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Suárez-Santisteban MA, Santos-Díaz G, García-Bernalt V, Pérez-Pico AM, Mingorance E, Mayordomo R, Dorado P. Association between CYP4A11 and EPHX2 genetic polymorphisms and chronic kidney disease progression in hypertensive patients. Nefrologia 2024:S2013-2514(24)00037-3. [PMID: 38448299 DOI: 10.1016/j.nefroe.2024.01.020] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 08/06/2023] [Indexed: 03/08/2024] Open
Abstract
BACKGROUND There are evidence indicating that some metabolites of arachidonic acid produced by cytochromes P450 (CYP) and epoxide hydroxylase (EPHX2), such as hydroxyeicosatetraenoic acids (HETEs), epoxyeicosatrienoic acids (EETs) or dihydroxyeicosatrienoic acids (DHETEs), play an important role in blood pressure regulation and they could contribute to the development of hypertension (HT) and kidney damage. Therefore, the main aim of the study was to evaluate whether the genetic polymorphisms of CYP2C8, CYP2C9, CYP2J2, CYP4F2, CYP4F11 and EPHX2, responsible for the formation of HETEs, EETs and DHETEs, are related to the progression of impaired renal function in a group of patients with hypertension. METHODS 151HT patients from a hospital nephrology service were included in the study. Additionally, a group of 87 normotensive subjects were involved in the study as control group. For HT patients, a general biochemistry analysis, estimated glomerular filtration rate and genotyping for different CYPs and EPHX2 variant alleles was performed. RESULTS CYP4A11 rs3890011, rs9332982 and EPHX2 rs41507953 polymorphisms, according to the dominant model, presented a high risk of impaired kidney function, with odds ratios (OR) of 2.07 (1.00-4.32; P=0.049) 3.02 (1.11-8.23; P=0.030) and 3.59 (1.37-9.41; P=0.009), respectively, and the EPHX2 rs1042032 polymorphism a greater risk according to the recessive model (OR=6.23; 95% CI=1.50-25.95; P=0.007). However, no significant differences in allele frequencies between HT patients and in normotensive subjects for any of the SNP analysed. In addition, the patients with diagnosis of dyslipidemia (n=90) presented higher frequencies of EPHX2 K55R (rs41507953) and *35A>G (rs1042032) variants than patients without dyslipidemia, 4% vs. 14% (P=0.005) and 16 vs. 27% (P=0.02), respectively. CONCLUSIONS In this study has been found higher odds of impaired renal function progression associated with rs3890011 and rs9332982 (CYP4A11) and rs41507953 and rs1042032 (EPHX2) polymorphisms, which may serve as biomarkers for improve clinical interventions aimed at avoiding or delaying, in chronic kidney disease patients, progress to end-stage kidney disease needing dialysis or kidney transplant.
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Affiliation(s)
- Miguel A Suárez-Santisteban
- Biosanitary University Research Institute (INUBE), University of Extremadura, Badajoz, Spain; Service of Nephrology, Virgen del Puerto Hospital, Plasencia, Spain
| | - Gracia Santos-Díaz
- Biosanitary University Research Institute (INUBE), University of Extremadura, Badajoz, Spain
| | | | - Ana M Pérez-Pico
- Department of Nursing, University of Extremadura, Plasencia, Spain
| | | | - Raquel Mayordomo
- Department of Anatomy, Cellular Biology and Zoology, University of Extremadura, Plasencia, Spain
| | - Pedro Dorado
- Biosanitary University Research Institute (INUBE), University of Extremadura, Badajoz, Spain; Department of Medical and Surgical Therapeutics, University of Extremadura, Badajoz, Spain.
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Kamali S, Iranbakhsh A, Ebadi M, Oraghi Ardebili Z, Haghighat S. Methyl jasmonate conferred Arsenic tolerance in Thymus kotschyanus by DNA hypomethylation, stimulating terpenoid metabolism, and upregulating two cytochrome P450 monooxygenases. J Hazard Mater 2024; 465:133163. [PMID: 38064945 DOI: 10.1016/j.jhazmat.2023.133163] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 02/08/2024]
Abstract
Arsenic (As) is a highly cytotoxic element impairing normal cellular functions, and its bioremediation has become one of the environmental concerns. This study explored the molecular and physiological responses of thyme (Thymus kotschyanus) seedlings to incorporating As (0 and 10 mgl-1) and methyl jasmonate (MJ; 0 and 10 µM) into the culture medium. The MJ treatment reinforced root system and mitigated the As cytotoxicity risk. MJ contributed to hypomethylation, a potential adaptation mechanism for conferring the As tolerance. Two cytochrome P450 monooxygenases, including CYP71D178 and CYP71D180 genes, were upregulated in response to As and MJ. The MJ treatment contributed to up-regulation in the γ-terpinene synthase (TPS) gene, a marker gene in the terpenoid metabolism. The As presence reduced photosynthetic pigments (chlorophylls and carotenoids), while the MJ utilization alleviated the As toxicity. The MJ supplementation increased proline accumulation and soluble phenols. The application of MJ declined the toxicity sign of As on the concentration of proteins. The activities of peroxidase, catalase, and phenylalanine ammonia-lyase (PAL) enzymes displayed an upward trend in response to As and MJ treatments. Taken collective, MJ can confer the As tolerance by triggering DNA hypomethylation, regulating CYPs, and stimulating primary and secondary metabolism, especially terpenoid.
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Affiliation(s)
- Soheila Kamali
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Alireza Iranbakhsh
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran.
| | - Mostafa Ebadi
- Department of Biology, Damghan Branch, Islamic Azad University, Damghan, Iran
| | | | - Setareh Haghighat
- Department of Microbiology, Faculty of advanced sciences and technology, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
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Maksymchuk O, Gerashchenko G, Rosohatska I, Kononenko O, Tymoshenko A, Stakhovsky E, Kashuba V. Cytochrome P450 genes expression in human prostate cancer. Mol Genet Metab Rep 2024; 38:101049. [PMID: 38469085 PMCID: PMC10926225 DOI: 10.1016/j.ymgmr.2024.101049] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 01/04/2024] [Accepted: 01/04/2024] [Indexed: 03/13/2024] Open
Abstract
CYP-dependent metabolites play a critical role in regulating the cell cycle, as well as the proliferative, invasive, and migratory activity of cancer cells. We conducted a study to analyze the relative gene expression of various CYPs (CYP7B1, CYP27A1, CYP39A1, CYP51, CYP1B1, CYP3A5, CYP4F8, CYP5A1, CYP4F2, CYP2J2, CYP2E1, CYP2R1, CYP27B1, CYP24A1) in 41 pairs of prostate samples (tumor and conventional normal tissues) using qPCR. Our analysis determined significant individual variability in the expression levels of all studied CYPs, both in the tumor and in conventionally normal groups. However, when we performed a paired test between the tumor and normal groups, we found no significant difference in the expression of the studied genes. We did observe a tendency to increase the level of CYP1B1 expression in the tumor group. We also did not find any significant difference between the levels of the studied CYPs in the tumor and conventional normal groups at different stages of prostate cancer and pathomorphological indicators. Correlation analysis revealed the presence of a positive relationship between the expressions of some cholesterol-metabolizing CYP genes, as well as between genes responsible for vitamin D biosynthesis and cholesterol biosynthesis. We observed significant correlative relationships between the expression of CYPs and some prostate cancer-related genes (CDH2, MMP9, SCHLAP1, GCR, CYP17A1, ACTA2, CXCL14, FAP, CCL17, MSMB, IRF1, VDR). Therefore, the expression of CYPs is not directly associated with prostate cancer but is largely determined by genetic, epigenetic factors, as well as endogenous substrates and xenobiotics. The significant correlative relationship between CYPs and genes associated with cancer may indicate common regulatory pathways that may have a synergistic effect on the tumor, ensuring the survival of cancer cells.
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Affiliation(s)
- Oksana Maksymchuk
- Institute of Molecular Biology and Genetics, Department of Molecular Oncogenetics, National Academy of Sciences of Ukraine, 150 Zabolotnogo Street, Kyiv 03143, Ukraine
| | - Ganna Gerashchenko
- Institute of Molecular Biology and Genetics, Department of Molecular Oncogenetics, National Academy of Sciences of Ukraine, 150 Zabolotnogo Street, Kyiv 03143, Ukraine
| | - Inna Rosohatska
- Institute of Molecular Biology and Genetics, Department of Molecular Oncogenetics, National Academy of Sciences of Ukraine, 150 Zabolotnogo Street, Kyiv 03143, Ukraine
| | - Oleksiy Kononenko
- State Institution "National Cancer Institute", Department of Plastic and Reconstructive Oncourology, Kyiv 03022, Ukraine
| | - Andriy Tymoshenko
- State Institution "National Cancer Institute", Department of Plastic and Reconstructive Oncourology, Kyiv 03022, Ukraine
| | - Eduard Stakhovsky
- State Institution "National Cancer Institute", Department of Plastic and Reconstructive Oncourology, Kyiv 03022, Ukraine
| | - Volodymyr Kashuba
- Institute of Molecular Biology and Genetics, Department of Molecular Oncogenetics, National Academy of Sciences of Ukraine, 150 Zabolotnogo Street, Kyiv 03143, Ukraine
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Mlambo G, Padayachee T, Nelson DR, Syed K. Genome-Wide Analysis of the Cytochrome P450 Monooxygenases in the Lichenized Fungi of the Class Lecanoromycetes. Microorganisms 2023; 11:2590. [PMID: 37894248 PMCID: PMC10608907 DOI: 10.3390/microorganisms11102590] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 10/01/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023] Open
Abstract
Lichens are unique organisms that exhibit a permanent symbiosis between fungi and algae or fungi and photosynthetic bacteria. Lichens have been found to produce biotechnologically valuable secondary metabolites. A handful of studies showed that tailoring enzymes such as cytochrome P450 monooxygenases (CYPs/P450s) play a key role in synthesizing these metabolites. Despite the critical role of P450s in the biosynthesis of secondary metabolites, the systematic analysis of P450s in lichens has yet to be reported. This study is aimed to address this research gap. A genome-wide analysis of P450s in five lichens from the fungal class Lecanoromycetes revealed the presence of 434 P450s that are grouped into 178 P450 families and 345 P450 subfamilies. The study indicated that none of the P450 families bloomed, and 15 P450 families were conserved in all five Lecanoromycetes. Lecanoromycetes have more P450s and higher P450 family diversity compared to Pezizomycetes. A total of 73 P450s were found to be part of secondary metabolite gene clusters, indicating their potential involvement in the biosynthesis of secondary metabolites. Annotation of P450s revealed that CYP682BG1 and CYP682BG2 from Cladonia grayi and Pseudevernia furfuracea (physodic acid chemotype) are involved in the synthesis of grayanic acid and physodic acid, CYP65FQ2 from Stereocaulon alpinum is involved in the synthesis of atranorin, and CYP6309A2 from Cladonia uncialis is involved in the synthesis of usnic acid. This study serves as a reference for future annotation of P450s in lichens.
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Affiliation(s)
- Gugulethu Mlambo
- Department of Biochemistry and Microbiology, Faculty of Science, Agriculture and Engineering, University of Zululand, Vulindlela, KwaDlangezwa 3886, South Africa; (G.M.); (T.P.)
| | - Tiara Padayachee
- Department of Biochemistry and Microbiology, Faculty of Science, Agriculture and Engineering, University of Zululand, Vulindlela, KwaDlangezwa 3886, South Africa; (G.M.); (T.P.)
| | - David R. Nelson
- Department of Microbiology, Immunology and Biochemistry, University of Tennessee Health Science Center, Memphis, TN 38163, USA
| | - Khajamohiddin Syed
- Department of Biochemistry and Microbiology, Faculty of Science, Agriculture and Engineering, University of Zululand, Vulindlela, KwaDlangezwa 3886, South Africa; (G.M.); (T.P.)
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Yıldırım D, Ozic C, Ensari Y. Expression and Characterization of a New Self-Sufficient P450 Monooxygenase (P450 AZC1) from Azorhizobium caulinodans. Chembiochem 2023:e202300065. [PMID: 37171207 DOI: 10.1002/cbic.202300065] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 05/11/2023] [Accepted: 05/12/2023] [Indexed: 05/13/2023]
Abstract
Oxyfunctionalization of non-activated carbon bonds by P450 monooxygenases have drawn great industrial attraction. Self-sufficient P450s containing catalytic heme and reductase domains in a single polypeptide chain offer many advantages since they do not require external electron transfer partners. Here, we report the first P450 enzyme identified and expressed from Azorhizobium caulinodans. Firstly, expression conditions of P450 AZC1 were optimized for enhanced expression in E.coli. The highest P450 content was obtained in E.coli Rosetta DE3 plysS when it was incubated in TB media supplemented with 0.75 mM IPTG, 0.5 mM ALA, 0.75 mM FeCl3 at 25 °C for 24 hours. Subsequently, the purified enzyme showed broad substrate spectrum including fatty acids, linear and cyclic alkanes, aromatics and pharmaceuticals. Finally, P450 AZC1 showed optimal activity at pH 6.0 and 40 °C and a broad pH and temperature profile, making it a promising candidate for industrial applications.
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Affiliation(s)
- Didem Yıldırım
- Kafkas University: Kafkas Universitesi, Bioengineering, TURKEY
| | - Cem Ozic
- Kafkas University: Kafkas Universitesi, Medical Biology, TURKEY
| | - Yunus Ensari
- Kafkas Universitesi Mühendislik ve Mimarlık Fakültesi, Bioengineering, Merkez Kars, 36100, Kars, TURKEY
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Murakami T, Bodor E, Bodor N. Approaching strategy to increase the oral bioavailability of berberine, a quaternary ammonium isoquinoline alkaloid: Part 2. Development of oral dosage formulations. Expert Opin Drug Metab Toxicol 2023; 19:139-148. [PMID: 37060323 DOI: 10.1080/17425255.2023.2203858] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
INTRODUCTION Berberine (BBR) possesses a wide variety of pharmacological activities. However, the oral bioavailability of BBR is low due to extensive intestinal first-pass metabolism by cytochrome P450s (CYPs), insufficient absorption due to low solubility and P-glycoprotein (P-gp)-mediated efflux transport, and hepatic first-pass metabolism in rats. AREAS COVERED Various dosage formulations were developed to increase the oral bioavailability of BBR by overcoming the reducing factors. This article provides the developing strategy of oral dosage formulations of BBR based on the physicochemical (low solubility, formation of salts/ion-pair complex) and pharmacokinetic properties (substrate of P-gp/CYPs, extensive intestinal first-pass metabolism). Literature was searched by using PubMed. EXPERT OPINION Here, formulations increasing the dissolution rates/solubility; formulations containing a P-gp inhibitor; formulations containing solubilizer exhibiting P-gp and/or CYPs inhibitors; formulations containing absorption enhancers; gastro/duodenal retentive formulations; lipid-based formulations; formulations targeting lymphatic transport; and physicochemical modifications increasing lipophilicity were reviewed. Among these formulations, formulations that can reduce intestinal first-pass metabolisms such as formulations containing CYPs inhibitor(s) and formulations containing absorption enhancer(s) significantly increased the oral bioavailability of BBR. Further studies on other dosing routes that can avoid first-pass metabolism such as the rectal route would also be important to increase the bioavailability of BBR.
