1
|
Naito Y, Yoshinouchi Y, Sorayama Y, Kohara H, Kitano S, Irie S, Matsusaki M. Constructing vascularized hepatic tissue by cell-assembled viscous tissue sedimentation method and its application for vascular toxicity assessment. Acta Biomater 2022; 140:275-288. [PMID: 34826641 DOI: 10.1016/j.actbio.2021.11.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 10/29/2021] [Accepted: 11/17/2021] [Indexed: 01/09/2023]
Abstract
In vitro Construction of the liver sinusoidal structure using artificial tissue is an important but worthwhile challenge, particularly for assessing the risk of diseases such as sinusoidal obstruction syndrome (SOS). Current models are unsuitable for evaluating the toxicity because of lacking sinusoidal capillary. In this study, we developed a vascularized hepatic tissue (VHT) using a unique tissue engineering technique, the cell assembled viscous tissue by sedimentation (CAViTs) method. The "viscous bodies" created using the CAViTs method exhibited significant self-assembly within 6 h after seeding, promoting cell-cell interaction. The level of albumin secreted by the VHT was four times higher than that of 2D-coculture and maintained for 1 month. The gene expression pattern of the VHT was closer to that of total human liver, compared with the 2D system. Quantitative evaluations of the vascular structure of VHT treated with two typical SOS-inducing compounds, monocrotaline and retrorsine, revealed higher sensitivity (IC50 = 40.35 µM), 19.92 times higher than the cell-viability assay. Thus, VHT represents an innovative in vitro model that mimics the vessel network structure and could become a useful tool for the early screening of compounds associated with a risk of vascular toxicity. STATEMENT OF SIGNIFICANCE: Mimicking sinusoidal structures in in vitro liver model is important to consider from the perspective of predicting hepatotoxicity such like sinusoidal obstruction syndrome (SOS). However, it was difficult to reconstruct the vascular structure within the hepatocyte-rich environment. In this study, we constructed a vascularized hepatic tissue in a high-throughput manner by a unique method using collagen and heparin, and evaluated its applicability to toxicity assessment. Vessel morphology analysis of the model treated by monocrotaline, which is a well-known SOS-inducing compound, could predict the toxicity with higher sensitivity. To the best of our knowledge, this is the first report to provide vascularized hepatic tissues using sinusoidal endothelial cells at least for demonstrating applicability to the evaluation of SOS induction risk.
Collapse
|
2
|
Multifaceted Factors Causing Conflicting Outcomes in Herb-Drug Interactions. Pharmaceutics 2020; 13:pharmaceutics13010043. [PMID: 33396770 PMCID: PMC7824553 DOI: 10.3390/pharmaceutics13010043] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 12/27/2020] [Accepted: 12/28/2020] [Indexed: 12/11/2022] Open
Abstract
Metabolic enzyme and/or transporter-mediated pharmacokinetic (PK) changes in a drug caused by concomitant herbal products have been a primary issue of herb and drug interactions (HDIs), because PK changes of a drug may result in the alternation of efficacy and toxicity. Studies on HDIs have been carried out by predictive in vitro and in vivo preclinical studies, and clinical trials. Nevertheless, the discrepancies between predictive data and the clinical significance on HDIs still exist, and different reports of HDIs add to rather than clarify the confusion regarding the use of herbal products and drug combinations. Here, we briefly review the underlying mechanisms causing PK-based HDIs, and more importantly summarize challenging issues, such as dose and treatment period effects, to be considered in study designs and interpretations of HDI evaluations.
Collapse
|
3
|
Ribeiro AJS, Yang X, Patel V, Madabushi R, Strauss DG. Liver Microphysiological Systems for Predicting and Evaluating Drug Effects. Clin Pharmacol Ther 2019; 106:139-147. [PMID: 30993668 PMCID: PMC6771674 DOI: 10.1002/cpt.1458] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 03/26/2019] [Indexed: 12/12/2022]
Abstract
Liver plays a major role in drug metabolism and is one of the main sites of drug adverse effects. Microphysiological systems (MPS), also known as organs‐on‐a‐chip, are a class of microfluidic platforms that recreate properties of tissue microenvironments. Among different properties, the liver microenvironment is three‐dimensional, fluid flows around its cells, and different cell types regulate its function. Liver MPS aim to recreate these properties and enable drug testing and measurement of functional endpoints. Tests with these systems have demonstrated their potential for predicting clinical drug effects. Properties of liver MPS that improve the physiology of cell culture are reviewed, specifically focusing on the importance of recreating a physiological microenvironment to evaluate and model drug effects. Advances in modeling hepatic function by leveraging MPS are addressed, noting the need for standardization in the use, quality control, and interpretation of data from these systems.
