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Pereira RFS, de Carvalho CCCR. Optimization of Multiparameters for Increased Yields of Cytochrome B5 in Bioreactors. Molecules 2021; 26:4148. [PMID: 34299423 PMCID: PMC8306036 DOI: 10.3390/molecules26144148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/01/2021] [Accepted: 07/05/2021] [Indexed: 11/26/2022] Open
Abstract
The production of recombinant proteins is gaining increasing importance as the market requests high quality proteins for several applications. However, several process parameters affect both the growth of cells and product yields. This study uses high throughput systems and statistical methods to assess the influence of fermentation conditions in lab-scale bioreactors. Using this methodology, it was possible to find the best conditions to produce cytochrome b5 with recombinant cells of Escherichia coli. Using partial least squares, the height-to-diameter ratio of the bioreactor, aeration rate, and PID controller parameters were found to contribute significantly to the final biomass and cytochrome concentrations. Hence, we could use this information to fine-tune the process parameters, which increased cytochrome production and yield several-fold. Using aeration of 1 vvm, a bioreactor with a height-to-ratio of 2.4 and tuned PID parameters, a production of 72.72 mg/L of cytochrome b5 in the culture media, and a maximum of product to biomass yield of 24.97 mg/g could be achieved.
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Affiliation(s)
- Ricardo F. S. Pereira
- Department of Bioengineering, iBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Carla C. C. R. de Carvalho
- Department of Bioengineering, iBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal;
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
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2
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Chanteux H, Rosa M, Delatour C, Nicolaï J, Gillent E, Dell'Aiera S, Ungell AL. Application of Azamulin to Determine the Contribution of CYP3A4/5 to Drug Metabolic Clearance Using Human Hepatocytes. Drug Metab Dispos 2020; 48:778-787. [PMID: 32532738 DOI: 10.1124/dmd.120.000017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 06/01/2020] [Indexed: 11/22/2022] Open
Abstract
Early determination of CYP3A4/5 contribution to the clearance of new chemical entities is critical to inform on the risk of drug-drug interactions with CYP3A inhibitors and inducers. Several in vitro approaches (recombinant P450 enzymes, correlation analysis, chemical and antibody inhibition in human liver microsomes) are available, but they are usually labor-intensive and/or suffer from specific limitations. In the present study, we have validated the use of azamulin as a specific CYP3A inhibitor in human hepatocytes. Azamulin (3 µM) was found to significantly inhibit CYP3A4/5 (>90%), whereas other P450 enzymes were not affected (less than 20% inhibition). Because human hepatocytes were used as a test system, the effect of azamulin on other key drug-metabolizing enzymes (aldehyde oxidase, carboxylesterase, UGT, flavin monooxygenase, and sulfotransferase) was also investigated. Apart from some UGTs showing minor inhibition (∼20%-30%), none of these non-P450 enzymes were inhibited by azamulin. Use of CYP3A5-genotyped human hepatocyte batches in combination with CYP3cide demonstrated that azamulin (at 3 µM) inhibits both CYP3A4 and CYP3A5 enzymes. Finally, 11 compounds with known in vivo CYP3A4/5 contribution have been evaluated in this human hepatocyte assay. Results showed that the effect of azamulin on the in vitro intrinsic clearance of these known CYP3A4/5 substrates was predictive of the in vivo CYP3A4/5 contribution. Overall, the study showed that human hepatocytes treated with azamulin provide a fast and accurate estimation of CYP3A4/5 contribution in metabolic clearance of new chemical entities. SIGNIFICANCE STATEMENT: Accurate estimation of CYP3A4/5 contribution in drug clearance is essential to anticipate risk of drug-drug interactions and select the appropriate candidate for clinical development. The present study validated the use of azamulin as selective CYP3A4/5 inhibitor in suspended human hepatocytes and demonstrated that this novel approach provides a direct and accurate determination of the contribution of CYP3A4/5 (fraction metabolized by CYP3A4/5) in the metabolic clearance of new chemical entities.