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Affiliation(s)
| | - Erik Bodor
- Bodor Laboratories Inc, Miami, Florida33137, USA
| | - Nicholas Bodor
- Bodor Laboratories Inc, Miami, Florida33137, USA
- College of Pharmacy, University of Florida, Gainesville, Florida32611, USA
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Cacabelos R, Carril JC, Corzo L, Pego R, Cacabelos N, Alcaraz M, Muñiz A, Martínez-Iglesias O, Naidoo V. Pharmacogenetics of anxiety and depression in Alzheimer's disease. Pharmacogenomics 2023; 24:27-57. [PMID: 36628952 DOI: 10.2217/pgs-2022-0137] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Anxiety and depression coexist with cognitive impairment in Alzheimer's disease along with other concomitant disorders (>60%), which require multipurpose treatments. Polypharmaceutical regimens cause drug-drug interactions and adverse drug reactions, potentially avoidable in number and severity with the implementation of pharmacogenetic procedures. The accumulation of defective variants (>30 genes per patient in more than 50% of cases) in pharmagenes (pathogenic, mechanistic, metabolic, transporter, pleiotropic) influences the therapeutic response to antidementia, antidepressant and anxiolytic drugs in polyvalent regimens. APOE, CYP1A2, CYP2C9, CYP2C19, CYP2D6, CYP2E1, CYP3A4, CYP3A5, CYP4F2, COMT, MAOB, CHAT, GSTP1, NAT2, SLC30A8, SLCO1B1, ADRA2A, ADRB2, BCHE, GABRA1, HMGCR, HTR2C, IFNL3, NBEA, UGT1A1, ABCB1, ABCC2, ABCG2, SLC6A2, SLC6A3, SLC6A4, MTHFR and OPRM1 variants affect anxiety and depression in Alzheimer's disease.
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Affiliation(s)
- Ramón Cacabelos
- Department of Genomic Medicine, International Center of Neuroscience & Genomic Medicine, EuroEspes Biomedical Research Center, Bergondo, Corunna, 15165, Spain
| | - Juan C Carril
- Department of Genomics & Pharmacogenomics, International Center of Neuroscience & Genomic Medicine, EuroEspes Biomedical Research Center, Bergondo, Corunna, 15165, Spain
| | - Lola Corzo
- Department of Medical Biochemistry, International Center of Neuroscience & Genomic Medicine, EuroEspes Biomedical Research Center, Bergondo, Corunna, 15165, Spain
| | - Rocío Pego
- Department of Neuropsychology, International Center of Neuroscience & Genomic Medicine, EuroEspes Biomedical Research Center, Bergondo, Corunna, 15165, Spain
| | - Natalia Cacabelos
- Department of Medical Documentation, International Center of Neuroscience & Genomic Medicine, EuroEspes Biomedical Research Center, Bergondo, Corunna, 15165, Spain
| | - Margarita Alcaraz
- Department of Nursing, International Center of Neuroscience & Genomic Medicine, EuroEspes Biomedical Research Center, Bergondo, Corunna, 15165, Spain
| | - Adriana Muñiz
- Department of Nursing, International Center of Neuroscience & Genomic Medicine, EuroEspes Biomedical Research Center, Bergondo, Corunna, 15165, Spain
| | - Olaia Martínez-Iglesias
- Department of Medical Epigenetics, International Center of Neuroscience & Genomic Medicine, EuroEspes Biomedical Research Center, Bergondo, Corunna, 15165, Spain
| | - Vinogran Naidoo
- Department of Basic Neuroscience, International Center of Neuroscience & Genomic Medicine, EuroEspes Biomedical Research Center, Bergondo, Corunna, 15165, Spain
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Ren Z, Chen S, Qin X, Li F, Guo L. Study of the roles of cytochrome P450 ( CYPs) in the metabolism and cytotoxicity of perhexiline. Arch Toxicol 2022; 96:3219-3231. [PMID: 36083301 PMCID: PMC10395006 DOI: 10.1007/s00204-022-03369-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 08/25/2022] [Indexed: 12/21/2022]
Abstract
Perhexiline is a prophylactic antianginal agent developed in the 1970s. Although, therapeutically, it remained a success, the concerns of its severe adverse effects including hepatotoxicity caused the restricted use of the drug, and eventually its withdrawal from the market in multiple countries. In the clinical setting, cytochrome P450 (CYP) 2D6 is considered as a possible risk factor for the adverse effects of perhexiline. However, the role of CYP-mediated metabolism in the toxicity of perhexiline, particularly in the intact cells, remains unclear. Using our previously established HepG2 cell lines that individually express 14 CYPs (1A1, 1A2, 1B1, 2A6, 2B6, 2C8, 2C9, 2C18, 2C19, 2D6, 2E1, 3A4, 3A5, and 3A7) and human liver microsomes, we identified that CYP2D6 plays a major role in the hydroxylation of perhexiline. We also determined that CYP1A2, 2C19, and 3A4 contribute to the metabolism of perhexiline. The toxic effect of perhexiline was reduced significantly in CYP2D6-overexpressing HepG2 cells, in comparison to the control cells. In contrast, overexpression of CYP1A2, 2C19, and 3A4 did not show a significant protective effect against the toxicity of perhexiline. Pre-incubation with quinidine, a well-recognized CYP2D6 inhibitor, significantly attenuated the protective effect in CYP2D6-overexpressing HepG2 cells. Furthermore, perhexiline-induced mitochondrial damage, apoptosis, and ER stress were also attenuated in CYP2D6-overexpressing HepG2 cells. These findings suggest that CYP2D6-mediated metabolism protects the cells from perhexiline-induced cytotoxicity and support the clinical observation that CYP2D6 poor metabolizers may have higher risk for perhexiline-induced hepatotoxicity.
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Affiliation(s)
- Zhen Ren
- Division of Biochemical Toxicology, HFT-110, National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, Jefferson, AR, 72079, USA
| | - Si Chen
- Division of Biochemical Toxicology, HFT-110, National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, Jefferson, AR, 72079, USA
| | - Xuan Qin
- Department of Pathology and Immunology, Center for Drug Discovery, Baylor College of Medicine, Houston, TX77030, USA
| | - Feng Li
- Department of Pathology and Immunology, Center for Drug Discovery, Baylor College of Medicine, Houston, TX77030, USA
| | - Lei Guo
- Division of Biochemical Toxicology, HFT-110, National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA), 3900 NCTR Road, Jefferson, AR, 72079, USA.
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Sethi A, Bhandawat A, Pati PK. Engineering medicinal plant-derived CYPs: a promising strategy for production of high-valued secondary metabolites. Planta 2022; 256:119. [PMID: 36378350 PMCID: PMC9664027 DOI: 10.1007/s00425-022-04024-9] [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] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 10/30/2022] [Indexed: 06/16/2023]
Abstract
Cytochorme P450s (CYPs) play a critical role in the catalysis of secondary metabolite biosynthetic pathways. For their commercial use, various strategies for metabolic pathway engineering using CYP as a potential target have been explored. Plants produce a vast diversity of secondary metabolites which are being used to treat various ailments and diseases. Some of these metabolites are difficult to obtain in large quantities limiting their industrial use. Cytochrome P450 enzymes (CYPs) are important catalysts in the biosynthesis of highly valued secondary metabolites, and are found in all domains of life. With the development of high-throughput sequencing and high-resolution mass spectrometry, new biosynthetic pathways and associated CYPs are being identified. In this review, we present CYPs identified from medicinal plants as a potential game changer in the metabolic engineering of secondary metabolic pathways. We present the achievements made so far in enhancing the production of important bioactivities through pathway engineering, giving some popular examples. At last, current challenges and possible strategies to overcome the limitations associated with CYP engineering to enhance the biosynthesis of target secondary metabolites are also highlighted.
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Affiliation(s)
- Anshika Sethi
- Department of Biotechnology, Guru Nanak Dev University, Amritsar, Punjab, 143 005, India
| | - Abhishek Bhandawat
- Department of Biotechnology, Guru Nanak Dev University, Amritsar, Punjab, 143 005, India
| | - Pratap Kumar Pati
- Department of Biotechnology, Guru Nanak Dev University, Amritsar, Punjab, 143 005, India.
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Katiyar T, Yadav V, Maurya SS, Hasan F, Singh AP, Yadav S, Singh S, Hadi R, Bhatt MLB, Parmar D. Interaction of cytochrome P450s with environmental risk factors increases their expression and risk to head and neck cancer. Environ Mol Mutagen 2022; 63:255-264. [PMID: 35638572 DOI: 10.1002/em.22495] [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] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 05/17/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
To investigate the role of interaction of tobacco metabolizing polymorphic cytochrome P450s (CYPs) and glutathione S-transferase M1 (GSTM1) with environmental risk factors in modifying the susceptibility to head and neck squamous cell carcinoma (HNSCC), a case-control study with 1250 proven cases of HNSCC and equal number of healthy controls was planned. A small but significant increase in the risk to HNSCC (1-2 fold) in the cases with variant genotypes of CYPs (1A1 or 1B1 or 2E1) increased several folds (up to 13 fold) in regular tobacco or alcohol users. This several fold increase in risk could be due to more than multiplicative interaction observed between the risk genotypes of CYPs and tobacco or alcohol. A synergistic effect was also observed between tobacco as well as alcohol users among cases with risk genotypes of CYPs and GSTM1 that resulted in a further increase in risk (up to 29 fold) to HNSCC. Interestingly, the increase in the risk in tobacco users among cases with variant genotypes of CYPs or a combination of CYPs & GSTM1 (-) was associated with a higher mRNA expression of CYPs when compared to nontobacco users in controls with wild type of genotypes of CYPs & GSTM1. The data suggest that the interaction of genetic and environmental risk factors leads to increased expression of CYPs which may increase the levels of tobacco-derived carcinogens thereby modifying the risk to HNSCC.
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Affiliation(s)
- Tridiv Katiyar
- System Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, Mahatma Gandhi Marg, Lucknow, India
- Department of Biochemistry, Babu Banarsi Das University, Lucknow, India
| | - Vinay Yadav
- System Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, Mahatma Gandhi Marg, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Shailendra S Maurya
- Department of Pediatrics, Division of Hematology-Oncology, Developmental Biology and Genetics, Washington University, St. Louis, Missouri, USA
| | - Feza Hasan
- System Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, Mahatma Gandhi Marg, Lucknow, India
- Department of Biochemistry, Babu Banarsi Das University, Lucknow, India
| | - Arvind P Singh
- Department of Microbiology, Faculty of Life Sciences, Central University of Rajasthan, Ajmer, India
| | - Sanjay Yadav
- Department of Biochemistry, All India Institute of Medical Sciences (AIIMS), Raebareli, India
| | - Sudhir Singh
- Department of Radiotherapy, King George's Medical University, Lucknow, India
| | - Rahat Hadi
- Department of Radiation Oncology, Dr. Ram Manohar Lohia Institute of Medical Sciences, Lucknow, India
| | - Madan Lal B Bhatt
- Department of Radiotherapy, King George's Medical University, Lucknow, India
| | - Devendra Parmar
- System Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, Mahatma Gandhi Marg, Lucknow, India
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Lee YT, Tan YJ, Mok PY, Kaur G, Sreenivasan S, Falasca M, Oon CE. Sex-divergent expression of cytochrome P450 and SIRTUIN 1-7 proteins in toxicity evaluation of a benzimidazole-derived epigenetic modulator in mice. Toxicol Appl Pharmacol 2022; 445:116039. [PMID: 35489524 DOI: 10.1016/j.taap.2022.116039] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 04/21/2022] [Accepted: 04/22/2022] [Indexed: 10/18/2022]
Abstract
Efforts in precision medicine to combat aberrant epigenome have led to the development of epigenetic targeting drugs. We have previously reported the capability of the BZD9L1 epigenetic modulator to impede colorectal tumour growth in vitro and in vivo through sirtuin (SIRT) inhibition. Although most benzimidazole derivatives are commonly less toxic, their effects on SIRTs and cytochrome P450 (CYP) regulations have not been explored alongside toxicity assessments. SIRTs are histone deacetylases that are crucial in maintaining metabolic homeostasis, whereas CYP is essential in drug metabolism. This study aims to determine the toxicology profile of BZD9L1 through oral acute and repeated dose toxicity evaluations, along with molecular analyses of SIRT, CYP and relevant toxicity markers through western blot and quantitative polymerase chain reaction (qPCR). BZD9L1 demonstrated no sign of acute toxicity at the limit dose (2000 mg/kg). The 28-day toxicity study highlighted the tolerability of repeated dose administration without adverse effects. BZD9L1 showed a sex-divergent regulation of hepatic SIRT1-7, CYP2A5 and CYP2D proteins. Furthermore, BZD9L1 did not induce the expression of organ injury proteins or alter the gene expression of cellular function indicators in mouse liver and kidneys, hence demonstrating, at least in part, the safety of BZD9L1 in short-term evaluations. The present study cautions for personalised strategies when employing benzimidazole-derived epigenetic therapeutics.
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Affiliation(s)
- Yeuan Ting Lee
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Yi Jer Tan
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Pei Yi Mok
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Gurjeet Kaur
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Sasidharan Sreenivasan
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Marco Falasca
- Curtin Medical School, Curtin Health Innovation Research Institute (CHIRI), Curtin University, GPO Box U1987, Perth, WA 6845, Australia
| | - Chern Ein Oon
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 Penang, Malaysia.
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Chatuphonprasert W, Sukkasem N, Ellinger I, Jarukamjorn K. Plumbagin and Plumbago indica Differentially Modulated Cytochrome P450 and Transporter Profiles in BeWo and HepG2 Cells. Pak J Biol Sci 2021; 24:1195-1201. [PMID: 34842392 DOI: 10.3923/pjbs.2021.1195.1201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
<b>Background and Objective:</b> The medicinal herb <i>Plumbago indica</i> (PI) and its major constituent plumbagin have reported pharmacological properties but there is a lack of information about their herb-drug interactions. The effects of methanolic (PI-MeOH) and ethanolic (PI-EtOH) crude extracts of PI and plumbagin on the expression of cytochrome P450s (<i>CYP1A2</i>, <i>CYP2E1</i> and <i>CYP3A4</i>) and transporters (<i>ABCC1</i>, <i>ABCG2</i> and <i>SLC22A11</i>) were investigated in BeWo and HepG2 cells. <b>Materials and Methods:</b> BeWo or HepG2 cells were treated with 0.5-5 μM plumbagin or 25-500 μg mL<sup>1</sup> of PI-MeOH or PI-EtOH for 24 hrs. Total RNA was extracted and mRNA expression of CYPs and transporters were determined using RT-qPCR. <b>Results:</b> PI and plumbagin affected mRNA expression differently in the two tested cell types. In BeWo cells, all concentrations of PI-MeOH induced <i>CYP2E1</i>, 100 and 500 μg Ml<sup>1</sup> PI-MeOH and PI-EtOH up-regulated <i>CYP1A2</i>, <i>CYP3A4 </i>and <i>ABCG2 </i>and 500 μg mL<sup>1</sup> PI-EtOH induced <i>ABCG2</i> expression. Plumbagin suppressed <i>CYP1A2</i> and induced <i>SLC22A11 </i>expression at the highest concentration, 5 μM. In HepG2 cells, 5 μM plumbagin and 500 μg Ml<sup>1</sup> PI-EtOH suppressed <i>CYP3A4 </i>expression and 500 μg mL<sup>1</sup> PI-MeOH and PI-EtOH up-regulated <i>CYP1A2</i> and <i>CYP2E1 </i>expression. <i>ABCC1</i> expression was induced by all treatments while <i>ABCG2</i> and <i>SLC22A11 </i>were induced only by 500 μg mL<sup>1</sup> PI-MeOH and PI-EtOH. <b>Conclusion:</b> The use of PI or plumbagin supplements in large quantities or for long periods should be carefully considered due to the risk of herbal drug interactions via modulated expression of CYPs and transporters.
