1
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Nishikawa Y. Aberrant differentiation and proliferation of hepatocytes in chronic liver injury and liver tumors. Pathol Int 2024. [PMID: 38837539 DOI: 10.1111/pin.13441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 04/29/2024] [Accepted: 05/12/2024] [Indexed: 06/07/2024]
Abstract
Chronic liver injury induces liver cirrhosis and facilitates hepatocarcinogenesis. However, the effects of this condition on hepatocyte proliferation and differentiation are unclear. We showed that rodent hepatocytes display a ductular phenotype when they are cultured within a collagenous matrix. This process involves transdifferentiation without the emergence of hepatoblastic features and is at least partially reversible. During the ductular reaction in chronic liver diseases with progressive fibrosis, some hepatocytes, especially those adjacent to ectopic ductules, demonstrate ductular transdifferentiation, but the majority of increased ductules originate from the existing bile ductular system that undergoes extensive remodeling. In chronic injury, hepatocyte proliferation is weak but sustained, and most regenerative nodules in liver cirrhosis are composed of clonally proliferating hepatocytes, suggesting that a small fraction of hepatocytes maintain their proliferative capacity in chronic injury. In mouse hepatocarcinogenesis models, hepatocytes activate the expression of various fetal/neonatal genes, indicating that these cells undergo dedifferentiation. Hepatocyte-specific somatic integration of various oncogenes in mice demonstrated that hepatocytes may be the cells of origin for a broad spectrum of liver tumors through transdifferentiation and dedifferentiation. In conclusion, the phenotypic plasticity and heterogeneity of mature hepatocytes are important for understanding the pathogenesis of chronic liver diseases and liver tumors.
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Affiliation(s)
- Yuji Nishikawa
- President's Office, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
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2
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Oliva-Vilarnau N, Beusch CM, Sabatier P, Sakaraki E, Tjaden A, Graetz L, Büttner FA, Dorotea D, Nguyen M, Bergqvist F, Sundström Y, Müller S, Zubarev RA, Schulte G, Tredup C, Gramignoli R, Tietge UJ, Lauschke VM. Wnt/β-catenin and NFκB signaling synergize to trigger growth factor-free regeneration of adult primary human hepatocytes. Hepatology 2024; 79:1337-1351. [PMID: 37870288 PMCID: PMC11095891 DOI: 10.1097/hep.0000000000000648] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 09/18/2023] [Indexed: 10/24/2023]
Abstract
BACKGROUND AND AIMS The liver has a remarkable capacity to regenerate, which is sustained by the ability of hepatocytes to act as facultative stem cells that, while normally quiescent, re-enter the cell cycle after injury. Growth factor signaling is indispensable in rodents, whereas Wnt/β-catenin is not required for effective tissue repair. However, the molecular networks that control human liver regeneration remain unclear. METHODS Organotypic 3D spheroid cultures of primary human or murine hepatocytes were used to identify the signaling network underlying cell cycle re-entry. Furthermore, we performed chemogenomic screening of a library enriched for epigenetic regulators and modulators of immune function to determine the importance of epigenomic control for human hepatocyte regeneration. RESULTS Our results showed that, unlike in rodents, activation of Wnt/β-catenin signaling is the major mitogenic cue for adult primary human hepatocytes. Furthermore, we identified TGFβ inhibition and inflammatory signaling through NF-κB as essential steps for the quiescent-to-regenerative switch that allows Wnt/β-catenin-induced proliferation of human cells. In contrast, growth factors, but not Wnt/β-catenin signaling, triggered hyperplasia in murine hepatocytes. High-throughput screening in a human model confirmed the relevance of NFκB and revealed the critical roles of polycomb repressive complex 2, as well as of the bromodomain families I, II, and IV. CONCLUSIONS This study revealed a network of NFκB, TGFβ, and Wnt/β-catenin that controls human hepatocyte regeneration in the absence of exogenous growth factors, identified novel regulators of hepatocyte proliferation, and highlighted the potential of organotypic culture systems for chemogenomic interrogation of complex physiological processes.
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Affiliation(s)
- Nuria Oliva-Vilarnau
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Christian M. Beusch
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Pierre Sabatier
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Eirini Sakaraki
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Amelie Tjaden
- Institute of Pharmaceutical Chemistry, Johann Wolfgang Goethe University, Frankfurt am Main, Germany
- Buchmann Institute for Molecular Life Sciences and Structural Genomics Consortium (SGC), Frankfurt am Main, Germany
| | - Lukas Graetz
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Florian A. Büttner
- Dr Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany
- University of Tübingen, Tübingen, Germany
| | - Debra Dorotea
- Department of Laboratory Medicine, Division of Clinical Chemistry, Karolinska Institutet, Stockholm, Sweden
| | - My Nguyen
- Department of Laboratory Medicine, Division of Clinical Chemistry, Karolinska Institutet, Stockholm, Sweden
| | - Filip Bergqvist
- Department of Medicine, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden
- The Structural Genomics Consortium (SGC), Karolinska Institutet, Stockholm, Sweden
| | - Yvonne Sundström
- Department of Medicine, Karolinska Institutet, and Karolinska University Hospital, Stockholm, Sweden
- The Structural Genomics Consortium (SGC), Karolinska Institutet, Stockholm, Sweden
| | - Susanne Müller
- Institute of Pharmaceutical Chemistry, Johann Wolfgang Goethe University, Frankfurt am Main, Germany
- Buchmann Institute for Molecular Life Sciences and Structural Genomics Consortium (SGC), Frankfurt am Main, Germany
| | - Roman A. Zubarev
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Gunnar Schulte
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Claudia Tredup
- Institute of Pharmaceutical Chemistry, Johann Wolfgang Goethe University, Frankfurt am Main, Germany
- Buchmann Institute for Molecular Life Sciences and Structural Genomics Consortium (SGC), Frankfurt am Main, Germany
| | - Roberto Gramignoli
- Department of Laboratory Medicine, Division of Pathology, Karolinska Institutet, Stockholm, Sweden
- Clinical Pathology and Cancer Diagnosis Unit, Karolinska University Hospital, Stockholm, Sweden
| | - Uwe J.F. Tietge
- Department of Laboratory Medicine, Division of Clinical Chemistry, Karolinska Institutet, Stockholm, Sweden
- Clinical Chemistry, Karolinska University Laboratory, Karolinska University Hospital, Stockholm, Sweden
| | - Volker M. Lauschke
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
- Dr Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany
- University of Tübingen, Tübingen, Germany
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3
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Michalopoulos GK. Hepatocytes of mice and men: Different regenerative signals? Hepatology 2024; 79:1246-1248. [PMID: 37972957 DOI: 10.1097/hep.0000000000000693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 11/03/2023] [Indexed: 11/19/2023]
Affiliation(s)
- George K Michalopoulos
- Department of Pathology, University of Pittsburgh, School of Medicine and UPMC, Pittsburgh, Pennsylvania, USA
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4
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Mekala S, Rai R, Reed SL, Bowen B, Michalopoulos GK, Locker J, Raeman R, Oertel M. Antagonizing Activin A/p15 INK4b Signaling as Therapeutic Strategy for Liver Disease. Cells 2024; 13:649. [PMID: 38607090 PMCID: PMC11011318 DOI: 10.3390/cells13070649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 01/09/2024] [Accepted: 02/01/2024] [Indexed: 04/13/2024] Open
Abstract
BACKGROUND/AIM Activin A is involved in the pathogenesis of human liver diseases, but its therapeutic targeting is not fully explored. Here, we tested the effect of novel, highly specific small-molecule-based activin A antagonists (NUCC-474/555) in improving liver regeneration following partial hepatectomy and halting fibrosis progression in models of chronic liver diseases (CLDs). METHODS Cell toxicity of antagonists was determined in rat hepatocytes and Huh-7 cells using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide assay. Hepatocytes and hepatic stellate cells (HSCs) were treated with activin A and NUCC-555 and analyzed by reverse transcription-polymerase chain reaction and immunohistochemistry. Partial hepatectomized Fisher (F)344 rats were treated with NUCC-555, and bromodeoxyuridine (BrdU) incorporation was determined at 18/24/36/120/240 h. NUCC-555 was administered into thioacetamide- or carbon tetrachloride-treated F344 rats or C57BL/6 mice, and the fibrosis progression was studied. RESULTS NUCC-474 showed higher cytotoxicity in cultured hepatic cells; therefore, NUCC-555 was used in subsequent studies. Activin A-stimulated overexpression of cell cycle-/senescence-related genes (e.g., p15INK4b, DEC1, Glb1) was near-completely reversed by NUCC-555 in hepatocytes. Activin A-mediated HSC activation was blocked by NUCC-555. In partial hepatectomized rats, antagonizing activin A signaling resulted in a 1.9-fold and 2.3-fold increase in BrdU+ cells at 18 and 24 h, respectively. Administration of NUCC-555 in rats and mice with progressing fibrosis significantly reduced collagen accumulation (7.9-fold), HSC activation indicated by reduced alpha smooth muscle actin+ and vimentin+ cells, and serum aminotransferase activity. CONCLUSIONS Our studies demonstrate that activin A antagonist NUCC-555 promotes liver regeneration and halts fibrosis progression in CLD models, suggesting that blocking activin A signaling may represent a new approach to treating people with CLD.
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Affiliation(s)
- Sowmya Mekala
- Department of Pathology, Division of Experimental Pathology, University of Pittsburgh, 200 Lothrop Street—BST S-404, Pittsburgh, PA 15261, USA (R.R.); (G.K.M.); (R.R.)
| | - Ravi Rai
- Department of Pathology, Division of Experimental Pathology, University of Pittsburgh, 200 Lothrop Street—BST S-404, Pittsburgh, PA 15261, USA (R.R.); (G.K.M.); (R.R.)
| | - Samantha Loretta Reed
- Department of Pathology, Division of Experimental Pathology, University of Pittsburgh, 200 Lothrop Street—BST S-404, Pittsburgh, PA 15261, USA (R.R.); (G.K.M.); (R.R.)
| | - Bill Bowen
- Department of Pathology, Division of Experimental Pathology, University of Pittsburgh, 200 Lothrop Street—BST S-404, Pittsburgh, PA 15261, USA (R.R.); (G.K.M.); (R.R.)
| | - George K. Michalopoulos
- Department of Pathology, Division of Experimental Pathology, University of Pittsburgh, 200 Lothrop Street—BST S-404, Pittsburgh, PA 15261, USA (R.R.); (G.K.M.); (R.R.)
- Pittsburgh Liver Research Center (PLRC), University of Pittsburgh, Pittsburgh, PA 15261, USA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Joseph Locker
- Department of Pathology, Division of Experimental Pathology, University of Pittsburgh, 200 Lothrop Street—BST S-404, Pittsburgh, PA 15261, USA (R.R.); (G.K.M.); (R.R.)
- Pittsburgh Liver Research Center (PLRC), University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Reben Raeman
- Department of Pathology, Division of Experimental Pathology, University of Pittsburgh, 200 Lothrop Street—BST S-404, Pittsburgh, PA 15261, USA (R.R.); (G.K.M.); (R.R.)
- Pittsburgh Liver Research Center (PLRC), University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Michael Oertel
- Department of Pathology, Division of Experimental Pathology, University of Pittsburgh, 200 Lothrop Street—BST S-404, Pittsburgh, PA 15261, USA (R.R.); (G.K.M.); (R.R.)
- Pittsburgh Liver Research Center (PLRC), University of Pittsburgh, Pittsburgh, PA 15261, USA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA
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5
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Große-Segerath L, Follert P, Behnke K, Ettich J, Buschmann T, Kirschner P, Hartwig S, Lehr S, Korf-Klingebiel M, Eberhard D, Lehwald-Tywuschik N, Al-Hasani H, Knoefel WT, Heinrich S, Levkau B, Wollert KC, Scheller J, Lammert E. Identification of myeloid-derived growth factor as a mechanically-induced, growth-promoting angiocrine signal for human hepatocytes. Nat Commun 2024; 15:1076. [PMID: 38316785 PMCID: PMC10844291 DOI: 10.1038/s41467-024-44760-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 01/02/2024] [Indexed: 02/07/2024] Open
Abstract
Recently, we have shown that after partial hepatectomy (PHx), an increased hepatic blood flow initiates liver growth in mice by vasodilation and mechanically-triggered release of angiocrine signals. Here, we use mass spectrometry to identify a mechanically-induced angiocrine signal in human hepatic endothelial cells, that is, myeloid-derived growth factor (MYDGF). We show that it induces proliferation and promotes survival of primary human hepatocytes derived from different donors in two-dimensional cell culture, via activation of mitogen-activated protein kinase (MAPK) and signal transducer and activator of transcription 3 (STAT3). MYDGF also enhances proliferation of human hepatocytes in three-dimensional organoids. In vivo, genetic deletion of MYDGF decreases hepatocyte proliferation in the regenerating mouse liver after PHx; conversely, adeno-associated viral delivery of MYDGF increases hepatocyte proliferation and MAPK signaling after PHx. We conclude that MYDGF represents a mechanically-induced angiocrine signal and that it triggers growth of, and provides protection to, primary mouse and human hepatocytes.