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Affiliation(s)
| | - Maria Rosa
- UCB Biopharma SRL, Braine-l'Alleud, Belgium
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3
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Morita K, Kato M, Kudo T, Ito K. In vitro-in vivo extrapolation of metabolic clearance using human liver microsomes: factors showing variability and their normalization. Xenobiotica 2020; 50:1064-1075. [PMID: 32125203 DOI: 10.1080/00498254.2020.1738592] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
In vitro-in vivo extrapolation (IVIVE) using human liver microsomes has been widely used to predict metabolic clearance, but some of the factors used in the process of prediction show variability for the same compound: notably, microsomal intrinsic clearance values corrected by the unbound fraction (CLint, u), physiological parameters used for scale-up, and the source of in vivo clearance data.The purpose of this study was to assess the correlation between in vitro and in vivo CLint with a focus on factors showing variability using four cytochrome P450 (CYP)3A substrates.We surveyed in vivo clearance values in literature and also determined the microsomal CLint, u values. A scaling factor (SFdirect) was defined as in vivo CLint divided by the microsomal CLint, u, which ranged from 1190 to 2310 (mg protein per kg body weight). The application of a mean SFdirect of 1600 (mg protein per kg body weight) and further normalization by the microsomal CLint, u values of midazolam, the most commonly used substrate, resulted in improved prediction accuracy for CLint, u values from various microsomal batches.The results suggest the normalization of variability might be useful for predicting the in vivo CLint.
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Affiliation(s)
- Keiichi Morita
- Research Institute of Pharmaceutical Sciences, Musashino University, Tokyo, Japan.,Translational Research Division, Chugai Pharmaceutical, Co., Ltd, Kanagawa, Japan
| | - Motohiro Kato
- Research Division, Chugai Pharmaceutical, Co., Ltd, Shizuoka, Japan
| | - Toshiyuki Kudo
- Research Institute of Pharmaceutical Sciences, Musashino University, Tokyo, Japan
| | - Kiyomi Ito
- Research Institute of Pharmaceutical Sciences, Musashino University, Tokyo, Japan
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Tres F, Posada MM, Hall SD, Mohutsky MA, Taylor LS. The Effect of Promiscuous Aggregation on in Vitro Drug Metabolism Assays. Pharm Res 2019; 36:170. [PMID: 31654151 DOI: 10.1007/s11095-019-2713-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 10/09/2019] [Indexed: 11/26/2022]
Abstract
PURPOSE Many bioactive molecules show a type of solution phase behavior, termed promiscuous aggregation, whereby at micromolar concentrations, colloidal drug-rich aggregates are formed in aqueous solution. These aggregates are known to be a major cause of false positives and false negatives in select enzymatic high-throughput screening assays. The goal of this study was to investigate the impact of drug-rich aggregates on in vitro drug screening metabolism assays. METHODS Cilnidipine was selected as an aggregate former and its impact on drug metabolism was evaluated against rCYP2D6, rCYP1A2, rCYP2C9 and human liver microsomes. RESULTS The cilnidipine aggregates were shown to non-specifically inhibit multiple cytochrome P450 enzymes with an IC50 comparable with the IC50 of potent model inhibitors. CONCLUSIONS This newly demonstrated mode of "promiscuous inhibition" is of great importance as it can lead to false positives during drug metabolism evaluations and thus it needs to be considered in the future to better predict in vivo drug-drug interactions.
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Affiliation(s)
- Francesco Tres
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, West Lafayette, Indiana, 47907, USA
| | - Maria M Posada
- Drug Disposition, Lilly Research Laboratories, Eli Lilly and Co., Indianapolis, Indiana, 46285, USA
| | - Stephen D Hall
- Drug Disposition, Lilly Research Laboratories, Eli Lilly and Co., Indianapolis, Indiana, 46285, USA
| | - Michael A Mohutsky
- Drug Disposition, Lilly Research Laboratories, Eli Lilly and Co., Indianapolis, Indiana, 46285, USA
| | - Lynne S Taylor
- Department of Industrial and Physical Pharmacy, College of Pharmacy, Purdue University, West Lafayette, Indiana, 47907, USA.
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Visser M, Zaya MJ, Locuson CW, Boothe DM, Merritt DA. Comparison of predicted intrinsic hepatic clearance of 30 pharmaceuticals in canine and feline liver microsomes. Xenobiotica 2018; 49:177-186. [PMID: 29405805 DOI: 10.1080/00498254.2018.1437933] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
1. Known cytochrome P450 (CYP) substrates in humans are used in veterinary medicine, with limited knowledge of the similarity or variation in CYP metabolism. Comparison of canine and feline CYP metabolism via liver microsomes report that human CYP probes and inhibitors demonstrate differing rates of intrinsic clearance (CLint). 2. The purpose of this study was to utilize a high-throughput liver microsome substrate depletion assay, combined with microsomal and plasma protein binding to compare the predicted hepatic clearance (CLhep) of thirty therapeutic agents used off-label in canines and felines, using both the well-stirred and parallel tube models. 3. In canine liver microsomes, 3/30 substrates did not have quantifiable CLint, while midazolam and amitriptyline CLint was too rapid for accurate determination. A CLhep was calculated for 29/30 substrates in feline microsomes. Overall, canine CLhep was faster compared to the feline, with fold differences ranging from 2-20-fold. 4. A comparison between the well-stirred and parallel tube model indicates that the parallel tube model reports a slighter higher CLhep in both species. 5. The differences in CYP metabolism between canine and feline highlight the need for additional research into CYP expression and specificity.
