1
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Li P, Ma X, Huang D, Gu X. Exploring the roles of non-coding RNAs in liver regeneration. Noncoding RNA Res 2024; 9:945-953. [PMID: 38680418 PMCID: PMC11046251 DOI: 10.1016/j.ncrna.2024.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/26/2024] [Accepted: 04/16/2024] [Indexed: 05/01/2024] Open
Abstract
Liver regeneration (LR) is a complex process encompassing three distinct phases: priming, proliferation phase and restoration, all influenced by various regulatory factors. After liver damage or partial resection, the liver tissue demonstrates remarkable restorative capacity, driven by cellular proliferation and repair mechanisms. The essential roles of non-coding RNAs (ncRNAs), predominantly microRNAs (miRNAs), long non-coding RNAs (lncRNAs) and circular RNA (circRNA), in regulating LR have been vastly studied. Additionally, the impact of ncRNAs on LR and their abnormal expression profiles during this process have been extensively documented. Mechanistic investigations have revealed that ncRNAs interact with genes involved in proliferation to regulate hepatocyte proliferation, apoptosis and differentiation, along with liver progenitor cell proliferation and migration. Given the significant role of ncRNAs in LR, an in-depth exploration of their involvement in the liver's self-repair capacity can reveal promising therapeutic strategies for LR and liver-related diseases. Moreover, understanding the unique regenerative potential of the adult liver and the mechanisms and regulatory factors of ncRNAs in LR are crucial for improving current treatment strategies and exploring new therapeutic approaches for various liver-related diseases. This review provides a brief overview of the LR process and the ncRNA expression profiles during this process. Furthermore, we also elaborate on the specific molecular mechanisms through which multiple key ncRNAs regulate the LR process. Finally, based on the expression characteristics of ncRNAs and their interactions with proliferation-associated genes, we explore their potential clinical application, such as developing predictive indicators reflecting liver regenerative activity and manipulating LR processes for therapeutic purposes.
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Affiliation(s)
- Penghui Li
- Department of Oncology, The First Affiliated Hospital, College of Clinical Medicine, Henan University of Science and Technology, Luoyang, 471000, Henan, China
| | - Xiao Ma
- Zhejiang University School of Medicine, Hangzhou, 310000, Zhejiang, China
| | - Di Huang
- Department of Child Health Care, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, 450000, Henan, China
| | - Xinyu Gu
- Department of Oncology, The First Affiliated Hospital, College of Clinical Medicine, Henan University of Science and Technology, Luoyang, 471000, Henan, China
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2
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Lin YH, Zeng Q, Jia Y, Wang Z, Li L, Hsieh MH, Cheng Q, Pagani CA, Livingston N, Lee J, Zhang Y, Sharma T, Siegwart DJ, Yimlamai D, Levi B, Zhu H. In vivo screening identifies SPP2, a secreted factor that negatively regulates liver regeneration. Hepatology 2023; 78:1133-1148. [PMID: 37039560 PMCID: PMC10524179 DOI: 10.1097/hep.0000000000000402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 03/14/2023] [Indexed: 04/12/2023]
Abstract
BACKGROUND AND AIMS The liver is remarkably regenerative and can completely recover even when 80% of its mass is surgically removed. Identification of secreted factors that regulate liver growth would help us understand how organ size and regeneration are controlled but also provide candidate targets to promote regeneration or impair cancer growth. APPROACH AND RESULTS To enrich for secreted factors that regulate growth control, we induced massive liver overgrowth with either YAP or MYC . Differentially expressed secreted factors were identified in these livers using transcriptomic analysis. To rank candidates by functionality, we performed in vivo CRISPR screening using the Fah knockout model of tyrosinemia. We identified secreted phosphoprotein-2 (SPP2) as a secreted factor that negatively regulates regeneration. Spp2 -deficient mice showed increased survival after acetaminophen poisoning and reduced fibrosis after repeated carbon tetrachloride injections. We examined the impact of SPP2 on bone morphogenetic protein signaling in liver cells and found that SPP2 antagonized bone morphogenetic protein signaling in vitro and in vivo. We also identified cell-surface receptors that interact with SPP2 using a proximity biotinylation assay coupled with mass spectrometry. We showed that SPP2's interactions with integrin family members are in part responsible for some of the regeneration phenotypes. CONCLUSIONS Using an in vivo CRISPR screening system, we identified SPP2 as a secreted factor that negatively regulates liver regeneration. This study provides ways to identify, validate, and characterize secreted factors in vivo.
