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Oka Y, Abe-Sato K, Tabuse H, Yasukawa Y, Yahara T, Nishimoto T, Kamitani M, Fukunaga T, Ochiai N, Kumasaka-Abe T, Hitaka K, Gunji E, Ohara H, Takeda T, Kojima N, Asami T. Discovery of TP0628103: A Highly Potent and Selective MMP-7 Inhibitor with Reduced OATP-Mediated Clearance Designed by Shifting Isoelectric Points. J Med Chem 2024; 67:1406-1420. [PMID: 38214909 DOI: 10.1021/acs.jmedchem.3c01967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2024]
Abstract
Matrix metalloproteinase-7 (MMP-7) has been shown to play an important role in pathophysiological processes such as cancer and fibrosis. We previously discovered selective MMP-7 inhibitors by molecular hybridization and structure-based drug design. However, the systemic clearance (CLtot) of the biologically active lead compound was very high. Because our studies revealed that hepatic uptake by organic anion transporting polypeptide (OATP) was responsible for the high CLtot, we found a novel approach to reducing their uptake based on isoelectric point (IP) values as an indicator for substrate recognition by OATP1B1/1B3. Our "IP shift strategy" to adjust the IP values culminated in the discovery of TP0628103 (18), which is characterized by reduced in vitro OATP-mediated hepatic uptake and in vivo CLtot. Our in vitro-in vivo extrapolation of OATP-mediated clearance and the "IP shift strategy" provide crucial insights for a new medicinal chemistry approach to reducing the systemic clearance of OATP1B1/1B3 substrates.
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Affiliation(s)
- Yusuke Oka
- Chemistry Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-Cho, Kita-Ku, Saitama 331-9530, Japan
| | - Kumi Abe-Sato
- Chemistry Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-Cho, Kita-Ku, Saitama 331-9530, Japan
| | - Hideaki Tabuse
- Chemistry Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-Cho, Kita-Ku, Saitama 331-9530, Japan
| | - Yoshifumi Yasukawa
- Chemistry Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-Cho, Kita-Ku, Saitama 331-9530, Japan
| | - Tohru Yahara
- Drug Metabolism and Pharmacokinetics Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-Cho, Kita-Ku, Saitama 331-9530, Japan
| | - Tomohiro Nishimoto
- Drug Metabolism and Pharmacokinetics Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-Cho, Kita-Ku, Saitama 331-9530, Japan
| | - Masafumi Kamitani
- Discovery Technologies Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-Cho, Kita-Ku, Saitama 331-9530, Japan
| | - Takuya Fukunaga
- Discovery Technologies Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-Cho, Kita-Ku, Saitama 331-9530, Japan
| | - Nagahiro Ochiai
- Discovery Technologies Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-Cho, Kita-Ku, Saitama 331-9530, Japan
| | - Tomoko Kumasaka-Abe
- Discovery Technologies Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-Cho, Kita-Ku, Saitama 331-9530, Japan
| | - Kosuke Hitaka
- Pharmacology Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-Cho, Kita-Ku, Saitama 331-9530, Japan
| | - Emi Gunji
- Pharmacology Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-Cho, Kita-Ku, Saitama 331-9530, Japan
| | - Hiroki Ohara
- Pharmacology Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-Cho, Kita-Ku, Saitama 331-9530, Japan
| | - Takuya Takeda
- Pharmacology Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-Cho, Kita-Ku, Saitama 331-9530, Japan
| | - Naoki Kojima
- Pharmacology Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-Cho, Kita-Ku, Saitama 331-9530, Japan
| | - Taiji Asami
- Chemistry Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403, Yoshino-Cho, Kita-Ku, Saitama 331-9530, Japan
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Sychev IV, Denisenko NP, Kachanova AA, Lapshtaeva AV, Abdullaev SP, Goncharova LN, Mirzaev KB, Sychev DA. Pharmacogenetic markers of development of angioneurotic edema as a secondary side effect to enalapril in patients with essential arterial hypertension. Int J Risk Saf Med 2024; 35:37-47. [PMID: 37742663 DOI: 10.3233/jrs-230006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
BACKGROUND Angioneurotic edema is the most dangerous complication in angiotensin-converting enzyme inhibitors (ACEIs) therapy. Based on the current data, the clinical and genetic predictors of angioedema development are still understudied, which demonstrates the relevance of this study. OBJECTIVE To reveal the pharmacogenetic predictors of the angioedema as a secondary side effect to enalapril in patients with essential arterial hypertension. METHODS The study enrolled 111 subjects randomized into two groups: study group, patients with the angioedema as a secondary side effect to enalapril; and control group, patients without adverse drug reaction. All patients underwent pharmacogenetic testing. RESULTS An association between the development of the angioneurotic edema and the genotypes AA rs2306283 of gene SLCO1B1, TT rs4459610 of gene ACE, and CC rs1799722 of gene BDKRB2 in patients was revealed. CONCLUSION The findings justify further investigations of the revealed genetic predictors of angioedema with larger-size patient populations.
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Affiliation(s)
- Ivan V Sychev
- Department of Faculty Therapy, Ogarev Mordovia State University, Saransk, Russian Federation
| | - Natalia P Denisenko
- Research Institute of Molecular and Personalized Medicine, Department of Clinical Pharmacology and Therapy named after Academician B.E. Votchal, Russian Medical Academy of Continuous Professional Education, Moscow, Russian Federation
| | - Anastasiya A Kachanova
- Predictive and Prognostic Biomarkers Department, Russian Medical Academy of Continuous Professional Education, Moscow, Russian Federation
| | - Anna V Lapshtaeva
- Department of Immunology, Microbiology and Virology, Ogarev Mordovia State University, Saransk, Russian Federation
| | - Sherzod P Abdullaev
- Research Institute of Molecular and Personalized Medicine, Russian Medical Academy of Continuous Professional Education, Moscow, Russian Federation
| | - Ludmila N Goncharova
- Department of Faculty Therapy, Ogarev Mordovia State University, Saransk, Russian Federation
| | - Karin B Mirzaev
- Research Institute of Molecular and Personalized Medicine, Russian Medical Academy of Continuous Professional Education, Moscow, Russian Federation
| | - Dmitry A Sychev
- Clinical Pharmacology and Therapy Department named after Academician B.E. Votchal, Russian Medical Academy of Continuous Professional Education, Moscow, Russian Federation
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Kikuchi R, Chothe PP, Chu X, Huth F, Ishida K, Ishiguro N, Jiang R, Shen H, Stahl SH, Varma MVS, Willemin ME, Morse BL. Utilization of OATP1B Biomarker Coproporphyrin-I to Guide Drug-Drug Interaction Risk Assessment: Evaluation by the Pharmaceutical Industry. Clin Pharmacol Ther 2023; 114:1170-1183. [PMID: 37750401 DOI: 10.1002/cpt.3062] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 09/08/2023] [Indexed: 09/27/2023]
Abstract
Drug-drug interactions (DDIs) involving hepatic organic anion transporting polypeptides 1B1/1B3 (OATP1B) can be substantial, however, challenges remain for predicting interaction risk. Emerging evidence suggests that endogenous biomarkers, particularly coproporphyrin-I (CP-I), can be used to assess in vivo OATP1B activity. The present work under the International Consortium for Innovation and Quality in Pharmaceutical Development was aimed primarily at assessing CP-I as a biomarker for informing OATP1B DDI risk. Literature and unpublished CP-I data along with pertinent in vitro and clinical DDI information were collected to identify DDIs primarily involving OATP1B inhibition and assess the relationship between OATP1B substrate drug and CP-I exposure changes. Static models to predict changes in exposure of CP-I, as a selective OATP1B substrate, were also evaluated. Significant correlations were observed between CP-I area under the curve ratio (AUCR) or maximum concentration ratio (Cmax R) and AUCR of substrate drugs. In general, the CP-I Cmax R was equal to or greater than the CP-I AUCR. CP-I Cmax R < 1.25 was associated with absence of OATP1B-mediated DDIs (AUCR < 1.25) with no false negative predictions. CP-I Cmax R < 2 was associated with weak OATP1B-mediated DDIs (AUCR < 2). A correlation was identified between CP-I exposure changes and OATP1B1 static DDI predictions. Recommendations for collecting and interpreting CP-I data are discussed, including a decision tree for guiding DDI risk assessment. In conclusion, measurement of CP-I is recommended to inform OATP1B inhibition potential. The current analysis identified changes in CP-I exposure that may be used to prioritize, delay, or replace clinical DDI studies.
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Affiliation(s)
- Ryota Kikuchi
- Quantitative, Translational and ADME Sciences, AbbVie Inc., North Chicago, Illinois, USA
| | - Paresh P Chothe
- Global Drug Metabolism and Pharmacokinetics, Takeda Development Center Americas, Inc. (TDCA), Lexington, Massachusetts, USA
| | - Xiaoyan Chu
- ADME and Discovery Toxicology, Merck & Co., Inc., Rahway, New Jersey, USA
| | - Felix Huth
- PK Sciences, Novartis Pharma AG, Basel, Switzerland
| | - Kazuya Ishida
- Drug Metabolism, Gilead Sciences Inc., Foster City, California, USA
| | - Naoki Ishiguro
- Pharmacokinetics and Non-Clinical Safety Department, Nippon Boehringer Ingelheim Co., Ltd., Kobe, Japan
| | - Rongrong Jiang
- Drug Metabolism and Pharmacokinetics, Eisai Inc., Cambridge, Massachusetts, USA
| | - Hong Shen
- Departments of Drug Metabolism and Pharmacokinetics, Bristol Myers Squibb Research and Development, Princeton, New Jersey, USA
| | - Simone H Stahl
- CVRM Safety, Clinical Pharmacology and Safety Sciences, R&D, AstraZeneca, Cambridge, UK
| | - Manthena V S Varma
- Pharmacokinetics, Dynamics and Metabolism, Medicine Design, Pfizer Inc., Groton, Connecticut, USA
| | - Marie-Emilie Willemin
- Drug Metabolism and Pharmacokinetics, Janssen Research and Development, a Division of Janssen Pharmaceutica NV, Beerse, Belgium
| | - Bridget L Morse
- Department of Drug Disposition, Eli Lilly, Indianapolis, Indiana, USA
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Li B, Sangkuhl K, Whaley R, Woon M, Keat K, Whirl-Carrillo M, Ritchie MD, Klein TE. Frequencies of pharmacogenomic alleles across biogeographic groups in a large-scale biobank. Am J Hum Genet 2023; 110:1628-1647. [PMID: 37757824 PMCID: PMC10577080 DOI: 10.1016/j.ajhg.2023.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 09/01/2023] [Accepted: 09/01/2023] [Indexed: 09/29/2023] Open
Abstract
Pharmacogenomics (PGx) is an integral part of precision medicine and contributes to the maximization of drug efficacy and reduction of adverse drug event risk. Accurate information on PGx allele frequencies improves the implementation of PGx. Nonetheless, curating such information from published allele data is time and resource intensive. The limited number of allelic variants in most studies leads to an underestimation of certain alleles. We applied the Pharmacogenomics Clinical Annotation Tool (PharmCAT) on an integrated 200K UK Biobank genetic dataset (N = 200,044). Based on PharmCAT results, we estimated PGx frequencies (alleles, diplotypes, phenotypes, and activity scores) for 17 pharmacogenes in five biogeographic groups: European, Central/South Asian, East Asian, Afro-Caribbean, and Sub-Saharan African. PGx frequencies were distinct for each biogeographic group. Even biogeographic groups with similar proportions of phenotypes were driven by different sets of dominant PGx alleles. PharmCAT also identified "no-function" alleles that were rare or seldom tested in certain groups by previous studies, e.g., SLCO1B1∗31 in the Afro-Caribbean (3.0%) and Sub-Saharan African (3.9%) groups. Estimated PGx frequencies are disseminated via the PharmGKB (The Pharmacogenomics Knowledgebase: www.pharmgkb.org). We demonstrate that genetic biobanks such as the UK Biobank are a robust resource for estimating PGx frequencies. Improving our understanding of PGx allele and phenotype frequencies provides guidance for future PGx studies and clinical genetic test panel design, and better serves individuals from wider biogeographic backgrounds.
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Affiliation(s)
- Binglan Li
- Department of Biomedical Data Science, Stanford University, Stanford, CA 94305, USA
| | - Katrin Sangkuhl
- Department of Biomedical Data Science, Stanford University, Stanford, CA 94305, USA
| | - Ryan Whaley
- Department of Biomedical Data Science, Stanford University, Stanford, CA 94305, USA
| | - Mark Woon
- Department of Biomedical Data Science, Stanford University, Stanford, CA 94305, USA
| | - Karl Keat
- Genomics and Computational Biology PhD Program, University of Pennsylvania, Philadelphia, PA 19104, USA
| | | | - Marylyn D Ritchie
- Department of Genetics, University of Pennsylvania, Philadelphia, PA 19104, USA; Institute for Biomedical Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Teri E Klein
- Department of Biomedical Data Science, Stanford University, Stanford, CA 94305, USA; Department of Genetics (by courtesy), Stanford University, Stanford, CA 94305, USA; Department of Medicine (BMIR), Stanford University, Stanford, CA 94305, USA.
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Ji Q, Zhang Y, Hu Y, Liu L, Cao S, Gao L, Li B, Tian Y, Kong L, Wu S, Ling J, Xiao P, Lu J, Li J, Yao Y, Qin J, Hu S. The influence of methotrexate-related transporter and metabolizing enzyme gene polymorphisms on peri-engraftment syndrome and graft-versus-host disease after haplo-hematopoietic stem cell transplantation in pediatric patients with malignant hematological diseases. Front Immunol 2023; 14:1229266. [PMID: 37731501 PMCID: PMC10507719 DOI: 10.3389/fimmu.2023.1229266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 08/14/2023] [Indexed: 09/22/2023] Open
Abstract
Background Methotrexate (MTX), utilized as a graft-versus-host disease (GvHD) prophylactic agent in allogeneic hematopoietic stem cell transplantation (allo-HSCT), has been proven to effectively decrease the occurrence of the peri-engraftment syndrome (Peri-ES) and acute GvHD (aGvHD). Changes in the pharmacodynamics of MTX are closely associated with gene polymorphisms in genes encoding drug-metabolizing enzymes and transporters. Nevertheless, the current studies mainly concentrate on leukemia or autoimmune diseases, and limited studies on allo-HSCT were reported. Methods Here, we retrospectively assessed the relationship between MTX-related transporter and metabolizing enzyme gene polymorphisms, clinical characteristics, and outcomes in 57 pediatric patients who received haploid HSCT (haplo-HSCT) with malignant tumors at a single center. Results We discovered all gene polymorphisms were in the Hardy-Weinberg equilibrium in our cohort. We discovered a significant correlation between platelet recovery time and ABCB1 (1236C>T) (p = 0.042). Compared with patients with SLCO1B1 (1865+4846T>C) TT, patients with SLCO1B1 (1865+4846T>C) TC/CC had an increased incidence of Peri-ES (p = 0.030). Based on the multivariate Cox analysis, we discovered that SLCO1B1 (1865+4846T>C) TT genotype was an independent protective factor for Peri-ES morbidity (hazard ratio (HR) = 0.464, p = 0.031), and the dose of mononuclear cells reinfused was significantly correlated with II-IV aGvHD (HR = 2.604, p = 0.039). Conclusion In summary, our findings prove that the host's genotypes might modify the risk of developing Peri-ES, contribute to a better understanding of the inter-individual difference in efficacy, and facilitate the development of individualized approaches to GvHD prophylaxis.