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Affiliation(s)
- Marike Visser
- a VMRD Global Therapeutics, Zoetis , Kalamazoo , MI , USA
| | | | | | - Dawn M Boothe
- d College of Veterinary Medicine, Auburn University , Auburn , AL , USA
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Palacharla RC, Nirogi R, Uthukam V, Manoharan A, Ponnamaneni RK, Kalaikadhiban I. Quantitative in vitro phenotyping and prediction of drug interaction potential of CYP2B6 substrates as victims. Xenobiotica 2017; 48:663-675. [PMID: 28737446 DOI: 10.1080/00498254.2017.1354267] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
1. Determination of fm, CYP for a compound is critical to assess the potential risk of a drug candidate as a victim of DDI. Several compounds are identified as CYP2B6 substrates, but the fm, CYP2B6 values are not determined quantitatively. 2. Two methods of reaction phenotyping, the chemical inhibition method and metabolism in rCYP enzymes, were used to determine the relative contributions of the enzymes. Chemical inhibition method was also conducted in the presence of BSA (0.5% w/v). 3. The results confirm with the earlier studies concerning the identity of the CYP2B6 enzyme. The fm, CYP2B6 values for artemisinin, bupropion, clopidogrel, ketamine, selegiline, sertraline and ticlopidine were 0.24, 0.28, 0.15, 0.45, 0.46, 0.42 and 0.54, respectively, in HLM determined by chemical inhibition method. The fm, CYP2B6 values for artemisinin, bupropion, clopidogrel, ketamine, selegiline, sertraline and ticlopidine were 0.46, 0.17, 0.15, 0.60, 0.51, 0.66 and 0.77, respectively, in HLM determined by chemical inhibition method in the presence of BSA (0.5% w/v). 4. Bupropion metabolism is majorly mediated by CYP2C19 (0.41) with a minor contribution from CYP2B6 (0.16) in the presence of BSA. Ticlopidine is a time-dependent inhibitor of both CYP2B6 and CYP2C19 that can inhibit the bupropion metabolism by 50-60%.
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Affiliation(s)
| | - Ramakrishna Nirogi
- a Drug Metabolism and Pharmacokinetics, Suven Life Sciences Ltd , Hyderabad , India
| | - Venkatesham Uthukam
- a Drug Metabolism and Pharmacokinetics, Suven Life Sciences Ltd , Hyderabad , India
| | - Arunkumar Manoharan
- a Drug Metabolism and Pharmacokinetics, Suven Life Sciences Ltd , Hyderabad , India
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Lu Y, Zhong H, Tang Q, Huang Z, Jing N, Smith J, Miao R, Li Y, Yuan H. Construction and verification of CYP3A5 gene polymorphisms using a Saccharomyces cerevisiae expression system to predict drug metabolism. Mol Med Rep 2017; 15:1593-1600. [PMID: 28259948 PMCID: PMC5364972 DOI: 10.3892/mmr.2017.6214] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 01/05/2017] [Indexed: 11/25/2022] Open
Abstract
The present study evaluated the ability of a Saccharomyces cerevisiae expression system to predict the pharmacokinetic (PK) activity of a calcium channel blocker in patients with distinct cytochrome P450 3A5 (CYP3A5) polymorphisms. The blood pressure lowering activity of amlodipine in 57 hypertensive patients with CYP3A5*1/*1, CYP3A5*1/*3, CYP3A5*4 and CYP3A5*6 polymorphisms was evaluated by the current study. Subsequently, a Saccharomyces cerevisiae expression system for CYP3A5 gene polymorphisms was constructed to examine the PK activity of CYP3A5*1/*1, CYP3A5*4 and CYP3A5*6 polymorphisms. This system was used to predict the PK of amlodipine and was compared with the in vivo data from different gene polymorphism groups. The blood pressure lowering activity of amlodipine in hypertensive patients varied among CYP3A5 polymorphisms. The in vivo results demonstrated that CYP3A5*6 exhibited the highest metabolic rate, followed by CYP3A5*1/*1, CYP3A5*4 and CYP3A5*1/*3. The difference between CYP3A5*6 and CYP3A5*1/*1 was not statistically significant (P=0.5). In accordance with in vivo data, CYP3A5*1/*1 exhibited the highest in vitro metabolic rate, followed by CYP3A5*6 and CYP3A5*4. With the exception of the comparison between CYP3A5*6 and CYP3A5*1/*1, polymorphisms exhibited statistically significant differences compared with CYP3A5*1/*1 (P<0.05). The Saccharomyces cerevisiae expression system may be a cost effective and potentially useful tool for assessing the PK activity of drugs that are metabolized by CYP3A5.
