPSC) or other progenitors. Protein-based reprogramming methods mainly rely on the addition of a fused cell penetrating peptide. This study describes that Oct4 inherently carries a protein transduction domain, which can translocate into human and mouse cells. Results A 16 amino acid peptide representing the third helix of the human Oct4 homeodomain, referred to as Oct4 protein transduction domain (Oct4-PTD), can internalize in mammalian cells upon conjugation to a fluorescence moiety thereby acting as a cell penetrating peptide (CPP). The cellular distribution of Oct4-PTD shows diffuse cytosolic and nuclear staining, whereas penetratin is strictly localized to a punctuate pattern in the cytoplasm. By using a Cre/loxP-based reporter system, we show that this peptide also drives translocation of a functionally active Oct4-PTD-Cre-fusion protein. We further provide evidence for translocation of full length Oct4 into human and mouse cell lines without the addition of any kind of cationic fusion tag. Finally, physico-chemical properties of the novel CPP are characterized, showing that in contrast to penetratin a helical structure of Oct4-PTD is only observed if the FITC label is present on the N-terminus of the peptide. Conclusions Oct4 is a key transcription factor in stem cell research and cellular reprogramming. Since it has been shown that recombinant Oct4 fused to a cationic fusion tag can drive generation of iPSCs, our finding might contribute to further development of protein-based methods to generate iPSCs. Moreover, our data support the idea that transcription factors might be part of an alternative paracrine signalling pathway, where the proteins are transferred to neighbouring cells thereby actively changing the behaviour of the recipient cell. Electronic supplementary material The online version of this article (doi: 10.1186/2045-9769-3-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Eva Harreither
- Department of Biotechnology, University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria
| | - Hanna A Rydberg
- Department of Chemical and Biological Engineering/Physical Chemistry, Chalmers University of Technology, Kemivägen 10, S-412 96 Gothenburg, Sweden
| | - Helene L Amand
- Department of Chemical and Biological Engineering/Physical Chemistry, Chalmers University of Technology, Kemivägen 10, S-412 96 Gothenburg, Sweden
| | - Vaibhav Jadhav
- Department of Biotechnology, University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria
| | - Lukas Fliedl
- ACIB GmbH, Austrian Center of Industrial Biotechnology, Petersgasse 14, 8010 Graz, Austria
| | - Christina Benda
- Key Laboratory of Regenerative Biology, Chinese Academy of Sciences, and Guangdong Provincial Key Laboratory of Stem Cells and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, 510530 Guangzhou, China
| | - Miguel A Esteban
- Key Laboratory of Regenerative Biology, Chinese Academy of Sciences, and Guangdong Provincial Key Laboratory of Stem Cells and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, 510530 Guangzhou, China
| | - Duanqing Pei
- Key Laboratory of Regenerative Biology, Chinese Academy of Sciences, and Guangdong Provincial Key Laboratory of Stem Cells and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, 510530 Guangzhou, China
| | - Nicole Borth
- Department of Biotechnology, University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria ; ACIB GmbH, Austrian Center of Industrial Biotechnology, Petersgasse 14, 8010 Graz, Austria
| | - Regina Grillari-Voglauer
- Department of Biotechnology, University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria ; Evercyte GmbH, Muthgasse 18, 1190 Vienna, Austria ; ACIB GmbH, Austrian Center of Industrial Biotechnology, Petersgasse 14, 8010 Graz, Austria
| | - Oliver Hommerding
- Stem Cell Engineering Group, Institute of Reconstructive Neurobiology, University of Bonn - Life & Brain Center and Hertie Foundation, Sigmund-Freud Strasse 25, D-53105 Bonn, Germany
| | - Frank Edenhofer
- Stem Cell Engineering Group, Institute of Reconstructive Neurobiology, University of Bonn - Life & Brain Center and Hertie Foundation, Sigmund-Freud Strasse 25, D-53105 Bonn, Germany ; Stem Cell and Regenerative Medicine Group, Institute of Anatomy and Cell Biology, Julius-Maximilians-University Würzburg, Koellikerstrasse 6, D-97070 Würzburg, Germany
| | - Bengt Nordén
- Department of Chemical and Biological Engineering/Physical Chemistry, Chalmers University of Technology, Kemivägen 10, S-412 96 Gothenburg, Sweden
| | - Johannes Grillari
- Department of Biotechnology, University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria ; Evercyte GmbH, Muthgasse 18, 1190 Vienna, Austria ; Christian Doppler Laboratory on Biotechnology of Skin Aging, University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria
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Jennings P, Aschauer L, Wilmes A, Gstraunthaler G. Renal Cell Culture. METHODS IN PHARMACOLOGY AND TOXICOLOGY 2014. [DOI: 10.1007/978-1-4939-0521-8_4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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62
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Leonard MO, Limonciel A, Jennings P. Stress Response Pathways. METHODS IN PHARMACOLOGY AND TOXICOLOGY 2014. [DOI: 10.1007/978-1-4939-0521-8_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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