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Affiliation(s)
- Linda Große-Segerath
- Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Institute of Metabolic Physiology, 40225, Düsseldorf, Germany
- Institute for Vascular and Islet Cell Biology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, 40225, Düsseldorf, Germany
- German Center for Diabetes Research (DZD e.V.), Helmholtz Zentrum München, 85764, Neuherberg, Germany
| | - Paula Follert
- Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Institute of Metabolic Physiology, 40225, Düsseldorf, Germany
| | - Kristina Behnke
- Institute of Biochemistry and Molecular Biology II, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, 40225, Düsseldorf, Germany
| | - Julia Ettich
- Institute of Biochemistry and Molecular Biology II, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, 40225, Düsseldorf, Germany
| | - Tobias Buschmann
- Institute for Molecular Medicine III, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, 40225, Düsseldorf, Germany
| | - Philip Kirschner
- Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Institute of Metabolic Physiology, 40225, Düsseldorf, Germany
| | - Sonja Hartwig
- German Center for Diabetes Research (DZD e.V.), Helmholtz Zentrum München, 85764, Neuherberg, Germany
- Institute for Clinical Biochemistry and Pathobiochemistry, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, Medical Faculty, 40225, Düsseldorf, Germany
| | - Stefan Lehr
- German Center for Diabetes Research (DZD e.V.), Helmholtz Zentrum München, 85764, Neuherberg, Germany
- Institute for Clinical Biochemistry and Pathobiochemistry, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, Medical Faculty, 40225, Düsseldorf, Germany
| | - Mortimer Korf-Klingebiel
- Division of Molecular and Translational Cardiology, Department of Cardiology and Angiology, Hannover Medical School, 30625, Hannover, Germany
| | - Daniel Eberhard
- Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Institute of Metabolic Physiology, 40225, Düsseldorf, Germany
| | - Nadja Lehwald-Tywuschik
- Department of General, Visceral, Thorax and Pediatric Surgery, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, 40225, Düsseldorf, Germany
| | - Hadi Al-Hasani
- German Center for Diabetes Research (DZD e.V.), Helmholtz Zentrum München, 85764, Neuherberg, Germany
- Institute for Clinical Biochemistry and Pathobiochemistry, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, Medical Faculty, 40225, Düsseldorf, Germany
| | - Wolfram Trudo Knoefel
- Department of General, Visceral, Thorax and Pediatric Surgery, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, 40225, Düsseldorf, Germany
| | - Stefan Heinrich
- Department of General, Visceral and Transplantation Surgery, University Hospital Center Mainz, 55131, Mainz, Germany
| | - Bodo Levkau
- Institute for Molecular Medicine III, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, 40225, Düsseldorf, Germany
| | - Kai C Wollert
- Division of Molecular and Translational Cardiology, Department of Cardiology and Angiology, Hannover Medical School, 30625, Hannover, Germany
| | - Jürgen Scheller
- Institute of Biochemistry and Molecular Biology II, Medical Faculty and University Hospital Düsseldorf, Heinrich Heine University Düsseldorf, 40225, Düsseldorf, Germany
| | - Eckhard Lammert
- Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Institute of Metabolic Physiology, 40225, Düsseldorf, Germany.
- Institute for Vascular and Islet Cell Biology, German Diabetes Center (DDZ), Leibniz Center for Diabetes Research at Heinrich Heine University, 40225, Düsseldorf, Germany.
- German Center for Diabetes Research (DZD e.V.), Helmholtz Zentrum München, 85764, Neuherberg, Germany.
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6
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Mitaka T, Ichinohe N, Tanimizu N. "Small Hepatocytes" in the Liver. Cells 2023; 12:2718. [PMID: 38067145 PMCID: PMC10705974 DOI: 10.3390/cells12232718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 11/17/2023] [Accepted: 11/21/2023] [Indexed: 12/18/2023] Open
Abstract
Mature hepatocytes (MHs) in an adult rodent liver are categorized into the following three subpopulations based on their proliferative capability: type I cells (MH-I), which are committed progenitor cells that possess a high growth capability and basal hepatocytic functions; type II cells (MH-II), which possess a limited proliferative capability; and type III cells (MH-III), which lose the ability to divide (replicative senescence) and reach the final differentiated state. These subpopulations may explain the liver's development and growth after birth. Generally, small-sized hepatocytes emerge in mammal livers. The cells are characterized by being morphologically identical to hepatocytes except for their size, which is substantially smaller than that of ordinary MHs. We initially discovered small hepatocytes (SHs) in the primary culture of rat hepatocytes. We believe that SHs are derived from MH-I and play a role as hepatocytic progenitors to supply MHs. The population of MH-I (SHs) is distributed in the whole lobules, a part of which possesses a self-renewal capability, and decreases with age. Conversely, injured livers of experimental models and clinical cases showed the emergence of SHs. Studies demonstrate the involvement of SHs in liver regeneration. SHs that appeared in the injured livers are not a pure population but a mixture of two distinct origins, MH-derived and hepatic-stem-cell-derived cells. The predominant cell-derived SHs depend on the proliferative capability of the remaining MHs after the injury. This review will focus on the SHs that appeared in the liver and discuss the significance of SHs in liver regeneration.
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Affiliation(s)
- Toshihiro Mitaka
- Department of Tissue Development and Regeneration, Institute of Regenerative Medicine, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (N.I.); (N.T.)
| | - Norihisa Ichinohe
- Department of Tissue Development and Regeneration, Institute of Regenerative Medicine, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (N.I.); (N.T.)
| | - Naoki Tanimizu
- Department of Tissue Development and Regeneration, Institute of Regenerative Medicine, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (N.I.); (N.T.)
- Division of Regenerative Medicine, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
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7
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Passman AM, Haughey MJ, Carlotti E, Williams MJ, Cereser B, Lin ML, Devkumar S, Gabriel JP, Gringeri E, Cillo U, Russo FP, Hoare M, ChinAleong J, Jansen M, Wright NA, Kocher HM, Huang W, Alison MR, McDonald SAC. Hepatocytes undergo punctuated expansion dynamics from a periportal stem cell niche in normal human liver. J Hepatol 2023; 79:417-432. [PMID: 37088309 DOI: 10.1016/j.jhep.2023.03.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 03/29/2023] [Accepted: 03/30/2023] [Indexed: 04/25/2023]
Abstract
BACKGROUND & AIMS While normal human liver is thought to be generally quiescent, clonal hepatocyte expansions have been observed, though neither their cellular source nor their expansion dynamics have been determined. Knowing the hepatocyte cell of origin, and their subsequent dynamics and trajectory within the human liver will provide an important basis to understand disease-associated dysregulation. METHODS Herein, we use in vivo lineage tracing and methylation sequence analysis to demonstrate normal human hepatocyte ancestry. We exploit next-generation mitochondrial sequencing to determine hepatocyte clonal expansion dynamics across spatially distinct areas of laser-captured, microdissected, clones, in tandem with computational modelling in morphologically normal human liver. RESULTS Hepatocyte clones and rare SOX9+ hepatocyte progenitors commonly associate with portal tracts and we present evidence that clones can lineage-trace with cholangiocytes, indicating the presence of a bipotential common ancestor at this niche. Within clones, we demonstrate methylation CpG sequence diversity patterns indicative of periportal not pericentral ancestral origins, indicating a portal to central vein expansion trajectory. Using spatial analysis of mitochondrial DNA variants by next-generation sequencing coupled with mathematical modelling and Bayesian inference across the portal-central axis, we demonstrate that patterns of mitochondrial DNA variants reveal large numbers of spatially restricted mutations in conjunction with limited numbers of clonal mutations. CONCLUSIONS These datasets support the existence of a periportal progenitor niche and indicate that clonal patches exhibit punctuated but slow growth, then quiesce, likely due to acute environmental stimuli. These findings crucially contribute to our understanding of hepatocyte dynamics in the normal human liver. IMPACT AND IMPLICATIONS The liver is mainly composed of hepatocytes, but we know little regarding the source of these cells or how they multiply over time within the disease-free human liver. In this study, we determine a source of new hepatocytes by combining many different lab-based methods and computational predictions to show that hepatocytes share a common cell of origin with bile ducts. Both our experimental and computational data also demonstrate hepatocyte clones are likely to expand in slow waves across the liver in a specific trajectory, but often lie dormant for many years. These data show for the first time the expansion dynamics of hepatocytes in normal liver and their cell of origin enabling the accurate measurment of changes to their dynamics that may lead to liver disease. These findings are important for researchers determining cancer risk in human liver.
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Affiliation(s)
- Adam M Passman
- Centre for Cancer Genomics and Computational Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Magnus J Haughey
- School of Mathematical Sciences, Queen Mary University of London, London, UK
| | - Emanuela Carlotti
- Centre for Cancer Genomics and Computational Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Marc J Williams
- Centre for Cancer Genomics and Computational Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Bianca Cereser
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Meng-Lay Lin
- Centre for Cancer Genomics and Computational Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Shruthi Devkumar
- Centre for Cancer Genomics and Computational Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Jonathan P Gabriel
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Enrico Gringeri
- Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
| | - Umberto Cillo
- Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
| | - Francesco Paolo Russo
- Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
| | - Matthew Hoare
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | | | - Marnix Jansen
- Department of Cellular Pathology, University College London, London, UK; UCL Cancer Centre, University College London, London, UK
| | - Nicholas A Wright
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Hermant M Kocher
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, London, UK; Cancer Tissue Bank, Barts Cancer Institute, Queen Mary University of London, London, UK; Barts and the London HPB Centre, The Royal London Hospital, Barts Health NHS Trust, London, UK
| | - Weini Huang
- School of Mathematical Sciences, Queen Mary University of London, London, UK; Group of Theoretical Biology, The State Key Laboratory of Biocontrol, School of Life Science, Sun Yat-sen University, Guangzhou, China
| | - Malcolm R Alison
- Centre for Tumour Biology, Barts Cancer Institute, Queen Mary University of London, London, UK
| | - Stuart A C McDonald
- Centre for Cancer Genomics and Computational Biology, Barts Cancer Institute, Queen Mary University of London, London, UK.
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8
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Deng Y, Zhao Z, Sheldon M, Zhao Y, Teng H, Martinez C, Zhang J, Lin C, Sun Y, Yao F, Zhu H, Ma L. LIFR recruits HGF-producing neutrophils to promote liver injury repair and regeneration. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.18.533289. [PMID: 36993315 PMCID: PMC10055204 DOI: 10.1101/2023.03.18.533289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
The molecular links between tissue repair and tumorigenesis remain elusive. Here, we report that loss of the liver tumor suppressor Lifr in mouse hepatocytes impairs the recruitment and activity of reparative neutrophils, resulting in the inhibition of liver regeneration after partial hepatectomy or toxic injuries. On the other hand, overexpression of LIFR promotes liver repair and regeneration after injury. Interestingly, LIFR deficiency or overexpression does not affect hepatocyte proliferation ex vivo or in vitro . In response to physical or chemical damage to the liver, LIFR from hepatocytes promotes the secretion of the neutrophil chemoattractant CXCL1 (which binds CXCR2 to recruit neutrophils) and cholesterol in a STAT3-dependent manner. Cholesterol, in turn, acts on the recruited neutrophils to secrete hepatocyte growth factor (HGF) to accelerate hepatocyte proliferation and regeneration. Altogether, our findings reveal a LIFR-STAT3- CXCL1-CXCR2 axis and a LIFR-STAT3-cholesterol-HGF axis that mediate hepatic damage- induced crosstalk between hepatocytes and neutrophils to repair and regenerate the liver.
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9
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Primary Hepatocyte Isolation and Cultures: Technical Aspects, Challenges and Advancements. Bioengineering (Basel) 2023; 10:bioengineering10020131. [PMID: 36829625 PMCID: PMC9952008 DOI: 10.3390/bioengineering10020131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 01/11/2023] [Accepted: 01/13/2023] [Indexed: 01/20/2023] Open
Abstract
Hepatocytes are differentiated cells that account for 80% of the hepatic volume and perform all major functions of the liver. In vivo, after an acute insult, adult hepatocytes retain their ability to proliferate and participate in liver regeneration. However, in vitro, prolonged culture and proliferation of viable and functional primary hepatocytes have remained the major and the most challenging goal of hepatocyte-based cell therapies and liver tissue engineering. The first functional cultures of rat primary hepatocytes between two layers of collagen gel, also termed as the "sandwich cultures", were reported in 1989. Since this study, several technical developments including choice of hydrogels, type of microenvironment, growth factors and culture conditions, mono or co-cultures of hepatocytes along with other supporting cell types have evolved for both rat and human primary hepatocytes in recent years. All these improvements have led to a substantial improvement in the number, life-span and hepatic functions of these cells in vitro for several downstream applications. In the current review, we highlight the details, limitations and prospects of different technical strategies being used in primary hepatocyte cultures. We discuss the use of newer biomaterials as scaffolds for efficient culture of primary hepatocytes. We also describe the derivation of mature hepatocytes from other cellular sources such as induced pluripotent stem cells, bone marrow stem cells and 3D liver organoids. Finally, we also explain the use of perfusion-based bioreactor systems and bioengineering strategies to support the long-term function of hepatocytes in 3D conditions.
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10
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Vlach M, Coppens-Exandier H, Jamin A, Berchel M, Scaviner J, Chesné C, Montier T, Jaffrès PA, Corlu A, Loyer P. Liposome-Mediated Gene Transfer in Differentiated HepaRG™ Cells: Expression of Liver Specific Functions and Application to the Cytochrome P450 2D6 Expression. Cells 2022; 11:cells11233904. [PMID: 36497165 PMCID: PMC9737581 DOI: 10.3390/cells11233904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 11/19/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
The goal of this study was to establish a procedure for gene delivery mediated by cationic liposomes in quiescent differentiated HepaRG™ human hepatoma cells. We first identified several cationic lipids promoting efficient gene transfer with low toxicity in actively dividing HepG2, HuH7, BC2 and progenitor HepaRG™ human hepatoma cells. The lipophosphoramidate Syn1-based nanovector, which allowed the highest transfection efficiencies of progenitor HepaRG™ cells, was next used to transfect differentiated HepaRG™ cells. Lipofection of these cells using Syn1-based liposome was poorly efficient most likely because the differentiated HepaRG™ cells are highly quiescent. Thus, we engineered the differentiated HepaRG™ Mitogenic medium supplement (ADD1001) that triggered robust proliferation of differentiated cells. Importantly, we characterized the phenotypical changes occurring during proliferation of differentiated HepaRG™ cells and demonstrated that mitogenic stimulation induced a partial and transient decrease in the expression levels of some liver specific functions followed by a fast recovery of the full differentiation status upon removal of the mitogens. Taking advantage of the proliferation of HepaRG™ cells, we defined lipofection conditions using Syn1-based liposomes allowing transient expression of the cytochrome P450 2D6, a phase I enzyme poorly expressed in HepaRG cells, which opens new means for drug metabolism studies in HepaRG™ cells.