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Affiliation(s)
- Qi Ji
- Department of Hematology and Oncology, Children’s Hospital of Soochow University, Suzhou, China
| | - Yongping Zhang
- Department of Hematology and Oncology, Children’s Hospital of Soochow University, Suzhou, China
| | - Yixin Hu
- Department of Hematology and Oncology, Children’s Hospital of Soochow University, Suzhou, China
| | - Lixia Liu
- Department of Medical Affairs, Acornmed Biotechnology Co., Ltd., Tianjin, China
| | - Shanbo Cao
- Department of Medical Affairs, Acornmed Biotechnology Co., Ltd., Tianjin, China
| | - Li Gao
- Department of Hematology and Oncology, Children’s Hospital of Soochow University, Suzhou, China
| | - Bohan Li
- Department of Hematology and Oncology, Children’s Hospital of Soochow University, Suzhou, China
| | - Yuanyuan Tian
- Department of Hematology and Oncology, Children’s Hospital of Soochow University, Suzhou, China
| | - Lingjun Kong
- Department of Hematology and Oncology, Children’s Hospital of Soochow University, Suzhou, China
| | - Shuiyan Wu
- Pediatric Intensive Care Unit, Children’s Hospital of Soochow University, Suzhou, China
| | - Jing Ling
- Department of Hematology and Oncology, Children’s Hospital of Soochow University, Suzhou, China
| | - Peifang Xiao
- Department of Hematology and Oncology, Children’s Hospital of Soochow University, Suzhou, China
| | - Jun Lu
- Department of Hematology and Oncology, Children’s Hospital of Soochow University, Suzhou, China
| | - Jie Li
- Department of Hematology and Oncology, Children’s Hospital of Soochow University, Suzhou, China
| | - Yanhua Yao
- Department of Hematology and Oncology, Children’s Hospital of Soochow University, Suzhou, China
| | - Jiayue Qin
- Department of Medical Affairs, Acornmed Biotechnology Co., Ltd., Tianjin, China
| | - Shaoyan Hu
- Department of Hematology and Oncology, Children’s Hospital of Soochow University, Suzhou, China
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Nozaki Y, Izumi S. Preincubation Time-Dependent, Long-Lasting Inhibition of Drug Transporters and Impact on the Prediction of Drug-Drug Interactions. Drug Metab Dispos 2023; 51:1077-1088. [PMID: 36854606 DOI: 10.1124/dmd.122.000970] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 02/05/2023] [Accepted: 02/21/2023] [Indexed: 03/02/2023] Open
Abstract
Transporter-mediated drug-drug interaction (DDI) is of clinical concern, and the quantitative prediction of DDIs is an indispensable part of drug development. Cell-based inhibition assays, in which a representative probe substrate and a potential inhibitor are coincubated, are routinely performed to assess the inhibitory potential of new molecular entities on drug transporters. However, the inhibitory effect of cyclosporine A (CsA) on organic anion transporting polypeptide (OATP) 1B1 is substantially potentiated with CsA preincubation, and this effect is both long-lasting and dependent on the preincubation time. This phenomenon has also been reported with transporters other than OATP1Bs, but it is considered more prevalent among OATP1Bs and organic cation transporters. Regulatory agencies have also noted this preincubation effect and have recommended that pharmaceutical companies consider inhibitor preincubation when performing in vitro OATP1B1 and OATP1B3 inhibition studies. Although the underlying mechanisms responsible for the preincubation effect are not fully understood, a trans-inhibition mechanism was recently demonstrated for OATP1B1 inhibition by CsA, in which CsA inhibited OATP1B1 not only extracellularly (cis-inhibition) but also intracellularly (trans-inhibition). Furthermore, the trans-inhibition potency of CsA was much greater than that of cis-inhibition, suggesting that trans-inhibition might be a key driver of clinical DDIs of CsA with OATP1B substrate drugs. Although confidence in transporter-mediated DDI prediction is generally considered to be low, the predictability might be further improved by incorporating the trans-inhibition mechanism into static and dynamic models for preincubation-dependent inhibitors of OATP1Bs and perhaps other transporters. SIGNIFICANCE STATEMENT: Preincubation time-dependent, long-lasting inhibition has been observed for OATP1B1 and other solute carrier transporters in vitro. Recently, a trans-inhibition mechanism for the preincubation effect of CsA on OATP1B1 inhibition was identified, with the trans-inhibition potency being greater than that of cis-inhibition. The concept of trans-inhibition may allow us to further understand the mechanism of transporter-mediated DDIs not only for OATP1B1 but also for other transporters and to improve the accuracy and confidence of DDI predictions.
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Affiliation(s)
- Yoshitane Nozaki
- Global Drug Metabolism and Pharmacokinetics, Tsukuba Research Laboratories, Eisai Co., Ltd., 5-1-3, Tokodai, Tsukuba, Ibaraki, 300-2635, Japan (Y.N., S.I.)
| | - Saki Izumi
- Global Drug Metabolism and Pharmacokinetics, Tsukuba Research Laboratories, Eisai Co., Ltd., 5-1-3, Tokodai, Tsukuba, Ibaraki, 300-2635, Japan (Y.N., S.I.)
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Chan GH, Houle R, Zhang J, Katwaru R, Li Y, Chu X. Evaluation of the Selectivity of Several Organic Anion Transporting Polypeptide 1B Biomarkers Using Relative Activity Factor Method. Drug Metab Dispos 2023; 51:1089-1104. [PMID: 37137718 DOI: 10.1124/dmd.122.000972] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 04/13/2023] [Accepted: 05/01/2023] [Indexed: 05/05/2023] Open
Abstract
In recent years, some endogenous substrates of organic anion transporting polypeptide 1B (OATP1B) have been identified and characterized as potential biomarkers to assess OATP1B-mediated clinical drug-drug interactions (DDIs). However, quantitative determination of their selectivity to OATP1B is still limited. In this study, we developed a relative activity factor (RAF) method to determine the relative contribution of hepatic uptake transporters OATP1B1, OATP1B3, OATP2B1, and sodium-taurocholate co-transporting polypeptide (NTCP) on hepatic uptake of several OATP1B biomarkers, including coproporphyrin I (CPI), coproporphyrin I CPIII, and sulfate conjugates of bile acids: glycochenodeoxycholic acid sulfate (GCDCA-S), glycodeoxycholic acid sulfate (GDCA-S), and taurochenodeoxycholic acid sulfate (TCDCA-S). RAF values for OATP1B1, OATP1B3, OATP2B1, and NTCP were determined in cryopreserved human hepatocytes and transporter transfected cells using pitavastatin, cholecystokinin, resveratrol-3-O-β-D-glucuronide, and taurocholic acid (TCA) as reference compounds, respectively. OATP1B1-specific pitavastatin uptake in hepatocytes was measured in the absence and presence of 1 µM estropipate, whereas NTCP-specific TCA uptake was measured in the presence of 10 µM rifampin. Our studies suggested that CPI was a more selective biomarker for OATP1B1 than CPIII, whereas GCDCA-S and TCDCA-S were more selective to OATP1B3. OATP1B1 and OATP1B3 equally contributed to hepatic uptake of GDCA-S. The mechanistic static model, incorporating the fraction transported of CPI/III estimated by RAF and in vivo elimination data, predicted several perpetrator interactions with CPI/III. Overall, RAF method combined with pharmacogenomic and DDI studies is a useful tool to determine the selectivity of transporter biomarkers and facilitate the selection of appropriate biomarkers for DDI evaluation. SIGNIFICANCE STATEMENT: The authors developed a new relative activity factor (RAF) method to quantify the contribution of hepatic uptake transporters organic anion transporting polypeptide (OATP)1B1, OATP1B3, OATP2B1, and sodium taurocholate co-transporting polypeptide (NTCP) on several OATP1B biomarkers and evaluated their predictive value on drug-drug interactions (DDI). These studies suggest that the RAF method is a useful tool to determine the selectivity of transporter biomarkers. This method combined with pharmacogenomic and DDI studies will mechanistically facilitate the selection of appropriate biomarkers for DDI prediction.
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Affiliation(s)
- Grace Hoyee Chan
- ADME and Discovery Toxicity, Merck & Co., Inc., Rahway, New Jersey
| | - Robert Houle
- ADME and Discovery Toxicity, Merck & Co., Inc., Rahway, New Jersey
| | - Jinghui Zhang
- ADME and Discovery Toxicity, Merck & Co., Inc., Rahway, New Jersey
| | - Ravi Katwaru
- ADME and Discovery Toxicity, Merck & Co., Inc., Rahway, New Jersey
| | - Yang Li
- ADME and Discovery Toxicity, Merck & Co., Inc., Rahway, New Jersey
| | - Xiaoyan Chu
- ADME and Discovery Toxicity, Merck & Co., Inc., Rahway, New Jersey
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Chen CP, Wu FT, Pan YT, Wu PS, Wang W. Mosaicism for a 12p12.1p12.2 microdeletion with a normal euploid cell line at amniocentesis in a pregnancy with a favorable outcome and postnatal decrease of the aneuploid cell line with microdeletion. Taiwan J Obstet Gynecol 2023; 62:757-760. [PMID: 37679009 DOI: 10.1016/j.tjog.2023.07.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/04/2023] [Indexed: 09/09/2023] Open
Abstract
OBJECTIVE We present mosaicism for a 12p12.1p12.2 microdeletion with a normal euploid cell line at amniocentesis in a pregnancy with a favorable outcome and postnatal decrease of the aneuploid cell line with microdeletion. CASE REPORT A 35-year-old woman, gravida 2, para 1, underwent amniocentesis at 17 weeks of gestation because of advanced maternal age. Amniocentesis revealed mosaic 46,XY,del (12) (p11.2p12), and array comparative genomic hybridization (aCGH) revealed arr Xp22.31 × 2 mat, 12p12.2p12.1 × 1 [0.36]dn with a 4.15-Mb 36% mosaicism for a 12p12.1p12.2 microdeletion. At 22 weeks of gestation, she underwent cord blood sampling of which aCGH revealed arr Xp22.31 × 2 mat, 12p12.2p12.1 × 1 [0.34]dn with a 4.24-Mb 34% mosaicism for a 12p12.1p12.2 microdeletion. Prenatal ultrasound findings were unremarkable. She was referred for genetic counseling, and continuing pregnancy was advised. A 2990-g male baby was delivered at 38 weeks of gestation with no phenotypic abnormality. When follow-up at age 1½ months, the neonate was phenotypically normal. The karyotype of peripheral blood was 46,XY. aCGH analysis on the DNA extracted from peripheral blood revealed the result of arr 12p12.1p12.2 (20, 367, 240-24,489,386) × 1.87, arr Xp22.31 (6,488,721-8,097,511) × 2.0 [GRCh37 (hg19)] with 10-15% (log2 ratio = 0.1) mosaicism for a 4.122-Mb 12p12.1-p12.2 microdeletion encompassing 17 OMIM genes of PDE3A, SLCO1C1, SLCO1B3, SLCO1B1, IAPP, PYROXD1, RECQL, GOLT1B, SPX, GYS2, LDHB, KCNJ8, ABCCP, CMAS, C2CD5, ETNK1 and SOX5 and a 1.609-Mb Xp22.31 duplication encompassing two OMIM genes of STS and VCX. Interphase fluorescence in situ hybridization (FISH) analysis on 104 buccal mucosal cells using 12p12.1-specific probe showed 17% (18/104 cells) mosaicism for a 12p12.1 deletion. Polymorphic DNA marker analysis on the DNA extracted from proband's blood and parental bloods determined a paternal origin of the mosaic 12p12.1 deletion. CONCLUSION Mosaicism for a 12p12.1p12.2 microdeletion at amniocentesis with a normal euploid cell line can be a benign condition in association with a favorable fetal outcome and postnatal decrease of the aneuploid cell line with microdeletion.
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Affiliation(s)
- Chih-Ping Chen
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan; Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan; School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan; Institute of Clinical and Community Health Nursing, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Obstetrics and Gynecology, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Medical Laboratory Science and Biotechnology, College of Medical and Health Science, Asia University, Taichung, Taiwan.
| | - Fang-Tzu Wu
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | - Yen-Ting Pan
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | | | - Wayseen Wang
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
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9
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Wang Z, Chen X, Zhang J, Chen X, Peng J, Huang W. Based on disulfidptosis-related glycolytic genes to construct a signature for predicting prognosis and immune infiltration analysis of hepatocellular carcinoma. Front Immunol 2023; 14:1204338. [PMID: 37680641 PMCID: PMC10482091 DOI: 10.3389/fimmu.2023.1204338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 08/04/2023] [Indexed: 09/09/2023] Open
Abstract
Background Hepatocellular carcinoma (HCC) comprises several distinct molecular subtypes with varying prognostic implications. However, a comprehensive analysis of a prognostic signature for HCC based on molecular subtypes related to disulfidptosis and glycolysis, as well as associated metabolomics and the immune microenvironment, is yet to be fully explored. Methods Based on the differences in the expression of disulfide-related glycolytic genes (DRGGs), patients with HCC were divided into different subtypes by consensus clustering. Establish and verify a risk prognosis signature. Finally, the expression level of the key gene SLCO1B1 in the signature was evaluated using immunohistochemistry (IHC) and quantitative real-time PCR (qRT-PCR) in HCC. The association between this gene and immune cells was explored using multiplex immunofluorescence. The biological functions of the cell counting kit-8, wound healing, and colony formation assays were studied. Results Different subtypes of patients have specific clinicopathological features, prognosis and immune microenvironment. We identified seven valuable genes and constructed a risk-prognosis signature. Analysis of the risk score revealed that compared to the high-risk group, the low-risk group had a better prognosis, higher immune scores, and more abundant immune-related pathways, consistent with the tumor subtypes. Furthermore, IHC and qRT-PCR analyses showed decreased expression of SLCO1B1 in HCC tissues. Functional experiments revealed that SLCO1B1 overexpression inhibited the proliferation, migration, and invasion of HCC cells. Conclusion We developed a prognostic signature that can assist clinicians in predicting the overall survival of patients with HCC and provides a reference value for targeted therapy.
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Affiliation(s)
- Zhijian Wang
- Department of General Practice, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xuenuo Chen
- Department of Infectious Disease, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jia Zhang
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xuanxin Chen
- Department of Infectious Disease, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jiayi Peng
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wenxiang Huang
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Bi Y, Xing Y, Gui C, Tian Y, Zhang M, Yao Y, Hu G, Han L, He F, Zhang Y. Potential Involvement of Organic Anion Transporters in Drug Interactions with Shuganning Injection, a Traditional Chinese Patent Medicine. Planta Med 2023; 89:940-951. [PMID: 37236232 DOI: 10.1055/a-2085-2367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Traditional Chinese medicine injections have been widely used in China for the treatment of various diseases. Transporter-mediated drug-drug interactions are a major contributor to adverse drug reactions. However, the research on transporter-mediated Traditional Chinese medicine injection-drug interactions is limited. Shuganning injection is a widely used Traditional Chinese medicine injection for treating various liver diseases. In this study, we investigated the inhibitory effect of Shuganning injection and its four main ingredients (baicalin, geniposide, chlorogenic acid, and oroxylin A) on 9 drug transporters. Shuganning injection strongly inhibited organic anion transporter 1 and organic anion transporter 3 with IC50 values < 0.1% (v/v), and moderately inhibited organic anion transporter 2, organic anion transporting-polypeptide 1B1, and organic anion transporting-polypeptide 1B3 with IC50 values < 1.0%. Baicalin, the most abundant bioactive ingredient in the Shuganning injection, was identified as both an inhibitor and substrate of organic anion transporter 1, organic anion transporter 3, and organic anion transporting-polypeptide 1B3. Oroxylin A had the potential to act as both an inhibitor and substrate of organic anion transporting-polypeptide 1B1 and organic anion transporting-polypeptide 1B3. In contrast, geniposide and chlorogenic acid had no significant inhibitory effect on drug transporters. Notably, Shuganning injection markedly altered the pharmacokinetics of furosemide and atorvastatin in rats. Using Shuganning injection as an example, our findings support the implementation of transporter-mediated Traditional Chinese medicine injection-drug interactions in the development of Traditional Chinese medicine injection standards.
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Affiliation(s)
- Yajuan Bi
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P. R. China
| | - Yanchao Xing
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, P. R. China
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, P. R. China
| | - Chunshan Gui
- College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, P. R. China
| | - Yiqing Tian
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P. R. China
| | - Mingzhe Zhang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P. R. China
| | - Yao Yao
- School of Integrative Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, P. R. China
| | - Ge Hu
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P. R. China
| | - Lifeng Han
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, P. R. China
| | - Feng He
- School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang, Guizhou, P. R. China
| | - Youcai Zhang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P. R. China
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11
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Rhee EP, Surapaneni AL, Schlosser P, Alotaibi M, Yang YN, Coresh J, Jain M, Cheng S, Yu B, Grams ME. A genome-wide association study identifies 41 loci associated with eicosanoid levels. Commun Biol 2023; 6:792. [PMID: 37524825 PMCID: PMC10390489 DOI: 10.1038/s42003-023-05159-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 07/20/2023] [Indexed: 08/02/2023] Open
Abstract
Eicosanoids are biologically active derivatives of polyunsaturated fatty acids with broad relevance to health and disease. We report a genome-wide association study in 8406 participants of the Atherosclerosis Risk in Communities Study, identifying 41 loci associated with 92 eicosanoids and related metabolites. These findings highlight loci required for eicosanoid biosynthesis, including FADS1-3, ELOVL2, and numerous CYP450 loci. In addition, significant associations implicate a range of non-oxidative lipid metabolic processes in eicosanoid regulation, including at PKD2L1/SCD and several loci involved in fatty acyl-CoA metabolism. Further, our findings highlight select clearance mechanisms, for example, through the hepatic transporter encoded by SLCO1B1. Finally, we identify eicosanoids associated with aspirin and non-steroidal anti-inflammatory drug use and demonstrate the substantial impact of genetic variants even for medication-associated eicosanoids. These findings shed light on both known and unknown aspects of eicosanoid metabolism and motivate interest in several gene-eicosanoid associations as potential functional participants in human disease.
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Affiliation(s)
- Eugene P Rhee
- Nephrology Division and Endocrine Unit, Massachusetts General Hospital, Boston, MA, USA.
| | - Aditya L Surapaneni
- Division of Precision Medicine, New York University School of Medicine, New York, NY, USA
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Pascal Schlosser
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Mona Alotaibi
- Department of Medicine, University of California San Diego, San Diego, CA, USA
| | - Yueh-Ning Yang
- Department of Epidemiology, Human Genetics & Environmental Sciences and Human Genetics Center, School of Public Health, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Josef Coresh
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Mohit Jain
- Department of Medicine, University of California San Diego, San Diego, CA, USA
| | - Susan Cheng
- National Heart, Lung and Blood Institute's and Boston University's Framingham Heart Study, Framingham, MA, USA
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Bing Yu
- Department of Epidemiology, Human Genetics & Environmental Sciences and Human Genetics Center, School of Public Health, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Morgan E Grams
- Division of Precision Medicine, New York University School of Medicine, New York, NY, USA.
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA.