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Affiliation(s)
- Yu-Hsuan Lin
- Children’s Research Institute, Departments of Pediatrics and Internal Medicine, Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Qiyu Zeng
- Children’s Research Institute, Departments of Pediatrics and Internal Medicine, Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Yuemeng Jia
- Children’s Research Institute, Departments of Pediatrics and Internal Medicine, Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Zixi Wang
- Children’s Research Institute, Departments of Pediatrics and Internal Medicine, Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Lin Li
- Children’s Research Institute, Departments of Pediatrics and Internal Medicine, Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Meng-Hsiung Hsieh
- Children’s Research Institute, Departments of Pediatrics and Internal Medicine, Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Qiang Cheng
- Department of Biochemistry, Department of Biomedical Engineering, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Chase A. Pagani
- Department of Surgery, Center for Organogenesis and Trauma, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Nicholas Livingston
- Department of Surgery, Center for Organogenesis and Trauma, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jeon Lee
- Lyda Hill Department of Bioinformatics, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Yu Zhang
- Children’s Research Institute, Departments of Pediatrics and Internal Medicine, Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Tripti Sharma
- Children’s Research Institute, Departments of Pediatrics and Internal Medicine, Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Daniel J. Siegwart
- Department of Biochemistry, Department of Biomedical Engineering, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Dean Yimlamai
- Section of Pediatric Gastroenterology and Hepatology, Department of Pediatrics, Yale University School of Medicine, New Haven, CT 06519
| | - Benjamin Levi
- Department of Surgery, Center for Organogenesis and Trauma, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Hao Zhu
- Children’s Research Institute, Departments of Pediatrics and Internal Medicine, Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
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3
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Jeong H, Lee C, Lee MJ, Jung Y. Therapeutic strategies to improve liver regeneration after hepatectomy. Exp Biol Med (Maywood) 2023; 248:1313-1318. [PMID: 37786387 PMCID: PMC10625346 DOI: 10.1177/15353702231191195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023] Open
Abstract
Chronic liver disease is one of the most common diseases worldwide, and its prevalence is particularly high among adults aged 40-60 years; it takes a toll on productivity and causes significant economic burden. However, there are still no effective treatments that can fundamentally treat chronic liver disease. Although liver transplantation is considered the only effective treatment for chronic liver disease, it has limitations in that the pool of available donors is vastly insufficient for the number of potential recipients. Even if a patient undergoes liver transplantation, side effects such as immune rejection or bile duct complications could occur. In addition, impaired liver regeneration due to various causes, such as aging and metabolic disorders, may cause liver failure after liver resection, even leading to death. Therefore, further research on the liver regeneration process and therapeutic strategies to improve liver regeneration are needed. In this review, we describe the process of liver regeneration after hepatectomy, focusing on various cytokines and signaling pathways. In addition, we review treatment strategies that have been studied to date to improve liver regeneration, such as promotion of hepatocyte proliferation and metabolism and transplantation of mesenchymal stem cells. This review helps to understand the physiological processes involved in liver regeneration and provides basic knowledge for developing treatments for successful liver regeneration.
