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Sychterz C, Shen H, Zhang Y, Sinz M, Rostami-Hodjegan A, Schmidt BJ, Gaohua L, Galetin A. A close examination of BCRP's role in lactation and methods for predicting drug distribution into milk. CPT Pharmacometrics Syst Pharmacol 2024. [PMID: 39292199 DOI: 10.1002/psp4.13243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Revised: 08/18/2024] [Accepted: 08/27/2024] [Indexed: 09/19/2024] Open
Abstract
Breastfeeding is the most complete nutritional method of feeding infants, but several impediments affect the decision to breastfeed, including questions of drug safety for medications needed during lactation. Despite recent FDA guidance, few labels provide clear dosing advice during lactation. Physiologically based pharmacokinetic modeling (PBPK) is well suited to mechanistically explore pharmacokinetics and dosing paradigms to fill gaps in the absence of extensive clinical studies and complement existing real-world data. For lactation-focused PBPK (Lact-PBPK) models, information on system parameters (e.g., expression of drug transporters in mammary epithelial cells) is sparse. The breast cancer resistance protein (BCRP) is expressed on the apical side of mammary epithelial cells where it actively transports drugs/substrates into milk (reported milk: plasma ratios range from 2 to 20). A critical review of BCRP and its role in lactation was conducted. Longitudinal changes in BCRP mRNA expression have been identified in women with a maximum reached around 5 months postpartum. Limited data are available on the ontogeny of BCRP in infant intestine; however, data indicate lower BCRP abundance in infants compared to adults. Current status of incorporation of drug transporter information in Lact-PBPK models to predict active secretion of drugs into breast milk and consequential exposure of breast-fed infants is discussed. In addition, this review highlights novel clinical tools for evaluation of BCRP activity, namely a potential non-invasive BCRP biomarker (riboflavin) and liquid biopsy that could be used to quantitatively elucidate the role of this transporter without the need for administration of drugs and to inform Lact-PBPK models.
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Affiliation(s)
- Caroline Sychterz
- Division of Pharmacy and Optometry, Centre for Applied Pharmacokinetic Research, School of Health Sciences, University of Manchester, Manchester, UK
- Bristol Myers Squibb, Princeton, New Jersey, USA
| | - Hong Shen
- Bristol Myers Squibb, Princeton, New Jersey, USA
| | | | - Michael Sinz
- Bristol Myers Squibb, Princeton, New Jersey, USA
| | - Amin Rostami-Hodjegan
- Division of Pharmacy and Optometry, Centre for Applied Pharmacokinetic Research, School of Health Sciences, University of Manchester, Manchester, UK
- Certara Predictive Technologies, Certara UK, Sheffield, UK
| | | | - Lu Gaohua
- Bristol Myers Squibb, Princeton, New Jersey, USA
| | - Aleksandra Galetin
- Division of Pharmacy and Optometry, Centre for Applied Pharmacokinetic Research, School of Health Sciences, University of Manchester, Manchester, UK
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Le Roux-Pullen L, Van den Heuvel JJMW, Jonis NB, Scheer-Weijers T, Dubbelboer IR, Koenderink JB, Russel FGM, Gehring R. In vitro screening model for compound interactions with human and dairy animal BCRP orthologs. J Vet Pharmacol Ther 2024; 47:437-441. [PMID: 38847265 DOI: 10.1111/jvp.13460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 04/24/2024] [Accepted: 05/21/2024] [Indexed: 11/15/2024]
Abstract
Orthologs of breast cancer resistance protein (BCRP/ABCG2), an ATP-binding cassette (ABC) efflux transmembrane transporter, are present in several species. The list of compounds known to interact with BCRP is growing, and many questions remain concerning species-specific variations in substrate specificity and affinity and the potency of inhibitors. As the most abundant efflux transporter known to be present in the blood-milk barrier, BCRP can increase the elimination of certain xenobiotics to milk, posing a risk for suckling offspring and dairy product consumers. Here we developed a model that can be employed to investigate species-specific differences between BCRP substrates and inhibitors. Membrane vesicles were isolated from transiently transduced human embryonic kidney (HEK) 293 cells, overexpressing BCRP, with human, bovine, caprine, and ovine cDNA sequences. To confirm BCRP transport activity in the transduced cells, D-luciferin efflux was measured and to confirm transport activity in the membrane vesicles, [3H] estrone-3-sulfate ([3H]E1S) influx was measured. We also determined the Michaelis-Menten constant (Km) and Vmax of [3H]E1S for each species. We have developed an in vitro transport model to study differences in compound interactions with BCRP orthologs from milk-producing animal species and humans. BCRP transport activity was demonstrated in the species-specific transduced cells by a reduced accumulation of D-luciferin compared with the control cells, indicating BCRP-mediated efflux of D-luciferin. Functionality of the membrane vesicle model was demonstrated by confirming ATP-dependent transport and by quantifying the kinetic parameters, Km and Vmax for the model substrate [3H]E1S. The values were not significantly different between species for the model substrates tested. This model can be insightful for appropriate inter-species extrapolations and risk assessments of xenobiotics in lactating woman and dairy animals.
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Affiliation(s)
- Lérica Le Roux-Pullen
- Faculty of Veterinary Medicine, Institute of Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - Jeroen J M W Van den Heuvel
- Department of Pharmacy, Division of Pharmacology and Toxicology, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - Noraly B Jonis
- Department of Pharmacy, Division of Pharmacology and Toxicology, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - Tom Scheer-Weijers
- Department of Pharmacy, Division of Pharmacology and Toxicology, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - Ilse R Dubbelboer
- Faculty of Veterinary Medicine, Institute of Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
- Department of Pharmaceutical Biosciences, Uppsala University, Uppsala, Sweden
| | - Jan B Koenderink
- Department of Pharmacy, Division of Pharmacology and Toxicology, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - Frans G M Russel
- Department of Pharmacy, Division of Pharmacology and Toxicology, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - Ronette Gehring
- Faculty of Veterinary Medicine, Institute of Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
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Álvarez-Fernández L, Blanco-Paniagua E, Merino G. ABCG2 Transports the Flukicide Nitroxynil and Affects Its Biodistribution and Secretion into Milk. Pharmaceutics 2024; 16:558. [PMID: 38675219 PMCID: PMC11054271 DOI: 10.3390/pharmaceutics16040558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/12/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024] Open
Abstract
The ABCG2 transporter plays a key role in pharmacological and toxicological processes, affecting bioavailability, tissue accumulation and milk secretion of its substrates. This protein is expressed in several biological barriers acting as a protective mechanism against xenobiotic exposure by pumping out a broad range of compounds. However, its induced expression during lactation in alveolar cells of mammary gland represents a relevant route for active transport of unwanted chemicals into milk. This work aimed to characterize the involvement of ABCG2 in systemic exposure and milk secretion of the flukicide nitroxynil. Using MDCK-II cells overexpressing the transporter, we showed that nitroxynil is an in vitro substrate of different species variants of ABCG2. Moreover, using wild-type and Abcg2-/- mice, we showed that murine Abcg2 clearly affects plasma levels of nitroxynil. We also reported differences in nitroxynil accumulation in several tissues, with almost 2-fold higher concentration in kidney, small intestine and testis of Abcg2-/- mice. Finally, we proved that nitroxynil secretion into milk was also affected by Abcg2, with a 1.9-fold higher milk concentration in wild-type compared with Abcg2-/- mice. We conclude that ABCG2 significantly impacts nitroxynil biodistribution by regulating its passage across biological barriers.
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Affiliation(s)
| | | | - Gracia Merino
- Department of Biomedical Sciences-Physiology, Faculty of Veterinary Medicine, Animal Health Institute (INDEGSAL), University of León, Campus de Vegazana s/n, 24071 León, Spain; (L.Á.-F.); (E.B.-P.)