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Affiliation(s)
- Manuel Vlach
- Institut NUMECAN (Nutrition Metabolisms and Cancer), F-35000 Rennes, France
- Institut AGRO Rennes-Angers, F-35042 Rennes, France
| | - Hugo Coppens-Exandier
- Institut NUMECAN (Nutrition Metabolisms and Cancer), F-35000 Rennes, France
- Biopredic International, F-35760 Saint Grégoire, France
| | - Agnès Jamin
- Biopredic International, F-35760 Saint Grégoire, France
| | - Mathieu Berchel
- Univ. Brest, CNRS, CEMCA, UMR 6521, F-29238 Brest, France
- Plateforme BiogenOuest SynNanoVect, F-44035 Nantes, France
| | - Julien Scaviner
- Institut NUMECAN (Nutrition Metabolisms and Cancer), F-35000 Rennes, France
- Biopredic International, F-35760 Saint Grégoire, France
| | | | - Tristan Montier
- Plateforme BiogenOuest SynNanoVect, F-44035 Nantes, France
- Univ. Brest, INSERM, EFS, UMR 1078, GGB-GTCA, F-29200 Brest, France
| | - Paul-Alain Jaffrès
- Univ. Brest, CNRS, CEMCA, UMR 6521, F-29238 Brest, France
- Plateforme BiogenOuest SynNanoVect, F-44035 Nantes, France
| | - Anne Corlu
- Institut NUMECAN (Nutrition Metabolisms and Cancer), F-35000 Rennes, France
- Correspondence: (A.C.); (P.L.); Tel.: +33-(02)-23233873 (P.L.)
| | - Pascal Loyer
- Institut NUMECAN (Nutrition Metabolisms and Cancer), F-35000 Rennes, France
- Plateforme BiogenOuest SynNanoVect, F-44035 Nantes, France
- Correspondence: (A.C.); (P.L.); Tel.: +33-(02)-23233873 (P.L.)
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11
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Dong R, Zhang B, Zhang X. Liver organoids: an in vitro 3D model for liver cancer study. Cell Biosci 2022; 12:152. [PMID: 36085085 PMCID: PMC9463833 DOI: 10.1186/s13578-022-00890-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 08/28/2022] [Indexed: 11/21/2022] Open
Abstract
Primary liver cancer (PLC) is the second leading cause of cancer mortality worldwide, and its morbidity unceasingly increases these years. Hepatitis B virus (HBV) infection accounted for approximately 50% of hepatocellular carcinoma (HCC) cases globally in 2015. Due to the lack of an effective model to study HBV-associated liver carcinogenesis, research has made slow progress. Organoid, an in vitro 3D model which maintains self-organization, has recently emerged as a powerful tool to investigate human diseases. In this review, we first summarize the categories and development of liver organoids. Then, we mainly focus on the functions of culture medium components and applications of organoids for HBV infection and HBV-associated liver cancer studies. Finally, we provide insights into a potential patient-derived organoid model from those infected with HBV based on our study, as well as the limitations and future applications of organoids in liver cancer research.
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12
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Robarts DR, Venneman KK, Gunewardena S, Apte U. GenX induces fibroinflammatory gene expression in primary human hepatocytes. Toxicology 2022; 477:153259. [PMID: 35850385 PMCID: PMC9741548 DOI: 10.1016/j.tox.2022.153259] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 07/12/2022] [Accepted: 07/14/2022] [Indexed: 01/09/2023]
Abstract
The toxicity induced by the persistent organic pollutants per- and polyfluoroalkyl substances (PFAS) is dependent on the length of their polyfluorinated tail. Long-chain PFASs have significantly longer half-lives and profound toxic effects compared to their short-chain counterparts. Recently, production of a short-chain PFAS substitute called ammonium 2,3,3,3-tetrafluoro-2-(heptafluoropropoxy) propanoate, also known as GenX, has significantly increased. However, the adverse health effects of GenX are not completely known. In this study, we investigated the dose-dependent effects of GenX on primary human hepatocytes (PHH). Freshly isolated PHH were treated with either 0.1, 10, or 100 μM of GenX for 48 and 96 h; then, global transcriptomic changes were determined using Human Clariom™ D arrays. GenX-induced transcriptional changes were similar at 0.1 and 10 μM doses but were significantly different at the 100 μM dose. Genes involved in lipid, monocarboxylic acid, and ketone metabolism were significantly altered following exposure of PHH at all doses. However, at the 100 μM dose, GenX caused changes in genes involved in cell proliferation, inflammation and fibrosis. A correlation analysis of concentration and differential gene expression revealed that 576 genes positively (R > 0.99) and 375 genes negatively (R < -0.99) correlated with GenX concentration. The upstream regulator analysis indicated HIF1α was inhibited at the lower doses but were activated at the higher dose. Additionally, VEGF, PPARα, STAT3, and SMAD4 signaling was induced at the 100 µM dose. These data indicate that at lower doses GenX can interfere with metabolic pathways and at higher doses can induce fibroinflammatory changes in human hepatocytes.
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Affiliation(s)
- Dakota R Robarts
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, KS, USA.
| | - Kaitlyn K Venneman
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, KS, USA.
| | - Sumedha Gunewardena
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS, USA.
| | - Udayan Apte
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, KS, USA.
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13
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Kamm DR, McCommis KS. Hepatic stellate cells in physiology and pathology. J Physiol 2022; 600:1825-1837. [PMID: 35307840 PMCID: PMC9012702 DOI: 10.1113/jp281061] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 02/04/2022] [Indexed: 11/08/2022] Open
Abstract
Hepatic stellate cells (HSCs) comprise a minor cell population in the liver but serve numerous critical functions in the normal liver and in response to injury. HSCs are primarily known for their activation upon liver injury and for producing the collagen-rich extracellular matrix in liver fibrosis. In the absence of liver injury, HSCs reside in a quiescent state, in which their main function appears to be the storage of retinoids or vitamin A-containing metabolites. Less appreciated functions of HSCs include amplifying the hepatic inflammatory response and expressing growth factors that are critical for liver development and both the initiation and termination of liver regeneration. Recent single-cell RNA sequencing studies have corroborated earlier studies indictaing that HSC activation involves a diverse array of phenotypic alterations and identified unique HSC populations. This review serves to highlight these many functions of HSCs, and to briefly describe the recent genetic tools that will help to thoroughly investigate the role of HSCs in hepatic physiology and pathology.
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Affiliation(s)
- Dakota R. Kamm
- Department of Biochemistry & Molecular Biology Saint Louis University School of Medicine St. Louis MO
| | - Kyle S. McCommis
- Department of Biochemistry & Molecular Biology Saint Louis University School of Medicine St. Louis MO
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14
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Robarts DR, McGreal SR, Umbaugh DS, Parkes WS, Kotulkar M, Abernathy S, Lee N, Jaeschke H, Gunewardena S, Whelan SA, Hanover JA, Zachara NE, Slawson C, Apte U. Regulation of Liver Regeneration by Hepatocyte O-GlcNAcylation in Mice. Cell Mol Gastroenterol Hepatol 2022; 13:1510-1529. [PMID: 35093590 PMCID: PMC9043307 DOI: 10.1016/j.jcmgh.2022.01.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 01/18/2022] [Accepted: 01/19/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND & AIMS The liver has a unique capacity to regenerate after injury in a highly orchestrated and regulated manner. Here, we report that O-GlcNAcylation, an intracellular post-translational modification regulated by 2 enzymes, O-GlcNAc transferase (OGT) and O-GlcNAcase (OGA), is a critical termination signal for liver regeneration following partial hepatectomy (PHX). METHODS We studied liver regeneration after PHX on hepatocyte specific OGT and OGA knockout mice (OGT-KO and OGA-KO), which caused a significant decrease (OGT-KO) and increase (OGA-KO) in hepatic O-GlcNAcylation, respectively. RESULTS OGA-KO mice had normal regeneration, but the OGT-KO mice exhibited substantial defects in termination of liver regeneration with increased liver injury, sustained cell proliferation resulting in significant hepatomegaly, hepatic dysplasia, and appearance of small nodules at 28 days after PHX. This was accompanied by a sustained increase in expression of cyclins along with significant induction in pro-inflammatory and pro-fibrotic gene expression in the OGT-KO livers. RNA-sequencing studies revealed inactivation of hepatocyte nuclear 4 alpha (HNF4α), the master regulator of hepatic differentiation and a known termination signal, in OGT-KO mice at 28 days after PHX, which was confirmed by both Western blot and immunohistochemistry analysis. Furthermore, a significant decrease in HNFα target genes was observed in OGT-KO mice, indicating a lack of hepatocyte differentiation following decreased hepatic O-GlcNAcylation. Immunoprecipitation experiments revealed HNF4α is O-GlcNAcylated in normal differentiated hepatocytes. CONCLUSIONS These studies show that O-GlcNAcylation plays a critical role in the termination of liver regeneration via regulation of HNF4α in hepatocytes.
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Affiliation(s)
- Dakota R Robarts
- Department of Pharmacology, Toxicology and Therapeutics, Kansas City, Kansas
| | - Steven R McGreal
- Department of Pharmacology, Toxicology and Therapeutics, Kansas City, Kansas
| | - David S Umbaugh
- Department of Pharmacology, Toxicology and Therapeutics, Kansas City, Kansas
| | - Wendena S Parkes
- Department of Pharmacology, Toxicology and Therapeutics, Kansas City, Kansas
| | - Manasi Kotulkar
- Department of Pharmacology, Toxicology and Therapeutics, Kansas City, Kansas
| | - Sarah Abernathy
- Department of Pharmacology, Toxicology and Therapeutics, Kansas City, Kansas
| | - Norman Lee
- Department of Chemistry, Boston University, Boston, Massachusetts
| | - Hartmut Jaeschke
- Department of Pharmacology, Toxicology and Therapeutics, Kansas City, Kansas
| | | | - Stephen A Whelan
- Department of Chemistry, Boston University, Boston, Massachusetts
| | - John A Hanover
- Laboratory of Cell Biochemistry and Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Natasha E Zachara
- Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Chad Slawson
- Department of Biochemistry and Molecular Biology, University of Kansas Medical Center, Kansas City, Kansas
| | - Udayan Apte
- Department of Pharmacology, Toxicology and Therapeutics, Kansas City, Kansas.
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15
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Hadjittofi C, Feretis M, Martin J, Harper S, Huguet E. Liver regeneration biology: Implications for liver tumour therapies. World J Clin Oncol 2021; 12:1101-1156. [PMID: 35070734 PMCID: PMC8716989 DOI: 10.5306/wjco.v12.i12.1101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/22/2021] [Accepted: 11/28/2021] [Indexed: 02/06/2023] Open
Abstract
The liver has remarkable regenerative potential, with the capacity to regenerate after 75% hepatectomy in humans and up to 90% hepatectomy in some rodent models, enabling it to meet the challenge of diverse injury types, including physical trauma, infection, inflammatory processes, direct toxicity, and immunological insults. Current understanding of liver regeneration is based largely on animal research, historically in large animals, and more recently in rodents and zebrafish, which provide powerful genetic manipulation experimental tools. Whilst immensely valuable, these models have limitations in extrapolation to the human situation. In vitro models have evolved from 2-dimensional culture to complex 3 dimensional organoids, but also have shortcomings in replicating the complex hepatic micro-anatomical and physiological milieu. The process of liver regeneration is only partially understood and characterized by layers of complexity. Liver regeneration is triggered and controlled by a multitude of mitogens acting in autocrine, paracrine, and endocrine ways, with much redundancy and cross-talk between biochemical pathways. The regenerative response is variable, involving both hypertrophy and true proliferative hyperplasia, which is itself variable, including both cellular phenotypic fidelity and cellular trans-differentiation, according to the type of injury. Complex interactions occur between parenchymal and non-parenchymal cells, and regeneration is affected by the status of the liver parenchyma, with differences between healthy and diseased liver. Finally, the process of termination of liver regeneration is even less well understood than its triggers. The complexity of liver regeneration biology combined with limited understanding has restricted specific clinical interventions to enhance liver regeneration. Moreover, manipulating the fundamental biochemical pathways involved would require cautious assessment, for fear of unintended consequences. Nevertheless, current knowledge provides guiding principles for strategies to optimise liver regeneration potential.
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Affiliation(s)
- Christopher Hadjittofi
- University Department of Surgery, Addenbrookes Hospital, NIHR Comprehensive Biomedical Research and Academic Health Sciences Center, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, United Kingdom
| | - Michael Feretis
- University Department of Surgery, Addenbrookes Hospital, NIHR Comprehensive Biomedical Research and Academic Health Sciences Center, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, United Kingdom
| | - Jack Martin
- University Department of Surgery, Addenbrookes Hospital, NIHR Comprehensive Biomedical Research and Academic Health Sciences Center, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, United Kingdom
| | - Simon Harper
- University Department of Surgery, Addenbrookes Hospital, NIHR Comprehensive Biomedical Research and Academic Health Sciences Center, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, United Kingdom
| | - Emmanuel Huguet
- University Department of Surgery, Addenbrookes Hospital, NIHR Comprehensive Biomedical Research and Academic Health Sciences Center, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, United Kingdom
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16
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Kitto LJ, Henderson NC. Hepatic Stellate Cell Regulation of Liver Regeneration and Repair. Hepatol Commun 2021; 5:358-370. [PMID: 33681672 PMCID: PMC7917274 DOI: 10.1002/hep4.1628] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 09/22/2020] [Accepted: 10/06/2020] [Indexed: 12/13/2022] Open
Abstract
The hepatic mesenchyme has been studied extensively in the context of liver fibrosis; however, much less is known regarding the role of mesenchymal cells during liver regeneration. As our knowledge of the cellular and molecular mechanisms driving hepatic regeneration deepens, the key role of the mesenchymal compartment during the regenerative response has been increasingly appreciated. Single-cell genomics approaches have recently uncovered both spatial and functional zonation of the hepatic mesenchyme in homeostasis and following liver injury. Here we discuss how the use of preclinical models, from in vivo mouse models to organoid-based systems, are helping to shape our understanding of the role of the mesenchyme during liver regeneration, and how these approaches should facilitate the precise identification of highly targeted, pro-regenerative therapies for patients with liver disease.