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Affiliation(s)
- Yao Lu
- Department of Clinical Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Hua Zhong
- Department of Cardiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Qing Tang
- Department of Cardiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Zhijun Huang
- Department of Clinical Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Ningning Jing
- Department of Cardiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Julie Smith
- School of Community Health Sciences, University of Nevada, Reno, NV 89557, USA
| | - Rujia Miao
- Department of Clinical Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Yapei Li
- Department of Clinical Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
| | - Hong Yuan
- Department of Clinical Pharmacy, The Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China
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8
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Siu YA, Lai WG. Impact of Probe Substrate Selection on Cytochrome P450 Reaction Phenotyping Using the Relative Activity Factor. Drug Metab Dispos 2016; 45:183-189. [PMID: 27934636 DOI: 10.1124/dmd.116.073510] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 11/30/2016] [Indexed: 12/17/2022] Open
Abstract
Accurately assessing the contribution of cytochrome P450 (P450) isoforms to overall metabolic clearance is important for prediction of clinical drug-drug interactions (DDIs). The relative activity factor (RAF) approach in P450 reaction phenotyping assumes that the interaction between P450-selective probes and testing systems is the same as the interaction of drug candidate with those systems. To test this assumption, an intersystem clearance ratio (ICR) was created to evaluate the difference in values between RAF-scaled intrinsic clearance (CLint) and measured CLint in human liver microsomes (HLMs). The RAF value for CYP3A4 or CYP2C9 derived from a particular P450-selective probe reaction was applied to calculate RAF-scaled CLint for other probe reactions of the same P450 isoform in a crossover manner and compared with the measured HLM CLint When RAF derived from midazolam or nifedipine was used for CYP3A4, the ICR for testosterone 6β-hydroxylation was 31 and 25, respectively, suggesting significantly diverse interactions of CYP3A4 probes with the testing systems. Such ICR differences were less profound among probes for CYP2C9. In addition, these RAF values were applied to losartan and meloxicam, whose metabolism is mostly CYP2C9 mediated. Only using the RAF derived from testosterone for CYP3A4 produced the expected CYP2C9 contribution of 72%-87% and 47%-69% for metabolism of losartan and meloxicam, respectively. RAF derived from other CYP3A4 probes would have attributed predominantly to CYP3A4 and led to incorrect prediction of DDIs. Our study demonstrates a significant impact of probe substrate selection on P450 phenotyping using the RAF approach, and the ICR may provide a potential solution.
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Affiliation(s)
- Y Amy Siu
- Drug Metabolism and Pharmacokinetics Department, Biopharmaceutical Assessments, Eisai Inc., Andover, Massachusetts
| | - W George Lai
- Drug Metabolism and Pharmacokinetics Department, Biopharmaceutical Assessments, Eisai Inc., Andover, Massachusetts
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9
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Takano J, Maeda K, Bolger MB, Sugiyama Y. The Prediction of the Relative Importance of CYP3A/P-glycoprotein to the Nonlinear Intestinal Absorption of Drugs by Advanced Compartmental Absorption and Transit Model. Drug Metab Dispos 2016; 44:1808-1818. [DOI: 10.1124/dmd.116.070011] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 08/17/2016] [Indexed: 01/08/2023] Open
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10
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Parmentier Y, Pothier C, Delmas A, Caradec F, Trancart MM, Guillet F, Bouaita B, Chesne C, Brian Houston J, Walther B. Direct and quantitative evaluation of the human CYP3A4 contribution (fm) to drug clearance using the in vitro SILENSOMES model. Xenobiotica 2016; 47:562-575. [DOI: 10.1080/00498254.2016.1208854] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yannick Parmentier
- Biopharmaceutical Research Department, Technologie Servier, Orléans Cedex, France,
| | - Corinne Pothier
- Biopharmaceutical Research Department, Technologie Servier, Orléans Cedex, France,
| | - Audrey Delmas
- Biopharmaceutical Research Department, Technologie Servier, Orléans Cedex, France,
| | - Fabrice Caradec
- Biopharmaceutical Research Department, Technologie Servier, Orléans Cedex, France,
| | | | | | | | | | | | - Bernard Walther
- Biopharmaceutical Research Department, Technologie Servier, Orléans Cedex, France,
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11
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Gledhill K, Guo Z, Umegaki-Arao N, Higgins CA, Itoh M, Christiano AM. Melanin Transfer in Human 3D Skin Equivalents Generated Exclusively from Induced Pluripotent Stem Cells. PLoS One 2015; 10:e0136713. [PMID: 26308443 PMCID: PMC4550351 DOI: 10.1371/journal.pone.0136713] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Accepted: 08/07/2015] [Indexed: 01/06/2023] Open
Abstract
The current utility of 3D skin equivalents is limited by the fact that existing models fail to recapitulate the cellular complexity of human skin. They often contain few cell types and no appendages, in part because many cells found in the skin are difficult to isolate from intact tissue and cannot be expanded in culture. Induced pluripotent stem cells (iPSCs) present an avenue by which we can overcome this issue due to their ability to be differentiated into multiple cell types in the body and their unlimited growth potential. We previously reported generation of the first human 3D skin equivalents from iPSC-derived fibroblasts and iPSC-derived keratinocytes, demonstrating that iPSCs can provide a foundation for modeling a complex human organ such as skin. Here, we have increased the complexity of this model by including additional iPSC-derived melanocytes. Epidermal melanocytes, which are largely responsible for skin pigmentation, represent the second most numerous cell type found in normal human epidermis and as such represent a logical next addition. We report efficient melanin production from iPSC-derived melanocytes and transfer within an entirely iPSC-derived epidermal-melanin unit and generation of the first functional human 3D skin equivalents made from iPSC-derived fibroblasts, keratinocytes and melanocytes.