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Affiliation(s)
- Hayeong Jeong
- Department of Integrated Biological Science, College of Natural Science, Pusan National University, Pusan 46241, Korea
| | - Chanbin Lee
- Institute of Systems Biology, College of Natural Science, Pusan National University, Pusan 46241, Korea
| | - Min Jae Lee
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Kangwon National University, Chuncheon 24341, Korea
| | - Youngmi Jung
- Department of Integrated Biological Science, College of Natural Science, Pusan National University, Pusan 46241, Korea
- Department of Biological Sciences, College of Natural Science, Pusan National University, Pusan 46241, Korea
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4
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Bravo M, Simón J, González-Recio I, Martinez-Cruz LA, Goikoetxea-Usandizaga N, Martínez-Chantar ML. Magnesium and Liver Metabolism Through the Lifespan. Adv Nutr 2023; 14:739-751. [PMID: 37207838 PMCID: PMC10334155 DOI: 10.1016/j.advnut.2023.05.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 04/24/2023] [Accepted: 05/11/2023] [Indexed: 05/21/2023] Open
Abstract
Within the organism, the liver is the main organ responsible for metabolic homeostasis and xenobiotic transformation. To maintain an adequate liver weight-to-bodyweight ratio, this organ has an extraordinary regenerative capacity and is able to respond to an acute insult or partial hepatectomy. Maintenance of hepatic homeostasis is crucial for the proper functioning of the liver, and in this context, adequate nutrition with macro- and micronutrient intake is mandatory. Among all known macro-minerals, magnesium has a key role in energy metabolism and in metabolic and signaling pathways that maintain liver function and physiology throughout its life span. In the present review, the cation is reported as a potential key molecule during embryogenesis, liver regeneration, and aging. The exact role of the cation during liver formation and regeneration is not fully understood due to its unclear role in the activation and inhibition of those processes, and further research in a developmental context is needed. As individuals age, they may develop hypomagnesemia, a condition that aggravates the characteristic alterations. Additionally, risk of developing liver pathologies increases with age, and hypomagnesemia may be a contributing factor. Therefore, magnesium loss must be prevented by adequate intake of magnesium-rich foods such as seeds, nuts, spinach, or rice to prevent age-related hepatic alterations and contribute to the maintenance of hepatic homeostasis. Since magnesium-rich sources include a variety of foods, a varied and balanced diet can meet both macronutrient and micronutrient needs.
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Affiliation(s)
- Miren Bravo
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio (Bizkaia), Spain
| | - Jorge Simón
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio (Bizkaia), Spain; Center for Biomedical Research in Liver and Digestive Diseases Network (CIBERehd), Bizkaia, Spain
| | - Irene González-Recio
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio (Bizkaia), Spain
| | - Luis Alfonso Martinez-Cruz
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio (Bizkaia), Spain
| | - Naroa Goikoetxea-Usandizaga
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio (Bizkaia), Spain; Center for Biomedical Research in Liver and Digestive Diseases Network (CIBERehd), Bizkaia, Spain.
| | - María Luz Martínez-Chantar
- Liver Disease Laboratory, Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Derio (Bizkaia), Spain; Center for Biomedical Research in Liver and Digestive Diseases Network (CIBERehd), Bizkaia, Spain.
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5
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Hu S, Cao C, Poddar M, Delgado E, Singh S, Singh-Varma A, Stolz DB, Bell A, Monga SP. Hepatocyte β-catenin loss is compensated by Insulin-mTORC1 activation to promote liver regeneration. Hepatology 2023; 77:1593-1611. [PMID: 35862186 PMCID: PMC9859954 DOI: 10.1002/hep.32680] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/13/2022] [Accepted: 07/16/2022] [Indexed: 01/25/2023]
Abstract
BACKGROUND AND AIMS Liver regeneration (LR) following partial hepatectomy (PH) occurs via activation of various signaling pathways. Disruption of a single pathway can be compensated by activation of another pathway to continue LR. The Wnt-β-catenin pathway is activated early during LR and conditional hepatocyte loss of β-catenin delays LR. Here, we study mechanism of LR in the absence of hepatocyte-β-catenin. APPROACH AND RESULTS Eight-week-old hepatocyte-specific Ctnnb1 knockout mice (β-catenin ΔHC ) were subjected to PH. These animals exhibited decreased hepatocyte proliferation at 40-120 h and decreased cumulative 14-day BrdU labeling of <40%, but all mice survived, suggesting compensation. Insulin-mediated mechanistic target of rapamycin (mTOR) complex 1 (mTORC1) activation was uniquely identified in the β-catenin ΔHC mice at 72-96 h after PH. Deletion of hepatocyte regulatory-associated protein of mTOR (Raptor), a critical mTORC1 partner, in the β-catenin ΔHC mice led to progressive hepatic injury and mortality by 30 dys. PH on early stage nonmorbid Raptor ΔHC -β-catenin ΔHC mice led to lethality by 12 h. Raptor ΔHC mice showed progressive hepatic injury and spontaneous LR with β-catenin activation but died by 40 days. PH on early stage nonmorbid Raptor ΔHC mice was lethal by 48 h. Temporal inhibition of insulin receptor and mTORC1 in β-catenin ΔHC or controls after PH was achieved by administration of linsitinib at 48 h or rapamycin at 60 h post-PH and completely prevented LR leading to lethality by 12-14 days. CONCLUSIONS Insulin-mTORC1 activation compensates for β-catenin loss to enable LR after PH. mTORC1 signaling in hepatocytes itself is critical to both homeostasis and LR and is only partially compensated by β-catenin activation. Dual inhibition of β-catenin and mTOR may have notable untoward hepatotoxic side effects.
