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Kowal-Chwast A, Gabor-Worwa E, Gaud N, Gogola D, Piątek A, Zarębski A, Littlewood P, Smoluch M, Brzózka K, Kuś K. Novel method of measurement of in vitro drug uptake in OATP1B3 overexpressing cells in the presence of dextran. Pharmacol Rep 2024; 76:400-415. [PMID: 38530582 DOI: 10.1007/s43440-024-00583-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/01/2024] [Accepted: 03/03/2024] [Indexed: 03/28/2024]
Abstract
BACKGROUND In predictions about hepatic clearance (CLH), a number of studies explored the role of albumin and transporters in drug uptake by liver cells, challenging the traditional free-drug theory. It was proposed that liver uptake can occur for transporter substrate compounds not only from the drug's unbound form but also directly from the drug-albumin complex, a phenomenon known as uptake facilitated by albumin. In contrast to albumin, dextran does not exhibit binding properties for compounds. However, as a result of its inherent capacity for stabilization, it is widely used to mimic conditions within cells. METHODS The uptake of eight known substrates of the organic anion-transporting polypeptide 1B3 (OATP1B3) was assessed using a human embryonic kidney cell line (HEK293), which stably overexpresses this transporter. An inert polymer, dextran, was used to simulate cellular conditions, and the results were compared with experiments involving human plasma and human serum albumin (HSA). RESULTS This study is the first to demonstrate that dextran increases compound uptake in cells with overexpression of the OATP1B3 transporter. Contrary to the common theory that highly protein-bound ligands interact with hepatocytes to increase drug uptake, the results indicate that dextran's interaction with test compounds does not significantly increase concentrations near the cell membrane surface. CONCLUSIONS We evaluated the effect of dextran on the uptake of known substrates using OATP1B3 overexpressed in the HEK293 cell line, and we suggest that its impact on drug concentrations in liver cells may differ from the traditional role of plasma proteins and albumin.
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Affiliation(s)
- Anna Kowal-Chwast
- Ryvu Therapeutics S.A., Leona Henryka Sternbacha 2, 30-394, Kraków, Poland.
- Department of Analytical Chemistry and Biochemistry, Faculty of Materials Science and Ceramics, AGH University of Krakow, Al. Mickiewicza 30, 30-059, Kraków, Poland.
| | - Ewelina Gabor-Worwa
- Ryvu Therapeutics S.A., Leona Henryka Sternbacha 2, 30-394, Kraków, Poland
- Department of Analytical Chemistry and Biochemistry, Faculty of Materials Science and Ceramics, AGH University of Krakow, Al. Mickiewicza 30, 30-059, Kraków, Poland
| | - Nilesh Gaud
- Ryvu Therapeutics S.A., Leona Henryka Sternbacha 2, 30-394, Kraków, Poland
| | - Dawid Gogola
- Ryvu Therapeutics S.A., Leona Henryka Sternbacha 2, 30-394, Kraków, Poland
| | - Agnieszka Piątek
- Ryvu Therapeutics S.A., Leona Henryka Sternbacha 2, 30-394, Kraków, Poland
| | - Adrian Zarębski
- Ryvu Therapeutics S.A., Leona Henryka Sternbacha 2, 30-394, Kraków, Poland
| | - Peter Littlewood
- Ryvu Therapeutics S.A., Leona Henryka Sternbacha 2, 30-394, Kraków, Poland
| | - Marek Smoluch
- Department of Analytical Chemistry and Biochemistry, Faculty of Materials Science and Ceramics, AGH University of Krakow, Al. Mickiewicza 30, 30-059, Kraków, Poland
| | - Krzysztof Brzózka
- Ryvu Therapeutics S.A., Leona Henryka Sternbacha 2, 30-394, Kraków, Poland
| | - Kamil Kuś
- Ryvu Therapeutics S.A., Leona Henryka Sternbacha 2, 30-394, Kraków, Poland
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Rajanala SH, Plym A, Vaselkiv JB, Ebot EM, Matsoukas K, Lin Z, Chakraborty G, Markt SC, Penney KL, Lee GSM, Mucci LA, Kantoff PW, Stopsack KH. SLCO1B3 and SLCO2B1 genotypes, androgen deprivation therapy, and prostate cancer outcomes: a prospective cohort study and meta-analysis. Carcinogenesis 2024; 45:35-44. [PMID: 37856781 PMCID: PMC10859730 DOI: 10.1093/carcin/bgad075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 10/09/2023] [Accepted: 10/18/2023] [Indexed: 10/21/2023] Open
Abstract
Solute carrier organic anion (SLCO) transporters (OATP transporters) are involved in cellular uptake of drugs and hormones. Germline variants in SLCO1B3 and SLCO2B1 have been implicated in prostate cancer progression and therapy response, including to androgen deprivation and statin medications, but results have appeared heterogeneous. We conducted a cohort study of five single-nucleotide polymorphisms (SNPs) in SLCO1B3 and SLCO2B1 with prior evidence among 3208 men with prostate cancer who participated in the Health Professionals Follow-up Study or the Physicians' Health Study, following participants prospectively after diagnosis over 32 years (median, 14 years) for development of metastases and cancer-specific death (lethal disease, 382 events). Results were suggestive of, but not conclusive for, associations between some SNPs and lethal disease and differences by androgen deprivation and statin use. All candidate SNPs were associated with SLCO mRNA expression in tumor-adjacent prostate tissue. We also conducted a systematic review and harmonized estimates for a dose-response meta-analysis of all available data, including 9 further studies, for a total of 5598 patients and 1473 clinical events. The A allele of the exonic SNP rs12422149 (14% prevalence), which leads to lower cellular testosterone precursor uptake via SLCO2B1, was associated with lower rates of prostate cancer progression (hazard ratio per A allele, 0.80; 95% confidence interval, 0.69-0.93), with little heterogeneity between studies (I2, 0.27). Collectively, the totality of evidence suggests a strong association between inherited genetic variation in SLCO2B1 and prostate cancer prognosis, with potential clinical use in risk stratification related to androgen deprivation therapy.