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Li B, Li J, Chai Y, Huang Y, Li L, Wang D, Wang Z. Targeted mutagenesis of CYP76AK2 and CYP76AK3 in Salvia miltiorrhiza reveals their roles in tanshinones biosynthetic pathway. Int J Biol Macromol 2021; 189:455-463. [PMID: 34419551 DOI: 10.1016/j.ijbiomac.2021.08.112] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 08/13/2021] [Accepted: 08/14/2021] [Indexed: 10/20/2022]
Abstract
Salvia miltiorrhiza Bunge, belonging to Lamiaceae family, is one of the most important Chinese medicinal herbs. The dried roots, also called Danshen in Chinese, are usually used in the formula of Chinese traditional medicine due to the bioactive constituents known as phenolic acids and tanshinones, which are a group of abietane nor-diterpenoid quinone natural products. Cytochrome P450 enzymes (CYPs) usually play crucial roles in terpenoids synthesis, especially in hydroxylation processes. Up to now, several important P450 enzymes, such as CYP76AH1, CYP76AH3, CYP76AK1, CYP71D373, and CYP71D375, have been functionally characterized in the tanshinones biosynthetic pathway. Nevertheless, the tanshinones biosynthesis is a so complex network that more P450 enzymes should be identified and characterized. Here, we report two novel P450 enzymes CYP76AK2 and CYP76AK3 that are involved in tanshinones biosynthetic pathway. These two P450 enzymes were highly homologous to previously reported CYP76AK1 and showed the same expression profile as CYP76AK1. Also, CYP76AK2 and CYP76AK3 could be stimulated by MeJA and SA, resulting in increased expression. We used a triple-target CRISPR/Cas9 system to generate targeted mutagenesis of CYP76AK2 and CYP76AK3 in S. miltiorrhiza. The content of five major tanshinones was significantly reduced in both cyp76ak2 and cyp76ak3 mutants, indicating that the two enzymes might be involved in the biosynthesis of tanshinones. This study would provide a foundation for the catalytic function identification of CYP76AK2 and CYP76AK3, and further enrich the understanding of the network of tanshinones secondary metabolism synthesis as well.
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Affiliation(s)
- Bin Li
- National Engineering Laboratory for Resource Development of Endangered Chinese Crude Drugs in Northwest China, Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Jiawen Li
- National Engineering Laboratory for Resource Development of Endangered Chinese Crude Drugs in Northwest China, Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Yaqian Chai
- National Engineering Laboratory for Resource Development of Endangered Chinese Crude Drugs in Northwest China, Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Yaya Huang
- National Engineering Laboratory for Resource Development of Endangered Chinese Crude Drugs in Northwest China, Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Lin Li
- National Engineering Laboratory for Resource Development of Endangered Chinese Crude Drugs in Northwest China, Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Donghao Wang
- National Engineering Laboratory for Resource Development of Endangered Chinese Crude Drugs in Northwest China, Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Zhezhi Wang
- National Engineering Laboratory for Resource Development of Endangered Chinese Crude Drugs in Northwest China, Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, China.
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Chen Z, Xie J, Li Q, Hu K, Yang Z, Yu H, Liu Y. Human CYP enzyme-activated clastogenicity of 2-ethylhexyl diphenyl phosphate (a flame retardant) in mammalian cells. Environ Pollut 2021; 285:117527. [PMID: 34380225 DOI: 10.1016/j.envpol.2021.117527] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 02/21/2021] [Revised: 05/30/2021] [Accepted: 06/01/2021] [Indexed: 06/13/2023]
Abstract
2-Ethylhexyl diphenyl phosphate (EHDPP) is a common flame retardant and environmental pollutant, exposing humans with endocrinal disrupting potentials. Its mutagenicity, especially following metabolism, remains unclear. In this study, molecular docking analysis indicated that EHDPP was a potential substrate for several human CYP enzymes except for CYP1A1. Among V79-derived cell lines genetically engineered for the expression of each CYP, EHDPP (6 h exposure/18 h recovery) did not induce micronuclei in the V79 or V79-derived cells expressing human CYP1A1, however, it was positive in V79-derived cell lines expressing human CYP2E1, 3A4, and 2B6. In a human hepatoma (HepG2) cell line, EHDPP (48 h exposure) moderately induced micronuclei, which was blocked by 1-aminobenzotriazole (ABT, 60 μM, inhibitor of CYPs); pretreating HepG2 cells with bisphenol AF, another organic pollutant as inducer of CYPs (0.1 μM for 16 h), significantly potentiated micronuclei formation by EHDPP, threshold being decreased from 10 to 1.25 μM. This effect was blocked by ABT, drastically reduced by ketoconazole (inhibiting CYP3A expression/activity), and moderately inhibited by trans-1,2-dichloroethylene (selective CYP2E1 inhibitor). Immunofluorescent centromere protein B staining indicated that EHDPP-induced micronuclei in V79-derived cell lines expressing human CYP2E1 and 3A4 were predominantly centromere-negative, and that in HepG2 cells pretreated with bisphenol AF (for inducing multiple CYPs) were purely centromere-negative. In bisphenol AF-pretreated HepG2 cells EHDPP potently induced DNA breaks, as indicated by the comet assay and Western blot analysis of γ-H2AX. In conclusion, our study suggests that EHDPP is potently clastogenic, following activation by several human CYP enzymes, CYP3A4 being a major one.
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Affiliation(s)
- Zhihong Chen
- Department of Toxicology, School of Public Health, (Guangdong Provincial Key Laboratory of Tropical Disease Research), Southern Medical University, 1023 S. Shatai Road, Guangzhou, 510515, China
| | - Jiayi Xie
- Department of Toxicology, School of Public Health, (Guangdong Provincial Key Laboratory of Tropical Disease Research), Southern Medical University, 1023 S. Shatai Road, Guangzhou, 510515, China
| | - Qing Li
- Department of Dietetics, Nanfang Hospital, Southern Medical University, 1838 N. Guangzhou Avenue, Guangzhou, 510515, China
| | - Keqi Hu
- Department of Toxicology, School of Public Health, (Guangdong Provincial Key Laboratory of Tropical Disease Research), Southern Medical University, 1023 S. Shatai Road, Guangzhou, 510515, China
| | - Zongying Yang
- Department of Toxicology, School of Public Health, (Guangdong Provincial Key Laboratory of Tropical Disease Research), Southern Medical University, 1023 S. Shatai Road, Guangzhou, 510515, China
| | - Hang Yu
- Department of Toxicology, School of Public Health, (Guangdong Provincial Key Laboratory of Tropical Disease Research), Southern Medical University, 1023 S. Shatai Road, Guangzhou, 510515, China
| | - Yungang Liu
- Department of Toxicology, School of Public Health, (Guangdong Provincial Key Laboratory of Tropical Disease Research), Southern Medical University, 1023 S. Shatai Road, Guangzhou, 510515, China.
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Choi SM, Pham VC, Lee S, Kim JA. Metabolism of Diterpenoids Derived from the Bark of Cinnamomum cassia in Human Liver Microsomes. Pharmaceutics 2021; 13:1316. [PMID: 34452277 DOI: 10.3390/pharmaceutics13081316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/17/2021] [Accepted: 08/20/2021] [Indexed: 11/30/2022] Open
Abstract
Cinnamomum cassia L. is used as a spice and flavoring agent as well as a traditional medicine worldwide. Diterpenoids, a class of compounds present in C. cassia, have various pharmacological effects, such as anti-inflammatory, antitumor, and antibacterial activities; however, there are insufficient studies on the metabolism of diterpenoids. In this study, the metabolism of seven diterpenoids, namely, anhydrocinnzeylanol, anhydrocinnzeylanine (AHC), cinncassiol A, cinncassiol B, cinnzeylanol, cinnzeylanone, and cinnzeylanine, obtained from the bark of C. cassia was studied in human liver microsomes (HLMs). All studied diterpenoids, except for AHC, exhibited strong metabolic stability; however, AHC was rapidly metabolized to 3% in HLMs in the presence of β-NADPH. Using a high-resolution quadrupole-orbitrap mass spectrometer, 20 metabolites were identified as dehydrogenated metabolites (M1–M3), dehydrogenated and oxidated metabolites (M4–M10), mono-oxidated metabolites (M11–M13), or dioxidated metabolites (M14–M20). In addition, CYP isoforms involved in AHC metabolism were determined by profiling metabolites produced after incubation in 11 recombinant cDNA-expressed CYP isoforms. Thus, the diterpenoid compound AHC was identified in a metabolic pathway involving CYP3A4 in HLMs.
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Diab T, Alkafaas SS, Shalaby TI, Hessien M. Paclitaxel Nanoparticles Induce Apoptosis and Regulate TXR1, CYP3A4 and CYP2C8 in Breast Cancer and Hepatoma Cells. Anticancer Agents Med Chem 2021; 20:1582-1591. [PMID: 32364081 DOI: 10.2174/1871520620666200504071530] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 01/31/2020] [Accepted: 02/18/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND OBJECTIVE Although the anticancer potentials of water-insoluble drugs are improved by nanoformulation, other intervening factors may contribute in the drug efficacy. This work was designated to explore the effect of paclitaxel-loaded Poly(Lactic-co-Glycolic Acid) (PLGA) nanoparticles on the viability of cancer cells, the expression of Taxol Resistance gene I (TXR1) and paclitaxel metabolizing genes. METHODS Paclitaxel loaded PLGA Nanoparticles (PTX-NPs) were prepared, physically characterized and used in the treatment of breast adenocarcinoma cells (MCF-7) and hepatoma cells (HepG2). Cells viability and apoptosis were investigated. In parallel, RNA was isolated, reverse transcribed and used to monitor the expression levels of TXR1, CYP 3A4 and CYP2C8 genes. RESULTS PTX-NPs were characterized by transmission electron microscopy to be of a nano-size sphere-like shape. FTIR analysis revealed good coupling between PTX and PLGA. The encapsulation efficiency was 99% and the drug release demonstrated a progressive releasing phase followed by slower and sustained releasing phases. Although HepG2 cells demonstrated more resistance to PTX than MCF-7 cells, both cell types were more responsive to PTX-NPS compared to PTX. The IC50 values decreased from 19.3 to 6.7 in breast cancer cells and from 42.5 to 13.1μg/ml in hepatoma cells. The apoptosis was the key mechanism in both cells, where at least 44% of cells underwent apoptosis. The expression of TXR1 decreased when either cells were treated with PTX-NPs, respectively, meanwhile the expressions of CYP3A4 and CYP2C8 were increased. CONCLUSION Taken together, this in vitro study reports the associations between the enhanced responsiveness of MCF-7 and HepG2 cells to PLGA-loaded paclitaxel nanoparticles and the accompanying decrease in the cells resistance to the PTX and its enhanced metabolism.
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Affiliation(s)
- Thoria Diab
- Department of Chemistry, Division of Biochemistry, Faculty of Science, Tanta University, Tanta, Egypt
| | - Samar S Alkafaas
- Department of Chemistry, Division of Biochemistry, Faculty of Science, Tanta University, Tanta, Egypt
| | - Thanaa I Shalaby
- Department of Medical Biophysics, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Mohamed Hessien
- Department of Chemistry, Division of Biochemistry, Faculty of Science, Tanta University, Tanta, Egypt
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Kumar D, Trivedi N. Disease-drug and drug-drug interaction in COVID-19: Risk and assessment. Biomed Pharmacother 2021; 139:111642. [PMID: 33940506 DOI: 10.1016/j.biopha.2021.111642] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 04/11/2021] [Accepted: 04/19/2021] [Indexed: 12/15/2022] Open
Abstract
COVID-19 is announced as a global pandemic in 2020. Its mortality and morbidity rate are rapidly increasing, with limited medications. The emergent outbreak of COVID-19 prompted by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) keeps spreading. In this infection, a patient's immune response plays pivotal role in the pathogenesis. This inflammatory factor was shown by its mediators that, in severe cases, reach the cytokine at peaks. Hyperinflammatory state may sparks significant imbalances in transporters and drug metabolic machinery, and subsequent alteration of drug pharmacokinetics may result in unexpected therapeutic response. The present scenario has accounted for the requirement for therapeutic opportunities to relive and overcome this pandemic. Despite the diminishing developments of COVID-19, there is no drug still approved to have significant effects with no side effect on the treatment for COVID-19 patients. Based on the evidence, many antiviral and anti-inflammatory drugs have been authorized by the Food and Drug Administration (FDA) to treat the COVID-19 patients even though not knowing the possible drug-drug interactions (DDI). Remdesivir, favipiravir, and molnupiravir are deemed the most hopeful antiviral agents by improving infected patient’s health. Dexamethasone is the first known steroid medicine that saved the lives of seriously ill patients. Some oligopeptides and proteins have also been using. The current review summarizes medication updates to treat COVID-19 patients in an inflammatory state and their interaction with drug transporters and drug-metabolizing enzymes. It gives an opinion on the potential DDI that may permit the individualization of these drugs, thereby enhancing the safety and efficacy.
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Donia T, Khedr S, Salim EI, Hessien M. Trichostatin A sensitizes hepatoma cells to Taxol more than 5-Aza-dC and dexamethasone. Drug Metab Pers Ther 2021; 36:299-309. [PMID: 34773731 DOI: 10.1515/dmpt-2020-0186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 03/16/2021] [Indexed: 11/15/2022]
Abstract
OBJECTIVES This work was designed to compare the sensitizing effects of epigenetic modifiers on cancer cells vs. that of glucocorticoids. Also, to evaluate their effects on genes involved in epigenetic changes and drug metabolism. METHODS Hepatoma cells (HepG2) were treated with the anticancer drug (Taxol), with a histone deacetylase inhibitor (Trichostatin A [TSA]), DNA methyltransferase inhibitor (5-Aza-dC) or dexamethasone (DEX). Cytotoxicity was assessed by MTT assay and the apoptosis was determined by Annexin V-FITC. The expression levels of HDAC1, HDAC3, Dnmt1, Dnmt3α, CYP1A2, CYP3A4, CYP2B6, CYP2C19 and CYP2D6 were monitored by qRT-PCR. RESULTS TSA, synergistically enhanced cells sensitivity with the anticancer effect of Taxol more than 5-Aza-dC and DEX. This was evidenced by the relative decrease in IC50 in cells cotreated with Taxol + TSA, Taxol + 5-Aza-dC or Taxol + DEX. Apoptosis was induced in 51.2, 16.9 and 41.3% of cells, respectively. In presence of Taxol, TSA induced four-fold increase in the expression of HDAC1 and downregulated Dnmt1&3α genes. CYP2D6 demonstrated progressive expression (up to 28-fold) with the increasing number of drugs. Moreover, the isoform overexpressed in cells treated with TSA + Taxol > DEX + Taxol > 5-Aza-dC + Taxol (6.4, 4.6 and 2.99, respectively). The investigated genes were clustered in two distinct subsets, where no coregulation was observed between HDAC1 and HDAC3. However, tight pairwise correlation-based cluster was seen between (CYP3A4/Dnmt3α and CYP2D6/CYP2C19). CONCLUSIONS The data reflects the sensitizing effect of acetylation modification by TSA on the responsiveness of hepatoma cells to anticancer therapy. The effect of histone deacetylase inhibition was more than hypomethylation and glucocorticoid effects. TSA exerts its role through its modulatory role on epigenetics and drugs metabolizing genes. Other modifiers (5-Aza-dC and DEX), however may adopt different mechanisms.