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12
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Zobeck M, Bernhardt MB, Kamdar KY, Rabin KR, Lupo PJ, Scheurer ME. Novel and replicated clinical and genetic risk factors for toxicity from high-dose methotrexate in pediatric acute lymphoblastic leukemia. Pharmacotherapy 2023; 43:205-214. [PMID: 36764694 PMCID: PMC10085626 DOI: 10.1002/phar.2779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 01/20/2023] [Accepted: 01/25/2023] [Indexed: 02/12/2023]
Abstract
STUDY OBJECTIVE Methotrexate (MTX) is a key component of treatment for high-risk pediatric acute lymphoblastic leukemia (ALL) but may cause acute kidney injury and prolonged hospitalization due to delayed clearance. The purpose of this study is to identify clinical and genetic factors that may predict which children are at risk for creatinine increase and prolonged MTX clearance. DESIGN We conducted a single-center, retrospective cohort study of pediatric patients with ALL who received 4000-5000 mg/m2 of MTX. Measurements We performed germline genotyping to determine genetic ancestry and allele status for 49 single nucleotide polymorphisms (SNPs) identified from the literature as related to MTX disposition. Bayesian hierarchical ordinal regression models for creatinine increase and for prolonged MTX clearance were developed. MAIN RESULTS Hispanic ethnicity, body mass index (BMI) < 3%, BMI between 85%-95%, and Native American genetic ancestry were found to be associated with an increased risk for creatinine elevation. Older age, Black race, and use of the intensive monitoring protocol were associated with a decreased risk for creatinine elevation. Older age, B- compared to T-ALL, and the minor alleles of rs2838958/SLC19A1 and rs7317112/ABCC4 were associated with an increased risk for delayed clearance. Black race, MTX dose reduction, and the minor allele of rs2306283/SLCO1B1 were found to be associated with a decreased risk for delayed clearance. CONCLUSIONS These predictors of MTX toxicities may allow for more precise individualized toxicity risk prediction.
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Affiliation(s)
- Mark Zobeck
- Baylor College of Medicine and Texas Children’s Hospital, Houston, Texas, USA
| | - M. Brooke Bernhardt
- Baylor College of Medicine and Texas Children’s Hospital, Houston, Texas, USA
| | - Kala Y. Kamdar
- Baylor College of Medicine and Texas Children’s Hospital, Houston, Texas, USA
| | - Karen R. Rabin
- Baylor College of Medicine and Texas Children’s Hospital, Houston, Texas, USA
| | - Philip J. Lupo
- Baylor College of Medicine and Texas Children’s Hospital, Houston, Texas, USA
| | - Michael E. Scheurer
- Baylor College of Medicine and Texas Children’s Hospital, Houston, Texas, USA
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Biswas M, Jinda P, Sukasem C. Pharmacogenomics in Asians: Differences and similarities with other human populations. Expert Opin Drug Metab Toxicol 2023; 19:27-41. [PMID: 36755439 DOI: 10.1080/17425255.2023.2178895] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 02/07/2023] [Indexed: 02/10/2023]
Abstract
INTRODUCTION Various pharmacogenomic (PGx) variants differ widely in different ethnicities. and clinical outcomes associated with these variants may also be substantially varied. Literature was searched in different databases, i.e. PubMed, ScienceDirect, Web of Science, and PharmGKB, from inception to 30 June 2022 for this review. AREAS COVERED Certain PGx variants were distinctly varied in Asian populations compared to the other human populations, e.g. CYP2C19*2,*3,*17; CYP2C9*2,*3; CYP2D6*4,*5,*10,*41; UGT1A1*6,*28; HLA-B*15:02, HLA-B*15:21, HLA-B*58:01, and HLA-A*31:01. However, certain other variants do not vary greatly between Asian and other ethnicities, e.g. CYP3A5*3; ABCB1, and SLCO1B1*5. As evident in this review, the risk of major adverse cardiovascular events (MACE) was much stronger in Asian patients taking clopidogrel and who inherited the CYP2C19 loss-of-function alleles, e.g. CYP2C19*2 and*3, when compared to the western/Caucasian patients. Additionally, the risk of carbamazepine-induced severe cutaneous adverse drug reactions (SCARs) for the patients inheriting HLA-B*15:02 and HLA-B*15:21 alleles varied significantly between Asian and other ethnicities. In contrast, both Caucasian and Asian patients inheriting the SLCO1B1*5 variant possessed a similar magnitude of muscle toxicity, i.e. myopathy. EXPERT OPINION Asian countries should take measures toward expanding PGx research, as well as initiatives for the purposes of obtaining clinical benefits from this newly evolving and economically viable treatment model.
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Affiliation(s)
- Mohitosh Biswas
- Department of Pharmacy, University of Rajshahi, 6205, Rajshahi, Bangladesh
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, 10400, Bangkok, Thailand
- Laboratory for Pharmacogenomics, Ramathibodi Hospital, Somdech Phra Debaratana Medical Center SDMC, 10400, Bangkok, Thailand
| | - Pimonpan Jinda
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, 10400, Bangkok, Thailand
- Laboratory for Pharmacogenomics, Ramathibodi Hospital, Somdech Phra Debaratana Medical Center SDMC, 10400, Bangkok, Thailand
| | - Chonlaphat Sukasem
- Division of Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, 10400, Bangkok, Thailand
- Laboratory for Pharmacogenomics, Ramathibodi Hospital, Somdech Phra Debaratana Medical Center SDMC, 10400, Bangkok, Thailand
- Pharmacogenomics and Precision Medicine Clinic, Bumrungrad Genomic Medicine Institute (BGMI), Bumrungrad International Hospital, 10110, Bangkok, Thailand
- MRC Centre for Drug Safety Science, Department of Pharmacology and Therapeutics, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, L69 3GL, Liverpool, UK
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Raymond M, Critchlow E, Rice SM, Wodoslawsky S, Berger SI, Hegde M, Empey PE, Al-Kouatly HB. Fetal pharmacogenomics: A promising addition to complex neonatal care. Mol Genet Metab 2022; 137:140-145. [PMID: 36029725 DOI: 10.1016/j.ymgme.2022.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 08/06/2022] [Accepted: 08/07/2022] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Pharmacogenomics (PGx) characterizes genetic variation in medication response. 85-95% of the population carries actionable PGx variants. No prior studies have demonstrated the application and feasibility of PGx in prenatal testing. We assessed parental desire for PGx findings from fetal exome sequencing (ES), evaluated PGx variants, and reviewed implications for medically complex neonates. METHODS A prospective cohort undergoing ES for nonimmune hydrops fetalis were offered PGx results as a secondary finding. Seven pharmacogenes with Level A evidence, defined by Clinical Pharmacogenetics Implementation Consortium (CPIC) guidelines, were tested and reported to patients and referring providers. Medication administration records were reviewed. RESULTS Most participants (36/40, 90%) desired PGx testing. 32/36 (89%) had potentially actionable PGx diplotypes in six genes: CYP2C19 (20/36, 56%), CYP2C9 (16/36, 44%), CYP2D6 (10/36, 28%), SLCO1B1 (13/36, 36%), TPMT (6/36, 17%), UGT1A1 (4/36, 11%). 12/13 (92%) live births had PGx variants. Neonatal chart review indicated that three medications with CPIC Level A evidence were administered to four neonates. None of the patients received a medication that aligned with an actionable pharmacogenetic variant as defined by Level A CPIC guidance. CONCLUSION Most participants opted to receive PGx results. 89% had actionable variants, consistent with population estimates. Obtaining fetal PGx data is feasible for medically complex neonates. Further studies are needed for broad clinical application of PGx in fetuses with major congenital abnormalities. Our study demonstrates the potential of PGx as useful preemptive clinical information that could be obtained at the time of fetal exome sequencing for other indications. CLINICALTRIALS gov Registration: NCT03911531.
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Affiliation(s)
- Megan Raymond
- Department of Obstetrics and Gynecology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Elizabeth Critchlow
- Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, PA, USA
| | - Stephanie M Rice
- Department of Obstetrics and Gynecology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Sascha Wodoslawsky
- Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, PA, USA
| | - Seth I Berger
- Center for Genetic Medicine Research at Children's National, Washington, DC, USA
| | | | - Philip E Empey
- Department of Pharmacy and Therapeutics, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Huda B Al-Kouatly
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Thomas Jefferson University, Philadelphia, PA, USA.
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Prieto-Peña D, Ocejo-Vinyals JG, Mazariegos-Cano J, Pelayo-Negro AL, Remuzgo-Martínez S, Genre F, García-Dorta A, Renuncio-García M, Martínez-Taboada VM, García-Ibarbia C, Sánchez-Martín J, López-Hoyos M, Blanco R, González-Gay MA, Hernández JL. Epidemiological and genetic features of anti-3‑hydroxy-3-methylglutaryl-CoA reductase necrotizing myopathy: Single-center experience and literature review. Eur J Intern Med 2022; 101:86-92. [PMID: 35487805 DOI: 10.1016/j.ejim.2022.04.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 04/09/2022] [Accepted: 04/12/2022] [Indexed: 11/19/2022]
Abstract
OBJECTIVE To characterize the demographic, genetic, clinical, and serological features of patients with anti-3‑hydroxy-3-methylglutaryl-CoA reductase (HMGCR) immune-mediated necrotizing myopathy (IMNM) in a region of northern Spain. METHODS Study of all patients diagnosed with anti-HMGCR IMNM during a 5-year period at a reference hospital in northern Spain. Besides clinical and laboratory data, we analyzed the genetic influence of HLA genes and the rs4149056 (c.521T>C) single nucleotide polymorphism (SNP) in the SLCO1B1 gene. RESULTS 8 patients (5 women, 3 men) with a mean ± SD age of 64.9 ± 7.3 years, fulfilled the criteria for anti-HMGCR IMNM. The incidence rate was 0.6 per 100.000 person-years and the prevalence 3 per 100.000 population. All patients had been exposed to statins. All of them had predominant lower limb proximal and symmetric muscle weakness that was severe in 2 and had elevated serum CK levels with a median [IQR] of 4488 [2538-9194] IU/L. Serum 25‑hydroxy vitamin D levels were decreased in all patients in whom it was determined. The 3 patients with a previous diagnosis of hypothyroidism had abnormal levels of TSH at the time of diagnosis. All patients experienced improvement with different schemes of immunosuppressive therapy. Noteworthy, 7 of 8 patients carried the HLA-DRB1*11 allele. The frequency of the rs4149056 C allele in the SLCO1B1 gene (12.5%) was similar to that of the general population. CONCLUSION In northern Spain, anti-HMGCR IMNM preferentially affects people over 50 years of age who are carriers of the HLA-DRB1*11 allele and take statins. Both low vitamin D levels and hypothyroidism may play a potential predisposing role in the development of this disease.
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Affiliation(s)
- Diana Prieto-Peña
- Department of Rheumatology, Hospital Universitario Marqués de Valdecilla, Santander, Spain; Research Group on Genetic Epidemiology and Atherosclerosis in Systemic Diseases and Metabolic Bone Diseases of the Musculoskeletal System, IDIVAL, Santander, Spain.
| | - Javier G Ocejo-Vinyals
- Department of Immunology, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain
| | - Joel Mazariegos-Cano
- Department of Internal Medicine, Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | - Ana L Pelayo-Negro
- Department of Neurology, Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | - Sara Remuzgo-Martínez
- Research Group on Genetic Epidemiology and Atherosclerosis in Systemic Diseases and Metabolic Bone Diseases of the Musculoskeletal System, IDIVAL, Santander, Spain
| | - Fernanda Genre
- Research Group on Genetic Epidemiology and Atherosclerosis in Systemic Diseases and Metabolic Bone Diseases of the Musculoskeletal System, IDIVAL, Santander, Spain
| | - Alicia García-Dorta
- Department of Rheumatology, Hospital Universitario de Canarias, Tenerife, Spain
| | - Mónica Renuncio-García
- Department of Immunology, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain
| | - Víctor M Martínez-Taboada
- Department of Rheumatology, Hospital Universitario Marqués de Valdecilla, Santander, Spain; University of Cantabria, Santander, Spain
| | - Carmen García-Ibarbia
- Department of Internal Medicine, Hospital Universitario Marqués de Valdecilla, Santander, Spain
| | - Julio Sánchez-Martín
- Department of Rheumatology, Hospital Universitario Marqués de Valdecilla, Santander, Spain; Research Group on Genetic Epidemiology and Atherosclerosis in Systemic Diseases and Metabolic Bone Diseases of the Musculoskeletal System, IDIVAL, Santander, Spain
| | - Marcos López-Hoyos
- Department of Immunology, Hospital Universitario Marqués de Valdecilla-IDIVAL, Santander, Spain; University of Cantabria, Santander, Spain
| | - Ricardo Blanco
- Department of Rheumatology, Hospital Universitario Marqués de Valdecilla, Santander, Spain; Research Group on Genetic Epidemiology and Atherosclerosis in Systemic Diseases and Metabolic Bone Diseases of the Musculoskeletal System, IDIVAL, Santander, Spain
| | - Miguel A González-Gay
- Department of Rheumatology, Hospital Universitario Marqués de Valdecilla, Santander, Spain; Research Group on Genetic Epidemiology and Atherosclerosis in Systemic Diseases and Metabolic Bone Diseases of the Musculoskeletal System, IDIVAL, Santander, Spain; University of Cantabria, Santander, Spain; Cardiovascular Pathophysiology and Genomics Research Unit, School of Physiology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
| | - José L Hernández
- Research Group on Genetic Epidemiology and Atherosclerosis in Systemic Diseases and Metabolic Bone Diseases of the Musculoskeletal System, IDIVAL, Santander, Spain; Department of Internal Medicine, Hospital Universitario Marqués de Valdecilla, Santander, Spain; University of Cantabria, Santander, Spain.
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Parajuli RP, Goodrich JM, Chan HM, Lemire M, Ayotte P, Hegele RA, Basu N. Variation in biomarker levels of metals, persistent organic pollutants, and omega-3 fatty acids in association with genetic polymorphisms among Inuit in Nunavik, Canada. Environ Res 2021; 200:111393. [PMID: 34062203 DOI: 10.1016/j.envres.2021.111393] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 05/13/2021] [Accepted: 05/22/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Biomarker measures of contaminant exposure and nutrient status can help increase understanding of the risks and benefits associated with the consumption of traditional foods by Inuit. While gene-environment and gene-nutrient interactions may help explain variations in biomarker measures, the role of genetic polymorphisms is largely understudied especially for vulnerable sub-populations. OBJECTIVE The aim of this study was to characterize the relationship between single nucleotide polymorphisms (SNPs) in key genes and blood concentrations of environmental chemicals and nutrients among Inuit. METHODS Blood samples from 665 individuals who participated in the Qanuippitaa Survey (Nunavik, Canada) in 2004 were analyzed for toxicants and nutrients. DNA was extracted and 140 SNPs in classes relevant to the toxicokinetics and/or toxicodynamics of the target contaminants and nutrients, and/or are involved in cardiovascular health and lipid metabolism were genotyped using the Sequenom iPLEX Gold platform. RESULTS Geometric means (μg/L) of mercury (Hg), cadmium (Cd), lead (Pb), DDE, PCB-153, and selenium (Se) were 11.1, 2.8, 39.9, 2.9, 1.1 and 301.2, respectively. Red blood cell membrane levels of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) were 5.1%/total fatty acid (TFA) and 1.3%/TFA respectively. Out of 106 SNPs which met our inclusion criteria, biomarker levels for Hg, Cd, Pb, DDE, PCB-153, DHA, and EPA differed (p < 0.05) by genotype for 20, 13, 12, 19, 21, 9 and 8 SNPs, respectively. Following Bonferroni correction (p < 0.0005), only 9 SNPs remained significant (rs2274976 in MTHFR, rs174602 in FADS2, rs7115739 and rs74771917 in FADS3, rs713041 in GPX4, rs2306283 and rs4149056 in SLCO1B1, rs1885301 in ABCC2/MRP2, and rs4244285 in CYP2C19; 5 associated with Hg, 2 with Pb, 2 with DDE, 4 with PCB-153, 1 with DHA). CONCLUSIONS The findings suggest that polymorphisms in environmentally-responsive genes can influence biomarker levels of key toxicants and nutrients. While there are no immediate clinical or public health implications of these findings, we believe that such gene-environment and gene-nutrient studies provide a foundation that will inform and provide direction to future studies.
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Affiliation(s)
- Rajendra Prasad Parajuli
- Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, QC, Canada; Department of Zoology, Tribhuvan University, Kathmandu, Nepal
| | - Jaclyn M Goodrich
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Hing Man Chan
- Department of Biology, University of Ottawa, ON, Canada
| | - Melanie Lemire
- Département de Médecine Sociale et Préventive, Faculté de Médecine, Université Laval, QC, Canada
| | - Pierre Ayotte
- Département de Médecine Sociale et Préventive, Faculté de Médecine, Université Laval, QC, Canada
| | - Robert A Hegele
- Department of Medicine and Robarts Research Institute, Western University, ON, Canada
| | - Niladri Basu
- Faculty of Agricultural and Environmental Sciences, McGill University, Montreal, QC, Canada.