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Affiliation(s)
- Karl Gledhill
- Department of Dermatology, Columbia University, New York, NY, United States of America
| | - Zongyou Guo
- Department of Dermatology, Columbia University, New York, NY, United States of America
| | - Noriko Umegaki-Arao
- Department of Dermatology, Columbia University, New York, NY, United States of America
| | - Claire A. Higgins
- Department of Dermatology, Columbia University, New York, NY, United States of America
| | - Munenari Itoh
- Department of Dermatology, Columbia University, New York, NY, United States of America
| | - Angela M. Christiano
- Department of Dermatology, Columbia University, New York, NY, United States of America
- Department of Genetics and Development, Columbia University, New York, NY, United States of America
- * E-mail:
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12
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Henderson CJ, McLaughlin LA, Osuna-Cabello M, Taylor M, Gilbert I, McLaren AW, Wolf CR. Application of a novel regulatable Cre recombinase system to define the role of liver and gut metabolism in drug oral bioavailability. Biochem J 2015; 465:479-88. [PMID: 25377919 PMCID: PMC6949133 DOI: 10.1042/bj20140582] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The relative contribution of hepatic compared with intestinal oxidative metabolism is a crucial factor in drug oral bioavailability and therapeutic efficacy. Oxidative metabolism is mediated by the cytochrome P450 mono-oxygenase system to which cytochrome P450 reductase (POR) is the essential electron donor. In order to study the relative importance of these pathways in drug disposition, we have generated a novel mouse line where Cre recombinase is driven off the endogenous Cyp1a1 gene promoter; this line was then crossed on to a floxed POR mouse. A 40 mg/kg dose of the Cyp1a1 inducer 3-methylcholanthrene (3MC) eliminated POR expression in both liver and small intestine, whereas treatment at 4 mg/kg led to a more targeted deletion in the liver. Using this approach, we have studied the pharmacokinetics of three probe drugs--paroxetine, midazolam, nelfinavir--and show that intestinal metabolism is a determinant of oral bioavailability for the two latter compounds. The Endogenous Reductase Locus (ERL) mouse represents a significant advance on previous POR deletion models as it allows direct comparison of hepatic and intestinal effects on drug and xenobiotic clearance using lower doses of a single Cre inducing agent, and in addition minimizes any cytotoxic effects, which may compromise interpretation of the experimental data.