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Affiliation(s)
- Laura J. Kitto
- Centre for Inflammation ResearchThe Queen’s Medical Research InstituteEdinburgh BioQuarterUniversity of EdinburghEdinburghUnited Kingdom
| | - Neil C. Henderson
- Centre for Inflammation ResearchThe Queen’s Medical Research InstituteEdinburgh BioQuarterUniversity of EdinburghEdinburghUnited Kingdom
- MRC Human Genetics UnitInstitute of Genetics and Molecular MedicineUniversity of EdinburghEdinburghUnited Kingdom
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17
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Liver regeneration: biological and pathological mechanisms and implications. Nat Rev Gastroenterol Hepatol 2021; 18:40-55. [PMID: 32764740 DOI: 10.1038/s41575-020-0342-4] [Citation(s) in RCA: 380] [Impact Index Per Article: 126.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/24/2020] [Indexed: 02/08/2023]
Abstract
The liver is the only solid organ that uses regenerative mechanisms to ensure that the liver-to-bodyweight ratio is always at 100% of what is required for body homeostasis. Other solid organs (such as the lungs, kidneys and pancreas) adjust to tissue loss but do not return to 100% of normal. The current state of knowledge of the regenerative pathways that underlie this 'hepatostat' will be presented in this Review. Liver regeneration from acute injury is always beneficial and has been extensively studied. Experimental models that involve partial hepatectomy or chemical injury have revealed extracellular and intracellular signalling pathways that are used to return the liver to equivalent size and weight to those prior to injury. On the other hand, chronic loss of hepatocytes, which can occur in chronic liver disease of any aetiology, often has adverse consequences, including fibrosis, cirrhosis and liver neoplasia. The regenerative activities of hepatocytes and cholangiocytes are typically characterized by phenotypic fidelity. However, when regeneration of one of the two cell types fails, hepatocytes and cholangiocytes function as facultative stem cells and transdifferentiate into each other to restore normal liver structure. Liver recolonization models have demonstrated that hepatocytes have an unlimited regenerative capacity. However, in normal liver, cell turnover is very slow. All zones of the resting liver lobules have been equally implicated in the maintenance of hepatocyte and cholangiocyte populations in normal liver.
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18
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Mitochondrial Transfer by Human Mesenchymal Stromal Cells Ameliorates Hepatocyte Lipid Load in a Mouse Model of NASH. Biomedicines 2020; 8:biomedicines8090350. [PMID: 32937969 PMCID: PMC7554948 DOI: 10.3390/biomedicines8090350] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/02/2020] [Accepted: 09/10/2020] [Indexed: 12/13/2022] Open
Abstract
Mesenchymal stromal cell (MSC) transplantation ameliorated hepatic lipid load; tissue inflammation; and fibrosis in rodent animal models of non-alcoholic steatohepatitis (NASH) by as yet largely unknown mechanism(s). In a mouse model of NASH; we transplanted bone marrow-derived MSCs into the livers; which were analyzed one week thereafter. Combined metabolomic and proteomic data were applied to weighted gene correlation network analysis (WGCNA) and subsequent identification of key drivers. Livers were analyzed histologically and biochemically. The mechanisms of MSC action on hepatocyte lipid accumulation were studied in co-cultures of hepatocytes and MSCs by quantitative image analysis and immunocytochemistry. WGCNA and key driver analysis revealed that NASH caused the impairment of central carbon; amino acid; and lipid metabolism associated with mitochondrial and peroxisomal dysfunction; which was reversed by MSC treatment. MSC improved hepatic lipid metabolism and tissue homeostasis. In co-cultures of hepatocytes and MSCs; the decrease of lipid load was associated with the transfer of mitochondria from the MSCs to the hepatocytes via tunneling nanotubes (TNTs). Hence; MSCs may ameliorate lipid load and tissue perturbance by the donation of mitochondria to the hepatocytes. Thereby; they may provide oxidative capacity for lipid breakdown and thus promote recovery from NASH-induced metabolic impairment and tissue injury.
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19
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Bhat M, Pasini E, Baciu C, Angeli M, Humar A, Macparland S, Feld J, McGilvray I. The basis of liver regeneration: A systems biology approach. Ann Hepatol 2020; 18:422-428. [PMID: 31047847 DOI: 10.1016/j.aohep.2018.07.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 06/18/2018] [Accepted: 07/01/2018] [Indexed: 02/04/2023]
Abstract
INTRODUCTION Liver regeneration is a normal response to liver injury. The aim of this study was to determine the molecular basis of liver regeneration, through an integrative analysis of high-throughput gene expression datasets. METHODS We identified and curated datasets pertaining to liver regeneration from the Gene Expression Omnibus, where regenerating liver tissue was compared to healthy liver samples. The key dysregulated genes and pathways were identified using Ingenuity Pathway Analysis software. There were three eligible datasets in total. RESULTS In the early phase after hepatectomy, inflammatory pathways such as Nrf2 oxidative stress-mediated response and cytokine signaling were significantly upregulated. At peak regeneration, we discovered that cell cycle genes were predominantly expressed to promote cell proliferation. Using the Betweenness centrality algorithm, we discovered that Jun is the key central gene in liver regeneration. Calcineurin inhibitors may inhibit liver regeneration, based on predictive modeling. CONCLUSION There is a paucity of human literature in defining the molecular mechanisms of liver regeneration along a time continuum. Nonetheless, using an integrative computational analysis approach to the available high-throughput data, we determine that the oxidative stress response and cytokine signaling are key early after hepatectomy, whereas cell cycle control is important at peak regeneration. The transcription factor Jun is central to liver regeneration and a potential therapeutic target. Future studies of regeneration in humans along a time continuum are needed to better define the underlying mechanisms, and ultimately enhance care of patients with acute and chronic liver failure while awaiting transplant.
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Affiliation(s)
- Mamatha Bhat
- Multi Organ Transplant Program, University Health Network, Toronto, Canada; Division of Gastroenterology and Hepatology, University Health Network and University of Toronto, Toronto, Canada.
| | - Elisa Pasini
- Multi Organ Transplant Program, University Health Network, Toronto, Canada
| | - Cristina Baciu
- Multi Organ Transplant Program, University Health Network, Toronto, Canada
| | - Marc Angeli
- Multi Organ Transplant Program, University Health Network, Toronto, Canada
| | - Atul Humar
- Multi Organ Transplant Program, University Health Network, Toronto, Canada
| | - Sonya Macparland
- Multi Organ Transplant Program, University Health Network, Toronto, Canada; Department of Laboratory Medicine and Pathobiology, Toronto, Canada
| | - Jordan Feld
- Division of Gastroenterology and Hepatology, University Health Network and University of Toronto, Toronto, Canada; Toronto Centre for Liver Disease, University of Toronto, Ontario, Canada
| | - Ian McGilvray
- Multi Organ Transplant Program, University Health Network, Toronto, Canada; Department of Laboratory Medicine and Pathobiology, Toronto, Canada
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Manning AK, Goustin AS, Kleinbrink EL, Thepsuwan P, Cai J, Ju D, Leong A, Udler MS, Brown JB, Goodarzi MO, Rotter JI, Sladek R, Meigs JB, Lipovich L. A Long Non-coding RNA, LOC157273, Is an Effector Transcript at the Chromosome 8p23.1- PPP1R3B Metabolic Traits and Type 2 Diabetes Risk Locus. Front Genet 2020; 11:615. [PMID: 32754192 PMCID: PMC7367044 DOI: 10.3389/fgene.2020.00615] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 05/20/2020] [Indexed: 01/08/2023] Open
Abstract
AIMS Causal transcripts at genomic loci associated with type 2 diabetes (T2D) are mostly unknown. The chr8p23.1 variant rs4841132, associated with an insulin-resistant diabetes risk phenotype, lies in the second exon of a long non-coding RNA (lncRNA) gene, LOC157273, located 175 kilobases from PPP1R3B, which encodes a key protein regulating insulin-mediated hepatic glycogen storage in humans. We hypothesized that LOC157273 regulates expression of PPP1R3B in human hepatocytes. METHODS We tested our hypothesis using Stellaris fluorescent in situ hybridization to assess subcellular localization of LOC157273; small interfering RNA (siRNA) knockdown of LOC157273, followed by RT-PCR to quantify LOC157273 and PPP1R3B expression; RNA-seq to quantify the whole-transcriptome gene expression response to LOC157273 knockdown; and an insulin-stimulated assay to measure hepatocyte glycogen deposition before and after knockdown. RESULTS We found that siRNA knockdown decreased LOC157273 transcript levels by approximately 80%, increased PPP1R3B mRNA levels by 1.7-fold, and increased glycogen deposition by >50% in primary human hepatocytes. An A/G heterozygous carrier (vs. three G/G carriers) had reduced LOC157273 abundance due to reduced transcription of the A allele and increased PPP1R3B expression and glycogen deposition. CONCLUSION We show that the lncRNA LOC157273 is a negative regulator of PPP1R3B expression and glycogen deposition in human hepatocytes and a causal transcript at an insulin-resistant T2D risk locus.
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Affiliation(s)
- Alisa K. Manning
- Clinical and Translational Epidemiology Unit, Mongan Institute, Massachusetts General Hospital, Boston, MA, United States
- Department of Medicine, Harvard Medical School, Boston, MA, United States
- Programs in Metabolism and Medical & Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, United States
| | - Anton Scott Goustin
- Center for Molecular Medicine & Genetics, Wayne State University, Detroit, MI, United States
| | - Erica L. Kleinbrink
- Center for Molecular Medicine & Genetics, Wayne State University, Detroit, MI, United States
| | - Pattaraporn Thepsuwan
- Center for Molecular Medicine & Genetics, Wayne State University, Detroit, MI, United States
| | - Juan Cai
- Center for Molecular Medicine & Genetics, Wayne State University, Detroit, MI, United States
| | - Donghong Ju
- Center for Molecular Medicine & Genetics, Wayne State University, Detroit, MI, United States
- Karmanos Cancer Institute at Wayne State University, Detroit, MI, United States
| | - Aaron Leong
- Programs in Metabolism and Medical & Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, United States
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, United States
- Division of General Internal Medicine, Massachusetts General Hospital, Boston, MA, United States
| | - Miriam S. Udler
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, United States
- Diabetes Unit, Massachusetts General Hospital, Boston, MA, United States
| | - James Bentley Brown
- Department of Statistics, University of California, Berkeley, Berkeley, CA, United States
- Centre for Computational Biology, University of Birmingham, Birmingham, United Kingdom
- Computational Biosciences Group, Biosciences Area, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Mark O. Goodarzi
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Jerome I. Rotter
- The Institute for Translational Genomics and Population Sciences, Department of Pediatrics, The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, CA, United States
| | - Robert Sladek
- Department of Human Genetics, McGill University, Montréal, QC, Canada
- Department of Medicine, McGill University, Montréal, QC, Canada
- McGill University and Genome Québec Innovation Centre, Montréal, QC, Canada
| | - James B. Meigs
- Department of Medicine, Harvard Medical School, Boston, MA, United States
- Programs in Metabolism and Medical & Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, United States
- Division of General Internal Medicine, Massachusetts General Hospital, Boston, MA, United States
| | - Leonard Lipovich
- Center for Molecular Medicine & Genetics, Wayne State University, Detroit, MI, United States
- Department of Neurology, School of Medicine, Wayne State University, Detroit, MI, United States
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21
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Chen F, Wang H, Xiao J. Regulated differentiation of stem cells into an artificial 3D liver as a transplantable source. Clin Mol Hepatol 2020; 26:163-179. [PMID: 32098013 PMCID: PMC7160355 DOI: 10.3350/cmh.2019.0022n] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 02/02/2020] [Indexed: 02/07/2023] Open
Abstract
End-stage liver disease is one of the leading causes of death around the world. Since insufficient sources of transplantable liver and possible immune rejection severely hinder the wide application of conventional liver transplantation therapy, artificial three-dimensional (3D) liver culture and assembly from stem cells have become a new hope for patients with end-stage liver diseases, such as cirrhosis and liver cancer. However, the induced differentiation of single-layer or 3D-structured hepatocytes from stem cells cannot physiologically support essential liver functions due to the lack of formation of blood vessels, immune regulation, storage of vitamins, and other vital hepatic activities. Thus, there is emerging evidence showing that 3D organogenesis of artificial vascularized liver tissue from combined hepatic cell types derived from differentiated stem cells is practical for the treatment of end-stage liver diseases. The optimization of novel biomaterials, such as decellularized matrices and natural macromolecules, also strongly supports the organogenesis of 3D tissue with the desired complex structure. This review summarizes new research updates on novel differentiation protocols of stem cell-derived major hepatic cell types and the application of new supportive biomaterials. Future biological and clinical challenges of this concept are also discussed.
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Affiliation(s)
- Feng Chen
- National Key Disciplines for Infectious Diseases, Shenzhen Third People's Hospital, Shenzhen, China
| | - Hua Wang
- Department of Oncology, The First Affiliated Hospital, Institute for Liver Diseases of Anhui Medical University, Hefei, China
| | - Jia Xiao
- Clinical Medicine Research Institute, The First Affiliated Hospital of Jinan University, Guangzhou, China
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22
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Abu Rmilah A, Zhou W, Nelson E, Lin L, Amiot B, Nyberg SL. Understanding the marvels behind liver regeneration. WILEY INTERDISCIPLINARY REVIEWS-DEVELOPMENTAL BIOLOGY 2019; 8:e340. [PMID: 30924280 DOI: 10.1002/wdev.340] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 02/18/2019] [Accepted: 02/22/2019] [Indexed: 02/06/2023]
Abstract
Tissue regeneration is a process by which the remaining cells of an injured organ regrow to offset the missed cells. This field is relatively a new discipline that has been a focus of intense research by clinicians, surgeons, and scientists for decades. It constitutes the cornerstone of tissue engineering, creation of artificial organs, and generation and utilization of therapeutic stem cells to undergo transformation to different types of mature cells. Many medical experts, scientists, biologists, and bioengineers have dedicated their efforts to deeply comprehend the process of liver regeneration, striving for harnessing it to invent new therapies for liver failure. Liver regeneration after partial hepatectomy in rodents has been extensively studied by researchers for many years. It is divided into three important distinctive phases including (a) Initiation or priming phase which includes an overexpression of specific genes to prepare the liver cells for replication, (b) Proliferation phase in which the liver cells undergo a series of cycles of cell division and expansion and finally, (c) termination phase which acts as brake to stop the regenerative process and prevent the liver tissue overgrowth. These events are well controlled by cytokines, growth factors, and signaling pathways. In this review, we describe the function, embryology, and anatomy of human liver, discuss the molecular basis of liver regeneration, elucidate the hepatocyte and cholangiocyte lineages mediating this process, explain the role of hepatic progenitor cells and elaborate the developmental signaling pathways and regulatory molecules required to procure a complete restoration of hepatic lobule. This article is categorized under: Adult Stem Cells, Tissue Renewal, and Regeneration > Regeneration Signaling Pathways > Global Signaling Mechanisms Gene Expression and Transcriptional Hierarchies > Cellular Differentiation.