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Affiliation(s)
- Thoria Donia
- Division of Biochemistry, Department of Chemistry, Faculty of Science, Tanta University, Tanta, Egypt
| | - Sherien Khedr
- College of Pharmacy, Arab Academy for Science, Technology & Maritime Transport, Alexandria, Egypt
| | - Elsayed I Salim
- Department of Zoology, Faculty of Science, Tanta University, Tanta, Egypt
| | - Mohamed Hessien
- Division of Biochemistry, Department of Chemistry, Faculty of Science, Tanta University, Tanta, Egypt
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Donia T, Khedr S, Salim EI, Hessien M. Trichostatin A sensitizes hepatoma cells to Taxol more than 5-Aza-dC and dexamethasone. Drug Metab Pers Ther 2021; 0:dmdi-2020-0186. [PMID: 33818027 DOI: 10.1515/dmdi-2020-0186] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 03/16/2021] [Indexed: 11/15/2022]
Abstract
OBJECTIVES This work was designed to compare the sensitizing effects of epigenetic modifiers on cancer cells vs. that of glucocorticoids. Also, to evaluate their effects on genes involved in epigenetic changes and drug metabolism. METHODS Hepatoma cells (HepG2) were treated with the anticancer drug (Taxol), with a histone deacetylase inhibitor (Trichostatin A [TSA]), DNA methyltransferase inhibitor (5-Aza-dC) or dexamethasone (DEX). Cytotoxicity was assessed by MTT assay and the apoptosis was determined by Annexin V-FITC. The expression levels of HDAC1, HDAC3, Dnmt1, Dnmt3α, CYP1A2, CYP3A4, CYP2B6, CYP2C19 and CYP2D6 were monitored by qRT-PCR. RESULTS TSA, synergistically enhanced cells sensitivity with the anticancer effect of Taxol more than 5-Aza-dC and DEX. This was evidenced by the relative decrease in IC50 in cells cotreated with Taxol + TSA, Taxol + 5-Aza-dC or Taxol + DEX. Apoptosis was induced in 51.2, 16.9 and 41.3% of cells, respectively. In presence of Taxol, TSA induced four-fold increase in the expression of HDAC1 and downregulated Dnmt1&3α genes. CYP2D6 demonstrated progressive expression (up to 28-fold) with the increasing number of drugs. Moreover, the isoform overexpressed in cells treated with TSA + Taxol > DEX + Taxol > 5-Aza-dC + Taxol (6.4, 4.6 and 2.99, respectively). The investigated genes were clustered in two distinct subsets, where no coregulation was observed between HDAC1 and HDAC3. However, tight pairwise correlation-based cluster was seen between (CYP3A4/Dnmt3α and CYP2D6/CYP2C19). CONCLUSIONS The data reflects the sensitizing effect of acetylation modification by TSA on the responsiveness of hepatoma cells to anticancer therapy. The effect of histone deacetylase inhibition was more than hypomethylation and glucocorticoid effects. TSA exerts its role through its modulatory role on epigenetics and drugs metabolizing genes. Other modifiers (5-Aza-dC and DEX), however may adopt different mechanisms.
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Affiliation(s)
- Thoria Donia
- Division of Biochemistry, Department of Chemistry, Faculty of Science, Tanta University, Tanta, Egypt
| | - Sherien Khedr
- Division of Biochemistry, Department of Chemistry, Faculty of Science, Tanta University, Tanta, Egypt
| | - Elsayed I Salim
- Department of Zoology, Faculty of Science, Tanta University, Tanta, Egypt
| | - Mohamed Hessien
- Division of Biochemistry, Department of Chemistry, Faculty of Science, Tanta University, Tanta, Egypt
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20
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Zhang H, Sanidad KZ, Zhu L, Parsonnet J, Haggerty TD, Zhang G, Cai Z. Frequent occurrence of triclosan hydroxylation in mammals: A combined theoretical and experimental investigation. J Hazard Mater 2021; 407:124803. [PMID: 33338815 DOI: 10.1016/j.jhazmat.2020.124803] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 11/07/2020] [Accepted: 12/06/2020] [Indexed: 06/12/2023]
Abstract
Triclosan (TCS) is a widespread antimicrobial agent with many adverse health risks. Its hepatoxicity invariably points to the activation of constitutive androstane receptor (CAR), which regulates cytochrome P450 (CYP) genes that are critical for oxidative metabolism. Here, we provide the theoretical and experimental evidences showing that metabolic activation of TCS frequently occurs through aromatic hydroxylation in mammals. CYP-mediated oxidation was predicted to take place at each aromatic C‒H bond. Molecular docking and in vitro approaches reveal oxidative reaction could be efficiently catalyzed by CAR-regulated CYP2B6 enzyme. Parallel reaction monitoring (PRM) high-resolution mass spectrometry was utilized to identify and profile TCS oxidative metabolites in paired mouse liver, bile, feces, plasma and urine. We found multiple hydroxylated isomers including the products generated via the NIH shift of chlorine, as well as their subsequent conjugates. These metabolites showed isomer-specific retention in mice. Glucuronide conjugates are more readily excreted than the sulfates. Moreover, for the first time, isomeric hydroxylated metabolites were detected in the urine and stool of human subjects used TCS-contained household and personal care products. Collectively, these findings suggest that hydroxylation is an important, yet often underestimated element that worth considering to fully evaluate the biological fates and health risks of TCS.
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Affiliation(s)
- Hongna Zhang
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, 999077 Hong Kong, China
| | - Katherine Z Sanidad
- Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA; Molecular and Cellular Biology Program, University of Massachusetts, Amherst, MA 01003, USA
| | - Lin Zhu
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, 999077 Hong Kong, China
| | - Julie Parsonnet
- Department of Medicine and Department of Health Research and Policy, Stanford University, Stanford, CA 94305, USA
| | - Thomas D Haggerty
- Department of Medicine and Department of Health Research and Policy, Stanford University, Stanford, CA 94305, USA
| | - Guodong Zhang
- Department of Food Science, University of Massachusetts, Amherst, MA 01003, USA; Molecular and Cellular Biology Program, University of Massachusetts, Amherst, MA 01003, USA.
| | - Zongwei Cai
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, 999077 Hong Kong, China.
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Sasabe H, Koga T, Furukawa M, Matsunaga M, Sasahara K, Hashizume K, Oozone Y, Amunom I, Torii M, Umehara K, Kashiyama E, Takeuchi K. In vitro evaluations for pharmacokinetic drug-drug interactions of a novel serotonin-dopamine activity modulator, brexpiprazole. Xenobiotica 2021; 51:522-535. [PMID: 33663326 DOI: 10.1080/00498254.2021.1897898] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Brexpiprazole, a serotonin-dopamine activity modulator, is indicated for the treatment of schizophrenia and also adjunctive therapy to antidepressants for the treatment of Major Depressive Disorder. To determine the drug-drug interaction risk for cytochrome P450, and SLC and ABC transporters, brexpiprazole and its metabolite, DM-3411 were assessed in this in vitro investigation.Brexpiprazole exhibited weak inhibitory effects (IC50 >13 μmol/L) on CYP2C9, CYP2C19, CYP2D6 and CYP3A4 activities, but had moderate inhibitor activity on CYP2B6 (IC50 8.19 μmol/L). The ratio of systemic unbound concentration (3.8 nmol/L) to the Ki value was sufficiently low. DM-3411 had comparable inhibitory potentials with brexpiprazole only for CYP2D6 and CYP3A4. The mRNA expressions of CYP1A2, CYP2B6 and CYP3A4 were not changed by the exposure of brexpiprazole to human hepatocytes.Brexpiprazole and DM-3411 exhibited weak or no inhibitory effects for hepatic and renal transporters (OATPs, OATs, OCTs, MATE1, and BSEP), except for MATE-2K (0.156 μmol/L of DM-3411), even for which the ratio to systemic unbound concentration (5.3 nmol/L) was sufficiently low.Brexpiprazole effected the functions of P-gp and BCRP with IC50 values of 6.31 and 1.16 μmol/L, respectively, however, the pharmacokinetic alteration was not observed in the clinical concomitant study on P-gp and BCRP substrates.These in vitro data suggest that brexpiprazole is unlikely to cause clinically relevant drug interactions resulting from the effects on CYPs or transporters mediating the absorption, metabolism, and/or disposition of co-administered drugs.
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Affiliation(s)
- Hiroyuki Sasabe
- Drug metabolism and Pharmacokinetics, Tokushima Research Institute, Otsuka Pharmaceutical Co Ltd., Tokushima, Japan
| | - Toshihisa Koga
- Drug metabolism and Pharmacokinetics, Tokushima Research Institute, Otsuka Pharmaceutical Co Ltd., Tokushima, Japan
| | - Masayuki Furukawa
- Drug metabolism and Pharmacokinetics, Tokushima Research Institute, Otsuka Pharmaceutical Co Ltd., Tokushima, Japan
| | - Masayuki Matsunaga
- Drug metabolism and Pharmacokinetics, Tokushima Research Institute, Otsuka Pharmaceutical Co Ltd., Tokushima, Japan
| | - Katsunori Sasahara
- Drug metabolism and Pharmacokinetics, Tokushima Research Institute, Otsuka Pharmaceutical Co Ltd., Tokushima, Japan
| | - Kenta Hashizume
- ADME & Tox. Research Institute, Sekisui Medical Co., Ltd., Naka-gun, Japan
| | - Yoshihiro Oozone
- ADME & Tox. Research Institute, Sekisui Medical Co., Ltd., Naka-gun, Japan
| | | | - Mikako Torii
- Kashima Laboratory, LSIM Safety Institute Corporation, Kamisu-shi, Japan
| | - Ken Umehara
- Drug metabolism and Pharmacokinetics, Tokushima Research Institute, Otsuka Pharmaceutical Co Ltd., Tokushima, Japan
| | - Eiji Kashiyama
- Drug metabolism and Pharmacokinetics, Tokushima Research Institute, Otsuka Pharmaceutical Co Ltd., Tokushima, Japan
| | - Kenji Takeuchi
- Drug metabolism and Pharmacokinetics, Tokushima Research Institute, Otsuka Pharmaceutical Co Ltd., Tokushima, Japan
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Shao Y, Schiwy A, Glauch L, Henneberger L, König M, Mühlenbrink M, Xiao H, Thalmann B, Schlichting R, Hollert H, Escher BI. Optimization of a pre-metabolization procedure using rat liver S9 and cell-extracted S9 in the Ames fluctuation test. Sci Total Environ 2020; 749:141468. [PMID: 32827816 DOI: 10.1016/j.scitotenv.2020.141468] [Citation(s) in RCA: 4] [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: 04/19/2020] [Revised: 08/01/2020] [Accepted: 08/02/2020] [Indexed: 06/11/2023]
Abstract
Many environmental pollutants pose a toxicological hazard only after metabolic activation. In vitro bioassays using cell lines or bacteria have often no or reduced metabolic activity, which impedes their use in the risk assessment. To improve the predictive capability of in vitro assays, external metabolization systems like the liver S9 fraction are frequently combined with in vitro toxicity assays. While it is typical for S9 fractions that samples and testing systems are combined in the same exposure system, we propose to separate the metabolism step and toxicity measurement. This allows for a modular combination of metabolic activation by enzymes isolated from rat liver (S9) or a biotechnological alternative (ewoS9R) with in vitro bioassays that lack metabolic capacity. Benzo(a)pyrene and 2-aminoanthracene were used as model compounds to optimize the conditions for the S9 metabolic degradation/activation step. The Ames assay with Salmonella typhimurium strains TA98 and TA100 was applied to validate the set-up of decoupling the S9 activation/metabolism from the bioassay system. S9 protein concentration of 0.25 mgprotein/mL, a supplement of 0.13 mM NADPH and a pre-incubation time of 100 min are recommended for activation of samples prior to dosing them to in vitro bioassays using the regular dosing protocols of the respective bioassay. EwoS9R performed equally well as Moltox S9, which is a step forward in developing true animal-free in vitro bioassays. After pre-incubation with S9 fraction, chemicals induced bacteria revertants in both the TA98 and the TA100 assay as efficiently as the standard Ames assay. The pre-incubation of chemicals with S9 fraction could serve for a wide range of cellular in vitro assays to efficiently combine activation and toxicity measurement, which may greatly facilitate the application of these assays for chemical hazard assessment and monitoring of environmental samples.
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Affiliation(s)
- Ying Shao
- UFZ - Helmholtz Centre for Environmental Research, Department of Cell Toxicology, Permoser Str. 15, 04318 Leipzig, Germany; Key Laboratory of the Three Gorges Reservoir Eco-environment, Ministry of Education, Chongqing University, Shazheng street 174, Shapingba, 400044 Chongqing, China.
| | - Andreas Schiwy
- Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany; EWOMIS GmbH, Schießstraße 26c, 63486 Bruchköbel, Germany; Department of Evolutionary Ecology and Ecotoxicology, Goethe University, Max-von-Laue-Str. 13, 60438 Frankfurt/Main, Germany
| | - Lisa Glauch
- UFZ - Helmholtz Centre for Environmental Research, Department of Cell Toxicology, Permoser Str. 15, 04318 Leipzig, Germany
| | - Luise Henneberger
- UFZ - Helmholtz Centre for Environmental Research, Department of Cell Toxicology, Permoser Str. 15, 04318 Leipzig, Germany
| | - Maria König
- UFZ - Helmholtz Centre for Environmental Research, Department of Cell Toxicology, Permoser Str. 15, 04318 Leipzig, Germany
| | - Marie Mühlenbrink
- UFZ - Helmholtz Centre for Environmental Research, Department of Cell Toxicology, Permoser Str. 15, 04318 Leipzig, Germany
| | - Hongxia Xiao
- Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany; EWOMIS GmbH, Schießstraße 26c, 63486 Bruchköbel, Germany
| | - Beat Thalmann
- EWOMIS GmbH, Schießstraße 26c, 63486 Bruchköbel, Germany
| | - Rita Schlichting
- UFZ - Helmholtz Centre for Environmental Research, Department of Cell Toxicology, Permoser Str. 15, 04318 Leipzig, Germany
| | - Henner Hollert
- Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, Worringerweg 1, 52074 Aachen, Germany; EWOMIS GmbH, Schießstraße 26c, 63486 Bruchköbel, Germany; Department of Evolutionary Ecology and Ecotoxicology, Goethe University, Max-von-Laue-Str. 13, 60438 Frankfurt/Main, Germany
| | - Beate I Escher
- UFZ - Helmholtz Centre for Environmental Research, Department of Cell Toxicology, Permoser Str. 15, 04318 Leipzig, Germany; EWOMIS GmbH, Schießstraße 26c, 63486 Bruchköbel, Germany; Eberhard Karls University of Tübingen, Environmental Toxicology, Centre for Applied Geosciences, 72074 Tubingen, Germany
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Arranz MJ, Salazar J, Hernández MH. Pharmacogenetics of antipsychotics: Clinical utility and implementation. Behav Brain Res 2020; 401:113058. [PMID: 33316324 DOI: 10.1016/j.bbr.2020.113058] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/23/2020] [Accepted: 12/04/2020] [Indexed: 02/06/2023]
Abstract
Decades of research have produced extensive evidence of the contribution of genetic factors to the efficacy and toxicity of antipsychotics. Numerous genetic variants in genes controlling drug availability or involved in antipsychotic processes have been linked to treatment variability. The complex mechanism of action and multitarget profile of most antipsychotic drugs hinder the identification of pharmacogenetic markers of clinical value. Nevertheless, the validity of associations between variants in CYP1A2, CYP2D6, CYP2C19, ABCB1, DRD2, DRD3, HTR2A, HTR2C, BDNF, COMT, MC4R genes and antipsychotic response has been confirmed in independent candidate gene studies. Genome wide pharmacogenomic studies have proven the role of the glutamatergic pathway in mediating antipsychotic activity and have reported novel associations with antipsychotic response. However, only a limited number of the findings, mainly functional variants of CYP metabolic enzymes, have been shown to be of clinical utility and translated into useful pharmacogenetic markers. Based on the currently available information, actionable pharmacogenetics should be reduced to antipsychotics' dose adjustment according to the genetically predicted metabolic status (CYPs' profile) of the patient. Growing evidence suggests that such interventions will reduce antipsychotics' side-effects and increase treatment safety. Despite this evidence, the use of pharmacogenetics in psychiatric wards is minimal. Hopefully, further evidence on the clinical and economic benefits, the development of clinical protocols based on pharmacogenetic information, and improved and cheaper genetic testing will increase the implementation of pharmacogenetic guided prescription in clinical settings.
