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Medeot AC, Boaglio AC, Salas G, Maidagan PM, Miszczuk GS, Barosso IR, Sánchez Pozzi EJ, Crocenzi FA, Roma MG. Tauroursodeoxycholate prevents estradiol 17β-d-glucuronide-induced cholestasis and endocytosis of canalicular transporters by switching off pro-cholestatic signaling pathways. Life Sci 2024; 352:122839. [PMID: 38876186 DOI: 10.1016/j.lfs.2024.122839] [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: 02/26/2024] [Revised: 06/08/2024] [Accepted: 06/11/2024] [Indexed: 06/16/2024]
Abstract
AIMS Estradiol 17β-d-glucuronide (E217G) induces cholestasis by triggering endocytosis and further intracellular retention of the canalicular transporters Bsep and Mrp2, in a cPKC- and PI3K-dependent manner, respectively. Pregnancy-induced cholestasis has been associated with E217G cholestatic effect, and is routinely treated with ursodeoxycholic acid (UDCA). Since protective mechanisms of UDCA in E217G-induced cholestasis are still unknown, we ascertained here whether its main metabolite, tauroursodeoxycholate (TUDC), can prevent endocytosis of canalicular transporters by counteracting cPKC and PI3K/Akt activation. MAIN METHODS Activation of cPKC and PI3K/Akt was evaluated in isolated rat hepatocytes by immunoblotting (assessment of membrane-bound and phosphorylated forms, respectively). Bsep/Mrp2 function was quantified in isolated rat hepatocyte couplets (IRHCs) by assessing the apical accumulation of their fluorescent substrates, CLF and GS-MF, respectively. We also studied, in isolated, perfused rat livers (IPRLs), the status of Bsep and Mrp2 transport function, assessed by the biliary excretion of TC and DNP-SG, respectively, and Bsep/Mrp2 localization by immunofluorescence. KEY FINDINGS E217G activated both cPKC- and PI3K/Akt-dependent signaling, and pretreatment with TUDC significantly attenuated these activations. In IRHCs, TUDC prevented the E217G-induced decrease in apical accumulation of CLF and GS-MF, and inhibitors of protein phosphatases failed to counteract this protection. In IPRLs, E217G induced an acute decrease in bile flow and in the biliary excretion of TC and DNP-SG, and this was prevented by TUDC. Immunofluorescence studies revealed that TUDC prevented E217G-induced Bsep/Mrp2 endocytosis. SIGNIFICANCE TUDC restores function and localization of Bsep/Mrp2 impaired by E217G, by preventing both cPKC and PI3K/Akt activation in a protein-phosphatase-independent manner.
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Affiliation(s)
- Anabela C Medeot
- Institute of Experimental Physiology (IFISE-CONICET), National University of Rosario, 2000 Rosario, Argentina
| | - Andrea C Boaglio
- Institute of Experimental Physiology (IFISE-CONICET), National University of Rosario, 2000 Rosario, Argentina
| | - Gimena Salas
- Institute of Experimental Physiology (IFISE-CONICET), National University of Rosario, 2000 Rosario, Argentina
| | - Paula M Maidagan
- Institute of Experimental Physiology (IFISE-CONICET), National University of Rosario, 2000 Rosario, Argentina
| | - Gisel S Miszczuk
- Institute of Experimental Physiology (IFISE-CONICET), National University of Rosario, 2000 Rosario, Argentina
| | - Ismael R Barosso
- Institute of Experimental Physiology (IFISE-CONICET), National University of Rosario, 2000 Rosario, Argentina
| | - Enrique J Sánchez Pozzi
- Institute of Experimental Physiology (IFISE-CONICET), National University of Rosario, 2000 Rosario, Argentina
| | - Fernando A Crocenzi
- Institute of Experimental Physiology (IFISE-CONICET), National University of Rosario, 2000 Rosario, Argentina
| | - Marcelo G Roma
- Institute of Experimental Physiology (IFISE-CONICET), National University of Rosario, 2000 Rosario, Argentina.
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Salas G, Litta AA, Medeot AC, Schuck VS, Andermatten RB, Miszczuk GS, Ciriaci N, Razori MV, Barosso IR, Sánchez Pozzi EJ, Roma MG, Basiglio CL, Crocenzi FA. NADPH oxidase-generated reactive oxygen species are involved in estradiol 17ß-d-glucuronide-induced cholestasis. Biochimie 2024; 223:41-53. [PMID: 38608750 DOI: 10.1016/j.biochi.2024.04.002] [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: 01/08/2024] [Revised: 04/04/2024] [Accepted: 04/08/2024] [Indexed: 04/14/2024]
Abstract
The endogenous metabolite of estradiol, estradiol 17β-D-glucuronide (E17G), is considered the main responsible of the intrahepatic cholestasis of pregnancy. E17G alters the activity of canalicular transporters through a signaling pathway-dependent cellular internalization, phenomenon that was attributed to oxidative stress in different cholestatic conditions. However, there are no reports involving oxidative stress in E17G-induced cholestasis, representing this the aim of our work. Using polarized hepatocyte cultures, we showed that antioxidant compounds prevented E17G-induced Mrp2 activity alteration, being this alteration equally prevented by the NADPH oxidase (NOX) inhibitor apocynin. The model antioxidant N-acetyl-cysteine prevented, in isolated and perfused rat livers, E17G-induced impairment of bile flow and Mrp2 activity, thus confirming the participation of reactive oxygen species (ROS) in this cholestasis. In primary cultured hepatocytes, pretreatment with specific inhibitors of ERK1/2 and p38MAPK impeded E17G-induced ROS production; contrarily, NOX inhibition did not affect ERK1/2 and p38MAPK phosphorylation. Both, knockdown of p47phox by siRNA and preincubation with apocynin in sandwich-cultured rat hepatocytes significantly prevented E17G-induced internalization of Mrp2, suggesting a crucial role for NOX in this phenomenon. Concluding, E17G-induced cholestasis is partially mediated by NOX-generated ROS through internalization of canalicular transporters like Mrp2, being ERK1/2 and p38MAPK necessary for NOX activation.