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Affiliation(s)
- Anan Abu Rmilah
- Department of Surgery, Division of Transplant Surgery, Mayo Clinic, Rochester, Minnesota
| | - Wei Zhou
- Department of Surgery, Division of Transplant Surgery, Mayo Clinic, Rochester, Minnesota
| | - Erek Nelson
- Department of Surgery, Division of Transplant Surgery, Mayo Clinic, Rochester, Minnesota
| | - Li Lin
- Department of Surgery, Division of Transplant Surgery, Mayo Clinic, Rochester, Minnesota
| | - Bruce Amiot
- Department of Surgery, Division of Transplant Surgery, Mayo Clinic, Rochester, Minnesota
| | - Scott L Nyberg
- Department of Surgery, Division of Transplant Surgery, Mayo Clinic, Rochester, Minnesota
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23
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Arisaka Y, Yui N. Engineering molecularly mobile polyrotaxane surfaces with heparin‐binding EGF‐like growth factors for improving hepatocyte functions. J Biomed Mater Res A 2019; 107:1080-1085. [DOI: 10.1002/jbm.a.36646] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 01/24/2019] [Indexed: 12/29/2022]
Affiliation(s)
- Yoshinori Arisaka
- Department of Organic Biomaterials, Institute of Biomaterials and BioengineeringTokyo Medical and Dental University, 2‐3‐10 Kanda‐Surugadai, Chiyoda Tokyo 101‐0062 Japan
| | - Nobuhiko Yui
- Department of Organic Biomaterials, Institute of Biomaterials and BioengineeringTokyo Medical and Dental University, 2‐3‐10 Kanda‐Surugadai, Chiyoda Tokyo 101‐0062 Japan
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24
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Manco R, Leclercq IA, Clerbaux LA. Liver Regeneration: Different Sub-Populations of Parenchymal Cells at Play Choreographed by an Injury-Specific Microenvironment. Int J Mol Sci 2018; 19:E4115. [PMID: 30567401 PMCID: PMC6321497 DOI: 10.3390/ijms19124115] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 12/05/2018] [Accepted: 12/13/2018] [Indexed: 02/06/2023] Open
Abstract
Liver regeneration is crucial for the maintenance of liver functional mass during homeostasis and diseases. In a disease context-dependent manner, liver regeneration is contributed to by hepatocytes or progenitor cells. As long as they are replicatively competent, hepatocytes are the main cell type responsible for supporting liver size homeostasisand regeneration. The concept that all hepatocytes within the lobule have the same proliferative capacity but are differentially recruited according to the localization of the wound, or whether a yet to be defined sub-population of hepatocytes supports regeneration is still debated. In a chronically or severely injured liver, hepatocytes may enter a state of replicative senescence. In such conditions, small biliary cells activate and expand, a process called ductular reaction (DR). Work in the last few decades has demonstrated that DR cells can differentiate into hepatocytes and thereby contribute to parenchymal reconstitution. In this study we will review the molecular mechanisms supporting these two processes to determine potential targets that would be amenable for therapeutic manipulation to enhance liver regeneration.
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Affiliation(s)
- Rita Manco
- Laboratory of Hepato-Gastroenterology, Institut de Recherche Expérimentale et Clinique, UCLouvain, Brussels, Belgium.
| | - Isabelle A Leclercq
- Laboratory of Hepato-Gastroenterology, Institut de Recherche Expérimentale et Clinique, UCLouvain, Brussels, Belgium.
| | - Laure-Alix Clerbaux
- Laboratory of Hepato-Gastroenterology, Institut de Recherche Expérimentale et Clinique, UCLouvain, Brussels, Belgium.
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25
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Doxazosin and Carvedilol Treatment Improves Hepatic Regeneration in a Hamster Model of Cirrhosis. BIOMED RESEARCH INTERNATIONAL 2018; 2018:4706976. [PMID: 30643808 PMCID: PMC6311259 DOI: 10.1155/2018/4706976] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 09/29/2018] [Accepted: 11/07/2018] [Indexed: 02/06/2023]
Abstract
Regulation of the mechanisms of fibrosis is an important goal in the treatment of liver cirrhosis. One mechanism is the participation of hepatic stellate cells in fibrogenesis when activated by catecholamines. Consequently, α/β adrenoblockers are proposed as an alternative treatment for chronic liver lesions such as fibrosis and/or cirrhosis and for possible liver regeneration. We herein analyzed the effect of doxazosin and carvedilol treatments during the regeneration of tissue in a hamster model of liver cirrhosis. Tissue samples were examined by H&E and PAS to evaluate tissue damage and with Sirius red to assess collagen fiber content. ALT, AST, albumin, and total proteins were examined by spectrophotometry. Determination of the levels of α-SMA and TGF-β in hepatic tissue was examined by Western blot and of the expression of TIMP-2, MMP-13, α-FP, HGF, CK-7, and c-Myc was examined by qPCR. Treatment with doxazosin or carvedilol prompted histological recovery and reduced collagen fibers in the livers of cirrhotic hamsters. The expression of TIMP-2 decreased and that of MMP-13 increases in animals treated with adrenoblockers with respect to the group with cirrhosis. Additionally, the concentration of α-SMA and TGF-β declined with both drugs with respect to placebo p<0.05. On the other hand, each drug treatment led to a distinct scenario for cell proliferation markers. Whereas doxazosin produced no irregularities in α-FP, Ki-67, and c-Myc expression, carvedilol induced an increment in the expression of these markers with respect to the intact. Hence, doxazosin and carvedilol are potential treatments for the regression of hepatic cirrhosis in hamsters in relation to the decrease of collagen in the hepatic parenchyma. However, at regeneration level we observed that doxazosin caused slight morphological changes in hepatocytes, such as its balonization without affecting the hepatic function, and on the other hand, carvedilol elicited a slight irregular expression of cell proliferation markers.
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26
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Coronado RE, Somaraki-Cormier M, Natesan S, Christy RJ, Ong JL, Halff GA. Decellularization and Solubilization of Porcine Liver for Use as a Substrate for Porcine Hepatocyte Culture: Method Optimization and Comparison. Cell Transplant 2018; 26:1840-1854. [PMID: 29390876 PMCID: PMC5802637 DOI: 10.1177/0963689717742157] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Biologic substrates, prepared by decellularizing and solubilizing tissues, have been of great interest in the tissue engineering field because of the preservation of complex biochemical constituents found in the native extracellular matrix (ECM). The integrity of the ECM is critical for cell behavior, adhesion, migration, differentiation, and proliferation that in turn affect homeostasis and tissue regeneration. Previous studies have shown that various processing methods have a distinctive way of affecting the composition of the decellularized ECM. In this study, we developed a bioactive substrate for hepatocytes in vitro, made of decellularized and solubilized liver tissue. The present work is a comparative approach of 2 different methods. First, we decellularized porcine liver tissue with ammonium hydroxide versus a sodium deoxycholate method, then characterized the decellularized tissue using various methods including double stranded DNA (dsDNA) content, DNA size, immunogenicity, and mass spectrometry. Second, we solubilized the decellularized porcine liver with hydrochloric acid versus acetic acid (AA) and characterized the resultant solubilized tissues using relevant methodologies including protein yield, immunogenicity, and bioactivity. Finally, we isolated primary porcine hepatocytes, cultured, and evaluated their bioactivity on the optimized decellularized–solubilized liver substrate. The decellularized porcine liver ECM processed by the ammonium hydroxide method and solubilized with AA displayed higher ECM integrity, low dsDNA, no evidence of intact nuclei, low human monocyte chemoattraction, and the presence of key molecules typically found in the native liver, a very important element for normal cell function. In addition, primary porcine hepatocytes showed enhanced functionality including albumin and urea production and bile canaliculi formation when cultured on the developed liver substrate compared to type I collagen.
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Affiliation(s)
| | | | - Shanmugasundaram Natesan
- 2 Combat Trauma and Burn Injury Research, US Army Institute of Surgical Research, JBSA-Fort Sam Houston, Sam Houston, TX, USA
| | - Robert J Christy
- 2 Combat Trauma and Burn Injury Research, US Army Institute of Surgical Research, JBSA-Fort Sam Houston, Sam Houston, TX, USA
| | - Joo L Ong
- 3 Biomedical Engineering San Antonio, University of Texas at San Antonio, San Antonio, TX, USA
| | - Glenn A Halff
- 4 Transplant Center San Antonio, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
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27
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Behnke K, Zhuang Y, Xu HC, Sundaram B, Reich M, Shinde PV, Huang J, Modares NF, Tumanov AV, Polz R, Scheller J, Ware CF, Pfeffer K, Keitel V, Häussinger D, Pandyra AA, Lang KS, Lang PA. B Cell-Mediated Maintenance of Cluster of Differentiation 169-Positive Cells Is Critical for Liver Regeneration. Hepatology 2018; 68:2348-2361. [PMID: 29742809 PMCID: PMC6587814 DOI: 10.1002/hep.30088] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 05/07/2018] [Indexed: 12/19/2022]
Abstract
The liver has an extraordinary capacity to regenerate through activation of key molecular pathways. However, central regulators controlling liver regeneration remain insufficiently studied. Here, we show that B cell-deficient animals failed to induce sufficient liver regeneration after partial hepatectomy (PHx). Consistently, adoptive transfer of B cells could rescue defective liver regeneration. B cell-mediated lymphotoxin beta production promoted recovery from PHx. Absence of B cells coincided with loss of splenic cluster of differentiation 169-positive (CD169+ ) macrophages. Moreover, depletion of CD169+ cells resulted in defective liver regeneration and decreased survival, which was associated with reduced hepatocyte proliferation. Mechanistically, CD169+ cells contributed to liver regeneration by inducing hepatic interleukin-6 (IL-6) production and signal transducer and activator of transcription 3 activation. Accordingly, treatment of CD169+ cell-depleted animals with IL-6/IL-6 receptor rescued liver regeneration and severe pathology following PHx. Conclusion: We identified CD169+ cells to be a central trigger for liver regeneration, by inducing key signaling pathways important for liver regeneration.
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Affiliation(s)
| | - Yuan Zhuang
- Department of Molecular Medicine II, Medical Faculty
| | - Haifeng C. Xu
- Department of Molecular Medicine II, Medical Faculty
| | | | - Maria Reich
- Department of Gastroenterology, Hepatology, and Infectious Diseases and
| | | | - Jun Huang
- Department of Molecular Medicine II, Medical Faculty
| | - Nastaran Fazel Modares
- Institute of Biochemistry and Molecular Biology II, Medical FacultyHeinrich Heine UniversityDüsseldorfGermany
| | - Alexei V. Tumanov
- Department of Microbiology, Immunology & Molecular GeneticsUniversity of Texas Health Science CenterSan AntonioTX
| | - Robin Polz
- Institute of Biochemistry and Molecular Biology II, Medical FacultyHeinrich Heine UniversityDüsseldorfGermany
| | - Jürgen Scheller
- Institute of Biochemistry and Molecular Biology II, Medical FacultyHeinrich Heine UniversityDüsseldorfGermany
| | - Carl F. Ware
- Infectious and Inflammatory Diseases Research CenterSanford Burnham Prebys Medical Discovery InstituteLa JollaCA
| | - Klaus Pfeffer
- Institute of Medical Microbiology and Hospital HygieneUniversity Hospital, Heinrich Heine UniversityDüsseldorfGermany
| | - Verena Keitel
- Department of Gastroenterology, Hepatology, and Infectious Diseases and
| | - Dieter Häussinger
- Department of Gastroenterology, Hepatology, and Infectious Diseases and
| | | | - Karl S. Lang
- Institute of Immunology, Medical FacultyUniversity of Duisburg‐EssenEssenGermany
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28
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Wang Z, Xu D, She L, Zhang Y, Wei Q, Aa J, Wang G, Liu B, Xie Y. Curcumin restrains hepatic glucose production by blocking cAMP/PKA signaling and reducing acetyl CoA accumulation in high-fat diet (HFD)-fed mice. Mol Cell Endocrinol 2018; 474:127-136. [PMID: 29499209 DOI: 10.1016/j.mce.2018.02.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 02/26/2018] [Accepted: 02/26/2018] [Indexed: 02/07/2023]
Abstract
OBJECTIVE This study is designed to investigate whether curcumin reduces excessive hepatic glucose production (HGP) via regulation of second messenger cAMP. METHODS High-fat diet (HFD)-fed mice were orally administrated of metformin (200 mg/kg) or curcumin (50 mg/kg) daily for 10 weeks. Meanwhile, we stimulated mouse primary hepatocytes with palmitate (PA). RESULTS Curcumin reduced hepatic cAMP accumulation by preserving PDE4B induction, thereby suppressing gluconeogenesis via blocking cAMP/PKA activation. Curcumin reduced lipid deposition by reducing free fatty acid uptake and prevented acetyl CoA accumulation by combating mitochondrial oxidation. As a result from inhibiting acetyl CoA accumulation, curcumin protected pyruvate dehydrogenase (PDH) activity and inhibited pyruvate carboxylase (PC), limiting the shift of mitochondrial pyruvate from oxidation to gluconeogenesis via the carboxylation. CONCLUSION Curcumin reduced cAMP accumulation by preserving PDE4B activity and inhibited acetyl CoA production by reducing mitochondrial fatty acid oxidation, thereby restraining pyruvate-driven hepatic glucose production.
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Affiliation(s)
- Zixia Wang
- Key Laboratory of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Dan Xu
- Research and Development Center, Nanjing Chia Tai Tianqing Pharmaceutical Co., Ltd., Nanjing 210038, China
| | - Linlin She
- Key Laboratory of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Yirui Zhang
- Key Laboratory of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Qingli Wei
- Key Laboratory of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Jiye Aa
- Key Laboratory of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Guangji Wang
- Key Laboratory of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Baolin Liu
- Jiangsu Key Laboratory of TCM Evaluation and Translational Research, Department of Pharmacology of Chinese Materia Medica, China Pharmaceutical University, Nanjing 211198, China.
| | - Yuan Xie
- Key Laboratory of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China.