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Affiliation(s)
- Maria J Arranz
- Fundació Docència i Recerca Mútua Terrassa, Spain; Centro de investigación en Red de Salud Mental, CIBERSAM, Madrid, Spain; PHAGEX Research Group, Universitat Ramon LLull, Spain.
| | - Juliana Salazar
- Translational Medical Oncology Laboratory, Institut d'Investigació Biomèdica Sant Pau (IIB-Sant Pau), Barcelona, Spain; U705, ISCIII Center for Biomedical Research on Rare Diseases (CIBERER), Barcelona, Spain; PHAGEX Research Group, Universitat Ramon LLull, Spain
| | - Marta H Hernández
- PHAGEX Research Group, Universitat Ramon LLull, Spain; School of Health Sciences Blanquerna. University Ramon Llull, Barcelona, Spain
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Li M, Wang C. Traditional uses, phytochemistry, pharmacology, pharmacokinetics and toxicology of the fruit of Tetradium ruticarpum: A review. J Ethnopharmacol 2020; 263:113231. [PMID: 32758577 DOI: 10.1016/j.jep.2020.113231] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [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: 04/30/2020] [Revised: 07/25/2020] [Accepted: 07/29/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The fruit of Tetradium ruticarpum (FTR) known as Tetradii fructus or Evodiae fructus (Wu-Zhu-Yu in Chinese) is a versatile herbal medicine which has been prescribed in Chinese herbal formulas and recognized in Japanese Kampo. FTR has been clinically used to treat various diseases such as headache, vomit, diarrhea, abdominal pain, dysmenorrhea and pelvic inflammation for thousands of years. AIM OF THE REVIEW The present paper aimed to provide comprehensive information on the ethnopharmacology, phytochemistry, pharmacology, pharmacokinetics, drug interaction and toxicology of FTR in order to build up a foundation on the mechanism of ethnopharmacological uses as well as to explore the trends and perspectives for further studies. MATERIALS AND METHODS This review collected the literatures published prior to July 2020 on the phytochemistry, pharmacology, pharmacokinetics and toxicity of FTR. All relevant information on FTR was gathered from worldwide accepted scientific search engines and databases, including Web of Science, PubMed, Elsevier, ACS, ResearchGate, Google Scholar, and Chinese National Knowledge Infrastructure (CNKI). Information was also obtained from local books, PhD. and MSc. Dissertations as well as from Pharmacopeias. RESULTS FTR has been used as an herbal medicine for centuries in East Asia. A total of 165 chemical compounds have been isolated so far and the main chemical compounds of FTR include alkaloids, terpenoids, flavonoids, phenolic acids, steroids, and phenylpropanoids. Crude extracts, processed products (medicinal slices) and pure components of FTR exhibit a wide range of pharmacological activities such as antitumor, anti-inflammatory, antibacterial, anti-obesity, antioxidant, insecticide, regulating central nervous system (CNS) homeostasis, cardiovascular protection. Furthermore, bioactive components isolated from FTR can induce drug interaction and hepatic injury. CONCLUSIONS Therapeutic potential of FTR has been demonstrated with the pharmacological effects on cancer, inflammation, cardiovascular diseases, CNS, bacterial infection and obesity. Pharmacological and pharmacokinetic studies of FTR mostly focus on its main active alkaloids. Further in-depth studies on combined medication and processing approaches mechanisms, pharmacological and toxic effects not limited to the alkaloids, and toxic components of FTR should be designed.
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Affiliation(s)
- Manlin Li
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, The MOE Key Laboratory for Standardization of Chinese Medicines, Shanghai R&D Centre for Standardization of Chinese Medicines, 1200 Cailun Road, Shanghai, 201203, China
| | - Changhong Wang
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, The MOE Key Laboratory for Standardization of Chinese Medicines, Shanghai R&D Centre for Standardization of Chinese Medicines, 1200 Cailun Road, Shanghai, 201203, China.
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Ooka M, Lynch C, Xia M. Application of In Vitro Metabolism Activation in High-Throughput Screening. Int J Mol Sci 2020; 21:ijms21218182. [PMID: 33142951 PMCID: PMC7663506 DOI: 10.3390/ijms21218182] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 09/29/2020] [Revised: 10/25/2020] [Accepted: 10/26/2020] [Indexed: 02/06/2023] Open
Abstract
In vitro methods which incorporate metabolic capability into the assays allow us to assess the activity of metabolites from their parent compounds. These methods can be applied into high-throughput screening (HTS) platforms, thereby increasing the speed to identify compounds that become active via the metabolism process. HTS was originally used in the pharmaceutical industry and now is also used in academic settings to evaluate biological activity and/or toxicity of chemicals. Although most chemicals are metabolized in our body, many HTS assays lack the capability to determine compound activity via metabolism. To overcome this problem, several in vitro metabolic methods have been applied to an HTS format. In this review, we describe in vitro metabolism methods and their application in HTS assays, as well as discuss the future perspectives of HTS with metabolic activity. Each in vitro metabolism method has advantages and disadvantages. For instance, the S9 mix has a full set of liver metabolic enzymes, but it displays high cytotoxicity in cell-based assays. In vitro metabolism requires liver fractions or the use of other metabolically capable systems, including primary hepatocytes or recombinant enzymes. Several newly developed in vitro metabolic methods, including HepaRG cells, three-dimensional (3D) cell models, and organ-on-a-chip technology, will also be discussed. These newly developed in vitro metabolism approaches offer significant progress in dissecting biological processes, developing drugs, and making toxicology studies quicker and more efficient.
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Solé M, Freitas R, Viñas L, Rivera-Ingraham GA. Biomarker considerations in monitoring petrogenic pollution using the mussel Mytilus galloprovincialis. Environ Sci Pollut Res Int 2020; 27:31854-31862. [PMID: 32504435 DOI: 10.1007/s11356-020-09427-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 02/05/2020] [Accepted: 05/22/2020] [Indexed: 06/11/2023]
Abstract
Mussels are worldwide bioindicators in pollution monitoring since they fulfil the requirements for being good sentinels. However, some methodological concerns arise in the use of particular biomarkers, particularly those displaying low enzymatic rates and/or limited responsiveness to chemicals and biological-related variability. In the present study, the suitability of oxidative stress and detoxification parameters when using mussels as sentinels of polycyclic aromatic hydrocarbon (PAH) pollution is addressed. Present results show that the S9 subcellular fraction of the digestive gland in mussels is an adequate and convenient matrix where to measure most pollution-related biomarkers. Furthermore, this work constitutes the first evidence of the potential suitability of using particular carboxylesterase (CE) activities in determining PAHs exposure in mussels. This fact could imply the replacement of more controversial cytochrome P450 components (phase I oxidation), which are only measurable in microsomal fractions, by CEs (measured in S9 fractions) as good alternatives for phase I reactions in PAH-exposed mussels. Some methodological considerations, such as the need of including commercial purified proteins in biomarker determinations for quality assurance, are evaluated.
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Affiliation(s)
- Montserrat Solé
- Institute of Marine Sciences (ICM-CSIC), Pg. Marítim de la Barceloneta 37-49, 08003, Barcelona, Spain.
| | - Rosa Freitas
- Departamento de Biologia & CESAM, Universidade de Aveiro, 3810-193, Aveiro, Portugal
| | - Lucia Viñas
- Instituto Español de Oceanografía (IEO), Centro Oceanográfico de Vigo, Subida a Radio Faro 50, 36390, Vigo, Spain
| | - Georgina A Rivera-Ingraham
- Laboratorio de Fisiología y Genética Marina (FIGEMA), Centro de Estudios Avanzados en Zonas Áridas, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile
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Xing H, Yang J, Ren K, Qin Z, Wang P, Zhang X, Yao Z, Gonzalez FJ, Yao X. Investigation on the metabolic characteristics of isobavachin in Psoralea corylifolia L. (Bu-gu-zhi) and its potential inhibition against human cytochrome P450s and UDP-glucuronosyltransferases. J Pharm Pharmacol 2020; 72:1865-1878. [PMID: 32750744 DOI: 10.1111/jphp.13337] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 06/09/2020] [Accepted: 06/21/2020] [Indexed: 01/16/2023]
Abstract
OBJECTIVES Isobavachin is a phenolic with anti-osteoporosis activity. This study aimed to explore its metabolic fates in vivo and in vitro, and to investigate the potential drug-drug interactions involving CYPs and UGTs. METHODS Metabolites of isobavachin in mice were first identified and characterized. Oxidation and glucuronidation study were performed using liver and intestine microsomes. Reaction phenotyping, activity correlation analysis and relative activity factor approaches were employed to identify the main CYPs and UGTs involved in isobavachin metabolism. Through kinetic modelling, inhibition mechanisms towards CYPs and UGTs were also explored. KEY FINDINGS Two glucuronides (G1 - G2) and three oxidated metabolites (M1 - M3) were identified in mice. Additionally, isobavachin underwent efficient oxidation and glucuronidation by human liver microsomes and HIM with CLint values from 5.53 to 148.79 μl/min per mg. CYP1A2, 2C19 contributed 11.3% and 17.1% to hepatic metabolism of isobavachin, respectively, with CLint values from 8.75 to 77.33 μl/min per mg. UGT1As displayed CLint values from 10.73 to 202.62 μl/min per mg for glucuronidation. Besides, significant correlation analysis also proved that CYP1A2, 2C19 and UGT1A1, 1A9 were main contributors for the metabolism of isobavachin. Furthermore, mice may be the appropriate animal model for predicting its metabolism in human. Moreover, isobavachin exhibited broad inhibition against CYP2B6, 2C9, 2C19, UGT1A1, 1A9, 2B7 with Ki values from 0.05 to 3.05 μm. CONCLUSIONS CYP1A2, 2C19 and UGT1As play an important role in isobavachin metabolism. Isobavachin demonstrated broad-spectrum inhibition of CYPs and UGTs.
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Affiliation(s)
- Han Xing
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jing Yang
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Kaidi Ren
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zifei Qin
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou, China
| | - Peile Wang
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiaojian Zhang
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhihong Yao
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou, China.,College of Pharmacy, Jinan University, Guangzhou, China
| | - Frank J Gonzalez
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Xinsheng Yao
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou, China.,College of Pharmacy, Jinan University, Guangzhou, China
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Choi SM, Kim Y, Lee J, Kim JH, Lee T, Min BS, Kim JA, Lee S. Characterization of hydrocoptisonine metabolites in human liver microsomes using a high-resolution quadrupole-orbitrap mass spectrometer. Xenobiotica 2020; 50:1423-1433. [PMID: 32654586 DOI: 10.1080/00498254.2020.1795304] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Hydrocoptisonine is a new compound that has been isolated from the rhizomes of Coptis chinensis, which belongs to the Ranunculaceae family of Chinese medicines. Although studies on C. chinensis have been reported, the metabolic pathway of hydrocoptisonine in human liver microsomes (HLMs) remains unelucidated. We identified 13 metabolites in HLMs, including six Phase I metabolites and seven glucuronide conjugates, using a high-resolution quadrupole-orbitrap mass spectrometer. The major metabolic pathway was the O-demethylation and mono-hydroxylation of hydrocoptisonine in HLMs. Notably, M3 metabolite was O-demethylated in dioxolane structures (cyclohexa-3,5-diene-1,2-dione), which was mediated by cytochrome P450 1A2. The locations of hydroxylation and hydroxyl-glucuronidation were identified by analyzing the signature fragments generated as a result of tandem mass spectrometry, indicating hydroxylation at an aliphatic chain or aromatic ring. We determined whether the hydroxylation and glucuronidation occurred in an aromatic moiety (M5 and M12) or an aliphatic moiety (M6 and M13), respectively, based on signature fragments of the metabolites.
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Affiliation(s)
- Su Min Choi
- BK21 Plus KNU Multi-Omics-based Creative Drug Research Team, College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Younah Kim
- BK21 Plus KNU Multi-Omics-based Creative Drug Research Team, College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Jaeick Lee
- Doping Control Center, Korea Institute of Science and Technology, Seoul, Republic of Korea
| | - Ju-Hyun Kim
- College of Pharmacy, Yeungnam University, Gyeongsan, Republic of Korea
| | - Taeho Lee
- BK21 Plus KNU Multi-Omics-based Creative Drug Research Team, College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Byung Sun Min
- College of Pharmacy, Drug Research and Development Center, Daegu Catholic University, Gyeongsan, Republic of Korea
| | - Jeong Ah Kim
- BK21 Plus KNU Multi-Omics-based Creative Drug Research Team, College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - Sangkyu Lee
- BK21 Plus KNU Multi-Omics-based Creative Drug Research Team, College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, Republic of Korea
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Olivares-Rubio HF, Espinosa-Aguirre JJ. Role of epoxyeicosatrienoic acids in the lung. Prostaglandins Other Lipid Mediat 2020; 149:106451. [PMID: 32294527 DOI: 10.1016/j.prostaglandins.2020.106451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 03/10/2020] [Accepted: 04/02/2020] [Indexed: 12/16/2022]
Abstract
Epoxyeicosatrienoic acids (EETs) are synthetized from arachidonic acid by the action of members of the CYP2C and CYP2J subfamilies of cytochrome P450 (CYPs). The effects of EETs on cardiovascular function, the nervous system, the kidney and metabolic disease have been reviewed. In the lungs, the presence of these CYPs and EETs has been documented. In general, EETs play a beneficial role in this essential tissue. Among the most important effects of EETs in the lungs are the induction of vasorelaxation in the bronchi, the stimulation of Ca2+-activated K+ channels, the induction of vasoconstriction of pulmonary arteries, anti-inflammatory effects induced by asthma, and protection against infection or exposure to chemical substances such as cigarette smoke. EETs also participate in tissue regeneration, but on the downside, they are possibly involved in the progression of lung cancer. More research is necessary to design therapies with EETs for the treatment of lung disease.
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Affiliation(s)
- Hugo F Olivares-Rubio
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ap. Postal 70-228, Ciudad de México, México.
| | - J J Espinosa-Aguirre
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ap. Postal 70-228, Ciudad de México, México.
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30
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Di Nardo G, Gilardi G. Natural Compounds as Pharmaceuticals: The Key Role of Cytochromes P450 Reactivity. Trends Biochem Sci 2020; 45:511-525. [PMID: 32413326 DOI: 10.1016/j.tibs.2020.03.004] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/28/2020] [Accepted: 03/06/2020] [Indexed: 12/16/2022]
Abstract
The design of drugs from natural products is a re-emerging area due to the need for bioactive compounds. The exploitation of natural products and their derivatives obtained by biocatalysis is in line with the higher attention given today to new sustainable technologies that better preserve the environment (green chemistry). The research field of cytochromes P450 (CYPs) is continuously providing new enzymes and mutants that produce metabolites suitable for late-stage functionalization for new potential drugs. This review provides an overview of the exploitation of CYPs as biocatalysts in drug synthesis. Additionally, recent progress in protein and metabolic engineering is provided to show how these enzymes offer a toolbox that can be combined with other biocatalytic or chemical processes to build new platforms for the green production of new drugs.
