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Ishikawa M, Brooks AJ, Fernández-Rojo MA, Medina J, Chhabra Y, Minami S, Tunny KA, Parton RG, Vivian JP, Rossjohn J, Chikani V, Ramm GA, Ho KKY, Waters MJ. Growth Hormone Stops Excessive Inflammation After Partial Hepatectomy, Allowing Liver Regeneration and Survival Through Induction of H2-Bl/HLA-G. Hepatology 2021; 73:759-775. [PMID: 32342533 PMCID: PMC7894545 DOI: 10.1002/hep.31297] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 04/06/2020] [Accepted: 04/07/2020] [Indexed: 01/01/2023]
Abstract
BACKGROUND AND AIMS Growth hormone (GH) is important for liver regeneration after partial hepatectomy (PHx). We investigated this process in C57BL/6 mice that express different forms of the GH receptor (GHR) with deletions in key signaling domains. APPROACH AND RESULTS PHx was performed on C57BL/6 mice lacking GHR (Ghr-/- ), disabled for all GH-dependent Janus kinase 2 signaling (Box1-/- ), or lacking only GH-dependent signal transducer and activator of transcription 5 (STAT5) signaling (Ghr391-/- ), and wild-type littermates. C57BL/6 Ghr-/- mice showed striking mortality within 48 hours after PHx, whereas Box1-/- or Ghr391-/- mice survived with normal liver regeneration. Ghr-/- mortality was associated with increased apoptosis and elevated natural killer/natural killer T cell and macrophage cell markers. We identified H2-Bl, a key immunotolerance protein, which is up-regulated by PHx through a GH-mediated, Janus kinase 2-independent, SRC family kinase-dependent pathway. GH treatment was confirmed to up-regulate expression of the human homolog of H2-Bl (human leukocyte antigen G [HLA-G]) in primary human hepatocytes and in the serum of GH-deficient patients. We find that injury-associated innate immune attack by natural killer/natural killer T cell and macrophage cells are instrumental in the failure of liver regeneration, and this can be overcome in Ghr-/- mice by adenoviral delivery of H2-Bl or by infusion of HLA-G protein. Further, H2-Bl knockdown in wild-type C57BL/6 mice showed elevated markers of inflammation after PHx, whereas Ghr-/- backcrossed on a strain with high endogenous H2-Bl expression showed a high rate of survival following PHx. CONCLUSIONS GH induction of H2-Bl expression is crucial for reducing innate immune-mediated apoptosis and promoting survival after PHx in C57BL/6 mice. Treatment with HLA-G may lead to improved clinical outcomes following liver surgery or transplantation.
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Affiliation(s)
- Mayumi Ishikawa
- Institute for Molecular BioscienceThe University of QueenslandSt. LuciaQLDAustralia.,Center for Endocrinology, Diabetes and ArteriosclerosisNippon Medical School Musashikosugi HospitalKawasakiJapan
| | - Andrew J Brooks
- Institute for Molecular BioscienceThe University of QueenslandSt. LuciaQLDAustralia.,The University of Queensland Diamantina InstituteThe University of QueenslandWoolloongabbaQLDAustralia
| | - Manuel A Fernández-Rojo
- Institute for Molecular BioscienceThe University of QueenslandSt. LuciaQLDAustralia.,The University of Queensland Diamantina InstituteThe University of QueenslandWoolloongabbaQLDAustralia.,Hepatic Fibrosis GroupQIMR Berghofer Medical Research InstituteBrisbaneQLDAustralia.,School of MedicineThe University of QueenslandBrisbaneQLDAustralia.,Hepatic Regenerative Medicine LaboratoryMadrid Institute for Advanced Studies in FoodCEI UAM+CSICMadridSpain
| | - Johan Medina
- The University of Queensland Diamantina InstituteThe University of QueenslandWoolloongabbaQLDAustralia
| | - Yash Chhabra
- Institute for Molecular BioscienceThe University of QueenslandSt. LuciaQLDAustralia.,The University of Queensland Diamantina InstituteThe University of QueenslandWoolloongabbaQLDAustralia
| | - Shiro Minami
- Center for Endocrinology, Diabetes and ArteriosclerosisNippon Medical School Musashikosugi HospitalKawasakiJapan
| | - Kathryn A Tunny
- The University of Queensland Diamantina InstituteThe University of QueenslandWoolloongabbaQLDAustralia
| | - Robert G Parton
- Institute for Molecular BioscienceThe University of QueenslandSt. LuciaQLDAustralia.,Centre for Microscopy and MicroanalysisThe University of QueenslandBrisbaneQLDAustralia
| | - Julian P Vivian
- Department of Biochemistry and Molecular Biology School of Biomedical SciencesMonash UniversityClaytonVICAustralia.,Australian Research Council Centre of Excellence in Advanced Molecular ImagingMonash UniversityClaytonVICAustralia
| | - Jamie Rossjohn
- Department of Biochemistry and Molecular Biology School of Biomedical SciencesMonash UniversityClaytonVICAustralia.,Australian Research Council Centre of Excellence in Advanced Molecular ImagingMonash UniversityClaytonVICAustralia.,Institute of Infection and ImmunityCardiff University School of MedicineHeath ParkCardiffUnited Kingdom
| | - Viral Chikani
- Princess Alexandra Hospital and Faculty of MedicineThe University of QueenslandBrisbaneQLDAustralia
| | - Grant A Ramm
- Hepatic Fibrosis GroupQIMR Berghofer Medical Research InstituteBrisbaneQLDAustralia.,School of MedicineThe University of QueenslandBrisbaneQLDAustralia
| | - Ken K Y Ho
- Princess Alexandra Hospital and Faculty of MedicineThe University of QueenslandBrisbaneQLDAustralia
| | - Michael J Waters
- Institute for Molecular BioscienceThe University of QueenslandSt. LuciaQLDAustralia
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Wei X, Yang Z, Liu H, Tang T, Jiang P, Li X, Liu X. MicroRNA-125a-3p overexpression promotes liver regeneration through targeting proline-rich acidic protein 1. Ann Hepatol 2021; 19:99-106. [PMID: 31558421 DOI: 10.1016/j.aohep.2019.05.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 05/16/2019] [Accepted: 04/23/2019] [Indexed: 02/04/2023]
Abstract
INTRODUCTION AND OBJECTIVES Liver regeneration plays a valuable significance for hepatectomies, and is mainly attributed to hepatocyte proliferation. MicroRNA-125a-3p was reported to be highly associated with liver regeneration process. We studied the underlying mechanism of the functional role of miR-125a-3p in liver regeneration. MATERIALS AND METHODS The miR-125a-3p mimics and inhibitor vector were constructed and transfected into primary human liver HL-7702 cells, the transfected cell viability was detected using cell counting kit-8 (CCK-8). Cell cycle distribution was analyzed by flow cytometry. With Targetscan and OUGene prediction, the potential targets of miR-125 were verified by real-time quantitative PCR (qPCR) and luciferase reporter assays in turn. The overexpression vector of proline-rich acidic protein 1 (PRAP1) was constructed and co-transfected with miR-125a-3p mimics into HL-7702 cells, detecting the changes of proliferative capacity and cell cycle distribution. Western blot and qPCR performed to analyze gene expressions. RESULTS Overexpressed miR-125a-3p notably increased the hepatocyte viability at 48h, and decreased the number of G1 phase cells (p<0.05). However, miR-125a-3p inhibition suppressed the development of hepatocytes. PRAP1 was the target of miR-125a-3p. After co-transfection with PRAP1 vector, hepatocyte viability was decrease and the G1 phase cell number was increased (p<0.05). More importantly, overexpressed PRAP1 notably decreased the mRNA and protein levels of cyclin D1, cyclin-dependent kinase 2 (CDK2) and cell division cycle 25A (CDC25A). CONCLUSION The elevated miR-125a-3p positively correlated with hepatocyte viability and cell cycle progression due to the modulation of PRAP1, and miR-125a-3p may contribute to improving liver regeneration.
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Affiliation(s)
- Xiaolin Wei
- Department of Hepatobiliary Surgery, Shenzhen University General Hospital, Shenzhen, China; Academy of Clinical Medicine, Shenzhen University, Shenzhen, China
| | - Zhiqing Yang
- Department of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), China
| | - Hui Liu
- Department of Hepatobiliary Surgery, Shenzhen University General Hospital, Shenzhen, China; Academy of Clinical Medicine, Shenzhen University, Shenzhen, China
| | - Tengqian Tang
- Department of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), China
| | - Peng Jiang
- Department of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), China
| | - Xiaowu Li
- Department of Hepatobiliary Surgery, Shenzhen University General Hospital, Shenzhen, China; Academy of Clinical Medicine, Shenzhen University, Shenzhen, China
| | - Xiangde Liu
- Department of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), China.
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Paspala A, Papakonstantinou D, Prodromidou A, Danias N, Machairas A, Agrogiannis G, Machairas N, Zavras NJ, Patapis P, Pikoulis E. The Effects of Ursodeoxycholic Acid Pretreatment in an Experimental Setting of Extended Hepatectomy: A Feasibility Study. Cureus 2020; 12:e12120. [PMID: 33489534 PMCID: PMC7810173 DOI: 10.7759/cureus.12120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Introduction Liver regeneration is an exceptionally complex process, orchestrated by a multitude of growth factors and cytokines. Tumor necrosis factor-alpha (TNF-a) and interleukin-6 (Il-6) have a pivotal role in the initiation of the regenerative response. Ursodeoxycholic acid (UDCA) exhibits a liver protective effect that enhances liver growth after injury. The aim of the present study is to evaluate the effect of UDCA in the circulating levels of TNF-a and Il-6 in rats undergoing extended 80% hepatectomy. Materials and methods Twenty-two male Sprague Dawley rats were randomly assigned in an experimental (UDCA group) and a control group. Mice in the UDCA-group received oral pretreatment of UDCA for two weeks preoperatively at a dosage of 25 mg/kg/day. An 80% hepatic resection was performed in both groups by resecting the middle, inferior right, and left lateral liver lobes. The experiment ended 48 hours postoperatively. Results UDCA pretreatment significantly depressed circulating levels of both TNF-a and Il-6 after the conclusion of the experiment as compared to the control group (p=0.001 and p=0.01, respectively). Furthermore, TNF-a levels were significantly reduced before the institution of liver injury (p=0.02). Mice in the UDCA-group exhibited better liver growth as demonstrated by significantly increased Ki-67 and mitotic rate (p=0.04 and p=0.02, respectively). Finally, the liver regeneration rate (LRR) was significantly elevated in the experimental group (UDCA group, 54.5% vs control group, 35.8%; p=0.002) signifying enhanced liver growth kinetics. Conclusion UDCA reduces the expression of TNF-a and Il-6 during the priming phase of liver regeneration. An 80% hepatectomy model of acute liver failure exhibited enhanced liver regeneration in the experimental group, plausibly due to the immunomodulatory effects of UDCA.
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Affiliation(s)
- Anna Paspala
- Third Department of Surgery, Attikon University General Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, GRC
| | - Dimitrios Papakonstantinou
- Third Department of Surgery, Attikon University General Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, GRC
| | - Anastasia Prodromidou
- Obstetrics and Gynecology, Alexandra Hospital, National and Kapodistrian University of Athens, Athens, GRC
| | - Nick Danias
- Fourth Department of Surgery, Attikon University General Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, GRC
| | - Anastasios Machairas
- Third Department of Surgery, Attikon University General Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, GRC
| | - Georgios Agrogiannis
- First Department of Pathology, National and Kapodistrian University of Athens, Faculty of Medicine, Athens, GRC
| | - Nikolaos Machairas
- Third Department of Surgery, Attikon University General Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, GRC
| | - Nikolaos J Zavras
- Third Department of Surgery, Attikon University General Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, GRC
| | - Paulos Patapis
- Third Department of Surgery, Attikon University General Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, GRC
| | - Emmanouil Pikoulis
- Third Department of Surgery, Attikon University General Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, GRC
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Resina Draconis Reduces Acute Liver Injury and Promotes Liver Regeneration after 2/3 Partial Hepatectomy in Mice. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:2305784. [PMID: 33082819 PMCID: PMC7563078 DOI: 10.1155/2020/2305784] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/17/2020] [Accepted: 09/07/2020] [Indexed: 12/29/2022]
Abstract
Aim To investigate the protective effects and possible mechanisms of action of resina draconis (RD) on acute liver injury and liver regeneration after 2/3 partial hepatectomy (PH) in mice. Methods 2/3 PH was used to induce acute liver injury. Mice were divided into three groups: sham, vehicle + 2/3 PH, and RD + 2/3 PH. Resina draconis was administered intragastrically after 2/3 PH into the RD + 2/3 PH group, and the same volume of vehicle (1% sodium carboxymethyl cellulose) was injected into the vehicle + 2/3 PH group and sham group mice. The index of liver to body weight (ILBW) and proliferating cell nuclear antigen (PCNA) were assayed to evaluate liver regeneration. Blood and liver tissues were collected for serological and western blotting analysis. Results Resina draconis protected against 2/3 PH-induced acute severe liver injury and promoted liver regeneration as shown by significantly increased ILBW compared with that of controls. 2/3 PH increased serum AST and ALT levels, which were significantly decreased by RD treatment, while 2/3 PH decreased serum TP and ALB, which were increased by RD treatment. In the RD + 2/3 PH group, PCNA expression was significantly increased compared with the 2/3 PH group. Further, hepatocyte growth factor (HGF), TNFα, and EGFR levels were increased in the RD group at postoperative days 2 and 4 compared with the those in the 2/3 PH group. Conclusion Our results suggest that RD ameliorates acute hepatic injury and promotes liver cell proliferation, liver weight restoration, and liver function after 2/3 PH, probably via HGF, TNFα, and EGFR signaling.