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Affiliation(s)
- Colin J. Henderson
- Division of Cancer Research, Level 9, Jacqui Wood Cancer Centre, University of Dundee, Ninewells Hospital & Medical School, Dundee DD1 9SY, U.K
| | - Lesley A. McLaughlin
- Division of Cancer Research, Level 9, Jacqui Wood Cancer Centre, University of Dundee, Ninewells Hospital & Medical School, Dundee DD1 9SY, U.K
| | - Maria Osuna-Cabello
- Drug Discovery Unit, College of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, U.K
| | - Malcolm Taylor
- Drug Discovery Unit, College of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, U.K
| | - Ian Gilbert
- Drug Discovery Unit, College of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, U.K
| | - Aileen W. McLaren
- Division of Cancer Research, Level 9, Jacqui Wood Cancer Centre, University of Dundee, Ninewells Hospital & Medical School, Dundee DD1 9SY, U.K
| | - C. Roland Wolf
- Drug Discovery Unit, College of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, U.K
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Plewka D, Plewka A, Szczepanik T, Morek M, Bogunia E, Wittek P, Kijonka C. Expression of selected cytochrome P450 isoforms and of cooperating enzymes in colorectal tissues in selected pathological conditions. Pathol Res Pract 2014; 210:242-9. [PMID: 24485758 DOI: 10.1016/j.prp.2013.12.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Revised: 10/20/2013] [Accepted: 12/16/2013] [Indexed: 01/28/2023]
Abstract
The current interest in CYP expression in the colon results from its uniqueness as a target organ for cancer. To date, the CYP expression profiles in the colon have not yet been subject of comprehensive research. In this study, we investigated 40 patients with Crohn's disease, 40 with ulcerative colitis, and 40 healthy subjects as a control group. Colon tissues were fixed, dehydrated, cleared in xylene and embedded in paraffin. Sections were prepared from paraffin blocks for immunohistochemical staining with specific antibodies. We used antibodies to the human CYP1A1, CYP2B6, CYP2C9, CYP2E1 and CYP3A4 isoforms, as well as antibodies to the human glycoprotein P, glutathione-S transferase and antibody to the UDP-glucuronosyltransferase. The sections were stained immunohistochemically and examined using light microscopy. Cellular localization was determined, and computer image analysis was used. In all cases with Crohn's disease, the proteins studied showed at least a twofold expression. Ulcerative colitis showed a much weaker influence regarding the expression of the proteins studied but in case of CYP2C9 and UDP-glucuronosyltransferase, a decrease of expression was observed.
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Affiliation(s)
- Danuta Plewka
- Department of Histology, Medical University of Silesia, Katowice, Poland
| | - Andrzej Plewka
- Department of Proteomics, Medical University of Silesia, Sosnowiec, Poland.
| | - Tomasz Szczepanik
- Department of Proteomics, Medical University of Silesia, Sosnowiec, Poland
| | - Michał Morek
- Department of Proteomics, Medical University of Silesia, Sosnowiec, Poland
| | - Edyta Bogunia
- Department of Proteomics, Medical University of Silesia, Sosnowiec, Poland
| | - Piotr Wittek
- Department of Proteomics, Medical University of Silesia, Sosnowiec, Poland
| | - Czarosław Kijonka
- Department of Proteomics, Medical University of Silesia, Sosnowiec, Poland
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14
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Henderson CJ, McLaughlin LA, Finn RD, Ronseaux S, Kapelyukh Y, Wolf CR. A role for cytochrome b5 in the In vivo disposition of anticancer and cytochrome P450 probe drugs in mice. Drug Metab Dispos 2013; 42:70-7. [PMID: 24115751 DOI: 10.1124/dmd.113.055277] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The role of microsomal cytochrome b5 (Cyb5) in defining the rate of drug metabolism and disposition has been intensely debated for several decades. Recently we described mouse models involving the hepatic or global deletion of Cyb5, demonstrating its central role in in vivo drug disposition. We have now used the cytochrome b5 complete null (BCN) model to determine the role of Cyb5 in the metabolism of ten pharmaceuticals metabolized by a range of cytochrome P450s, including five anticancer drugs, in vivo and in vitro. The extent to which metabolism was significantly affected by the absence of Cyb5 was substrate-dependent; AUC increased (75-245%) and clearance decreased (35-72%) for phenacetin, metoprolol, and chlorzoxazone. Tolbutamide disposition was not significantly altered by Cyb5 deletion, while for midazolam clearance was decreased by 66%. The absence of Cyb5 had no effect on gefitinib and paclitaxel disposition, while significant changes in the in vivo pharmacokinetics were measured for: cyclophosphamide [maximum plasma concentration (Cmax) and terminal half-life increased 55% and 40%, respectively], tamoxifen (AUClast and Cmax increased 370% and 233%, respectively), and anastrozole (AUC and terminal half-life increased 125% and 62%, respectively; clearance down 80%). These data provide strong evidence that both hepatic and extrahepatic Cyb5 levels are an important determinant of in vivo drug disposition catalyzed by a range of cytochrome P450s, including currently prescribed anticancer agents, and that individuality in Cyb5 expression could be a significant determinant in rates of drug disposition in man.