Collapse
Affiliation(s)
- Alexandre J S Ribeiro
- Division of Applied Regulatory Science, Office of Translational Science, Office of Clinical Pharmacology, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, Maryland, USA
| | - Xinning Yang
- Office of Clinical Pharmacology, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, Maryland, USA
| | - Vikram Patel
- Division of Applied Regulatory Science, Office of Translational Science, Office of Clinical Pharmacology, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, Maryland, USA
| | - Rajnikanth Madabushi
- Office of Clinical Pharmacology, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, Maryland, USA
| | - David G Strauss
- Division of Applied Regulatory Science, Office of Translational Science, Office of Clinical Pharmacology, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, Maryland, USA.,Office of Clinical Pharmacology, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, Maryland, USA
| |
Collapse
|
4
|
Expression of cytochrome P450 epoxygenases and soluble epoxide hydrolase is regulated by hypolipidemic drugs in dose-dependent manner. Toxicol Appl Pharmacol 2018; 355:156-163. [DOI: 10.1016/j.taap.2018.06.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 06/25/2018] [Accepted: 06/26/2018] [Indexed: 01/30/2023]
|
5
|
Rattanapisit K, Abdulheem S, Chaikeawkaew D, Kubera A, Mason HS, Ma JKC, Pavasant P, Phoolcharoen W. Recombinant human osteopontin expressed in Nicotiana benthamiana stimulates osteogenesis related genes in human periodontal ligament cells. Sci Rep 2017; 7:17358. [PMID: 29229947 PMCID: PMC5725595 DOI: 10.1038/s41598-017-17666-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 11/29/2017] [Indexed: 01/08/2023] Open
Abstract
Tissue engineering aims to utilise biologic mediators to facilitate tissue regeneration. Several recombinant proteins have potential to mediate induction of bone production, however, the high production cost of mammalian cell expression impedes patient access to such treatments. The aim of this study is to produce recombinant human osteopontin (hOPN) in plants for inducing dental bone regeneration. The expression host was Nicotiana benthamiana using a geminiviral vector for transient expression. OPN expression was confirmed by Western blot and ELISA, and OPN was purified using Ni affinity chromatography. Structural analysis indicated that plant-produced hOPN had a structure similar to commercial HEK cell-produced hOPN. Biological function of the plant-produced hOPN was also examined. Human periodontal ligament stem cells were seeded on an OPN-coated surface. The results indicated that cells could grow normally on plant-produced hOPN as compared to commercial HEK cell-produced hOPN determined by MTT assay. Interestingly, increased expression of osteogenic differentiation-related genes, including OSX, DMP1, and Wnt3a, was observed by realtime PCR. These results show the potential of plant-produced OPN to induce osteogenic differentiation of stem cells from periodontal ligament in vitro, and suggest a therapeutic strategy for bone regeneration in the future.
Collapse
Affiliation(s)
- Kaewta Rattanapisit
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand
| | - Supaniga Abdulheem
- Research Unit of Mineralized Tissue, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Daneeya Chaikeawkaew
- Research Unit of Mineralized Tissue, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Anchanee Kubera
- Department of Genetics, Faculty of Sciences, Kasetsart University, Bangkok, Thailand
| | - Hugh S Mason
- Biodesign Institute Center for Immunotherapy, Vaccines, and Virotherapy, and School of Life Sciences, Arizona State University, Tempe, AZ, 85287-4501, USA
| | - Julian K-C Ma
- The Institute for Infection and Immunity, St. George's, University of London, London, UK
| | - Prasit Pavasant
- Research Unit of Mineralized Tissue, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Waranyoo Phoolcharoen
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand.
| |
Collapse
|
6
|
Ma BL, Ma YM. Pharmacokinetic herb–drug interactions with traditional Chinese medicine: progress, causes of conflicting results and suggestions for future research. Drug Metab Rev 2016; 48:1-26. [DOI: 10.3109/03602532.2015.1124888] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
7
|
Thomas M, Winter S, Klumpp B, Turpeinen M, Klein K, Schwab M, Zanger UM. Peroxisome proliferator-activated receptor alpha, PPARα, directly regulates transcription of cytochrome P450 CYP2C8. Front Pharmacol 2015; 6:261. [PMID: 26582990 PMCID: PMC4631943 DOI: 10.3389/fphar.2015.00261] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 10/22/2015] [Indexed: 12/11/2022] Open
Abstract
The cytochrome P450, CYP2C8, metabolizes more than 60 clinically used drugs as well as endogenous substances including retinoic acid and arachidonic acid. However, predictive factors for interindividual variability in the efficacy and toxicity of CYP2C8 drug substrates are essentially lacking. Recently we demonstrated that peroxisome proliferator-activated receptor alpha (PPARα), a nuclear receptor primarily involved in control of lipid and energy homeostasis directly regulates the transcription of CYP3A4. Here we investigated the potential regulation of CYP2C8 by PPARα. Two linked intronic SNPs in PPARα (rs4253728, rs4823613) previously associated with hepatic CYP3A4 status showed significant association with CYP2C8 protein level in human liver samples (N = 150). Furthermore, siRNA-mediated knock-down of PPARα in HepaRG human hepatocyte cells resulted in up to ∼60 and ∼50% downregulation of CYP2C8 mRNA and activity, while treatment with the PPARα agonist WY14,643 lead to an induction by >150 and >100%, respectively. Using chromatin immunoprecipitation scanning assay we identified a specific upstream gene region that is occupied in vivo by PPARα. Electromobility shift assay demonstrated direct binding of PPARα to a DR-1 motif located at positions –2762/–2775 bp upstream of the CYP2C8 transcription start site. We further validated the functional activity of this element using luciferase reporter gene assays in HuH7 cells. Moreover, based on our previous studies we demonstrated that WNT/β-catenin acts as a functional inhibitor of PPARα-mediated inducibility of CYP2C8 expression. In conclusion, our data suggest direct involvement of PPARα in both constitutive and inducible regulation of CYP2C8 expression in human liver, which is further modulated by WNT/β-catenin pathway. PPARA gene polymorphism could have a modest influence on CYP2C8 phenotype.