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Wen Y, Lambrecht J, Ju C, Tacke F. Hepatic macrophages in liver homeostasis and diseases-diversity, plasticity and therapeutic opportunities. Cell Mol Immunol 2020; 18:45-56. [PMID: 33041338 DOI: 10.1038/s41423-020-00558-8] [Citation(s) in RCA: 318] [Impact Index Per Article: 79.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 09/14/2020] [Indexed: 02/06/2023] Open
Abstract
Macrophages, which are key cellular components of the liver, have emerged as essential players in the maintenance of hepatic homeostasis and in injury and repair processes in acute and chronic liver diseases. Upon liver injury, resident Kupffer cells (KCs) sense disturbances in homeostasis, interact with hepatic cell populations and release chemokines to recruit circulating leukocytes, including monocytes, which subsequently differentiate into monocyte-derived macrophages (MoMϕs) in the liver. Both KCs and MoMϕs contribute to both the progression and resolution of tissue inflammation and injury in various liver diseases. The diversity of hepatic macrophage subsets and their plasticity explain their different functional responses in distinct liver diseases. In this review, we highlight novel findings regarding the origins and functions of hepatic macrophages and discuss the potential of targeting macrophages as a therapeutic strategy for liver disease.
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Affiliation(s)
- Yankai Wen
- Department of Anesthesiology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Joeri Lambrecht
- Department of Hepatology and Gastroenterology, Charité University Medicine Berlin, Berlin, Germany
| | - Cynthia Ju
- Department of Anesthesiology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA.
| | - Frank Tacke
- Department of Hepatology and Gastroenterology, Charité University Medicine Berlin, Berlin, Germany.
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Pek NMQ, Liu KJ, Nichane M, Ang LT. Controversies Surrounding the Origin of Hepatocytes in Adult Livers and the in Vitro Generation or Propagation of Hepatocytes. Cell Mol Gastroenterol Hepatol 2020; 11:273-290. [PMID: 32992051 PMCID: PMC7695885 DOI: 10.1016/j.jcmgh.2020.09.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 12/21/2022]
Abstract
Epithelial cells in the liver (known as hepatocytes) are high-performance engines of myriad metabolic functions and versatile responders to liver injury. As hepatocytes metabolize amino acids, alcohol, drugs, and other substrates, they produce and are exposed to a milieu of toxins and harmful byproducts that can damage themselves. In the healthy liver, hepatocytes generally divide slowly. However, after liver injury, hepatocytes can ramp up proliferation to regenerate the liver. Yet, on extensive injury, regeneration falters, and liver failure ensues. It is therefore critical to understand the mechanisms underlying liver regeneration and, in particular, which liver cells are mobilized during liver maintenance and repair. Controversies continue to surround the very existence of hepatic stem cells and, if they exist, their spatial location, multipotency, degree of contribution to regeneration, ploidy, and susceptibility to tumorigenesis. This review discusses these controversies. Finally, we highlight how insights into hepatocyte regeneration and biology in vivo can inform in vitro studies to propagate primary hepatocytes with liver regeneration-associated signals and to generate hepatocytes de novo from pluripotent stem cells.
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Affiliation(s)
| | | | | | - Lay Teng Ang
- Correspondence Address correspondence to: Lay Teng Ang, PhD, Stanford Institute for Stem Cell Biology & Regenerative Medicine, Stanford-UC Berkeley Siebel Stem Cell Institute, Stanford University School of Medicine, Stanford, California 94305.
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Zou Y, Zhang M, Zeng D, Ruan Y, Shen L, Mu Z, Zou J, Xie C, Yang Z, Qian Z, Xu R, Li S, Kang Q, Zou H, Zhao S, Liu L, Wang K, Wang X, Zhang X. Periplaneta americana Extracts Accelerate Liver Regeneration via a Complex Network of Pathways. Front Pharmacol 2020; 11:1174. [PMID: 32848780 PMCID: PMC7413023 DOI: 10.3389/fphar.2020.01174] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 07/17/2020] [Indexed: 12/16/2022] Open
Abstract
Successful recovery from hepatectomy is partially contingent upon the rate of residual liver regeneration. The traditional Chinese medicines known as Periplaneta americana extracts (PAEs) positively influence wound healing by promoting tissue repair. However, the effect of PAEs on liver regeneration is unknown. We used a mouse liver regeneration model after 70% partial hepatectomy (PH) and a hepatocyte culture to determine whether PAEs can promote liver regeneration as effectively as skin regeneration and establish their modes of action. L02 cells were divided into serum-starved control (NC) and three PAEs (serum starvation + 0.1 mg/ml, 0.5 mg/ml, or 1 mg/ml PAEs) groups. L02 cell proliferation was assessed at 24 h, 48 h, and 72 h by CCK-8 assay. Forty male C57 mice were randomly divided into control (NC), normal saline (NS), PAEs400 (400 mg/kg/d), and PAEs800 (800 mg/kg/d) groups (n = 10 per group). The NS and both PAEs groups were administered normal saline and PAEs, respectively, by gavage for 10 days. Two hours after the tenth gavage, the NS and both PAEs groups were subjected to 70% PH and the residual liver was harvested after 48 h. The hepatic regeneration rate was evaluated and hepatocyte proliferation was estimated by immunohistochemical (IHC) staining for Ki-67. Twelve DEG libraries (three samples per group) were prepared and sequencing was performed in an Illumina HiSeq 2000 (Mus_musculus) at the Beijing Genomics Institute. The genes expressed in the liver tissues and their expression profiles were analyzed by bioinformatics. KEGG was used to annotate, enrich, and analyze the pathways. PAEs promoted hepatocyte proliferation in vitro and in vivo and accelerated mouse liver regeneration after 70% PH. The screening criteria were fold change (FC) ≥ 2 and q-value < 0.001. We identified 1,092 known DEGs in PAEs400 and PAEs800. Of these, 153 were categorized in cellular processes. The KEGG analysis revealed that the aforementioned DEGs participated in several signaling pathways closely associated with cell proliferation including PI3K-Akt, MAPK, Apelin, Wnt, FoxO, mTOR, Ras, VEGF, ErbB, Hippo, and AMPK. It was concluded that PAEs can effectively improve liver regeneration via the synergistic activation of different signaling pathways.
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Affiliation(s)
- Yingying Zou
- Department of Pathology and Pathophysiology, Kunming Medical University, Kunming, China.,Department of Hepatobiliary Surgery, Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Meiyan Zhang
- Department of Pathology and Pathophysiology, Kunming Medical University, Kunming, China
| | - Di Zeng
- Department of Pathology and Pathophysiology, Kunming Medical University, Kunming, China
| | - Yonghua Ruan
- Department of Pathology and Pathophysiology, Kunming Medical University, Kunming, China
| | - Lijuan Shen
- Department of Pathology and Pathophysiology, Kunming Medical University, Kunming, China
| | - Zhihao Mu
- Department of Pathology and Pathophysiology, Kunming Medical University, Kunming, China
| | - Jiangmeng Zou
- Department of Pathology and Pathophysiology, Kunming Medical University, Kunming, China
| | - Chenjian Xie
- Department of Pathology and Pathophysiology, Kunming Medical University, Kunming, China
| | - Zhihong Yang
- Department of Pathology and Pathophysiology, Kunming Medical University, Kunming, China
| | - Zhongyi Qian
- Department of Morphological Laboratory, Kunming Medical University, Kunming, China
| | - Ruobing Xu
- Department of Pathology and Pathophysiology, Kunming Medical University, Kunming, China
| | - Shude Li
- Department of Biochemistry and Molecular Biology, Kunming Medical University, Kunming, China
| | - Qiang Kang
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Hao Zou
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Songling Zhao
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Lixin Liu
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Kun Wang
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Xie Wang
- Department of Pathology and Pathophysiology, Kunming Medical University, Kunming, China
| | - Xiaowen Zhang
- Department of Hepatobiliary Surgery, Second Affiliated Hospital of Kunming Medical University, Kunming, China
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Sehrawat TS, Liu M, Shah VH. The knowns and unknowns of treatment for alcoholic hepatitis. Lancet Gastroenterol Hepatol 2020; 5:494-506. [PMID: 32277902 DOI: 10.1016/s2468-1253(19)30326-7] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 08/26/2019] [Accepted: 08/29/2019] [Indexed: 02/06/2023]
Abstract
Alcoholic hepatitis is an acute, inflammatory liver disease associated with high morbidity and mortality both in the short term and long term. Alcoholic hepatitis often arises in patients with a background of chronic liver disease and it is characterised by the rapid onset of jaundice and the development of myriad complications. Medical therapy for severe alcoholic hepatitis relies on corticosteroids, which have modest effectiveness. Abstinence from alcohol is critically important in patients with alcoholic hepatitis, but recidivism is high. Because of the absence of effective medical treatments for alcoholic hepatitis and alcohol dependency, there is a pressing need to develop new and effective therapeutics. Supported by promising preliminary and preclinical studies, many ongoing clinical trials of new therapies for alcoholic hepatitis are currently underway and are discussed further in this Series paper.
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Affiliation(s)
- Tejasav S Sehrawat
- Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Mengfei Liu
- Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Vijay H Shah
- Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Rochester, MN, USA.
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Al-Ghamdi TH, Atta IS. Efficacy of interleukin-6 in the induction of liver cell proliferation after hemi-hepatectomy: histopathologic and immunohistochemical study. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2020; 13:1540-1549. [PMID: 32782672 PMCID: PMC7414478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 04/14/2020] [Indexed: 06/11/2023]
Abstract
INTRODUCTION The function of Interleukin-6 (IL-6) in the regenerative process is not fully understood. The aim was to show the IL-6 role in hepatocyte regeneration by identifying the proliferative rate of hepatocytes following partial hepatectomy. MATERIAL AND METHODS Eighty male adult Sprague-Dawley rats were categorized into two equivalent groups (n = 40 rats); non-treated, and treated group with IL-6 of 35 µg/100 gm body weight according to lethality study for a four-day observation. Both groups were subjected to 70% hepatic resection. Liver specimens were taken for histo/immunohistochemical studies. Five measures were investigated histopathologically; binucleation, mitoses, thickening of the hepatic plate, ductular reaction, and presence of inflammatory cells. Ki-67 labeling index was evaluated using mouse anti-Ki-67 antibody. RESULTS In non-treated group; binucleation and multinucleation were noted in 12 cases (30%), bizarre cells with abnormal mitoses 16 cases (42%), and thickening of liver cell plate 18 cases (45%), in contrast to 32 (80%), 30 (75%) and 28 (70%), in treated group. Patches of inflammatory infiltrate were more marked in the treated group. Ki-67 labeling index was higher in the treated group (p-value 0.00001). The degree of Ki-67 reactivity in the treated group was: negative 6 (15%), weak 6 (15%), moderate 16 (40%) and strong 12 (30%) compared with 18 (45%), 13 (32.5%), 6 (15%) and strong 3 (7.5%) in non-treated group. CONCLUSION IL-6 is valuable in the induction of liver cell regeneration. Correlation with biochemical assay and flow cytometric studies is recommended.
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Affiliation(s)
| | - Ihab Shafek Atta
- Pathology Department Faculty of Medicine, Assuit, Al-Azhar UniversityEgypt
- Pathology Department Faculty of Medicine, Albaha UniversityKSA
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Liver regeneration and liver metastasis. Semin Cancer Biol 2020; 71:86-97. [PMID: 32532594 DOI: 10.1016/j.semcancer.2020.05.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/18/2020] [Accepted: 05/18/2020] [Indexed: 12/12/2022]
Abstract
Surgical resection for primary and secondary hepatic neoplasms provides the best chance of cure. Advanced surgical techniques such as portal vein embolisation, two-staged hepatectomy and associated liver partition and portal vein ligation for staged-hepatectomy (ALPPS) have facilitated hepatic resection in patients with previously unresectable, bi-lobar disease. These techniques are frequently employed to ensure favourable clinical outcomes and avoid potentially fatal post-operative complications such as small for size syndrome and post-hepatectomy liver failure. However, they rely on the innate ability of the liver to regenerate. As our knowledge of liver organogenesis, liver regeneration and hepatocarcinogenesis has expanded in recent decades it has come to light that liver regeneration may also drive tumour recurrence. Clinical studies in patients undergoing portal vein embolisation indicate that tumours may progress following the procedure in concordance with liver regeneration and hypertrophy, however overall survival in these patients has not been shown to be worse. In this article, we delve into the mechanisms underlying liver regeneration to better understand the complex ways in which this may affect tumour behaviour and ultimately inform clinical decisions.
