Bile Acid Sequestration via Colesevelam Reduces Bile Acid Hydrophobicity and Improves Liver Pathology in <i>Cyp2c70</i><sup>−/−</sup> Mice with a Human-like Bile Acid Composition

Bile acids (BAs) and their signaling pathways have been identified as therapeutic targets for liver and metabolic diseases. We generated <i>Cyp2c70</i><sup>−/−</sup> (KO) mice that were not able to convert chenodeoxycholic acid into rodent-specific muricholic acids (MCAs) and...

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Main Authors: Anna Palmiotti, Hilde D. de Vries, Milaine V. Hovingh, Martijn Koehorst, Niels L. Mulder, Esther Verkade, Melany K. Veentjer, Theo H. van Dijk, Vincent W. Bloks, Rick Havinga, Henkjan J. Verkade, Jan Freark de Boer, Folkert Kuipers
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Language:English
Published: MDPI AG 2023-09-01
Series:Biomedicines
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Online Access:https://www.mdpi.com/2227-9059/11/9/2495
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author Anna Palmiotti
Hilde D. de Vries
Milaine V. Hovingh
Martijn Koehorst
Niels L. Mulder
Esther Verkade
Melany K. Veentjer
Theo H. van Dijk
Vincent W. Bloks
Rick Havinga
Henkjan J. Verkade
Jan Freark de Boer
Folkert Kuipers
author_facet Anna Palmiotti
Hilde D. de Vries
Milaine V. Hovingh
Martijn Koehorst
Niels L. Mulder
Esther Verkade
Melany K. Veentjer
Theo H. van Dijk
Vincent W. Bloks
Rick Havinga
Henkjan J. Verkade
Jan Freark de Boer
Folkert Kuipers
author_sort Anna Palmiotti
collection DOAJ
description Bile acids (BAs) and their signaling pathways have been identified as therapeutic targets for liver and metabolic diseases. We generated <i>Cyp2c70</i><sup>−/−</sup> (KO) mice that were not able to convert chenodeoxycholic acid into rodent-specific muricholic acids (MCAs) and, hence, possessed a more hydrophobic, human-like BA pool. Recently, we have shown that KO mice display cholangiopathic features with the development of liver fibrosis. The aim of this study was to determine whether BA sequestration modulates liver pathology in Western type-diet (WTD)-fed KO mice. The BA sequestrant colesevelam was mixed into the WTD (2% <i>w</i>/<i>w</i>) of male <i>Cyp2c70</i><sup>+/+</sup> (WT) and KO mice and the effects were evaluated after 3 weeks of treatment. Colesevelam increased fecal BA excretion in WT and KO mice and reduced the hydrophobicity of biliary BAs in KO mice. Colesevelam ameliorated diet-induced hepatic steatosis in WT mice, whereas KO mice were resistant to diet-induced steatosis and BA sequestration had no additional effects on liver fat content. Total cholesterol concentrations in livers of colesevelam-treated WT and KO mice were significantly lower than those of untreated controls. Of particular note, colesevelam treatment normalized plasma levels of liver damage markers in KO mice and markedly decreased hepatic mRNA levels of fibrogenesis-related genes in KO mice. Lastly, colesevelam did not affect glucose excursions and insulin sensitivity in WT or KO mice. Our data show that BA sequestration ameliorates liver pathology in <i>Cyp2c70</i><sup>−/−</sup> mice with a human-like bile acid composition without affecting insulin sensitivity.