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Affiliation(s)
- Sai Harisha Rajanala
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Anna Plym
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
- Department of Urology, Brigham and Women’s Hospital, Boston, MA, USA
| | - Jane B Vaselkiv
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Ericka M Ebot
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Konstantina Matsoukas
- Technology Division, Library Services, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Zhike Lin
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Goutam Chakraborty
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Urology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Sarah C Markt
- Department of Population and Quantitative Health Sciences, School of Medicine, Case Western Reserve University, Cleveland, OH, USA
| | - Kathryn L Penney
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Gwo-Shu M Lee
- Lank Center for Genitourinary Oncology, Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Lorelei A Mucci
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Philip W Kantoff
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Convergent Therapeutics Inc., Boston, MA, USA
| | - Konrad H Stopsack
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
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3
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Fan J, He HY, Li HH, Wu PL, Tang L, Deng BY, Dong WH, Wang JH. Associations between UGT1A1, SLCO1B1, SLCO1B3, BLVRA and HMOX1 polymorphisms and susceptibility to neonatal severe hyperbilirubinemia in Chinese Han population. BMC Pediatr 2024; 24:82. [PMID: 38279097 PMCID: PMC10811893 DOI: 10.1186/s12887-024-04537-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 01/04/2024] [Indexed: 01/28/2024] Open
Abstract
BACKGROUND Severe neonatal hyperbilirubinemia could lead to kernicterus and neonatal death. This study aimed to analyze the association between single nucleotide polymorphisms in genes involved in bilirubin metabolism and the incidence of severe hyperbilirubinemia. METHODS A total of 144 neonates with severe hyperbilirubinemia and 50 neonates without or mild hyperbilirubinemia were enrolled in 3 institutions between 2019 and 2020. Twelve polymorphisms of 5 genes (UGT1A1, SLCO1B1, SLCO1B3, BLVRA, and HMOX1) were analyzed by PCR amplification of genomic DNA. Genotyping was performed using an improved multiplex ligation detection reaction technique based on ligase detection reaction. RESULTS The frequencies of the A allele in UGT1A1-rs4148323 and the C allele in SLCO1B3-rs2417940 in the severe hyperbilirubinemia group (30.2% and 90.6%, respectively) were significantly higher than those in the controls (30.2% vs.13.0%, 90.6% vs. 78.0%, respectively, both p < 0.05). Haplotype analysis showed the ACG haplotype of UGT1A1 were associated with an increased hyperbilirubinemia risk (OR 3.122, p = 0.001), whereas the GCG haplotype was related to a reduced risk (OR 0.523, p = 0.018). CONCLUSION The frequencies of the A allele in rs4148323 and the C allele in rs2417940 are highly associated with the incidence of severe hyperbilirubinemia in Chinese Han neonates. TRIAL REGISTRATION Trial registration number:ChiCTR1800020424; Date of registration:2018-12-29.
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Affiliation(s)
- Juan Fan
- Department of Neonatology , Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Rare Diseases in Infection and Immunity, Chongqing, China
| | - Hua-Yun He
- Department of Neonatology , Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Rare Diseases in Infection and Immunity, Chongqing, China
| | - Huan-Huan Li
- Department of Neonatology, Chongqing Jiulongpo People's Hospital, Chongqing, China
| | - Pi-Liu Wu
- Department of Neonatology, Bishan Maternity & Child Hospital of Chongqing, Chongqing, China
| | - Lei Tang
- Department of Pediatrics, Affiliated Banan Hospital of Chongqing Medical University, Chongqing, China
| | - Bo-Yin Deng
- Department of Neonatology , Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Rare Diseases in Infection and Immunity, Chongqing, China
| | - Wen-Hui Dong
- Department of Neonatology , Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Rare Diseases in Infection and Immunity, Chongqing, China.
| | - Jian-Hui Wang
- Department of Neonatology , Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Child Rare Diseases in Infection and Immunity, Chongqing, China
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Wang Z, Li Y, Villanueva CE, Peng T, Han W, Bo Z, Zhang H, Hagenbuch B, Gui C. The Importance of Val386 in Transmembrane Domain 8 for the Activation of OATP1B3 by Epigallocatechin Gallate. J Agric Food Chem 2022; 70:6552-6560. [PMID: 35603894 PMCID: PMC9438777 DOI: 10.1021/acs.jafc.2c02692] [Citation(s) in RCA: 2] [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] [Indexed: 06/03/2023]
Abstract
Estrone-3-sulfate (E3S) uptake mediated by organic anion transporting polypeptide 1B3 (OATP1B3) can be activated by epigallocatechin gallate (EGCG). In this study, by using chimeric transporters and site-directed mutagenesis, we found that Val386 in transmembrane domain 8 (TM8) is essential for OATP1B3's activation by EGCG. Kinetic studies showed that the loss of activation of 1B3-TM8 and 1B3-V386F in the presence of EGCG is due to their decreased substrate binding affinity and reduced maximal transport rate. The overall transport efficiencies of OATP1B3, 1B3-TM8, and 1B3-V386F in the absence and presence of EGCG are 8.6 ± 0.7 vs 15.9 ± 1.4 (p < 0.05), 11.2 ± 2.1 vs 2.7 ± 0.3 (p < 0.05), and 10.2 ± 1.0 vs 2.5 ± 0.3 (p < 0.05), respectively. While 1B3-V386F cannot be activated by EGCG, its transport activity for EGCG is also diminished. OATP1B3's activation by EGCG is substrate-dependent as EGCG inhibits OATP1B3-mediated pravastatin uptake. Furthermore, the activation of OATP1B3-mediated E3S uptake by quercetin 3-O-α-l-arabinopyranosyl(1 → 2)-α-l-rhamnopyranoside is not affected by TM8 and V386F. Taken together, the activation of OATP1B3 by small molecules is substrate- and modulator-dependent, and V386 in TM8 plays a critical role in the activation of OATP1B3-mediated E3S uptake by EGCG.
