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Johanns M, Haas JT, Raverdy V, Vandel J, Chevalier-Dubois J, Guille L, Derudas B, Legendre B, Caiazzo R, Verkindt H, Gnemmi V, Leteurtre E, Derhourhi M, Bonnefond A, Froguel P, Eeckhoute J, Lassailly G, Mathurin P, Pattou F, Staels B, Lefebvre P. Time-of-day-dependent variation of the human liver transcriptome and metabolome is disrupted in MASLD. JHEP Rep 2024; 6:100948. [PMID: 38125300 PMCID: PMC10730870 DOI: 10.1016/j.jhepr.2023.100948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 10/12/2023] [Accepted: 10/14/2023] [Indexed: 12/23/2023] Open
Abstract
Background & Aims Liver homeostasis is ensured in part by time-of-day-dependent processes, many of them being paced by the molecular circadian clock. Liver functions are compromised in metabolic dysfunction-associated steatotic liver disease (MASLD) and metabolic dysfunction-associated steatohepatitis (MASH), and clock disruption increases susceptibility to MASLD progression in rodent models. We therefore investigated whether the time-of-day-dependent transcriptome and metabolome are significantly altered in human steatotic and MASH livers. Methods Liver biopsies, collected within an 8 h-window from a carefully phenotyped cohort of 290 patients and histologically diagnosed to be either normal, steatotic or MASH hepatic tissues, were analyzed by RNA sequencing and unbiased metabolomic approaches. Time-of-day-dependent gene expression patterns and metabolomes were identified and compared between histologically normal, steatotic and MASH livers. Results Herein, we provide a first-of-its-kind report of a daytime-resolved human liver transcriptome-metabolome and associated alterations in MASLD. Transcriptomic analysis showed a robustness of core molecular clock components in steatotic and MASH livers. It also revealed stage-specific, time-of-day-dependent alterations of hundreds of transcripts involved in cell-to-cell communication, intracellular signaling and metabolism. Similarly, rhythmic amino acid and lipid metabolomes were affected in pathological livers. Both TNFα and PPARγ signaling were predicted as important contributors to altered rhythmicity. Conclusion MASLD progression to MASH perturbs time-of-day-dependent processes in human livers, while the differential expression of core molecular clock components is maintained. Impact and implications This work characterizes the rhythmic patterns of the transcriptome and metabolome in the human liver. Using a cohort of well-phenotyped patients (n = 290) for whom the time-of-day at biopsy collection was known, we show that time-of-day variations observed in histologically normal livers are gradually perturbed in liver steatosis and metabolic dysfunction-associated steatohepatitis. Importantly, these observations, albeit obtained across a restricted time window, provide further support for preclinical studies demonstrating alterations of rhythmic patterns in diseased livers. On a practical note, this study indicates the importance of considering time-of-day as a critical biological variable which may significantly affect data interpretation in animal and human studies of liver diseases.
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Affiliation(s)
- Manuel Johanns
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR1011-EGID, F-59000 Lille, France
| | - Joel T. Haas
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR1011-EGID, F-59000 Lille, France
| | - Violetta Raverdy
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR1190-EGID, F-59000 Lille, France
| | - Jimmy Vandel
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR1011-EGID, F-59000 Lille, France
| | - Julie Chevalier-Dubois
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR1011-EGID, F-59000 Lille, France
| | - Loic Guille
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR1011-EGID, F-59000 Lille, France
| | - Bruno Derudas
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR1011-EGID, F-59000 Lille, France
| | - Benjamin Legendre
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR1190-EGID, F-59000 Lille, France
| | - Robert Caiazzo
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR1190-EGID, F-59000 Lille, France
| | - Helene Verkindt
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR1190-EGID, F-59000 Lille, France
| | | | | | - Mehdi Derhourhi
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR 1283/8199-EGID, F-59000 Lille, France
| | - Amélie Bonnefond
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR 1283/8199-EGID, F-59000 Lille, France
- Department of Metabolism, Imperial College London; London, United Kingdom
| | - Philippe Froguel
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR 1283/8199-EGID, F-59000 Lille, France
- Department of Metabolism, Imperial College London; London, United Kingdom
| | - Jérôme Eeckhoute