Collapse
Affiliation(s)
- Maria Thomas
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology Stuttgart, Germany ; University of Tuebingen Tuebingen, Germany
| | - Stefan Winter
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology Stuttgart, Germany ; University of Tuebingen Tuebingen, Germany
| | - Britta Klumpp
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology Stuttgart, Germany ; University of Tuebingen Tuebingen, Germany
| | - Miia Turpeinen
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology Stuttgart, Germany ; University of Tuebingen Tuebingen, Germany
| | - Kathrin Klein
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology Stuttgart, Germany ; University of Tuebingen Tuebingen, Germany
| | - Matthias Schwab
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology Stuttgart, Germany ; University of Tuebingen Tuebingen, Germany ; Department of Clinical Pharmacology, University Hospital Tuebingen Tuebingen, Germany
| | - Ulrich M Zanger
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology Stuttgart, Germany ; University of Tuebingen Tuebingen, Germany
| |
Collapse
|
8
|
Finkbeiner S, Frumkin M, Kassner PD. Cell-based screening: extracting meaning from complex data. Neuron 2015; 86:160-74. [PMID: 25856492 PMCID: PMC4457442 DOI: 10.1016/j.neuron.2015.02.023] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 09/23/2014] [Accepted: 01/22/2015] [Indexed: 01/23/2023]
Abstract
Unbiased discovery approaches have the potential to uncover neurobiological insights into CNS disease and lead to the development of therapies. Here, we review lessons learned from imaging-based screening approaches and recent advances in these areas, including powerful new computational tools to synthesize complex data into more useful knowledge that can reliably guide future research and development.
Collapse
Affiliation(s)
- Steven Finkbeiner
- Director of the Taube/Koret Center for Neurodegenerative Disease and the Hellman Family Foundation Program in Alzheimer's Disease Research, Gladstone Institute of Neurological Disease, San Francisco, CA 94158, USA; Departments of Neurology and Physiology, University of California, San Francisco, San Francisco, CA 94143, USA.
| | - Michael Frumkin
- Director of Engineering, Research, Google, Inc., 1600 Amphitheatre Parkway, Mountain View, CA 94043, USA
| | - Paul D Kassner
- Director of Research, Amgen, Inc., 1120 Veterans Boulevard South, San Francisco, CA 94080, USA
| |
Collapse
|
9
|
Okyere J, Oppon E, Dzidzienyo D, Sharma L, Ball G. Cross-species gene expression analysis of species specific differences in the preclinical assessment of pharmaceutical compounds. PLoS One 2014; 9:e96853. [PMID: 24823806 PMCID: PMC4019543 DOI: 10.1371/journal.pone.0096853] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Accepted: 04/11/2014] [Indexed: 01/11/2023] Open
Abstract
Animals are frequently used as model systems for determination of safety and efficacy in pharmaceutical research and development. However, significant quantitative and qualitative differences exist between humans and the animal models used in research. This is as a result of genetic variation between human and the laboratory animal. Therefore the development of a system that would allow the assessment of all molecular differences between species after drug exposure would have a significant impact on drug evaluation for toxicity and efficacy. Here we describe a cross-species microarray methodology that identifies and selects orthologous probes after cross-species sequence comparison to develop an orthologous cross-species gene expression analysis tool. The assumptions made by the use of this orthologous gene expression strategy for cross-species extrapolation is that; conserved changes in gene expression equate to conserved pharmacodynamic endpoints. This assumption is supported by the fact that evolution and selection have maintained the structure and function of many biochemical pathways over time, resulting in the conservation of many important processes. We demonstrate this cross-species methodology by investigating species specific differences of the peroxisome proliferator-activator receptor (PPAR) α response in rat and human.