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Affiliation(s)
- Shikai Hu
- School of Medicine, Tsinghua University, Beijing, China
- Division of Experimental Pathology, Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
| | - Catherine Cao
- Division of Experimental Pathology, Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
| | - Minakshi Poddar
- Division of Experimental Pathology, Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
| | - Evan Delgado
- Division of Experimental Pathology, Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
- Pittsburgh Liver Research Center, University of Pittsburgh Medical Center and University of Pittsburgh School of Medicine, Pittsburgh, PA USA
| | - Sucha Singh
- Division of Experimental Pathology, Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
| | - Anya Singh-Varma
- Division of Experimental Pathology, Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
| | - Donna Beer Stolz
- Center for Biologic Imaging, University of Pittsburgh, Pittsburgh, PA USA
| | - Aaron Bell
- Division of Experimental Pathology, Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
- Pittsburgh Liver Research Center, University of Pittsburgh Medical Center and University of Pittsburgh School of Medicine, Pittsburgh, PA USA
| | - Satdarshan P. Monga
- Division of Experimental Pathology, Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
- Pittsburgh Liver Research Center, University of Pittsburgh Medical Center and University of Pittsburgh School of Medicine, Pittsburgh, PA USA
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA USA
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6
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IL6 supports long-term expansion of hepatocytes in vitro. Nat Commun 2022; 13:7345. [PMID: 36446858 PMCID: PMC9708838 DOI: 10.1038/s41467-022-35167-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 11/21/2022] [Indexed: 11/30/2022] Open
Abstract
Hepatocytes are very difficult to expand in vitro. A few studies have demonstrated that chemical cocktails with growth factors or Wnt ligands can support long-term expansion of hepatocytes via dedifferentiation. However, the culture conditions are complex, and clonal expansion of hepatic progenitors with full differentiation capacity are rarely reported. Here, we discover IL6, combined with EGF and HGF, promotes long-term expansion (>30 passages in ~150 days with theoretical expansion of ~1035 times) of primary mouse hepatocytes in vitro in simple 2D culture, by converting hepatocytes into induced hepatic progenitor cells (iHPCs), which maintain the capacity of differentiation into hepatocytes. IL6 also supports the establishment of single hepatocyte-derived iHPC clones. The summation of the downstream STAT3, ERK and AKT pathways induces a number of transcription factors which support rapid growth. This physiological and simple way may provide ideas for culturing previously difficult-to-culture cell types and support their future applications.
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7
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Sparrelid E, Olthof PB, Dasari BVM, Erdmann JI, Santol J, Starlinger P, Gilg S. Current evidence on posthepatectomy liver failure: comprehensive review. BJS Open 2022; 6:6840812. [PMID: 36415029 PMCID: PMC9681670 DOI: 10.1093/bjsopen/zrac142] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/21/2022] [Accepted: 10/03/2022] [Indexed: 11/24/2022] Open
Abstract
INTRODUCTION Despite important advances in many areas of hepatobiliary surgical practice during the past decades, posthepatectomy liver failure (PHLF) still represents an important clinical challenge for the hepatobiliary surgeon. The aim of this review is to present the current body of evidence regarding different aspects of PHLF. METHODS A literature review was conducted to identify relevant articles for each topic of PHLF covered in this review. The literature search was performed using Medical Subject Heading terms on PubMed for articles on PHLF in English until May 2022. RESULTS Uniform reporting on PHLF is lacking due to the use of various definitions in the literature. There is no consensus on optimal preoperative assessment before major hepatectomy to avoid PHLF, although many try to estimate future liver remnant function. Once PHLF occurs, there is still no effective treatment, except liver transplantation, where the reported experience is limited. DISCUSSION Strict adherence to one definition is advised when reporting data on PHLF. The use of the International Study Group of Liver Surgery criteria of PHLF is recommended. There is still no widespread established method for future liver remnant function assessment. Liver transplantation is currently the only effective way to treat severe, intractable PHLF, but for many indications, this treatment is not available in most countries.