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Affiliation(s)
- Gimena Salas
- Instituto de Fisiología Experimental (IFISE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Departamento de Ciencias Fisiológicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Argentina
| | - Alen A Litta
- Instituto de Fisiología Experimental (IFISE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Departamento de Ciencias Fisiológicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Argentina
| | - Anabela C Medeot
- Instituto de Fisiología Experimental (IFISE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Departamento de Ciencias Fisiológicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Argentina
| | - Virginia S Schuck
- Instituto de Fisiología Experimental (IFISE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Departamento de Ciencias Fisiológicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Argentina
| | - Romina B Andermatten
- Instituto de Fisiología Experimental (IFISE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Departamento de Ciencias Fisiológicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Argentina
| | - Gisel S Miszczuk
- Instituto de Fisiología Experimental (IFISE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Departamento de Ciencias Fisiológicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Argentina
| | - Nadia Ciriaci
- Instituto de Fisiología Experimental (IFISE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Departamento de Ciencias Fisiológicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Argentina
| | - Ma Valeria Razori
- Instituto de Fisiología Experimental (IFISE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Departamento de Ciencias Fisiológicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Argentina
| | - Ismael R Barosso
- Instituto de Fisiología Experimental (IFISE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Departamento de Ciencias Fisiológicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Argentina
| | - Enrique J Sánchez Pozzi
- Instituto de Fisiología Experimental (IFISE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Departamento de Ciencias Fisiológicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Argentina
| | - Marcelo G Roma
- Instituto de Fisiología Experimental (IFISE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Departamento de Ciencias Fisiológicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Argentina
| | - Cecilia L Basiglio
- Instituto de Fisiología Experimental (IFISE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Departamento de Ciencias Fisiológicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Argentina
| | - Fernando A Crocenzi
- Instituto de Fisiología Experimental (IFISE), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Departamento de Ciencias Fisiológicas, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Argentina.
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3
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Hedya S, Charlton A, Leitch AC, Aljehani FA, Pinker B, Wright MC, Abdelghany TM. The methylimidazolium ionic liquid M8OI is a substrate for OCT1 and p-glycoprotein-1 in rat. Toxicol In Vitro 2023; 88:105550. [PMID: 36603777 DOI: 10.1016/j.tiv.2022.105550] [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: 08/24/2022] [Revised: 12/29/2022] [Accepted: 12/30/2022] [Indexed: 01/03/2023]
Abstract
The methylimidazolium ionic liquid M8OI was recently found to be present in both the environment and man. In this study, M8OI disposition and toxicity were examined in an established rat progenitor-hepatocyte model. The progenitor B-13 cell was approx. 13 fold more sensitive to the toxic effects of M8OI than the hepatocyte B-13/H cell. However, this difference in sensitivity was not associated with a difference in metabolic capacities. M8OI toxicity was significantly decreased in a dose-dependent manner by co-addition of the OCT1 (SLC22A1) inhibitor clonidine, but not by OCT2 or OCT3 inhibitors in B-13 cells. M8OI toxicity was also dose-dependently increased by the co-addition of p-glycoprotein-1 (ABCB1B, multi drug resistant protein 1 (MDR1)) substrates/inhibitors. Excretion of B-13-loaded fluorophore Hoechst 33342 was also inhibited by the p-glycoproteins substrate cyclosporin A and by M8OI in a dose-dependent manner. Comparing levels of OCT and p-glycoprotein transcripts and proteins in B-13 and B-13/H cells suggest that the lower sensitivity to M8OI in B-13/H cells is predominantly associated with their higher expression of p-glycoprotein-1. These data together therefore suggest that a determinant in M8OI toxicity in rats is the expression and activity of the p-glycoprotein-1 transporter.
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Affiliation(s)
- Shireen Hedya
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., Cairo 11562, Egypt; Institute of Translation and Clinical Research, Newcastle University, Newcastle Upon Tyne NE2 4AA, United Kingdom
| | - Alex Charlton
- School of Natural and Environmental Sciences, Bedson Building, Newcastle University, NE1 8QB, United Kingdom
| | - Alistair C Leitch
- Institute of Translation and Clinical Research, Newcastle University, Newcastle Upon Tyne NE2 4AA, United Kingdom
| | - Fahad A Aljehani
- Institute of Translation and Clinical Research, Newcastle University, Newcastle Upon Tyne NE2 4AA, United Kingdom; Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Benjamin Pinker
- Institute of Translation and Clinical Research, Newcastle University, Newcastle Upon Tyne NE2 4AA, United Kingdom
| | - Matthew C Wright
- Institute of Translation and Clinical Research, Newcastle University, Newcastle Upon Tyne NE2 4AA, United Kingdom.
| | - Tarek M Abdelghany
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., Cairo 11562, Egypt; Institute of Translation and Clinical Research, Newcastle University, Newcastle Upon Tyne NE2 4AA, United Kingdom; School of Biomedical, Nutritional and Sport Sciences, Faculty of Medical Sciences, Newcastle University, Newcastle Upon Tyne NE24HH, United Kingdom
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4
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Wang J, Wen J, Ma X, Yang J, Zhang Z, Xie S, Wei S, Jing M, Li H, Lang L, Zhou X, Zhao Y. Validation of MAPK signalling pathway as a key role of paeoniflorin in the treatment of intrahepatic cholestasis of pregnancy based on network pharmacology and metabolomics. Eur J Pharmacol 2022; 935:175331. [DOI: 10.1016/j.ejphar.2022.175331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 10/13/2022] [Accepted: 10/13/2022] [Indexed: 11/30/2022]
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Vilas-Boas V, Gijbels E, Jonckheer J, De Waele E, Vinken M. Cholestatic liver injury induced by food additives, dietary supplements and parenteral nutrition. ENVIRONMENT INTERNATIONAL 2020; 136:105422. [PMID: 31884416 DOI: 10.1016/j.envint.2019.105422] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/05/2019] [Accepted: 12/13/2019] [Indexed: 06/10/2023]
Abstract
Cholestasis refers to the accumulation of toxic levels of bile acids in the liver due to defective bile secretion. This pathological situation can be triggered by drugs, but also by ingredients contained in food, food supplements and parenteral nutrition. This paper provides an overview of the current knowledge on cholestatic injury associated with such ingredients, with particular emphasis on the underlying mechanisms of toxicity.