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Na Takuathung M, Sakuludomkan W, Koonrungsesomboon N. The Impact of Genetic Polymorphisms on the Pharmacokinetics and Pharmacodynamics of Mycophenolic Acid: Systematic Review and Meta-analysis. Clin Pharmacokinet 2021; 60:1291-1302. [PMID: 34105062 DOI: 10.1007/s40262-021-01037-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/11/2021] [Indexed: 01/14/2023]
Abstract
BACKGROUND Mycophenolic acid (MPA) is among the most commonly prescribed medications for immunosuppression following organ transplantation. Highly variable MPA exposure and drug response are observed among individuals receiving the same dosage of the drug. Identification of candidate genes whose polymorphisms could be used to predict MPA exposure and clinical outcome is of clinical value. OBJECTIVES This study aimed to determine the impact of genetic polymorphisms on the pharmacokinetics and pharmacodynamics of MPA in humans by means of a systematic review and meta-analysis. METHODS A systematic search was conducted on PubMed, EMBASE, Web of Sciences, Scopus, and the Cochrane Library databases. A meta-analysis was conducted to determine any associations between genetic polymorphisms and pharmacokinetic or pharmacodynamic parameters of MPA. Pooled-effect estimates were calculated by means of the random-effects model. RESULTS A total of 37 studies involving 3844 individuals were included in the meta-analysis. Heterozygous carriers of the UGT1A9 -275T>A polymorphism were observed to have a significantly lower MPA exposure than wild-type individuals. Four single nucleotide polymorphisms (SNPs), namely UGT1A9 -2152C>T, UGT1A8 518C>G, UGT2B7 211G>T, and SLCO1B1 521T>C, were also significantly associated with altered MPA pharmacokinetics. However, none of the investigated SNPs, including SNPs in the IMPDH gene, were found to be associated with the clinical efficacy of MPA. The only SNP that was associated with adverse outcomes was SLCO1B3 344T>G. CONCLUSIONS The present systematic review and meta-analysis identified six SNPs that were significantly associated with pharmacokinetic variability or adverse effects of MPA. Our findings represent the basis for future research and clinical implications with regard to the role of pharmacogenetics in MPA pharmacokinetics and drug response.
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Affiliation(s)
- Mingkwan Na Takuathung
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, 110 Intawaroros Road, Sriphoom, Muang, Chiang Mai, 50200, Thailand
| | - Wannachai Sakuludomkan
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, 110 Intawaroros Road, Sriphoom, Muang, Chiang Mai, 50200, Thailand
| | - Nut Koonrungsesomboon
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, 110 Intawaroros Road, Sriphoom, Muang, Chiang Mai, 50200, Thailand.
- Musculoskeletal Science and Translational Research (MSTR) Center, , Chiang Mai University, Muang, Chiang Mai, Thailand.
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Padula AM, Yang W, Schultz K, Lee C, Lurmann F, Hammond SK, Shaw GM. Gene-environment interactions between air pollution and biotransformation enzymes and risk of birth defects. Birth Defects Res 2021; 113:676-686. [PMID: 33569925 PMCID: PMC8651049 DOI: 10.1002/bdr2.1880] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 01/13/2021] [Accepted: 01/16/2021] [Indexed: 12/25/2022]
Abstract
Genetic and environmental factors have been observed to influence risks for birth defects, though few studies have investigated gene-environment interactions. Our aim was to examine the interaction terms of gene variants in biotransformation enzyme pathways and air pollution exposures in relation to risk of several structural birth defects. We evaluated the role of ambient air pollutant exposure (nitrogen dioxide [NO2 ], nitrogen oxide, carbon monoxide, particulate matter <10 [PM10 ] and <2.5 [PM2.5 ] microns) during pregnancy and 104 gene variants of biotransformation enzymes from infant bloodspots or buccal cells in a California population-based case-control study in 1997-2006. Cases included cleft lip with or without cleft palate (N = 206), gastroschisis (N = 94), tetralogy of Fallot (N = 69), and dextro-transposition of the great arteries (d-TGA; N = 40) and were compared to 208 nonmalformed controls. Overall, the results were not consistent, though did highlight some associations for further investigation as indicated by Wald chi-square test p value <.1. Increased risk of cleft lip was associated with exposure to high PM10 and two CYP gene variants. High PM2.5 and the variant of SLCO1B1 was associated with increased risk of teratology of Fallot. Higher NO2 and two gene variants, CYP2A6 and SLC01B1, were associated with increased risk of d-TGA. Results for gastroschisis were inconsistent in direction and across pollutants. These exploratory results suggest that some individuals based on their genetic background may be more susceptible to the adverse effects of air pollution.
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Affiliation(s)
- Amy M. Padula
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, San Francisco, CA USA
| | - Wei Yang
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA USA
| | - Kathleen Schultz
- University of California, San Francisco Benioff Children’s Hospital Oakland, Oakland, CA USA
| | - Cecilia Lee
- University of California, San Francisco Benioff Children’s Hospital Oakland, Oakland, CA USA
| | | | - S. Katharine Hammond
- Department of Environmental Health Sciences, University of California, Berkeley, Berkeley, CA USA
| | - Gary M. Shaw
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA USA
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Wang D, Li X, Lai P, Zheng L. [Analysis of genetic variants in a case with Rotor syndrome]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2021; 38:359-362. [PMID: 33834465 DOI: 10.3760/cma.j.cn511374-20200131-00051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
OBJECTIVE To explore the genetic basis for a patient featuring Rotor syndrome. METHODS Clinical data of the patient was collected. Whole exome sequencing (WES) based on high-throughput sequencing technology was carried out. Long-interspersed element-1 (LINE-1) insertion in intron 5 of the SLCO1B3 gene was detected by using tri-primer single tube PCR. RESULTS WES revealed that the patient has carried homozygous c.1738C>T nonsense variants of the SLCO1B1 gene. He was also found to harbor a homozygous insertion of LINE-1 in intron 5 of the SLCO1B3 gene, which has caused skipping of exon 5 or exons 5 to 7 and introduced a stop codon in the SLCO1B3 transcript. CONCLUSION The homozygous c.1738C>T variant of the SLCO1B1 gene and homozygous insertion of LINE-1 in intron 5 of the SLCO1B3 gene probably underlay the Rotor syndrome in this patient.
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Affiliation(s)
- Dayan Wang
- Department of Pediatrics, Jinhua Central Hospital, Jinhua, Zhejiang 321000, China.
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20
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Kayesh R, Farasyn T, Crowe A, Liu Q, Pahwa S, Alam K, Neuhoff S, Hatley O, Ding K, Yue W. Assessing OATP1B1- and OATP1B3-Mediated Drug-Drug Interaction Potential of Vemurafenib Using R-Value and Physiologically-Based Pharmacokinetic Models. J Pharm Sci 2020; 110:314-324. [PMID: 32590030 DOI: 10.1016/j.xphs.2020.06.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 06/14/2020] [Accepted: 06/15/2020] [Indexed: 11/19/2022]
Abstract
Organic anion transporting polypeptides (OATP) 1B1 and OATP1B3 are important determinants of transporter-mediated drug-drug interactions (DDIs). Current studies assessed the OATP1B1 and OATP1B3-mediated DDI potential of vemurafenib, a kinase inhibitor drug with high protein binding and low aqueous solubility, using R-value and physiologically-based pharmacokinetic (PBPK) models. The total half-maximal inhibitory concentration (IC50,total) values of vemurafenib against OATP1B1 and OATP1B3 were determined in 100% human plasma in transporter-overexpressing human embryonic kidney 293 stable cell lines. The unbound fraction of vemurafenib in human plasma before (fu,plasma) and after addition into the uptake assay plate (fu,plasma,inc) were determined by rapid equilibrium dialysis. There was no statistically significant difference between fu,plasma and fu,plasma,inc. Vemurafenib IC50,total values against OATP1B1 and OATP1B3 are 175 ± 82 and 231 ± 26 μM, respectively. The R-values [R = 1 + fu,plasma × Iin,max/(fu,plasma,inc × IC50,total)] were then simplified as R = 1+Iin,max/IC50,total, and were 1.76 and 1.57 for OATP1B1 and OATP1B3, respectively. The simulated pravastatin AUC ratio was 1.28 when a single dose of pravastatin (40 mg) was co-administered with vemurafenib (960 mg, twice daily) at steady-state, compared to pravastatin alone. Both R-value and PBPK models predict that vemurafenib has the potential to cause OATP1B1- and OATP1B3-mediated DDIs.
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Affiliation(s)
- Ruhul Kayesh
- Department of Pharmaceutical Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104
| | - Taleah Farasyn
- Department of Pharmaceutical Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104
| | - Alexandra Crowe
- Department of Pharmaceutical Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104
| | - Qiang Liu
- ARL Bio Pharma, Oklahoma City, Oklahoma 73104
| | - Sonia Pahwa
- Department of Pharmaceutical Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104
| | - Khondoker Alam
- Department of Pharmaceutical Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104
| | - Sibylle Neuhoff
- Certara UK Ltd, Simcyp Division, Level 2-Acero, 1 Concourse Way, Sheffield, S1 2BJ United Kingdom
| | - Oliver Hatley
- Certara UK Ltd, Simcyp Division, Level 2-Acero, 1 Concourse Way, Sheffield, S1 2BJ United Kingdom
| | - Kai Ding
- Department of Biostatistics and Epidemiology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104
| | - Wei Yue
- Department of Pharmaceutical Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104.
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Chiney MS, Ng J, Gibbs JP, Shebley M. Quantitative Assessment of Elagolix Enzyme-Transporter Interplay and Drug-Drug Interactions Using Physiologically Based Pharmacokinetic Modeling. Clin Pharmacokinet 2020; 59:617-627. [PMID: 31713224 PMCID: PMC7217817 DOI: 10.1007/s40262-019-00833-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
INTRODUCTION Elagolix is approved for the management of moderate-to-severe pain associated with endometriosis. The aim of this analysis was to develop a physiologically based pharmacokinetic (PBPK) model that describes the enzyme-transporter interplay involved in the disposition of elagolix and to predict the magnitude of drug-drug interaction (DDI) potential of elagolix as an inhibitor of P-glycoprotein (P-gp) and inducer of cytochrome P450 (CYP) 3A4. METHODS A PBPK model (SimCYP® version 15.0.86.0) was developed using elagolix data from in vitro, clinical PK and DDI studies. Data from DDI studies were used to quantify contributions of the uptake transporter organic anion transporting polypeptide (OATP) 1B1 and CYP3A4 in the disposition of elagolix, and to quantitatively assess the perpetrator potential of elagolix as a CYP3A4 inducer and P-gp inhibitor. RESULTS After accounting for the interplay between elagolix metabolism by CYP3A4 and uptake by OATP1B1, the model-predicted PK parameters of elagolix along with the DDI AUC∞ and Cmax ratios, were within 1.5-fold of the observed data. Based on model simulations, elagolix 200 mg administered twice daily is a moderate inducer of CYP3A4 (approximately 56% reduction in midazolam AUC∞). Simulations of elagolix 150 mg administered once daily with digoxin predicted an increase in digoxin Cmax and AUC∞ by 68% and 19%, respectively. CONCLUSIONS A PBPK model of elagolix was developed, verified, and applied to characterize the disposition interplay between CYP3A4 and OATP1B1, and to predict the DDI potential of elagolix as a perpetrator under dosing conditions that were not tested clinically. PBPK model-based predictions were used to support labeling language for DDI recommendations of elagolix.
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Affiliation(s)
- Manoj S Chiney
- Clinical Pharmacology and Pharmacometrics, AbbVie, Department R4PK, Building AP31-3, 1 North Waukegan Road, North Chicago, IL, 60064, USA
| | - Juki Ng
- Clinical Pharmacology and Pharmacometrics, AbbVie, Department R4PK, Building AP31-3, 1 North Waukegan Road, North Chicago, IL, 60064, USA
| | - John P Gibbs
- Clinical Pharmacology and Pharmacometrics, AbbVie, Department R4PK, Building AP31-3, 1 North Waukegan Road, North Chicago, IL, 60064, USA
| | - Mohamad Shebley
- Clinical Pharmacology and Pharmacometrics, AbbVie, Department R4PK, Building AP31-3, 1 North Waukegan Road, North Chicago, IL, 60064, USA.
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22
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Chen M, Qu BX, Chen XL, Hu HH, Jiang HD, Yu LS, Zhou Q, Zeng S. Construction of HEK293 cells stably expressing wild-type organic anion transporting polypeptide 1B1 (OATP1B1*1a) and variant OATP1B1*1b and OATP1B1*15. Pharmazie 2016; 71:337-339. [PMID: 27455553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A transgenic cell line stably expressing the human organic anion transporting polypeptide (OATP1B1) was established. Human Embryonic Kidney 293 (HEK293) cell line stably expressing OATP1B1*1a sequence was amplified through PCR with the extracted total RNA as templates from human liver, then subcloned into the plasmid pMD19-T and verified by sequencing. OATP1B1*1b/OATP1B1*15 mutant sequences were obtained by site-directed mutation PCR with pMD19-T/ OATP1B1*1a as templates. The plasmids pcDNA3.1(+)/OATP1B1*1a, *1b and *15 were constructed and transfected into HEK293 cell line using Lipofectamine 2000 transfection reagent. Several stable transfected clones were obtained after selection with G418. Using rosuvastatin as a probe substrate of OATP1B1, the intracellular rosuvastatin accumulation in HEK293 and HEK-OATP1B1*1a, *1b and *15 monoclone cells were validated by a ultra-performance liquid chromatography-tandem mass spectrometry. OATP1B1 mRNA and protein expression were detected by RT-PCR and Western blot, respectively. The results from RT-PCR, rosuvastatin uptake and Western blot assay indicated that human OATP1B1 was highly expressed in transfected cells compared with controls. The HEK-293 cell lines stably expressing human OATP1B1-wild and variant (HEK-OATP1B1, *1b and *15) are potential models to study drug transport in vitro.
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23
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Wen JH, Wei XH, Cheng XH, Zuo R, Peng HW, Lü YN, Zhou J, Zheng XL, Cai J, Xiong YQ, Cao L. [OATP1B1 in drug-drug interactions between traditional Chinese medicine Danshensu and rosuvastatin]. Yao Xue Xue Bao 2016; 51:75-79. [PMID: 27405165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The study was designed to explore the drug-drug interactions mechanisms mediated by OATP1B1 between traditional Chinese medicine Danshensu and rosuvastatin. First, the changes of rosuvastatin pharmacokinetics were investigated in presence of Danshensu in rats. Then, the primary rat hepatocytes model was established to explore the effects of Danshensu on the uptake of rosuvastatin by hepatocytes. Finally, HEK293T cells with overexpression of OATP1B1*a and OATP1B1*5 were established using a lentiviral delivery system to explore the effects of Danshensu on the uptake of rosuvastatin. Rosuvastatin pharmacokinetic parameters of C(max0, AUCO(0-t), AUC(0-∞) were increased about 123%, 194% and 195%, by Danshensu in rats, while the CL z/F value was decreased by 60%. Uptake of rosuvastatin in the primary rat hepatocytes was decreased by 3.13%, 41.15% and 74.62%, respectively in the presence of 20, 40 and 80 μmol x L(-1) Danshensu. The IC50 parameters was (53.04 ± 2.43) μmol x L(-1). The inhibitory effect of Danshensu on OATP1B1 mediated transport of rosuvastatin was related to the OATP1B1 gene type. In OATP1B1*5-HEK293T mutant cells, transport of rosuvastatin were reduced by (39.11 ± 4.94)% and (63.61 ± 3.94)%, respectively, by Danshensu at 1 and 10 μmol x L(-1). While transport of rosuvastatin was reduced by (8.22 ± 2.40)% and (11.56 ± 3.04)% and in OATP1B1*1a cells, respectively. Danshensu significantly altered the pharmacokinetics of rosuvastatin in rats, which was related to competitive inhibition of transport by OATPJBI. Danshensu exhibited a significant activity in the inhibition of rosuvastatin transport by OATP1B1*5-HEK293T, but not by OATP1B1*1a, suggesting a dependence on OATP1B1 sequence.
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Visentin M, Stieger B, Merz M, Kullak-Ublick GA. Octreotide inhibits the bilirubin carriers organic anion transporting polypeptides 1B1 and 1B3 and the multidrug resistance-associated protein 2. J Pharmacol Exp Ther 2015; 355:145-51. [PMID: 26330539 DOI: 10.1124/jpet.115.227546] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 08/31/2015] [Indexed: 08/30/2023] Open
Abstract
The somatostatin analog octreotide can lead to hyperbilirubinemia without evidence of liver injury. Here we investigate whether octreotide inhibits the main sinusoidal/canalicular bilirubin carriers and whether it is a transport substrate. Octreotide showed the most potent inhibitory effect toward OATP1B1-mediated transport and weaker inhibition for OATP1B3- and MRP2-mediated transport. Octreotide had no effect on OATP2B1-mediated transport. Octreotide inhibited [(3)H]estradiol-17-β-glucuronide (E17βG) influx mediated by OATP1B1, 1B3, and multidrug resistance-associated protein 2 (MRP2) in a concentration-dependent manner, and the IC50 values were computed to be 23 μM (95% confidence interval [CI] 18-29), 68 μM (95% CI 50-91), and 116.6 μM (95% CI 74.5-182.4), respectively. The interaction between octreotide and OATP1B1 was further studied. Inhibition of [(3)H]E17βG OATP1B1-mediated transport was purely competitive with no changes in maximum transport capacity (Vmax) and a twofold Km increase when the influx kinetics of [(3)H]E17βG were measured in the presence of octreotide (8.8 ± 3.1 versus 4.4 ± 1.2 μM, P = 0.03). The inhibition constant (Ki) of octreotide for the transport of [(3)H]E17βG was calculated at 33.5 ± 5.5 μM. Uptake of radiolabeled octreotide by OATP1B1-CHO cells was higher than in wild-type CHO cells and nonlabeled octreotide at the extracellular compartment was able to trans-stimulate the OATP1B1-mediated efflux of intracellular [(3)H]E17βG, suggesting that octreotide is a substrate of OATP1B1. In summary, this study shows interaction of octreotide on the human hepatocellular bilirubin transporters OATP1B1, OATP1B3, and MRP2, notably OATP1B1. These findings are in line with the clinical observation that a fraction of patients under treatment with octreotide exhibit hyperbilirubinemia.