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Xu F, Hua C, Tautenhahn HM, Dirsch O, Dahmen U. The Role of Autophagy for the Regeneration of the Aging Liver. Int J Mol Sci 2020; 21:ijms21103606. [PMID: 32443776 PMCID: PMC7279469 DOI: 10.3390/ijms21103606] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/15/2020] [Accepted: 05/18/2020] [Indexed: 02/07/2023] Open
Abstract
Age is one of the key risk factors to develop malignant diseases leading to a high incidence of hepatic tumors in the elderly population. The only curative treatment for hepatic tumors is surgical removal, which initiates liver regeneration. However, liver regeneration is impaired with aging, leading to an increased surgical risk for the elderly patient. Due to the increased risk, those patients are potentially excluded from curative surgery. Aging impairs autophagy via lipofuscin accumulation and inhibition of autophagosome formation. Autophagy is a recycling mechanism for eukaryotic cells to maintain homeostasis. Its principal function is to degrade endogenous bio-macromolecules for recycling cellular substances. A number of recent studies have shown that the reduced regenerative capacity of the aged remnant liver can be restored by promoting autophagy. Autophagy can be activated via multiple mTOR-dependent and mTOR-independent pathways. However, inducing autophagy through the mTOR-dependent pathway alone severely impairs liver regeneration. In contrast, recent observations suggest that inducing autophagy via mTOR-independent pathways might be promising in promoting liver regeneration. Conclusion: Activation of autophagy via an mTOR-independent autophagy inducer is a potential therapy for promoting liver regeneration, especially in the elderly patients at risk.
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Affiliation(s)
- Fengming Xu
- Department of General, Visceral and Vascular Surgery, Jena University Hospital, 07747 Jena, Germany; (F.X.); (C.H.); (H.-M.T.)
| | - Chuanfeng Hua
- Department of General, Visceral and Vascular Surgery, Jena University Hospital, 07747 Jena, Germany; (F.X.); (C.H.); (H.-M.T.)
| | - Hans-Michael Tautenhahn
- Department of General, Visceral and Vascular Surgery, Jena University Hospital, 07747 Jena, Germany; (F.X.); (C.H.); (H.-M.T.)
| | - Olaf Dirsch
- Institute of Pathology, Klinikum Chemnitz gGmbH, 09111 Chemnitz, Germany;
| | - Uta Dahmen
- Department of General, Visceral and Vascular Surgery, Jena University Hospital, 07747 Jena, Germany; (F.X.); (C.H.); (H.-M.T.)
- Correspondence: ; Tel.: +49-03641-9325350
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Regulation of liver regeneration by prostaglandin E 2 and thromboxane A 2 following partial hepatectomy in rats. Naunyn Schmiedebergs Arch Pharmacol 2020; 393:1437-1446. [PMID: 32162076 DOI: 10.1007/s00210-020-01848-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 03/02/2020] [Indexed: 12/17/2022]
Abstract
The implication of prostaglandin E2 (PGE2) and thromboxane A2 (TXA2) in the striking process of liver regeneration has been previously reported. However, their exact roles and downstream signals have not been utterly revealed. Therefore, the present study was conducted to explore whether inhibition of cyclooxygenase-2 (COX-2)-derived PGE2 by celecoxib and blocking of TXA2 action by seratrodast could alter the progression of liver regeneration after 70% partial hepatectomy (PHx) in rats. Celecoxib (20 mg/kg/day) and seratrodast (2 mg/kg/day) were given orally 1 h before PHx and then daily till the end of experiment (1, 3, or 7 days after the operation). Interestingly, celecoxib-treated rats showed a further increase in interleukin-6, p65 nuclear factor κB, and phosphorylated signal transducer and activator of transcription 3 as compared with PHx control rats. Furthermore, the liver contents of growth factors as well as β-catenin and cyclin D1protein expressions were also enhanced by celecoxib. Accordingly, celecoxib significantly improved hepatic proliferation as indicated by the increase in Ki67 expression and liver index. Contrariwise, seratrodast hindered the normal regeneration process and completely abolished the proliferative effect of celecoxib. In conclusion, TXA2 has a major role in liver regeneration that could greatly mediate the triggering effect of celecoxib on hepatocytes proliferation following PHx.
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63
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Ishay Y, Nachman D, Khoury T, Ilan Y. The role of the sphingolipid pathway in liver fibrosis: an emerging new potential target for novel therapies. Am J Physiol Cell Physiol 2020; 318:C1055-C1064. [PMID: 32130072 DOI: 10.1152/ajpcell.00003.2020] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Sphingolipids (SL) are a family of bioactive lipids and a major cellular membrane structural component. SLs include three main compounds: ceramide (Cer), sphingosine (Sp), and sphingosine-1-phosphate (S-1P), all of which have emerging roles in biological functions in cells, especially in the liver. They are under investigation in various liver diseases, including cirrhosis and end-stage liver disease. In this review, we provide an overview on the role of SLs in liver pathobiology and focus on their potential role in the development of hepatic fibrosis. We describe recent evidence and suggest SLs are a promising potential therapeutic target for the treatment of liver disease and fibrosis.
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Affiliation(s)
- Yuval Ishay
- Department of Internal Medicine A, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Dean Nachman
- Department of Internal Medicine A, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Tawfik Khoury
- Gastroenterology and Liver Units, Department of Medicine, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Yaron Ilan
- Gastroenterology and Liver Units, Department of Medicine, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
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Hoffmann K, Nagel AJ, Tanabe K, Fuchs J, Dehlke K, Ghamarnejad O, Lemekhova A, Mehrabi A. Markers of liver regeneration-the role of growth factors and cytokines: a systematic review. BMC Surg 2020; 20:31. [PMID: 32050952 PMCID: PMC7017496 DOI: 10.1186/s12893-019-0664-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 12/12/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Post-hepatectomy liver failure contributes significantly to postoperative mortality after liver resection. The prediction of the individual risk for liver failure is challenging. This review aimed to provide an overview of cytokine and growth factor triggered signaling pathways involved in liver regeneration after resection. METHODS MEDLINE and Cochrane databases were searched without language restrictions for articles from the time of inception of the databases till March 2019. All studies with comparative data on the effect of cytokines and growth factors on liver regeneration in animals and humans were included. RESULTS Overall 3.353 articles comprising 40 studies involving 1.498 patients and 101 animal studies were identified and met the inclusion criteria. All included trials on humans were retrospective cohort/observational studies. There was substantial heterogeneity across all included studies with respect to the analyzed cytokines and growth factors and the described endpoints. CONCLUSION High-level evidence on serial measurements of growth factors and cytokines in blood samples used to predict liver regeneration after resection is still lacking. To address the heterogeneity of patients and potential markers, high throughput serial analyses may offer a method to predict an individual's regenerative potential in the future.
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Affiliation(s)
- Katrin Hoffmann
- Department of General, Visceral and Transplant Surgery, Ruprecht Karls University, Im Neuenheimer Feld, 110 69120, Heidelberg, Germany.
| | - Alexander Johannes Nagel
- Department of General, Visceral and Transplant Surgery, Ruprecht Karls University, Im Neuenheimer Feld, 110 69120, Heidelberg, Germany
| | - Kazukata Tanabe
- Department of General, Visceral and Transplant Surgery, Ruprecht Karls University, Im Neuenheimer Feld, 110 69120, Heidelberg, Germany
| | | | - Karolin Dehlke
- Department of General, Visceral and Transplant Surgery, Ruprecht Karls University, Im Neuenheimer Feld, 110 69120, Heidelberg, Germany
| | - Omid Ghamarnejad
- Department of General, Visceral and Transplant Surgery, Ruprecht Karls University, Im Neuenheimer Feld, 110 69120, Heidelberg, Germany
| | - Anastasia Lemekhova
- Department of General, Visceral and Transplant Surgery, Ruprecht Karls University, Im Neuenheimer Feld, 110 69120, Heidelberg, Germany
| | - Arianeb Mehrabi
- Department of General, Visceral and Transplant Surgery, Ruprecht Karls University, Im Neuenheimer Feld, 110 69120, Heidelberg, Germany
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A Novel Hepatic Anti-Fibrotic Strategy Utilizing the Secretome Released from Etanercept-Synthesizing Adipose-Derived Stem Cells. Int J Mol Sci 2019; 20:ijms20246302. [PMID: 31847135 PMCID: PMC6940971 DOI: 10.3390/ijms20246302] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 12/11/2019] [Accepted: 12/11/2019] [Indexed: 12/13/2022] Open
Abstract
Tumor necrosis factor-α (TNF-α)-driven inflammatory reaction plays a crucial role in the initiation of liver fibrosis. We herein attempted to design genetically engineered adipose-derived stem cells (ASCs) producing etanercept (a potent TNF-α inhibitor), and to determine the anti-fibrotic potential of the secretome released from the etanercept-synthesizing ASCs (etanercept-secretome). First, we generated the etanercept-synthesizing ASCs by transfecting the ASCs with mini-circle plasmids containing the gene insert encoding for etanercept. We subsequently collected the secretory material released from the etanercept-synthesizing ASCs and determined its anti-fibrotic effects both in vitro (in thioacetamide [TAA]-treated AML12 and LX2 cells) and in vivo (in TAA-treated mice) models of liver fibrosis. We observed that while etanercept-secretome increased the viability of the TAA-treated AML12 hepatocytes (p = 0.021), it significantly decreased the viability of the TAA-treated LX2 HSCs (p = 0.021). In the liver of mice with liver fibrosis, intravenous administration of the etanercept-secretome induced significant reduction in the expression of both fibrosis-related and inflammation-related markers compared to the control group (all Ps < 0.05). The etanercept-secretome group also showed significantly lower serum levels of liver enzymes as well as pro-inflammatory cytokines, such as TNF-α (p = 0.020) and IL-6 (p = 0.021). Histological examination of the liver showed the highest reduction in the degree of fibrosis in the entanercept-secretome group (p = 0.006). Our results suggest that the administration of etanercept-secretome improves liver fibrosis by inhibiting TNF-α-driven inflammation in the mice with liver fibrosis. Thus, blocking TNF-α-driven inflammation at the appropriate stage of liver fibrosis could be an efficient strategy to prevent fibrosis.
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Mühl H, Bachmann M. IL-18/IL-18BP and IL-22/IL-22BP: Two interrelated couples with therapeutic potential. Cell Signal 2019; 63:109388. [PMID: 31401146 DOI: 10.1016/j.cellsig.2019.109388] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/07/2019] [Accepted: 08/07/2019] [Indexed: 02/06/2023]
Abstract
Interleukin (IL)-18 and IL-22 are key components of cytokine networks that play a decisive role in (pathological) inflammation, host defense, and tissue regeneration. Tight regulation of cytokine-driven signaling, inflammation, and immunoactivation is supposed to enable nullification of a given deleterious trigger without mediating overwhelming collateral tissue damage or even activating a cancerous face of regeneration. In fact, feedback regulation by specific cytokine opponents is regarded as a major means by which the immune system is kept in balance. Herein, we shine a light on the interplay between IL-18 and IL-22 and their opponents IL-18 binding protein (IL-18BP) and IL-22BP in order to provide integrated information on their biology, pathophysiological significance, and prospect as targets and/or instruments of therapeutic intervention.
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Affiliation(s)
- Heiko Mühl
- pharmazentrum frankfurt/ZAFES, University Hospital Goethe University Frankfurt am Main, Theodor-Stern- Kai 7, 60590 Frankfurt am Main, Germany.
| | - Malte Bachmann
- pharmazentrum frankfurt/ZAFES, University Hospital Goethe University Frankfurt am Main, Theodor-Stern- Kai 7, 60590 Frankfurt am Main, Germany
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67
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B-Cell Activating Factor Enhances Hepatocyte-Driven Angiogenesis via B-Cell CLL/Lymphoma 10/Nuclear Factor-KappaB Signaling during Liver Regeneration. Int J Mol Sci 2019; 20:ijms20205022. [PMID: 31658764 PMCID: PMC6829427 DOI: 10.3390/ijms20205022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 10/08/2019] [Accepted: 10/09/2019] [Indexed: 02/06/2023] Open
Abstract
B-cell activating factor (BAFF) is found to be associated with the histological severity of nonalcoholic steatohepatitis (NASH). BAFF was also found to have a protective role in hepatic steatosis via down regulating the expression of steatogenesis genes and enhancing steatosis in hepatocytes through BAFF-R. However, the roles of BAFF during liver regeneration are not well defined. In this study, C57/B6 mice with 70% partial hepatectomy were used as a liver regeneration model. BAFF expression was determined by enzyme immunoassay, and anti-BAFF-neutralizing antibodies were administered to confirm the effects of BAFF on liver regeneration. Western blotting, immunohistochemistry, and florescence staining determined the expression of B-cell CCL/lymphoma 10 (BCL10). The angiogenesis promoting capability was evaluated after the transfection of cells with siRNA targeting BCL10 expression, and the role of NF-κB was assessed. The results revealed that the BAFF and BCL10 levels were upregulated after partial hepatectomy. Treatment with anti-BAFF-neutralizing antibodies caused death in mice that were subjected to 70% partial hepatectomy within 72 h. In vitro, recombinant BAFF protein did not enhance hepatocyte proliferation; however, transfection with BCL10 siRNA arrested hepatocytes at the G2/M phase. Interestingly, conditioned medium from BAFF-treated hepatocytes enhanced angiogenesis and endothelial cell proliferation. Moreover, Matrix metalloproteinase-9 (MMP-9), Fibroblast growth factor 4 (FGF4), and Interleukin-8 (IL-8) proteins were upregulated by BAFF through BCL10/NF-κB signaling. In mice that were treated with anti-BAFF-neutralizing antibodies, the microvessel density (MVD) of the remaining liver tissues and liver regeneration were both reduced. Taken together, our study demonstrated that an increased expression of BAFF and activation of BCL10/NF-κB signaling were involved in hepatocyte-driven angiogenesis and survival during liver regeneration.