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Affiliation(s)
- Vânia Vilas-Boas
- Department of In Vitro Toxicology and Dermato-Cosmetology, Vrije Universiteit Brussel, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Eva Gijbels
- Department of In Vitro Toxicology and Dermato-Cosmetology, Vrije Universiteit Brussel, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Joop Jonckheer
- Department of Intensive Care, UZ Brussel, Laarbeeklaan 101, 1090 Brussels, Belgium
| | - Elisabeth De Waele
- Department of Intensive Care, UZ Brussel, Laarbeeklaan 101, 1090 Brussels, Belgium
| | - Mathieu Vinken
- Department of In Vitro Toxicology and Dermato-Cosmetology, Vrije Universiteit Brussel, Laarbeeklaan 103, 1090 Brussels, Belgium.
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6
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Andermatten RB, Ciriaci N, Schuck VS, Di Siervi N, Razori MV, Miszczuk GS, Medeot AC, Davio CA, Crocenzi FA, Roma MG, Barosso IR, Sánchez Pozzi EJ. Sphingosine 1-phosphate receptor 2/adenylyl cyclase/protein kinase A pathway is involved in taurolithocholate-induced internalization of Abcc2 in rats. Arch Toxicol 2019; 93:2279-2294. [PMID: 31300867 DOI: 10.1007/s00204-019-02514-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 07/04/2019] [Indexed: 01/05/2023]
Abstract
Taurolithocholate (TLC) is a cholestatic bile salt that induces disinsertion of the canalicular transporter Abcc2 (Mrp2, multidrug resistance-associated protein 2). This internalization is mediated by different intracellular signaling proteins such as PI3K, PKCε and MARCK but the initial receptor of TLC remains unknown. A few G protein-coupled receptors interact with bile salts in hepatocytes. Among them, sphingosine-1 phosphate receptor 2 (S1PR2) represents a potential initial receptor for TLC. The aim of this study was to evaluate the role of this receptor and its downstream effectors in the impairment of Abcc2 function induced by TLC. In vitro, S1PR2 inhibition by JTE-013 or its knockdown by small interfering RNA partially prevented the decrease in Abcc2 activity induced by TLC. Moreover, adenylyl cyclase (AC)/PKA and PI3K/Akt inhibition partially prevented TLC effect on canalicular transporter function. TLC produced PKA and Akt activation, which were blocked by JTE-013 and AC inhibitors, connecting S1PR2/AC/PKA and PI3K/Akt in a same pathway. In isolated perfused rat liver, injection of TLC triggered endocytosis of Abcc2 that was accompanied by a sustained decrease in the bile flow and the biliary excretion of the Abcc2 substrate dinitrophenyl-glutathione until the end of the perfusion period. S1PR2 or AC inhibition did not prevent the initial decay, but they accelerated the recovery of these parameters and the reinsertion of Abcc2 into the canalicular membrane. In conclusion, S1PR2 and the subsequent activation of AC, PKA, PI3K and Akt is partially responsible for the cholestatic effects of TLC through sustained internalization of Abcc2.
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Affiliation(s)
- Romina Belén Andermatten
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Instituto de Fisiología Experimental (IFISE) (CONICET-U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina
| | - Nadia Ciriaci
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Instituto de Fisiología Experimental (IFISE) (CONICET-U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina
| | - Virginia Soledad Schuck
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Instituto de Fisiología Experimental (IFISE) (CONICET-U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina
| | - Nicolás Di Siervi
- Facultad de Farmacia y Bioquímica, Instituto de Investigaciones Farmacológicas (ININFA), Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - María Valeria Razori
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Instituto de Fisiología Experimental (IFISE) (CONICET-U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina
| | - Gisel Sabrina Miszczuk
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Instituto de Fisiología Experimental (IFISE) (CONICET-U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina
| | - Anabela Carolina Medeot
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Instituto de Fisiología Experimental (IFISE) (CONICET-U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina
| | - Carlos Alberto Davio
- Facultad de Farmacia y Bioquímica, Instituto de Investigaciones Farmacológicas (ININFA), Universidad de Buenos Aires, CONICET, Buenos Aires, Argentina
| | - Fernando Ariel Crocenzi
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Instituto de Fisiología Experimental (IFISE) (CONICET-U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina
| | - Marcelo Gabriel Roma
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Instituto de Fisiología Experimental (IFISE) (CONICET-U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina
| | - Ismael Ricardo Barosso
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Instituto de Fisiología Experimental (IFISE) (CONICET-U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina
| | - Enrique Juan Sánchez Pozzi
- Facultad de Ciencias Bioquímicas y Farmacéuticas, Instituto de Fisiología Experimental (IFISE) (CONICET-U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina.
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7
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Roma MG, Barosso IR, Miszczuk GS, Crocenzi FA, Pozzi EJS. Dynamic Localization of Hepatocellular Transporters: Role in Biliary Excretion and Impairment in Cholestasis. Curr Med Chem 2019; 26:1113-1154. [DOI: 10.2174/0929867325666171205153204] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 09/06/2017] [Accepted: 09/07/2017] [Indexed: 12/25/2022]
Abstract
Bile flow generation is driven by the vectorial transfer of osmotically active compounds from sinusoidal blood into a confined space, the bile canaliculus. Hence, localization of hepatocellular transporters relevant to bile formation is crucial for bile secretion. Hepatocellular transporters are localized either in the plasma membrane or in recycling endosomes, from where they can be relocated to the plasma membrane on demand, or endocytosed when the demand decreases. The balance between endocytic internalization/ exocytic targeting to/from this recycling compartment is therefore the main determinant of the hepatic capability to generate bile, and to dispose endo- and xenobiotics. Furthermore, the exacerbated endocytic internalization is a common pathomechanisms in both experimental and human cholestasis; this results in bile secretory failure and, eventually, posttranslational transporter downregulation by increased degradation. This review summarizes the proposed structural mechanisms accounting for this pathological condition (e.g., alteration of function, localization or expression of F-actin or F-actin/transporter cross-linking proteins, and switch to membrane microdomains where they can be readily endocytosed), and the mediators implicated (e.g., triggering of “cholestatic” signaling transduction pathways). Lastly, we discussed the efficacy to counteract the cholestatic failure induced by transporter internalization of a number of therapeutic experimental approaches based upon the use of compounds that trigger exocytic targetting of canalicular transporters (e.g., cAMP, tauroursodeoxycholate). This therapeutics may complement treatments aimed to transcriptionally improve transporter expression, by affording proper localization and membrane stability to the de novo synthesized transporters.