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR1011-EGID, F-59000 Lille, France
| | | | | | - François Pattou
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR1190-EGID, F-59000 Lille, France
| | - Bart Staels
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR1011-EGID, F-59000 Lille, France
| | - Philippe Lefebvre
- Univ. Lille, Inserm, CHU Lille, Institut Pasteur de Lille, UMR1011-EGID, F-59000 Lille, France
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Jiang T, Hu Y, Cao J. [The role of sinusoidal endothelial cells in liver injury: a review]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2023; 35:92-97. [PMID: 36974022 DOI: 10.16250/j.32.1374.2022118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Liver sinusoidal endothelial cells (LSECs) locate on the surface of hepatic sinusoids. As the first line of defense between the liver and blood, LSECs are the most abundant non-parenchymal cells in the liver. Under physiological conditions, LSECs may induce liver immune tolerance through participating in substance transport and metabolic waste removal, thereby maintaining liver homeostasis, and under pathological conditions, LSECs may promote liver immune response via antigen presentation. LSECs have been found to play a crucial regulatory role in maintaining the balance between liver regeneration and liver fibrosis. This article reviews the progress of researches on LSECs functions, LSECs changes in liver injury, signal pathways associated with regulation of LSECs functions, and the interaction between LSECs and other types of cells in the liver, aiming to elucidate the function of LSECs and their roles in liver diseases.
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Affiliation(s)
- T Jiang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); National Health Commission Key Laboratory of Parasite and Vector Biology; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Shanghai 200025, China
| | - Y Hu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); National Health Commission Key Laboratory of Parasite and Vector Biology; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Shanghai 200025, China
| | - J Cao
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); National Health Commission Key Laboratory of Parasite and Vector Biology; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Shanghai 200025, China
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3
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Jauch AS, Wohlfeil SA, Weller C, Dietsch B, Häfele V, Stojanovic A, Kittel M, Nolte H, Cerwenka A, Neumaier M, Schledzewski K, Sticht C, Reiners-Koch PS, Goerdt S, Géraud C. Lyve-1 deficiency enhances the hepatic immune microenvironment entailing altered susceptibility to melanoma liver metastasis. Cancer Cell Int 2022; 22:398. [PMID: 36496412 PMCID: PMC9741792 DOI: 10.1186/s12935-022-02800-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/21/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Hyaluronan receptor LYVE-1 is expressed by liver sinusoidal endothelial cells (LSEC), lymphatic endothelial cells and specialized macrophages. Besides binding to hyaluronan, LYVE-1 can mediate adhesion of leukocytes and cancer cells to endothelial cells. Here, we assessed the impact of LYVE-1 on physiological liver functions and metastasis. METHODS Mice with deficiency of Lyve-1 (Lyve-1-KO) were analyzed using histology, immunofluorescence, microarray analysis, plasma proteomics and flow cytometry. Liver metastasis was studied by intrasplenic/intravenous injection of melanoma (B16F10 luc2, WT31) or colorectal carcinoma (MC38). RESULTS Hepatic architecture, liver size, endothelial differentiation and angiocrine functions were unaltered in Lyve-1-KO. Hyaluronan plasma levels were significantly increased in Lyve-1-KO. Besides, plasma proteomics revealed increased carbonic anhydrase-2 and decreased FXIIIA. Furthermore, gene expression analysis of LSEC indicated regulation of immunological pathways. Therefore, liver metastasis of highly and weakly immunogenic tumors, i.e. melanoma and colorectal carcinoma (CRC), was analyzed. Hepatic metastasis of B16F10 luc2 and WT31 melanoma cells, but not MC38 CRC cells, was significantly reduced in Lyve-1-KO mice. In vivo retention assays with B16F10 luc2 cells were unaltered between Lyve-1-KO and control mice. However, in tumor-free Lyve-1-KO livers numbers of hepatic CD4+, CD8+ and regulatory T cells were increased. In addition, iron deposition was found in F4/80+ liver macrophages known to exert pro-inflammatory effects. CONCLUSION Lyve-1 deficiency controlled hepatic metastasis in a tumor cell-specific manner leading to reduced growth of hepatic metastases of melanoma, but not CRC. Anti-tumorigenic effects are likely due to enhancement of the premetastatic hepatic immune microenvironment influencing early liver metastasis formation.