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Affiliation(s)
- Giovanna Di Nardo
- Department of Life Sciences and Systems Biology, University of Torino, Via Accademia Albertina 13, 10123, Torino, Italy
| | - Gianfranco Gilardi
- Department of Life Sciences and Systems Biology, University of Torino, Via Accademia Albertina 13, 10123, Torino, Italy.
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Ranjit S, Kodidela S, Sinha N, Chauhan S, Kumar S. Extracellular Vesicles from Human Papilloma Virus-Infected Cervical Cancer Cells Enhance HIV-1 Replication in Differentiated U1 Cell Line. Viruses 2020; 12:E239. [PMID: 32098055 DOI: 10.3390/v12020239] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/11/2020] [Accepted: 02/18/2020] [Indexed: 02/07/2023] Open
Abstract
In the current study, we hypothesized that extracellular vesicles (EVs) secreted from human papilloma virus (HPV)-infected cervical cancer cells exacerbate human immunodeficiency virus (HIV)-1 replication in differentiated U1 cell line through an oxidative stress pathway. To test the hypothesis, we treated an HIV-1-infected macrophage cell line (U1) with HPV-infected Caski cell culture supernatant (CCS). We observed a significant increase in HIV-1 replication, which was associated with an increase in the expression of cytochrome P450 (CYPs 1A1 and 2A6) in the CCS-treated U1 cells. Furthermore, we isolated EVs from CCS (CCS-EVs), which showed the presence of CYPs (1A1, 2A6), superoxide dismutase 1 (SOD1), and HPV oncoproteins HPV16 E6. CCS-EVs when exposed to the U1 cells also significantly increased HIV-1 replication. Treatment of antioxidant, CYP1A1 and CYP2A6 inhibitors, and chemodietary agents with antioxidant properties significantly reduced the CCS and CCS-EVs mediated HIV-1 replication in U1 cells. Altogether, we demonstrate that cervical cancer cells exacerbate HIV-1 replication in differentiated U1 cell line via transferring CYPs and HPV oncoproteins through EVs. We also show that the viral replication occurs via CYP and oxidative stress pathways, and the viral replication is also reduced by chemodietary agents. This study provides important information regarding biological interactions between HPV and HIV-1 via EVs leading to enhanced HIV-1 replication.
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Wang H, Cheng X, Liu Y, Li S, Zhang Y, Wang X, Xiang W. Improved milbemycin production by engineering two Cytochromes P450 in Streptomyces bingchenggensis. Appl Microbiol Biotechnol 2020; 104:2935-2946. [PMID: 32043186 DOI: 10.1007/s00253-020-10410-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 01/15/2020] [Accepted: 01/23/2020] [Indexed: 12/25/2022]
Abstract
Milbemycins and their semisynthetic derivatives are recognized as effective and eco-friendly pesticides, whereas the high price limits their widespread applications in agriculture. One of the pivotal questions is the accumulation of milbemycin-like by-products, which not only reduces the yield of the target products milbemycin A3/A4, but also brings difficulty to the purification. With other analogous by-products abolished, α9/α10 and β-family milbemycins remain to be eliminated. Herein, we solved these issues by engineering of post-modification steps. First, Cyp41, a CYP268 family cytochrome P450, was identified to participate in α9/α10 biosynthesis. By deleting cyp41, milbemycin α9/α10 was eliminated with an increase of milbemycin A3/A4 titer from 2382.5 ± 55.7 mg/L to 2625.6 ± 64.5 mg/L. Then, MilE, a CYP171 family cytochrome P450, was determined to be responsible for the generation of the furan ring between C6 and C8a of milbemycins. By further overexpression of milE, the production of β-family milbemycins was reduced by 77.2%. Finally, the titer of milbemycin A3/A4 was increased by 53.1% to 3646.9 ± 69.9 mg/L. Interestingly, overexpression of milE resulted in increased transcriptional levels of milbemycin biosynthetic genes and production of total milbemycins, which implied that the insufficient function of MilE was a limiting factor to milbemycin biosynthesis. Our research not only provides an efficient engineering strategy to improve the production of a commercially important product milbemycins, but also offers the clues for future study about transcriptional regulation of milbemycin biosynthesis.
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Affiliation(s)
- Haiyan Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing, 100193, China.,School of Life Science, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, China
| | - Xu Cheng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing, 100193, China
| | - Yuqing Liu
- School of Life Science, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, China
| | - Shanshan Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing, 100193, China
| | - Yanyan Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing, 100193, China
| | - Xiangjing Wang
- School of Life Science, Northeast Agricultural University, No. 59 Mucai Street, Xiangfang District, Harbin, 150030, China.
| | - Wensheng Xiang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan West Road, Haidian District, Beijing, 100193, China.
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Xiong W, Gao S, Mao J, Wei L, Xie J, Liu J, Bi J, Song X, Li B. CYP4BN6 and CYP6BQ11 mediate insecticide susceptibility and their expression is regulated by Latrophilin in Tribolium castaneum. Pest Manag Sci 2019; 75:2744-2755. [PMID: 30788896 DOI: 10.1002/ps.5384] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 06/20/2018] [Revised: 02/01/2019] [Accepted: 02/17/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Many insect cytochrome P450 proteins (CYPs) are involved in the metabolic detoxification of exogenous compounds such as plant toxins and insecticides. Tribolium castaneum, the red flour beetle, is a major agricultural pest that damages stored grains and cereal products. With the completion of the sequencing of its genome, two T. castaneum species-specific CYP genes, CYP4BN6, and CYP6BQ11, were identified. However, it is unknown whether the functions of most CYPs are shared by TcCYP4BN6 and TcCYP6BQ11, and the upstream regulatory mechanism of these two CYPs remains elusive. RESULTS QRT-PCR analysis indicated that TcCYP4BN6 and TcCYP6BQ11 were both most highly expressed at the late pupal stage and were mainly observed in the head and gut, respectively, of adults. Moreover, the transcripts of these two CYPs were significantly induced by dichlorvos and carbofuran, and RNA interference (RNAi) targeting of each of them enhanced the susceptibility of beetles to these two insecticides. Intriguingly, knockdown of the latrophilin (lph) gene, which has been reported to be related to the insecticide susceptibility, reduced the expression of TcCYP4BN6 and TcCYP6BQ11 after insecticide treatment, suggesting that these two CYP genes are regulated by lph to participate in insecticide susceptibility in T. castaneum. CONCLUSION These results shed new light on the function and mechanism of CYP genes associated with insecticide susceptibility and could facilitate research on appropriate and sustainable pest control management. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Wenfeng Xiong
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Shanshan Gao
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
- College of Biology and Food Engineering, Anyang Institute of Technology, Anyang, China
| | - Jinjuan Mao
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Luting Wei
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Jia Xie
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Juanjuan Liu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Jingxiu Bi
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Xiaowen Song
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Bin Li
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
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Hasan F, Katiyar T, Maurya SS, Yadav V, Yadav S, Pandey R, Mehrotra D, Hadi R, Singh S, Bhatt ML, Parmar D. Similarities in mRNA expression of peripheral blood drug metabolizing enzymes and cancer marker genes with biopsy samples of head and neck cancer patients. Biomarkers 2019; 24:574-583. [PMID: 31002268 DOI: 10.1080/1354750x.2019.1609090] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Purpose: To develop peripheral blood mRNA expression profiles of drug metabolizing enzymes (DMEs) as a surrogate to monitor tobacco induced head and neck squamous cell carcinoma (HNSCC), attempts were made to investigate (i) similarities in alterations with the cancer marker genes in biopsy samples and (ii) if alterations similar to that seen in biopsy samples are reflected in peripheral blood. Methods: Total RNA from eight soft gingival tissues and eight biopsy samples of HNSCC patients and total DNA and RNA from blood of healthy controls (n = 150) and HNSCC patients (n = 150) was processed for expression and genotyping studies. Blood from patients receiving chemo-radiotherapy was processed for follow-up study. Results: qRT-PCR revealed significant increase in mRNA expression of DMEs in biopsy and blood samples of HNSCC patients when compared to controls. Similar alterations were observed in cancer marker genes in these samples. Patients with variant genotypes of DMEs showed greater magnitude of alterations in mRNA expression when compared to wild type controls. Responders of chemo-radiotherapy showed significant decline in induction of mRNA expression of DMEs and cancer marker genes Conclusions: The data suggest that peripheral blood expression profiles could be used to monitor tobacco-induced HNSCC as well as the treatment response.
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Affiliation(s)
- Feza Hasan
- a Developmental Toxicology Laboratory, System Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR) , Lucknow , India.,b School of Dental Sciences, Department of Biochemistry, Babu Banarsi Das University , Lucknow , India
| | - Tridiv Katiyar
- a Developmental Toxicology Laboratory, System Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR) , Lucknow , India.,b School of Dental Sciences, Department of Biochemistry, Babu Banarsi Das University , Lucknow , India
| | - Shailendra S Maurya
- a Developmental Toxicology Laboratory, System Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR) , Lucknow , India
| | - Vinay Yadav
- a Developmental Toxicology Laboratory, System Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR) , Lucknow , India
| | - Sanjay Yadav
- a Developmental Toxicology Laboratory, System Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR) , Lucknow , India
| | - Rahul Pandey
- c Department of Radiotherapy & Department of Oral and Maxillofacial Surgery, King George's Medical University , Lucknow , India
| | - Divya Mehrotra
- c Department of Radiotherapy & Department of Oral and Maxillofacial Surgery, King George's Medical University , Lucknow , India
| | - Rahat Hadi
- d Department of Radiation Oncology, Dr. Ram Manohar Lohia Institute of Medical Sciences , Lucknow , India
| | - Sudhir Singh
- c Department of Radiotherapy & Department of Oral and Maxillofacial Surgery, King George's Medical University , Lucknow , India
| | - Madan L Bhatt
- c Department of Radiotherapy & Department of Oral and Maxillofacial Surgery, King George's Medical University , Lucknow , India
| | - Devendra Parmar
- a Developmental Toxicology Laboratory, System Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR) , Lucknow , India
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Hasan F, Yadav V, Katiyar T, Yadav S, Pandey R, Mehrotra D, Hadi R, Singh S, Bhatt MLB, Parmar D. Validation of gene expression profiles of candidate genes using low density array in peripheral blood of tobacco consuming head and neck cancer patients and auto/taxi drivers with preneoplastic lesions. Genomics 2019; 112:513-519. [PMID: 30951801 DOI: 10.1016/j.ygeno.2019.04.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 03/11/2019] [Accepted: 04/01/2019] [Indexed: 12/17/2022]
Abstract
TaqMan Low-Density Array (TLDA) based Real-Time PCR (RT-PCR) of selected genes showed increased expression of polycyclic aromatic hydrocarbons (PAHs) metabolizing cytochrome P450s (CYPs), glutathione S-transferases (GSTs) and associated transcription factors in biopsy and peripheral blood samples isolated from head and neck squamous cell carcinoma (HNSCC) patients when compared to the controls. The genes involved in DNA repair, signal transduction pathway, EMT pathway, apoptosis, and cell adhesion/motility were found to be altered in both peripheral blood and biopsy samples of HNSCC patients. Transcription profiles in blood isolated from auto/taxi drivers, with pre-neoplastic lesions and history of tobacco use, also showed similar alterations. The present TLDA data thus demonstrates that low-density array of selected genes in peripheral blood has the potential to be used as a surrogate for providing insight into cancer progression pathways and possibly as an early biomarker for monitoring tobacco induced HNSCC.
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Affiliation(s)
- Feza Hasan
- Developmental Toxicology Laboratory, System Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, U.P., India; Babu Banarsi Das University, Faizabad Road, Lucknow 226028, U.P., India
| | - Vinay Yadav
- Developmental Toxicology Laboratory, System Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, U.P., India
| | - Tridiv Katiyar
- Developmental Toxicology Laboratory, System Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, U.P., India; Babu Banarsi Das University, Faizabad Road, Lucknow 226028, U.P., India
| | - Sanjay Yadav
- Developmental Toxicology Laboratory, System Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, U.P., India
| | - Rahul Pandey
- Department of Radiotherapy, Department of Oral and Maxillofacial Surgery, King George's Medical University, Lucknow 226003, U.P., India
| | - Divya Mehrotra
- Department of Radiotherapy, Department of Oral and Maxillofacial Surgery, King George's Medical University, Lucknow 226003, U.P., India
| | - Rahat Hadi
- Department of Radiation Oncology, Dr. Ram Manohar Lohia Institute of Medical Sciences, Gomti Nagar, Lucknow 226010, U.P., India
| | - Sudhir Singh
- Department of Radiotherapy, Department of Oral and Maxillofacial Surgery, King George's Medical University, Lucknow 226003, U.P., India
| | - Madan L B Bhatt
- Department of Radiotherapy, Department of Oral and Maxillofacial Surgery, King George's Medical University, Lucknow 226003, U.P., India
| | - Devendra Parmar
- Developmental Toxicology Laboratory, System Toxicology & Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, U.P., India.
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Abstract
Eukaryotic membrane bound cytochrome P450s are expressed in bacterial systems to produce large yields of catalytically active protein for structure function studies. Recently, there have been several instances of expressing eukaryotic membrane bound CYPs in bacteria after making various modifications to both the N-terminus membrane binding domains of the protein and to noncontiguous F-G membrane binding loop that is also implicated in substrate binding. These modifications have been shown not to disturb the function of the protein of interest. The major factors that have been key to express the membrane bound cytochrome P450s in bacteria have been the following: (a) exon optimization (b) selection of the appropriate vector and host strain, and (c) growth and expression conditions with respect to temperature and speed of shaking the media flask. Herein, we describe methods to express and purify eukaryotic membrane bound cytochrome P450s. We also describe the measurement of the activity of the cytochrome P450 expressed by taking the example of cytochrome P450 2J2, the primary P450 expressed in the human heart and CYP725A4, the primary cytochrome P450 expressed in the first step of taxol synthesis. Additionally, we discuss the pros and cons of the different modifications done in order to express the membrane bound cytochrome P450s.
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Affiliation(s)
- Demetrios Maroutsos
- Department of Biochemistry, University of Illinois at Urbana Champaign, Urbana, IL, USA
| | - Hannah Huff
- Department of Chemistry, University of Illinois at Urbana-Champaign, Champaign, IL, USA
| | - Aditi Das
- Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
- Division of Nutritional Science, Neuroscience Program, Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
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Forman V, Bjerg-Jensen N, Dyekjær JD, Møller BL, Pateraki I. Engineering of CYP76AH15 can improve activity and specificity towards forskolin biosynthesis in yeast. Microb Cell Fact 2018; 17:181. [PMID: 30453976 PMCID: PMC6240942 DOI: 10.1186/s12934-018-1027-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 11/12/2018] [Indexed: 12/20/2022] Open
Abstract
Background Forskolin is a high-value diterpenoid produced exclusively by the Lamiaceae plant Coleus forskohlii. Today forskolin is used pharmaceutically for its adenyl-cyclase activating properties. The limited availability of pure forskolin is currently hindering its full utilization, thus a new environmentally friendly, scalable and sustainable strategy is needed for forskolin production. Recently, the entire biosynthetic pathway leading to forskolin was elucidated. The key steps of the pathway are catalyzed by cytochrome P450 enzymes (CYPs), which have been shown to be the limiting steps of the pathway. Here we study whether protein engineering of the substrate recognition sites (SRSs) of CYPs can improve their efficiency towards forskolin biosynthesis in yeast. Results As a proof of concept, we engineered the enzyme responsible for the first putative oxygenation step of the forskolin pathway: the conversion of 13R-manoyl oxide to 11-oxo-13R-manoyl oxide, catalyzed by the CYP76AH15. Four CYP76AH15 variants—engineered in the SRS regions—yielded at least a twofold increase of 11-oxo-13R-manoyl oxide when expressed in yeast cells grown in microtiter plates. The highest titers (5.6-fold increase) were observed with the variant A99I, mutated in the SRS1 region. Double or triple CYP76AH15 mutant variants resulted in additional enzymes with optimized performances. Moreover, in planta CYP76AH15 can synthesize ferruginol from miltiradiene. In this work, we showed that the mutants affecting 11-oxo-13R-manoyl oxide synthesis, do not affect ferruginol production, and vice versa. The best performing variant, A99I, was utilized to reconstruct the forskolin biosynthetic pathway in yeast cells. Although these strains showed increased 11-oxo-manoyl oxide production and higher accumulation of other pathway intermediates compared to the native CYP76AH15, lower production of forskolin was observed. Conclusions As demonstrated for CYP76AH15, site-directed mutagenesis of SRS regions of plant CYPs may be an efficient and targeted approach to increase the performance of these enzymes. Although in this work we have managed to achieve higher efficiency and specificity of the first CYP of the pathway, further work is necessary in order to increase the overall production of forskolin in yeast cells. Electronic supplementary material The online version of this article (10.1186/s12934-018-1027-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Victor Forman
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark.,Evolva A/S, Copenhagen, Denmark
| | | | | | - Birger Lindberg Møller
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark.,bioSYNergy, Center for Synthetic Biology, 1871, Frederiksberg C, Denmark.,VILLUM, Research Center for Plant Plasticity, 1871, Frederiksberg C, Denmark
| | - Irini Pateraki
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark. .,bioSYNergy, Center for Synthetic Biology, 1871, Frederiksberg C, Denmark.