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68
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Pibiri M. Liver regeneration in aged mice: new insights. Aging (Albany NY) 2019; 10:1801-1824. [PMID: 30157472 PMCID: PMC6128415 DOI: 10.18632/aging.101524] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 08/10/2018] [Indexed: 02/06/2023]
Abstract
The regenerative capacity of the liver after resection is reduced with aging. Recent studies on rodents revealed that both intracellular and extracellular factors are involved in the impairment of liver mass recovery during aging. Among the intracellular factors, age-dependent decrease of BubR1 (budding uninhibited by benzimidazole-related 1), YAP (Yes-associated protein) and SIRT1 (Sirtuin-1) have been associated to dampening of tissue reconstitution and inhibition of cell cycle genes following partial hepatectomy. Extra-cellular factors, such as age-dependent changes in hepatic stellate cells affect liver regeneration through inhibition of progenitor cells and reduction of liver perfusion. Furthermore, chronic release of pro-inflammatory proteins by senescent cells (SASP) affects cell proliferation suggesting that senescent cell clearance might improve tissue regeneration. Accordingly, young plasma restores liver regeneration in aged animals through autophagy re-establishment. This review will discuss how intracellular and extracellular factors cooperate to guarantee a proper liver regeneration and the possible causes of its impairment during aging. The possibility that an improvement of the liver regenerative capacity in elderly might be achieved through elimination of senescent cells via autophagy or by administration of direct mitogenic agents devoid of cytotoxicity will also be entertained.
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Affiliation(s)
- Monica Pibiri
- Department of Biomedical Sciences, Oncology and Molecular Pathology Unit, University of Cagliari, Cagliari 09124, Italy
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69
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Fonseca RC, Bassi GS, Brito CC, Rosa LB, David BA, Araújo AM, Nóbrega N, Diniz AB, Jesus ICG, Barcelos LS, Fontes MAP, Bonaventura D, Kanashiro A, Cunha TM, Guatimosim S, Cardoso VN, Fernandes SOA, Menezes GB, de Lartigue G, Oliveira AG. Vagus nerve regulates the phagocytic and secretory activity of resident macrophages in the liver. Brain Behav Immun 2019; 81:444-454. [PMID: 31271871 PMCID: PMC7826199 DOI: 10.1016/j.bbi.2019.06.041] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 06/24/2019] [Accepted: 06/26/2019] [Indexed: 02/08/2023] Open
Abstract
The gastrointestinal (GI) tract harbors commensal microorganisms as well as invasive bacteria, toxins and other pathogens and, therefore, plays a pivotal barrier and immunological role against pathogenic agents. The vagus nerve is an important regulator of the GI tract-associated immune system, having profound effects on inflammatory responses. Among GI tract organs, the liver is a key site of immune surveillance, as it has a large population of resident macrophages and receives the blood drained from the guts through the hepatic portal circulation. Although it is widely accepted that the hepatic tissue is a major target for vagus nerve fibers, the role of this neural circuit in liver immune functions is still poorly understood. Herein we used in vivo imaging techniques, including confocal microscopy and scintigraphy, to show that vagus nerve stimulation increases the phagocytosis activity by resident macrophages in the liver, even on the absence of an immune challenge. The activation of this neural circuit in a non-lethal model of sepsis optimized the removal of bacteria in the liver and resulted in the production of anti-inflammatory and pro-regenerative cytokines. Our findings provide new insights into the neural regulation of the immune system in the liver.
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Affiliation(s)
- Roberta Cristelli Fonseca
- Universidade Federal de Minas Gerais, Department of Physiology and Biophysics, Belo Horizonte, Minas Gerais, Brazil,Universidade Federal de Minas Gerais, Liver Center, Belo Horizonte, Minas Gerais, Brazil
| | - Gabriel Shimizu Bassi
- Universidade de São Paulo, Ribeirão Preto Medical School, Department of Pharmacology, Ribeirão Preto, Brazil
| | - Camila Carvalho Brito
- Universidade Federal de Minas Gerais, Department of Physiology and Biophysics, Belo Horizonte, Minas Gerais, Brazil,Universidade Federal de Minas Gerais, Liver Center, Belo Horizonte, Minas Gerais, Brazil
| | - Lorena Barreto Rosa
- Universidade Federal de Minas Gerais, Department of Physiology and Biophysics, Belo Horizonte, Minas Gerais, Brazil,Universidade Federal de Minas Gerais, Liver Center, Belo Horizonte, Minas Gerais, Brazil
| | - Bruna Araújo David
- Universidade Federal de Minas Gerais, Department of Morphology, Belo Horizonte, Minas Gerais, Brazil
| | - Alan Moreira Araújo
- University of Florida, College of Pharmacy, Department of Pharmacodynamics, Gainesville, FL, USA
| | - Natália Nóbrega
- Universidade Federal de Minas Gerais, Department of Pharmacology, Belo Horizonte, Minas Gerais, Brazil
| | - Ariane Barros Diniz
- Universidade Federal de Minas Gerais, Department of Morphology, Belo Horizonte, Minas Gerais, Brazil
| | - Itamar Couto Guedes Jesus
- Universidade Federal de Minas Gerais, Department of Physiology and Biophysics, Belo Horizonte, Minas Gerais, Brazil
| | - Lucíola Silva Barcelos
- Universidade Federal de Minas Gerais, Department of Physiology and Biophysics, Belo Horizonte, Minas Gerais, Brazil
| | - Marco Antônio Peliky Fontes
- Universidade Federal de Minas Gerais, Department of Physiology and Biophysics, Belo Horizonte, Minas Gerais, Brazil
| | - Daniella Bonaventura
- Universidade Federal de Minas Gerais, Department of Pharmacology, Belo Horizonte, Minas Gerais, Brazil
| | - Alexandre Kanashiro
- Universidade de São Paulo, Ribeirão Preto Medical School, Department of Pharmacology, Ribeirão Preto, Brazil
| | - Thiago Mattar Cunha
- Universidade de São Paulo, Ribeirão Preto Medical School, Department of Pharmacology, Ribeirão Preto, Brazil
| | - Sílvia Guatimosim
- Universidade Federal de Minas Gerais, Department of Physiology and Biophysics, Belo Horizonte, Minas Gerais, Brazil
| | - Valbert Nascimento Cardoso
- Universidade Federal de Minas Gerais, College of Pharmacy, Department of Clinical and Toxicological Analysis, Belo Horizonte, Minas Gerais, Brazil
| | - Simone Odília Antunes Fernandes
- Universidade Federal de Minas Gerais, College of Pharmacy, Department of Clinical and Toxicological Analysis, Belo Horizonte, Minas Gerais, Brazil
| | - Gustavo Batista Menezes
- Universidade Federal de Minas Gerais, Department of Morphology, Belo Horizonte, Minas Gerais, Brazil
| | - Guillaume de Lartigue
- University of Florida, College of Pharmacy, Department of Pharmacodynamics, Gainesville, FL, USA
| | - André Gustavo Oliveira
- Universidade Federal de Minas Gerais, Department of Physiology and Biophysics, Belo Horizonte, Minas Gerais, Brazil; Universidade Federal de Minas Gerais, Liver Center, Belo Horizonte, Minas Gerais, Brazil.
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Schutgens F, Clevers H. Human Organoids: Tools for Understanding Biology and Treating Diseases. ANNUAL REVIEW OF PATHOLOGY-MECHANISMS OF DISEASE 2019; 15:211-234. [PMID: 31550983 DOI: 10.1146/annurev-pathmechdis-012419-032611] [Citation(s) in RCA: 249] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Organoids are in vitro-cultured three-dimensional structures that recapitulate key aspects of in vivo organs. They can be established from pluripotent stem cells and from adult stem cells, the latter being the subject of this review. Organoids derived from adult stem cells exploit the tissue regeneration process that is driven by these cells, and they can be established directly from the healthy or diseased epithelium of many organs. Organoids are amenable to any experimental approach that has been developed for cell lines. Applications in experimental biology involve the modeling of tissue physiology and disease, including malignant, hereditary, and infectious diseases. Biobanks of patient-derived tumor organoids are used in drug development research, and they hold promise for developing personalized and regenerative medicine. In this review, we discuss the applications of adult stem cell-derived organoids in the laboratory and the clinic.
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Affiliation(s)
- Frans Schutgens
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences, 3584 CT Utrecht, The Netherlands; .,Department of Pathology, Amsterdam University Medical Centers, Location VU Medical Center, 1081 HV Amsterdam, The Netherlands
| | - Hans Clevers
- Hubrecht Institute, Royal Netherlands Academy of Arts and Sciences, 3584 CT Utrecht, The Netherlands; .,Princess Máxima Center for Pediatric Oncology, 3584 CS Utrecht, The Netherlands
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71
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Inflammasome-Mediated Inflammation in Liver Ischemia-Reperfusion Injury. Cells 2019; 8:cells8101131. [PMID: 31547621 PMCID: PMC6829519 DOI: 10.3390/cells8101131] [Citation(s) in RCA: 145] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 09/19/2019] [Accepted: 09/21/2019] [Indexed: 12/16/2022] Open
Abstract
Ischemia-reperfusion injury is an important cause of liver damage occurring during surgical procedures including hepatic resection and liver transplantation, and represents the main underlying cause of graft dysfunction and liver failure post-transplantation. To date, ischemia-reperfusion injury is an unsolved problem in clinical practice. In this context, inflammasome activation, recently described during ischemia-reperfusion injury, might be a potential therapeutic target to mitigate the clinical problems associated with liver transplantation and hepatic resections. The present review aims to summarize the current knowledge in inflammasome-mediated inflammation, describing the experimental models used to understand the molecular mechanisms of inflammasome in liver ischemia-reperfusion injury. In addition, a clear distinction between steatotic and non-steatotic livers and between warm and cold ischemia-reperfusion injury will be discussed. Finally, the most updated therapeutic strategies, as well as some of the scientific controversies in the field will be described. Such information may be useful to guide the design of better experimental models, as well as the effective therapeutic strategies in liver surgery and transplantation that can succeed in achieving its clinical application.
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72
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Peng WC, Logan CY, Fish M, Anbarchian T, Aguisanda F, Álvarez-Varela A, Wu P, Jin Y, Zhu J, Li B, Grompe M, Wang B, Nusse R. Inflammatory Cytokine TNFα Promotes the Long-Term Expansion of Primary Hepatocytes in 3D Culture. Cell 2019; 175:1607-1619.e15. [PMID: 30500539 DOI: 10.1016/j.cell.2018.11.012] [Citation(s) in RCA: 201] [Impact Index Per Article: 40.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 08/15/2018] [Accepted: 11/12/2018] [Indexed: 12/17/2022]
Abstract
In the healthy adult liver, most hepatocytes proliferate minimally. However, upon physical or chemical injury to the liver, hepatocytes proliferate extensively in vivo under the direction of multiple extracellular cues, including Wnt and pro-inflammatory signals. Currently, liver organoids can be generated readily in vitro from bile-duct epithelial cells, but not hepatocytes. Here, we show that TNFα, an injury-induced inflammatory cytokine, promotes the expansion of hepatocytes in 3D culture and enables serial passaging and long-term culture for more than 6 months. Single-cell RNA sequencing reveals broad expression of hepatocyte markers. Strikingly, in vitro-expanded hepatocytes engrafted, and significantly repopulated, the injured livers of Fah-/- mice. We anticipate that tissue repair signals can be harnessed to promote the expansion of otherwise hard-to-culture cell-types, with broad implications.
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Affiliation(s)
- Weng Chuan Peng
- Howard Hughes Medical Institute, Department of Developmental Biology, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.
| | - Catriona Y Logan
- Howard Hughes Medical Institute, Department of Developmental Biology, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Matt Fish
- Howard Hughes Medical Institute, Department of Developmental Biology, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Teni Anbarchian
- Howard Hughes Medical Institute, Department of Developmental Biology, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Francis Aguisanda
- Howard Hughes Medical Institute, Department of Developmental Biology, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Adrián Álvarez-Varela
- Howard Hughes Medical Institute, Department of Developmental Biology, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Peng Wu
- Howard Hughes Medical Institute, Department of Developmental Biology, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Pediatrics, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Yinhua Jin
- Howard Hughes Medical Institute, Department of Developmental Biology, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Junjie Zhu
- Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA
| | - Bin Li
- Oregon Stem Cell Center, Oregon Health and Science University, Portland, OR 97239, USA
| | - Markus Grompe
- Oregon Stem Cell Center, Oregon Health and Science University, Portland, OR 97239, USA
| | - Bruce Wang
- Department of Medicine and Liver Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Roel Nusse
- Howard Hughes Medical Institute, Department of Developmental Biology, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.
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73
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Khan MGM, Ghosh A, Variya B, Santharam MA, Kandhi R, Ramanathan S, Ilangumaran S. Hepatocyte growth control by SOCS1 and SOCS3. Cytokine 2019; 121:154733. [PMID: 31154249 DOI: 10.1016/j.cyto.2019.154733] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 05/18/2019] [Accepted: 05/21/2019] [Indexed: 02/06/2023]
Abstract
The extraordinary capacity of the liver to regenerate following injury is dependent on coordinated and regulated actions of cytokines and growth factors. Whereas hepatocyte growth factor (HGF) and epidermal growth factor (EGF) are direct mitogens to hepatocytes, inflammatory cytokines such as TNFα and IL-6 also play essential roles in the liver regeneration process. These cytokines and growth factors activate different signaling pathways in a sequential manner to elicit hepatocyte proliferation. The kinetics and magnitude of these hepatocyte-activating stimuli are tightly regulated to ensure restoration of a functional liver mass without causing uncontrolled cell proliferation. Hepatocyte proliferation can become deregulated under conditions of chronic inflammation, leading to accumulation of genetic aberrations and eventual neoplastic transformation. Among the control mechanisms that regulate hepatocyte proliferation, negative feedback inhibition by the 'suppressor of cytokine signaling (SOCS)' family proteins SOCS1 and SOCS3 play crucial roles in attenuating cytokine and growth factor signaling. Loss of SOCS1 or SOCS3 in the mouse liver increases the rate of liver regeneration and renders hepatocytes susceptible to neoplastic transformation. The frequent epigenetic repression of the SOCS1 and SOCS3 genes in hepatocellular carcinoma has stimulated research in understanding the growth regulatory mechanisms of SOCS1 and SOCS3 in hepatocytes. Whereas SOCS3 is implicated in regulating JAK-STAT signaling induced by IL-6 and attenuating EGFR signaling, SOCS1 is crucial for the regulation of HGF signaling. These two proteins also module the functions of certain key proteins that control the cell cycle. In this review, we discuss the current understanding of the functions of SOCS1 and SOCS3 in controlling hepatocyte proliferation, and its implications to liver health and disease.