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Affiliation(s)
- Marcelo G. Roma
- Instituto de Fisiologia Experimental (IFISE) - Facultad de Ciencias Bioquimicas y Farmaceuticas (CONICET - U.N.R.), S2002LRL, Rosario, Argentina
| | - Ismael R. Barosso
- Instituto de Fisiologia Experimental (IFISE) - Facultad de Ciencias Bioquimicas y Farmaceuticas (CONICET - U.N.R.), S2002LRL, Rosario, Argentina
| | - Gisel S. Miszczuk
- Instituto de Fisiologia Experimental (IFISE) - Facultad de Ciencias Bioquimicas y Farmaceuticas (CONICET - U.N.R.), S2002LRL, Rosario, Argentina
| | - Fernando A. Crocenzi
- Instituto de Fisiologia Experimental (IFISE) - Facultad de Ciencias Bioquimicas y Farmaceuticas (CONICET - U.N.R.), S2002LRL, Rosario, Argentina
| | - Enrique J. Sánchez Pozzi
- Instituto de Fisiologia Experimental (IFISE) - Facultad de Ciencias Bioquimicas y Farmaceuticas (CONICET - U.N.R.), S2002LRL, Rosario, Argentina
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8
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Catron TR, Swank A, Wehmas LC, Phelps D, Keely SP, Brinkman NE, McCord J, Singh R, Sobus J, Wood CE, Strynar M, Wheaton E, Tal T. Microbiota alter metabolism and mediate neurodevelopmental toxicity of 17β-estradiol. Sci Rep 2019; 9:7064. [PMID: 31068624 PMCID: PMC6506524 DOI: 10.1038/s41598-019-43346-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 04/18/2019] [Indexed: 02/07/2023] Open
Abstract
Estrogenic chemicals are widespread environmental contaminants associated with diverse health and ecological effects. During early vertebrate development, estrogen receptor signaling is critical for many different physiologic responses, including nervous system function. Recently, host-associated microbiota have been shown to influence neurodevelopment. Here, we hypothesized that microbiota may biotransform exogenous 17-βestradiol (E2) and modify E2 effects on swimming behavior. Colonized zebrafish were continuously exposed to non-teratogenic E2 concentrations from 1 to 10 days post-fertilization (dpf). Changes in microbial composition and predicted metagenomic function were evaluated. Locomotor activity was assessed in colonized and axenic (microbe-free) zebrafish exposed to E2 using a standard light/dark behavioral assay. Zebrafish tissue was collected for chemistry analyses. While E2 exposure did not alter microbial composition or putative function, colonized E2-exposed larvae showed reduced locomotor activity in the light, in contrast to axenic E2-exposed larvae, which exhibited normal behavior. Measured E2 concentrations were significantly higher in axenic relative to colonized zebrafish. Integrated peak area for putative sulfonated and glucuronidated E2 metabolites showed a similar trend. These data demonstrate that E2 locomotor effects in the light phase are dependent on the presence of microbiota and suggest that microbiota influence chemical E2 toxicokinetics. More broadly, this work supports the concept that microbial colonization status may influence chemical toxicity.
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Affiliation(s)
- Tara R Catron
- Oak Ridge Institute for Science and Education, Oak Ridge, TN, USA
| | | | | | - Drake Phelps
- Oak Ridge Institute for Science and Education, Oak Ridge, TN, USA
| | | | | | - James McCord
- Oak Ridge Institute for Science and Education, Oak Ridge, TN, USA
| | - Randolph Singh
- Oak Ridge Institute for Science and Education, Oak Ridge, TN, USA
| | - Jon Sobus
- U.S. EPA/ORD/NERL/EMMD, RTP, NC, USA
| | - Charles E Wood
- U.S. EPA/ORD/NHEERL/ISTD, RTP, NC, USA
- Boehringer Ingelheim Pharmaceuticals Inc., Ridgefield, CT, USA
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9
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Miszczuk GS, Barosso IR, Larocca MC, Marrone J, Marinelli RA, Boaglio AC, Sánchez Pozzi EJ, Roma MG, Crocenzi FA. Mechanisms of canalicular transporter endocytosis in the cholestatic rat liver. Biochim Biophys Acta Mol Basis Dis 2018; 1864:1072-1085. [DOI: 10.1016/j.bbadis.2018.01.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 01/12/2018] [Accepted: 01/16/2018] [Indexed: 01/03/2023]
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10
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Activation of insulin-like growth factor 1 receptor participates downstream of GPR30 in estradiol-17β-D-glucuronide-induced cholestasis in rats. Arch Toxicol 2017; 92:729-744. [PMID: 29090346 DOI: 10.1007/s00204-017-2098-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 10/17/2017] [Indexed: 01/01/2023]
Abstract
Estradiol-17β-D-glucuronide (E17G), through the activation of different signaling proteins, induces acute endocytic internalization of canalicular transporters in rat, including multidrug resistance-associated protein 2 (Abcc2) and bile salt export pump (Abcb11), generating cholestasis. Insulin-like growth factor 1 receptor (IGF-1R) is a membrane-bound tyrosine kinase receptor that can potentially interact with proteins activated by E17G. The aim of this study was to analyze the potential role of IGF-1R in the effects of E17G in isolated perfused rat liver (IPRL) and isolated rat hepatocyte couplets. In vitro, IGF-1R inhibition by tyrphostin AG1024 (TYR, 100 nM), or its knock-down with siRNA, strongly prevented E17G-induced impairment of Abcc2 and Abcb11 function and localization. The protection by TYR was not additive to that produced by wortmannin (PI3K inhibitor, 100 nM), and both protections share the same dependency on microtubule integrity, suggesting that IGF-1R shared the signaling pathway of PI3K/Akt. Further analysis of the activation of Akt and IGF-1R induced by E17G indicated a sequence of activation GPR30-IGF-1R-PI3K/Akt. In IPRL, an intraportal injection of E17G triggered endocytosis of Abcc2 and Abcb11, and this was accompanied by a sustained decrease in the bile flow and the biliary excretion of Abcc2 and Abcb11 substrates. TYR did not prevent the initial decay, but it greatly accelerated the recovery to normality of these parameters and the reinsertion of transporters into the canalicular membrane. In conclusion, the activation of IGF-1R is a key factor in the alteration of canalicular transporter function and localization induced by E17G, and its activation follows that of GPR30 and precedes that of PI3K/Akt.