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Affiliation(s)
- Anna Sophia Jauch
- grid.7700.00000 0001 2190 4373Section of Clinical and Molecular Dermatology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Sebastian A. Wohlfeil
- grid.7700.00000 0001 2190 4373Department of Dermatology, Venereology, and Allergology, University Medical Center and Medical Faculty Mannheim, Heidelberg University, and Center of Excellence in Dermatology, 68135 Mannheim, Germany ,grid.7497.d0000 0004 0492 0584Skin Cancer Unit, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Céline Weller
- grid.7700.00000 0001 2190 4373Section of Clinical and Molecular Dermatology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Bianca Dietsch
- grid.7700.00000 0001 2190 4373Section of Clinical and Molecular Dermatology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Verena Häfele
- grid.7700.00000 0001 2190 4373Section of Clinical and Molecular Dermatology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Ana Stojanovic
- grid.7700.00000 0001 2190 4373Department of Immunobiochemistry, Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany ,grid.7700.00000 0001 2190 4373European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Maximilian Kittel
- grid.7700.00000 0001 2190 4373Institute for Clinical Chemistry, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Hendrik Nolte
- grid.419502.b0000 0004 0373 6590Max-Planck-Institute for Biology of Ageing, Cologne, Germany
| | - Adelheid Cerwenka
- grid.7700.00000 0001 2190 4373Department of Immunobiochemistry, Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany ,grid.7700.00000 0001 2190 4373European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Michael Neumaier
- grid.7700.00000 0001 2190 4373Institute for Clinical Chemistry, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Kai Schledzewski
- grid.7700.00000 0001 2190 4373Department of Dermatology, Venereology, and Allergology, University Medical Center and Medical Faculty Mannheim, Heidelberg University, and Center of Excellence in Dermatology, 68135 Mannheim, Germany
| | - Carsten Sticht
- grid.7700.00000 0001 2190 4373NGS Core Facility, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Philipp-Sebastian Reiners-Koch
- grid.7700.00000 0001 2190 4373Department of Dermatology, Venereology, and Allergology, University Medical Center and Medical Faculty Mannheim, Heidelberg University, and Center of Excellence in Dermatology, 68135 Mannheim, Germany ,grid.7700.00000 0001 2190 4373European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Sergij Goerdt
- grid.7700.00000 0001 2190 4373Department of Dermatology, Venereology, and Allergology, University Medical Center and Medical Faculty Mannheim, Heidelberg University, and Center of Excellence in Dermatology, 68135 Mannheim, Germany ,grid.7700.00000 0001 2190 4373European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Cyrill Géraud
- grid.7700.00000 0001 2190 4373Section of Clinical and Molecular Dermatology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany ,grid.7700.00000 0001 2190 4373Department of Dermatology, Venereology, and Allergology, University Medical Center and Medical Faculty Mannheim, Heidelberg University, and Center of Excellence in Dermatology, 68135 Mannheim, Germany ,grid.7700.00000 0001 2190 4373European Center for Angioscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
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Ren L, Ma XL, Wang HL, Li R, Cui JJ, Yan PJ, Wang YN, Yu XY, Du P, Yu HY, Guo HH, Tang R, Che YS, Zheng WS, Jiang JD, Wang LL. Prebiotic-like cyclodextrin assisted silybin on NAFLD through restoring liver and gut homeostasis. J Control Release 2022; 348:825-840. [PMID: 35752255 DOI: 10.1016/j.jconrel.2022.06.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 06/11/2022] [Accepted: 06/17/2022] [Indexed: 11/17/2022]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the most common chronic liver disease with no currently approved treatment. The natural compound silybin (SLN) has versatile hepatoprotective efficacy with negligible adverse effects; however, poor absorption limits its clinical applications. Gut microbiota has been proposed to play a crucial role in the pathophysiology of NAFLD and targeted for disease control. Cyclodextrins, the cyclic oligosaccharides, were documented to have various health benefits with potential prebiotic properties. This study aimed to develop a silybin-2-hydroxypropyl-β-cyclodextrin inclusion (SHβCD) to improve the therapeutic efficacy of SLN and elucidate the mechanisms of improvement. The results showed that SLN formed a 1:1 stoichiometric inclusion complex with HP-β-CD. The solubility of SLN was increased by generating SHβCD, resulting in improved drug permeability and bioavailability. In high-fat diet (HFD)-fed hamsters, SHβCD modulated gut health by restoring the gut microbiota and intestinal integrity. SHβCD showed superior anti-lipid accumulation, antioxidant, and anti-inflammatory effects compared with SLN alone. Transcriptome analysis in the liver tissue implied that the improved inflammation and/or energy homeostasis was the potential mechanism. Therefore, SHβCD may be a promising alternative for the treatment of NAFLD, attributing to the dual functions of HβCD on drug absorption and gut microbial homeostasis.