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Affiliation(s)
- Md Gulam Musawwir Khan
- Department of Anatomy and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Amit Ghosh
- Department of Anatomy and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Bhavesh Variya
- Department of Anatomy and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Madanraj Appiya Santharam
- Department of Anatomy and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Rajani Kandhi
- Department of Anatomy and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Sheela Ramanathan
- Department of Anatomy and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada
| | - Subburaj Ilangumaran
- Department of Anatomy and Cell Biology, Faculty of Medicine and Health Sciences, Université de Sherbrooke, Sherbrooke J1H 5N4, Québec, Canada.
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74
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Prophylactic TNF blockade uncouples efficacy and toxicity in dual CTLA-4 and PD-1 immunotherapy. Nature 2019; 569:428-432. [PMID: 31043740 DOI: 10.1038/s41586-019-1162-y] [Citation(s) in RCA: 294] [Impact Index Per Article: 58.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 03/27/2019] [Indexed: 11/08/2022]
Abstract
Combined PD-1 and CTLA-4-targeted immunotherapy with nivolumab and ipilimumab is effective against melanoma, renal cell carcinoma and non-small-cell lung cancer1-3. However, this comes at the cost of frequent, serious immune-related adverse events, necessitating a reduction in the recommended dose of ipilimumab that is given to patients4. In mice, co-treatment with surrogate anti-PD-1 and anti-CTLA-4 monoclonal antibodies is effective in transplantable cancer models, but also exacerbates autoimmune colitis. Here we show that treating mice with clinically available TNF inhibitors concomitantly with combined CTLA-4 and PD-1 immunotherapy ameliorates colitis and, in addition, improves anti-tumour efficacy. Notably, TNF is upregulated in the intestine of patients suffering from colitis after dual ipilimumab and nivolumab treatment. We created a model in which Rag2-/-Il2rg-/- mice were adoptively transferred with human peripheral blood mononuclear cells, causing graft-versus-host disease that was further exacerbated by ipilimumab and nivolumab treatment. When human colon cancer cells were xenografted into these mice, prophylactic blockade of human TNF improved colitis and hepatitis in xenografted mice, and moreover, immunotherapeutic control of xenografted tumours was retained. Our results provide clinically feasible strategies to dissociate efficacy and toxicity in the use of combined immune checkpoint blockade for cancer immunotherapy.
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75
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Clemens MM, McGill MR, Apte U. Mechanisms and biomarkers of liver regeneration after drug-induced liver injury. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2019; 85:241-262. [PMID: 31307589 DOI: 10.1016/bs.apha.2019.03.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Liver, the major metabolic organ in the body, is known for its remarkable capacity to regenerate. Whereas partial hepatectomy (PHx) is a popular model for the study of liver regeneration, the liver also regenerates after acute injury, but less is known about the mechanisms that drive it. Recent studies have shown that liver regeneration is critical for survival in acute liver failure (ALF), which is usually due to drug-induced liver injury (DILI). It is sometimes assumed that the signaling pathways involved are similar to those that regulate regeneration after PHx, but there are likely to be critical differences. A better understanding of regeneration mechanisms after DILI and hepatotoxicity in general could lead to development of new therapies for ALF patients and new biomarkers to predict patient outcome. Here, we summarize what is known about the mechanisms of liver regeneration and repair after hepatotoxicity. We also review the literature in the emerging field of liver regeneration biomarkers.
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Affiliation(s)
- Melissa M Clemens
- Interdisciplinary Biomedical Sciences Graduate Program, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - Mitchell R McGill
- Department of Environmental and Occupational Health, Fay W. Boozman College of Public Health, University of Arkansas for Medical Sciences, Little Rock, AR, United States; Department of Pharmacology and Toxicology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, United States.
| | - Udayan Apte
- Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, KS, United States
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76
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Berkhout L, Barikbin R, Schiller B, Ravichandran G, Krech T, Neumann K, Sass G, Tiegs G. Deletion of tumour necrosis factor α receptor 1 elicits an increased TH17 immune response in the chronically inflamed liver. Sci Rep 2019; 9:4232. [PMID: 30862875 PMCID: PMC6414655 DOI: 10.1038/s41598-019-40324-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 01/24/2019] [Indexed: 02/06/2023] Open
Abstract
Tumour necrosis factor α receptor 1 (TNFR1) activation is known to induce cell death, inflammation, and fibrosis but also hepatocyte survival and regeneration. The multidrug resistance protein 2 knockout (Mdr2-/) mice are a model for chronic hepatitis and inflammation-associated hepatocellular carcinoma (HCC) development. This study analysed how the absence of TNFR1 mediated signalling shapes cytokine and chemokine production, immune cell recruitment and ultimately influences liver injury and fibrotic tissue remodelling in the Mdr2-/- mouse model. We show that Tnfr1-/-/Mdr2-/- mice displayed increased plasma levels of ALT, ALP, and bilirubin as well as a significantly higher collagen content, and markers of fibrosis than Mdr2-/- mice. The expression profile of inflammatory cytokines (Il1b, Il23, Tgfb1, Il17a), chemokines (Ccl2, Cxcl1, Cx3cl1) and chemokine receptors (Ccr6, Cxcr6, Cx3cr1) in livers of Tnfr1-/-/Mdr2-/- mice indicated TH17 cell infiltration. Flow cytometric analysis confirmed that the aggravated tissue injury in Tnfr1-/-/Mdr2-/- mice strongly correlated with increased hepatic recruitment of TH17 cells and enhanced IL-17 production in the injured liver. Moreover, we observed increased hepatic activation of RIPK3 in Tnfr1-/-/Mdr2-/- mice, which was not related to necroptotic cell death. Rather, frequencies of infiltrating CX3CR1+ monocytes increased over time in livers of Tnfr1-/-/Mdr2-/- mice, which expressed significantly higher levels of Ripk3 than those of Mdr2-/- mice. Overall, we conclude that the absence of TNFR1-mediated signalling did not improve the pathological phenotype of Mdr2-/- mice. It instead caused enhanced infiltration of TH17 cells and CX3CR1+ monocytes into the injured tissue, which was accompanied by increased RIPK3 activation and IL-17 production.
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Affiliation(s)
- Laura Berkhout
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Roja Barikbin
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Birgit Schiller
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Gevitha Ravichandran
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Till Krech
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Katrin Neumann
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Gabriele Sass
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- California Institute for Medical Research, San Jose, CA, USA
| | - Gisa Tiegs
- Institute of Experimental Immunology and Hepatology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
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77
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Martins R, Carlos AR, Braza F, Thompson JA, Bastos-Amador P, Ramos S, Soares MP. Disease Tolerance as an Inherent Component of Immunity. Annu Rev Immunol 2019; 37:405-437. [PMID: 30673535 DOI: 10.1146/annurev-immunol-042718-041739] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Pathogenic organisms exert a negative impact on host health, revealed by the clinical signs of infectious diseases. Immunity limits the severity of infectious diseases through resistance mechanisms that sense and target pathogens for containment, killing, or expulsion. These resistance mechanisms are viewed as the prevailing function of immunity. Under pathophysiologic conditions, however, immunity arises in response to infections that carry health and fitness costs to the host. Therefore, additional defense mechanisms are required to limit these costs, before immunity becomes operational as well as thereafter to avoid immunopathology. These are tissue damage control mechanisms that adjust the metabolic output of host tissues to different forms of stress and damage associated with infection. Disease tolerance is the term used to define this defense strategy, which does not exert a direct impact on pathogens but is essential to limit the health and fitness costs of infection. Under this argument, we propose that disease tolerance is an inherent component of immunity.
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Affiliation(s)
- Rui Martins
- Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal;
| | | | - Faouzi Braza
- Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal;
| | | | | | - Susana Ramos
- Instituto Gulbenkian de Ciência, 2780-156 Oeiras, Portugal;
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78
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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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79
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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: 18] [Impact Index Per Article: 3.0] [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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80
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Yang R, Tonnesseen TI. DAMPs and sterile inflammation in drug hepatotoxicity. Hepatol Int 2018; 13:42-50. [PMID: 30474802 DOI: 10.1007/s12072-018-9911-9] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 11/02/2018] [Indexed: 12/15/2022]
Abstract
Drug hepatotoxicity is the leading cause of acute liver failure (ALF) in the developed countries. The early diagnosis and treatment are still problematic, and one important reason is the lack of reliable mechanistic biomarkers and therapeutic targets; therefore, searching for new biomarkers and therapeutic targets is urgent. Drug hepatotoxicity induces severe liver cells damage and death. Dead and damaged cells release endogenous damage-associated molecular patterns (DAMPs). Increased circulating levels of DAMPs (HMGB1, histones and DNA) can reflect the severity of drug hepatotoxicity. Elevated plasma HMGB1 concentrations can serve as early and sensitive mechanistic biomarker for clinical acetaminophen hepatotoxicity. DAMPS significantly contribute to liver injury and inhibiting the release of DAMPs ameliorates experimental hepatotoxicity. In addition, HMGB1 mediates 80% of gut bacterial translocation (BT) during acetaminophen toxicity. Gut BT triggers systemic inflammation, leading to multiple organ injury and mortality. Moreover, DAMPs can trigger and extend sterile inflammation, which contributes to early phase liver injury but improves liver regeneration at the late phase of acetaminophen overdose, because anti-inflammatory treatment reduces liver injury at early phase but impairs liver regeneration at late phase of acetaminophen toxicity, whereas pro-inflammatory therapy improves late phase liver regeneration. DAMPs are promising mechanistic biomarkers and could also be the potential therapeutic targets for drug hepatotoxicity. DAMPs-triggered sterile inflammation contributes to liver injury at early phase but improves liver regeneration at later phase of acetaminophen hepatotoxicity; therefore, anti-inflammatory therapy would be beneficial at early phase but should be avoided at the late phase of acetaminophen overdose.
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Affiliation(s)
- Runkuan Yang
- Department of Emergencies and Critical Care, Oslo University Hospital, Nydalen, PO Box 4950, 0424, Oslo, Norway. .,Department of Critical Care Medicine, University of Pittsburgh Medical School, 3550 Terrace Street, Pittsburgh, PA, 15261, USA.
| | - Tor Inge Tonnesseen
- Department of Emergencies and Critical Care, Oslo University Hospital, Nydalen, PO Box 4950, 0424, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Blindern, 0316, Oslo, Norway
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81
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Kong B, Sun R, Huang M, Chow MD, Zhong XB, Xie W, Lee YH, Guo GL. Fibroblast Growth Factor 15-Dependent and Bile Acid-Independent Promotion of Liver Regeneration in Mice. Hepatology 2018; 68:1961-1976. [PMID: 29672888 PMCID: PMC6195490 DOI: 10.1002/hep.30041] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 04/01/2018] [Accepted: 04/14/2018] [Indexed: 12/20/2022]
Abstract
The role of intestine-derived factors in promoting liver regeneration after partial hepatectomy (PHx) are not entirely known, but bile acids (BAs) and fibroblast growth factor 15 (Fgf15) that is highly expressed in the mouse ileum could promote hepatocyte proliferation. Fgf15 strongly suppresses the synthesis of BAs, and emerging evidence indicates that Fgf15 is important for liver regeneration. The mechanisms by which Fgf15 promotes liver regeneration are unclear, but Fgf15 may do so indirectly by reducing BA levels and/or directly by promoting cell proliferation. However, it remains undetermined whether these two mechanisms are independent or integrated. In this study, we aimed to clarify these relationships by generating Fgf15 Tet-Off, transgenic mice (Fgf15 Tg) that had very low BA levels as a result from overexpressed Fgf15-mediated suppression of BA synthesis. Compared with wild-type mice, the Fgf15 Tg mice showed increased hepatocyte proliferation even without surgery, and a further induction of the genes in cell-cycle progression after PHx. Moreover, overexpression of Fgf15 by adeno-associated virus (AAV)-Fgf15 transduction or treatment with the recombinant Fgf15 protein led to increased cell proliferation in vivo. Furthermore, Fgf15 Tg mice exhibited an earlier and greater activation of mitogen-activated protein kinase, signal transducer and activator of transcription 3, and NF-κB signaling pathways in the priming stage, and a disruption of the hippo signaling pathway in the termination stage of liver regeneration. Conclusion: Direct in vivo evidence demonstrates that Fgf15 is critical in stimulating the phases of priming and termination of liver regeneration that are critical for cell survival and liver-size determination, independent of BA levels. (Hepatology 2018; 00:000-000).