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Affiliation(s)
- Zhongmin Wang
- College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, People’s Republic of China
| | - Ying Li
- College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, People’s Republic of China
| | - Cecilia E. Villanueva
- Department of Pharmacology, Toxicology and Therapeutics, the University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, Kansas 66160, United States
| | - Taotao Peng
- College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, People’s Republic of China
| | - Wanjun Han
- College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, People’s Republic of China
| | - Zheyue Bo
- College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, People’s Republic of China
| | - Hongjian Zhang
- College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, People’s Republic of China
| | - Bruno Hagenbuch
- Department of Pharmacology, Toxicology and Therapeutics, the University of Kansas Medical Center, 3901 Rainbow Boulevard, Kansas City, Kansas 66160, United States
| | - Chunshan Gui
- College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, People’s Republic of China
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Barbier RH, McCrea EM, Lee KY, Strope JD, Risdon EN, Price DK, Chau CH, Figg WD. Abiraterone induces SLCO1B3 expression in prostate cancer via microRNA-579-3p. Sci Rep 2021; 11:10765. [PMID: 34031488 PMCID: PMC8144422 DOI: 10.1038/s41598-021-90143-4] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 04/30/2021] [Indexed: 11/25/2022] Open
Abstract
Understanding mechanisms of resistance to abiraterone, one of the primary drugs approved for the treatment of castration resistant prostate cancer, remains a priority. The organic anion polypeptide 1B3 (OATP1B3, encoded by SLCO1B3) transporter has been shown to transport androgens into prostate cancer cells. In this study we observed and investigated the mechanism of induction of SLCO1B3 by abiraterone. Prostate cancer cells (22Rv1, LNCaP, and VCAP) were treated with anti-androgens and assessed for SLCO1B3 expression by qPCR analysis. Abiraterone treatment increased SLCO1B3 expression in 22Rv1 cells in vitro and in the 22Rv1 xenograft model in vivo. MicroRNA profiling of abiraterone-treated 22Rv1 cells was performed using a NanoString nCounter miRNA panel followed by miRNA target prediction. TargetScan and miRanda prediction tools identified hsa-miR-579-3p as binding to the 3'-untranslated region (3'UTR) of the SLCO1B3. Using dual luciferase reporter assays, we verified that hsa-miR-579-3p indeed binds to the SLCO1B3 3'UTR and significantly inhibited SLCO1B3 reporter activity. Treatment with abiraterone significantly downregulated hsa-miR-579-3p, indicating its potential role in upregulating SLCO1B3 expression. In this study, we demonstrated a novel miRNA-mediated mechanism of abiraterone-induced SLCO1B3 expression, a transporter that is also responsible for driving androgen deprivation therapy resistance. Understanding mechanisms of abiraterone resistance mediated via differential miRNA expression will assist in the identification of potential miRNA biomarkers of treatment resistance and the development of future therapeutics.
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Affiliation(s)
- Roberto H Barbier
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 9000 Rockville Pike, Building 10, Room 5A03, Bethesda, MD, 20892, USA
| | - Edel M McCrea
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 9000 Rockville Pike, Building 10, Room 5A03, Bethesda, MD, 20892, USA
| | - Kristi Y Lee
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 9000 Rockville Pike, Building 10, Room 5A03, Bethesda, MD, 20892, USA
| | - Jonathan D Strope
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 9000 Rockville Pike, Building 10, Room 5A03, Bethesda, MD, 20892, USA
| | - Emily N Risdon
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 9000 Rockville Pike, Building 10, Room 5A03, Bethesda, MD, 20892, USA
| | - Douglas K Price
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 9000 Rockville Pike, Building 10, Room 5A03, Bethesda, MD, 20892, USA
| | - Cindy H Chau
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 9000 Rockville Pike, Building 10, Room 5A03, Bethesda, MD, 20892, USA
| | - William D Figg
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, 9000 Rockville Pike, Building 10, Room 5A03, Bethesda, MD, 20892, USA.
- Clinical Pharmacology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA.
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6
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Pavlič R, Vidic S, Anko M, Knific T, Büdefeld T, Marton K, Sinreih M, Poschner S, Jäger W, Frković-Grazio S, Rižner TL. Altered Profile of E1-S Transporters in Endometrial Cancer: Lower Protein Levels of ABCG2 and OSTβ and Up-Regulation of SLCO1B3 Expression. Int J Mol Sci 2021; 22:3819. [PMID: 33917029 PMCID: PMC8067723 DOI: 10.3390/ijms22083819] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 03/31/2021] [Accepted: 04/01/2021] [Indexed: 11/16/2022] Open
Abstract
Endometrial cancer (EC) is associated with increased estrogen actions. Locally, estrogens can be formed from estrone-sulphate (E1-S) after cellular uptake by organic anion-transporting polypeptides (OATP) or organic anion transporters (OAT). Efflux of E1-S is enabled by ATP Binding Cassette transporters (ABC) and organic solute transporter (OST)αβ. Currently, 19 E1-S transporters are known but their roles in EC are not yet understood. Here, we analysed levels of E1-S transporters in Ishikawa (premenopausal EC), HEC-1-A (postmenopausal EC), HIEEC (control) cell lines, in EC tissue, examined metabolism of steroid precursor E1-S, studied effects of OATPs' inhibition and gene-silencing on E1-S uptake, and assessed associations between transporters and histopathological data. Results revealed enhanced E1-S metabolism in HEC-1-A versus Ishikawa which could be explained by higher levels of OATPs in HEC-1-A versus Ishikawa, especially 6.3-fold up-regulation of OATP1B3 (SLCO1B3), as also confirmed by immunocytochemical staining and gene silencing studies, lower ABCG2 expression and higher levels of sulfatase (STS). In EC versus adjacent control tissue the highest differences were seen for ABCG2 and SLC51B (OSTβ) which were 3.0-fold and 2.1-fold down-regulated, respectively. Immunohistochemistry confirmed lower levels of these two transporters in EC versus adjacent control tissue. Further analysis of histopathological data indicated that SLCO1B3 might be important for uptake of E1-S in tumours without lymphovascular invasion where it was 15.6-fold up-regulated as compared to adjacent control tissue. Our results clearly indicate the importance of E1-S transporters in EC pathophysiology and provide a base for further studies towards development of targeted treatment.