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Affiliation(s)
- Michele Visentin
- Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, Switzerland (M.V., B.S., G.A.K.-U.); and Discovery and Investigative Safety, Novartis Institutes for BioMedical Research, Basel, Switzerland (M.M., G.A.K.-U.)
| | - Bruno Stieger
- Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, Switzerland (M.V., B.S., G.A.K.-U.); and Discovery and Investigative Safety, Novartis Institutes for BioMedical Research, Basel, Switzerland (M.M., G.A.K.-U.)
| | - Michael Merz
- Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, Switzerland (M.V., B.S., G.A.K.-U.); and Discovery and Investigative Safety, Novartis Institutes for BioMedical Research, Basel, Switzerland (M.M., G.A.K.-U.)
| | - Gerd A Kullak-Ublick
- Department of Clinical Pharmacology and Toxicology, University Hospital Zurich, Switzerland (M.V., B.S., G.A.K.-U.); and Discovery and Investigative Safety, Novartis Institutes for BioMedical Research, Basel, Switzerland (M.M., G.A.K.-U.)
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Kounnis V, Chondrogiannis G, Mantzaris MD, Tzakos AG, Fokas D, Papanikolaou NA, Galani V, Sainis I, Briasoulis E. Microcystin LR Shows Cytotoxic Activity Against Pancreatic Cancer Cells Expressing the Membrane OATP1B1 and OATP1B3 Transporters. Anticancer Res 2015; 35:5857-5865. [PMID: 26504008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Microcystin-LR (MC-LR) is a cyanobacterial cyclopeptide, known for its unique ability to cause acute liver injury. Its cellular uptake is facilitated by specific transmembrane organic anion-transporting polypeptides (OATPs) specifically OATP1B1 and 1B3. The objective of the present study was to investigate the expression of OATPs 1A2, 1B1 and 1B3 in pancreatic cancer cell lines BxPC-3 and MIA PACA-2 and assess their role in MC-LR-mediated cytotoxicity by using the novel xCELLigence system and flow cytometry. OATP1B1 and 1B3 were found to be expressed in both cell lines at both the mRNA and protein levels. The cytotoxic effects of MC-LR were proportionally related to the expression of these transporters. Moreover the cytotoxic potency of MC-LR was found superior to gemcitabine. Based on the expression of the organic anion transporting polypeptides 1B1 and 1B3 in pancreatic carcinoma tissue and cell lines and the potent cytotoxicity induced by MC-LR in vitro, we propose that this molecule could be held as structural basis for the development of novel targeted-compounds against pancreatic cancer.
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Affiliation(s)
- Valentinos Kounnis
- Molecular Oncology Laboratories, Oxford University, Department of Oncology, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, Oxford, U.K. Human Cancer Biobank Center, University of Ioannina, Ioannina, Greece
| | - Georgios Chondrogiannis
- Department of Anatomy-Histology-Embryology, Medical School, University of Ioannina, Ioannina, Greece
| | - Michalis D Mantzaris
- Laboratory of Biological Chemistry, Medical School, University of Ioannina, Ioannina, Greece
| | - Andreas G Tzakos
- Human Cancer Biobank Center, University of Ioannina, Ioannina, Greece Department of Chemistry, University of Ioannina, Ioannina, Greece
| | - Demosthenes Fokas
- Department of Materials Science and Engineering, University of Ioannina, Ioannina, Greece
| | - Nikolaos A Papanikolaou
- Laboratory of Biological Chemistry, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Vasiliki Galani
- Department of Anatomy-Histology-Embryology, Medical School, University of Ioannina, Ioannina, Greece
| | - Ioannis Sainis
- Human Cancer Biobank Center, University of Ioannina, Ioannina, Greece
| | - Evangelos Briasoulis
- Human Cancer Biobank Center, University of Ioannina, Ioannina, Greece Medical School, University of Ioannina, Ioannina, Greece
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Namgoong S, Cheong HS, Kim JO, Kim LH, Na HS, Koh IS, Chung MW, Shin HD. Comparison of genetic variations of the SLCO1B1, SLCO1B3, and SLCO2B1 genes among five ethnic groups. Environ Toxicol Pharmacol 2015; 40:692-697. [PMID: 26409184 DOI: 10.1016/j.etap.2015.08.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Revised: 08/30/2015] [Accepted: 08/31/2015] [Indexed: 06/05/2023]
Abstract
Organic anion-transporting polypeptide (OATP; gene symbol, SLCO) transporters are generally involved in the uptake of multiple drugs and their metabolites at most epithelial barriers. The pattern of single-nucleotide polymorphisms (SNPs) in these transporters may be determinants of interindividual variability in drug disposition and response. The objective of this study was to define the distribution of SNPs of three SLCO genes, SLCO1B1, SLCO1B3, and SLCO2B1, in a Korean population and other ethnic groups. The study was screened using the Illumina GoldenGate assay for genomic DNA from 450 interethnic subjects, including 11 pharmacogenetic core variants and 76 HapMap tagging SNPs. The genotype distribution of the Korean population was similar to East Asian populations, but significantly different from African American and European American cohorts. These interethnic differences will be useful information for prospective studies, including genetic association and pharmacogenetic studies of drug metabolism by SLCO families.
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Affiliation(s)
- Suhg Namgoong
- Department of Life Science, Sogang University, Seoul, Republic of Korea; Research Institute for Basic Science, Sogang University, Seoul, Republic of Korea
| | - Hyun Sub Cheong
- Research Institute for Basic Science, Sogang University, Seoul, Republic of Korea
| | - Ji On Kim
- Department of Life Science, Sogang University, Seoul, Republic of Korea; Research Institute for Basic Science, Sogang University, Seoul, Republic of Korea
| | - Lyoung Hyo Kim
- Department of Life Science, Sogang University, Seoul, Republic of Korea; Research Institute for Basic Science, Sogang University, Seoul, Republic of Korea
| | - Han Sung Na
- Clinical Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Osong Health Technology Administration Complex, Osong, Chungcheongbuk-do, Republic of Korea
| | - In Song Koh
- Department of Physiology, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Myeon Woo Chung
- Clinical Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Osong Health Technology Administration Complex, Osong, Chungcheongbuk-do, Republic of Korea.
| | - Hyoung Doo Shin
- Department of Life Science, Sogang University, Seoul, Republic of Korea; Research Institute for Basic Science, Sogang University, Seoul, Republic of Korea.
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Knop J, Misaka S, Singer K, Hoier E, Müller F, Glaeser H, König J, Fromm MF. Inhibitory Effects of Green Tea and (-)-Epigallocatechin Gallate on Transport by OATP1B1, OATP1B3, OCT1, OCT2, MATE1, MATE2-K and P-Glycoprotein. PLoS One 2015; 10:e0139370. [PMID: 26426900 PMCID: PMC4591125 DOI: 10.1371/journal.pone.0139370] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 09/12/2015] [Indexed: 11/18/2022] Open
Abstract
Green tea catechins inhibit the function of organic anion transporting polypeptides (OATPs) that mediate the uptake of a diverse group of drugs and endogenous compounds into cells. The present study was aimed at investigating the effect of green tea and its most abundant catechin epigallocatechin gallate (EGCG) on the transport activity of several drug transporters expressed in enterocytes, hepatocytes and renal proximal tubular cells such as OATPs, organic cation transporters (OCTs), multidrug and toxin extrusion proteins (MATEs), and P-glycoprotein (P-gp). Uptake of the typical substrates metformin for OCTs and MATEs and bromosulphophthalein (BSP) and atorvastatin for OATPs was measured in the absence and presence of a commercially available green tea and EGCG. Transcellular transport of digoxin, a typical substrate of P-gp, was measured over 4 hours in the absence and presence of green tea or EGCG in Caco-2 cell monolayers. OCT1-, OCT2-, MATE1- and MATE2-K-mediated metformin uptake was significantly reduced in the presence of green tea and EGCG (P < 0.05). BSP net uptake by OATP1B1 and OATP1B3 was inhibited by green tea [IC50 2.6% (v/v) and 0.39% (v/v), respectively]. Green tea also inhibited OATP1B1- and OATP1B3-mediated atorvastatin net uptake with IC50 values of 1.9% (v/v) and 1.0% (v/v), respectively. Basolateral to apical transport of digoxin was significantly decreased in the presence of green tea and EGCG. These findings indicate that green tea and EGCG inhibit multiple drug transporters in vitro. Further studies are necessary to investigate the effects of green tea on prototoypical substrates of these transporters in humans, in particular on substrates of hepatic uptake transporters (e.g. statins) as well as on P-glycoprotein substrates.
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Affiliation(s)
- Jana Knop
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Shingen Misaka
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Department of Pharmacology, School of Medicine, Fukushima Medical University, Fukushima, Japan
| | - Katrin Singer
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Eva Hoier
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Fabian Müller
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Hartmut Glaeser
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Jörg König
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Martin F. Fromm
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- * E-mail:
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Hou Q, Li S, Li L, Li Y, Sun X, Tian H. Association Between SLCO1B1 Gene T521C Polymorphism and Statin-Related Myopathy Risk: A Meta-Analysis of Case-Control Studies. Medicine (Baltimore) 2015; 94:e1268. [PMID: 26376374 PMCID: PMC4635788 DOI: 10.1097/md.0000000000001268] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Revised: 06/22/2015] [Accepted: 07/09/2015] [Indexed: 02/05/2023] Open
Abstract
Statin-related myopathy is an important adverse effect of statin which is classically unpredictable. The evidence of association between solute carrier organic anion transporter 1B1 (SLCO1B1) gene T521C polymorphism and statin-related myopathy risk remained controversial. This study aimed to investigate this genetic association. Databases of PubMed, EMBASE, Chinese Biomedical Literature Database (CBM), China National Knowledge Infrastructure (CNKI), Chinese Scientific Journals Database, and Wanfang Data were searched till June 17, 2015. Case-control studies investigating the association between SLCO1B1 gene T521C polymorphism and statin-related myopathy risk were included. The Newcastle-Ottawa Scale (NOS) was used for assessing the quality of included studies. Data were pooled by odds ratios (ORs) and their 95% confidence intervals (CIs). Nine studies with 1360 cases and 3082 controls were included. Cases of statin-related myopathy were found to be significantly associated with the variant C allele (TC + CC vs TT: OR = 2.09, 95% CI = 1.27-3.43, P = 0.003; C vs T: OR = 2.10, 95% CI = 1.43-3.09, P < 0.001), especially when statin-related myopathy was defined as an elevation of creatine kinase (CK) >10 times the upper limit of normal (ULN) or rhabdomyolysis (TC + CC vs TT: OR = 3.83, 95% CI = 1.41-10.39, P = 0.008; C vs T: OR = 2.94, 95% CI = 1.47-5.89, P = 0.002). When stratified by statin type, the association was significant in individuals receiving simvastatin (TC + CC vs TT: OR = 3.09, 95% CI = 1.64-5.85, P = 0.001; C vs T: OR = 3.00, 95% CI = 1.38-6.49, P = 0.005), but not in those receiving atorvastatin (TC + CC vs TT: OR = 1.31, 95% CI = 0.74-2.30, P = 0.35; C vs T: OR = 1.33, 95% CI = 0.57-3.12, P = 0.52). The available evidence suggests that SLCO1B1 gene T521C polymorphism is associated with an increased risk of statin-related myopathy, especially in individuals receiving simvastatin. Thus, a genetic test before initiation of statins may be meaningful for personalizing the treatment.
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Affiliation(s)
- Qingtao Hou
- From the Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu, China (QH, SL, HT); Chinese Evidence-Based Medicine Center, West China Hospital, Sichuan University, Chengdu, China (LL, XS); and Department of Endocrinology and Metabolism, The Third People's Hospital of Chengdu, Chengdu, China (YL)
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Khurana V, Minocha M, Pal D, Mitra AK. Inhibition of OATP-1B1 and OATP-1B3 by tyrosine kinase inhibitors. ACTA ACUST UNITED AC 2015; 29:249-59. [PMID: 24807167 DOI: 10.1515/dmdi-2014-0014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Accepted: 04/01/2014] [Indexed: 11/15/2022]
Abstract
BACKGROUND The potential of tyrosine kinase inhibitors (TKIs) interacting with other therapeutics through hepatic uptake transporter inhibition has not been fully delineated in drug-drug interactions (DDIs). This study was designed to estimate the half-maximal inhibitory concentration (IC50) values of five small-molecule TKIs (pazopanib, nilotinib, vandetanib, canertinib and erlotinib) interacting with organic anion-transporting polypeptides (OATPs): OATP-1B1 and -1B3. METHODS The IC50 values of TKIs and rifampicin (positive control) were determined by concentration-dependent inhibition of TKIs on cellular accumulation of radiolabeled probe substrates [3H]estrone sulfate and [3H]cholecystokinin octapeptide. Chinese hamster ovary cells transfected with humanized OATP-1B1 and OATP-1B3 transporter proteins, respectively, were utilized to carry out these studies. RESULTS Pazopanib and nilotinib show inhibitory activity on OATP-1B1 transporter protein. IC50 values for rifampicin, pazopanib and nilotinib were 10.46±1.15, 3.89±1.21 and 2.78±1.13 μM, respectively, for OATP-1B1 transporter. Vandetanib, canertinib and erlotinib did not exhibit any inhibitory potency toward OATP-1B1 transporter protein. Only vandetanib expressed inhibitory potential toward OATP-1B3 transporter protein out of the five selected TKIs. IC50 values for rifampicin and vandetanib for OATP-1B3 transporter inhibition were 3.67±1.20 and 18.13±1.21 μM, respectively. No significant inhibition in the presence of increasing concentrations of pazopanib, nilotinib, canertinib and erlotinib were observed for OATP-1B3 transporter. CONCLUSIONS Because selected TKIs are inhibitors of OATP-1B1 and -1B3 expressed in hepatic tissue, these compounds can be regarded as molecular targets for transporter-mediated DDIs. These findings provide the basis for further preclinical and clinical studies investigating the transporter-based DDI potential of TKIs.
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Yang H, Wang Q, Zheng L, Lin M, Zheng XB, Lin F, Yang LY. Multiple Genetic Modifiers of Bilirubin Metabolism Involvement in Significant Neonatal Hyperbilirubinemia in Patients of Chinese Descent. PLoS One 2015; 10:e0132034. [PMID: 26146841 PMCID: PMC4493094 DOI: 10.1371/journal.pone.0132034] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Accepted: 06/09/2015] [Indexed: 01/16/2023] Open
Abstract
The potential for genetic variation to modulate neonatal hyperbilirubinemia risk is increasingly being recognized. A case-control study was designed to assess comprehensive contributions of the multiple genetic modifiers of bilirubin metabolism on significant neonatal hyperbilirubinemia in Chinese descendents. Eleven common mutations and polymorphisms across five bilirubin metabolism genes, namely those encoding UGT1A1, HMOX1, BLVRA, SLCO1B1 and SLCO1B3, were determined using the high resolution melt (HRM) assay or PCR-capillary electrophoresis analysis. A total of 129 hyperbilirubinemic infants and 108 control subjects were evaluated. Breastfeeding and the presence of the minor A allele of rs4148323 (UGTA*6) were correlated with an increased risk of hyperbilirubinemia (OR=2.17, P=0.02 for breastfeeding; OR=9.776, P=0.000 for UGTA*6 homozygote; OR=3.151, P=0.000 for UGTA*6 heterozygote); whereas, increasing gestational age and the presence of –TA7 repeat variant of UGT1A1 decreased the risk (OR=0.721, P=0.003 for gestational age; OR=0.313, P=0.002 for heterozygote TA6/TA7). In addition, the SLCO1B1 and SLCO1B3 polymorphisms also contributed to an increased risk of hyperbilirubinemia. This detailed analysis revealed the impact of multiple genetic modifiers on neonatal hyperbilirubinemia. This may support the use of genetic tests for clinical risk assessment. Furthermore, the established HRM assay can serve as an effective method for large-scale investigation.