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29
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Combined Systemic Disruption of MET and Epidermal Growth Factor Receptor Signaling Causes Liver Failure in Normal Mice. THE AMERICAN JOURNAL OF PATHOLOGY 2018; 188:2223-2235. [PMID: 30031724 DOI: 10.1016/j.ajpath.2018.06.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 05/18/2018] [Accepted: 06/19/2018] [Indexed: 12/18/2022]
Abstract
MET and epidermal growth factor receptor (EGFR) tyrosine kinases are crucial for liver regeneration and normal hepatocyte function. Recently, we demonstrated that in mice, combined inhibition of these two signaling pathways abolished liver regeneration after hepatectomy, with subsequent hepatic failure and death at 15 to 18 days after resection. Morbidity was associated with distinct and specific alterations in important downstream signaling pathways that led to decreased hepatocyte volume, reduced proliferation, and shutdown of many essential hepatocyte functions, such as fatty acid synthesis, urea cycle, and mitochondrial functions. Herein, we explore the role of MET and EGFR signaling in resting mouse livers that are not subjected to hepatectomy. Mice with combined disruption of MET and EGFR signaling were noticeably sick by 10 days and died at 12 to 14 days. Mice with combined disruption of MET and EGFR signaling mice showed decreased liver/body weight ratios, increased apoptosis in nonparenchymal cells, impaired liver metabolic functions, and activation of distinct downstream signaling pathways related to inflammation, cell death, and survival. The present study demonstrates that, in addition to controlling the regenerative response, MET and EGFR synergistically control baseline liver homeostasis in normal mice in such a way that their combined disruption leads to liver failure and death.
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30
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Khedr MEMS, Abdelmotelb AM, Bedwell TA, Shtaya A, Alzoubi MN, Abu Hilal M, Khakoo SI. Vasoactive intestinal peptide induces proliferation of human hepatocytes. Cell Prolif 2018; 51:e12482. [PMID: 30028555 DOI: 10.1111/cpr.12482] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 05/04/2018] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVES Proliferation of hepatocytes in vitro can be stimulated by growth factors such as epidermal growth factor (EGF), but the role of vasoactive intestinal peptide (VIP) remains unclear. We have investigated the effect of VIP on maintenance and proliferation of human hepatocytes. MATERIALS AND METHODS Human hepatocytes were isolated from liver specimens obtained from patients undergoing liver surgery. Treatment with VIP or EGF was started 24 h after plating and continued for 3 or 5 d. DNA replication was investigated by Bromodeoxyuridine (BrdU) incorporation and cell viability detected by MTT assay. Cell lysate was analysed by western blotting and RT-PCR. Urea and albumin secretion into the culture supernatants were measured. RESULTS VIP increased DNA replication in hepatocytes in a dose-dependant manner, with a peak response at day 3 of treatment. VIP treatment was associated with an increase in mRNA expression of antigen identified by monoclonal antibody Ki-67 (MKI-67) and Histone Cluster 3 (H3) genes. Western blotting analysis showed that VIP can induce a PKA/B-Raf dependant phosphorylation of extracellular signal-regulated kinases (ERK). Although EGF can maintain hepatocyte functions up to day 5, no marked efffect was found with VIP. CONCLUSIONS VIP induces proliferation of human hepatocytes with little or no effect on hepatocyte differentiation. Further investigation of the role of VIP is required to determine if it may ultimately support therapeutic approaches of liver disease.
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Affiliation(s)
- M E M S Khedr
- Clinical and Experimental Sciences Academic Unit, Faculty of Medicine, University of Southampton, Southampton, UK.,Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - A M Abdelmotelb
- Clinical and Experimental Sciences Academic Unit, Faculty of Medicine, University of Southampton, Southampton, UK.,Faculty of Medicine, Tanta University, Tanta, Egypt
| | - T A Bedwell
- Clinical and Experimental Sciences Academic Unit, Faculty of Medicine, University of Southampton, Southampton, UK
| | - A Shtaya
- St George's University of London, London, UK
| | - M N Alzoubi
- Clinical and Experimental Sciences Academic Unit, Faculty of Medicine, University of Southampton, Southampton, UK.,University of Jordan, Amman, Jordan.,Southampton University Hospitals NHS Trust, Southampton, UK
| | - M Abu Hilal
- Clinical and Experimental Sciences Academic Unit, Faculty of Medicine, University of Southampton, Southampton, UK.,Southampton University Hospitals NHS Trust, Southampton, UK
| | - S I Khakoo
- Clinical and Experimental Sciences Academic Unit, Faculty of Medicine, University of Southampton, Southampton, UK.,Southampton University Hospitals NHS Trust, Southampton, UK
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31
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Genetic and Chemical Screenings Identify HDAC3 as a Key Regulator in Hepatic Differentiation of Human Pluripotent Stem Cells. Stem Cell Reports 2018; 11:22-31. [PMID: 29861165 PMCID: PMC6066908 DOI: 10.1016/j.stemcr.2018.05.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 05/01/2018] [Accepted: 05/02/2018] [Indexed: 12/17/2022] Open
Abstract
Hepatocyte-like cells (HLCs) derived from human pluripotent stem cells (hPSCs) offer a promising cell resource for disease modeling and transplantation. However, differentiated HLCs exhibit an immature phenotype and comprise a heterogeneous population. Thus, a better understanding of HLC differentiation will improve the likelihood of future application. Here, by taking advantage of CRISPR-Cas9-based genome-wide screening technology and a high-throughput hPSC screening platform with a reporter readout, we identified several potential genetic regulators of HLC differentiation. By using a chemical screening approach within our platform, we also identified compounds that can further promote HLC differentiation and preserve the characteristics of in vitro cultured primary hepatocytes. Remarkably, both screenings identified histone deacetylase 3 (HDAC3) as a key regulator in hepatic differentiation. Mechanistically, HDAC3 formed a complex with liver transcriptional factors, e.g., HNF4, and co-regulated the transcriptional program during hepatic differentiation. This study highlights a broadly useful approach for studying and optimizing hPSC differentiation. Genome-wide genetic screening to identify regulators in hepatic differentiation HDAC3 regulates hepatic differentiation Small molecule CI-994 treatment improves hepatic differentiation A broadly useful approach for studying and the optimization of hPSC differentiation
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32
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Doffou M, Adams G, Bowen WC, Paranjpe S, Parihar HS, Nguyen H, Michalopoulos GK, Bhave VS. Oct4 Is Crucial for Transdifferentiation of Hepatocytes to Biliary Epithelial Cells in an In Vitro Organoid Culture Model. Gene Expr 2018; 18:51-62. [PMID: 29212575 PMCID: PMC5885146 DOI: 10.3727/105221617x15124876321401] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Hepatocyte to biliary transdifferentiation has been documented in various models of bile duct injury. In this process, mature hepatocytes transform into mature biliary epithelial cells by acquiring biliary phenotypic markers. Several signaling pathways including PI3 kinase, Notch, Hes1, Sox9, and Hippo are shown to be involved in the process. However, whether Oct4 is involved in hepatocyte to biliary transdifferentiation is unknown. We investigated the role of Oct4 in hepatocyte to biliary transdifferentiation utilizing an in vitro organoid culture system as a model of transdifferentiation. Oct4 was inhibited using adenovirus containing Oct4 shRNA. Hepatocyte-specific HNF-4α and biliary-specific HNF-1β and CK19 expression were assessed to gauge the extent of transdifferentiation. Oct4 was induced during hepatocyte to biliary transdifferentiation. Oct4 inhibition significantly downregulated the appearance of biliary cells from hepatocytes. This was accompanied by a significant downregulation of signaling pathways including Notch, Sox9, and Hippo. Our findings suggest that Oct4 is crucial for hepatocyte to biliary transdifferentiation and maturation and that it acts upstream of Notch, Sox9, and Hippo signaling in this model. This finding identifies new signaling through Oct4 in plasticity between hepatocytes and biliary epithelial cells, which can be potentially utilized to identify new strategies in chronic biliary diseases.
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Affiliation(s)
- Mboya Doffou
- *Department of Pharmaceutical Sciences, Philadelphia College of Osteopathic Medicine School of Pharmacy, Suwanee, GA, USA
| | - George Adams
- *Department of Pharmaceutical Sciences, Philadelphia College of Osteopathic Medicine School of Pharmacy, Suwanee, GA, USA
| | - William C. Bowen
- †Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Shirish Paranjpe
- †Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Harish S. Parihar
- ‡Department of Pharmacy Practice, Philadelphia College of Osteopathic Medicine School of Pharmacy, Suwanee, GA, USA
| | - Huy Nguyen
- *Department of Pharmaceutical Sciences, Philadelphia College of Osteopathic Medicine School of Pharmacy, Suwanee, GA, USA
| | | | - Vishakha S. Bhave
- *Department of Pharmaceutical Sciences, Philadelphia College of Osteopathic Medicine School of Pharmacy, Suwanee, GA, USA
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33
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Riordan S, Skouteris G, Williams R. Metabolic Activity and Clinical Efficacy of Animal and Human Hepatocytes in Bioartificial Support Systems for Acute Liver Failure. Int J Artif Organs 2018. [DOI: 10.1177/039139889802100609] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- S.M. Riordan
- Institute of Hepatology, University College London Medical School and Hospitals, London - England
| | - G.G. Skouteris
- Institute of Hepatology, University College London Medical School and Hospitals, London - England
| | - R. Williams
- Institute of Hepatology, University College London Medical School and Hospitals, London - England
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Inoue R, Kamimura K, Nagoya T, Sakai N, Yokoo T, Goto R, Ogawa K, Shinagawa-Kobayashi Y, Watanabe-Mori Y, Sakamaki A, Abe S, Kamimura H, Miyamura N, Nishina H, Terai S. Effect of a neural relay on liver regeneration in mice: activation of serotonin release from the gastrointestinal tract. FEBS Open Bio 2018; 8:449-460. [PMID: 29511622 PMCID: PMC5832978 DOI: 10.1002/2211-5463.12382] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 01/04/2018] [Accepted: 01/06/2018] [Indexed: 12/15/2022] Open
Abstract
The development of therapeutic options to promote hepatic regeneration following severe liver injury is essential. While humoral factors have been reported as mechanisms of liver regeneration, the contributions of interorgan communication to liver regeneration have not been reported. In this study, we examined the effect of a neural relay on liver regeneration via activation of serotonin release from the gastrointestinal (GI) tract. Our results demonstrated that the afferent visceral nerve from the liver activates the efferent vagus nerve from the brain, leading to activation of serotonin release from the GI tract and contributing to liver regeneration. While it is difficult to apply these results directly to human health, we believe that this study may represent a step toward developing essential therapeutics to promote liver regeneration.
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Affiliation(s)
- Ryosuke Inoue
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Japan
| | - Kenya Kamimura
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Japan
| | - Takuro Nagoya
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Japan
| | - Norihiro Sakai
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Japan
| | - Takeshi Yokoo
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Japan
| | - Ryo Goto
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Japan
| | - Kohei Ogawa
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Japan
| | - Yoko Shinagawa-Kobayashi
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Japan
| | - Yukari Watanabe-Mori
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Japan
| | - Akira Sakamaki
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Japan
| | - Satoshi Abe
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Japan
| | - Hiroteru Kamimura
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Japan
| | - Norio Miyamura
- Department of Developmental and Regenerative Biology Medical Research Institute Tokyo Medical and Dental University Japan
| | - Hiroshi Nishina
- Department of Developmental and Regenerative Biology Medical Research Institute Tokyo Medical and Dental University Japan
| | - Shuji Terai
- Division of Gastroenterology and Hepatology Graduate School of Medical and Dental Sciences Niigata University Japan
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de Lazari MGT, Pereira LX, Viana CTR, Orellano LAA, de Almeida SA, Vasconcelos AC, Ribeiro GB, Couto LC, Andrade SP, Campos PP. Induction of liver proliferation using a polymeric platform in mice. Life Sci 2018; 193:226-233. [PMID: 29097158 DOI: 10.1016/j.lfs.2017.10.040] [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: 09/13/2017] [Revised: 10/17/2017] [Accepted: 10/29/2017] [Indexed: 11/25/2022]
Abstract
AIMS Currently, animal models of liver regeneration are based on extensive lesions of the native organ and on cellular approaches using biomaterials to host growth factors and extracellular components to create artificial liver systems. We report a polymeric biological platform, minimally invasive, that induced sequential proliferation of liver parenchyma inside the scaffold in mice. MAIN METHODS Porous discs of polyether-polyurethane were surgically placed under the left liver lobe and removed at days 4, 8, 12 and 25 after implantation. No exogenous growth factors or extracellular matrix components were added to the scaffold. Histological analysis of the implants was performed to identify hepatocytes, liver vascular structures and bile ducts in the newly formed tissue. In addition, systemic markers for hepatic function were determined. KEY FINDINGS This biohybrid device provided a scaffold that was gradually filled with parenchymal and non-parenchymal liver tissue as detected by histological analysis. At day 4, the pores of the scaffold were filled with inflammatory cells and spindled-shaped like fibroblasts, and extracellular matrix components. At day 8, hepatocytes clusters, central lobular hepatic veins, portal space containing arteries, veins and biliary ducts were detected. By days 12 and 25 a liver-like structure filled 2/3 of the scaffold. Its organization resembled that of a mature liver. Serum concentration of ALT increased three-fold initially after implantation, returning gradually to control levels. SIGNIFICANCE The plain synthetic scaffold (without addition of exogenous molecules) placed under the intact left liver lobe exhibits the potential to investigate physiological mechanisms that regulate liver parenchyma proliferation.
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Affiliation(s)
| | - Luciana Xavier Pereira
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Celso Tarso Rodrigues Viana
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Laura Alejandra Ariza Orellano
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Simone Aparecida de Almeida
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Anilton Cesar Vasconcelos
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Giani Barbosa Ribeiro
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Leticia Chinait Couto
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Silvia Passos Andrade
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Paula Peixoto Campos
- Department of General Pathology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
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Macedo FI, Eid JJ, Decker M, Herschman B, Negussie E, Mittal VK. Autogenous hepatic tissue transplantation into the omentum in a novel ectopic liver regeneration murine model. J Surg Res 2017; 223:215-223. [PMID: 29433876 DOI: 10.1016/j.jss.2017.11.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 09/20/2017] [Accepted: 11/10/2017] [Indexed: 12/15/2022]
Abstract
BACKGROUND Liver regeneration involves hyperplasia and hypertrophy of hepatic cells. The capacity of macroscopic liver tissue to regenerate in ectopic sites is unknown. We aim to develop a novel in vivo model of ectopic liver survivability and regeneration and assess its functionality. METHODS Adult male Sprague-Dawley rats (n = 23) were divided into four groups: (1) single-stage (SS) group, wedge liver resection was performed, and the parenchyma was directly implanted into the omentum; (2) double-stage (DS) group, omentum pedicle was transposed over the left hepatic lobe followed by wedge liver resection along with omental flap; (3) Biogel + DS group, rats received intraperitoneal injection of inert polymer particles prior to DS; (4) Biogel + DS + portal vein ligation (PVL) group, Biogel + DS rats underwent subsequent PVL. Hepatobiliary iminodiacetic acid scintigraphy assessed bile excretion from ectopic hepatic implants. RESULTS Histologically, the scores of necrosis (P < 0.001) and fibrosis (P = 0.004) were significantly improved in rats undergoing DS procedure (groups 2, 3, and 4) compared with the SS group. Biogel rats (Biogel + DS and Biogel + DS + PVL) demonstrated statistically increased scores of bile duct neoformation (P = 0.002) compared to those without the particles (SS and DS). Scintigraphy demonstrated similar uptake of radiotracer by ectopic hepatic implants in groups 2, 3, and 4. CONCLUSIONS Omental transposition provided adequate microcirculation for proliferation of ectopic hepatic cells after liver resection. Inert polymers enhanced the regeneration by promoting differentiation of new bile ducts. The ectopic hepatic implants showed preserved function on scintigraphy. This model provides insights into the capacity of liver parenchyma to regenerate in ectopic sites and the potential as therapeutic target for cell therapy in end-stage liver disease.