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11
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Li X, Liu R, Yang J, Sun L, Zhang L, Jiang Z, Puri P, Gurley EC, Lai G, Tang Y, Huang Z, Pandak WM, Hylemon PB, Zhou H. The role of long noncoding RNA H19 in gender disparity of cholestatic liver injury in multidrug resistance 2 gene knockout mice. Hepatology 2017; 66:869-884. [PMID: 28271527 PMCID: PMC5570619 DOI: 10.1002/hep.29145] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 02/11/2017] [Accepted: 03/02/2017] [Indexed: 12/31/2022]
Abstract
UNLABELLED The multidrug resistance 2 knockout (Mdr2-/- ) mouse is a well-established model of cholestatic cholangiopathies. Female Mdr2-/- mice develop more severe hepatobiliary damage than male Mdr2-/- mice, which is correlated with a higher proportion of taurocholate in the bile. Although estrogen has been identified as an important player in intrahepatic cholestasis, the underlying molecular mechanisms of gender-based disparity of cholestatic injury remain unclear. The long noncoding RNA H19 is an imprinted, maternally expressed, and estrogen-targeted gene, which is significantly induced in human fibrotic/cirrhotic liver and bile duct-ligated mouse liver. However, whether aberrant expression of H19 accounts for gender-based disparity of cholestatic injury in Mdr2-/- mice remains unknown. The current study demonstrated that H19 was markedly induced (∼200-fold) in the livers of female Mdr2-/- mice at advanced stages of cholestasis (100 days old) but not in age-matched male Mdr2-/- mice. During the early stages of cholestasis, H19 expression was minimal. We further determined that hepatic H19 was mainly expressed in cholangiocytes, not hepatocytes. Both taurocholate and estrogen significantly activated the extracellular signal-regulated kinase 1/2 signaling pathway and induced H19 expression in cholangiocytes. Knocking down H19 not only significantly reduced taurocholate/estrogen-induced expression of fibrotic genes and sphingosine 1-phosphate receptor 2 in cholangiocytes but also markedly reduced cholestatic injury in female Mdr2-/- mice. Furthermore, expression of small heterodimer partner was substantially inhibited at advanced stages of liver fibrosis, which was reversed by H19 short hairpin RNA in female Mdr2-/- mice. Similar findings were obtained in human primary sclerosing cholangitis liver samples. CONCLUSION H19 plays a critical role in the disease progression of cholestasis and represents a key factor that causes the gender disparity of cholestatic liver injury in Mdr2-/- mice. (Hepatology 2017;66:869-884).
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Affiliation(s)
- Xiaojiaoyang Li
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu, China.,Department of Microbiology and Immunology, Virginia Commonwealth University, and McGuire Veterans Affairs Medical Center, Richmond, VA
| | - Runping Liu
- Department of Microbiology and Immunology, Virginia Commonwealth University, and McGuire Veterans Affairs Medical Center, Richmond, VA.,Guangdong Pharmaceutical University, Guangzhou, China
| | - Jing Yang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu, China.,Department of Microbiology and Immunology, Virginia Commonwealth University, and McGuire Veterans Affairs Medical Center, Richmond, VA
| | - Lixin Sun
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu, China.,Department of Microbiology and Immunology, Virginia Commonwealth University, and McGuire Veterans Affairs Medical Center, Richmond, VA
| | - Luyong Zhang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu, China.,Guangdong Pharmaceutical University, Guangzhou, China
| | - Zhenzhou Jiang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Puneet Puri
- Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Emily C Gurley
- Department of Microbiology and Immunology, Virginia Commonwealth University, and McGuire Veterans Affairs Medical Center, Richmond, VA
| | - Guanhua Lai
- Department of Pathology, Medical College of Virginia Campus, Virginia Commonwealth University, Richmond, VA
| | - Yuping Tang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resource Industrialization and Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing, China
| | - Zhiming Huang
- Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - William M Pandak
- Department of Microbiology and Immunology, Virginia Commonwealth University, and McGuire Veterans Affairs Medical Center, Richmond, VA.,Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Phillip B Hylemon
- Department of Microbiology and Immunology, Virginia Commonwealth University, and McGuire Veterans Affairs Medical Center, Richmond, VA.,Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA
| | - Huiping Zhou
- Department of Microbiology and Immunology, Virginia Commonwealth University, and McGuire Veterans Affairs Medical Center, Richmond, VA.,Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA.,Department of Gastroenterology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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12
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Hepatic effects of tartrazine (E 102) after systemic exposure are independent of oestrogen receptor interactions in the mouse. Toxicol Lett 2017; 273:55-68. [PMID: 28356238 PMCID: PMC5429395 DOI: 10.1016/j.toxlet.2017.03.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 03/23/2017] [Accepted: 03/24/2017] [Indexed: 12/19/2022]
Abstract
Systemic exposure to tartrazine results in hepatic periportal recruitment of inflammatory cells, increased serum alkaline phosphatase activity and mild hepatic periportal fibrosis. Tartrazine, its sulphonated metabolites and a common contaminant of the food additive do not interact with murine oestrogen receptors. Systemic exposure does not have an oestrogenic effect in mouse in vivo. Tartrazine, its sulphonated metabolites and a common contaminant of the food additive inhibited sulphotransferase, which may account for its hepatic effects after systemic exposure. The hepatic effects of tartrazine do not occur in mice – with or without co-administration of alcohol – after oral exposure to tartrazine.