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Affiliation(s)
- Colin J Henderson
- Division of Cancer Research, Medical Research Institute, University of Dundee, and Ninewells Hospital and Medical School, Dundee, United Kingdom
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15
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Patel N, Polak S, Jamei M, Rostami-Hodjegan A, Turner DB. Quantitative prediction of formulation-specific food effects and their population variability from in vitro data with the physiologically-based ADAM model: a case study using the BCS/BDDCS Class II drug nifedipine. Eur J Pharm Sci 2013; 57:240-9. [PMID: 24060671 DOI: 10.1016/j.ejps.2013.09.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 09/05/2013] [Accepted: 09/10/2013] [Indexed: 01/15/2023]
Abstract
Quantitative prediction of food effects (FE) upon drug pharmacokinetics, including population variability, in advance of human trials may help with trial design by optimising the number of subjects and sampling times when a clinical study is warranted or by negating the need for conduct of clinical studies. Classification and rule-based systems such as the BCS and BDDCS and statistical QSARs are widely used to anticipate the nature of FE in early drug development. However, their qualitative rather than quantitative nature makes them less appropriate for assessing the magnitude of FE. Moreover, these approaches are based upon drug properties alone and are not appropriate for estimating potential formulation-specific FE on modified or controlled release products. In contrast, physiologically-based mechanistic models can consider the scope and interplay of a range of physiological changes after food intake and, in combination with appropriate in vitro drug- and formulation-specific data, can make quantitative predictions of formulation-specific FE including the inter-individual variability of such effects. Herein the Advanced Dissolution, Absorption and Metabolism (ADAM) model is applied to the prediction of formulation-specific FE for BCS/BDDCS Class II drug and CYP3A4 substrate nifedipine using as far as possible only in vitro data. Predicted plasma concentration profiles of all three studied formulations under fasted and fed states are within 2-fold of clinically observed profiles. The % prediction error (%PE) in fed-to-fasted ratio of Cmax and AUC were less than 5% for all formulations except for the Cmax of Nifedicron (%PE=-29.6%). This successful case study should help to improve confidence in the use of mechanistic physiologically-based models coupled with in vitro data for the anticipation of FE in advance of in vivo studies. However, it is acknowledged that further studies with drugs/formulations exhibiting a wide range of properties are required to further validate this methodology.
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Affiliation(s)
- Nikunjkumar Patel
- Simcyp (a Certara Company) Limited, Blades Enterprise Centre, John Street, Sheffield S2 4SU, UK.
| | - Sebastian Polak
- Simcyp (a Certara Company) Limited, Blades Enterprise Centre, John Street, Sheffield S2 4SU, UK; Faculty of Pharmacy, Jagiellonian University Medical College, Krakow, Poland
| | - Masoud Jamei
- Simcyp (a Certara Company) Limited, Blades Enterprise Centre, John Street, Sheffield S2 4SU, UK
| | - Amin Rostami-Hodjegan
- Simcyp (a Certara Company) Limited, Blades Enterprise Centre, John Street, Sheffield S2 4SU, UK; Centre for Applied Pharmaceutical Research, Manchester Pharmacy School, The University of Manchester, UK
| | - David B Turner
- Simcyp (a Certara Company) Limited, Blades Enterprise Centre, John Street, Sheffield S2 4SU, UK
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16
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Yoda N, Emoto C, Date S, Kondo S, Miyake M, Nakazato S, Umehara K, Kashiyama E. Characterization of intestinal and hepatic P450 enzymes in cynomolgus monkeys with typical substrates and inhibitors for human P450 enzymes. Xenobiotica 2012; 42:719-30. [DOI: 10.3109/00498254.2012.656732] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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17
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Genotype-Based Quantitative Prediction of Drug Exposure for Drugs Metabolized by CYP2D6. Clin Pharmacol Ther 2011; 90:582-7. [DOI: 10.1038/clpt.2011.147] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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18
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Rowland Yeo K, Walsky R, Jamei M, Rostami-Hodjegan A, Tucker G. Prediction of time-dependent CYP3A4 drug–drug interactions by physiologically based pharmacokinetic modelling: Impact of inactivation parameters and enzyme turnover. Eur J Pharm Sci 2011; 43:160-73. [DOI: 10.1016/j.ejps.2011.04.008] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Revised: 04/05/2011] [Accepted: 04/14/2011] [Indexed: 11/25/2022]
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19
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Sugiyama E, Kikuchi A, Inada M, Sato H. The use of 13C-erythromycin as an in vivo probe to evaluate CYP3A-mediated drug interactions in rats. J Pharm Sci 2011; 100:3995-4005. [PMID: 21618542 DOI: 10.1002/jps.22616] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Revised: 04/16/2011] [Accepted: 04/21/2011] [Indexed: 11/05/2022]
Abstract
(14)C-erythromycin breath test has been utilized to evaluate the extent of CYP3A activity in vivo. However, its radioactivity sometimes impedes its clinical application. In this study, we employed erythromycin labeled with (13)C ((13)C-EM), a nonradioactive stable isotope, as an in vivo probe of breath test to evaluate CYP3A-mediated drug interactions in rats. A physiologically based pharmacokinetic (PBPK) model to describe (13)CO(2) exhalation altered by drug interactions was newly constructed. Rats received an intravenous or oral administration of (13)C-EM with or without a CYP3A inhibitor or inducer, that is, ketoconazole (KCZ) or dexamethasone (DEX), respectively. Breath samples were taken at designated times, measured with an infrared spectrophotometer, and the Δ(13) CO(2) value (‰) in each sample was obtained. The C(max) and AUC(0-t) of Δ(13) CO(2) were significantly decreased with KCZ and increased with DEX. The PBPK model in this study successfully described the (13)CO(2) exhalation after (13)C-EM administration in the absence and presence of drug interactions. In conclusion, this study proposed a simple and rapid in vivo methodology to utilize (13)C-EM for the quantitative analysis of CYP3A inhibition and induction. This method using small animals may be useful in early drug development processes.