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4
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Zhou F, Fan X, Xu X, Li Z, Qiu L, Miao Y. Molecular Characteristics and Polymorphisms of Buffalo ( Bubalus bubalis) ABCG2 Gene and Its Role in Milk Fat Synthesis. Animals (Basel) 2023; 13:3156. [PMID: 37835762 PMCID: PMC10571847 DOI: 10.3390/ani13193156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 09/24/2023] [Accepted: 10/04/2023] [Indexed: 10/15/2023] Open
Abstract
The ATP-binding cassette subfamily G member 2 (ABCG2) serves crucial roles in secreting riboflavin and biotin vitamins into the milk of cattle, mice, and humans, as well as in the transportation of xenotoxic and cytostatic drugs across the plasma membrane. However, the specific role of the ABCG2 gene in water buffaloes (Bubalus bubalis), especially its effect on milk fat synthesis in buffalo mammary epithelial cells (BuMECs), remains inadequately understood. In this study, the full-length CDS of the buffalo ABCG2 gene was isolated and identified from the mammary gland in buffaloes. A bioinformatics analysis showed a high degree of similarity in the transcriptional region, motifs, and conservative domains of the buffalo ABCG2 with those observed in other Bovidae species. The functional role of buffalo ABCG2 was associated with the transportation of solutes across lipid bilayers within cell membranes. Among the 11 buffalo tissues detected, the expression levels of ABCG2 were the highest in the liver and brain, followed by the mammary gland, adipose tissue, heart, and kidney. Notably, its expression in the mammary gland was significantly higher during peak lactation than during non-lactation. The ABCG2 gene was identified with five SNPs in river buffaloes, while it was monomorphic in swamp buffaloes. Functional experiments revealed that ABCG2 increased the triglyceride (TAG) content by affecting the expression of liposynthesis-related genes in BuMECs. The results of this study underscore the pivotal role of the ABCG2 gene in influencing the milk fat synthesis in BuMECs.
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Affiliation(s)
- Fangting Zhou
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China; (F.Z.); (X.F.); (X.X.); (Z.L.); (L.Q.)
- College of Chemistry, Biology and Environment, Yuxi Normal University, Yuxi 653100, China
| | - Xinyang Fan
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China; (F.Z.); (X.F.); (X.X.); (Z.L.); (L.Q.)
| | - Xiaoqi Xu
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China; (F.Z.); (X.F.); (X.X.); (Z.L.); (L.Q.)
| | - Zhuoran Li
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China; (F.Z.); (X.F.); (X.X.); (Z.L.); (L.Q.)
| | - Lihua Qiu
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China; (F.Z.); (X.F.); (X.X.); (Z.L.); (L.Q.)
| | - Yongwang Miao
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China; (F.Z.); (X.F.); (X.X.); (Z.L.); (L.Q.)
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Zhang T, Zou P, Fang Y, Li Y. Physiologically based pharmacokinetic model to predict drug concentrations of breast cancer resistance protein substrates in milk. Biopharm Drug Dispos 2022; 43:221-232. [PMID: 36265038 DOI: 10.1002/bdd.2335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 09/12/2022] [Accepted: 10/14/2022] [Indexed: 01/07/2023]
Abstract
Many mothers need to take some medications during breastfeeding, which may carry a risk to breastfed infants. Thus, determining the amount of a drug transferred into breast milk is critical for risk-benefit analysis of breastfeeding. Breast cancer resistance protein (BCRP), an efflux transporter which usually protects the body from environmental and dietary toxins, was reported to be highly expressed in lactating mammary glands. In this study, we developed a mechanistic lactation physiologically based pharmacokinetic (PBPK) modeling approach incorporating BCRP mediated transport kinetics to simulate the concentration-time profiles of five BCRP drug substrates (acyclovir, bupropion, cimetidine, ciprofloxacin, and nitrofurantoin) in nursing women's plasma and milk. Due to the lack of certain physiological parameters and scaling factors in nursing women, we combine the bottom up and top down PBPK modeling approaches together with literature reported data to optimize and determine a set of parameters that are applicable for all five drugs. The predictive performance of the PBPK models was assessed by comparing predicted pharmacokinetic profiles and the milk-to-plasma (M/P) ratio with clinically reported data. The predicted M/P ratios for acyclovir, bupropion, cimetidine, ciprofloxacin, and nitrofurantoin were 2.48, 3.70, 3.55, 1.21, and 5.78, which were all within 1.5-fold of the observed values. These PBPK models are useful to predict the PK profiles of those five drugs in the milk for different dosing regimens. Furthermore, the approach proposed in this study will be applicable to predict pharmacokinetics of other transporter substrates in the milk.
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Affiliation(s)
- Tao Zhang
- Department of Pharmaceutical Sciences, SUNY-Binghamton University, Johnson City, New York, USA
| | - Peng Zou
- Daiichi Sankyo, Inc, Basking Ridge, New Jersey, USA
| | - Yingsi Fang
- Department of Pharmaceutical Sciences, SUNY-Binghamton University, Johnson City, New York, USA
| | - Yanyan Li
- School of Food and Agriculture, College of Natural Sciences, Forestry, and Agriculture, University of Maine, Orono, Maine, USA
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Gunes Y, Okyar A, Krajcsi P, Fekete Z, Ustuner O. Modulation of monepantel secretion into milk by soy isoflavones. J Vet Pharmacol Ther 2022; 46:185-194. [PMID: 36448496 DOI: 10.1111/jvp.13106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 11/05/2022] [Accepted: 11/18/2022] [Indexed: 12/05/2022]
Abstract
Monepantel (MNP), a novel anthelmintic drug from amino-acetonitrile derivatives, is a substrate for breast cancer resistance protein (BCRP). BCRP-mediated milk secretion of drugs can be altered by isoflavones. In this study, we aimed to show how soy isoflavones and BCRP inhibitors genistein (GEN) and daidzein (DAI) can modulate the secretion of MNP into milk. Moreover, we observed that the expression of BCRP in the lactating mammary gland of sheep was significantly higher than in non-lactating sheep using Western blot analysis. These properties of MNP and MNPSO2 (monepantel sulfone, the major active metabolite of MNP), identified as a BCRP substrate in determining the interaction with BCRP, were examined by vesicular transport (VT) inhibition assays. In pharmacokinetic studies, we demonstrated the transport of MNP into milk in three experimental groups: G1 fed standard forage; G2 fed soy-enriched forage; G3 fed standard forage paired with orally administered exogenous GEN and DAI. The concentrations of MNP and MNPSO2 were analyzed by high-performance liquid chromatography. Compared to the control group (3.27 ± 1.13 vs. 5.46 ± 2.23), the AUC (0-840 h) milk/plasma ratio decreased by 40% in the soy-enriched diet group. The concentrations of GEN and DAI were determined using liquid chromatography coupled with tandem mass spectrometry in soy. A VT inhibition assay was conducted to determine the IC50 values for MNP and MNPSO2 as BCRP inhibitors. This study showed that milk excretion of a BCRP substrate, such as monepantel, can be diminished by the presence of isoflavones in the diet.
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Affiliation(s)
- Yigit Gunes
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine Istanbul University‐Cerrahpasa Istanbul Turkey
| | - Alper Okyar
- Department of Pharmacology, Faculty of Pharmacy Istanbul University Istanbul Turkey
| | - Peter Krajcsi
- Solvo Biotechnology, A Charles River Company, Faculty of Health Sciences Semmelweis University Budapest Hungary
| | | | - Oya Ustuner
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine Istanbul University‐Cerrahpasa Istanbul Turkey
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Lactose hydrate can increase the transcellular permeability of β-naphthol in rat jejunum and ileum. Mol Biol Rep 2022; 49:8685-8692. [PMID: 35767107 DOI: 10.1007/s11033-022-07709-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 06/14/2022] [Indexed: 10/17/2022]
Abstract
BACKGROUND The unstirred water layer (UWL) is an integral part of the apical surface of mucosal epithelia and comprises mucins (MUC), for which there are many molecular species. Galectins, a family of β-galactoside-binding lectins, form a lattice barrier on surface epithelial cells by interacting with MUC. Lactose inhibits the galectin-MUC interaction. Therefore, the present study investigated the galectin-MUC interaction in the mucosa of the gastrointestinal tract and its role in intestinal barrier functions. MATERIALS AND RESULTS The effects of lactose hydrate (LH) on the membrane permeability of the rat small intestine and Caco-2 cells were examined. LH enhanced the membrane permeability of the rat small intestine, which contains the UWL, via a transcellular route, for which the UWL is the rate limiting factor. The membrane permeability of Caco-2 cells, in which the UWL is insufficient, was not affected by LH. The apparent permeability coefficient (Papp) of a paracellular marker was not significantly altered in the rat small intestine or Caco-2 cells treated with LH at any concentration. Furthermore, the Papp of β-naphthol which is a transcellular marker was not significantly altered in Caco-2 cells treated with LH, but was significantly increased in the rat small intestine in a LH concentration-dependent manner. CONCLUSIONS The present results demonstrate that the physical barrier has an important function in gastrointestinal membrane permeability, and LH-induced changes increase the transcellular permeability of β-naphthol in rat small intestine.