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Affiliation(s)
- Renata Pavlič
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia; (R.P.); (S.V.); (M.A.); (T.K.); (T.B.); (K.M.); (M.S.)
| | - Suzana Vidic
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia; (R.P.); (S.V.); (M.A.); (T.K.); (T.B.); (K.M.); (M.S.)
| | - Maja Anko
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia; (R.P.); (S.V.); (M.A.); (T.K.); (T.B.); (K.M.); (M.S.)
| | - Tamara Knific
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia; (R.P.); (S.V.); (M.A.); (T.K.); (T.B.); (K.M.); (M.S.)
| | - Tomaž Büdefeld
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia; (R.P.); (S.V.); (M.A.); (T.K.); (T.B.); (K.M.); (M.S.)
| | - Kristina Marton
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia; (R.P.); (S.V.); (M.A.); (T.K.); (T.B.); (K.M.); (M.S.)
| | - Maša Sinreih
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia; (R.P.); (S.V.); (M.A.); (T.K.); (T.B.); (K.M.); (M.S.)
| | - Stefan Poschner
- Department of Pharmaceutical Chemistry, University of Vienna, 1090 Vienna, Austria; (S.P.); (W.J.)
| | - Walter Jäger
- Department of Pharmaceutical Chemistry, University of Vienna, 1090 Vienna, Austria; (S.P.); (W.J.)
| | - Snježana Frković-Grazio
- Department of Gynecological Pathology, Division of Gynaecology and Obstetrics, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia;
| | - Tea Lanišnik Rižner
- Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia; (R.P.); (S.V.); (M.A.); (T.K.); (T.B.); (K.M.); (M.S.)
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Farasyn T, Xu C, Yue W. Development of a Rat Sandwich-Cultured Hepatocytes Model Expressing Functional Human Organic Anion Transporting Polypeptide (OATP) 1B3: A Potential Screening Tool for Liver-Targeting Compounds. J Pharm Pharm Sci 2021; 24:475-483. [PMID: 34516949 DOI: 10.18433/jpps31818] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
PURPOSE Organic anion transporting polypeptide (OATP) 1B3 transports many clinically important drugs, including statins, from blood into the liver. It exclusively expresses in human liver under normal physiological conditions. There is no rodent ortholog of human OATP1B3. Tissue targeting of therapeutic molecules mediated by transporters, including liver-targeting via liver-specific OATPs, is an emerging area in drug development. Sandwich-cultured primary hepatocytes (SCH) are a well characterized in vitro model for assessment of hepatic drug uptake and biliary excretion. The current study was designed to develop a novel rat SCH model expressing human OATP1B3 to study the hepatic disposition of OATP1B3 substrates. METHODS Primary rat hepatocytes transduced with adenoviral vectors expressing FLAG-tagged OATP1B3 (Ad-OATP1B3), a control vector Ad-LacZ, or that were non-transduced were cultured in a sandwich configuration. FLAG immunoblot and immunofluorescence-staining determined expression and localization of OATP1B3. Uptake of [3H]-cholecystokinin octapeptide (CCK-8), a specific OATP1B3 substrate, was determined. Taurocholate (TC) is a substrate routinely used in SCH to assess biliary excretion via bile canaliculi (BC) and is also a substrate of OATP1B3. [3H]-TC accumulation in cells+BC, cells, biliary excretion index (BEI) and in vitro Clbiliary were determined using B-CLEAR® technology. RESULTS OATP1B3 protein was extensively expressed and primarily localized on the plasma membrane in day 4 Ad-OATP1B3-transduced rat SCH. [3H]-CCK-8 accumulation in cells+BC was significantly greater (~5-13 folds, p<0.001) in day 4 SCH with vs. without Ad-OATP1B3-transduction. Expressing OATP1B3 in rat SCH significantly increased [3H]-TC accumulation in cells+BC and cells, without affecting BEI and in vitro Clbiliary. CONCLUSIONS Rat SCH expressing human OATP1B3-is a novel in vitro model allowing simultaneous assessment of hepatic uptake, hepatocellular accumulation and biliary excretion process of a human OATP1B3 substrate. This model could be a potential tool for screening for liver-targeting compounds mediated by OATP1B3.