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Affiliation(s)
- Ling Ren
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Xiao-Lei Ma
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Hong-Liang Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Rui Li
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Jin-Jin Cui
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Peng-Ju Yan
- JiaMuSi University, Heilongjiang 154007, China
| | - Ya-Nan Wang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Xiao-You Yu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Peng Du
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Hao-Yang Yu
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Hui-Hui Guo
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Rou Tang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Yong-Sheng Che
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Wen-Sheng Zheng
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China.
| | - Jian-Dong Jiang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China; State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China.
| | - Lu-Lu Wang
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China.
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Pocaterra A, Santinon G, Romani P, Brian I, Dimitracopoulos A, Ghisleni A, Carnicer-Lombarte A, Forcato M, Braghetta P, Montagner M, Galuppini F, Aragona M, Pennelli G, Bicciato S, Gauthier N, Franze K, Dupont S. F-actin dynamics regulates mammalian organ growth and cell fate maintenance. J Hepatol 2019; 71:130-142. [PMID: 30878582 DOI: 10.1016/j.jhep.2019.02.022] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 01/31/2019] [Accepted: 02/22/2019] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS In vitro, cell function can be potently regulated by the mechanical properties of cells and of their microenvironment. Cells measure these features by developing forces via their actomyosin cytoskeleton, and respond accordingly by regulating intracellular pathways, including the transcriptional coactivators YAP/TAZ. Whether mechanical cues are relevant for in vivo regulation of adult organ homeostasis, and whether this occurs through YAP/TAZ, remains largely unaddressed. METHODS We developed Capzb conditional knockout mice and obtained primary fibroblasts to characterize the role of CAPZ in vitro. In vivo functional analyses were carried out by inducing Capzb inactivation in adult hepatocytes, manipulating YAP/Hippo activity by hydrodynamic tail vein injections, and treating mice with the ROCK inhibitor, fasudil. RESULTS We found that the F-actin capping protein CAPZ restrains actomyosin contractility: Capzb inactivation alters stress fiber and focal adhesion dynamics leading to enhanced myosin activity, increased traction forces, and increased liver stiffness. In vitro, this rescues YAP from inhibition by a small cellular geometry; in vivo, it induces YAP activation in parallel to the Hippo pathway, causing extensive hepatocyte proliferation and leading to striking organ overgrowth. Moreover, Capzb is required for the maintenance of the differentiated hepatocyte state, for metabolic zonation, and for gluconeogenesis. In keeping with changes in tissue mechanics, inhibition of the contractility regulator ROCK, or deletion of the Yap1 mechanotransducer, reverse the phenotypes emerging in Capzb-null livers. CONCLUSIONS These results indicate a previously unsuspected role for CAPZ in tuning the mechanical properties of cells and tissues, which is required in hepatocytes for the maintenance of the differentiated state and to regulate organ size. More generally, it indicates for the first time that mechanotransduction has a physiological role in maintaining liver homeostasis in mammals. LAY SUMMARY The mechanical properties of cells and tissues (i.e. whether they are soft or stiff) are thought to be important regulators of cell behavior. Herein, we found that inactivation of the protein CAPZ alters the mechanical properties of cells and liver tissues, leading to YAP hyperactivation. In turn, this profoundly alters liver physiology, causing organ overgrowth, defects in liver cell differentiation and metabolism. These results reveal a previously uncharacterized role for mechanical signals in the maintenance of adult liver homeostasis.