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Affiliation(s)
- Bo Kong
- School of Life Sciences, Guangzhou University, Guangzhou, China 510006,Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ 08854
| | - Runbin Sun
- Key Laboratory of drug metabolism and pharmacokinetics, China Pharmaceutical University, Nanjing, China, 210009
| | - Mingxing Huang
- Department of Infectious Diseases, the Fifth Affiliated Hospital of Sun Yat-Sen University (SYSU), Zhuhai, Guangdong, China 519000
| | - Monica D. Chow
- Department of General Surgery, Rutgers-Robert Wood Johnson Medical School, New Brunswick, NJ 08901
| | - Xiao-bo Zhong
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut, Storrs, CT 06269
| | - Wen Xie
- Center for Pharmacogenetics and Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania 15261
| | - Yi-Horng Lee
- Division of Pediatric Surgery, Department of Surgery, Rutgers-Robert Wood Johnson Medical School, New Brunswick, NJ 08901
| | - Grace L. Guo
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ 08854,Environmental and Occupational Health Sciences Institute (EOHSI), Rutgers, The State University of New Jersey, Piscataway, NJ 08854,Corresponding author: Grace L. Guo, 170 Frelinghuysen Road, Piscataway, NJ, 08807 (Address), (848)4458186 (phone), (732)4454161 (fax),
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82
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Lin X, Chen L, Li H, Liu Y, Guan Y, Li X, Jia Z, Lin X, Jia J, Sun Y, Xiao D. miR-155 accelerates proliferation of mouse hepatocytes during liver regeneration by directly targeting SOCS1. Am J Physiol Gastrointest Liver Physiol 2018; 315:G443-G453. [PMID: 29792529 DOI: 10.1152/ajpgi.00072.2018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Liver regeneration after two-thirds partial hepatectomy (PH) is a clinically significant repair process for restoring proper liver architecture. Although microRNA-155 (miR-155) has been found to serve as a crucial microRNA regulator that controls liver cell function and proliferation, little is known about its specific role in the regenerating liver. Using a mouse model with miR-155 overexpression or miR-155 knockout, we investigated the molecular mechanisms of miR-155 in liver regeneration. We found a marked induction of miR-155 in C57BL/6 mice after PH. Furthermore, RL-m155 mice showed enhanced liver regeneration as a result of accelerated progression of hepatocytes into the cell cycle, mainly through an increase in cyclin levels. However, proliferation of hepatocytes was delayed in miR-155-deficient livers. Expression of suppressor of cytokine signaling 1 (SOCS1) was dramatically downregulated in the process of liver regeneration, and enhancement of SOCS1 contributed to impaired proliferation of hepatocytes. Additionally, in vitro and in vivo experiments showed that adenovirus- or adeno-associated virus-mediated overexpression of SOCS1 attenuated improved liver regeneration induced by miR-155 overexpression. Our study shows that miR-155 is a pro-proliferative regulator in liver regeneration by facilitating the cell cycle and directly targeting SOCS1. NEW & NOTEWORTHY Our findings suggest a microRNA-155 (miR-155)-mediated positive regulation pattern in liver regeneration. A series of in vivo and in vitro studies showed that miR-155 upregulation enhanced partial hepatectomy-induced proliferation of hepatocytes by promoting the cell cycle without inducing DNA damage or apoptosis. Suppressor of cytokine signaling 1, a target gene of miR-155, antagonized the proliferation-promoting effect of miR-155. Therefore, pharmacological intervention targeting miR-155 may be therapeutically beneficial in various liver diseases.
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Affiliation(s)
- Xia Lin
- Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University , Guangzhou , China
| | - Li Chen
- Department of Endocrinology, The First Affiliated Hospital of Sun Yat-sen University , Guangzhou , China
| | - Haiyan Li
- Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University , Guangzhou , China
| | - Yu Liu
- Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University , Guangzhou , China
| | - Yanhong Guan
- Department of Endocrinology, The Second Affiliated Hospital, Guangzhou Medical University , Guangzhou , China
| | - Xiaoyan Li
- School of Laboratory Medicine and Biotechnology, Southern Medical University , Guangzhou , China
| | - Zhenchang Jia
- School of Laboratory Medicine and Biotechnology, Southern Medical University , Guangzhou , China
| | - Xiaolin Lin
- Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University , Guangzhou , China
| | - Junshuang Jia
- Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University , Guangzhou , China
| | - Yan Sun
- Zhongshan School of Medicine, Sun Yat-sen University , Guangzhou , China
| | - Dong Xiao
- Guangdong Provincial Key Laboratory of Cancer Immunotherapy Research and Guangzhou Key Laboratory of Tumor Immunology Research, Cancer Research Institute, Southern Medical University , Guangzhou , China.,Institute of Comparative Medicine & Laboratory Animal Center, Southern Medical University , Guangzhou , China
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83
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Wu J, Zhao Y, Park YK, Lee JY, Gao L, Zhao J, Wang L. Loss of PDK4 switches the hepatic NF-κB/TNF pathway from pro-survival to pro-apoptosis. Hepatology 2018; 68:1111-1124. [PMID: 29603325 PMCID: PMC6165716 DOI: 10.1002/hep.29902] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 03/10/2018] [Accepted: 03/23/2018] [Indexed: 12/11/2022]
Abstract
It has been established that nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) members promote survival by upregulating antiapoptotic genes and that genetic and pharmacological inhibition of NF-κB is required for tumor necrosis factor (TNF)-induced hepatocyte apoptosis. In this study, we demonstrate that this pro-survival pathway is switched to pro-apoptosis under pyruvate dehydrogenase kinase 4 (PDK4)-deficient conditions. PDK4-deficiency triggered hepatic apoptosis concomitantly with increased numbers of aberrant mitochondria, reactive oxygen species (ROS) production, sustained c-Jun N-terminal Kinase (JNK) activation, and reduction of glutathione (GSH). Interestingly, PDK4 retained p65 in cytoplasm via a direct protein-protein interaction. Disruption of PDK4-p65 association promoted p65 nuclear translocation. This, in turn, facilitated p65 binding to the TNF promoter to activate TNF-TNFR1 apoptotic pathway. Pdk4-/- livers were sensitized to Jo2 and D-(+)-Galactosamine /Lipopolysaccharide (GalN/LPS)-mediated apoptotic injury which was prevented by the inhibition of p65 or TNFR1. The pro-survival activity of TNF was shifted, which was switched to a pro-apoptotic activity in Pdk4-/- hepatocytes as a result of impaired activation of pro-survival NF-κB targets. Conclusion: PDK4 is indispensable to dictate the fate of TNF/NF-κB-mediated hepatocyte apoptosis. (Hepatology 2018).
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Affiliation(s)
- Jianguo Wu
- Department of Physiology and Neurobiology, Institute for Systems Genomics, University of Connecticut, Storrs, CT 06269,Corresponding author: Jianguo Wu (), 75 North Eagleville Rd., U3156, Storrs, CT 06269. Tel: 860-486-0857; Fax: 860-486-3303
| | - Yulan Zhao
- Department of Physiology and Neurobiology, Institute for Systems Genomics, University of Connecticut, Storrs, CT 06269
| | - Young-Ki Park
- Department of Nutritional Sciences, Institute for Systems Genomics, University of Connecticut, Storrs, CT 06269
| | - Ji-Young Lee
- Department of Nutritional Sciences, Institute for Systems Genomics, University of Connecticut, Storrs, CT 06269
| | - Ling Gao
- Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Jinan, Shandong, 250021, China,Shandong Clinical Medical Center of Endocrinology and Metabolism, Jinan, Shandong, 250021, China,Institute of Endocrinology and metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong, 250021, China
| | - Jiajun Zhao
- Department of Endocrinology, Shandong Provincial Hospital affiliated to Shandong University, Jinan, Shandong, 250021, China,Shandong Clinical Medical Center of Endocrinology and Metabolism, Jinan, Shandong, 250021, China,Institute of Endocrinology and metabolism, Shandong Academy of Clinical Medicine, Jinan, Shandong, 250021, China
| | - Li Wang
- Department of Physiology and Neurobiology, Institute for Systems Genomics, University of Connecticut, Storrs, CT 06269,Veterans Affairs Connecticut Healthcare System, West Haven, CT 06516,Department of Internal Medicine, Section of Digestive Diseases, Yale University, New Haven, CT 06520
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84
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Sheppard S, Ferry A, Guedes J, Guerra N. The Paradoxical Role of NKG2D in Cancer Immunity. Front Immunol 2018; 9:1808. [PMID: 30150983 PMCID: PMC6099450 DOI: 10.3389/fimmu.2018.01808] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 07/23/2018] [Indexed: 12/12/2022] Open
Abstract
The activating receptor NKG2D and its ligands are recognized as a potent immune axis that controls tumor growth and microbial infections. With regards to cancer surveillance, various studies have demonstrated the antitumor function mediated by NKG2D on natural killer cells and on conventional and unconventional T cells. The use of NKG2D-deficient mice established the importance of NKG2D in delaying tumor development in transgenic mouse models of cancer. However, we recently demonstrated an unexpected, flip side to this coin, the ability for NKG2D to contribute to tumor growth in a model of inflammation-driven liver cancer. With a focus on the liver, here, we review current knowledge of NKG2D-mediated tumor surveillance and discuss evidence supporting a dual role for NKG2D in cancer immunity. We postulate that in certain advanced cancers, expression of ligands for NKG2D can drive cancer progression rather than rejection. We propose that the nature of the microenvironment within and surrounding tumors impacts the outcome of NKG2D activation. In a form of autoimmune attack, NKG2D promotes tissue damage, mostly in the inflamed tissue adjacent to the tumor, facilitating tumor progression while being ineffective at rejecting transformed cells in the tumor bed.
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Affiliation(s)
- Sam Sheppard
- Department of Life Sciences, Imperial College London, London, United Kingdom.,Memorial Sloan Kettering Cancer Center, Zuckerman Research Center, New York, NY, United States
| | - Amir Ferry
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Joana Guedes
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Nadia Guerra
- Department of Life Sciences, Imperial College London, London, United Kingdom
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85
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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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86
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Chae MS, Kim Y, Lee N, Chung HS, Park CS, Lee J, Choi JH, Hong S. Graft Regeneration and Functional Recovery in Patients with Early Allograft Dysfunction After Living-Donor Liver Transplantation. Ann Transplant 2018; 23:481-490. [PMID: 30013021 PMCID: PMC6248034 DOI: 10.12659/aot.909112] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Background Successful graft regeneration is important in living-donor liver transplantation (LDLT) because partial liver grafts are used. Early allograft dysfunction (EAD) is an intermediate outcome that affects the long-term postoperative course in liver transplantation. The aim of the present study was to investigate liver graft regeneration under EAD development in LDLT. Material/Methods The data of 226 patients who underwent LDLT from September 2010 to July 2014 were retrospectively analyzed. The patients were classified into 2 groups: one with and one without EAD. Graft regeneration, functional recovery, and long-term patient survival were compared between the 2 groups. Results The grafts grew more vigorously in the EAD group than in the non-EAD group, as evidenced by the larger absolute (ALV) and relative liver volumes (RLV) of the former on postoperative days (POD) 7 and 21. The median (interquartile range) RLVs of the non-EAD group versus the EAD group were as follows: 55.2 (47.9–65.8) vs. 53.7 (46.6–64.5)% preoperatively, p>0.05; 76.1 (66.9–85.7) vs. 86.7 (73.9–96.8)% on POD 7, p<0.01; 79.6 (69.3–91.2) vs. 93.7 (79.6–101.6)%, p<0.01 on POD 21. In the early postoperative period, hepatic function, measured as total bilirubin and international normalized ratio, was higher in the EAD group; however, after EAD development, graft function recovered in these patients. In the follow-up period, overall patient survival was comparable between the 2 groups. Conclusions The liver grafts of EAD patients steadily regenerated, such that the development of EAD did not affect long-term patient survival after LDLT.
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Affiliation(s)
- Min Suk Chae
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Youngchan Kim
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Nuri Lee
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Hyun Sik Chung
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Chul Soo Park
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jaemin Lee
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jong Ho Choi
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Sanghyun Hong
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
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87
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Abstract
The liver has a unique ability of regenerating after injuries or partial loss of its mass. The mechanisms responsible for liver regeneration - mostly occurring when the hepatic tissue is damaged or functionally compromised by metabolic stress - have been studied in considerable detail over the last few decades, because this phenomenon has both basic-biology and clinical relevance. More specifically, recent interest has been focusing on the widespread occurrence of abnormal nutritional habits in the Western world that result in an increased prevalence of non-alcoholic fatty liver disease (NAFLD). NAFLD is closely associated with insulin resistance and dyslipidemia, and it represents a major clinical challenge. The disease may progress to steatohepatitis with persistent inflammation and progressive liver damage, both of which will compromise regeneration under conditions of partial hepatectomy in surgical oncology or in liver transplantation procedures. Here, we analyze the impact of ER stress and SIRT1 in lipid metabolism and in fatty liver pathology, and their consequences on liver regeneration. Moreover, we discuss the fine interplay between ER stress and SIRT1 functioning when contextualized to liver regeneration. An improved understanding of the cellular and molecular intricacies contributing to liver regeneration could be of great clinical relevance in areas as diverse as obesity, metabolic syndrome and type 2 diabetes, as well as oncology and transplantation.