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Affiliation(s)
- Taleah Farasyn
- College of Pharmacy, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Chao Xu
- College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
| | - Wei Yue
- College of Pharmacy, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, USA
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Zhi H, Yuan Y, Zhang C, Jiang Y, Zhang H, Wang C, Ruan J. Importance of OATP1B1 and 1B3 in the Liver Uptake of Luteolin and Its Consequent Glucuronidation Metabolites. J Agric Food Chem 2020; 68:2063-2070. [PMID: 32009392 DOI: 10.1021/acs.jafc.9b06954] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Luteolin is a typical flavonoid and broadly distributed in the plants. Oral bioavailability of luteolin is low owing to extensive metabolism. Regioselective glucuronidation by UDP-glucuronosyltransferases (UGTs) and liver uptake by organic anion transporting polypeptides (OATPs) of luteolin and consequent glucuronidation metabolites were studied. Luteolin-3'-O-glucuronide (L-3'-G) and luteolin-7-O-glucuronide (L-7-G) were the major metabolites in human liver microsomes. Further study demonstrated that UGT1A9 played a predominant role in the glucuronidation of luteolin. Transporter study showed that OATP1B1- and 1B3-transfected cells selectively uptake L-3'-G into cells but not luteolin or L-7-G. After intravenous administration of luteolin to mice, the area under the curve of L-3'-G in the plasma was the highest among luteolin, L-3'-G, and L-7-G. In the liver, the concentration of L-3'-G was significantly greater than L-7-G. In conclusion, OATP1B1 and OATP1B3 play an important role in the liver disposition of luteolin and its glucuronidation metabolites.
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Affiliation(s)
- Hui Zhi
- College of Pharmaceutical Sciences , Soochow University , Suzhou 215123 , China
- Clinical Pharmacy Lab, Department of Pharmacy , The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University , Suzhou 215123 , China
| | - Yuan Yuan
- Department of Pharmacy , The Affiliated Wuxi Matemity and Child Health Care Hospital of Nanjing Medical University , Wuxi 214000 , China
| | - Chunzhen Zhang
- College of Pharmaceutical Sciences , Soochow University , Suzhou 215123 , China
| | - Yiguo Jiang
- Clinical Pharmacy Lab, Department of Pharmacy , The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University , Suzhou 215123 , China
| | - Hongjian Zhang
- Clinical Pharmacy Lab, Department of Pharmacy , The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University , Suzhou 215123 , China
| | - Cheng Wang
- Clinical Pharmacy Lab, Department of Pharmacy , The Affiliated Suzhou Science and Technology Town Hospital of Nanjing Medical University , Suzhou 215123 , China
| | - Jianqing Ruan
- College of Pharmaceutical Sciences , Soochow University , Suzhou 215123 , China
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9
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Jeon JH, Lee S, Lee W, Jin S, Kwon M, Shin CH, Choi MK, Song IS. Herb-Drug Interaction of Red Ginseng Extract and Ginsenoside Rc with Valsartan in Rats. Molecules 2020; 25:E622. [PMID: 32023909 PMCID: PMC7037682 DOI: 10.3390/molecules25030622] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 11/14/2019] [Revised: 01/14/2020] [Accepted: 01/29/2020] [Indexed: 02/07/2023] Open
Abstract
The purpose of this study was to investigate the herb-drug interactions involving red ginseng extract (RGE) or ginsenoside Rc with valsartan, a substrate for organic anion transporting polypeptide (OATP/Oatp) transporters. In HEK293 cells overexpressing drug transporters, the protopanaxadiol (PPD)-type ginsenosides- Rb1, Rb2, Rc, Rd, Rg3, compound K, and Rh2-inhibited human OATP1B1 and OATP1B3 transporters (IC50 values of 7.99-68.2 µM for OATP1B1; 1.36-30.8 µM for OATP1B3), suggesting the herb-drug interaction of PPD-type ginsenosides involving OATPs. Protopanaxatriol (PPT)-type ginsenosides-Re, Rg1, and Rh1-did not inhibit OATP1B1 and OATP1B3 and all ginsenosides tested didn't inhibit OCT and OAT transporters. However, in rats, neither RGE nor Rc, a potent OATP inhibitor among PPD-type ginsenoside, changed in vivo pharmacokinetics of valsartan following repeated oral administration of RGE (1.5 g/kg/day for 7 days) or repeated intravenous injection of Rc (3 mg/kg for 5 days). The lack of in vivo herb-drug interaction between orally administered RGE and valsartan could be attributed to the low plasma concentration of PPD-type ginsenosides (5.3-48.4 nM). Even high plasma concentration of Rc did not effectively alter the pharmacokinetics of valsartan because of high protein binding and the limited liver distribution of Rc. The results, in conclusion, would provide useful information for herb-drug interaction between RGE or PPD-type ginsenosides and Oatp substrate drugs.
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Affiliation(s)
- Ji-Hyeon Jeon
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Korea; (J.-H.J.); (S.L.); (M.K.); (C.H.S.)
| | - Sowon Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Korea; (J.-H.J.); (S.L.); (M.K.); (C.H.S.)
| | - Wonpyo Lee
- College of Pharmacy, Dankook University, Cheon-an 31116, Korea; (W.L.); (S.J.)
| | - Sojeong Jin
- College of Pharmacy, Dankook University, Cheon-an 31116, Korea; (W.L.); (S.J.)
| | - Mihwa Kwon
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Korea; (J.-H.J.); (S.L.); (M.K.); (C.H.S.)
| | - Chul Hwi Shin
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Korea; (J.-H.J.); (S.L.); (M.K.); (C.H.S.)
| | - Min-Koo Choi
- College of Pharmacy, Dankook University, Cheon-an 31116, Korea; (W.L.); (S.J.)
| | - Im-Sook Song
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu 41566, Korea; (J.-H.J.); (S.L.); (M.K.); (C.H.S.)