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Karthika C, Sureshkumar R, Zehravi M, Akter R, Ali F, Ramproshad S, Mondal B, Kundu MK, Dey A, Rahman MH, Antonescu A, Cavalu S. Multidrug Resistance in Cancer Cells: Focus on a Possible Strategy Plan to Address Colon Carcinoma Cells. Life (Basel) 2022; 12:811. [PMID: 35743842 PMCID: PMC9224881 DOI: 10.3390/life12060811] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 05/26/2022] [Indexed: 12/20/2022] Open
Abstract
Even though various treatment methods are available for cancer, the death curve is not reducing. The diagnosis of cancer at the fourth stage and drug resistance are the leading reasons for treatment failure and lower survival rates. In this review article, we summarize the possible pitfalls during cancer treatment in general, which mainly include multidrug resistance, and propose a hypothesis for colorectal cancer specifically. We also evaluate multidrug resistance in cancer in general and colorectal cancer in particular and hypothesize a concept based on combination therapy with 5-fluorouracil, curcumin, and lipids for the possible management of colorectal cancer. In addition, a hypothetical approach, combining a synthetic agent and a natural chemotherapeutic agent, to treating colorectal cancer is also discussed. This hypothesis could improve the management of colorectal cancer.
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Affiliation(s)
- Chenmala Karthika
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty 643001, India;
| | - Raman Sureshkumar
- Department of Pharmaceutics, JSS College of Pharmacy, JSS Academy of Higher Education & Research, Ooty 643001, India;
| | - Mehrukh Zehravi
- Department of Clinical Pharmacy Girls Section, Prince Sattam Bin Abdul Aziz University, Alkharj 11942, Saudi Arabia;
| | - Rokeya Akter
- Department of Global Medical Science, Wonju College of Medicine, Yonsei University, 24, Wonju 26426, Korea;
| | - Faraat Ali
- Department of Licensing and Enforcement, Laboratory Services, Botswana Medicines Regulatory Authority (BoMRA), Gaborone 999106, Botswana;
| | - Sarker Ramproshad
- Department of Pharmacy, Ranada Prasad Shaha University, Narayanganj 1400, Bangladesh; (S.R.); (B.M.)
| | - Banani Mondal
- Department of Pharmacy, Ranada Prasad Shaha University, Narayanganj 1400, Bangladesh; (S.R.); (B.M.)
| | | | - Abhijit Dey
- Department of Life Sciences, Presidency University, Kolkata 700073, India;
| | - Md. Habibur Rahman
- Department of Global Medical Science, Wonju College of Medicine, Yonsei University, 24, Wonju 26426, Korea;
| | - Angela Antonescu
- Faculty of Medicine and Pharmacy, University of Oradea, Pta 1 Decembrie 10, 410087 Oradea, Romania;
| | - Simona Cavalu
- Faculty of Medicine and Pharmacy, University of Oradea, Pta 1 Decembrie 10, 410087 Oradea, Romania;
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Kukal S, Guin D, Rawat C, Bora S, Mishra MK, Sharma P, Paul PR, Kanojia N, Grewal GK, Kukreti S, Saso L, Kukreti R. Multidrug efflux transporter ABCG2: expression and regulation. Cell Mol Life Sci 2021; 78:6887-6939. [PMID: 34586444 PMCID: PMC11072723 DOI: 10.1007/s00018-021-03901-y] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 06/24/2021] [Accepted: 07/15/2021] [Indexed: 12/15/2022]
Abstract
The adenosine triphosphate (ATP)-binding cassette efflux transporter G2 (ABCG2) was originally discovered in a multidrug-resistant breast cancer cell line. Studies in the past have expanded the understanding of its role in physiology, disease pathology and drug resistance. With a widely distributed expression across different cell types, ABCG2 plays a central role in ATP-dependent efflux of a vast range of endogenous and exogenous molecules, thereby maintaining cellular homeostasis and providing tissue protection against xenobiotic insults. However, ABCG2 expression is subjected to alterations under various pathophysiological conditions such as inflammation, infection, tissue injury, disease pathology and in response to xenobiotics and endobiotics. These changes may interfere with the bioavailability of therapeutic substrate drugs conferring drug resistance and in certain cases worsen the pathophysiological state aggravating its severity. Considering the crucial role of ABCG2 in normal physiology, therapeutic interventions directly targeting the transporter function may produce serious side effects. Therefore, modulation of transporter regulation instead of inhibiting the transporter itself will allow subtle changes in ABCG2 activity. This requires a thorough comprehension of diverse factors and complex signaling pathways (Kinases, Wnt/β-catenin, Sonic hedgehog) operating at multiple regulatory levels dictating ABCG2 expression and activity. This review features a background on the physiological role of transporter, factors that modulate ABCG2 levels and highlights various signaling pathways, molecular mechanisms and genetic polymorphisms in ABCG2 regulation. This understanding will aid in identifying potential molecular targets for therapeutic interventions to overcome ABCG2-mediated multidrug resistance (MDR) and to manage ABCG2-related pathophysiology.
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Affiliation(s)
- Samiksha Kukal
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Debleena Guin
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India
- Department of Biotechnology, Delhi Technological University, Shahbad Daulatpur, Main Bawana Road, Delhi, 110042, India
| | - Chitra Rawat
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Shivangi Bora
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India
- Department of Biotechnology, Delhi Technological University, Shahbad Daulatpur, Main Bawana Road, Delhi, 110042, India
| | - Manish Kumar Mishra
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India
- Department of Biotechnology, Delhi Technological University, Shahbad Daulatpur, Main Bawana Road, Delhi, 110042, India
| | - Priya Sharma
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India
| | - Priyanka Rani Paul
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Neha Kanojia
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Gurpreet Kaur Grewal
- Department of Biotechnology, Kanya Maha Vidyalaya, Jalandhar, Punjab, 144004, India
| | - Shrikant Kukreti
- Nucleic Acids Research Lab, Department of Chemistry, University of Delhi (North Campus), Delhi, 110007, India
| | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University of Rome, P. le Aldo Moro 5, 00185, Rome, Italy
| | - Ritushree Kukreti
- Genomics and Molecular Medicine Unit, Institute of Genomics and Integrative Biology (IGIB), Council of Scientific and Industrial Research (CSIR), Mall Road, Delhi, 110007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Imperiale F, Lanusse C. The Pattern of Blood-Milk Exchange for Antiparasitic Drugs in Dairy Ruminants. Animals (Basel) 2021; 11:ani11102758. [PMID: 34679780 PMCID: PMC8532883 DOI: 10.3390/ani11102758] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/13/2021] [Accepted: 09/15/2021] [Indexed: 01/16/2023] Open
Abstract
Simple Summary This review article is focused on the description of the plasma–milk partition coefficients for different antiparasitic drug classes in dairy ruminants, and it contributes to rational pharmaco-therapy in lactating dairy animals, which is critical to understand the pattern of drug excretion in milk as well as the residual concentration patterns in dairy products elaborated by processing milk from drug-treated animals. Abstract The prolonged persistence of milk residual concentration of different antiparasitic drugs in lactating dairy animals should be considered before recommending their use (label or extra-label) for parasite control in dairy animals. The partition blood-to-milk ratio for different antiparasitic compounds depends on their ability to diffuse across the mammary gland epithelium. The high lipophilicity of some of the most widely used antiparasitic drugs explains their high partition into milk and the extended persistence of high residual concentrations in milk after treatment. Most of the antiparasitic drug compounds studied were shown to be stable in various milk-related industrial processes. Thus, the levels of residues detected in raw milk can be directly applicable to estimating consumer exposure and dietary intake calculations when consuming heat-processed fluid milk. However, after milk is processed to obtain milk products such as cheese, yogurt, ricotta, and butter, the residues of lipophilic antiparasitic drugs are higher than those measured in the milk used for their elaboration. This review article contributes pharmacokinetics-based information, which is useful to understand the relevance of rational drug-based parasite control in lactating dairy ruminants to avoid undesirable consequences of residual drug concentrations in milk and derived products intended for human consumption.