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Affiliation(s)
- Francisco Igor Macedo
- Department of Surgery, Providence Hospital and Medical Centers, Michigan State University College of Human Medicine, Southfield, Michigan.
| | - Joseph J Eid
- Department of Surgery, Providence Hospital and Medical Centers, Michigan State University College of Human Medicine, Southfield, Michigan
| | - Milessa Decker
- Department of Surgery, Providence Hospital and Medical Centers, Michigan State University College of Human Medicine, Southfield, Michigan
| | - Barry Herschman
- Department of Pathology, Providence Hospital and Medical Centers, Michigan State University College of Human Medicine, Southfield, Michigan
| | - Edsa Negussie
- Department of Radiology, Providence Hospital and Medical Centers, Michigan State University College of Human Medicine, Southfield, Michigan
| | - Vijay K Mittal
- Department of Surgery, Providence Hospital and Medical Centers, Michigan State University College of Human Medicine, Southfield, Michigan
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Brückner S, Zipprich A, Hempel M, Thonig A, Schwill F, Roderfeld M, Roeb E, Christ B. Improvement of portal venous pressure in cirrhotic rat livers by systemic treatment with adipose tissue–derived mesenchymal stromal cells. Cytotherapy 2017; 19:1462-1473. [DOI: 10.1016/j.jcyt.2017.09.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 09/01/2017] [Accepted: 09/05/2017] [Indexed: 02/07/2023]
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38
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Weng YS, Chang SF, Shih MC, Tseng SH, Lai CH. Scaffold-Free Liver-On-A-Chip with Multiscale Organotypic Cultures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1701545. [PMID: 28731273 DOI: 10.1002/adma.201701545] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 06/02/2017] [Indexed: 05/18/2023]
Abstract
The considerable advances that have been made in the development of organotypic cultures have failed to overcome the challenges of expressing tissue-specific functions and complexities, especially for organs that require multitasking and complex biological processes, such as the liver. Primary liver cells are ideal biological building blocks for functional organotypic reconstruction, but are limited by their rapid loss of physiological integrity in vitro. Here the concept of lattice growth used in material science is applied to develop a tissue incubator, which provides physiological cues and controls the 3D assembly of primary cells. The cues include a biological growing template, spatial coculture, biomimetic radial flow, and circulation in a scaffold-free condition. The feasibility of recapitulating a multiscale physiological structural hierarchy, complex drug clearance, and zonal physiology from the cell to tissue level in long-term cultured liver-on-a-chip is demonstrated. These methods are promising for future applications in pharmacodynamics and personal medicine.
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Affiliation(s)
- Yu-Shih Weng
- Department of Materials Science and Engineering, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road, Hsinchu, Taiwan, 30013, ROC
- Biomedical Technology and Device Research Laboratories, Industrial Technology of Research Institute, Hsinchu, 300, Taiwan
| | - Shau-Feng Chang
- Biomedical Technology and Device Research Laboratories, Industrial Technology of Research Institute, Hsinchu, 300, Taiwan
| | - Ming-Cheng Shih
- Biomedical Technology and Device Research Laboratories, Industrial Technology of Research Institute, Hsinchu, 300, Taiwan
| | - Shih-Heng Tseng
- Biomedical Technology and Device Research Laboratories, Industrial Technology of Research Institute, Hsinchu, 300, Taiwan
| | - Chih-Huang Lai
- Department of Materials Science and Engineering, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road, Hsinchu, Taiwan, 30013, ROC
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39
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Shirahashi H, Wu J, Yamamoto N, Catana A, Wege H, Wager B, Okita K, Zern MA. Differentiation of Human and Mouse Embryonic Stem Cells along a Hepatocyte Lineage. Cell Transplant 2017; 13:197-211. [PMID: 15191158 DOI: 10.3727/000000004783984016] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Embryonic stem (ES) cells may differentiate along a hepatocyte lineage; however, currently there are no reports of culture conditions yielding high levels of hepatocyte-specific gene expression in these cells. We investigated culture conditions for differentiating ES cells into hepatocyte-like cells in vitro. Various combinations of culture media, growth and differentiation factors, and substratum precoatings were evaluated, and it was determined that a combination of Iscove's modified Dulbecco's medium with 20% fetal bovine serum, human insulin, dexamethasone, and collagen type I precoating was optimal for directing mouse ES cells along a hepatocyte lineage. Treatment of mouse ES cell with the optimal condition led to prealbumin gene expression 20% as high, and albumin synthesis 7% as high, as in mouse liver. The optimal culture condition also induced albumin gene expression in differentiated human ES cells 1% as high as in normal human hepatocytes as shown by Western blot analysis, and cells were positive for human albumin by immunocyto-chemistry. In addition, our optimal condition led to high levels of albumin gene expression in primary mouse hepatocytes after 35 days of culture, levels 10-fold higher than with other hepatocyte differentiation media. In conclusion, our optimal condition directed both mouse and human ES cells along a hepatocyte lineage. This represents the initial step in establishing cell lines that can be employed in cell-based therapeutics in humans and for toxicology and pharmacology studies.
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Affiliation(s)
- Hitoshi Shirahashi
- Transplant Research Institute, University of California, Davis Medical Center, Sacramento, CA 95817, USA
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40
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Wege H, Chui MS, Le HT, Strom SC, Zern MA. In Vitro Expansion of Human Hepatocytes is Restricted by Telomere-Dependent Replicative Aging. Cell Transplant 2017; 12:897-906. [PMID: 14763510 DOI: 10.3727/000000003771000138] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Currently, different techniques to expand human hepatocytes in vitro are being investigated to generate enough cells for liver-directed cell therapies. However, based on observations in fibroblasts and other cell types, telomere attrition limits the proliferative capacity of normal somatic cells. Therefore, we explored whether telomere-dependent replicative aging restricts the in vitro proliferation of human hepatocytes. Subpopulations of cells isolated from a neonatal liver and characterized as hepatocyte derived by RT-PCR and flow cytometry started to proliferate 5–7 days after plating and were termed proliferating human hepatocytes (PHH). Following retroviral-mediated transduction of the catalytic telomerase subunit, telomerase reverse transcriptase (hTERT), telomerase activity increased from almost undetectable levels to levels as high as in HepG2 and other telomerase-positive cell lines. As expected, untransduced PHH progressively lost telomeric repeats and arrested after 30–35 cell divisions with telomeres of less than 5 kilo bases. In comparison, telomerase-reconstituted PHH maintained elongated telomeres and continued to proliferate as shown by colorimetric assays and cell counts. In this study, telomere stabilization extended the proliferative capacity of in vitro proliferating human neonatal hepatocytes. Therefore, telomere attrition needs to be addressed when developing techniques to expand human hepatocytes.
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Affiliation(s)
- Henning Wege
- Transplant Research Institute, University of California, Davis Medical Center, Sacramento, CA 95817, USA
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41
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Kaufmann PM, Heimrath S, Kim BS, Mooney DJ. Highly Porous Polymer Matrices as a Three-Dimensional Culture System for Hepatocytes. Cell Transplant 2017; 6:463-8. [PMID: 9331497 DOI: 10.1177/096368979700600505] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Hepatocyte-based therapies (e.g., hepatocyte transplantation and extracorporeal support devices) may provide alternative therapies to treat patients with liver disease, but suitable approaches to localize these cells to a given location while maintaining liver-specific gene expression must be developed. The suitability of highly porous three-dimensional sponges fabricated from poly (l-lactic acid) [PLLA] as an hepatocyte culture system was evaluated in this study. Sponges were fabricated utilizing a particulate leaching technique, and were approximately 95% porous, with an average pore diameter of 180 μm. Hepatocytes seeded into these sponges adhered and remained viable for 14 days. However, the secretion rate of albumin from these cells, an indication of liver-specific gene expression, was low (approximately 6 pg/cell/day at day 1), and decreased steadily over the 14 days of the experiment. Coating sponges with collagen, and more preferably, immobilizing cells within the PLLA sponges with a collagen gel, led to enhanced cell survival and albumin secretion at all time points. These data suggest that porous PLLA sponges may provide a novel system for long-term culture of hepatocytes, and proper design of the system may allow the liver-specific gene expression of hepatocytes transplanted in these matrices to be enhanced.
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Affiliation(s)
- P M Kaufmann
- Department of Surgery, University of Hamburg Medical Center, Germany
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42
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Tada K, Roy-Chowdhury N, Prasad V, Kim BH, Manchikalapudi P, Fox IJ, van Duijvendijk P, Bosma PJ, Roy-Chowdhury J. Long-Term Amerlioration of Bilirubin Glucuronidation Defect in Gunn Rats by Transplanting Genetically Modified Immortalized Autologous Hepatocytes. Cell Transplant 2017; 7:607-16. [PMID: 9853589 DOI: 10.1177/096368979800700611] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Ex vivo gene therapy, in which hepatocytes are harvested from mutants, retrovirally transduced with a normal gene and transplanted back into the donor, has been used for correction of inherited metabolic defects of liver. Major drawbacks of this method include limited availability of autologous hepatocytes, inefficient retroviral transduction of primary hepatocytes, and the limited number of hepatocytes that can be transplanted safely. To obviate these problems, we transduced primary hepatocytes derived from inbred bilirubin–UDP–glucuronosyl–transferase (BUGT)-deficient Gunn rats by infection with a recombinant retrovirus expressing temperature-sensitive mutant SV40 large T antigen (tsT). The immortalized cells were then transduced with a second recombinant retrovirus expressing human B-UGT, and a clone expressing high levels of the enzyme was expanded by culturing at permissive temperature (33°C). At 37°C, tsT antigen was degraded and the cells expressed UGT activity toward bilirubin at a level approximately twice that present in normal rat liver homogenates. For seeding the cells into the liver bed, 1 × 107 cells were injected into the spleens of syngeneic Gunn rats five times at 10-day intervals. Excretion of bilirubin glucuronides in bile was demonstrated by HPLC analysis and serum bilirubin levels were reduced by 27 to 52% in 40 days after the first transplantation and remained so throughout the duration of the study (120 days). None of the transplanted Gunn rats or SCID mice transplanted with the immortalized cells developed tumors. © 1998 Elsevier Science Inc.
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Affiliation(s)
- K Tada
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10462, USA
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43
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Ledford BT, Simmons J, Chen M, Fan H, Barron C, Liu Z, Van Dyke M, He JQ. Keratose Hydrogels Promote Vascular Smooth Muscle Differentiation from C-kit-Positive Human Cardiac Stem Cells. Stem Cells Dev 2017; 26:888-900. [DOI: 10.1089/scd.2016.0351] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Benjamin T. Ledford
- Department of Biomedical Sciences and Pathobiology, College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia
| | - Jamelle Simmons
- Department of Biomedical Engineering and Mechanics, School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, Virginia
| | - Miao Chen
- Department of Biomedical Sciences and Pathobiology, College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia
| | - Huimin Fan
- Research Institute of Heart Failure, Shanghai East Hospital of Tongji University, Shanghai, People's Republic of China
| | - Catherine Barron
- Department of Biomedical Sciences and Pathobiology, College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia
| | - Zhongmin Liu
- Research Institute of Heart Failure, Shanghai East Hospital of Tongji University, Shanghai, People's Republic of China
| | - Mark Van Dyke
- Department of Biomedical Engineering and Mechanics, School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, Virginia
| | - Jia-Qiang He
- Department of Biomedical Sciences and Pathobiology, College of Veterinary Medicine, Virginia Tech, Blacksburg, Virginia
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Ishii M, Kino J, Ichinohe N, Tanimizu N, Ninomiya T, Suzuki H, Mizuguchi T, Hirata K, Mitaka T. Hepatocytic parental progenitor cells of rat small hepatocytes maintain self-renewal capability after long-term culture. Sci Rep 2017; 7:46177. [PMID: 28397810 PMCID: PMC5387414 DOI: 10.1038/srep46177] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 03/10/2017] [Indexed: 12/14/2022] Open
Abstract
The liver has a variety of functions for maintaining homeostasis, and hepatocytes play a major role. In contrast with the high regenerative capacity of mature hepatocytes (MHs) in vivo, they have not been successfully expanded ex vivo. Here we demonstrate that CD44-positive cells sorted from small hepatocyte (SH) colonies derived from a healthy adult rat liver can proliferate on a Matrigel-coated dish in serum-free chemically defined medium; in addition, a subpopulation of the cells can divide more than 50 times in a period of 17 weeks every 4-week-passage. The passage cells retained the capability to recover highly differentiated functions, such as glycogen storage, CYP activity and bile secretion. When Matrigel-treated cells from the third passage were transplanted into retrorsine/partial hepatectomy-treated rat livers, the cells engrafted to differentiate into MHs and cholangiocytes. These results suggest that long-term cultured CD44+ SHs retain hepatocytic characteristics in vitro and the capability to differentiate into hepatocytes and cholangiocytes in vivo. Thus, a newly identified subpopulation of MHs possessing the attributes of hepatocytic stem/progenitor cells can be passaged several times without losing hepatocytic characteristics.