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10
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Yue M, Yang J, Jin M, Steiert B, Xiang Y, Zhang H, Hagenbuch B, Gui C. Gly45 and Phe555 in Transmembrane Domains 1 and 10 Are Critical for the Activation of Organic Anion Transporting Polypeptide 1B3 by Epigallocatechin Gallate. J Agric Food Chem 2019; 67:9079-9087. [PMID: 31353905 PMCID: PMC6892160 DOI: 10.1021/acs.jafc.9b03812] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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] [Indexed: 05/16/2023]
Abstract
Organic anion transporting polypeptides (OATPs) 1B1 and 1B3 are two highly homologous transporters expressed in the human liver. However, epigallocatechin gallate (EGCG), which is the most predominant catechin in green tea, has opposite effects on the function of OATP1B1 and OATP1B3. In the present study, the critical structural domains and amino acid residues for the activation of OATP1B3 by EGCG have been determined by characterizing the function of a series of OATP1B3-derived chimeric transporters, site-directed mutagenesis, and kinetic studies. Our results showed that G45 and F555 in transmembrane domains 1 and 10 are the most important amino acid residues for OATP1B3 activation. Kinetic studies showed that the activation of OATP1B3 by EGCG at a low substrate concentration was due to its increased substrate binding affinity. However, EGCG caused increased Km and decreased Vmax for 1B3-G45A and 1B3-F555H. The flexibility at position 45 and aromaticity at position 555 might be important for OATP1B3 activation. While 1B3-G45A and 1B3-F555H could not be activated by EGCG, their transport activity for EGCG was comparable to that of wild-type OATP1B3. In conclusion, the present study elucidated the molecular mechanism for OATP1B3 activation by EGCG.
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Affiliation(s)
- Mei Yue
- Department of Pharmaceutical Analysis, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Jingjie Yang
- Department of Pharmaceutical Analysis, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Meng Jin
- Department of Pharmaceutical Analysis, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Brianna Steiert
- Department of Pharmacology, Toxicology and Therapeutics, the University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Yiqun Xiang
- Department of Pharmaceutical Analysis, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Hongjian Zhang
- Department of Pharmaceutical Analysis, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
| | - Bruno Hagenbuch
- Department of Pharmacology, Toxicology and Therapeutics, the University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Chunshan Gui
- Department of Pharmaceutical Analysis, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China
- Corresponding author: Chunshan Gui, Department of Pharmaceutical Analysis, College of Pharmaceutical Sciences, Soochow University, 199 Renai Road, Suzhou Industrial Park, Suzhou 215123, China. Tel.: +86-512-65882089; Fax: +86-512-65882089
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11
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Chen SQ, Ding WH, Zhang N, Xiang Q, Cui YM, Zhao X. Influence of OATP1B1 and OATP1B3 mutations and glomerular filtration rate on trough serum digoxin concentration in the Chinese population: A prospective cohort study. Medicine (Baltimore) 2019; 98:e15088. [PMID: 30946364 PMCID: PMC6456138 DOI: 10.1097/md.0000000000015088] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Polymorphisms of organic anion transporting polypeptides (OATPs) have been reported to affect trough serum digoxin concentration (SDC). However, the association of these polymorphisms with trough SDC in Chinese heart failure patients has not been studied. We aim to explore whether OATP1B1 388A>G, OATP1B1 521T>C, and OATP1B3 699G>A influence trough SDC in Chinese heart failure patients and to make clinical recommendations.Chinese patients (n = 104) diagnosed with heart failure under long-term digoxin therapy (0.125 mg daily) were enrolled in this study. Blood samples were collected for the analysis of trough SDC (immunofluorescence) and the polymorphisms of OATP1B1 388A>G, OATP1B1 521T>C, and OATP1B3 699G>A (PCR-RFLP and Sanger sequencing).Patients with glomerular filtration rate (GFR) under 30 mL/min had significantly higher trough SDC (1.20 ± 0.50 ng/mL) than recommended trough SDC for heart failure patients. Trough SDC was not significantly influenced by mutations of OATP1B1 388A>G (P = .890), 521T>C (P = .054), and OATP1B3 699G>A (P = .854). Patients with OATP1B1 521T>C mutant-type carrier had slightly higher trough SDC (0.98 ± 0.53 ng/mL) than those with wild-type carrier (0.74 ± 0.40 ng/mL) when they have repaired renal function.Heart failure patients with severe renal dysfunction (GFR<60 mL/min) and/or OATP1B1 521T>C mutant-type carriers are recommended a smaller dosage of digoxin and strict therapeutic drug monitoring.
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Affiliation(s)
| | - Wen-hui Ding
- Department of Cardiology, Peking University First Hospital, Beijing, China
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12
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Darwish HYA, Dalirsefat SB, Dong X, Hua G, Chen J, Zhang Y, Li J, Xu J, Li J, Deng X, Wu C. Genome-wide association study and a post replication analysis revealed a promising genomic region and candidate genes for chicken eggshell blueness. PLoS One 2019; 14:e0209181. [PMID: 30673708 PMCID: PMC6343938 DOI: 10.1371/journal.pone.0209181] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 12/01/2018] [Indexed: 11/19/2022] Open
Abstract
The eggshell blueness is an interesting object for chicken genetic studies and blue-shelled chicken industry, especially after the discovery of the causative mutation of chicken blue eggshell. In the present study, genome wide association study (GWAS) was conducted in Chinese Dongxiang blue-shelled chicken underlying four traits of blue eggshell pigments: quantity of biliverdin (QB), quantity of protoporphyrin (QP), quantity of total pigment (QT), and color density trait (CD). A total of 139 individuals were randomly collected for GWAS. We detected two SNPs in genome-wise significance and 35 in suggestive significance, 24 out of the 37 SNP were located either within intron/exon or near 15 genes in a range of ~1.17 Mb on GGA21. For further confirmation of the identified SNP loci by GWAS, the follow-up replication studies were performed in two populations. A total of 146 individuals of the second generation derived from the former GWAS population, as well as 280 individuals from an alternative independent population were employed for genotyping by MALDI-TOF MS in a genotype-phenotype association study. Eighteen SNPs evenly distributed on the GGA21 significant region were successfully genotyped in the two populations, of which 4 and 6 SNP loci were shown significantly associated with QB, QT and QP in the two repeat populations, respectively. Further, the SNPs were narrowed down to a region of ~ 653.819 Kb on GGA21 that harbors five candidate genes: AJAP1, TNFRSF9, C1ORF174, CAMTA1, and CEP104. Shell gland of chickens laying dark and light blue eggshell was chosen for detection of mRNA expression of the five candidate genes. The results showed differential expression levels of these genes in the two groups. The specific function of these genes has not yet been defined clearly in chickens and further in-depth studies are needed to explore the new functional role in chicken eggshell blueness.