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Medically Important Alterations in Transport Function and Trafficking of ABCG2. Int J Mol Sci 2021; 22:ijms22062786. [PMID: 33801813 PMCID: PMC8001156 DOI: 10.3390/ijms22062786] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/04/2021] [Accepted: 03/05/2021] [Indexed: 02/06/2023] Open
Abstract
Several polymorphisms and mutations in the human ABCG2 multidrug transporter result in reduced plasma membrane expression and/or diminished transport function. Since ABCG2 plays a pivotal role in uric acid clearance, its malfunction may lead to hyperuricemia and gout. On the other hand, ABCG2 residing in various barrier tissues is involved in the innate defense mechanisms of the body; thus, genetic alterations in ABCG2 may modify the absorption, distribution, excretion of potentially toxic endo- and exogenous substances. In turn, this can lead either to altered therapy responses or to drug-related toxic reactions. This paper reviews the various types of mutations and polymorphisms in ABCG2, as well as the ways how altered cellular processing, trafficking, and transport activity of the protein can contribute to phenotypic manifestations. In addition, the various methods used for the identification of the impairments in ABCG2 variants and the different approaches to correct these defects are overviewed.
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Min L, Fink-Gremmels J, Li D, Tong X, Tang J, Nan X, Yu Z, Chen W, Wang G. An overview of aflatoxin B1 biotransformation and aflatoxin M1 secretion in lactating dairy cows. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2021; 7:42-48. [PMID: 33997330 PMCID: PMC8110862 DOI: 10.1016/j.aninu.2020.11.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 08/11/2020] [Accepted: 11/20/2020] [Indexed: 01/16/2023]
Abstract
Milk is considered a perfect natural food for humans and animals. However, aflatoxin B1 (AFB1) contaminating the feeds fed to lactating dairy cows can introduce aflatoxin M1 (AFM1), the main toxic metabolite of aflatoxins into the milk, consequently posing a risk to human health. As a result of AFM1 monitoring in raw milk worldwide, it is evident that high AFM1 concentrations exist in raw milk in many countries. Thus, the incidence of AFM1 in milk from dairy cows should not be underestimated. To further optimize the intervention strategies, it is necessary to better understand the metabolism of AFB1 and its biotransformation into AFM1 and the specific secretion pathways in lactating dairy cows. The metabolism of AFB1 and its biotransformation into AFM1 in lactating dairy cows are drawn in this review. Furthermore, recent data provide evidence that in the mammary tissue of lactating dairy cows, aflatoxins significantly increase the activity of a protein, ATP-binding cassette super-family G member 2 (ABCG2), an efflux transporter known to facilitate the excretion of various xenobiotics and veterinary drugs into milk. Further research should focus on identifying and understanding the factors that affect the expression of ABCG2 in the mammary gland of cows.
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Affiliation(s)
- Li Min
- State Key Laboratory of Livestock and Poultry Breeding, Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China, Guangdong Public Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Johanna Fink-Gremmels
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - Dagang Li
- State Key Laboratory of Livestock and Poultry Breeding, Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China, Guangdong Public Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Xiong Tong
- State Key Laboratory of Livestock and Poultry Breeding, Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China, Guangdong Public Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Jing Tang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xuemei Nan
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zhongtang Yu
- Department of Animal Sciences, The Ohio State University, Columbus, USA
| | - Weidong Chen
- State Key Laboratory of Livestock and Poultry Breeding, Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China, Guangdong Public Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Gang Wang
- State Key Laboratory of Livestock and Poultry Breeding, Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South China, Guangdong Public Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou, China
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Rosa B. Equine Drug Transporters: A Mini-Review and Veterinary Perspective. Pharmaceutics 2020; 12:pharmaceutics12111064. [PMID: 33171593 PMCID: PMC7695171 DOI: 10.3390/pharmaceutics12111064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 11/02/2020] [Accepted: 11/04/2020] [Indexed: 11/16/2022] Open
Abstract
Xenobiotic transport proteins play an important role in determining drug disposition and pharmacokinetics. Our understanding of the role of these important proteins in humans and pre-clinical animal species has increased substantially over the past few decades, and has had an important impact on human medicine; however, veterinary medicine has not benefitted from the same quantity of research into drug transporters in species of veterinary interest. Differences in transporter expression cause difficulties in extrapolation of drug pharmacokinetic parameters between species, and lack of knowledge of species-specific transporter distribution and function can lead to drug–drug interactions and adverse effects. Horses are one species in which little is known about drug transport and transporter protein expression. The purpose of this mini-review is to stimulate interest in equine drug transport proteins and comparative transporter physiology.
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Affiliation(s)
- Brielle Rosa
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, 3280 Hospital Drive NW, TRW 2D01, Calgary, Alberta T2N 4Z6, Canada
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Kuhnert L, Giantin M, Dacasto M, Halwachs S, Honscha W. AhR-activating pesticides increase the bovine ABCG2 efflux activity in MDCKII-bABCG2 cells. PLoS One 2020; 15:e0237163. [PMID: 32764792 PMCID: PMC7413513 DOI: 10.1371/journal.pone.0237163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 07/21/2020] [Indexed: 11/19/2022] Open
Abstract
In bovine mammary glands, the ABCG2 transporter actively secretes xenobiotics into dairy milk. This can have significant implications when cattle are exposed to pesticide residues in feed. Recent studies indicate that the fungicide prochloraz activates the aryl hydrocarbon receptor (AhR) pathway, increasing bovine ABCG2 (bABCG2) gene expression and efflux activity. This could enhance the accumulation of bABCG2 substrates in dairy milk, impacting pesticide risk assessment. We therefore investigated whether 13 commonly used pesticides in Europe are inducers of AhR and bABCG2 activity. MDCKII cells expressing mammary bABCG2 were incubated with pesticides for up to 72 h. To reflect an in vivo situation, applied pesticide concentrations corresponded to the maximum residue levels (MRLs) permitted in bovine fat or muscle. AhR activation was ascertained through CYP1A mRNA expression and enzyme activity, measured by qPCR and 7-ethoxyresorufin-Ο-deethylase (EROD) assay, respectively. Pesticide-mediated increase of bABCG2 efflux activity was assessed using the Hoechst 33342 accumulation assay. For all assays, the known AhR-activating pesticide prochloraz served as a positive control, while the non-activating tolclofos-methyl provided the negative control. At 10-fold MRL concentrations, chlorpyrifos-methyl, diflufenican, ioxynil, rimsulfuron, and tebuconazole significantly increased CYP1A1 mRNA levels, CYP1A activity, and bABCG2 efflux activity compared to the vehicle control. In contrast, dimethoate, dimethomorph, glyphosate, iprodione, methiocarb and thiacloprid had no impact on AhR-mediated CYP1A1 mRNA levels, CYP1A activity or bABCG2 efflux. In conclusion, the MDCKII-bABCG2 cell model proved an appropriate tool for identifying AhR- and bABCG2-inducing pesticides. This provides an in vitro approach that could reduce the number of animals required in pesticide approval studies.