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Affiliation(s)
| | - Giuseppe Servillo
- Department of Experimental Medicine, University of Perugia, Perugia, Italy
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88
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Pibiri M, Leoni VP, Atzori L. Heme oxygenase-1 inhibitor tin-protoporphyrin improves liver regeneration after partial hepatectomy. Life Sci 2018; 204:9-14. [PMID: 29738777 DOI: 10.1016/j.lfs.2018.05.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 04/24/2018] [Accepted: 05/04/2018] [Indexed: 12/22/2022]
Abstract
AIMS This study investigates the effects of the heme oxygenase-1 (HO-1) inhibitor tin protoporphyrin IX (SnPP), on rat liver regeneration following 2/3 partial hepatectomy (PH) in order to clarify the controversial role of HO-1 in the regulation of cellular growth. MAIN METHODS Male Wistar rats received a subcutaneous injection of either SnPP (10 μmoles/kg body weight) or saline 12 h before PH and 0, 12 and 24 h after surgery. Rats were killed from 0.5 to 36 h after PH. Bromodeoxyuridine (BrdU) incorporation was used to analyze cell proliferation. Immunohistochemistry, Western blot analysis and quantitative Real Time-PCR were used to assess molecular and cellular changes after PH. KEY FINDINGS Data obtained have shown that administration of SnPP caused an increased entry of hepatocytes into S phase after PH, as demonstrated by labeling (L.I.) and mitotic (M.I.) indexes. Furthermore, enhanced cell cycle entry in PH-animals pre-treated with SnPP was associated with an earlier activation of IL-6 and transcription factors involved in liver regeneration, such as phospho-JNK and phospho-STAT3. SIGNIFICANCE Summarizing, data here reported demonstrate that inhibition of HO-1 enhances rat liver regeneration after PH which is associated to a very rapid increase in the levels of inflammatory mediators such as IL-6, phopsho-JNK and phospho-STAT3, suggesting that HO-1 could act as a negative modulator of liver regeneration. Knowledge about the mechanisms of liver regeneration can be applied to clinical problems caused by delayed liver growth, and HO-1 repression may be a mechanism by which cells can faster proliferate in response to tissue damage.
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Affiliation(s)
- Monica Pibiri
- Department of Biomedical Sciences, Oncology and Molecular Pathology Unit, University of Cagliari, Via Porcell 4, 09124 Cagliari, Italy
| | - Vera Piera Leoni
- Department of Biomedical Sciences, Oncology and Molecular Pathology Unit, University of Cagliari, Via Porcell 4, 09124 Cagliari, Italy
| | - Luigi Atzori
- Department of Biomedical Sciences, Oncology and Molecular Pathology Unit, University of Cagliari, Via Porcell 4, 09124 Cagliari, Italy.
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Zhang H, Shi JH, Jiang H, Wang K, Lu JY, Jiang X, Ma X, Chen YX, Ren AJ, Zheng J, Xie Z, Guo S, Xu X, Zhang WJ. ZBTB20 regulates EGFR expression and hepatocyte proliferation in mouse liver regeneration. Cell Death Dis 2018; 9:462. [PMID: 29700307 PMCID: PMC5920068 DOI: 10.1038/s41419-018-0514-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 03/21/2018] [Accepted: 03/22/2018] [Indexed: 12/14/2022]
Abstract
Liver has a unique regenerative capacity, however, its regulatory mechanism is not fully defined. We have established the zinc-finger protein ZBTB20 as a key transcriptional repressor for alpha-fetoprotein (AFP) gene in liver. As a marker of hepatic differentiation, AFP expression is closely associated with hepatocyte proliferation. Unexpectedly, here we showed that ZBTB20 acts as a positive regulator of hepatic replication and is required for efficient liver regeneration. The mice specifically lacking ZBTB20 in hepatocytes exhibited a remarkable defect in liver regeneration after partial hepatectomy, which was characterized by impaired hepatocyte proliferation along with delayed cyclin D1 induction and diminished AKT activation. Furthermore, we found that epithelial growth factor receptor (EGFR) expression was dramatically reduced in the liver in the absence of ZBTB20, thereby substantially attenuating the activation of EGFR signaling pathway in regenerating liver. Adenovirus-mediated EGFR overexpression in ZBTB20-deficient hepatocytes could largely restore AKT activation in response to EGFR ligands in vitro, as well as hepatocyte replication in liver regeneration. Furthermore, ZBTB20 overexpression could significantly restore hepatic EGFR expression and cell proliferation after hepatectomy in ZBTB20-deficient liver. Taken together, our data point to ZBTB20 as a critical regulator of EGFR expression and hepatocyte proliferation in mouse liver regeneration, and may serve as a potential therapeutic target in clinical settings of liver regeneration.
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Affiliation(s)
- Hai Zhang
- Department of Pathophysiology, Second Military Medical University, Shanghai, 200433, China
| | - Jian-Hui Shi
- Department of Pathophysiology, Second Military Medical University, Shanghai, 200433, China
| | - Hui Jiang
- Department of Pathophysiology, Second Military Medical University, Shanghai, 200433, China
| | - Kejia Wang
- Department of Pathophysiology, Second Military Medical University, Shanghai, 200433, China
| | - Jun-Yu Lu
- Department of Pathophysiology, Second Military Medical University, Shanghai, 200433, China
| | - Xuchao Jiang
- Department of Pathophysiology, Second Military Medical University, Shanghai, 200433, China
| | - Xianhua Ma
- Department of Pathophysiology, Second Military Medical University, Shanghai, 200433, China
| | - Yu-Xia Chen
- Department of Pathophysiology, Second Military Medical University, Shanghai, 200433, China
| | - An-Jing Ren
- Department of Pathophysiology, Second Military Medical University, Shanghai, 200433, China
| | - Jianming Zheng
- Department of Pathology, Changhai Hospital, Shanghai, 200433, China
| | - Zhifang Xie
- Department of Pathophysiology, Second Military Medical University, Shanghai, 200433, China
| | - Shaodong Guo
- Department of Nutrition and Metabolism, Texas University of Agriculture and Mechanics, College Station, TX, 77843, USA
| | - Xiongfei Xu
- Department of Pathophysiology, Second Military Medical University, Shanghai, 200433, China.
| | - Weiping J Zhang
- Department of Pathophysiology, Second Military Medical University, Shanghai, 200433, China.
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杨 博, 罗 庆, 康 权, 肖 程, 王 健, 李 志, 龚 梦, 毕 杨. [Tumor necrosis factor-α and transforming growth factor-β 1 balance liver stem cell differentiation in cholestatic cirrhosis]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2018; 38:375-383. [PMID: 29735435 PMCID: PMC6765666 DOI: 10.3969/j.issn.1673-4254.2018.04.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To investigate the changes of tumor necrosis factor-α (TNF-α) and transforming growth factor-β1 (TGF-β1) in mice with cholestatic cirrhosis and their role in regulating the balance of liver stem cell differentiation. METHODS Balb/c mice were subjected to bile duct ligation (BDL), and serum biochemical parameters were measured and hepatic histopathology was observed using HE staining to evaluate the modeling of cholestatic cirrhosis. Immunohistochemistry and Western blotting were used to detect the changes of TNF-α and TGF-β1 in the mice after modeling. Mouse embryonic hepatic stem cells (HP14-19) were treated with different concentrations of TNF-α and TGF-β1, and the cell differentiation was assessed using Western blotting, real-time PCR, and PAS staining. RESULTS The mice receiving BDL showed significantly increased blood biochemical parameters (P<0.05), and HE staining revealed obviously increased collagen fibers in the liver with significantly increased expressions of TNF-α and TGF-β1 (P<0.05). In HP14-19 cells, induction with TNF-α and TGF-β1 for 3 days did not cause significant changes in cell differentiation, but induction for 5 days resulted in significantly increases intensity of PAS staining in the cells. The cells induced with 20, 40, and 80 ng/mL TNF-α for 5 days exhibited a significantly stronger expression of cytokeratin 18 than cytokeratin 19 (P<0.05), while induction with 20, 40, and 80 ng/mL TGF-β1 produced opposite changes in cytokeratin 18 and cytokeratin 19 expressions. Further induction of the cells with TNF-α and TGF-β1 for 10 days, did not alter the expression patterns of cytokeratin 18 and cytokeratin 19 observed on day 5, but their protein expression levels and PAS staining intensity of the cells were enhanced and their mRNA expressions became lowered. CONCLUSION Common bile duct ligation can induce conditions simulating cholestatic cirrhosis in mice. TNF-α and TGF-β1 are elevated in cholestatic cirrhosis and play opposite roles in regulating the differentiation balance of liver stem cells: the former promotes the differentiation of liver stem cells into hepatocytes, while the latter promotes the cell differentiation into colangiocytes.
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Affiliation(s)
- 博 杨
- 重庆医科大学附属儿童医院 肝胆外科,重庆 400014Department of Hepatology, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
- 重庆医科大学附属儿童医院 儿科研究所干细胞实验室//儿童发育疾病研究所教育部重点实验室//儿童发育重大疾病国家国际科技合作基地//儿科学重庆市重点实验室,重庆 400014Laboratory of Stem Cell Biology and Therapy, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - 庆 罗
- 重庆医科大学附属儿童医院 儿科研究所干细胞实验室//儿童发育疾病研究所教育部重点实验室//儿童发育重大疾病国家国际科技合作基地//儿科学重庆市重点实验室,重庆 400014Laboratory of Stem Cell Biology and Therapy, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - 权 康
- 重庆医科大学附属儿童医院 肝胆外科,重庆 400014Department of Hepatology, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
- 重庆医科大学附属儿童医院 儿科研究所干细胞实验室//儿童发育疾病研究所教育部重点实验室//儿童发育重大疾病国家国际科技合作基地//儿科学重庆市重点实验室,重庆 400014Laboratory of Stem Cell Biology and Therapy, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - 程 肖
- 重庆医科大学附属儿童医院 儿科研究所干细胞实验室//儿童发育疾病研究所教育部重点实验室//儿童发育重大疾病国家国际科技合作基地//儿科学重庆市重点实验室,重庆 400014Laboratory of Stem Cell Biology and Therapy, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - 健 王
- 重庆医科大学附属儿童医院 肝胆外科,重庆 400014Department of Hepatology, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
- 重庆医科大学附属儿童医院 儿科研究所干细胞实验室//儿童发育疾病研究所教育部重点实验室//儿童发育重大疾病国家国际科技合作基地//儿科学重庆市重点实验室,重庆 400014Laboratory of Stem Cell Biology and Therapy, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - 志鹏 李
- 重庆医科大学附属儿童医院 肝胆外科,重庆 400014Department of Hepatology, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
- 重庆医科大学附属儿童医院 儿科研究所干细胞实验室//儿童发育疾病研究所教育部重点实验室//儿童发育重大疾病国家国际科技合作基地//儿科学重庆市重点实验室,重庆 400014Laboratory of Stem Cell Biology and Therapy, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - 梦嘉 龚
- 重庆医科大学附属儿童医院 儿科研究所干细胞实验室//儿童发育疾病研究所教育部重点实验室//儿童发育重大疾病国家国际科技合作基地//儿科学重庆市重点实验室,重庆 400014Laboratory of Stem Cell Biology and Therapy, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - 杨 毕
- 重庆医科大学附属儿童医院 儿科研究所干细胞实验室//儿童发育疾病研究所教育部重点实验室//儿童发育重大疾病国家国际科技合作基地//儿科学重庆市重点实验室,重庆 400014Laboratory of Stem Cell Biology and Therapy, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
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Chae MS, Moon KU, Chung HS, Park CS, Lee J, Choi JH, Hong SH. Serum interleukin-6 and tumor necrosis factor-α are associated with early graft regeneration after living donor liver transplantation. PLoS One 2018; 13:e0195262. [PMID: 29649247 PMCID: PMC5896938 DOI: 10.1371/journal.pone.0195262] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 03/19/2018] [Indexed: 02/07/2023] Open
Abstract
Background Liver graft regeneration is orchestrated by specific and sequential stimuli, including hepatocyte growth factors, cytokines, and catecholamines. We evaluated the association between preoperative serum cytokines and early liver graft regeneration in human living donor liver transplantation (LDLT). Patients and methods We retrospectively reviewed the data of adult patients who underwent LDLT from January 2010 to December 2014. Serum cytokines, including interleukin (IL)-2, 6, 10, 12, 17, interferon (IFN)-γ and tumor necrosis factor (TNF)-α were measured in the recipients 1 day before surgery and on postoperative day (POD) 7. Liver graft volume was estimated using abdominal computed tomography images of the donors and recipients. Results In total, 226 patients were analyzed in this study. Median preoperative levels of serum cytokines were as follows: IL-2, 0.1 (0.1–1.6) pg/mL; IL-6, 7.3 (0.1–30.2) pg/mL; IL-10, 0.5 (0.1–11.0) pg/mL; IL-12, 0.1 (0.1–0.1) pg/mL; IL-17, 2.0 (0.1–16.4) pg/mL; IFN-γ, 3.2 (0.1–16.0) pg/mL; and TNF-α, 9.8 (5.4–17.9) pg/mL. Higher preoperative serum levels of IL-6, IL-10, and TNF-α, dichotomized at the median, were associated with increased relative liver volumes by POD 7. Multivariate analysis revealed that higher levels of serum IL-6 and TNF-α were independently associated with increased graft volume during the first 1 week after LDLT, based on the lower levels of those cytokines. Conclusions IL-6 and TNF-α were important mediators of the success of early graft regeneration in patients who underwent LDLT.