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Affiliation(s)
- Ernesto Sparrelid
- Department of Clinical Science, Intervention and Technology, Division of Surgery, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Pim B Olthof
- Department of Surgery, Erasmus MC, Rotterdam, The Netherlands.,Department of Surgery, Amsterdam UMC, Amsterdam, The Netherlands
| | - Bobby V M Dasari
- Department of HPB Surgery and Liver Transplantation, Queen Elizabeth Hospital, Birmingham, UK.,University of Birmingham, Birmingham, UK
| | - Joris I Erdmann
- Department of Surgery, Amsterdam UMC, Amsterdam, The Netherlands
| | - Jonas Santol
- Department of Surgery, HPB Center, Viennese Health Network, Clinic Favoriten and Sigmund Freud Private University, Vienna, Austria.,Department of Vascular Biology and Thrombosis Research, Centre of Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Patrick Starlinger
- Division of General Surgery, Department of Surgery, Medical University of Vienna, General Hospital of Vienna, Vienna, Austria.,Department of Surgery, Division of Hepatobiliary and Pancreas Surgery, Mayo Clinic, Rochester, New York, USA
| | - Stefan Gilg
- Department of Clinical Science, Intervention and Technology, Division of Surgery, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
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8
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Shu W, Yang M, Yang J, Lin S, Wei X, Xu X. Cellular crosstalk during liver regeneration: unity in diversity. Cell Commun Signal 2022; 20:117. [PMID: 35941604 PMCID: PMC9358812 DOI: 10.1186/s12964-022-00918-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 06/08/2022] [Indexed: 11/27/2022] Open
Abstract
The liver is unique in its ability to regenerate from a wide range of injuries and diseases. Liver regeneration centers around hepatocyte proliferation and requires the coordinated actions of nonparenchymal cells, including biliary epithelial cells, liver sinusoidal endothelial cells, hepatic stellate cells and kupffer cells. Interactions among various hepatocyte and nonparenchymal cells populations constitute a sophisticated regulatory network that restores liver mass and function. In addition, there are two different ways of liver regeneration, self-replication of liver epithelial cells and transdifferentiation between liver epithelial cells. The interactions among cell populations and regenerative microenvironment in the two modes are distinct. Herein, we first review recent advances in the interactions between hepatocytes and surrounding cells and among nonparenchymal cells in the context of liver epithelial cell self-replication. Next, we discuss the crosstalk of several cell types in the context of liver epithelial transdifferentiation, which is also crucial for liver regeneration. Video abstract
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Affiliation(s)
- Wenzhi Shu
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China.,Institute of Organ Transplantation, Zhejiang University, Hangzhou, 310003, China.,NHC Key Laboratory of Combined Multi-Organ Transplantation, Hangzhou, 310003, China.,Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, 310024, China.,Program in Clinical Medicine, Zhejiang University School of Medicine, Hangzhou, People's Republic of China
| | - Mengfan Yang
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China.,Institute of Organ Transplantation, Zhejiang University, Hangzhou, 310003, China.,NHC Key Laboratory of Combined Multi-Organ Transplantation, Hangzhou, 310003, China.,Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, 310024, China
| | - Jiayin Yang
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Shengda Lin
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China.,Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Xuyong Wei
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China. .,Institute of Organ Transplantation, Zhejiang University, Hangzhou, 310003, China. .,NHC Key Laboratory of Combined Multi-Organ Transplantation, Hangzhou, 310003, China. .,Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, 310024, China.
| | - Xiao Xu
- Key Laboratory of Integrated Oncology and Intelligent Medicine of Zhejiang Province, Department of Hepatobiliary and Pancreatic Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, China. .,Institute of Organ Transplantation, Zhejiang University, Hangzhou, 310003, China. .,NHC Key Laboratory of Combined Multi-Organ Transplantation, Hangzhou, 310003, China. .,Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, 310024, China.