Collapse
Affiliation(s)
- John Okyere
- CrossGen Limited, BioCity Nottingham, Pennyfoot Street, Nottingham, United Kingdom
- * E-mail:
| | - Ekow Oppon
- CrossGen Limited, BioCity Nottingham, Pennyfoot Street, Nottingham, United Kingdom
| | - Daniel Dzidzienyo
- CrossGen Limited, BioCity Nottingham, Pennyfoot Street, Nottingham, United Kingdom
| | - Lav Sharma
- CrossGen Limited, BioCity Nottingham, Pennyfoot Street, Nottingham, United Kingdom
| | - Graham Ball
- John Van Geest Cancer Research Centre, Nottingham Trent University, Clifton Campus, Clifton Lane, Nottingham, United Kingdom
| |
Collapse
|
10
|
Seo BR, DelNero P, Fischbach C. In vitro models of tumor vessels and matrix: engineering approaches to investigate transport limitations and drug delivery in cancer. Adv Drug Deliv Rev 2014; 69-70:205-216. [PMID: 24309015 DOI: 10.1016/j.addr.2013.11.011] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 11/14/2013] [Accepted: 11/24/2013] [Indexed: 12/12/2022]
Abstract
Tumor-stroma interactions have emerged as critical determinants of drug efficacy. However, the underlying biological and physicochemical mechanisms by which the microenvironment regulates therapeutic response remain unclear, due in part to a lack of physiologically relevant in vitro platforms to accurately interrogate tissue-level phenomena. Tissue-engineered tumor models are beginning to address this shortcoming. By allowing selective incorporation of microenvironmental complexity, these platforms afford unique access to tumor-associated signaling and transport dynamics. This review will focus on engineering approaches to study drug delivery as a function of tumor-associated changes of the vasculature and extracellular matrix (ECM). First, we review current biological understanding of these components and discuss their impact on transport processes. Then, we evaluate existing microfluidic, tissue engineering, and materials science strategies to recapitulate vascular and ECM characteristics of tumors, and finish by outlining challenges and future directions of the field that may ultimately improve anti-cancer therapies.
Collapse
|
11
|
Parmentier C, Truisi GL, Moenks K, Stanzel S, Lukas A, Kopp-Schneider A, Alexandre E, Hewitt PG, Mueller SO, Richert L. Transcriptomic hepatotoxicity signature of chlorpromazine after short- and long-term exposure in primary human sandwich cultures. Drug Metab Dispos 2013; 41:1835-42. [PMID: 23913027 DOI: 10.1124/dmd.113.052415] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Drug-induced liver injury is the most frequent reason for market withdrawal of approved drugs, and is difficult to predict in animal models. Here, we analyzed transcriptomic data derived from short- and long-term cultured primary human hepatocytes (PHH) exposed to the well known human hepatotoxin chlorpromazine (CPZ). Samples were collected from five PHH cultures after short-term (1 and 3 days) and long-term (14 days) repeat daily treatment with 0.1 or 0.2 µM CPZ, corresponding to C(max). Two PHH cultures were additionally treated with 1 µM CPZ, and the three others with 0.02 µM CPZ. Differences in the total number of gene changes were seen between donors and throughout treatment. Specific transcriptomic hepatotoxicity signatures were created for CPZ and consisted of inflammation/hepatitis, cholestasis, and liver proliferation in all five donors, as well as fibrosis and steatosis, which were observed in four of five donors. Necrosis was present in three of five donors, and an indicative signature of cirrhosis was observed after long-term 14-day repeat treatment, also in three of five donors. The inter-donor variability in the inflammatory response to CPZ treatment was associated with variability in the strength of the response of the transcriptomic hepatotoxicity signatures, suggesting that features of inflammation could be related to the idiosyncratic hepatotoxic effects of CPZ in humans.
Collapse
Affiliation(s)
- Céline Parmentier
- KaLy-Cell, Plobsheim, France (C.P., E.A., L.R.); Non-Clinical Safety, Merck Serono, Merck KGaA, Darmstadt, Germany (G.L.T., P.G.H., S.O.M.); Emergentec Biodevelopment GmbH, Vienna, Austria (K.M., A.L.); Department of Biostatistics, German Cancer Research Center, Heidelberg, Germany (S.S., A.K.-S.); Institut für Angewandte Biowissenschaften, Karlsruhe Institute of Technology, Karlsruhe, Germany (G.L.T., S.O.M.); and Laboratoire de Toxicologie Cellulaire, EA4267 Université de Franche-Comté, Besançon, France (L.R.)
| | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Peroxisome proliferator-activated receptors in regulation of cytochromes P450: new way to overcome multidrug resistance? J Biomed Biotechnol 2012; 2012:656428. [PMID: 23193364 PMCID: PMC3492927 DOI: 10.1155/2012/656428] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Revised: 08/16/2012] [Accepted: 09/17/2012] [Indexed: 01/19/2023] Open
Abstract
Embryonic and tumour cells are able to protect themselves against various harmful compounds. In human pathology, this phenomenon exists in the form of multidrug resistance (MDR) that significantly deteriorates success of anticancer treatment. Cytochromes P450 (CYPs) play one of the key roles in the xenobiotic metabolism. CYP expression could contribute to resistance of cancer cells to chemotherapy. CYP epoxygenases (CYP2C and CYP2J) metabolize about 20% of clinically important drugs. Besides of drug metabolism, CYP epoxygenases and their metabolites play important role in embryos, normal body function, and tumors. They participate in angiogenesis, mitogenesis, and cell signaling. It was found that CYP epoxygenases are affected by peroxisome proliferator-activated receptor α (PPARα). Based on the results of current studies, we assume that PPARs ligands may regulate CYP2C and CYP2J and in some extent they may contribute to overcoming of MDR in patients with different types of tumours.
Collapse
|
13
|
Miao Z, Scott DO, Griffith DA, Day R, Prakash C. Excretion, metabolism, and pharmacokinetics of CP-945,598, a selective cannabinoid receptor antagonist, in rats, mice, and dogs. Drug Metab Dispos 2011; 39:2191-208. [PMID: 21875952 DOI: 10.1124/dmd.111.040360] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
1-(8-(2-Chlorophenyl)-9-(4-chlorophenyl)-9H-purin-6-yl)-4-(ethylamino)piperidine-4-carboxamide (CP-945,598) is an orally active antagonist of the cannabinoid CB-1 receptor that progressed into phase 3 human clinical trials for the treatment of obesity. In this study, we investigated the metabolic fate and disposition of CP-945,598 in rats, Tg-RasH2 mice, and dogs after oral administration of a single dose of [(14)C]CP-945,598. Total mean recoveries of the radioactive dose were 97.7, 97.8, and 99.3% from mice, rats, and dogs, respectively. The major route of excretion in all three species was via the feces, but on the basis of separate studies in bile duct-cannulated rats and dogs, this probably reflects excretion in bile rather than incomplete absorption. CP-945,598 underwent extensive metabolism in all three species, because no unchanged parent compound was detected in the urine across species. The primary metabolic pathway of CP-945,598 involved N-deethylation to form an N-desethyl metabolite (M1). M1 was subsequently metabolized by amide hydrolysis, oxidation, and ribose conjugation to numerous novel and unusual metabolites. The major circulating and excretory metabolites were species-dependent; however, several common metabolites were observed in more than one species. In addition to parent compound, M1, M3, M4, and M5 in rats, M1, M3, and M4 in mice, and M1 and M2 in dogs were identified as the major circulating metabolites. Gender-related differences were also apparent in the quantitative and qualitative nature of the metabolites in rats. An unprecedented metabolite, M4, formed by deamidation of M1 or M3 (N-hydroxy-M1), but not by decarboxylation of M2, was identified in all species. M4 was nonenzymatically converted to M5.
Collapse
Affiliation(s)
- Zhuang Miao
- Pharmacokinetics, Dynamics, and Metabolism Department, Pfizer Global Research and Development, Groton, CT 06340, USA.
| | | | | | | | | |
Collapse
|
14
|
Mandenius CF, Andersson TB, Alves PM, Batzl-Hartmann C, Björquist P, Carrondo MJ, Chesne C, Coecke S, Edsbagge J, Fredriksson JM, Gerlach JC, Heinzle E, Ingelman-Sundberg M, Johansson I, Küppers-Munther B, Müller-Vieira U, Noor F, Zeilinger K. Toward Preclinical Predictive Drug Testing for Metabolism and Hepatotoxicity by Using In Vitro Models Derived from Human Embryonic Stem Cells and Human Cell Lines — A Report on the Vitrocellomics EU-project. Altern Lab Anim 2011; 39:147-71. [DOI: 10.1177/026119291103900210] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Drug-induced liver injury is a common reason for drug attrition in late clinical phases, and even for post-launch withdrawals. As a consequence, there is a broad consensus in the pharmaceutical industry, and within regulatory authorities, that a significant improvement of the current in vitro test methodologies for accurate assessment and prediction of such adverse effects is needed. For this purpose, appropriate in vivo-like hepatic in vitro models are necessary, in addition to novel sources of human hepatocytes. In this report, we describe recent and ongoing research toward the use of human embryonic stem cell (hESC)-derived hepatic cells, in conjunction with new and improved test methods, for evaluating drug metabolism and hepatotoxicity. Recent progress on the directed differentiation of human embryonic stem cells to the functional hepatic phenotype is reported, as well as the development and adaptation of bioreactors and toxicity assay technologies for the testing of hepatic cells. The aim of achieving a testing platform for metabolism and hepatotoxicity assessment, based on hESC-derived hepatic cells, has advanced markedly in the last 2–3 years. However, great challenges still remain, before such new test systems could be routinely used by the industry. In particular, we give an overview of results from the Vitrocellomics project (EU Framework 6) and discuss these in relation to the current state-of-the-art and the remaining difficulties, with suggestions on how to proceed before such in vitro systems can be implemented in industrial discovery and development settings and in regulatory acceptance.