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Bivona G, Agnello L, Ciaccio M. The immunological implication of the new vitamin D metabolism. Cent Eur J Immunol 2018; 43:331-4. [PMID: 30588177 DOI: 10.5114/ceji.2018.80053] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 06/07/2018] [Indexed: 12/16/2022] Open
Abstract
Vitamin D is a neuro-hormone regulating calcium-phosphate homeostasis, cell proliferation, and immunomodulation. Exogenous and endogenous vitamin D is inactive, and two hydroxylations are required to produce the active hormone. The first hydroxylation is unique to the liver, while the second step occurs in kidney, brain, lung, prostate, placenta, and immune cells. Kidney-derived calcitriol regulates calcium homeostasis. Active hormone produced by brain and immune cells mediates immune system response; lung calcitriol is involved in fighting respiratory tract infections; finally, prostate and placenta vitamin D regulates cells growth and proliferation within such tissues. Immune modulation by vitamin D includes enhancing innate immune response, attenuating and stimulating Th1 and Th2 cell proliferation, respectively, and promoting self-tolerance. Hypovitaminosis D is a common finding in several autoimmune diseases. It is unclear whether hypovitaminosis D could be a consequence or a cause of autoimmune diseases and whether vitamin D supplementation has an impact on these patients. Moreover, there is no consensus on oral cholecalciferol dosage for supplementation. More interventional studies are required to better define how vitamin D could represent both a causation agent in autoimmunity and a target for therapeutic strategies in autoimmune patients.
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Shuaichen L, Guangyi W. Bioinformatic analysis reveals CYP2C9 as a potential prognostic marker for HCC and liver cancer cell lines suitable for its mechanism study. Cell Mol Biol (Noisy-le-grand) 2018; 64:70-74. [PMID: 29974848] [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] [Received: 04/17/2018] [Revised: 05/18/2018] [Accepted: 05/20/2018] [Indexed: 06/08/2023]
Abstract
Hepatocellular carcinoma (HCC) is a common cancer and the sixth most lethal malignancy in the world. We chose gene expression profile of GSE14520 from GEO database aiming to find key genes that affect HCC progression. 22 paired tumor and non-tumor samples were included in this analysis. Differentially expressed genes (DEGs) between tumor and non-tumor were selected using GEO2R. Gene ontology (GO) enrichment and protein-protein interaction (PPI) of the DEGs were done using Metascape. There were 357 DEGs, including 70 up-regulated genes and 287 down-regulated genes. These DEGs were enriched in drug metabolic process, organic acid catabolic process, monocarboxylic metabolic process and etc. Three important modules were detected from PPI network using Molecular Complex Detection (MCODE) algorithm. Moreover, the Kaplan-Meier analysis for overall survival and disease-free survival were applied to those genes in top PPI group. In conclusion, this bioinformatic analysis demonstrated that DEGs, such as CYP2C9, might promote the development of HCC, especially in drug metabolism. It could also be used as a new biomarker for diagnosis.
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MESH Headings
- Algorithms
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/metabolism
- Carcinoma, Hepatocellular/mortality
- Cell Line, Tumor
- Cytochrome P-450 CYP2C9/genetics
- Cytochrome P-450 CYP2C9/metabolism
- Databases, Genetic
- Disease-Free Survival
- Down-Regulation
- Gene Expression Regulation, Neoplastic
- Gene Ontology
- Humans
- Kaplan-Meier Estimate
- Liver Neoplasms/genetics
- Liver Neoplasms/metabolism
- Liver Neoplasms/mortality
- Prognosis
- Protein Interaction Maps
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Transcriptome
- Up-Regulation
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Affiliation(s)
- Liu Shuaichen
- Department of Hepatobiliary & Pancreas Surgery, The First Hospital, Jilin University, Changchun, Jilin 130021, China
| | - Wang Guangyi
- Department of Hepatobiliary & Pancreas Surgery, The First Hospital, Jilin University, Changchun, Jilin 130021, China
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Hou C, Liu W, Liang Z, Han W, Li J, Ye L, Liu M, Cai Z, Zhao J, Chen Y, Liu S, Tang L. UGT-mediated metabolism plays a dominant role in the pharmacokinetic behavior and the disposition of morusin in vivo and in vitro. J Pharm Biomed Anal 2018; 154:339-53. [PMID: 29571132 DOI: 10.1016/j.jpba.2018.02.062] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 02/27/2018] [Accepted: 02/28/2018] [Indexed: 12/13/2022]
Abstract
Morusin is a prenylated flavone isolated from mulberry, the branch and root bark of various Morus species, which possesses diverse pharmacological activities. However, it lacks extensive studies about its absorption and disposition. This study investigated the pharmacokinetic behavior of morusin in rat, and its first-pass metabolism in situ. The metabolic pathway of morusin was further investigated by 12 human recombinant UDP-glucuronosyltransferases (UGTs), 9 CYP450s, as well as liver and intestinal microsomes. Four mono-glucuronide metabolites (M-5-G, M-4'-G, M-2'-G, and MII-2) were identified in rat intestine and bile by LC-MS/MS, while three of them were also detected in plasma (M-5-G, M-4'-G, and MII-2). M-4'-G was the principal conjugate. However, few CYP450 metabolites were found in rat intestine and bile. Only a small amount of MI-1 could be detected in rat plasma. UGT1A1, 1A3, 1A7, and 2B7 were the major contributors to morusin glucuronidation. Morusin exhibited substrate inhibition kinetic characteristics in all UGTs. Clearance rates of M-4'-G in HLM, RLM, UGT1A1, UGT1A3, and UGT2B7 were 137.02, 127.55, 32.54, 41.18, and 35.07 ml/min/mg, respectively. Besides, CYP3A5, 3A4, and 2C19 primarily contributed to the oxidative metabolism of morusin. The pharmacokinetic curves of morusin and its conjugates presented double peaks, showing that an enterohepatic recycling may exist. In conclusion, glucuronidation was confirmed to be the crucial metabolic pathway for morusin in vivo, and M-4'-G was the main metabolite.
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Zietek BM, Mladic M, Bruyneel B, Niessen WMA, Honing M, Somsen GW, Kool J. Nanofractionation Platform with Parallel Mass Spectrometry for Identification of CYP1A2 Inhibitors in Metabolic Mixtures. SLAS Discov 2017; 23:283-293. [PMID: 29262760 DOI: 10.1177/2472555217746323] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
With early assessment of inhibitory properties of drug candidates and their circulating metabolites toward cytochrome P450 enzymes, drug attrition, especially later in the drug development process, can be decreased. Here we describe the development and validation of an at-line nanofractionation platform, which was applied for screening of CYP1A2 inhibitors in Phase I metabolic mixtures. With this platform, a metabolic mixture is separated by liquid chromatography (LC), followed by parallel nanofractionation on a microtiter well plate and mass spectrometry (MS) analysis. After solvent evaporation, all metabolites present in the nanofractionated mixture are assayed utilizing a fluorescence CYP1A2 inhibition bioassay performed on the plate. Next, a bioactivity chromatogram is constructed from the bioassay results. By peak shape and retention time correlation of the bioactivity peaks with the obtained MS data, CYP1A2-bioactive inhibiting metabolites can be identified. The method correctly evaluated the potency of five CYP1A2 inhibitors. Mixtures comprising potent inhibitors of CYP1A2 or in vitro-generated metabolites of ellipticine were evaluated for their inhibitory bioactivities. In both cases, good LC separation of all compounds was achieved and bioactivity data could be accurately correlated with the parallel recorded MS data. Generation and evaluation of Phase II metabolites of hydroxylated ellipticine was also pursued.
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Affiliation(s)
- Barbara M Zietek
- 1 Division of BioAnalytical Chemistry, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Marija Mladic
- 1 Division of BioAnalytical Chemistry, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Ben Bruyneel
- 1 Division of BioAnalytical Chemistry, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Wilfried M A Niessen
- 1 Division of BioAnalytical Chemistry, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,3 hyphen MassSpec, Voorhout, Netherlands
| | - Maarten Honing
- 1 Division of BioAnalytical Chemistry, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.,2 DSM Materials Science Center, Geleen, Netherlands
| | - Govert W Somsen
- 1 Division of BioAnalytical Chemistry, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Jeroen Kool
- 1 Division of BioAnalytical Chemistry, Vrije Universiteit Amsterdam, Amsterdam, Netherlands
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Abstract
1α,25-Dihydroxvitamin D3 (1,25(OH)2D3) is the hormonally active form of vitamin D3. Its synthesis and its metabolites, their transport and elimination as well as action on transcriptional regulation involves the harmonic cooperation of diverse proteins with vitamin D binding capacities such as vitamin D binding protein (DBP), cytochrome P450 enzymes or the nuclear vitamin receptor (VDR). The genomic mechanism of 1,25(OH)2D3 action involves its binding to VDR that functionally acts as a heterodimer with retinoid X receptor. The crystal structures of the most important proteins for vitamin D3, VDR, DBP, CYP2R1 and CYP24A1, have provided identification of mechanisms of actions of these proteins and those mediating VDR-regulated transcription. This review will present the structural information on recognition of the vitamin D3 and metabolites by CYP proteins and DBP as well as the structural basis of VDR activation by 1,25(OH)2D3 and metabolites. Additionally, we will describe, the implications of the VDR mutants associated with hereditary vitamin D-resistant rickets (HVDRR) that display impaired function.
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Affiliation(s)
- Natacha Rochel
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Institut National de La Santé et de La Recherche Médicale (INSERM), U964/Centre National de Recherche Scientifique (CNRS), UMR7104/Université de Strasbourg, 67404 Illkirch, France.
| | - Ferdinand Molnár
- Institute of Biopharmacy, School of Pharmacy, Faculty of Heath Science, University of Eastern Finland, Yliopistonranta 1C, Canthia 2036, 70210 Kuopio, Finland.
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43
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Cao L, Kwara A, Greenblatt DJ. Metabolic interactions between acetaminophen (paracetamol) and two flavonoids, luteolin and quercetin, through in-vitro inhibition studies. J Pharm Pharmacol 2017; 69:1762-1772. [PMID: 28872689 DOI: 10.1111/jphp.12812] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 07/26/2017] [Indexed: 12/27/2022]
Abstract
OBJECTIVES Excessive exposure to acetaminophen (APAP, paracetamol) can cause liver injury through formation of a reactive metabolite that depletes hepatic glutathione and causes hepatocellular oxidative stress and damage. Generation of this metabolite is mediated by Cytochrome-P450 (CYP) isoforms, mainly CYP2E1. A number of naturally occurring flavonoids can mitigate APAP-induced hepatotoxicity in experimental animal models. Our objective was to determine the mechanism of these protective effects and to evaluate possible human applicability. METHODS Two flavonoids, luteolin and quercetin, were evaluated as potential inhibitors of eight human CYP isoforms, of six UDP-glucuronosyltransferase (UGT) isoforms and of APAP glucuronidation and sulfation. The experimental model was based on in-vitro metabolism by human liver microsomes, using isoform-specific substrates. KEY FINDINGS Luteolin and quercetin inhibited human CYP isoforms to varying degrees, with greatest potency towards CYP1A2 and CYP2C8. However, 50% inhibitory concentrations (IC50 values) were generally in the micromolar range. UGT isoforms were minimally inhibited. Both luteolin and quercetin inhibited APAP sulfation but not glucuronidation. CONCLUSIONS Inhibition of human CYP activity by luteolin and quercetin occurred with IC50 values exceeding customary in-vivo human exposure with tolerable supplemental doses of these compounds. The findings indicate that luteolin and quercetin are not likely to be of clinical value for preventing or treating APAP-induced hepatotoxicity.
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Affiliation(s)
- Lei Cao
- Graduate Program in Pharmacology and Experimental Therapeutics, Sackler School of Graduate Biomedical Sciences, Tufts University, Boston, MA, USA
| | - Awewura Kwara
- Department of Medicine, University of Florida College of Medicine, Gainesville, FL, USA
| | - David J Greenblatt
- Graduate Program in Pharmacology and Experimental Therapeutics, Sackler School of Graduate Biomedical Sciences, Tufts University, Boston, MA, USA.,Department of Integrative Physiology and Pathobiology, Tufts University School of Medicine, Boston, MA, USA
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44
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Uppugunduri CRS, Storelli F, Mlakar V, Huezo-Diaz Curtis P, Rezgui A, Théorêt Y, Marino D, Doffey-Lazeyras F, Chalandon Y, Bader P, Daali Y, Bittencourt H, Krajinovic M, Ansari M. The Association of Combined GSTM1 and CYP2C9 Genotype Status with the Occurrence of Hemorrhagic Cystitis in Pediatric Patients Receiving Myeloablative Conditioning Regimen Prior to Allogeneic Hematopoietic Stem Cell Transplantation. Front Pharmacol 2017; 8:451. [PMID: 28744217 PMCID: PMC5504863 DOI: 10.3389/fphar.2017.00451] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 06/22/2017] [Indexed: 12/01/2022] Open
Abstract
Hemorrhagic cystitis (HC) is one of the complications of busulfan-cyclophosphamide (BU-CY) conditioning regimen during allogeneic hematopoietic stem cell transplantation (HSCT) in children. Identifying children at high risk of developing HC in a HSCT setting could facilitate the evaluation and implementation of effective prophylactic measures. In this retrospective analysis genotyping of selected candidate gene variants was performed in 72 children and plasma Sulfolane (Su, water soluble metabolite of BU) levels were measured in 39 children following treatment with BU-CY regimen. The cytotoxic effects of Su and acrolein (Ac, water soluble metabolite of CY) were tested on human urothelial cells (HUCs). The effect of Su was also tested on cytochrome P 450 (CYP) function in HepaRG hepatic cells. Cumulative incidences of HC before day 30 post HSCT were estimated using Kaplan–Meier curves and log-rank test was used to compare the difference between groups in a univariate analysis. Multivariate Cox regression was used to estimate hazard ratios with 95% confidence intervals (CIs). Multivariate analysis included co-variables that were significantly associated with HC in a univariate analysis. Cumulative incidence of HC was 15.3%. In the univariate analysis, HC incidence was significantly (p < 0.05) higher in children older than 10 years (28.6 vs. 6.8%) or in children with higher Su levels (>40 vs. <11%) or in carriers of both functional GSTM1 and CYP2C9 (33.3 vs. 6.3%) compared to the other group. In a multivariate analysis, combined GSTM1 and CYP2C9 genotype status was associated with HC occurrence with a hazards ratio of 4.8 (95% CI: 1.3–18.4; p = 0.02). Ac was found to be toxic to HUC cells at lower concentrations (33 μM), Su was not toxic to HUC cells at concentrations below 1 mM and did not affect CYP function in HepaRG cells. Our observations suggest that pre-emptive genotyping of CYP2C9 and GSTM1 may aid in selection of more effective prophylaxis to reduce HC development in pediatric patients undergoing allogeneic HSCT. Article summary: (1) Children carrying functional alleles in GSTM1 and CYP2C9 are at high risk for developing hemorrhagic cystitis following treatment with busulfan and cyclophosphamide based conditioning regimen. (2) Identification of children at high risk for developing hemorrhagic cystitis in an allogeneic HSCT setting will enable us to evaluate and implement optimal strategies for its prevention. Trial registration: This study is a part of the trail “clinicaltrials.gov identifier: NCT01257854.”