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9
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Liang R, Lin YH, Zhu H. Genetic and Cellular Contributions to Liver Regeneration. Cold Spring Harb Perspect Biol 2021; 14:a040832. [PMID: 34750173 PMCID: PMC9438780 DOI: 10.1101/cshperspect.a040832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The regenerative capabilities of the liver represent a paradigm for understanding tissue repair in solid organs. Regeneration after partial hepatectomy in rodent models is well understood, while regeneration in the context of clinically relevant chronic injuries is less studied. Given the growing incidence of fatty liver disease, cirrhosis, and liver cancer, interest in liver regeneration is increasing. Here, we will review the principles, genetics, and cell biology underlying liver regeneration, as well as new approaches being used to study heterogeneity in liver tissue maintenance and repair.
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Affiliation(s)
- Roger Liang
- Children's Research Institute, Departments of Pediatrics and Internal Medicine, Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Yu-Hsuan Lin
- Children's Research Institute, Departments of Pediatrics and Internal Medicine, Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
| | - Hao Zhu
- Children's Research Institute, Departments of Pediatrics and Internal Medicine, Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA
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10
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Campana L, Esser H, Huch M, Forbes S. Liver regeneration and inflammation: from fundamental science to clinical applications. Nat Rev Mol Cell Biol 2021; 22:608-624. [PMID: 34079104 DOI: 10.1038/s41580-021-00373-7] [Citation(s) in RCA: 97] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2021] [Indexed: 02/05/2023]
Abstract
Liver regeneration is a complex process involving the crosstalk of multiple cell types, including hepatocytes, hepatic stellate cells, endothelial cells and inflammatory cells. The healthy liver is mitotically quiescent, but following toxic damage or resection the cells can rapidly enter the cell cycle to restore liver mass and function. During this process of regeneration, epithelial and non-parenchymal cells respond in a tightly coordinated fashion. Recent studies have described the interaction between inflammatory cells and a number of other cell types in the liver. In particular, macrophages can support biliary regeneration, contribute to fibrosis remodelling by repressing hepatic stellate cell activation and improve liver regeneration by scavenging dead or dying cells in situ. In this Review, we describe the mechanisms of tissue repair following damage, highlighting the close relationship between inflammation and liver regeneration, and discuss how recent findings can help design novel therapeutic approaches.
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Affiliation(s)
- Lara Campana
- Centre for Regenerative Medicine, Institute of Regeneration and Repair, The University of Edinburgh, Edinburgh, UK
| | - Hannah Esser
- Centre for Regenerative Medicine, Institute of Regeneration and Repair, The University of Edinburgh, Edinburgh, UK
| | - Meritxell Huch
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - Stuart Forbes
- Centre for Regenerative Medicine, Institute of Regeneration and Repair, The University of Edinburgh, Edinburgh, UK.
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11
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Dong J, Viswanathan S, Adami E, Schafer S, Kuthubudeen FF, Widjaja AA, Cook SA. The pro-regenerative effects of hyperIL6 in drug-induced liver injury are unexpectedly due to competitive inhibition of IL11 signaling. eLife 2021; 10:68843. [PMID: 34435951 PMCID: PMC8445623 DOI: 10.7554/elife.68843] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Accepted: 08/24/2021] [Indexed: 01/20/2023] Open
Abstract
It is generally accepted that IL6-mediated STAT3 signaling in hepatocytes, mediated via glycoprotein 130 (gp130; IL6ST), is beneficial and that the synthetic IL6:IL6ST fusion protein (HyperIL6) promotes liver regeneration. Recently, autocrine IL11 activity that also acts via IL6ST but uses ERK rather than STAT3 to signal, was found to be hepatotoxic. Here we examined whether the beneficial effects of HyperIL6 could reflect unappreciated competitive inhibition of IL11-dependent IL6ST signaling. In human and mouse hepatocytes, HyperIL6 reduced N-acetyl-p-aminophenol (APAP)-induced cell death independent of STAT3 activation and instead, dose-dependently, inhibited IL11-related signaling and toxicities. In mice, expression of HyperIl6 reduced ERK activation and promoted STAT3-independent hepatic regeneration (PCNA, Cyclin D1, Ki67) following administration of either IL11 or APAP. Inhibition of putative intrinsic IL6 trans-signaling had no effect on liver regeneration in mice. Following APAP, mice deleted for Il11 exhibited spontaneous liver repair but HyperIl6, despite robustly activating STAT3, had no effect on liver regeneration in this strain. These data show that synthetic IL6ST binding proteins such as HyperIL6 can have unexpected, on-target effects and suggest IL11, not IL6, as important for liver regeneration.