Collapse
Affiliation(s)
| | - Tommy B. Andersson
- Karolinska Institute, Department of Physiology and Pharmacology, Stockholm, Sweden
- Development DMPK & Bioanalysis, AstraZeneca R&D, Mölndal, Sweden
| | | | | | | | | | | | - Sandra Coecke
- ECVAM, Institute for Health and Consumer Protection, European Commission Joint Research Centre, Ispra, Italy
| | | | | | - Jörg C. Gerlach
- Experimental Surgery, Charité Universitätsmedizin, Berlin, Germany
| | - Elmar Heinzle
- Biochemical Engineering, Saarland University, Saarbrücken, Germany
| | | | - Inger Johansson
- Karolinska Institute, Department of Physiology and Pharmacology, Stockholm, Sweden
| | | | | | - Fozia Noor
- Biochemical Engineering, Saarland University, Saarbrücken, Germany
| | - Katrin Zeilinger
- Experimental Surgery, Charité Universitätsmedizin, Berlin, Germany
| |
Collapse
|
15
|
Fery Y, Mueller SO, Schrenk D. Development of stably transfected human and rat hepatoma cell lines for the species-specific assessment of xenobiotic response enhancer module (XREM)-dependent induction of drug metabolism. Toxicology 2010; 277:11-9. [PMID: 20832446 DOI: 10.1016/j.tox.2010.08.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Revised: 08/11/2010] [Accepted: 08/13/2010] [Indexed: 11/15/2022]
Abstract
Based on our current knowledge, PXR holds a key position in the induction of a selective battery of enzymes and transporters of drug metabolism. In order to prevent serious adverse drug effects or unpredicted drug-drug interactions (DDI), it is compulsory to investigate the possible inducing potency of drugs under development. Furthermore, analysis of the inducing potency of environmental pollutants and new or manufactured chemicals is part of toxicological risk assessment. In non-transfected human HepG2 and rat H4IIE hepatoma cells, we examined the characteristics of expression of 45 genes involved in drug metabolism. A few gene products such as CYP2B6 or CYP3A4 mRNA were prominent in HepG2 cells while their major rat counterparts were, e.g., CYP2B3 or CYP3A1/3A3. Furthermore, a number of xenobiotic receptors including PXR were expressed in both cell lines. A number of genes were regulated in a cell type and species-specific manner after incubation with the prototypical PXR agonists rifampicin or dexamethasone, respectively. Then, we established cell-based reporter gene assays for screening for PXR-dependent induction of drug metabolism. HepG2 and H4IIE cells were stably transfected with a reporter gene containing PXR responsive elements (XREMs) which mediate the induction of PXR target genes such as CYP3A enzymes. With both stable cell lines the CYP inducers clotrimazole, dexamethasone, omeprazole, phenobarbital, rifampicin, as well as the drug candidate EMD 392949 and the brominated flame retardants hexabromocylododecane (HBCD) and a pentabromodiphenyl ether (pentaBDE) mixture were screened. In the human HepG2-XREM3 and rat H4IIE-XREM3 cells, clotrimazole and HBCD were found as common activators of the human and rat PXR whereas pentaBDE was more effective with the human cell system. Omeprazole and phenobarbital did not induce the rat PXR-dependent reporter gene expression in H4IIE-XREM3 cells, while a moderate increase was found in HepG2-XREM3 cells. EMD 392949 also acted as inducer in human but not in rat cells confirming in vivo observations. In summary, the established PXR-dependent in vitro system allows the simultaneous, fast, and species-specific screening of chemicals, environmental contaminants, food ingredients and drugs for CYP3A induction in cells of human and rat origin.