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Affiliation(s)
- Lydia Kuhnert
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, University Leipzig, Leipzig, Germany
- * E-mail:
| | - Mery Giantin
- Division of Veterinary Pharmacology and Toxicology, Department of Comparative Biomedicine and Food Science, University of Padua, Agripolis Legnaro (Padua), Italy
| | - Mauro Dacasto
- Division of Veterinary Pharmacology and Toxicology, Department of Comparative Biomedicine and Food Science, University of Padua, Agripolis Legnaro (Padua), Italy
| | - Sandra Halwachs
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, University Leipzig, Leipzig, Germany
| | - Walther Honscha
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, University Leipzig, Leipzig, Germany
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Dumková J, Smutná T, Vrlíková L, Kotasová H, Dočekal B, Čapka L, Tvrdoňová M, Jakešová V, Pelková V, Křůmal K, Coufalík P, Mikuška P, Večeřa Z, Vaculovič T, Husáková Z, Kanický V, Hampl A, Buchtová M. Variability in the Clearance of Lead Oxide Nanoparticles Is Associated with Alteration of Specific Membrane Transporters. ACS NANO 2020; 14:3096-3120. [PMID: 32105447 DOI: 10.1021/acsnano.9b08143] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Lead oxide nanoparticles (PbONPs), upon their entry into the lungs via inhalation, induce structural changes in primary and secondary target organs. The fate and ultrastructural localization of PbONPs in organs is known to be dependent on the specific organ. Here, we focused on the differences in the ability to clear the inhaled PbONPs from secondary target organs and on molecular and cellular mechanisms contributing to nanoparticle removal. Mice were exposed to PbONPs in whole-body inhalation chambers. Clearance of ionic lead and PbONPs (Pb/PbONPs) from the lungs and liver was very effective, with the lead being almost completely eliminated from the lungs and the physiological state of the lung tissue conspicuously restored. Kidneys exposed to nanoparticles did not exhibit serious signs of damage; however, LA-ICP-MS uncovered a certain amount of lead located preferentially in the kidney cortex even after a clearance period. The concentration of lead in femurs, as representatives of the axial skeleton, was the highest among studied organs at all designated time points after PbONP exposure, and the clearance ability of lead from the femurs was very low in contrast to other organs. The organ-specific increase of ABC transporters expression (ABCG2 in lungs and ABCC3 in the liver) was observed in exposed animals, suggesting their involvement in removing Pb/PbONPs from tissues. Moreover, the expression of caveolins and clathrin displayed a tissue-specific response to lead exposure. Our results uncovered high variability among the organs in their ability to clear Pb/PbONPs and in the transporters involved in this process.
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Affiliation(s)
- Jana Dumková
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, Brno 625 00, Czech Republic
| | - Tereza Smutná
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, Brno 625 00, Czech Republic
- Laboratory of Molecular Morphogenesis, Institute of Animal Physiology and Genetics, v.v.i., Czech Academy of Sciences, Brno 602 00, Czech Republic
| | - Lucie Vrlíková
- Laboratory of Molecular Morphogenesis, Institute of Animal Physiology and Genetics, v.v.i., Czech Academy of Sciences, Brno 602 00, Czech Republic
| | - Hana Kotasová
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, Brno 625 00, Czech Republic
| | - Bohumil Dočekal
- Institute of Analytical Chemistry, v.v.i., Czech Academy of Sciences, Brno 602 00, Czech Republic
| | - Lukáš Čapka
- Institute of Analytical Chemistry, v.v.i., Czech Academy of Sciences, Brno 602 00, Czech Republic
| | - Michaela Tvrdoňová
- Department of Chemistry, Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
| | - Veronika Jakešová
- Laboratory of Molecular Morphogenesis, Institute of Animal Physiology and Genetics, v.v.i., Czech Academy of Sciences, Brno 602 00, Czech Republic
| | - Vendula Pelková
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, Brno 625 00, Czech Republic
| | - Kamil Křůmal
- Institute of Analytical Chemistry, v.v.i., Czech Academy of Sciences, Brno 602 00, Czech Republic
| | - Pavel Coufalík
- Institute of Analytical Chemistry, v.v.i., Czech Academy of Sciences, Brno 602 00, Czech Republic
| | - Pavel Mikuška
- Institute of Analytical Chemistry, v.v.i., Czech Academy of Sciences, Brno 602 00, Czech Republic
| | - Zbyněk Večeřa
- Institute of Analytical Chemistry, v.v.i., Czech Academy of Sciences, Brno 602 00, Czech Republic
| | - Tomáš Vaculovič
- Department of Chemistry, Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
| | - Zuzana Husáková
- Department of Chemistry, Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
| | - Viktor Kanický
- Department of Chemistry, Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
| | - Aleš Hampl
- Department of Histology and Embryology, Faculty of Medicine, Masaryk University, Brno 625 00, Czech Republic
| | - Marcela Buchtová
- Laboratory of Molecular Morphogenesis, Institute of Animal Physiology and Genetics, v.v.i., Czech Academy of Sciences, Brno 602 00, Czech Republic
- Section of Animal Physiology and Immunology, Department of Experimental Biology, Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
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16
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Transporters in the Mammary Gland-Contribution to Presence of Nutrients and Drugs into Milk. Nutrients 2019; 11:nu11102372. [PMID: 31590349 PMCID: PMC6836069 DOI: 10.3390/nu11102372] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 09/19/2019] [Accepted: 09/25/2019] [Indexed: 02/07/2023] Open
Abstract
A large number of nutrients and bioactive ingredients found in milk play an important role in the nourishment of breast-fed infants and dairy consumers. Some of these ingredients include physiologically relevant compounds such as vitamins, peptides, neuroactive compounds and hormones. Conversely, milk may contain substances-drugs, pesticides, carcinogens, environmental pollutants-which have undesirable effects on health. The transfer of these compounds into milk is unavoidably linked to the function of transport proteins. Expression of transporters belonging to the ATP-binding cassette (ABC-) and Solute Carrier (SLC-) superfamilies varies with the lactation stages of the mammary gland. In particular, Organic Anion Transporting Polypeptides 1A2 (OATP1A2) and 2B1 (OATP2B1), Organic Cation Transporter 1 (OCT1), Novel Organic Cation Transporter 1 (OCTN1), Concentrative Nucleoside Transporters 1, 2 and 3 (CNT1, CNT2 and CNT3), Peptide Transporter 2 (PEPT2), Sodium-dependent Vitamin C Transporter 2 (SVCT2), Multidrug Resistance-associated Protein 5 (ABCC5) and Breast Cancer Resistance Protein (ABCG2) are highly induced during lactation. This review will focus on these transporters overexpressed during lactation and their role in the transfer of products into the milk, including both beneficial and harmful compounds. Furthermore, additional factors, such as regulation, polymorphisms or drug-drug interactions will be described.
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17
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Virkel G, Ballent M, Lanusse C, Lifschitz A. Role of ABC Transporters in Veterinary Medicine: Pharmaco- Toxicological Implications. Curr Med Chem 2019; 26:1251-1269. [DOI: 10.2174/0929867325666180201094730] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 11/14/2017] [Accepted: 12/22/2017] [Indexed: 01/10/2023]
Abstract
Unlike physicians, veterinary practitioners must deal with a number of animal species with crucial differences in anatomy, physiology and metabolism. Accordingly, the pharmacokinetic behaviour, the clinical efficacy and the adverse or toxic effects of drugs may differ across domestic animals. Moreover, the use of drugs in food-producing species may impose a risk for humans due to the generation of chemical residues in edible products, a major concern for public health and consumer's safety. As is clearly known in human beings, the ATP binding cassette (ABC) of transport proteins may influence the bioavailability and elimination of numerous drugs and other xenobiotics in domestic animals as well. A number of drugs, currently available in the veterinary market, are substrates of one or more transporters. Therefore, significant drug-drug interactions among ABC substrates may have unpredictable pharmacotoxicological consequences in different species of veterinary interest. In this context, different investigations revealed the major relevance of P-gp and other transport proteins, like breast cancer resistance protein (BCRP) and multidrug resistance-associated proteins (MRPs), in both companion and livestock animals. Undoubtedly, the discovery of the ABC transporters and the deep understanding of their physiological role in the different species introduced a new paradigm into the veterinary pharmacology. This review focuses on the expression and function of the major transport proteins expressed in species of veterinary interest, and their impact on drug disposition, efficacy and toxicity.