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Affiliation(s)
- Hesham Y. A. Darwish
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture, China Agricultural University, Beijing, China
- Animal Production Research Institute, Agricultural Research Center, Ministry of Agriculture and Land Reclamation, Giza, Egypt
| | - Seyed Benyamin Dalirsefat
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture, China Agricultural University, Beijing, China
- Department of Animal Science, Faculty of Agricultural Sciences, University of Guilan, Rasht, Guilan, Iran
| | - Xianggui Dong
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture, China Agricultural University, Beijing, China
| | - Guoying Hua
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture, China Agricultural University, Beijing, China
| | - Jianfei Chen
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture, China Agricultural University, Beijing, China
| | - Yuanyuan Zhang
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture, China Agricultural University, Beijing, China
| | - Jianxiong Li
- Jiangxi Donghua Livestock & Poultry Breeding Co. Ltd., Jiangxi, China
| | - Jiansheng Xu
- Jiangxi Donghua Livestock & Poultry Breeding Co. Ltd., Jiangxi, China
| | - Junying Li
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture, China Agricultural University, Beijing, China
| | - Xuemei Deng
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture, China Agricultural University, Beijing, China
| | - Changxin Wu
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding, and Reproduction of the Ministry of Agriculture, China Agricultural University, Beijing, China
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13
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Škarić-Jurić T, Tomas Ž, Zajc Petranović M, Božina N, Smolej Narančić N, Janićijević B, Salihović MP. Characterization of ADME genes variation in Roma and 20 populations worldwide. PLoS One 2018; 13:e0207671. [PMID: 30452466 PMCID: PMC6242375 DOI: 10.1371/journal.pone.0207671] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 11/05/2018] [Indexed: 12/13/2022] Open
Abstract
The products of the polymorphic ADME genes are involved in Absorption, Distribution, Metabolism, and Excretion of drugs. The pharmacogenetic data have been studied extensively due to their clinical importance in the appropriate drug prescription, but such data from the isolated populations are rather scarce. We analyzed the distribution of 95 polymorphisms in 31 core ADME genes in 20 populations worldwide and in newly genotyped samples from the Roma (Gypsy) population living in Croatia. Global distribution of ADME core gene loci differentiated three major clusters; (1) African, (2) East Asian, and (3) joint European, South Asian and South American cluster. The SLCO1B3 (rs4149117) and CYP3A4 (rs2242480) genes differentiated at the highest level the African group of populations, while NAT2 gene loci (rs1208, rs1801280, and rs1799929) and VKORC1 (rs9923231) differentiated East Asian populations. The VKORC1 rs9923231 was among the investigated loci the one with the largest global minor allele frequency (MAF) range; its MAF ranged from 0.027 in Nigeria to 0.924 in Han Chinese. The distribution of the investigated gene loci positions Roma population within the joined European and South Asian clusters, suggesting that their ADME gene pool is a combination of ancestral (Indian) and more recent (European) surrounding, as it was already implied by other genetic markers. However, when compared to the populations worldwide, the Croatian Roma have extreme MAF values in 10 out of the 95 investigated ADME core gene loci. Among loci which have extraordinary MAFs in Roma population two have strong proof of clinical importance: rs1799853 (CYP2C9) for warfarin dosage, and rs12248560 (CYP2C19) for clopidogrel dosage, efficacy and toxicity. This finding confirms the importance of taking the Roma as well as the other isolated populations`genetic profiles into account in pharmaco-therapeutic practice.
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Affiliation(s)
| | - Željka Tomas
- Institute for Anthropological Research, Zagreb, Croatia
| | | | - Nada Božina
- Department for Pharmacogenomics and Therapy Individualization, University Hospital Center Zagreb, Department of Pharmacology, University of Zagreb School of Medicine, Zagreb, Croatia
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14
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Posbergh CJ, Kalla SE, Sutter NB, Tennant BC, Huson HJ. Mutation responsible for congenital photosensitivity and hyperbilirubinemia in Southdown sheep. Am J Vet Res 2018; 79:538-545. [PMID: 29688779 DOI: 10.2460/ajvr.79.5.538] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To identify the genetic cause for congenital photosensitivity and hyperbilirubinemia (CPH) in Southdown sheep. ANIMALS 73 Southdown sheep from a CPH research flock and 48 sheep of various breeds from commercial flocks without CPH. PROCEDURES Whole-genome sequencing was performed for a phenotypically normal Southdown sheep heterozygous for CPH. Heterozygous variants within Slco1b3 coding exons were identified, and exons that contained candidate mutations were amplified by PCR assay methods for Sanger sequencing. Blood samples from the other 72 Southdown sheep of the CPH research flock were used to determine plasma direct and indirect bilirubin concentrations. Southdown sheep with a plasma total bilirubin concentration < 0.3 mg/dL were classified as controls, and those with a total bilirubin concentration ≥ 0.3 mg/dL and signs of photosensitivity were classified as mutants. Sanger sequencing was used to determine the Slco1b3 genotype for all sheep. Genotypes were compared between mutants and controls of the CPH research flock and among all sheep. Protein homology was measured across 8 species to detect evolutionary conservation of Slco1b. RESULTS A nonsynonymous mutation at ovine Chr3:193,691,195, which generated a glycine-to-arginine amino acid change within the predicted Slco1b3 protein, was significantly associated with hyperbilirubinemia and predicted to be deleterious. That amino acid was conserved across 7 other mammalian species. CONCLUSIONS AND CLINICAL RELEVANCE Results suggested a nonsynonymous mutation in Slco1b3 causes CPH in Southdown sheep. This disease appears to be similar to Rotor syndrome in humans. Sheep with CPH might be useful animals for Rotor syndrome research.