Collapse
Affiliation(s)
- Yvonne Fery
- Food Chemistry and Toxicology, University of Kaiserslautern, Erwin-Schroedinger-Strasse 52, D-67663 Kaiserslautern, Germany
| | | | | |
Collapse
|
16
|
Boehme K, Dietz Y, Hewitt P, Mueller SO. Activation of P53 in HepG2 cells as surrogate to detect mutagens and promutagens in vitro. Toxicol Lett 2010; 198:272-81. [PMID: 20655369 DOI: 10.1016/j.toxlet.2010.07.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2010] [Revised: 07/10/2010] [Accepted: 07/14/2010] [Indexed: 01/03/2023]
Abstract
The current genotoxicity tests of the standard in vitro battery, especially those using mammalian cells, are limited by their low specificity and highlight the importance of new in vitro tools. This study aimed to evaluate the suitability of HepG2 cells for assaying mutagens and promutagens. We determined P53 activity as surrogate genotoxicity endpoint in HepG2 cells. Our results revealed a significant P53-induction by actinomycin D, methyl methanesulfonate and etoposide. Prior to the investigation of promutagens we characterized HepG2 cells by analyzing the expression of 45 genes involved in xenobiotic metabolism and measuring the activity of selected Cytochrome-P450 (CYP) enzymes. We determined a limited metabolic capacity prompting us to employ a co-treatment with rat liver S9 as metabolic activation system (MAS) for promutagens. While cyclophosphamide showed an elevation of activated P53 in the presence of S9, 7,12-dimethylbenz[a]anthracene and aflatoxin B(1) responded without the MAS. Inhibition of cellular CYP3A4 or CYP1A/1B suppressed the aflatoxin B(1)- and dimethylbenz[a]anthracene-mediated P53 response, respectively, indicating that HepG2 cells are capable of metabolizing these compounds in a CYP1A/B/3A4-dependent manner. In summary, our results indicate that P53 activation in HepG2 cells combined with a MAS can be used for the identification of new (pro)genotoxicants.
Collapse
Affiliation(s)
- Kathleen Boehme
- Merck KGaA, Merck Serono, Toxicology, 64293 Darmstadt, Germany
| | | | | | | |
Collapse
|
17
|
Maronpot RR, Yoshizawa K, Nyska A, Harada T, Flake G, Mueller G, Singh B, Ward JM. Hepatic Enzyme Induction. Toxicol Pathol 2010; 38:776-95. [DOI: 10.1177/0192623310373778] [Citation(s) in RCA: 128] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Hepatic enzyme induction is generally an adaptive response associated with increases in liver weight, induction of gene expression, and morphological changes in hepatocytes. The additive growth and functional demands that initiated the response to hepatic enzyme induction cover a wide range of stimuli including pregnancy and lactation, hormonal fluctuations, dietary constituents, infections associated with acute-phase proteins, as well as responses to exposure to xenobiotics. Common xenobiotic enzyme inducers trigger pathways involving the constitutive androstane receptor (CAR), the peroxisome proliferator-activated receptor (PPAR), the aryl hydrocarbon receptor (AhR), and the pregnane-X-receptor (PXR). Liver enlargement in response to hepatic enzyme induction is typically associated with hepatocellular hypertrophy and often, transient hepatocyte hyperplasia. The hypertrophy may show a lobular distribution, with the pattern of lobular zonation and severity reflecting species, strain, and sex differences in addition to effects from specific xenobiotics. Toxicity and hepatocarcinogenicity may occur when liver responses exceed adaptive changes or induced enzymes generate toxic metabolites. These undesirable consequences are influenced by the type and dose of xenobiotic and show considerable species differences in susceptibility and severity that need to be understood for assessing the potential effects on human health from similar exposures to specific xenobiotics.
Collapse
Affiliation(s)
| | | | | | | | - Gordon Flake
- National Institute for Environmental Health Sciences, Research Triangle Park, North Carolina, USA
| | | | - Bhanu Singh
- DuPont Haskell Global Centers for Health and Environmental Science, Newark, Delaware, USA
| | | |
Collapse
|
18
|
Species-specific activation of nuclear receptors correlates with the response of liver drug metabolizing enzymes to EMD 392949 in vitro. Toxicol Lett 2009; 193:120-3. [PMID: 20035846 DOI: 10.1016/j.toxlet.2009.12.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2009] [Revised: 12/15/2009] [Accepted: 12/17/2009] [Indexed: 01/06/2023]
Abstract
We previously reported on the species-specific effects on drug metabolizing enzymes (DME), in particular cytochrome P450-dependent monooxygenases (P450s), by the drug development candidate EMD 392949 (EMD) in vitro and in vivo. Induction of P450s occurs via activation of specific transcription factors such as the arylhydrocarbon receptor (AhR) and the nuclear xenobiotic receptors (NXRs). We analyzed whether the reported species-specific P450 induction by EMD could be related to a specific activation of the CYP1A regulator AhR and the CYP3A regulator pregnane X receptor (PXR) in human and rat cell lines. The human HepG2 and rat H4IIE cell lines exhibited inducibility of CYP1A and 3A and expressed functional AhR as well as PXR. CYP3A was induced by EMD in human HepG2 cells exceeding the level induced by rifampicin, but was not induced in rat H4IIE cells. Regulation of P450s was not related to expression levels of their respective transcription factor, but EMD treatment resulted in a significant reporter gene activation in xenobiotic response enhancer module (XREM)-transfected HepG2 but not H4IIE cells indicating activation of human but not rat PXR. In summary, we showed that the P450 inducing properties of EMD were perfectly reflected by its ability to activate AhR or PXR in a species-specific manner. These findings support the tight correlation of species-specific nuclear receptor activation with P450 induction and foster the use of nuclear receptor activation as a complementary screen to identify cytochrome P450 inducers.