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Affiliation(s)
- Guillermo Virkel
- Laboratorio de Farmacologia, Centro de Investigacion Veterinaria de Tandil (CIVETAN-CONICETCICPBA), Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires (FCV-UNCPBA), Campus Universitario (Los Ombues y Reforma Universitaria), (7000) Tandil, Prov. de Buenos Aires, Argentina
| | - Mariana Ballent
- Laboratorio de Farmacologia, Centro de Investigacion Veterinaria de Tandil (CIVETAN-CONICETCICPBA), Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires (FCV-UNCPBA), Campus Universitario (Los Ombues y Reforma Universitaria), (7000) Tandil, Prov. de Buenos Aires, Argentina
| | - Carlos Lanusse
- Laboratorio de Farmacologia, Centro de Investigacion Veterinaria de Tandil (CIVETAN-CONICETCICPBA), Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires (FCV-UNCPBA), Campus Universitario (Los Ombues y Reforma Universitaria), (7000) Tandil, Prov. de Buenos Aires, Argentina
| | - Adrián Lifschitz
- Laboratorio de Farmacologia, Centro de Investigacion Veterinaria de Tandil (CIVETAN-CONICETCICPBA), Facultad de Ciencias Veterinarias, Universidad Nacional del Centro de la Provincia de Buenos Aires (FCV-UNCPBA), Campus Universitario (Los Ombues y Reforma Universitaria), (7000) Tandil, Prov. de Buenos Aires, Argentina
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18
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Martinez MN, Court MH, Fink-Gremmels J, Mealey KL. Population variability in animal health: Influence on dose-exposure-response relationships: Part I: Drug metabolism and transporter systems. J Vet Pharmacol Ther 2018; 41:E57-E67. [PMID: 29917248 DOI: 10.1111/jvp.12670] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 04/26/2018] [Accepted: 05/07/2018] [Indexed: 01/03/2023]
Abstract
There is an increasing effort to understand the many sources of population variability that can influence drug absorption, metabolism, disposition, and clearance in veterinary species. This growing interest reflects the recognition that this diversity can influence dose-exposure-response relationships and can affect the drug residues present in the edible tissues of food-producing animals. To appreciate the pharmacokinetic diversity that may exist across a population of potential drug product recipients, both endogenous and exogenous variables need to be considered. The American Academy of Veterinary Pharmacology and Therapeutics hosted a 1-day session during the 2017 Biennial meeting to explore the sources of population variability recognized to impact veterinary medicine. The following review highlights the information shared during that session. In Part I of this workshop report, we consider sources of population variability associated with drug metabolism and membrane transport. Part II of this report highlights the use of modeling and simulation to support an appreciation of the variability in dose-exposure-response relationships.
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Affiliation(s)
- Marilyn N Martinez
- Center for Veterinary Medicine, US Food and Drug Administration, Rockville, Maryland
| | - Michael H Court
- Program in Individualized Medicine, Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, Washington
| | - Johanna Fink-Gremmels
- Division of Pharmacology, Institute for Risk Assessment Sciences (IRAS), Utrecht University, Utrecht, The Netherlands
| | - Katrina L Mealey
- Program in Individualized Medicine, Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Washington State University, Pullman, Washington
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Ballent M, Viviani P, Imperiale F, Dominguez P, Halwachs S, Mahnke H, Honscha W, Lanusse C, Virkel G, Lifschitz A. Pharmacokinetic assessment of the monepantel plus oxfendazole combined administration in dairy cows. J Vet Pharmacol Ther 2017; 41:292-300. [PMID: 29139145 DOI: 10.1111/jvp.12466] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 10/06/2017] [Indexed: 12/21/2022]
Abstract
Monepantel (MNP) is a novel anthelmintic compound launched into the veterinary pharmaceutical market. MNP is not licenced for use in dairy animals due to the prolonged elimination of its metabolite monepantel sulphone (MNPSO2 ) into milk. The goal of this study was to evaluate the presence of potential in vivo drug-drug interactions affecting the pattern of milk excretion after the coadministration of the anthelmintics MNP and oxfendazole (OFZ) to lactating dairy cows. The concentrations of both parent drugs and their metabolites were measured in plasma and milk samples by HPLC. MNPSO2 was the main metabolite recovered from plasma and milk after oral administration of MNP. A high distribution of MNPSO2 into milk was observed. The milk-to-plasma ratio (M/P ratio) for this metabolite was equal to 6.75. Conversely, the M/P ratio of OFZ was 1.26. Plasma concentration profiles of MNP and MNPSO2 were not modified in the presence of OFZ. The pattern of MNPSO2 excretion into milk was also unchanged in animals receiving MNP plus OFZ. The percentage of the total administered dose recovered from milk was 0.09 ± 0.04% (MNP) and 2.79 ± 1.54% (MNPSO2 ) after the administration of MNP alone and 0.06 ± 0.04% (MNP) and 2.34 ± 1.38% (MNPSO2 ) after the combined treatment. The presence of MNP did not alter the plasma and milk disposition kinetics of OFZ. The concentrations of the metabolite fenbendazole sulphone tended to be slightly higher in the coadministered group. Although from a pharmacodynamic point of view the coadministration of MNP and OFZ may be a useful tool, the presence of OFZ did not modify the in vivo pharmacokinetic behaviour of MNP and therefore did not result in reduced milk concentrations of MNPSO2 .
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Affiliation(s)
- M Ballent
- Laboratorio de Farmacología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET-CICPBA-UNCPBA, Facultad de Ciencias Veterinarias, UNCPBA, Tandil, Argentina
| | - P Viviani
- Laboratorio de Farmacología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET-CICPBA-UNCPBA, Facultad de Ciencias Veterinarias, UNCPBA, Tandil, Argentina
| | - F Imperiale
- Laboratorio de Farmacología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET-CICPBA-UNCPBA, Facultad de Ciencias Veterinarias, UNCPBA, Tandil, Argentina
| | - P Dominguez
- Laboratorio de Farmacología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET-CICPBA-UNCPBA, Facultad de Ciencias Veterinarias, UNCPBA, Tandil, Argentina
| | - S Halwachs
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, Universität Leipzig, Leipzig, Germany
| | - H Mahnke
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, Universität Leipzig, Leipzig, Germany
| | - W Honscha
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, Universität Leipzig, Leipzig, Germany
| | - C Lanusse
- Laboratorio de Farmacología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET-CICPBA-UNCPBA, Facultad de Ciencias Veterinarias, UNCPBA, Tandil, Argentina
| | - G Virkel
- Laboratorio de Farmacología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET-CICPBA-UNCPBA, Facultad de Ciencias Veterinarias, UNCPBA, Tandil, Argentina
| | - A Lifschitz
- Laboratorio de Farmacología, Centro de Investigación Veterinaria de Tandil (CIVETAN), CONICET-CICPBA-UNCPBA, Facultad de Ciencias Veterinarias, UNCPBA, Tandil, Argentina
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20
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Manzini L, Halwachs S, Girolami F, Badino P, Honscha W, Nebbia C. Interaction of mammary bovine ABCG2 with AFB1 and its metabolites and regulation by PCB 126 in a MDCKII in vitro model. J Vet Pharmacol Ther 2017; 40:591-598. [PMID: 28198024 DOI: 10.1111/jvp.12397] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Accepted: 12/23/2016] [Indexed: 12/27/2022]
Abstract
The ATP-binding cassette efflux transporter ABCG2 plays a key role in the mammary excretion of drugs and toxins in humans and animals. Aflatoxins (AF) are worldwide contaminants of food and feed commodities, while PCB 126 is a dioxin-like PCB which may contaminate milk and dairy products. Both compounds are known human carcinogens. The interactions between AF and bovine ABCG2 (bABCG2) as well as the effects of PCB 126 on its efflux activity have been investigated by means of the Hoechst H33342 transport assay in MDCKII cells stably expressing mammary bABCG2. Both AFB1 and its main milk metabolite AFM1 showed interaction with bABCG2 even at concentrations approaching the legal limits in feed and food commodities. Moreover, PCB 126 significantly enhanced bABCG2 functional activity. Specific inhibitors of either AhR (CH233191) or ABCG2 (Ko143) were able to reverse the PCB 126-induced increase in bABCG2 transport activity, showing the specific upregulation of the efflux protein by the AhR pathway. The incubation of PCB 126-pretreated cells with AFM1 was able to substantially reverse such effect, with still unknown mechanism(s). Overall, results from this study point to AFB1 and AFM1 as likely bABCG2 substrates. The PCB 126-dependent increased activity of the transporter could enhance the ABCG2-mediated excretion into dairy milk of chemicals (i.e., drugs and toxins) potentially harmful to neonates and consumers.