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Affiliation(s)
- Hui Yang
- Laboratory Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, P. R. China
- Central Laboratory, Chaozhou Central Hospital Affiliated to Southern Medical University, Chaozhou, Guangdong Province, P. R. China
| | - Qian Wang
- Laboratory Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, P. R. China
- * E-mail: (QW); (LY)
| | - Lei Zheng
- Laboratory Medical Center, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, P. R. China
| | - Min Lin
- Central Laboratory, Chaozhou Central Hospital Affiliated to Southern Medical University, Chaozhou, Guangdong Province, P. R. China
| | - Xiang-bin Zheng
- Central Laboratory, Chaozhou Central Hospital Affiliated to Southern Medical University, Chaozhou, Guangdong Province, P. R. China
| | - Fen Lin
- Central Laboratory, Chaozhou Central Hospital Affiliated to Southern Medical University, Chaozhou, Guangdong Province, P. R. China
| | - Li-Ye Yang
- Central Laboratory, Chaozhou Central Hospital Affiliated to Southern Medical University, Chaozhou, Guangdong Province, P. R. China
- * E-mail: (QW); (LY)
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Daka A, Dimovski A, Kapedanovska A, Vavlukis M, Eftimov A, Labachevski N, Jakjovski K, Geshkovska MN, Nebija D, Mladenovska K. Effects of single nucleotide polymorphisms and haplotypes of the SLCO1B1 gene on the pharmacokinetic profile of atorvastatin in healthy Macedonian volunteers. Pharmazie 2015; 70:480-488. [PMID: 26373210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OATP1B1 is an influx transporter known to mediate the uptake of various endogenous compounds and xenobiotics. Several sequence variations have been discovered in the SLCO1B1 gene encoding OATP1B1. The aim of this study was to investigate the effects of SLCO1B1 polymorphisms on the pharmacokinetics of atorvastatin in healthy volunteers of Macedonian origin. Twenty three participants, genotyped for SLCO1B1 c.388A > G, c.521T > C, c.571T > C, c.597C > T, c.1086C > T, c.1463G > C and c.*439T > G polymorphisms using TaqMan allelic discrimination assay, ingested a single 80 mg dose of atorvastatin. The plasma concentrations of atorvastatin were measured for 48 h using Tandem Liquid Chromatography-Mass Spectrometry, LC-MS-MS, and the peak plasma concentration (C(max)), time to peak plasma concentration (T(max)), elimination half-life (t1/2), constant rate of elimination (k(el)), mean residence time (MRT, expo), volume of distribution (Vd/kg), clearance (CL/kg), area under curve AUC(0.48h) and AUC(0-∞), were determined. Our data confirmed that the SLCO1B1 gene is highly polymorphic, with a frequency of the c.521T > C single-nucleotide polymorphism (SNP) being the lowest (app. 15%) and of all other SNPs alleles above 40%. Exceptions were c.1463G > C and c.1086C > T SNPs for which variant alleles were not identified. The strongest correlation was observed between the c.521T > C and c.571T > C SNPs pair. The haplotype analysis revealed 10 different haplotypes, with *1J/*1K/*1L being the dominant, with a frequency of app. 40%. The haplotype *15/*16/*17, containing both variant alleles of the functionally most distinguished SNPs, c.388A > G and c.521T > C, occurred with a frequency of 13%. However, *15/*16/*17 homozygotes were not identified in the study group. In this study, no significant differences in the k(el), t1/2, C(max), T(max), AUC(0-48h), AUC(0-∞), MRT expo, Vd and CL between the carriers of different c.388A > G, c.597C > T and c.*439T > G genotypes were observed. Subject with a variant allele C in the c.521T > C SNP, c.521CC genotype, had markedly higher values for C(max) and AUC(0.48h), 140% and 67%, respectively, in comparison with the carriers of the c.521TT genotype. Also, the carriers of the variant allele C at c.571T > C SNP, c.571 CC genotype, had 55% and 43% lower mean C(max) and AUC(0-48h) in comparison with the carrier of c.571TT. These differences lacked statistical significance due to the size of the sample. In addition, no significant differences in the pharmacokinetic parameters of atorvastatin between the *15/*16/*17 heterozygotes and *15/*16/*17 non-carriers were observed. In conclusion, this extensive analysis of the effect of SLCO1B1 polymorphisms on the pharmacokinetic profile of atorvastatin showed that c.521T > C and c.571T > C SNPs may affect the inter-individual response to atorvastatin. Additional studies, with a large sample size, are needed to confirm this finding.
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Chen Y, Shen Z. Gene polymorphisms in the folate metabolism and their association with MTX-related adverse events in the treatment of ALL. Tumour Biol 2015; 36:4913-21. [PMID: 26022160 DOI: 10.1007/s13277-015-3602-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Accepted: 05/20/2015] [Indexed: 01/22/2023] Open
Abstract
The antifolate drug methotrexate (MTX) is widely used in the treatment of various neoplastic diseases, including acute lymphoblastic leukemia (ALL). MTX significantly increases cure rates and improves patients' prognosis. Despite that it achieved remarkable clinical success, a large number of patients still suffer from treatment toxicities or side effects. Even to this date, chemotherapeutic regiments have not been personalized because of interindividual differences that affect MTX response, especially polymorphisms in key genes. The pharmacological pathway of MTX in cells is useful to identify gene polymorphisms that influence the process of treatment. The aim of this review was to discuss the gene polymorphisms of drug-metabolizing enzymes in the MTX pathway and their toxicities on ALL treatment.
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Affiliation(s)
- Yang Chen
- Centre of Clinical Laboratory, Anhui Provincial Hospital Affiliated of Anhui Medical University, Hefei, 230001, China
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Sticova E, Lodererova A, van de Steeg E, Frankova S, Kollar M, Lanska V, Kotalova R, Dedic T, Schinkel AH, Jirsa M. Down-regulation of OATP1B proteins correlates with hyperbilirubinemia in advanced cholestasis. Int J Clin Exp Pathol 2015; 8:5252-5262. [PMID: 26191226 PMCID: PMC4503098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Accepted: 04/13/2015] [Indexed: 06/04/2023]
Abstract
AIM Organic anion-transporting polypeptides OATP1B1 and OATP1B3 are sinusoidal membrane transporters mediating liver uptake of a wide range of substrates including conjugated and unconjugated bilirubin, xenobiotics and drugs. Absence of OATP1Bs in the liver causes Rotor syndrome. Our aim was to correlate OATP1B expression with hyperbilirubinemia in common liver diseases. METHODS Immunoreactivity of five antibodies against human OATP1Bs was tested on frozen and formalin-fixed paraffin-embedded liver tissue of mouse strains transgenic for SLCO1B1 or SLCO1B3 and on human specimens. The proportion of hepatocytes expressing OATP1Bs was then assessed immunohistologically in formalin-fixed paraffin-embedded liver samples obtained from patients with hepatocellular and primary biliary liver diseases. UGT1A1 promoter TATA-box and SLCO1B1 rs4149056 genotyping was performed to rule out individuals predisposed to hyperbilirubinemia. RESULTS The most specific detection of OATP1B3 was achieved with the H-52 (sc-98981) antibody. OATP1B1 was specifically recognized with the ESL (ab15441) anti-OATP1B1 antibody, but only in frozen sections. The MDQ (ab15442) anti-OATP1B1 antibody cross-reacted with both OATP1B proteins in liver tissue of the transgenic mouse strains. Expression of the OATP1B proteins was decreased in advanced liver diseases and inversely correlated with serum bilirubin levels. The reduction was more pronounced in advanced primary biliary diseases (1.9±1.1 vs. 2.7±0.6; P=0.009). CONCLUSIONS Down-regulation of OATP1B proteins may contribute to pathogenesis of jaundice accompanying advanced cholestatic liver diseases.
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Affiliation(s)
- Eva Sticova
- Department of Clinical and Transplant Pathology, Institute for Clinical and Experimental Medicine 14021 Prague 4, Czech Republic ; Third Faculty of Medicine, Charles University 10000 Prague 10, Czech Republic
| | - Alena Lodererova
- Department of Clinical and Transplant Pathology, Institute for Clinical and Experimental Medicine 14021 Prague 4, Czech Republic
| | - Evita van de Steeg
- The Netherlands Cancer Institute Amsterdam, The Netherlands ; TNO Zeist, The Netherlands
| | - Sona Frankova
- Department of Hepatogastroenterology, Institute for Clinical and Experimental Medicine 14021 Prague 4, Czech Republic
| | - Marek Kollar
- Department of Clinical and Transplant Pathology, Institute for Clinical and Experimental Medicine 14021 Prague 4, Czech Republic
| | - Vera Lanska
- Medical Statistics Unit, Institute for Clinical and Experimental Medicine 14021 Prague 4, Czech Republic
| | - Radana Kotalova
- 2nd Department of Pediatrics of The 2nd Medical School, Charles University Prague, Czech Republic
| | - Tomas Dedic
- 2nd Department of Pediatrics of The 2nd Medical School, Charles University Prague, Czech Republic
| | | | - Milan Jirsa
- Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine 14021 Prague 4, Czech Republic
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Khurana V, Minocha M, Pal D, Mitra AK. Role of OATP-1B1 and/or OATP-1B3 in hepatic disposition of tyrosine kinase inhibitors. ACTA ACUST UNITED AC 2015; 29:179-90. [PMID: 24643910 DOI: 10.1515/dmdi-2013-0062] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Accepted: 02/12/2014] [Indexed: 11/15/2022]
Abstract
BACKGROUND The metabolism of tyrosine kinase inhibitors (TKIs) is mainly mediated via hepatic route, but the mechanism responsible for their hepatocellular accumulation is still unknown. This study was designed to understand the contribution of organic anion transporting polypeptides (OATPs) in the hepatic uptake of selected TKIs - pazopanib, canertinib, erlotinib, vandetanib and nilotinib. METHODS Michaelis-Menten (MM) kinetic parameters for TKIs were determined by concentration-dependent cellular accumulation of selected TKIs using Chinese hamster ovary cells - wild type as well as transfected with humanized OATP-1B1 and OATP-1B3 transporter proteins. RESULTS The MM constant (Km) values of OATP-1B1 for nilotinib and vandetanib are 10.14±1.91 and 2.72±0.25 μM, respectively, and Vmax values of OATP-1B1 for nilotinib and vandetanib were 6.95±0.47 and 75.95±1.99 nmol/mg protein per minute, respectively. Likewise, Km values of OATP-1B3 for canertinib, nilotinib and vandetanib were 12.18±3.32, 7.84±1.43 and 4.37±0.79 μM, respectively, and Vmax values of OATP-1B3 for canertinib, nilotinib and vandetanib were 15.34±1.59, 6.75±0.42 and 194.64±10.58 nmol/mg protein per minute, respectively. Canertinib did not exhibit any substrate specificity toward OATP-1B1. Also, erlotinib and pazopanib did not exhibit any substrate specificity toward OATP-1B1 and -1B3. CONCLUSIONS Because selected TKIs are the substrates of OATP-1B1 and -1B3 expressed in hepatic tissue, these compounds can be regarded as molecular targets for transporter-mediated drug-drug interactions (DDIs). Any alteration in the function of these hepatic OATPs might account for the pharmacokinetic variability of TKIs.
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Takumi S, Ikema S, Hanyu T, Shima Y, Kurimoto T, Shiozaki K, Sugiyama Y, Park HD, Ando S, Furukawa T, Komatsu M. Naringin attenuates the cytotoxicity of hepatotoxin microcystin-LR by the curious mechanisms to OATP1B1- and OATP1B3-expressing cells. Environ Toxicol Pharmacol 2015; 39:974-981. [PMID: 25818985 DOI: 10.1016/j.etap.2015.02.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 02/24/2015] [Accepted: 02/27/2015] [Indexed: 06/04/2023]
Abstract
Microcystin-LR, which is an inhibitor of serine/threonine protein phosphatase (PP)1 and PP2A, induces liver injury by its selective uptake system into the hepatocyte. It is also thought that microcystin-LR induces reactive oxygen species (ROS). We tried to establish the chemical prevention of microcystin-LR poisoning. We investigated the effect of grapefruit flavanone glycoside naringin on cytotoxicity of microcystin-LR using human hepatocyte uptake transporter OATP1B3-expressing HEK293-OATP1B3 cells. We found cytotoxicity of microcystin-LR was attenuated by naringin in a dose dependent manner. The inhibition magnitude of total cellular serine/threonine protein phosphatase activity induced by microcystin-LR was suppressed by naringin. In addition, uptake of microcystin-LR into HEK293-OATP1B3 cells was inhibited by naringin. Furthermore, microcystin-LR induced phosphorylation of p53 was inhibited by naringin. Regardless of the difference in the exposure pattern of pre-processing and post-processing of naringin, the toxicity of microcystin-LR was comparable. These results suggested that naringin is promising remedy as well as preventive medicine for liver damage with microcystin-LR. In addition, involvement of ROS production after exposure to the sublethal concentrations of microcystin-LR in the onset of cytotoxicity was negligible. Therefore, inhibition of microcystin-LR uptake and the pathway other than ROS production would be involved in the effect of naringin on the attenuation of microcystin-LR toxicity.
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Affiliation(s)
- Shota Takumi
- Department of Public Health and Environmental Medicine, The Jikei University School of Medicine, Tokyo 105-8461, Japan
| | - Satoshi Ikema
- Division of Food and Chemical Biology, Faculty of Fisheries, Kagoshima University, Kagoshima 890-0056, Japan
| | - Tamami Hanyu
- Division of Food and Chemical Biology, Faculty of Fisheries, Kagoshima University, Kagoshima 890-0056, Japan; Department of Environmental Sciences, Faculty of Science, Shinshu University, Matsumoto 390-8621, Japan
| | - Yusuke Shima
- Division of Food and Chemical Biology, Faculty of Fisheries, Kagoshima University, Kagoshima 890-0056, Japan
| | - Takashi Kurimoto
- Division of Food and Chemical Biology, Faculty of Fisheries, Kagoshima University, Kagoshima 890-0056, Japan
| | - Kazuhiro Shiozaki
- Division of Food and Chemical Biology, Faculty of Fisheries, Kagoshima University, Kagoshima 890-0056, Japan
| | - Yasumasa Sugiyama
- Division of Food and Chemical Biology, Faculty of Fisheries, Kagoshima University, Kagoshima 890-0056, Japan
| | - Ho-Dong Park
- Department of Environmental Sciences, Faculty of Science, Shinshu University, Matsumoto 390-8621, Japan
| | - Seiichi Ando
- Department of Nutritional Sciences, Faculty of Health and Welfare Science, Nayoro City University, Nayoro, Hokkaido 096-8641, Japan
| | - Tatsuhiko Furukawa
- Department of Molecular Oncology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8544, Japan; Center for the Research of Advanced Diagnosis and Therapy of Cancer, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan
| | - Masaharu Komatsu
- Division of Food and Chemical Biology, Faculty of Fisheries, Kagoshima University, Kagoshima 890-0056, Japan.
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Guo CX, Deng S, Yin JY, Liu ZQ, Zhang W, Zhou HH. Schisandrin A and B induce organic anion transporting polypeptide 1B1 transporter activity. Pharmazie 2015; 70:29-32. [PMID: 25975095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Organic anion transporting polypeptide 1B1 (OATP1B1) is the most important transporter in the organic anion transporting polypeptide family. OATP1B1 plays an important role in the hepatic uptake of many endogenous compounds and xenobiotics, including many clinical drugs. At present, the combinational usage of Chinese traditional herbal medicines and conventional chemical pharmaceuticals may affect the activity of enzymes and transporters activity and cause absorption of their substrates and metabolic changes. In this study, we aimed to investigate the effect of schisandrin A, schisandrin B and tanshinone IIA, which were extracted from medicinal plants, on OATP1B1 activity. HepG2 cells are used as in vitro models for OATP1B1 activity studies. A combination of 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyl-tertazolium bromide (MTT) assays, real-time RT-PCR, and transporter activity analysis were employed. We found that schisandrin A and B increased OATP1B1 mRNA levels by 1.81-fold (p < 0.01) and 1.87-fold (p < 0.01) at concentration of 10 μM, respectively. Schisandrin A of 1 μM and 10 μM and schisandrin B of 10 μM significantly increased the uptake of [3H] estrone-3-sulfate (p < 0.05 or p < 0.01). Tanshinone IIA had no effect on the mRNA expression and transport activity of OATP1B1 at nontoxic concentrations. Our study suggests that schisandrin A and B induced OATP1B1 expression and increased its transporter activity in HepG2 cells.
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Lee E, Luo J, Su YC, Lewinger JP, Schumacher FR, Van Den Berg D, Wu AH, Bernstein L, Ursin G. Hormone metabolism pathway genes and mammographic density change after quitting estrogen and progestin combined hormone therapy in the California Teachers Study. Breast Cancer Res 2014; 16:477. [PMID: 25499601 PMCID: PMC4318222 DOI: 10.1186/s13058-014-0477-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Accepted: 11/11/2014] [Indexed: 01/07/2023] Open
Abstract
INTRODUCTION Mammographic density (MD) is a strong biomarker of breast cancer risk. MD increases after women start estrogen plus progestin therapy (EPT) and decreases after women quit EPT. A large interindividual variation in EPT-associated MD change has been observed, but few studies have investigated genetic predictors of the EPT-associated MD change. Here, we evaluate the association between polymorphisms in hormone metabolism pathway genes and MD changes when women quit EPT. METHODS We collected mammograms before and after women quit EPT and genotyped 405 tagging single nucleotide polymorphisms (SNPs) in 30 hormone metabolism pathway genes in 284 non-Hispanic white participants of the California Teachers Study (CTS). Participants were ages 49 to 71 years at time of mammography taken after quitting EPT. We assessed percent MD using a computer-assisted method. MD change was calculated by subtracting MD of an 'off-EPT' mammogram from MD of an 'on-EPT' (that is baseline) mammogram. Linear regression analysis was used to investigate the SNP-MD change association, adjusting for the baseline 'on-EPT' MD, age and BMI at time of baseline mammogram, and time interval and BMI change between the two mammograms. An overall pathway and gene-level summary was obtained using the adaptive rank truncated product (ARTP) test. We calculated 'P values adjusted for correlated tests (P(ACT))' to account for multiple testing within a gene. RESULTS The strongest associations were observed for rs7489119 in SLCO1B1, and rs5933863 in ARSC. SLCO1B1 and ARSC are involved in excretion and activation of estrogen metabolites of EPT, respectively. MD change after quitting was 4.2% smaller per minor allele of rs7489119 (P = 0.0008; P(ACT) = 0.018) and 1.9% larger per minor allele of rs5933863 (P = 0.013; P(ACT) = 0.025). These individual SNP associations did not reach statistical significance when we further used Bonferroni correction to consider the number of tested genes. The pathway level summary ARTP P value was not statistically significant. CONCLUSIONS Data from this longitudinal study of EPT quitters suggest that genetic variation in two hormone metabolism pathway genes, SLCO1B1 and ARSC, may be associated with change in MD after women stop using EPT. Larger longitudinal studies are needed to confirm our findings.