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Affiliation(s)
- Chakradhara Rao S Uppugunduri
- Onco-Hematology Unit, Geneva University Hospital, Department of PediatricsGeneva, Switzerland.,CANSEARCH Research Laboratory, Department of Pediatrics, Faculty of Medicine, University of GenevaGeneva, Switzerland
| | - Flavia Storelli
- Clinical Pharmacology and Toxicology Service, Geneva University HospitalGeneva, Switzerland
| | - Vid Mlakar
- Onco-Hematology Unit, Geneva University Hospital, Department of PediatricsGeneva, Switzerland.,CANSEARCH Research Laboratory, Department of Pediatrics, Faculty of Medicine, University of GenevaGeneva, Switzerland
| | - Patricia Huezo-Diaz Curtis
- Onco-Hematology Unit, Geneva University Hospital, Department of PediatricsGeneva, Switzerland.,CANSEARCH Research Laboratory, Department of Pediatrics, Faculty of Medicine, University of GenevaGeneva, Switzerland
| | - Aziz Rezgui
- CHU Sainte-Justine Research Center, Charles-Bruneau Cancer Center, MontrealQC, Canada
| | - Yves Théorêt
- Clinical Pharmacology Unit, CHU Sainte-Justine, MontrealQC, Canada
| | - Denis Marino
- CANSEARCH Research Laboratory, Department of Pediatrics, Faculty of Medicine, University of GenevaGeneva, Switzerland
| | | | - Yves Chalandon
- Division of Hematology, Department of Medical Specialties, Geneva University HospitalGeneva, Switzerland
| | - Peter Bader
- Division for Stem Cell Transplantation and Immunology, University Hospital FrankfurtFrankfurt, Germany
| | - Youssef Daali
- Clinical Pharmacology and Toxicology Service, Geneva University HospitalGeneva, Switzerland
| | - Henrique Bittencourt
- Department of Pediatrics, Charles-Bruneau Cancer Center, CHU Sainte-Justine Research Center, MontrealQC, Canada
| | - Maja Krajinovic
- CHU Sainte-Justine Research Center, Charles-Bruneau Cancer Center, MontrealQC, Canada.,Clinical Pharmacology Unit, CHU Sainte-Justine, MontrealQC, Canada.,Department of Pediatrics, Charles-Bruneau Cancer Center, CHU Sainte-Justine Research Center, MontrealQC, Canada
| | - Marc Ansari
- Onco-Hematology Unit, Geneva University Hospital, Department of PediatricsGeneva, Switzerland.,CANSEARCH Research Laboratory, Department of Pediatrics, Faculty of Medicine, University of GenevaGeneva, Switzerland
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45
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Hu N, Huang Y, Gao X, Li S, Yan Z, Wei B, Yan R. Effects of dextran sulfate sodium induced experimental colitis on cytochrome P450 activities in rat liver, kidney and intestine. Chem Biol Interact 2017; 271:48-58. [PMID: 28438436 DOI: 10.1016/j.cbi.2017.04.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Revised: 03/28/2017] [Accepted: 04/20/2017] [Indexed: 11/29/2022]
Abstract
Dextran sulfate sodium (DSS) induced experimental colitis presents a histologic resemblance to human ulcerative colitis (UC). Altered cytochrome P450s (CYPs) have been reported in this model and patients with UC. In this study, six CYPs activities were quantitatively determined in microsomes of liver (RLMs), kidney (RRMs) and intestine (RIMs) from rats with colitis at acute (5% DSS for 7 days, UCA) and remission (7-day DSS treatment followed by 7-day cessation, UCR) phases and compared with normal rats. Generally, CYPs activities varied with isoform, organ, and disease status. Hepatic CYP1A2, 2B1, 2C6/11, 2E1 and 3A1/2 activities were reduced by acute colitis and completely or partially restored after DSS was halted. Although DSS treatment decreased the Vmax of renal CYP2C6/11 and increased that of CYP2D2, their CLint, in vitro were comparable among normal, acute and remission stages. DSS treatment changed the kinetics of CYP3A1/2-mediated nifedipine metabolism in RRMs from biphasic to classical kinetics. Notably, CYP2D2 activity was elevated in liver and kidney in acute UC, while enhanced in liver and decreased in kidney in remission. In intestine, CYP3A1/2 activity was increased in UCA and further enhanced after DSS withdrawal. These findings highlight the necessity of quantifying enzyme activity for precision drug therapy.
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Affiliation(s)
- Nan Hu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China; Department of Pharmacy, The First People's Hospital of Changzhou, Changzhou, Jiang Su, China
| | - Yanjuan Huang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Xuejiao Gao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Sai Li
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Zhixiang Yan
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Bin Wei
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Ru Yan
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China; UM Zhuhai Research Institute, No.1 Software Road, Zhuhai Hi-tech Zone, Guangdong, China.
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46
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Abstract
After the introduction of highly active antiretroviral therapy in the 1990s, the perception of the diagnosis of HIV infection gradually shifted from a 'death sentence' to a chronic disease requiring long-term treatment. The host genetic variability has been shown to play a relevant role in both antiretroviral drugs bioavailability and adverse effects susceptibility. Knowledge about pharmacogenetics role in HIV infection treatment has largely increased over the last years, and is reviewed in the present report, as well as future perspectives for the inclusion of pharmacogenetics information in the directing of HIV infection treatment.
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Affiliation(s)
- Vanessa S Mattevi
- Graduate Program in Biosciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, RS, Brazil
| | - Carmela Fs Tagliari
- Graduate Program in Biosciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, RS, Brazil
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47
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Wagmann L, Meyer MR, Maurer HH. What is the contribution of human FMO3 in the N-oxygenation of selected therapeutic drugs and drugs of abuse? Toxicol Lett 2016; 258:55-70. [PMID: 27320963 DOI: 10.1016/j.toxlet.2016.06.013] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 06/12/2016] [Accepted: 06/13/2016] [Indexed: 10/21/2022]
Abstract
Little is known about the role of flavin-containing monooxygenases (FMOs) in the metabolism of xenobiotics. FMO3 is the isoform in adult human liver with the highest impact on drug metabolism. The aim of the presented study was to elucidate the contribution of human FMO3 to the N-oxygenation of selected therapeutic drugs and drugs of abuse (DOAs). Its contribution to the in vivo hepatic net clearance of the N-oxygenation products was calculated by application of an extended relative activity factor (RAF) approach to differentiate from contribution of cytochrome P450 (CYP) isoforms. FMO3 and CYP substrates were identified using pooled human liver microsomes after heat inactivation and chemical inhibition, or single enzyme incubations. Kinetic parameters were subsequently determined using recombinant human enzymes and mass spectrometric analysis via authentic reference standards or simple peak areas of the products divided by those of the internal standard. FMO3 was identified as enzyme mainly responsible for the formation of N,N-diallyltryptamine N-oxide and methamphetamine hydroxylamine (>80% contribution for both). A contribution of 50 and 30% was calculated for the formation of N,N-dimethyltryptamine N-oxide and methoxypiperamide N-oxide, respectively. However, FMO3 contributed with less than 5% to the formation of 3-bromomethcathinone hydroxylamine, amitriptyline N-oxide, and clozapine N-oxide. There was no significant difference in the contributions when using calibrations with reference metabolite standards or peak area ratio calculations. The successful application of a modified RAF approach including FMO3 proved the importance of FMO3 in the N-oxygenation of DOAs in human metabolism.
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Affiliation(s)
- Lea Wagmann
- Department of Experimental and Clinical Toxicology, Saarland University, Homburg, Germany
| | - Markus R Meyer
- Department of Experimental and Clinical Toxicology, Saarland University, Homburg, Germany; Department of Clinical Pharmacology and Pharmacoepidemiology, Heidelberg University Hospital, Heidelberg, Germany
| | - Hans H Maurer
- Department of Experimental and Clinical Toxicology, Saarland University, Homburg, Germany.
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48
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Abstract
The practical pharmacogenetics of Alzheimer's disease (AD) is circumscribed to acetylcholinesterase inhibitors (AChEIs) and memantine. However, pharmacogenetic procedures should be applied to novel strategies in AD therapeutics including: novel AChEIs and neurotransmitter regulators, anti-Aβ treatments, anti-tau treatments, pleiotropic products, epigenetic drugs and combination therapies. Genes involved in the pharmacogenetic network are under the influence of the epigenetic machinery which regulates gene expression transcriptionally and post-transcriptionally, configuring the fundamentals of pharmacoepigenomics. Over 60% of AD patients present concomitant pathologies demanding additional treatments which increase the likelihood of drug-drug interactions. Lipid metabolism dysfunction is a pathogenic mechanism inherent to AD neurodegeneration. The therapeutic response to hypolipidemic compounds is influenced by the APOE and CYP genotypes. The development of novel compounds and the use of combination/multifactorial treatments require the implantation of pharmacogenomic procedures for the avoidance of ADRs and the optimization of therapeutics.
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Affiliation(s)
- Ramón Cacabelos
- Department of Genomic Medicine, Camilo José Cela University, Madrid, Spain.,EuroEspes Biomedical Research Center, Institute of Medical Science and Genomic Medicine, Corunna, Spain
| | - Clara Torrellas
- EuroEspes Biomedical Research Center, Institute of Medical Science and Genomic Medicine, Corunna, Spain
| | - Oscar Teijido
- EuroEspes Biomedical Research Center, Institute of Medical Science and Genomic Medicine, Corunna, Spain
| | - Juan Carlos Carril
- EuroEspes Biomedical Research Center, Institute of Medical Science and Genomic Medicine, Corunna, Spain
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49
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Weiss J, Gajek T, Köhler BC, Haefeli WE. Venetoclax (ABT-199) Might Act as a Perpetrator in Pharmacokinetic Drug-Drug Interactions. Pharmaceutics 2016; 8:E5. [PMID: 26927160 PMCID: PMC4810081 DOI: 10.3390/pharmaceutics8010005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 02/16/2016] [Indexed: 01/15/2023] Open
Abstract
Venetoclax (ABT-199) represents a specific B-cell lymphoma 2 (Bcl-2) inhibitor that is currently under development for the treatment of lymphoid malignancies. So far, there is no published information on its interaction potential with important drug metabolizing enzymes and drug transporters, or its efficacy in multidrug resistant (MDR) cells. We therefore scrutinized its drug-drug interaction potential in vitro. Inhibition of cytochrome P450 enzymes (CYPs) was quantified by commercial kits. Inhibition of drug transporters (P-glycoprotein (P-gp, ABCB1), breast cancer resistance protein (BCRP), and organic anion transporting polypeptides (OATPs)) was evaluated by the use of fluorescent probe substrates. Induction of drug transporters and drug metabolizing enzymes was quantified by real-time RT-PCR. The efficacy of venetoclax in MDR cells lines was evaluated with proliferation assays. Venetoclax moderately inhibited P-gp, BCRP, OATP1B1, OATP1B3, CYP3A4, and CYP2C19, whereas CYP2B6 activity was increased. Venetoclax induced the mRNA expression of CYP1A1, CYP1A2, UGT1A3, and UGT1A9. In contrast, expression of ABCB1 was suppressed, which might revert tumor resistance towards antineoplastic P-gp substrates. P-gp over-expression led to reduced antiproliferative effects of venetoclax. Effective concentrations for inhibition and induction lay in the range of maximum plasma concentrations of venetoclax, indicating that it might act as a perpetrator drug in pharmacokinetic drug-drug interactions.
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Affiliation(s)
- Johanna Weiss
- Department of Clinical Pharmacology and Pharmacoepidemiology, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany.
| | - Thomas Gajek
- Department of Clinical Pharmacology and Pharmacoepidemiology, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany.
| | - Bruno Christian Köhler
- National Centre for Tumour Diseases, Department of Medical Oncology, Internal Medicine VI, University of Heidelberg, Im Neuenheimer Feld 460, 69120 Heidelberg, Germany.
| | - Walter Emil Haefeli
- Department of Clinical Pharmacology and Pharmacoepidemiology, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany.
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50
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Schiwy S, Bräunig J, Alert H, Hollert H, Keiter SH. A novel contact assay for testing aryl hydrocarbon receptor (AhR)-mediated toxicity of chemicals and whole sediments in zebrafish (Danio rerio) embryos. Environ Sci Pollut Res Int 2015; 22:16305-16318. [PMID: 24958532 DOI: 10.1007/s11356-014-3185-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [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: 02/24/2014] [Accepted: 06/09/2014] [Indexed: 06/03/2023]
Abstract
The European Water Framework Directive aims to achieve a good ecological and chemical status in surface waters until 2015. Sediment toxicology plays a major role in this intention as sediments can act as a secondary source of pollution. In order to fulfill this legal obligation, there is an urgent need to develop whole-sediment exposure protocols, since sediment contact assays represent the most realistic scenario to simulate in situ exposure conditions. Therefore, in the present study, a vertebrate sediment contact assay to determine aryl hydrocarbon receptor (AhR)-mediated activity of particle-bound pollutants was developed. Furthermore, the activity and the expression of the CYP1 family in early life stages of zebrafish after exposure to freeze-dried sediment samples were investigated. In order to validate the developed protocol, effects of β-naphthoflavone and three selected sediment on zebrafish embryos were investigated. Results documented clearly AhR-mediated toxicity after exposure to β-naphthoflavone (β-NF) and to the sediment from the Vering canal. Upregulation of mRNA levels was observed for all investigated sediment samples. The highest levels of all investigated cyp genes (cyp1a, cyp1b1, cyp1c1, and cyp1c2) were recorded after exposure to the sediment sample of the Vering canal. In conclusion, the newly developed sediment contact assay can be recommended for the investigation of dioxin-like activities of single substances and the bioavailable fraction of complex environmental samples. Moreover, the exposure of whole zebrafish embryos to native (freeze-dried) sediment samples represents a highly realistic and ecologically relevant exposure scenario.
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Affiliation(s)
- Sabrina Schiwy
- Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, Worringerweg 1, 52074, Aachen, Germany
| | - Jennifer Bräunig
- Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, Worringerweg 1, 52074, Aachen, Germany
| | - Henriette Alert
- Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, Worringerweg 1, 52074, Aachen, Germany
| | - Henner Hollert
- Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, Worringerweg 1, 52074, Aachen, Germany.
| | - Steffen H Keiter
- Department of Ecosystem Analysis, Institute for Environmental Research, RWTH Aachen University, Worringerweg 1, 52074, Aachen, Germany.
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