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Affiliation(s)
- L Manzini
- Department of Veterinary Sciences, University of Torino, Grugliasco, Italy
| | - S Halwachs
- Institute of Veterinary Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - F Girolami
- Department of Veterinary Sciences, University of Torino, Grugliasco, Italy
| | - P Badino
- Department of Veterinary Sciences, University of Torino, Grugliasco, Italy
| | - W Honscha
- Institute of Veterinary Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, University of Leipzig, Leipzig, Germany
| | - C Nebbia
- Department of Veterinary Sciences, University of Torino, Grugliasco, Italy
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21
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Halwachs S, Schäfer I, Kneuer C, Seibel P, Honscha W. Assessment of ABCG2-mediated transport of pesticides across the rabbit placenta barrier using a novel MDCKII in vitro model. Toxicol Appl Pharmacol 2016; 305:66-74. [PMID: 27288731 DOI: 10.1016/j.taap.2016.06.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 05/03/2016] [Accepted: 06/07/2016] [Indexed: 01/09/2023]
Abstract
In humans, the ATP-binding cassette efflux transporter ABCG2 contributes to the fetoprotective barrier function of the placenta, potentially limiting the toxicity of transporter substrates to the fetus. During testing of chemicals including pesticides, developmental toxicity studies are performed in rabbit. Despite its toxicological relevance, ABCG2-mediated transport of pesticides in rabbit placenta has not been yet elucidated. We therefore generated polarized MDCK II cells expressing the ABCG2 transporter from rabbit placenta (rbABCG2) and evaluated interaction of the efflux transporter with selected insecticides, fungicides, and herbicides. The Hoechst H33342 accumulation assay indicated that 13 widely used pesticidal active substances including azoxystrobin, carbendazim, chlorpyrifos, chlormequat, diflufenican, dimethoate, dimethomorph, dithianon, ioxynil, methiocarb, propamocarb, rimsulfuron and toclofos-methyl may be rbABCG2 inhibitors and/or substrates. No such evidence was obtained for chlorpyrifos-methyl, epoxiconazole, glyphosate, imazalil and thiacloprid. Moreover, chlorpyrifos (CPF), dimethomorph, tolclofos-methyl and rimsulfuron showed concentration-dependent inhibition of H33342 excretion in rbABCG2-transduced MDCKII cells. To further evaluate the role of rbABCG2 in pesticide transport across the placenta barrier, we generated polarized MDCKII-rbABCG2 monolayers. Confocal microscopy confirmed correct localization of rbABCG2 protein in the apical plasma membrane. In transepithelial flux studies, we showed the time-dependent preferential basolateral to apical (B>A) directed transport of [(14)C] CPF across polarized MDCKII-rbABCG2 monolayers which was significantly inhibited by the ABCG2 inhibitor fumitremorgin C (FTC). Using this novel in vitro cell culture model, we altogether showed functional secretory activity of the ABCG2 transporter from rabbit placenta and identified several pesticides like the insecticide CPF as potential rbABCG2 substrates.
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Affiliation(s)
- Sandra Halwachs
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, Universität Leipzig, Leipzig, Germany
| | - Ingo Schäfer
- Molecular Cell Therapy, Center for Biotechnology and Biomedicine, Faculty of Medicine, Universität Leipzig, Leipzig, Germany
| | - Carsten Kneuer
- Federal Institute for Risk Assessment (BfR), Pesticide Safety, Max-Dohrn-Straße 8-10, D-10589 Berlin, Germany
| | - Peter Seibel
- Molecular Cell Therapy, Center for Biotechnology and Biomedicine, Faculty of Medicine, Universität Leipzig, Leipzig, Germany
| | - Walther Honscha
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, Universität Leipzig, Leipzig, Germany.
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Otero JA, García-Mateos D, de la Fuente A, Prieto JG, Álvarez AI, Merino G. Effect of bovine ABCG2 Y581S polymorphism on concentrations in milk of enrofloxacin and its active metabolite ciprofloxacin. J Dairy Sci 2016; 99:5731-5738. [PMID: 27157572 DOI: 10.3168/jds.2015-10593] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 03/24/2016] [Indexed: 01/16/2023]
Abstract
The ATP-binding cassette transporter G2 (ABCG2) is involved in the secretion of several drugs into milk. The bovine Y581S ABCG2 polymorphism increases the secretion into milk of the fluoroquinolone danofloxacin in Holstein cows. Danofloxacin and enrofloxacin are the fluoroquinolones most widely used in veterinary medicine. Both enrofloxacin (ENRO) and its active metabolite ciprofloxacin (CIPRO) reach milk at relatively high concentrations. The aim of this work was to study the effect of the bovine Y581S ABCG2 polymorphism on in vitro transport as well as on concentrations in plasma and in milk of ENRO and CIPRO. Experiments using cells overexpressing bovine ABCG2 showed the effects of ABCG2 on the transport of CIPRO, demonstrating more efficient in vitro transport of this antimicrobial by the S581 variant as compared with the Y581 variant. Animal studies administering 2.5mg/kg of ENRO subcutaneously to Y/Y 581 and Y/S 581 cows revealed that concentrations in plasma of ENRO and CIPRO were significantly lower in Y/S animals. Regardless of the genotype, the antimicrobial profile in milk after the administration of ENRO was predominantly of CIPRO. With respect to the genotype effects on the amounts of drugs present in milk, AUC0-24 values were more than 1.2 times higher in Y/S cows for ENRO and 2.2 times for CIPRO, indicating a greater capacity of Y581S to transfer these drugs into milk. These results emphasize the clinical relevance of this polymorphism as a factor affecting the concentrations in plasma and in milk of drugs of importance in veterinary medicine.
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Affiliation(s)
- J A Otero
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain; Instituto de Desarrollo Ganadero y Sanidad Animal (INDEGSAL), University of Leon, Campus de Vegazana 24071, Leon, Spain
| | - D García-Mateos
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain
| | - A de la Fuente
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain
| | - J G Prieto
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain; Instituto de Biomedicina (IBIOMED), University of Leon, Campus de Vegazana 24071, Leon, Spain
| | - A I Álvarez
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain
| | - G Merino
- Department of Biomedical Sciences-Physiology, Veterinary Faculty, University of Leon, Campus de Vegazana 24071, Leon, Spain; Instituto de Desarrollo Ganadero y Sanidad Animal (INDEGSAL), University of Leon, Campus de Vegazana 24071, Leon, Spain.
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23
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Mahnke H, Ballent M, Baumann S, Imperiale F, von Bergen M, Lanusse C, Lifschitz AL, Honscha W, Halwachs S. The ABCG2 Efflux Transporter in the Mammary Gland Mediates Veterinary Drug Secretion across the Blood-Milk Barrier into Milk of Dairy Cows. ACTA ACUST UNITED AC 2016; 44:700-8. [PMID: 26956640 DOI: 10.1124/dmd.115.068940] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 03/07/2016] [Indexed: 12/23/2022]
Abstract
In human and mice ATP-binding cassette efflux transporter ABCG2 represents the main route for active drug transport into milk. However, there is no detailed information on the role of ABCG2 in drug secretion and accumulation in milk of dairy animals. We therefore examined ABCG2-mediated drug transport in the bovine mammary gland by parallel pharmacokinetic studies in lactating Jersey cows and in vitro flux studies using the anthelmintic drug monepantel (MNP) as representative bovine ABCG2 (bABCG2) drug substrate. Animals received MNP (Zolvix, Novartis Animal Health Inc.) once (2.5 mg/kg per os) and the concentrations of MNP and the active MNP metabolite MNPSO2 were assessed by high-performance liquid chromatography. Compared with the parent drug MNP, we detected higher MNPSO2 plasma concentrations (expressed as area under the concentration-versus-time curve). Moreover, we observed MNPSO2 excretion into milk of dairy cows with a high milk-to-plasma ratio of 6.75. In mechanistic flux assays, we determined a preferential time-dependent basolateral-to-apical (B > A) MNPSO2 transport across polarized Madin-Darby canine kidney II cells-bABCG2 monolayers using liquid chromatography coupled with tandem mass spectrometry analysis. The B > A MNPSO2 transport was significantly inhibited by the ABCG2 inhibitor fumitremorgin C in bABCG2- but not in mock-transduced MDCKII cells. Additionally, the antibiotic drug enrofloxacin, the benzimidazole anthelmintic oxfendazole and the macrocyclic lactone anthelmintic moxidectin caused a reduction in the MNPSO2(B > A) net efflux. Altogether, this study indicated that therapeutically relevant drugs like the anthelmintic MNP represent substrates of the bovine mammary ABCG2 transporter and may thereby be actively concentrated in dairy milk.