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Affiliation(s)
- Masayuki Ishii
- Department of Tissue Development and Regeneration, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-ku, Sapporo 060-8556, Japan
- Department of Surgery, Surgical Oncology and Science, Sapporo Medical University School of Medicine, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-ku, Sapporo 060-8543, Japan
| | - Junichi Kino
- Department of Tissue Development and Regeneration, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-ku, Sapporo 060-8556, Japan
- Tokushima Research Institute, Otsuka Pharmaceutical Co. Ltd., 463-10 Kagasuno, Kawauchi-cho, Tokushima 771-0192, Japan
| | - Norihisa Ichinohe
- Department of Tissue Development and Regeneration, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-ku, Sapporo 060-8556, Japan
| | - Naoki Tanimizu
- Department of Tissue Development and Regeneration, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-ku, Sapporo 060-8556, Japan
| | - Takafumi Ninomiya
- Department of Anatomy I, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-ku, Sapporo 060-8556, Japan
| | - Hiromu Suzuki
- Department of Molecular Biology, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-ku, Sapporo 060-8556, Japan
| | - Toru Mizuguchi
- Department of Surgery, Surgical Oncology and Science, Sapporo Medical University School of Medicine, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-ku, Sapporo 060-8543, Japan
| | - Koichi Hirata
- Department of Surgery, Surgical Oncology and Science, Sapporo Medical University School of Medicine, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-ku, Sapporo 060-8543, Japan
| | - Toshihiro Mitaka
- Department of Tissue Development and Regeneration, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-ku, Sapporo 060-8556, Japan
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45
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Reversible transition between hepatocytes and liver progenitors for in vitro hepatocyte expansion. Cell Res 2017; 27:709-712. [PMID: 28374751 DOI: 10.1038/cr.2017.47] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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46
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Michalopoulos GK. Hepatostat: Liver regeneration and normal liver tissue maintenance. Hepatology 2017; 65:1384-1392. [PMID: 27997988 DOI: 10.1002/hep.28988] [Citation(s) in RCA: 279] [Impact Index Per Article: 39.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 11/30/2016] [Accepted: 11/30/2016] [Indexed: 12/13/2022]
Abstract
In contrast to all other organs, liver-to-body-weight ratio needs to be maintained always at 100% of what is required for body homeostasis. Adjustment of liver size to 100% of what is required for homeostasis has been called "hepatostat." Removal of a portion of any other organ is followed with local regeneration of a limited degree, but it never attempts to reach 100% of the original size. The complex mechanisms involved in this uniquely hepatic process encompass a variety of regenerative pathways that are specific to different types of injury. The most studied form of liver regeneration (LR) is that occurring after loss of hepatocytes in a single acute injury, such as rodent LR after two-thirds partial hepatectomy or administration of damaging chemicals (CCl4 , acetaminophen, etc.). Alternative regenerative pathways become activated when normal regeneration is thwarted and trigger the appearance of "progenitor" cells. Chronic loss of hepatocytes is associated with regenerative efforts characterized by continual hepatocyte proliferation and often has adverse consequences (development of cirrhosis or liver cancer). Even though a very few hepatocytes proliferate at any given time in normal liver, the mechanisms involved in the maintenance of liver weight by this slow process in the absence of liver injury are not as well understood. (Hepatology 2017;65:1384-1392).
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The stellate cell system (vitamin A-storing cell system). Anat Sci Int 2017; 92:387-455. [PMID: 28299597 DOI: 10.1007/s12565-017-0395-9] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 02/15/2017] [Indexed: 01/18/2023]
Abstract
Past, present, and future research into hepatic stellate cells (HSCs, also called vitamin A-storing cells, lipocytes, interstitial cells, fat-storing cells, or Ito cells) are summarized and discussed in this review. Kupffer discovered black-stained cells in the liver using the gold chloride method and named them stellate cells (Sternzellen in German) in 1876. Wake rediscovered the cells in 1971 using the same gold chloride method and various modern histological techniques including electron microscopy. Between their discovery and rediscovery, HSCs disappeared from the research history. Their identification, the establishment of cell isolation and culture methods, and the development of cellular and molecular biological techniques promoted HSC research after their rediscovery. In mammals, HSCs exist in the space between liver parenchymal cells (PCs) or hepatocytes and liver sinusoidal endothelial cells (LSECs) of the hepatic lobule, and store 50-80% of all vitamin A in the body as retinyl ester in lipid droplets in the cytoplasm. SCs also exist in extrahepatic organs such as pancreas, lung, and kidney. Hepatic (HSCs) and extrahepatic stellate cells (EHSCs) form the stellate cell (SC) system or SC family; the main storage site of vitamin A in the body is HSCs in the liver. In pathological conditions such as liver fibrosis, HSCs lose vitamin A, and synthesize a large amount of extracellular matrix (ECM) components including collagen, proteoglycan, glycosaminoglycan, and adhesive glycoproteins. The morphology of these cells also changes from the star-shaped HSCs to that of fibroblasts or myofibroblasts.
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Fukuda T, Takayama K, Hirata M, Liu YJ, Yanagihara K, Suga M, Mizuguchi H, Furue MK. Isolation and expansion of human pluripotent stem cell-derived hepatic progenitor cells by growth factor defined serum-free culture conditions. Exp Cell Res 2017; 352:333-345. [PMID: 28215634 DOI: 10.1016/j.yexcr.2017.02.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 02/14/2017] [Accepted: 02/15/2017] [Indexed: 12/30/2022]
Abstract
Limited growth potential, narrow ranges of sources, and difference in variability and functions from batch to batch of primary hepatocytes cause a problem for predicting drug-induced hepatotoxicity during drug development. Human pluripotent stem cell (hPSC)-derived hepatocyte-like cells in vitro are expected as a tool for predicting drug-induced hepatotoxicity. Several studies have already reported efficient methods for differentiating hPSCs into hepatocyte-like cells, however its differentiation process is time-consuming, labor-intensive, cost-intensive, and unstable. In order to solve this problem, expansion culture for hPSC-derived hepatic progenitor cells, including hepatic stem cells and hepatoblasts which can self-renewal and differentiate into hepatocytes should be valuable as a source of hepatocytes. However, the mechanisms of the expansion of hPSC-derived hepatic progenitor cells are not yet fully understood. In this study, to isolate hPSC-derived hepatic progenitor cells, we tried to develop serum-free growth factor defined culture conditions using defined components. Our culture conditions were able to isolate and grow hPSC-derived hepatic progenitor cells which could differentiate into hepatocyte-like cells through hepatoblast-like cells. We have confirmed that the hepatocyte-like cells prepared by our methods were able to increase gene expression of cytochrome P450 enzymes upon encountering rifampicin, phenobarbital, or omeprazole. The isolation and expansion of hPSC-derived hepatic progenitor cells in defined culture conditions should have advantages in terms of detecting accurate effects of exogenous factors on hepatic lineage differentiation, understanding mechanisms underlying self-renewal ability of hepatic progenitor cells, and stably supplying functional hepatic cells.
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Affiliation(s)
- Takayuki Fukuda
- Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation, Health and Nutrition, 7-6-8, Saito-Asagi, Ibaraki, Osaka 567-0085, Japan
| | - Kazuo Takayama
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; Laboratory of Hepatocyte Regulation, National Institutes of Biomedical Innovation, Health and Nutrition, 7-6-8, Saito-Asagi, Ibaraki, Osaka 567-0085, Japan; PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan; K-CONNEX, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501, Japan
| | - Mitsuhi Hirata
- Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation, Health and Nutrition, 7-6-8, Saito-Asagi, Ibaraki, Osaka 567-0085, Japan
| | - Yu-Jung Liu
- Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation, Health and Nutrition, 7-6-8, Saito-Asagi, Ibaraki, Osaka 567-0085, Japan
| | - Kana Yanagihara
- Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation, Health and Nutrition, 7-6-8, Saito-Asagi, Ibaraki, Osaka 567-0085, Japan
| | - Mika Suga
- Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation, Health and Nutrition, 7-6-8, Saito-Asagi, Ibaraki, Osaka 567-0085, Japan
| | - Hiroyuki Mizuguchi
- Laboratory of Biochemistry and Molecular Biology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; Laboratory of Hepatocyte Regulation, National Institutes of Biomedical Innovation, Health and Nutrition, 7-6-8, Saito-Asagi, Ibaraki, Osaka 567-0085, Japan; iPS Cell-based Research Project on Hepatic Toxicity and Metabolism, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; Global Center for Medical Engineering and Informatics, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Miho K Furue
- Laboratory of Stem Cell Cultures, National Institutes of Biomedical Innovation, Health and Nutrition, 7-6-8, Saito-Asagi, Ibaraki, Osaka 567-0085, Japan.
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Casciano JC, Duchemin NJ, Lamontagne RJ, Steel LF, Bouchard MJ. Hepatitis B virus modulates store-operated calcium entry to enhance viral replication in primary hepatocytes. PLoS One 2017; 12:e0168328. [PMID: 28151934 PMCID: PMC5289456 DOI: 10.1371/journal.pone.0168328] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 11/30/2016] [Indexed: 12/13/2022] Open
Abstract
Many viruses modulate calcium (Ca2+) signaling to create a cellular environment that is more permissive to viral replication, but for most viruses that regulate Ca2+ signaling, the mechanism underlying this regulation is not well understood. The hepatitis B virus (HBV) HBx protein modulates cytosolic Ca2+ levels to stimulate HBV replication in some liver cell lines. A chronic HBV infection is associated with life-threatening liver diseases, including hepatocellular carcinoma (HCC), and HBx modulation of cytosolic Ca2+ levels could have an important role in HBV pathogenesis. Whether HBx affects cytosolic Ca2+ in a normal hepatocyte, the natural site of an HBV infection, has not been addressed. Here, we report that HBx alters cytosolic Ca2+ signaling in cultured primary hepatocytes. We used single cell Ca2+ imaging of cultured primary rat hepatocytes to demonstrate that HBx elevates the cytosolic Ca2+ level in hepatocytes following an IP3-linked Ca2+ response; HBx effects were similar when expressed alone or in the context of replicating HBV. HBx elevation of the cytosolic Ca2+ level required extracellular Ca2+ influx and store-operated Ca2+ (SOC) entry and stimulated HBV replication in hepatocytes. We used both targeted RT-qPCR and transcriptome-wide RNAseq analyses to compare levels of SOC channel components and other Ca2+ signaling regulators in HBV-expressing and control hepatocytes and show that the transcript levels of these various proteins are not affected by HBV. We also show that HBx regulation of SOC-regulated Ca2+ accumulation is likely the consequence of HBV modulation of a SOC channel regulatory mechanism. In support of this, we link HBx enhancement of SOC-regulated Ca2+ accumulation to Ca2+ uptake by mitochondria and demonstrate that HBx stimulates mitochondrial Ca2+ uptake in primary hepatocytes. The results of our study may provide insights into viral mechanisms that affect Ca2+ signaling to regulate viral replication and virus-associated diseases.
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Affiliation(s)
- Jessica C. Casciano
- Program in Molecular and Cellular Biology and Genetics, Graduate School of Biomedical Sciences and Professional Studies, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Nicholas J. Duchemin
- Program in Molecular and Cellular Biology and Genetics, Graduate School of Biomedical Sciences and Professional Studies, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
| | - R. Jason Lamontagne
- Program in Microbiology and Immunology, Graduate School of Biomedical Sciences and Professional Studies, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Laura F. Steel
- Department of Microbiology and Immunology, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Michael J. Bouchard
- Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, Pennsylvania, United States of America
- * E-mail:
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Paranjpe S, Bowen WC, Mars WM, Orr A, Haynes MM, DeFrances MC, Liu S, Tseng GC, Tsagianni A, Michalopoulos GK. Combined systemic elimination of MET and epidermal growth factor receptor signaling completely abolishes liver regeneration and leads to liver decompensation. Hepatology 2016; 64:1711-1724. [PMID: 27397846 PMCID: PMC5074871 DOI: 10.1002/hep.28721] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 07/06/2016] [Indexed: 02/06/2023]
Abstract
UNLABELLED Receptor tyrosine kinases MET and epidermal growth factor receptor (EGFR) are critically involved in initiation of liver regeneration. Other cytokines and signaling molecules also participate in the early part of the process. Regeneration employs effective redundancy schemes to compensate for the missing signals. Elimination of any single extracellular signaling pathway only delays but does not abolish the process. Our present study, however, shows that combined systemic elimination of MET and EGFR signaling (MET knockout + EGFR-inhibited mice) abolishes liver regeneration, prevents restoration of liver mass, and leads to liver decompensation. MET knockout or simply EGFR-inhibited mice had distinct and signaling-specific alterations in Ser/Thr phosphorylation of mammalian target of rapamycin, AKT, extracellular signal-regulated kinases 1/2, phosphatase and tensin homolog, adenosine monophosphate-activated protein kinase α, etc. In the combined MET and EGFR signaling elimination of MET knockout + EGFR-inhibited mice, however, alterations dependent on either MET or EGFR combined to create shutdown of many programs vital to hepatocytes. These included decrease in expression of enzymes related to fatty acid metabolism, urea cycle, cell replication, and mitochondrial functions and increase in expression of glycolysis enzymes. There was, however, increased expression of genes of plasma proteins. Hepatocyte average volume decreased to 35% of control, with a proportional decrease in the dimensions of the hepatic lobules. Mice died at 15-18 days after hepatectomy with ascites, increased plasma ammonia, and very small livers. CONCLUSION MET and EGFR separately control many nonoverlapping signaling endpoints, allowing for compensation when only one of the signals is blocked, though the combined elimination of the signals is not tolerated; the results provide critical new information on interactive MET and EGFR signaling and the contribution of their combined absence to regeneration arrest and liver decompensation. (Hepatology 2016;64:1711-1724).
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Affiliation(s)
- Shirish Paranjpe
- Department of Pathology, School of Medicine, University of Pittsburgh
| | - William C. Bowen
- Department of Pathology, School of Medicine, University of Pittsburgh
| | - Wendy M. Mars
- Department of Pathology, School of Medicine, University of Pittsburgh
| | - Anne Orr
- Department of Pathology, School of Medicine, University of Pittsburgh
| | - Meagan M. Haynes
- Department of Pathology, School of Medicine, University of Pittsburgh
| | | | - Silvia Liu
- Department of Biostatistics, Graduate School of Public Health, University of Pittsburgh
| | - George C. Tseng
- Department of Biostatistics, Graduate School of Public Health, University of Pittsburgh
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