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Affiliation(s)
- Eunjung Lee
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California/Norris Comprehensive Cancer Center, 1441 Eastlake Avenue, Los Angeles, CA, 90089, USA.
| | - Jianning Luo
- Department of Population Sciences, Beckman Research Institute, City of Hope, 1500 East Duarte Road, Duarte, CA, 91010, USA.
| | - Yu-Chen Su
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California/Norris Comprehensive Cancer Center, 1441 Eastlake Avenue, Los Angeles, CA, 90089, USA.
| | - Juan Pablo Lewinger
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California/Norris Comprehensive Cancer Center, 1441 Eastlake Avenue, Los Angeles, CA, 90089, USA.
| | - Fredrick R Schumacher
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California/Norris Comprehensive Cancer Center, 1441 Eastlake Avenue, Los Angeles, CA, 90089, USA.
| | - David Van Den Berg
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California/Norris Comprehensive Cancer Center, 1441 Eastlake Avenue, Los Angeles, CA, 90089, USA.
| | - Anna H Wu
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California/Norris Comprehensive Cancer Center, 1441 Eastlake Avenue, Los Angeles, CA, 90089, USA.
| | - Leslie Bernstein
- Department of Population Sciences, Beckman Research Institute, City of Hope, 1500 East Duarte Road, Duarte, CA, 91010, USA.
| | - Giske Ursin
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California/Norris Comprehensive Cancer Center, 1441 Eastlake Avenue, Los Angeles, CA, 90089, USA.
- Department of Nutrition, University of Oslo, PB 1046 Blindern, 0317, Oslo, Norway.
- Cancer Registry of Norway, PB 5313 Majorstuen, 0304, Oslo, Norway.
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Abstract
PURPOSE OF REVIEW To examine the current evidence concerning the effects of genetic variation on statin-related low-density lipoprotein cholesterol reductions, clinical efficacy, and adverse events and the relevance for patient care. RECENT FINDINGS Recent years have seen the emergence of large-scale genetic experiments, including genome-wide association studies and candidate gene studies, exploring the impact of common genetic variation on patient response to statins. These studies have built on previous smaller scale evidence, providing improved statistical power and enhanced ability to explore the genome. Current evidence suggests that common genetic variants do not alter low-density lipoprotein cholesterol response by more than a few percent, or materially alter the effect of statin on vascular risk reduction, and therefore that patients benefit from statins independent of common genetic variation. However, knowledge of SLCO1B1 genotypes is believed to have clinical utility for predicting myopathy risk and ensuring that statins are prescribed as safely as possible. Furthermore, new hypothesis-generating studies, such as those associating GATM with myopathy risk, offer potential insights for the future. SUMMARY Common genetic variation does not appear to be an important determinant of statin response, with the exception of SLCO1B1 and risk of myopathy. Future studies will help to determine the impact of low-frequency and rare genetic variation on statin response.
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Affiliation(s)
- Jemma C Hopewell
- CTSU, Nuffield Department of Population Health, University of Oxford, Oxford, UK *Jemma C. Hopewell, Christina Reith and Jane Armitage contributed equally to the writing of this article
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Shiotani A, Murao T, Fujita Y, Fujimura Y, Sakakibara T, Nishio K, Haruma K. Single nucleotide polymorphism markers for low-dose aspirin-associated peptic ulcer and ulcer bleeding. J Gastroenterol Hepatol 2014; 29 Suppl 4:47-52. [PMID: 25521733 DOI: 10.1111/jgh.12770] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIM In our previous study, the SLCO1B1 521TT genotype and the SLCO1B1*1b haplotype were significantly associated with the risk of peptic ulcer in patients taking low-dose aspirin (LDA). The aim of the present study was to investigate pharmacogenomic profile of LDA-induced peptic ulcer and ulcer bleeding. METHODS Patients taking 100 mg of enteric-coated aspirin for cardiovascular diseases and with a peptic ulcer or ulcer bleeding and patients who also participated in endoscopic surveillance were studied. Genome-wide analysis of single nucleotide polymorphisms (SNPs) was performed using the Affymetrix DME Plus Premier Pack. SLCO1B1*1b haplotype and candidate genotypes of genes associated with ulcer bleeding or small bowel bleeding identified by genome-wide analysis were determined using TaqMan SNP Genotyping Assay kits, polymerase chain reaction-restriction fragment length polymorphism, and direct sequencing. RESULTS Of 593 patients enrolled, 111 patients had a peptic ulcer and 45 had ulcer bleeding. The frequencies of the SLCO1B1*1b haplotype and CHST2 2082 T allele were significantly greater in patients with peptic ulcer and ulcer bleeding compared to the controls. After adjustment for significant factors, the SLCO1B1*1b haplotype was associated with peptic ulcer (OR 2.20, 95% CI 1.24-3.89) and CHST2 2082 T allele with ulcer bleeding (2.57, 1.07-6.17). CONCLUSION The CHST2 2082 T allele as well as SLCO1B1*1b haplotype may identify patients at increased risk for aspirin-induced peptic ulcer or ulcer bleeding.
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Affiliation(s)
- Akiko Shiotani
- Division of Gastroenterology, Department of Internal Medicine, Kawasaki Medical School, Matsushima Kurashiki, Okayama Prefecture, Japan
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Fu J, Tjandra M, Becker C, Bednarczyk D, Capparelli M, Elling R, Hanna I, Fujimoto R, Furegati M, Karur S, Kasprzyk T, Knapp M, Leung K, Li X, Lu P, Mergo W, Miault C, Ng S, Parker D, Peng Y, Roggo S, Rivkin A, Simmons RL, Wang M, Wiedmann B, Weiss AH, Xiao L, Xie L, Xu W, Yifru A, Yang S, Zhou B, Sweeney ZK. Potent nonimmunosuppressive cyclophilin inhibitors with improved pharmaceutical properties and decreased transporter inhibition. J Med Chem 2014; 57:8503-16. [PMID: 25310383 DOI: 10.1021/jm500862r] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Nonimmunosuppressive cyclophilin inhibitors have demonstrated efficacy for the treatment of hepatitis C infection (HCV). However, alisporivir, cyclosporin A, and most other cyclosporins are potent inhibitors of OATP1B1, MRP2, MDR1, and other important drug transporters. Reduction of the side chain hydrophobicity of the P4 residue preserves cyclophilin binding and antiviral potency while decreasing transporter inhibition. Representative inhibitor 33 (NIM258) is a less potent transporter inhibitor relative to previously described cyclosporins, retains anti-HCV activity in cell culture, and has an acceptable pharmacokinetic profile in rats and dogs. An X-ray structure of 33 bound to rat cyclophilin D is reported.
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Affiliation(s)
- Jiping Fu
- Novartis Institutes for Biomedical Research , 4560 Horton Street, Emeryville, California 94608, United States
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Zhang H, He X, Li J, Wang Y, Wang C, Chen Y, Niu C, Gao P. [SLCO1B1c. 521T>C gene polymorphisms are associated with high-dose methotrexate pharmacokinetics and clinical outcome of pediatric acute lymphoblastic leukemia]. Zhonghua Er Ke Za Zhi 2014; 52:770-776. [PMID: 25537545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To provide guidance for the high-dose methotrexate (HD-MTX) treatment of pediatric acute lymphoblastic leukemia (ALL), and to understand the impact of SLCO1B1c.521T>C (rs4149056) variant on methotrexate (MTX) pharmacokinetics and clinical outcome in children with ALL. METHOD Eighty-two children with ALL in Division of Hematology of Wuhan Children's Hospital from January 2008 to February 2013 were enrolled. All patients were genotyped for rs4149056 single nucleotide polymorphism (SNP) into wild-type group (TT genotype) and variant group (TC/CC genotype). According to the ALL-BFM 2000 protocol, all patients received intravenous infusion of MTX every ten days at 3 to 5 g/m(2). Leucovorin rescue was performed after 36 hours of the MTX administration and its dose was adjusted according to the MTX plasma concentration at 48 hours. The concentrations of MTX and its metabolite at 24, 48 and 72 h were determined by high performance liquid chromatography with solid phase extraction. Population pharmacokinetic parameters were estimated by the NLME software. The pharmacokinetics, toxicity and leucovorin rescue was compared. The relapse rate within 5 years and event-free survival were followed up. RESULT Eighty-two pediatric patients were classified into two groups: variant group including 20 TC genotype carriers and one CC genotype carrier, wild-type group included 61 patients with TT genotype. Compared with wild-type group, plasma concentration of MTX at 48 and 72 h increased significantly [48 h: (1.00±1.41) vs.(0.34±0.17) µmol/L, t=2.131, P=0.046; 72 h: (0.31±0.26) vs.(0.08±0.04) µmol/L; t=3.995, P=0.001]. Area under the concentration time curve (AUC48-∝) of MTX significantly increased in variant group [(23.18±19.91) vs.(5.66±2.01) h·µmol/L] (t=4.025, P=0.001). Time above the MTX safety threshold (TC>0.1 µmol/L) increased significantly in variant group [(95.3±22.0) vs.(67.1±7.5) h, t=5.880, P<0.001]. Rescue dosage of leucovorin in variant group was higher than that in wild-type group [(312.7±287.8) vs.(140.6±27.5) mg/m2, t=2.614, P=0.017]. The children carrying rs4149056 C allele suffered from a higher frequency of serious adverse effect [gastrointestinal toxicity: 33% (7/21) vs. 5% (3/61);hepatic toxicity: 24% (5/21) vs. 2% (1/61)]. The difference was statistically significant (χ2=9.275, 8.289, all P<0.05). Hospital stay of variant group was significantly longer than that of wild-type [(4.95±1.43) vs. (4.05±0.22) d, t=2.881, P=0.009]. The relapse rate within 5 years of variant group and wild-type group were 9% (2/21) and 13% (8/61), respectively. There were no significant differences in the event-free survival between the two groups (χ2=0.001, P=0.971). CONCLUSION The SLCO1B1 c.521T>C variant was an important determinant of MTX pharmacokinetics. An appropriate leucovorin dose raise in variant group was beneficial to reducing the serious toxicity and did not affect the long-term clinical outcome.
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Affiliation(s)
- Huanian Zhang
- Department of Clinical Pharmacology, Wuhan Children's Hospital, Wuhan 430016, China
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Abstract
Statins form the pharmacologic cornerstone of the primary and secondary prevention of atherosclerotic cardiovascular disease. In addition to beneficial cardiovascular effects, statins seem to have multiple non-cardiovascular effects. Although early concerns about statin induced hepatotoxicity and cancer have subsided owing to reassuring evidence, two of the most common concerns that clinicians have are myopathy and diabetes. Randomized controlled trials suggest that statins are associated with a modest increase in the risk of myositis but not the risk of myalgia. Severe myopathy (rhabdomyolysis) is rare and often linked to a statin regimen that is no longer recommended (simvastatin 80 mg). Randomized controlled trials and meta-analyses suggest an increase in the risk of diabetes with statins, particularly with higher intensity regimens in people with two or more components of the metabolic syndrome. Other non-cardiovascular effects covered in this review are contrast induced nephropathy, cognition, cataracts, erectile dysfunction, and venous thromboembolism. Currently, systematic reviews and clinical practice guidelines indicate that the cardiovascular benefits of statins generally outweigh non-cardiovascular harms in patients above a certain threshold of cardiovascular risk. Literature is also accumulating on the potential non-cardiovascular benefits of statins, which could lead to novel applications of this class of drug in the future.
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Affiliation(s)
- Chintan S Desai
- Johns Hopkins Ciccarone Center for the Prevention of Heart Disease, Baltimore, MD 21287, USA
| | - Seth S Martin
- Johns Hopkins Ciccarone Center for the Prevention of Heart Disease, Baltimore, MD 21287, USA
| | - Roger S Blumenthal
- Johns Hopkins Ciccarone Center for the Prevention of Heart Disease, Baltimore, MD 21287, USA
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Nieuweboer AJM, Hu S, Gui C, Hagenbuch B, Ghobadi Moghaddam-Helmantel IM, Gibson AA, de Bruijn P, Mathijssen RHJ, Sparreboom A. Influence of drug formulation on OATP1B-mediated transport of paclitaxel. Cancer Res 2014; 74:3137-45. [PMID: 24755470 DOI: 10.1158/0008-5472.can-13-3634] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Taxane antineoplastic agents are extensively taken up into hepatocytes by OATP1B-type transporters before metabolism and excretion. Because the biodistributional properties imposed upon these agents by different solubilizers drive clinically important pharmacodynamic endpoints, we tested the hypothesis that the in vitro and in vivo interaction of taxanes with OATP1B transporters is affected by the choice of drug delivery system. Transport of paclitaxel, docetaxel, and cabazitaxel was studied in vitro using various cell lines transfected with OATP1B1, OATP1B3, or the rodent equivalent OATP1B2. Pharmacokinetic studies were done in wild-type and OATP1B2-knockout mice in the presence or absence of polysorbate 80 (PS80) or Kolliphor EL (formerly Cremophor EL; CrEL). Paclitaxel and docetaxel, but not cabazitaxel, were transported substrates of OATP1B1, OATP1B3, and OATP1B2, and these in vitro transport processes were strongly reduced in the presence of clinically relevant concentrations of PS80 and CrEL. When paclitaxel was administered without any solubilizers, deficiency of OATP1B2 in mice was associated with a significantly decreased systemic clearance because of a liver distribution defect (P=0.000484). However, this genotype dependence of paclitaxel clearance was masked in the presence of PS80 or CrEL because of significant inhibition of OATP1B2-mediated hepatocellular uptake of the drug (P<0.05). Our findings confirm the importance of OATP1B-type transporters in the hepatic elimination of taxanes and indicate that this process can be inhibited by PS80 and CrEL. These results suggest that the likelihood of drug-drug interactions mediated by these transporters is strongly dependent on the selected taxane solubilizer.
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Affiliation(s)
- Annemieke J M Nieuweboer
- Authors' Affiliations: Department of Medical Oncology, Erasmus Medical Center Cancer Institute, Rotterdam, the Netherlands; Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee; and Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, Missouri
| | - Shuiying Hu
- Authors' Affiliations: Department of Medical Oncology, Erasmus Medical Center Cancer Institute, Rotterdam, the Netherlands; Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee; and Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, Missouri
| | - Chunshan Gui
- Authors' Affiliations: Department of Medical Oncology, Erasmus Medical Center Cancer Institute, Rotterdam, the Netherlands; Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee; and Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, Missouri
| | - Bruno Hagenbuch
- Authors' Affiliations: Department of Medical Oncology, Erasmus Medical Center Cancer Institute, Rotterdam, the Netherlands; Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee; and Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, Missouri
| | - Inge M Ghobadi Moghaddam-Helmantel
- Authors' Affiliations: Department of Medical Oncology, Erasmus Medical Center Cancer Institute, Rotterdam, the Netherlands; Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee; and Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, Missouri
| | - Alice A Gibson
- Authors' Affiliations: Department of Medical Oncology, Erasmus Medical Center Cancer Institute, Rotterdam, the Netherlands; Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee; and Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, Missouri
| | - Peter de Bruijn
- Authors' Affiliations: Department of Medical Oncology, Erasmus Medical Center Cancer Institute, Rotterdam, the Netherlands; Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee; and Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, Missouri
| | - Ron H J Mathijssen
- Authors' Affiliations: Department of Medical Oncology, Erasmus Medical Center Cancer Institute, Rotterdam, the Netherlands; Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee; and Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, Missouri
| | - Alex Sparreboom
- Authors' Affiliations: Department of Medical Oncology, Erasmus Medical Center Cancer Institute, Rotterdam, the Netherlands; Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee; and Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, MissouriAuthors' Affiliations: Department of Medical Oncology, Erasmus Medical Center Cancer Institute, Rotterdam, the Netherlands; Department of Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee; and Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, Missouri
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Herfindal L, Krakstad C, Myhren L, Hagland H, Kopperud R, Teigen K, Schwede F, Kleppe R, Døskeland SO. Introduction of aromatic ring-containing substituents in cyclic nucleotides is associated with inhibition of toxin uptake by the hepatocyte transporters OATP 1B1 and 1B3. PLoS One 2014; 9:e94926. [PMID: 24740327 PMCID: PMC3989234 DOI: 10.1371/journal.pone.0094926] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 03/21/2014] [Indexed: 11/19/2022] Open
Abstract
Analogs of the cyclic nucleotides cAMP and cGMP have been extensively used to mimic or modulate cellular events mediated by protein kinase A (PKA), Exchange protein directly activated by cAMP (Epac), or protein kinase G (PKG). We report here that some of the most commonly used cyclic nucleotide analogs inhibit transmembrane transport mediated by the liver specific organic anion transporter peptides OATP1B1 and OATP1B3, unrelated to actions on Epac, PKA or PKG. Several cAMP analogs, particularly with 8-pCPT-substitution, inhibited nodularin (Nod) induced primary rat hepatocyte apoptosis. Inhibition was not mediated by PKA or Epac, since increased endogenous cAMP, and some strong PKA- or Epac-activating analogs failed to protect cells against Nod induced apoptosis. The cAMP analogs inhibiting Nod induced hepatocyte apoptosis also reduced accumulation of radiolabeled Nod or cholic acid in primary rat hepatocytes. They also inhibited Nod induced apoptosis in HEK293 cells with enforced expression of OATP1B1 or 1B3, responsible for Nod transport into cells. Similar results were found with adenosine analogs, disconnecting the inhibitory effect of certain cAMP analogs from PKA or Epac. The most potent inhibitors were 8-pCPT-6-Phe-cAMP and 8-pCPT-2′-O-Me-cAMP, whereas analogs like 6-MB-cAMP or 8-Br-cAMP did not inhibit Nod uptake. This suggests that the addition of aromatic ring-containing substituents like the chloro-phenyl-thio group to the purines of cyclic nucleotides increases their ability to inhibit the OATP-mediated transport. Taken together, our data show that aromatic ring substituents can add unwanted effects to cyclic nucleotides, and that such nucleotide analogs must be used with care, particularly when working with cells expressing OATP1B1/1B3, like hepatocytes, or intact animals where hepatic metabolism can be an issue, as well as certain cancer cells. On the other hand, cAMP analogs with substituents like bromo, monobutyryl were non-inhibitory, and could be considered an alternative when working with cells expressing OATP1 family members.