Tartrazine is a food colour that activates the transcriptional function of the human oestrogen receptor alpha in an in vitro cell model. Since oestrogens are cholestatic, we hypothesised tartrazine will cause periportal injury to the liver in vivo. To test this hypothesis, tartrazine was initially administered systemically to mice resulting in a periportal recruitment of inflammatory cells, increased serum alkaline phosphatase activity and mild periportal fibrosis. To determine whether an oestrogenic effect may be a key event in this response, tartrazine, sulphonated metabolites and a food additive contaminant were screened for their ability to interact with murine oestrogen receptors. In all cases, there were no interactions as agonists or antagonists and further, no oestrogenicity was observed with tartrazine in an in vivo uterine growth assay. To examine the relevance of the hepatic effects of tartrazine to its use as a food additive, tartrazine was orally administered to transgenic NF-κB-Luc mice. Pre- and concurrent oral treatment with alcohol was incorporated given its potential to promote gut permeability and hepatic inflammation. Tartrazine alone induced NF- κB activities in the colon and liver but there was no periportal recruitment of inflammatory cells or fibrosis. Tartrazine, its sulphonated metabolites and the contaminant inhibited sulphotransferase activities in murine hepatic S9 extracts. Given the role of sulfotransferases in bile acid excretion, the initiating event giving rise to periportal inflammation and subsequent hepatic pathology through systemic tartrazine exposure is therefore potentially associated an inhibition of bile acid sulphation and excretion and not on oestrogen receptor-mediated transcriptional function. However, these effects were restricted to systemic exposures to tartrazine and did not occur to any significant effect after oral exposure.
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13
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Song Z, Shi Q. The Interaction of PPARα and CYP7B1 with ERα, β Impacted the Occurrence and Development of Intrahepatic Cholestasis in Pregnant Rats. Reprod Sci 2016; 24:627-634. [PMID: 27628953 DOI: 10.1177/1933719116667223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Intrahepatic cholestasis of pregnancy (ICP) is a disorder of bile acid (BA) synthesis, excretion, and metabolism, with systemic accumulation of BAs, which can lead to prematurity, fetal distress, and intrauterine death. Here, we investigate the expression of peroxisome proliferator-activated receptor alpha and cytochrome P450 oxysterol 7alpha-hydroxylase by exposing to 17α-ethynylestradiol with or without the estrogen receptor signaling pathway in pregnant rats with intrahepatic cholestasis. In vivo and in vitro evidences showed that estrogen receptor alpha (ERα) may be the key point of occurrence and development of intrahepatic cholestasis in pregnant rats. Besides, the abnormalities in genes could be reversed by ERα small interfering RNA. Our findings provide the ERα-centered hypothesis on the mechanisms of ICP. New perspectives are emerging for the treatment of estrogen-induced hepatic complication.
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Affiliation(s)
- Zhaoyi Song
- 1 Department of Obstetrics and Gynecology, Ninth School of Clinical Medicine, Peking University, Beijing, China
| | - Qingyun Shi
- 2 Department of Obstetrics and Gynecology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
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14
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Barosso IR, Zucchetti AE, Miszczuk GS, Boaglio AC, Taborda DR, Roma MG, Crocenzi FA, Sánchez Pozzi EJ. EGFR participates downstream of ERα in estradiol-17β-D-glucuronide-induced impairment of Abcc2 function in isolated rat hepatocyte couplets. Arch Toxicol 2015; 90:891-903. [PMID: 25813982 DOI: 10.1007/s00204-015-1507-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 03/16/2015] [Indexed: 11/28/2022]
Abstract
Estradiol-17β-D-glucuronide (E17G) induces acute endocytic internalization of canalicular transporters, including multidrug resistance-associated protein 2 (Abcc2) in rat, generating cholestasis. Several proteins organized in at least two different signaling pathways are involved in E17G cholestasis: one pathway involves estrogen receptor alpha (ERα), Ca(2+)-dependent protein kinase C and p38-mitogen activated protein kinase, and the other pathway involves GPR30, PKA, phosphoinositide 3-kinase/AKT and extracellular signal-related kinase 1/2. EGF receptor (EGFR) can potentially participate in both pathways since it interacts with GPR30 and ERα. Hence, the aim of this study was to analyze the potential role of this receptor and its downstream effectors, members of the Src family kinases in E17G-induced cholestasis. In vitro, EGFR inhibition by Tyrphostin (Tyr), Cl-387785 or its knockdown with siRNA strongly prevented E17G-induced impairment of Abcc2 function and localization. Activation of EGFR was necessary but not sufficient to impair the canalicular transporter function, whereas the simultaneous activation of EGFR and GPR30 could impair Abcc2 transport. The protection of Tyr was not additive to that produced by the ERα inhibitor ICI neither with that produced by Src kinase inhibitors, suggesting that EGFR shared the signaling pathway of ERα and Src. Further analysis of ERα, EGFR and Src activations induced by E17G, demonstrated that ERα activation precedes that of EGFR and EGFR activation precedes that of Src. In conclusion, activation of EGFR is a key factor in the alteration of canalicular transporter function and localization induced by E17G and it occurs before that of Src and after that of ERα.
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Affiliation(s)
- Ismael R Barosso
- Instituto de Fisiología Experimental (IFISE), Facultad de Ciencias Bioquímicas y Farmacéuticas (CONICET - U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina
| | - Andrés E Zucchetti
- Instituto de Fisiología Experimental (IFISE), Facultad de Ciencias Bioquímicas y Farmacéuticas (CONICET - U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina
| | - Gisel S Miszczuk
- Instituto de Fisiología Experimental (IFISE), Facultad de Ciencias Bioquímicas y Farmacéuticas (CONICET - U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina
| | - Andrea C Boaglio
- Instituto de Fisiología Experimental (IFISE), Facultad de Ciencias Bioquímicas y Farmacéuticas (CONICET - U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina
| | - Diego R Taborda
- Instituto de Fisiología Experimental (IFISE), Facultad de Ciencias Bioquímicas y Farmacéuticas (CONICET - U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina
| | - Marcelo G Roma
- Instituto de Fisiología Experimental (IFISE), Facultad de Ciencias Bioquímicas y Farmacéuticas (CONICET - U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina
| | - Fernando A Crocenzi
- Instituto de Fisiología Experimental (IFISE), Facultad de Ciencias Bioquímicas y Farmacéuticas (CONICET - U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina
| | - Enrique J Sánchez Pozzi
- Instituto de Fisiología Experimental (IFISE), Facultad de Ciencias Bioquímicas y Farmacéuticas (CONICET - U.N.R.), Suipacha 570, S2002LRL, Rosario, Argentina.