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Affiliation(s)
| | - Giulia Santinon
- Department of Molecular Medicine DMM, University of Padova, Italy
| | - Patrizia Romani
- Department of Molecular Medicine DMM, University of Padova, Italy
| | - Irene Brian
- Department of Molecular Medicine DMM, University of Padova, Italy
| | | | - Andrea Ghisleni
- Institute FIRC (Italian Foundation for Cancer Research) of Molecular Oncology (IFOM Institute FIRC for Molecular Oncology), Milan, Italy
| | | | - Mattia Forcato
- Department of Life Sciences, University of Modena and Reggio Emilia, Italy
| | - Paola Braghetta
- Department of Molecular Medicine DMM, University of Padova, Italy
| | - Marco Montagner
- Department of Molecular Medicine DMM, University of Padova, Italy
| | | | | | | | - Silvio Bicciato
- Department of Life Sciences, University of Modena and Reggio Emilia, Italy
| | - Nils Gauthier
- Institute FIRC (Italian Foundation for Cancer Research) of Molecular Oncology (IFOM Institute FIRC for Molecular Oncology), Milan, Italy
| | - Kristian Franze
- Department of Physiology Development and Neuroscience, University of Cambridge, UK
| | - Sirio Dupont
- Department of Molecular Medicine DMM, University of Padova, Italy.
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Cho JH, Kim GY, Mansfield BC, Chou JY. Sirtuin signaling controls mitochondrial function in glycogen storage disease type Ia. J Inherit Metab Dis 2018; 41:10.1007/s10545-018-0192-1. [PMID: 29740774 PMCID: PMC6541525 DOI: 10.1007/s10545-018-0192-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 04/16/2018] [Accepted: 04/23/2018] [Indexed: 12/18/2022]
Abstract
Glycogen storage disease type Ia (GSD-Ia) deficient in glucose-6-phosphatase-α (G6Pase-α) is a metabolic disorder characterized by impaired glucose homeostasis and a long-term complication of hepatocellular adenoma/carcinoma (HCA/HCC). Mitochondrial dysfunction has been implicated in GSD-Ia but the underlying mechanism and its contribution to HCA/HCC development remain unclear. We have shown that hepatic G6Pase-α deficiency leads to downregulation of sirtuin 1 (SIRT1) signaling that underlies defective hepatic autophagy in GSD-Ia. SIRT1 is a NAD+-dependent deacetylase that can deacetylate and activate peroxisome proliferator-activated receptor-γ coactivator 1α (PGC-1α), a master regulator of mitochondrial integrity, biogenesis, and function. We hypothesized that downregulation of hepatic SIRT1 signaling in G6Pase-α-deficient livers impairs PGC-1α activity, leading to mitochondrial dysfunction. Here we show that the G6Pase-α-deficient livers display defective PGC-1α signaling, reduced numbers of functional mitochondria, and impaired oxidative phosphorylation. Overexpression of hepatic SIRT1 restores PGC-1α activity, normalizes the expression of electron transport chain components, and increases mitochondrial complex IV activity. We have previously shown that restoration of hepatic G6Pase-α expression normalized SIRT1 signaling. We now show that restoration of hepatic G6Pase-α expression also restores PGC-1α activity and mitochondrial function. Finally, we show that HCA/HCC lesions found in G6Pase-α-deficient livers contain marked mitochondrial and oxidative DNA damage. Taken together, our study shows that downregulation of hepatic SIRT1/PGC-1α signaling underlies mitochondrial dysfunction and that oxidative DNA damage incurred by damaged mitochondria may contribute to HCA/HCC development in GSD-Ia.
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Affiliation(s)
- Jun-Ho Cho
- Section on Cellular Differentiation, Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Building 10, Room 8N240C, NIH, 10 Center Drive, Bethesda, MD, 20892-1830, USA
| | - Goo-Young Kim
- Section on Cellular Differentiation, Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Building 10, Room 8N240C, NIH, 10 Center Drive, Bethesda, MD, 20892-1830, USA
| | - Brian C Mansfield
- Section on Cellular Differentiation, Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Building 10, Room 8N240C, NIH, 10 Center Drive, Bethesda, MD, 20892-1830, USA
- Foundation Fighting Blindness, Columbia, MD, 21046, USA
| | - Janice Y Chou
- Section on Cellular Differentiation, Division of Translational Medicine, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Building 10, Room 8N240C, NIH, 10 Center Drive, Bethesda, MD, 20892-1830, USA.
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