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Affiliation(s)
- Min Suk Chae
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Kwang Uck Moon
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyun Sik Chung
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Chul Soo Park
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jaemin Lee
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jong Ho Choi
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sang Hyun Hong
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- * E-mail:
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Drosophila as a Model System to Study Cell Signaling in Organ Regeneration. BIOMED RESEARCH INTERNATIONAL 2018; 2018:7359267. [PMID: 29750169 PMCID: PMC5884440 DOI: 10.1155/2018/7359267] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 02/06/2018] [Indexed: 12/22/2022]
Abstract
Regeneration is a fascinating phenomenon that allows organisms to replace or repair damaged organs or tissues. This ability occurs to varying extents among metazoans. The rebuilding of the damaged structure depends on regenerative proliferation that must be accompanied by proper cell fate respecification and patterning. These cellular processes are regulated by the action of different signaling pathways that are activated in response to the damage. The imaginal discs of Drosophila melanogaster have the ability to regenerate and have been extensively used as a model system to study regeneration. Drosophila provides an opportunity to use powerful genetic tools to address fundamental problems about the genetic mechanisms involved in organ regeneration. Different studies in Drosophila have helped to elucidate the genes and signaling pathways that initiate regeneration, promote regenerative growth, and induce cell fate respecification. Here we review the signaling networks involved in regulating the variety of cellular responses that are required for discs regeneration.
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93
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Anderson C, Thabrew MI, Hughes RD. Assay to Detect Inhibitory Substances in Serum of Patients with Acute Liver Failure. Int J Artif Organs 2018. [DOI: 10.1177/039139889902200209] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Patients with acute liver failure accumulate toxic substances in the circulation which may impair recovery of hepatic function. The aim of this study was to test an in vitro assay to detect inhibitory substances in the serum of patients with acute liver failure. Human liver-derived HepG2 cells were incubated for 24h in 96 well plates (30,000 cells/well) with sera (10%) from 24 patients with acute liver failure due to paracetamol overdose or NANB hepatitis and 11 normal controls. DNA synthesis was determined from the incorporation of 3H-thymidine and cell viability by the metabolism of the tetrazolium dye MTS. HepG2 cells exposed to acute liver failure sera incorporated significantly less 3H-thymidine (median 30% of control, range 0.2–169%) than normal sera (100%, 76–133%, p=0.002). Cell viability was also reduced (75%, 33–112% vs 100%, 96–105%, p<0.00l). There was no correlation between these values and patient outcome or levels of plasma TNF-α or serum interferon-γ. The assay detected inhibitory substances in sera of patients with acute liver failure and could be used to monitor the use of liver support systems.
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Affiliation(s)
- C. Anderson
- Institute of Liver Studies Guy's, King's and St Thomas’ School of Medicine and Dentistry, London - UK
| | - M. I. Thabrew
- Institute of Liver Studies Guy's, King's and St Thomas’ School of Medicine and Dentistry, London - UK
| | - R. D. Hughes
- Institute of Liver Studies Guy's, King's and St Thomas’ School of Medicine and Dentistry, London - UK
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Li X, Sun J, Fan X, Guan L, Li D, Zhou Y, Zeng X, Chen Y, Zhang H, Xu L, Jiang F, Huang M, Bi H. Schisandrol B promotes liver regeneration after partial hepatectomy in mice. Eur J Pharmacol 2018; 818:96-102. [DOI: 10.1016/j.ejphar.2017.10.044] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 10/20/2017] [Accepted: 10/20/2017] [Indexed: 01/20/2023]
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96
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Lv M, Zeng H, He Y, Zhang J, Tan G. Dexmedetomidine promotes liver regeneration in mice after 70% partial hepatectomy by suppressing NLRP3 inflammasome not TLR4/NFκB. Int Immunopharmacol 2018; 54:46-51. [DOI: 10.1016/j.intimp.2017.10.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 09/30/2017] [Accepted: 10/25/2017] [Indexed: 02/08/2023]
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97
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Kim D, Cho GS, Han C, Park DH, Park HK, Woo DH, Kim JH. Current Understanding of Stem Cell and Secretome Therapies in Liver Diseases. Tissue Eng Regen Med 2017; 14:653-665. [PMID: 30603518 PMCID: PMC6171672 DOI: 10.1007/s13770-017-0093-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 10/23/2017] [Accepted: 10/29/2017] [Indexed: 12/14/2022] Open
Abstract
Liver failure is one of the main risks of death worldwide, and it originates from repetitive injuries and inflammations of liver tissues, which finally leads to the liver cirrhosis or cancer. Currently, liver transplantation is the only effective treatment for the liver diseases although it has a limitation due to donor scarcity. Alternatively, cell therapy to regenerate and reconstruct the damaged liver has been suggested to overcome the current limitation of liver disease cures. Several transplantable cell types could be utilized for recovering liver functions in injured liver, including bone marrow cells, mesenchymal stem cells, hematopoietic stem cells, macrophages, and stem cell-derived hepatocytes. Furthermore, paracrine effects of transplanted cells have been suggested as a new paradigm for liver disease cures, and this application would be a new strategy to cure liver failures. Therefore, here we reviewed the current status and challenges of therapy using stem cells for liver disease treatments.
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Affiliation(s)
- Dongkyu Kim
- Laboratory of Stem Cells, NEXEL Co., Ltd., 9th Floor, 21 Wangsan-ro, Dongdaemun-gu, Seoul, 02580 Korea
| | - Gun-Sik Cho
- Laboratory of Stem Cells, NEXEL Co., Ltd., 9th Floor, 21 Wangsan-ro, Dongdaemun-gu, Seoul, 02580 Korea
| | - Choongseong Han
- Laboratory of Stem Cells, NEXEL Co., Ltd., 9th Floor, 21 Wangsan-ro, Dongdaemun-gu, Seoul, 02580 Korea
- Department of Oral Medicine and Oral Diagnosis, School of Dentistry and Dental Research Institute, Seoul National University, #101 Daehak-ro, Jongro-gu, Seoul, 03080 Korea
| | - Dong-Hyuk Park
- Department of Neurosurgery, Korea University Medical Center, Anam Hospital, Korea University College of Medicine, 73 Inchonro, Sungbuk-gu, Seoul, 02841 Korea
| | - Hee-Kyung Park
- Department of Oral Medicine and Oral Diagnosis, School of Dentistry and Dental Research Institute, Seoul National University, #101 Daehak-ro, Jongro-gu, Seoul, 03080 Korea
| | - Dong-Hun Woo
- Laboratory of Stem Cells, NEXEL Co., Ltd., 9th Floor, 21 Wangsan-ro, Dongdaemun-gu, Seoul, 02580 Korea
| | - Jong-Hoon Kim
- Laboratory of Stem Cells and Tissue Regeneration, Department of Biotechnology, College of Life Sciences and Biotechnology, Science Campus, Korea University, 145 Anam-ro, Seongbu-gu, Seoul, 02841 Korea
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98
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Wu T, Huang J, Wu S, Huang Z, Chen X, Liu Y, Cui D, Song G, Luo Q, Liu F, Ouyang G. Deficiency of periostin impairs liver regeneration in mice after partial hepatectomy. Matrix Biol 2017; 66:81-92. [PMID: 28965986 DOI: 10.1016/j.matbio.2017.09.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 09/20/2017] [Accepted: 09/20/2017] [Indexed: 12/17/2022]
Abstract
Periostin (Postn) is a crucial extracellular remodeling factor that has been implicated in the pathogenesis of hepatic inflammation, fibrosis, non-alcoholic fatty liver disease and liver cancer. However, the role of Postn in liver regeneration remains unclear. Here, we demonstrate that Postn mRNA and protein levels are significantly upregulated in the mice after 2/3 partial hepatectomy (PHx). Compared with wild-type mice, Postn-deficient mice exhibit lower liver/body weight ratio and less Ki67-positive cells at days 2, 8 and 14 after PHx. Macrophage infiltration and the levels of TNF-α, IL-6 and HGF in the livers of Postn-deficient mice are significantly decreased compared with wild-type mice one day after PHx. In addition, overexpression of Postn leads to higher liver/body weight ratio and more Ki67-positive cells in the livers of mice and promotes hepatocyte proliferation in vitro. Moreover, liver sinusoidal endothelial cells, biliary epithelial cells and hepatocytes can express Postn after PHx, and Postn deficiency impairs angiogenesis during liver regeneration. Our findings indicate that Postn deficiency impairs liver regeneration in mice after PHx and Postn might be a novel promoter for liver regeneration.
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Affiliation(s)
- Tiantian Wu
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen 361102, China
| | - Jingwen Huang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen 361102, China
| | - Shasha Wu
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen 361102, China
| | - Zhengjie Huang
- Department of Surgical Oncology, First Affiliated Hospital of Xiamen University, Xiamen 361003, China
| | - Xiaoyan Chen
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen 361102, China
| | - Yingfu Liu
- Medical College, Xiamen University, Xiamen 361102, China
| | - Dan Cui
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen 361102, China
| | - Gang Song
- Medical College, Xiamen University, Xiamen 361102, China
| | - Qi Luo
- Department of Surgical Oncology, First Affiliated Hospital of Xiamen University, Xiamen 361003, China
| | - Fan Liu
- Medical College, Xiamen University, Xiamen 361102, China.
| | - Gaoliang Ouyang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Xiamen 361102, China.
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Ogiso H, Ito H, Kanbe A, Ando T, Hara A, Shimizu M, Moriwaki H, Seishima M. The Inhibition of Indoleamine 2,3-Dioxygenase Accelerates Early Liver Regeneration in Mice After Partial Hepatectomy. Dig Dis Sci 2017. [PMID: 28639129 DOI: 10.1007/s10620-017-4651-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND AND AIM The inflammatory response accelerates early liver regeneration after liver injury and resection. Recent studies have demonstrated that indoleamine 2,3-dioxygenase-1 (IDO1) suppresses the activation of inflammatory cells and induces immune tolerance. In this study, we examined the role of IDO1 in liver regeneration after partial hepatectomy (PHx). METHODS WT or IDO1-knockout (IDO1-KO) mice received 70% PHx. The liver-body weight ratio after PHx was measured and hepatocyte growth was assessed by immunostaining. The expression of cell cycle genes and pro-inflammatory cytokines in the liver was analyzed by quantitative RT-PCR. In addition, 1-methyl-DL-tryptophan (1-MT), which is an IDO1 inhibitory agent, was given to WT mice and the liver-body weight ratio was measured after PHx. RESULTS The liver-body weight ratio was significantly increased in IDO1-KO mice compared with that in WT mice after PHx. More Ki-67-positive cells were present in IDO1-KO mice than in WT mice after PHx. The expression of cell cycle genes (cyclin D1, cyclin E) and pro-inflammatory cytokines (IL-1β, TNF-α and IL-6) was up-regulated in the remnant liver of IDO1-KO mice compared with WT mice. Moreover, treatment with 1-MT promoted liver regeneration. CONCLUSION IDO1 deficiency promoted early liver regeneration after PHx, indicating that IDO1 suppresses the production of inflammatory cytokines and subsequently inhibits hepatocyte proliferation during liver regeneration.
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Affiliation(s)
- Hideyuki Ogiso
- Department of Informative Clinical Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Hiroyasu Ito
- Department of Informative Clinical Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan.
| | - Ayumu Kanbe
- Department of Informative Clinical Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Tatsuya Ando
- Department of Informative Clinical Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Akira Hara
- Department of Tumor Pathology, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Masahito Shimizu
- First Department of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Hisataka Moriwaki
- First Department of Internal Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Mitsuru Seishima
- Department of Informative Clinical Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
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Robertson FP, Fuller BJ, Davidson BR. An Evaluation of Ischaemic Preconditioning as a Method of Reducing Ischaemia Reperfusion Injury in Liver Surgery and Transplantation. J Clin Med 2017; 6:jcm6070069. [PMID: 28708111 PMCID: PMC5532577 DOI: 10.3390/jcm6070069] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 06/22/2017] [Accepted: 07/04/2017] [Indexed: 12/16/2022] Open
Abstract
Liver Ischaemia Reperfusion (IR) injury is a major cause of post-operative liver dysfunction, morbidity and mortality following liver resection surgery and transplantation. There are no proven therapies for IR injury in clinical practice and new approaches are required. Ischaemic Preconditioning (IPC) can be applied in both a direct and remote fashion and has been shown to ameliorate IR injury in small animal models. Its translation into clinical practice has been difficult, primarily by a lack of knowledge regarding the dominant protective mechanisms that it employs. A review of all current studies would suggest that IPC/RIPC relies on creating a small tissue injury resulting in the release of adenosine and l-arginine which act through the Adenosine receptors and the haem-oxygenase and endothelial nitric oxide synthase systems to reduce hepatocyte necrosis and improve the hepatic microcirculation post reperfusion. The next key step is to determine how long the stimulus requires to precondition humans to allow sufficient injury to occur to release the potential mediators. This would open the door to a new therapeutic chapter in this field.
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Affiliation(s)
- Francis P Robertson
- Division of Surgery and Interventional Science, Royal Free Campus, University College London, 9th Floor, Royal Free Hospital, Pond Street, London NW3 2QG, UK.
| | - Barry J Fuller
- Division of Surgery and Interventional Science, Royal Free Campus, University College London, 9th Floor, Royal Free Hospital, Pond Street, London NW3 2QG, UK.
| | - Brian R Davidson
- Division of Surgery and Interventional Science, Royal Free Campus, University College London, 9th Floor, Royal Free Hospital, Pond Street, London NW3 2QG, UK.
- Department of Hepaticopancreatobiliary Surgery and Liver Transplantation, Royal Free Foundation Trust, 9th Floor, Royal Free Hospital, Pond Street, London NW3 2QG, UK.
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