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15
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Anwer MS. Role of protein kinase C isoforms in bile formation and cholestasis. Hepatology 2014; 60:1090-7. [PMID: 24700589 PMCID: PMC4141907 DOI: 10.1002/hep.27088] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 02/13/2014] [Indexed: 12/11/2022]
Abstract
Transhepatic solute transport provides the osmotic driving force for canalicular bile formation. Choleretic and cholestatic agents affect bile formation, in part, by altering plasma membrane localizations of transporters involved in bile formation. These short-term dynamic changes in transporter location are highly regulated posttranslational events requiring various cellular signaling pathways. Interestingly, both choleretic and cholestatic agents activate the same intracellular signaling kinases, such as phosphoinositide-3-kinase (PI3K), protein kinase C (PKC), and mitogen-activated protein kinase (MAPK). An emerging theme is that choleretic and cholestatic effects may be mediated by different isoforms of these kinases. This is most evident for PKC-mediated regulation of plasma membrane localization of Na+-taurocholate cotransporting polypeptide (NTCP) and multidrug resistance-associated protein 2 (MRP2) by conventional PKCα (cPKCα), novel PKCδ (nPKCδ), nPKCε, and atypical PKCζ (aPKCζ). aPKCζ may mediate choleretic effects by inserting NTCP into the plasma membrane, and nPKCε may mediate cholestatic effects by retrieving MRP2 from the plasma membrane. On the other hand, cPKCα and nPKCδ may be involved in choleretic, cholestatic, and anticholestatic effects by inserting, retrieving, and inhibiting retrieval of transporters, respectively. The effects of PKC isoforms may be mediated by phosphorylation of the transporters, actin binding proteins (radixin and myristoylated alanine-rich C kinase substrate), and Rab proteins. Human NTCP plays an important role in the entry of hepatitis B and D viruses into hepatocytes and consequent infection. Thus, PKCs, by regulating NTCP trafficking, may also play an important role in hepatic viral infections.
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Affiliation(s)
- M Sawkat Anwer
- Department of Biomedical Sciences, Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA
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16
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Sharanek A, Azzi PBE, Al-Attrache H, Savary CC, Humbert L, Rainteau D, Guguen-Guillouzo C, Guillouzo A. Different dose-dependent mechanisms are involved in early cyclosporine a-induced cholestatic effects in hepaRG cells. Toxicol Sci 2014; 141:244-53. [PMID: 24973091 DOI: 10.1093/toxsci/kfu122] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Mechanisms involved in drug-induced cholestasis in humans remain poorly understood. Although cyclosporine A (CsA) and tacrolimus (FK506) share similar immunosuppressive properties, only CsA is known to cause dose-dependent cholestasis. Here, we have investigated the mechanisms implicated in early cholestatic effects of CsA using the differentiated human HepaRG cell line. Inhibition of efflux and uptake of taurocholate was evidenced as early as 15 min and 1 h respectively after addition of 10μM CsA; it peaked at around 2 h and was reversible. These early effects were associated with generation of oxidative stress and deregulation of cPKC pathway. At higher CsA concentrations (≥50μM) alterations of efflux and uptake activities were enhanced and became irreversible, pericanalicular F-actin microfilaments were disorganized and bile canaliculi were constricted. These changes were associated with induction of endoplasmic reticulum stress that preceded generation of oxidative stress. Concentration-dependent changes were observed on total bile acid disposition, which were characterized by an increase and a decrease in culture medium and cells, respectively, after a 24-h treatment with CsA. Accordingly, genes encoding hepatobiliary transporters and bile acid synthesis enzymes were differently deregulated depending on CsA concentration. By contrast, FK506 induced limited effects only at 25-50μM and did not alter bile canaliculi. Our data demonstrate involvement of different concentration-dependent mechanisms in CsA-induced cholestasis and point out a critical role of endoplasmic reticulum stress in the occurrence of the major cholestatic features.
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Affiliation(s)
- Ahmad Sharanek
- Inserm UMR991, Foie, Métabolisme et Cancer, Rennes, France Université de Rennes 1, Rennes, France
| | - Pamela Bachour-El Azzi
- Inserm UMR991, Foie, Métabolisme et Cancer, Rennes, France Université de Rennes 1, Rennes, France
| | - Houssein Al-Attrache
- Inserm UMR991, Foie, Métabolisme et Cancer, Rennes, France Université de Rennes 1, Rennes, France
| | - Camille C Savary
- Inserm UMR991, Foie, Métabolisme et Cancer, Rennes, France Université de Rennes 1, Rennes, France
| | - Lydie Humbert
- ERL Inserm U1157/UMR7203, Faculté de Medecine Pierre et Marie Curie, Site Saint Antoine, Paris, France
| | - Dominique Rainteau
- ERL Inserm U1157/UMR7203, Faculté de Medecine Pierre et Marie Curie, Site Saint Antoine, Paris, France
| | | | - André Guillouzo
- Inserm UMR991, Foie, Métabolisme et Cancer, Rennes, France Université de Rennes 1, Rennes, France
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17
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Miszczuk GS, Barosso IR, Zucchetti AE, Boaglio AC, Pellegrino JM, Sánchez Pozzi EJ, Roma MG, Crocenzi FA. Sandwich-cultured rat hepatocytes as an in vitro model to study canalicular transport alterations in cholestasis. Arch Toxicol 2014; 89:979-90. [PMID: 24912783 DOI: 10.1007/s00204-014-1283-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 05/20/2014] [Indexed: 12/28/2022]
Abstract
At present, it has not been systematically evaluated whether the functional alterations induced by cholestatic compounds in canalicular transporters involved in bile formation can be reproduced in sandwich-cultured rat hepatocytes (SCRHs). Here, we focused on two clinically relevant cholestatic agents, such as estradiol 17β-D-glucuronide (E17G) and taurolithocholate (TLC), also testing the ability of dibutyryl cyclic AMP (DBcAMP) to prevent their effects. SCRHs were incubated with E17G (200 µM) or TLC (2.5 µM) for 30 min, with or without pre-incubation with DBcAMP (10 µM) for 15 min. Then, the increase in glutathione methyl fluorescein (GS-MF)-associated fluorescence inside the canaliculi was monitored by quantitative time-lapse imaging, and Mrp2 transport activity was calculated by measuring the slope of the time-course fluorescence curves during the initial linear phase, which was considered to be the Mrp2-mediated initial transport rate (ITR). E17G and TLC impaired canalicular bile formation, as evidenced by a decrease in both the bile canaliculus volume and the bile canaliculus width, estimated from 3D and 2D confocal images, respectively. These compounds decreased ITR and induced retrieval of Mrp2, a main pathomechanism involved in their cholestatic effects. Finally, DBcAMP prevented these effects, and its well-known choleretic effect was evident from the increase in the canalicular volume/width values; this choleretic effect is associated in part with its capability to increase Mrp2 activity, evidenced here by the increase in ITR of GS-MF. Our study supports the use of SCRHs as an in vitro model useful to quantify canalicular transport function under conditions of cholestasis and choleresis.