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15
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Taatjes DJ, Roth J. In focus in HCB. Histochem Cell Biol 2017; 148:343-344. [PMID: 28815335 DOI: 10.1007/s00418-017-1603-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/26/2017] [Indexed: 11/25/2022]
Affiliation(s)
- Douglas J Taatjes
- Department of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, 05405, USA.
| | - Jürgen Roth
- University of Zurich, 8091, Zurich, Switzerland
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16
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Sissung TM, Ley AM, Strope JD, McCrea EM, Beedie S, Peer CJ, Shukla S, van Velkinburgh J, Reece K, Troutman S, Campbell T, Fernandez E, Huang P, Smith J, Thakkar N, Venzon DJ, Brenner S, Lee W, Merino M, Luo J, Jager W, Price DK, Chau CH, Figg WD. Differential Expression of OATP1B3 Mediates Unconjugated Testosterone Influx. Mol Cancer Res 2017; 15:1096-1105. [PMID: 28389619 DOI: 10.1158/1541-7786.mcr-16-0477] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 02/06/2017] [Accepted: 04/04/2017] [Indexed: 12/21/2022]
Abstract
Castration-resistant prostate cancer (CRPC) has greater intratumoral testosterone concentrations than similar tumors from eugonadal men; simple diffusion does not account for this observation. This study was undertaken to ascertain the androgen uptake kinetics, functional, and clinical relevance of de novo expression of the steroid hormone transporter OATP1B3 (SLCO1B3). Experiments testing the cellular uptake of androgens suggest that testosterone is an excellent substrate of OATP1B3 (Km = 23.2 μmol/L; Vmax = 321.6 pmol/mg/minute), and cells expressing a doxycycline-inducible SLCO1B3 construct had greater uptake of a clinically relevant concentration of 3H-testosterone (50 nmol/L; 1.6-fold, P = 0.0027). When compared with Slco1b2 (-/-) mice, Slco1b2 (-/-)/hSLCO1B3 knockins had greater hepatic uptake (15% greater AUC, P = 0.0040) and lower plasma exposure to 3H-testosterone (17% lower AUC, P = 0.0030). Of 82 transporters genes, SLCO1B3 is the second-most differentially expressed transporter in CRPC cell lines (116-fold vs. androgen-sensitive cells), with a differentially spliced cancer-type ct-SLCO1B3 making up the majority of SLCO1B3 expression. Overexpression of SLCO1B3 in androgen-responsive cells results in 1.5- to 2-fold greater testosterone uptake, whereas siRNA knockdown of SLCO1B3 in CRPC cells did not change intracellular testosterone concentration. Primary human prostate tumors express SLCO1B3 to a greater extent than ct-SLCO1B3 (26% of total SLCO1B3 expression vs. 0.08%), suggesting that androgen uptake in these tumor cells also is greater. Non-liver tumors do not differentially express SLCO1B3.Implications: This study suggests that de novo OATP1B3 expression in prostate cancer drives greater androgen uptake and is consistent with previous observations that greater OATP1B3 activity results in the development of androgen deprivation therapy resistance and shorter overall survival. Mol Cancer Res; 15(8); 1096-105. ©2017 AACR.
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Affiliation(s)
- Tristan M Sissung
- Clinical Pharmacology Program, Office of the Clinical Director, NCI, Bethesda, Maryland
| | - Ariel M Ley
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, NCI, Bethesda, Maryland
| | - Jonathan D Strope
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, NCI, Bethesda, Maryland
| | - Edel M McCrea
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, NCI, Bethesda, Maryland
| | - Shaunna Beedie
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, NCI, Bethesda, Maryland
| | - Cody J Peer
- Clinical Pharmacology Program, Office of the Clinical Director, NCI, Bethesda, Maryland
| | | | | | - Kelie Reece
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, NCI, Bethesda, Maryland
| | - Sarah Troutman
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, NCI, Bethesda, Maryland
| | - Tessa Campbell
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, NCI, Bethesda, Maryland
| | - Elena Fernandez
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, NCI, Bethesda, Maryland
| | - Phoebe Huang
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, NCI, Bethesda, Maryland
| | - Jordan Smith
- Laboratory of Cancer Biology and Genetics, NCI, Bethesda, Maryland
| | - Nilay Thakkar
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky
| | - David J Venzon
- Biostatistics and Data Management Section, NCI, Bethesda, Maryland
| | - Stefan Brenner
- Department of Clinical Pharmacy and Diagnostics, University of Vienna, Vienna, Austria
| | - Wooin Lee
- College of Pharmacy, Seoul National University, Seoul, Korea
| | - Maria Merino
- Translational Surgical Pathology Section, NCI, Bethesda, Maryland
| | - Ji Luo
- Laboratory of Cancer Biology and Genetics, NCI, Bethesda, Maryland
| | - Walter Jager
- Department of Clinical Pharmacy and Diagnostics, University of Vienna, Vienna, Austria
| | - Douglas K Price
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, NCI, Bethesda, Maryland
| | - Cindy H Chau
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, NCI, Bethesda, Maryland
| | - William D Figg
- Clinical Pharmacology Program, Office of the Clinical Director, NCI, Bethesda, Maryland.
- Molecular Pharmacology Section, Genitourinary Malignancies Branch, NCI, Bethesda, Maryland
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