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MESH Headings
- Animals
- Apoptosis/drug effects
- Bacterial Toxins/metabolism
- Bacterial Toxins/pharmacokinetics
- Bacterial Toxins/pharmacology
- Biological Transport/drug effects
- Cells, Cultured
- Cyclic AMP/analogs & derivatives
- Cyclic AMP/metabolism
- Cyclic AMP/pharmacology
- Cyclic AMP-Dependent Protein Kinases/metabolism
- Cyclic GMP/analogs & derivatives
- Cyclic GMP/metabolism
- Cyclic GMP/pharmacology
- Cyclic GMP-Dependent Protein Kinases/metabolism
- Dose-Response Relationship, Drug
- Glycocholic Acid/metabolism
- Glycocholic Acid/pharmacokinetics
- Glycocholic Acid/pharmacology
- Guanine Nucleotide Exchange Factors/metabolism
- HEK293 Cells
- Hepatocytes/cytology
- Hepatocytes/drug effects
- Hepatocytes/metabolism
- Humans
- Liver-Specific Organic Anion Transporter 1
- Male
- Microscopy, Confocal
- Models, Molecular
- Nucleotides, Cyclic/chemistry
- Nucleotides, Cyclic/pharmacology
- Organic Anion Transporters/chemistry
- Organic Anion Transporters/genetics
- Organic Anion Transporters/metabolism
- Organic Anion Transporters, Sodium-Independent/chemistry
- Organic Anion Transporters, Sodium-Independent/genetics
- Organic Anion Transporters, Sodium-Independent/metabolism
- Peptides, Cyclic/metabolism
- Peptides, Cyclic/pharmacokinetics
- Peptides, Cyclic/pharmacology
- Protein Structure, Tertiary
- Rats, Wistar
- Solute Carrier Organic Anion Transporter Family Member 1B3
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Affiliation(s)
- Lars Herfindal
- Department of Biomedicine, University of Bergen, Bergen, Norway
- Translational Signaling Group, Haukeland University Hospital, Bergen, Norway
- * E-mail:
| | | | - Lene Myhren
- Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Hanne Hagland
- Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Reidun Kopperud
- Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Knut Teigen
- Department of Biomedicine, University of Bergen, Bergen, Norway
| | | | - Rune Kleppe
- Department of Biomedicine, University of Bergen, Bergen, Norway
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Gertz M, Tsamandouras N, Säll C, Houston JB, Galetin A. Reduced physiologically-based pharmacokinetic model of repaglinide: impact of OATP1B1 and CYP2C8 genotype and source of in vitro data on the prediction of drug-drug interaction risk. Pharm Res 2014; 31:2367-82. [PMID: 24623479 DOI: 10.1007/s11095-014-1333-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Accepted: 02/08/2014] [Indexed: 12/15/2022]
Abstract
PURPOSE To investigate the effect of OATP1B1 genotype as a covariate on repaglinide pharmacokinetics and drug-drug interaction (DDIs) risk using a reduced physiologically-based pharmacokinetic (PBPK) model. METHODS Twenty nine mean plasma concentration-time profiles for SLCO1B1 c.521T>C were used to estimate hepatic uptake clearance (CLuptake) in different genotype groups applying a population approach in NONMEM v.7.2. RESULTS Estimated repaglinide CLuptake corresponded to 217 and 113 μL/min/10(6) cells for SLCO1B1 c.521TT/TC and CC, respectively. A significant effect of OATP1B1 genotype was seen on CLuptake (48% reduction for CC relative to wild type). Sensitivity analysis highlighted the impact of CLmet and CLdiff uncertainty on the CLuptake optimization using plasma data. Propagation of this uncertainty had a marginal effect on the prediction of repaglinide OATP1B1-mediated DDI with cyclosporine; however, sensitivity of the predicted magnitude of repaglinide metabolic DDI was high. In addition, the reduced PBPK model was used to assess the effect of both CYP2C8*3 and SLCO1B1 c.521T>C on repaglinide exposure by simulations; power calculations were performed to guide prospective DDI and pharmacogenetic studies. CONCLUSIONS The application of reduced PBPK model for parameter optimization and limitations of this process associated with the use of plasma rather than tissue profiles are illustrated.
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Affiliation(s)
- Michael Gertz
- Centre for Applied Pharmacokinetic Research Manchester Pharmacy School, The University of Manchester, Oxford Road, M13 9PT, Manchester, UK
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Hoffman JM, Haidar CE, Wilkinson MR, Crews KR, Baker DK, Kornegay NM, Yang W, Pui CH, Reiss UM, Gaur AH, Howard SC, Evans WE, Broeckel U, Relling MV. PG4KDS: a model for the clinical implementation of pre-emptive pharmacogenetics. Am J Med Genet C Semin Med Genet 2014; 166C:45-55. [PMID: 24619595 DOI: 10.1002/ajmg.c.31391] [Citation(s) in RCA: 192] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Pharmacogenetics is frequently cited as an area for initial focus of the clinical implementation of genomics. Through the PG4KDS protocol, St. Jude Children's Research Hospital pre-emptively genotypes patients for 230 genes using the Affymetrix Drug Metabolizing Enzymes and Transporters (DMET) Plus array supplemented with a CYP2D6 copy number assay. The PG4KDS protocol provides a rational, stepwise process for implementing gene/drug pairs, organizing data, and obtaining consent from patients and families. Through August 2013, 1,559 patients have been enrolled, and four gene tests have been released into the electronic health record (EHR) for clinical implementation: TPMT, CYP2D6, SLCO1B1, and CYP2C19. These genes are coupled to 12 high-risk drugs. Of the 1,016 patients with genotype test results available, 78% of them had at least one high-risk (i.e., actionable) genotype result placed in their EHR. Each diplotype result released to the EHR is coupled with an interpretive consult that is created in a concise, standardized format. To support-gene based prescribing at the point of care, 55 interruptive clinical decision support (CDS) alerts were developed. Patients are informed of their genotyping result and its relevance to their medication use through a letter. Key elements necessary for our successful implementation have included strong institutional support, a knowledgeable clinical laboratory, a process to manage any incidental findings, a strategy to educate clinicians and patients, a process to return results, and extensive use of informatics, especially CDS. Our approach to pre-emptive clinical pharmacogenetics has proven feasible, clinically useful, and scalable.
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Niedermeyer THJ, Daily A, Swiatecka-Hagenbruch M, Moscow JA. Selectivity and potency of microcystin congeners against OATP1B1 and OATP1B3 expressing cancer cells. PLoS One 2014; 9:e91476. [PMID: 24614281 PMCID: PMC3948918 DOI: 10.1371/journal.pone.0091476] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 02/13/2014] [Indexed: 11/19/2022] Open
Abstract
Microcystins are potent phosphatase inhibitors and cellular toxins. They require active transport by OATP1B1 and OATP1B3 transporters for uptake into human cells, and the high expression of these transporters in the liver accounts for their selective hepatic toxicity. Several human tumors have been shown to have high levels of expression of OATP1B3 but not OATP1B1, the main transporter in liver cells. We hypothesized that microcystin variants could be isolated that are transported preferentially by OATP1B3 relative to OATP1B1 to advance as anticancer agents with clinically tolerable hepatic toxicity. Microcystin variants have been isolated and tested for cytotoxicity in cancer cells stably transfected with OATP1B1 and OATP1B3 transporters. Microcystin variants with cytotoxic OATP1B1/OATP1B3 IC50 ratios that ranged between 0.2 and 32 were found, representing a 150-fold range in transporter selectivity. As microcystin structure has a significant impact on transporter selectivity, it is potentially possible to develop analogs with even more pronounced OATP1B3 selectivity and thus enable their development as anticancer drugs.
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Affiliation(s)
- Timo H. J. Niedermeyer
- Cyano Biotech GmbH, Berlin, Germany
- Interfaculty Institute for Microbiology and Infection Medicine, University of Tübingen, Tübingen, Germany
- * E-mail:
| | - Abigail Daily
- Department of Pediatrics, University of Kentucky, Lexington, Kentucky, United States of America
| | | | - Jeffrey A. Moscow
- Department of Pediatrics, University of Kentucky, Lexington, Kentucky, United States of America
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Lepist EI, Gillies H, Smith W, Hao J, Hubert C, St. Claire RL, Brouwer KR, Ray AS. Evaluation of the endothelin receptor antagonists ambrisentan, bosentan, macitentan, and sitaxsentan as hepatobiliary transporter inhibitors and substrates in sandwich-cultured human hepatocytes. PLoS One 2014; 9:e87548. [PMID: 24498134 PMCID: PMC3907537 DOI: 10.1371/journal.pone.0087548] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 12/30/2013] [Indexed: 11/25/2022] Open
Abstract
Background Inhibition of the transporter-mediated hepatobiliary elimination of bile salts is a putative mechanism for liver toxicity observed with some endothelin receptor antagonists (ERAs). Methods Sandwich-cultured human hepatocytes were used to study the hepatobiliary distribution and accumulation of exogenous taurocholate, ERAs and endogenous bile acids. The molecular mechanisms for findings in hepatocytes or clinical observations were further explored using either vesicular assays (efflux transporters) or transfected cell-lines (uptake transporters). Inhibition constants (IC50) were measured for the human hepatobiliary transporters bile salt export pump (BSEP), sodium taurocholate cotransporting polypeptide (NTCP), multidrug resistance protein 2 (MRP2), P-glycoprotein (Pgp), breast cancer resistance protein (BCRP), organic anion-transporting polypeptide 1B1 (OATP1B1) and OATP1B3. Results The ERAs showed dose-dependent reductions in exogenous taurocholate cellular accumulation in human hepatocytes, with macitentan having the greatest effect. Consistent with their effects on bile acids, the ERAs inhibited bile transporters. IC50 values for OATP1B1 and OATP1B3 ranged from 2 µM for macitentan to 47 µM for ambrisentan. Macitentan and bosentan also inhibited NTCP with IC50 values of 10 and 36 µM, respectively. Similar to previously reported findings with sitaxsentan, BSEP inhibition was observed for bosentan and macitentan with IC50 values of 42 and 12 µM, respectively. In contrast, ambrisentan showed little or no inhibition of these transporters. Other transporters tested were weakly inhibited by the ERAs. Accumulation in hepatocytes was also a factor in the effects on bile transport. Macitentan demonstrated the greatest accumulation in human hepatocytes (∼100x) followed by sitaxsentan (∼40x), bosentan (∼20x) and ambrisentan (∼2x). Conclusions Significant differences in the inhibition of hepatic transporters were observed between the evaluated ERAs in vitro. Macitentan had the highest level of cellular accumulation and caused the greatest effects on bile acid distribution in human hepatocytes followed by sitaxsentan and bosentan. Ambrisentan showed a low potential to affect bile acids.
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Affiliation(s)
- Eve-Irene Lepist
- Gilead Sciences, Inc., Foster City, California, United States of America
| | - Hunter Gillies
- Gilead Sciences, Inc., Foster City, California, United States of America
| | - William Smith
- Qualyst Transporter Solutions, LLC, Durham, North Carolina, United States of America
| | - Jia Hao
- Gilead Sciences, Inc., Foster City, California, United States of America
| | - Cassandra Hubert
- Qualyst Transporter Solutions, LLC, Durham, North Carolina, United States of America
| | - Robert L. St. Claire
- Qualyst Transporter Solutions, LLC, Durham, North Carolina, United States of America
| | - Kenneth R. Brouwer
- Qualyst Transporter Solutions, LLC, Durham, North Carolina, United States of America
| | - Adrian S. Ray
- Gilead Sciences, Inc., Foster City, California, United States of America
- * E-mail:
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Haberer LJ, McSherry I, Cargill A, McCarthy L. Effects of vercirnon on the activity of CYP3A4, CYP2C19 and CYP2C8 enzymes and BCRP and OATP1B1 transporters using probe substrates. Eur J Clin Pharmacol 2014; 70:37-45. [PMID: 24100471 PMCID: PMC3889518 DOI: 10.1007/s00228-013-1592-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Accepted: 09/20/2013] [Indexed: 12/19/2022]
Abstract
PURPOSE Vercirnon is a CCR9 chemokine receptor antagonist being developed for the treatment of Crohn's disease. As a variety of concomitant medications are often required for the treatment of Crohn's disease, it is important to characterise the drug interaction profile of vercirnon. To confirm the results of previous in vitro inhibition studies, this study assessed the in vivo effect of vercirnon on the activity of cytochrome P450 enzymes (CYP3A4, CYP2C19 and CYP2C8) and drug transport proteins (BCRP and OATP1B1) using probe substrates. METHODS This was an open-label, single-sequence, repeat-dose study conducted in 24 healthy adult subjects. On days 1-4, subjects received probe substrates (midazolam, pioglitazone, omeprazole and rosuvastatin; in that order), followed by administration of vercirnon 500 mg twice daily (BID) on days 5-14. On days 11-14, in addition to vercirnon 500 mg BID, subjects also received probe substrates as on days 1-4. Blood samples were collected for pharmacokinetic analysis of probe substrates, vercirnon and two of its metabolites. RESULTS Geometric least-squares mean ratios (90 % confidence interval) of area under the concentration-time curve from time zero to infinity for probe administered with vercirnon (test) compared with probe alone (reference) for midazolam, pioglitazone, omeprazole and rosuvastatin were 0.92 (0.85, 0.99), 1.01 (0.95, 1.07), 0.99 (0.76,1.31) and 0.98 (0.88, 1.09), respectively. CONCLUSIONS Co-administration of probe substrates midazolam, pioglitazone, omeprazole, and rosuvastatin following repeat dosing of vercirnon 500 mg BID demonstrated vercirnon had no clinically significant effect on CYP3A4, CYP2C8, CYP2C19 enzyme activity or BCRP or OATP1B1 transporter activity.
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Affiliation(s)
- Lynda J Haberer
- Clinical Pharmacology Modelling & Simulation, GlaxoSmithKline, 5 Moore Drive, Research Triangle Park, NC, 27709, USA,
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Templeton I, Eichenbaum G, Sane R, Zhou J. Case study 5. Deconvoluting hyperbilirubinemia: differentiating between hepatotoxicity and reversible inhibition of UGT1A1, MRP2, or OATP1B1 in drug development. Methods Mol Biol 2014; 1113:471-483. [PMID: 24523126 DOI: 10.1007/978-1-62703-758-7_22] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
New molecular entities (NMEs) are evaluated using a rigorous set of in vitro and in vivo studies to assess their safety and suitability for testing in humans. Regulatory health authorities require that therapeutic and supratherapeutic doses be administered, by the intended route of administration, to two nonclinical species prior to human testing (ICH Expert Working Group. The international conference on harmonization of technical requirements for registration of pharmaceuticals for human use (ICH); Multidisciplinary guidelines; Nonclinical safety studies (M3). http://www.ich.org/fileadmin/Public_Web_Site/ICH_Products/Guidelines/Multidisciplinary/M3_R2/Step4/M3_R2__Guideline.pdf , 2009). The purpose of these studies is to identify potential target organ toxicity and to determine if the effects are reversible. Liver is a potential site for toxicity caused by orally administered NMEs due to high exposure during first pass after oral administration. A range of clinical chemistry analytes are routinely measured in both nonclinical and clinical studies to evaluate and monitor for hepatotoxicity. While bilirubin itself circulates within a wide range of concentrations in many animal species and humans, without causing adverse effects and possibly providing benefits (Sedlak and Snyder. Pediatrics 113(6):1776-1782, 2004), bilirubin is one of the few readily monitored circulating biomarkers that can provide insight into liver function. Therefore, any changes in plasma or urine bilirubin levels must be carefully evaluated. Changes in bilirubin may occur as a result of adaptive nontoxic changes or severe toxicity. Examples of adaptive nontoxic changes in liver function, which may elevate direct (conjugated) and/or indirect (unconjugated) bilirubin above baseline levels, include reversible inhibition of UGT1A1-mediated bilirubin metabolism and OATP1B1-, OATP1B3-, or MRP2-mediated transport (Keogh. Adv Pharmacol 63:1-42, 2012). Alternatively, hepatocellular necrosis, hypoalbuminuria, or cholestasis may also lead to elevation of bilirubin; in some cases, these effects may be irreversible (FDA/CDER. Guidance for industry drug-induced liver injury: premarketing clinical evaluation. http://www.fda.gov/downloads/Drugs/…/Guidances/UCM174090.pdf , 2012).This chapter aims to demonstrate application of enzyme kinetic principles in understanding the risk of bilirubin elevation through inhibition of multiple processes-involving both enzymes and transporters. In the sections that follow, we first provide a brief summary of bilirubin formation and disposition. Two case examples are then provided to illustrate the enzyme kinetic studies needed for risk assessment and for identifying the mechanisms of bilirubin elevation. Caveats of methods and data interpretation are discussed in these case studies. The data presented in this chapter is unpublished at the time of compilation of this book. It has been incorporated in this chapter to provide a sense of complexities in enzyme kinetics to the reader.
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Affiliation(s)
- Ian Templeton
- Drug Safety Sciences, Janssen Research and Development, Spring House, PA, USA
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