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Affiliation(s)
- Gisel S Miszczuk
- Instituto de Fisiología Experimental (IFISE) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas - Universidad Nacional de Rosario (UNR), Suipacha 570, S2002LRL, Rosario, Argentina
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18
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Zucchetti AE, Barosso IR, Boaglio AC, Basiglio CL, Miszczuk G, Larocca MC, Ruiz ML, Davio CA, Roma MG, Crocenzi FA, Pozzi EJS. G-protein-coupled receptor 30/adenylyl cyclase/protein kinase A pathway is involved in estradiol 17ß-D-glucuronide-induced cholestasis. Hepatology 2014; 59:1016-29. [PMID: 24115158 DOI: 10.1002/hep.26752] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Accepted: 09/16/2013] [Indexed: 12/16/2022]
Abstract
UNLABELLED Estradiol-17ß-D-glucuronide (E17G) activates different signaling pathways (e.g., Ca(2+) -dependent protein kinase C, phosphoinositide 3-kinase/protein kinase B, mitogen-activated protein kinases [MAPKs] p38 and extracellular signal-related kinase 1/2, and estrogen receptor alpha) that lead to acute cholestasis in rat liver with retrieval of the canalicular transporters, bile salt export pump (Abcb11) and multidrug resistance-associated protein 2 (Abcc2). E17G shares with nonconjugated estradiol the capacity to activate these pathways. G-protein-coupled receptor 30 (GPR30) is a receptor implicated in nongenomic effects of estradiol, and the aim of this study was to analyze the potential role of this receptor and its downstream effectors in E17G-induced cholestasis. In vitro, GPR30 inhibition by G15 or its knockdown with small interfering RNA strongly prevented E17G-induced impairment of canalicular transporter function and localization. E17G increased cyclic adenosine monophosphate (cAMP) levels, and this increase was blocked by G15, linking GPR30 to adenylyl cyclase (AC). Moreover, AC inhibition totally prevented E17G insult. E17G also increased protein kinase A (PKA) activity, which was blocked by G15 and AC inhibitors, connecting the links of the pathway, GPR30-AC-PKA. PKA inhibition prevented E17G-induced cholestasis, whereas exchange protein activated directly by cyclic nucleotide/MAPK kinase, another cAMP downstream effector, was not implicated in cAMP cholestatic action. In the perfused rat liver model, inhibition of the GPR30-AC-PKA pathway totally prevented E17G-induced alteration in Abcb11 and Abcc2 function and localization. CONCLUSION Activation of GPR30-AC-PKA is a key factor in the alteration of canalicular transporter function and localization induced by E17G. Interaction of E17G with GPR30 may be the first event in the cascade of signaling activation.
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Affiliation(s)
- Andrés E Zucchetti
- Instituto de Fisiología Experimental (IFISE), Facultad de Ciencias Bioquímicas y Farmacéuticas (CONICET-U.N.R.), Rosario, Argentina
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19
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YANG KYUNGHEE, KÖCK KATHLEEN, SEDYKH ALEXANDER, TROPSHA ALEXANDER, BROUWER KIML. An updated review on drug-induced cholestasis: mechanisms and investigation of physicochemical properties and pharmacokinetic parameters. J Pharm Sci 2013; 102:3037-57. [PMID: 23653385 PMCID: PMC4369767 DOI: 10.1002/jps.23584] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 04/13/2013] [Accepted: 04/16/2013] [Indexed: 12/15/2022]
Abstract
Drug-induced cholestasis is an important form of acquired liver disease and is associated with significant morbidity and mortality. Bile acids are key signaling molecules, but they can exert toxic responses when they accumulate in hepatocytes. This review focuses on the physiological mechanisms of drug-induced cholestasis associated with altered bile acid homeostasis due to direct (e.g., bile acid transporter inhibition) or indirect (e.g., activation of nuclear receptors, altered function/expression of bile acid transporters) processes. Mechanistic information about the effects of a drug on bile acid homeostasis is important when evaluating the cholestatic potential of a compound, but experimental data often are not available. The relationship between physicochemical properties, pharmacokinetic parameters, and inhibition of the bile salt export pump among 77 cholestatic drugs with different pathophysiological mechanisms of cholestasis (i.e., impaired formation of bile vs. physical obstruction of bile flow) was investigated. The utility of in silico models to obtain mechanistic information about the impact of compounds on bile acid homeostasis to aid in predicting the cholestatic potential of drugs is highlighted.
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Affiliation(s)
- KYUNGHEE YANG
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - KATHLEEN KÖCK
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - ALEXANDER SEDYKH
- Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - ALEXANDER TROPSHA
- Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - KIM L.R. BROUWER
- Division of Pharmacotherapy and Experimental Therapeutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
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