Collapse
|
19
|
Richert L, Abadie C, Bonet A, Heyd B, Mantion G, Alexandre E, Bachellier P, Kingston S, Pattenden C, Illouz S, Dennison A, Hoffmann S, Coecke S. Inter-laboratory evaluation of the response of primary human hepatocyte cultures to model CYP inducers - a European Centre for Validation of Alternative Methods (ECVAM) - funded pre-validation study. Toxicol In Vitro 2009; 24:335-45. [PMID: 19497361 DOI: 10.1016/j.tiv.2009.05.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2009] [Revised: 05/02/2009] [Accepted: 05/25/2009] [Indexed: 10/20/2022]
Abstract
The aim of the current work was to harmonise protocols between three laboratories by performing independent isolations and cultures of human hepatocytes and to assess their responses to prototypical cytochrome P450 (CYP) enzyme inducers, beta-naphthoflavone (BNF), rifampicin (RIF) or phenobarbital (PB). The magnitudes of the induction responses were CYP and donor-dependent but there was a good reproducibility between laboratories. CYP1A2 activity was evident in all cultures treated with BNF but not RIF or PB. Likewise, CYP3A4/5 activity was induced to the same extent by RIF and PB, while BNF did not affect this CYP in any of the cultures tested. All three compounds caused a concentration-dependent increase in CYP2B6 in cultures from 2 of the 3 laboratories and the response to PB was at least twice that of the other two inducers. In conclusion, the harmonised protocols used to study the response of primary cultures of human hepatocytes to prototypical inducers are transferable, reproducible within a given laboratory and between laboratories. The results obtained will support setting up a definitive validation study of the harmonised protocols.
Collapse
Affiliation(s)
- Lysiane Richert
- Laboratoire de Toxicologie Cellulaire, EA 2SBP, IFR 133, Faculté de Médecine et de Pharmacie, Besançon, France.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Serum-free collagen sandwich cultures of adult rat hepatocytes maintain liver-like properties long term: a valuable model for in vitro toxicity and drug-drug interaction studies. Chem Biol Interact 2009; 181:124-37. [PMID: 19482013 DOI: 10.1016/j.cbi.2009.05.015] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2009] [Revised: 05/21/2009] [Accepted: 05/22/2009] [Indexed: 12/29/2022]
Abstract
Cultures of primary hepatocytes from various species, including human, are used in several applications during pre-clinical drug development. Their use is however limited by cell survival and conservation of liver-specific functions in vitro. The differentiation status of hepatocytes in culture strongly depends on medium formulation and the extracellular matrix environment. We incubated primary rat hepatocytes for 10 days on collagen monolayer and in collagen sandwich cultures with or without serum. Restoration of polygonal cell shape and formation of functional bile canaliculi-like structures was stable only in serum-free sandwich cultures. Variations in general cell viability, as judged by the cellular ATP content, LDH release or apoptosis, were less pronounced between alternative cultures. The intracellular glutathione content was preserved close to in vivo levels especially in serum-free sandwich cultures. Basal activities of cytochrome P450 enzymes (P450) varied strongly between cultures. There was a minor effect on CYP1A but CYP2B activity was only detectable in the serum-free sandwich culture after 3 days and beyond. CYP2C activity was slightly elevated in both sandwich cultures, whereas CYP3A showed increased levels in both serum-free cultures. Inducibility of these P450s was fully maintained over time in serum-free collagen sandwich only. Gene expression was largely constant over time in serum-free sandwich cultures that was closest to liver. This liver-like property was supported by protein profiling results. Taken together, the serum-free collagen sandwich culture of primary rat hepatocytes maintained liver-like features over 10 days and is therefore a suitable model for long-term toxicity and drug-drug interaction studies.
Collapse
|
21
|
Richert L, Tuschl G, Abadie C, Blanchard N, Pekthong D, Mantion G, Weber JC, Mueller S. Use of mRNA expression to detect the induction of drug metabolising enzymes in rat and human hepatocytes. Toxicol Appl Pharmacol 2009; 235:86-96. [DOI: 10.1016/j.taap.2008.11.019] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2008] [Accepted: 11/17/2008] [Indexed: 12/22/2022]
|
22
|
Tuschl G, Lauer B, Mueller SO. Primary hepatocytes as a model to analyze species-specific toxicity and drug metabolism. Expert Opin Drug Metab Toxicol 2008; 4:855-70. [DOI: 10.1517/17425255.4.7.855] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|