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Affiliation(s)
- Hanna Mahnke
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
| | - Mariana Ballent
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
| | - Sven Baumann
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
| | - Fernanda Imperiale
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
| | - Martin von Bergen
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
| | - Carlos Lanusse
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
| | - Adrian L Lifschitz
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
| | - Walther Honscha
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
| | - Sandra Halwachs
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine (H.M., W.H., S.H.), Institute of Pharmacy, Faculty of Biosciences, Pharmacy and Psychology (S.B.), University of Leipzig, Leipzig, Germany; Laboratorio de Farmacología, Centro de Investigacion Veterinaria de Tandil, (CIVETAN, CONICET-CICPBA), Facultad de Cs. Veterinarias, UNCPBA, Tandil, Argentina (M.B., F.I., C.L., A.L.L.); Department of Molecular Systems Biology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany (S.B., M.vB.); Department of Chemistry and Bioscience, Center for Microbial Communities, University of Aalborg, Aalborg, Denmark (M.vB.)
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Effect of bovine ABCG2 polymorphism Y581S SNP on secretion into milk of enterolactone, riboflavin and uric acid. Animal 2016; 10:238-47. [DOI: 10.1017/s1751731115002141] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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25
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Halwachs S, Kneuer C, Gohlsch K, Müller M, Ritz V, Honscha W. The ABCG2 efflux transporter from rabbit placenta: Cloning and functional characterization. Placenta 2015; 38:8-15. [PMID: 26907376 DOI: 10.1016/j.placenta.2015.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 11/12/2015] [Accepted: 12/10/2015] [Indexed: 01/01/2023]
Abstract
In human placenta, the ATP-binding cassette efflux transporter ABCG2 is highly expressed in syncytiotrophoblast cells and mediates cellular excretion of various drugs and toxins. Hence, physiological ABCG2 activity substantially contributes to the fetoprotective placenta barrier function during gestation. Developmental toxicity studies are often performed in rabbit. However, despite its toxicological relevance, there is no data so far on functional ABCG2 expression in this species. Therefore, we cloned ABCG2 from placenta tissues of chinchilla rabbit. Sequencing showed 84-86% amino acid sequence identity to the orthologues from man, rat and mouse. We transduced the rabbit ABCG2 clone (rbABCG2) in MDCKII cells and stable rbABCG2 gene and protein expression was shown by RT-PCR and Western blot analysis. The rbABCG2 efflux activity was demonstrated with the Hoechst H33342 assay using the specific ABCG2 inhibitor Ko143. We further tested the effect of established human ABCG2 (hABCG2) drug substrates including the antibiotic danofloxacin or the histamine H2-receptor antagonist cimetidine on H33342 accumulation in MDCKII-rbABCG2 or -hABCG2 cells. Human therapeutic plasma concentrations of all tested drugs caused a comparable competitive inhibition of H33342 excretion in both ABCG2 clones. Altogether, we first showed functional expression of the ABCG2 efflux transporter in rabbit placenta. Moreover, our data suggest a similar drug substrate spectrum of the rabbit and the human ABCG2 efflux transporter.
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Affiliation(s)
- Sandra Halwachs
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, Universität Leipzig, An den Tierkliniken 15, D-04103 Leipzig, Germany.
| | - Carsten Kneuer
- Federal Institute for Risk Assessment (BfR), Pesticide Safety, Max-Dohrn-Straße 8-10, D-10589 Berlin, Germany.
| | - Katrin Gohlsch
- Federal Institute for Risk Assessment (BfR), Pesticide Safety, Max-Dohrn-Straße 8-10, D-10589 Berlin, Germany.
| | - Marian Müller
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, Universität Leipzig, An den Tierkliniken 15, D-04103 Leipzig, Germany.
| | - Vera Ritz
- Federal Institute for Risk Assessment (BfR), Pesticide Safety, Max-Dohrn-Straße 8-10, D-10589 Berlin, Germany.
| | - Walther Honscha
- Institute of Pharmacology, Pharmacy and Toxicology, Faculty of Veterinary Medicine, Universität Leipzig, An den Tierkliniken 15, D-04103 Leipzig, Germany.
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A model of secreting murine mammary epithelial HC11 cells comprising endogenous Bcrp/Abcg2 expression and function. Cell Biol Toxicol 2015; 31:111-20. [DOI: 10.1007/s10565-015-9298-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 03/09/2015] [Indexed: 12/30/2022]
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27
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Ahmadzai H, Tee LBG, Crowe A. Pharmacological role of efflux transporters: Clinical implications for medication use during breastfeeding. World J Pharmacol 2014; 3:153-161. [DOI: 10.5497/wjp.v3.i4.153] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Revised: 09/03/2014] [Accepted: 09/24/2014] [Indexed: 02/06/2023] Open
Abstract
The World Health Organisation recommends exclusive breastfeeding for the first six months of an infant’s life and in combination with solid food thereafter. This recommendation was introduced based on research showing numerous health benefits of breastfeeding for both the mother and the infant. However, there is always concern regarding the transfer of medications from mother to their breastfed baby via milk. Pharmacokinetic properties of a drug are usually used to predict its transferability into breast milk. Although most drugs are compatible with breastfeeding, cases of toxic drug exposure have been reported. This is thought to be due to active transport mechanisms whereby efflux transporter proteins expressed in the epithelial cells of the mammary gland actively secrete drugs into milk. An example of such efflux transporters including the breast cancer resistance protein which is strongly induced during lactation and this could result in contamination of milk with the substrates of this transporter which may place the suckling infant at risk of toxicity. Furthermore, there is little known about the substrate specificity of most efflux transporters as we have highlighted in this review. There also exists some degree of contradiction between in vivo and in vitro studies which makes it difficult to conclusively predict outcomes and drug-drug interactions.
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28
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Expression of the ABC transport proteins MDR1 (ABCB1) and BCRP (ABCG2) in bovine rumen. J Comp Physiol B 2014; 184:673-81. [DOI: 10.1007/s00360-014-0804-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 01/07/2014] [Accepted: 01/13/2014] [Indexed: 01/08/2023]
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Halwachs S, Wassermann L, Honscha W. A novel MDCKII in vitro model for assessing ABCG2-drug interactions and regulation of ABCG2 transport activity in the caprine mammary gland by environmental pollutants and pesticides. Toxicol In Vitro 2014; 28:432-41. [DOI: 10.1016/j.tiv.2013.12.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 10/29/2013] [Accepted: 12/23/2013] [Indexed: 01/16/2023]
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30
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Reply to the comment of Ana I. Alvarez and Gracia Merino regarding "Assessment of ABCG2-mediated transport of xenobiotics across the blood-milk barrier of dairy animals using a new MDCKII in vitro model" by Wassermann et al. 2013. Arch Toxicol 2013; 87:1865-7. [PMID: 24043267 DOI: 10.1007/s00204-013-1126-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Accepted: 09/05/2013] [Indexed: 10/26/2022]
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31
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Wassermann L, Halwachs S, Baumann D, Schaefer I, Seibel P, Honscha W. Assessment of ABCG2-mediated transport of xenobiotics across the blood–milk barrier of dairy animals using a new MDCKII in vitro model. Arch Toxicol 2013; 87:1671-82. [DOI: 10.1007/s00204-013-1066-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Accepted: 04/23/2013] [Indexed: 01/04/2023]
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