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spelling doaj.art-6f2bbd3a48534fe2b250f2e7649963fb2023-11-19T09:42:08ZengMDPI AGBiomedicines2227-90592023-09-01119249510.3390/biomedicines11092495Bile Acid Sequestration via Colesevelam Reduces Bile Acid Hydrophobicity and Improves Liver Pathology in <i>Cyp2c70</i><sup>−/−</sup> Mice with a Human-like Bile Acid CompositionAnna Palmiotti0Hilde D. de Vries1Milaine V. Hovingh2Martijn Koehorst3Niels L. Mulder4Esther Verkade5Melany K. Veentjer6Theo H. van Dijk7Vincent W. Bloks8Rick Havinga9Henkjan J. Verkade10Jan Freark de Boer11Folkert Kuipers12Department of Pediatrics, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The NetherlandsDepartment of Laboratory Medicine, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The NetherlandsDepartment of Pediatrics, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The NetherlandsDepartment of Laboratory Medicine, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The NetherlandsDepartment of Pediatrics, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The NetherlandsDepartment of Pediatrics, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The NetherlandsDepartment of Pediatrics, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The NetherlandsDepartment of Laboratory Medicine, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The NetherlandsDepartment of Pediatrics, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The NetherlandsDepartment of Pediatrics, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The NetherlandsDepartment of Pediatrics, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The NetherlandsDepartment of Pediatrics, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The NetherlandsDepartment of Pediatrics, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The NetherlandsBile acids (BAs) and their signaling pathways have been identified as therapeutic targets for liver and metabolic diseases. We generated <i>Cyp2c70</i><sup>−/−</sup> (KO) mice that were not able to convert chenodeoxycholic acid into rodent-specific muricholic acids (MCAs) and, hence, possessed a more hydrophobic, human-like BA pool. Recently, we have shown that KO mice display cholangiopathic features with the development of liver fibrosis. The aim of this study was to determine whether BA sequestration modulates liver pathology in Western type-diet (WTD)-fed KO mice. The BA sequestrant colesevelam was mixed into the WTD (2% <i>w</i>/<i>w</i>) of male <i>Cyp2c70</i><sup>+/+</sup> (WT) and KO mice and the effects were evaluated after 3 weeks of treatment. Colesevelam increased fecal BA excretion in WT and KO mice and reduced the hydrophobicity of biliary BAs in KO mice. Colesevelam ameliorated diet-induced hepatic steatosis in WT mice, whereas KO mice were resistant to diet-induced steatosis and BA sequestration had no additional effects on liver fat content. Total cholesterol concentrations in livers of colesevelam-treated WT and KO mice were significantly lower than those of untreated controls. Of particular note, colesevelam treatment normalized plasma levels of liver damage markers in KO mice and markedly decreased hepatic mRNA levels of fibrogenesis-related genes in KO mice. Lastly, colesevelam did not affect glucose excursions and insulin sensitivity in WT or KO mice. Our data show that BA sequestration ameliorates liver pathology in <i>Cyp2c70</i><sup>−/−</sup> mice with a human-like bile acid composition without affecting insulin sensitivity.https://www.mdpi.com/2227-9059/11/9/2495bile acidscolesevelamenterohepatic circulationliverhumanized mouse model
spellingShingle Anna Palmiotti
Hilde D. de Vries
Milaine V. Hovingh
Martijn Koehorst
Niels L. Mulder
Esther Verkade
Melany K. Veentjer
Theo H. van Dijk
Vincent W. Bloks
Rick Havinga
Henkjan J. Verkade
Jan Freark de Boer
Folkert Kuipers
Bile Acid Sequestration via Colesevelam Reduces Bile Acid Hydrophobicity and Improves Liver Pathology in <i>Cyp2c70</i><sup>−/−</sup> Mice with a Human-like Bile Acid Composition
Biomedicines
bile acids
colesevelam
enterohepatic circulation
liver
humanized mouse model
title Bile Acid Sequestration via Colesevelam Reduces Bile Acid Hydrophobicity and Improves Liver Pathology in <i>Cyp2c70</i><sup>−/−</sup> Mice with a Human-like Bile Acid Composition
title_full Bile Acid Sequestration via Colesevelam Reduces Bile Acid Hydrophobicity and Improves Liver Pathology in <i>Cyp2c70</i><sup>−/−</sup> Mice with a Human-like Bile Acid Composition
title_fullStr Bile Acid Sequestration via Colesevelam Reduces Bile Acid Hydrophobicity and Improves Liver Pathology in <i>Cyp2c70</i><sup>−/−</sup> Mice with a Human-like Bile Acid Composition
title_full_unstemmed Bile Acid Sequestration via Colesevelam Reduces Bile Acid Hydrophobicity and Improves Liver Pathology in <i>Cyp2c70</i><sup>−/−</sup> Mice with a Human-like Bile Acid Composition
title_short Bile Acid Sequestration via Colesevelam Reduces Bile Acid Hydrophobicity and Improves Liver Pathology in <i>Cyp2c70</i><sup>−/−</sup> Mice with a Human-like Bile Acid Composition
title_sort bile acid sequestration via colesevelam reduces bile acid hydrophobicity and improves liver pathology in i cyp2c70 i sup sup mice with a human like bile acid composition
topic bile acids
colesevelam
enterohepatic circulation
liver
humanized mouse model
url https://www.mdpi.com/2227-9059/11/9/2495
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