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Affiliation(s)
- Erika Sugiyama
- Department of Clinical and Molecular Pharmacokinetics/Pharmacodynamics, Faculty of Pharmaceutical Sciences, Showa University, Tokyo, Japan.
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20
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Cubitt HE, Yeo KR, Howgate EM, Rostami-Hodjegan A, Barter ZE. Sources of interindividual variability in IVIVE of clearance: an investigation into the prediction of benzodiazepine clearance using a mechanistic population-based pharmacokinetic model. Xenobiotica 2011; 41:623-38. [DOI: 10.3109/00498254.2011.560294] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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21
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Filppula AM, Laitila J, Neuvonen PJ, Backman JT. Reevaluation of the Microsomal Metabolism of Montelukast: Major Contribution by CYP2C8 at Clinically Relevant Concentrations. Drug Metab Dispos 2011; 39:904-11. [DOI: 10.1124/dmd.110.037689] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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22
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Niwa T, Murayama N, Yamazaki H. Comparison of the Contributions of Cytochromes P450 3A4 and 3A5 in Drug Oxidation Rates and Substrate Inhibition. ACTA ACUST UNITED AC 2010. [DOI: 10.1248/jhs.56.239] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Toshiro Niwa
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University
| | - Norie Murayama
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University
| | - Hiroshi Yamazaki
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University
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23
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Emoto C, Murayama N, Rostami-Hodjegan A, Yamazaki H. Utilization of estimated physicochemical properties as an integrated part of predicting hepatic clearance in the early drug-discovery stage: Impact of plasma and microsomal binding. Xenobiotica 2009; 39:227-35. [DOI: 10.1080/00498250802668863] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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24
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Christensen H, Mathiesen L, Postvoll LW, Winther B, Molden E. Different Enzyme Kinetics of Midazolam in Recombinant CYP3A4 Microsomes from Human and Insect Sources. Drug Metab Pharmacokinet 2009; 24:261-8. [DOI: 10.2133/dmpk.24.261] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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Finn RD, McLaughlin LA, Ronseaux S, Rosewell I, Houston JB, Henderson CJ, Wolf CR. Defining the in Vivo Role for cytochrome b5 in cytochrome P450 function through the conditional hepatic deletion of microsomal cytochrome b5. J Biol Chem 2008; 283:31385-93. [PMID: 18805792 PMCID: PMC2581580 DOI: 10.1074/jbc.m803496200] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
In vitro, cytochrome b5 modulates the rate of
cytochrome P450-dependent mono-oxygenation reactions. However, the role of
this enzyme in determining drug pharmacokinetics in vivo and the
consequential effects on drug absorption distribution, metabolism, excretion,
and toxicity are unclear. In order to resolve this issue, we have carried out
the conditional deletion of microsomal cytochrome b5 in
the liver to create the hepatic microsomal cytochrome b5
null mouse. These mice develop and breed normally and have no overt phenotype.
In vitro studies using a range of substrates for different P450
enzymes showed that in hepatic microsomal cytochrome b5
null NADH-mediated metabolism was essentially abolished for most substrates,
and the NADPH-dependent metabolism of many substrates was reduced by
50–90%. This reduction in metabolism was also reflected in the in
vivo elimination profiles of several drugs, including midazolam,
metoprolol, and tolbutamide. In the case of chlorzoxazone, elimination was
essentially unchanged. For some drugs, the pharmacokinetics were also markedly
altered; for example, when administered orally, the maximum plasma
concentration for midazolam was increased by 2.5-fold, and the clearance
decreased by 3.6-fold in hepatic microsomal cytochrome b5
null mice. These data indicate that microsomal cytochrome
b5 can play a major role in the in vivo
metabolism of certain drugs and chemicals but in a P450- and
substrate-dependent manner.
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Affiliation(s)
- Robert D Finn
- Cancer Research UK Molecular Pharmacology Unit, Biomedical Research Institute, Level 5, Ninewells Hospital and Medical School, Dundee DD1 9SY, United Kingdom
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