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Affiliation(s)
- Jinrui Dong
- Cardiovascular and Metabolic Disorders Program, Duke-National University ofSingapore Medical School, Singapore, Singapore
| | - Sivakumar Viswanathan
- Cardiovascular and Metabolic Disorders Program, Duke-National University ofSingapore Medical School, Singapore, Singapore
| | - Eleonora Adami
- Cardiovascular and Metabolic Disorders Program, Duke-National University ofSingapore Medical School, Singapore, Singapore
| | - Sebastian Schafer
- Cardiovascular and Metabolic Disorders Program, Duke-National University ofSingapore Medical School, Singapore, Singapore
| | - Fathima F Kuthubudeen
- Cardiovascular and Metabolic Disorders Program, Duke-National University ofSingapore Medical School, Singapore, Singapore
| | - Anissa A Widjaja
- Cardiovascular and Metabolic Disorders Program, Duke-National University ofSingapore Medical School, Singapore, Singapore
| | - Stuart A Cook
- Cardiovascular and Metabolic Disorders Program, Duke-National University ofSingapore Medical School, Singapore, Singapore.,National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore, Singapore.,MRC-London Institute of Medical Sciences, Hammersmith Hospital Campus, London, United Kingdom
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12
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De Rudder M, Dili A, Stärkel P, Leclercq IA. Critical Role of LSEC in Post-Hepatectomy Liver Regeneration and Failure. Int J Mol Sci 2021; 22:8053. [PMID: 34360818 PMCID: PMC8347197 DOI: 10.3390/ijms22158053] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/20/2021] [Accepted: 07/24/2021] [Indexed: 02/07/2023] Open
Abstract
Liver sinusoids are lined by liver sinusoidal endothelial cells (LSEC), which represent approximately 15 to 20% of the liver cells, but only 3% of the total liver volume. LSEC have unique functions, such as fluid filtration, blood vessel tone modulation, blood clotting, inflammatory cell recruitment, and metabolite and hormone trafficking. Different subtypes of liver endothelial cells are also known to control liver zonation and hepatocyte function. Here, we have reviewed the origin of LSEC, the different subtypes identified in the liver, as well as their renewal during homeostasis. The liver has the exceptional ability to regenerate from small remnants. The past decades have seen increasing awareness in the role of non-parenchymal cells in liver regeneration despite not being the most represented population. While a lot of knowledge has emerged, clarification is needed regarding the role of LSEC in sensing shear stress and on their participation in the inductive phase of regeneration by priming the hepatocytes and delivering mitogenic factors. It is also unclear if bone marrow-derived LSEC participate in the proliferative phase of liver regeneration. Similarly, data are scarce as to LSEC having a role in the termination phase of the regeneration process. Here, we review what is known about the interaction between LSEC and other liver cells during the different phases of liver regeneration. We next explain extended hepatectomy and small liver transplantation, which lead to "small for size syndrome" (SFSS), a lethal liver failure. SFSS is linked to endothelial denudation, necrosis, and lobular disturbance. Using the knowledge learned from partial hepatectomy studies on LSEC, we expose several techniques that are, or could be, used to avoid the "small for size syndrome" after extended hepatectomy or small liver transplantation.
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Affiliation(s)
- Maxime De Rudder
- Laboratory of Hepato-Gastroenterology, Institute of Experimental and Clinical Research, UCLouvain, 1200 Brussels, Belgium; (M.D.R.); (A.D.); (P.S.)
| | - Alexandra Dili
- Laboratory of Hepato-Gastroenterology, Institute of Experimental and Clinical Research, UCLouvain, 1200 Brussels, Belgium; (M.D.R.); (A.D.); (P.S.)
- HPB Surgery Unit, Centre Hospitalier Universitaire UCL Namur, Site Mont-Godinne, 5530 Yvoir, Belgium
| | - Peter Stärkel
- Laboratory of Hepato-Gastroenterology, Institute of Experimental and Clinical Research, UCLouvain, 1200 Brussels, Belgium; (M.D.R.); (A.D.); (P.S.)
- Department of Hepato-Gastroenterology, Cliniques Universitaires Saint-Luc, 1200 Brussels, Belgium
| | - Isabelle A. Leclercq
- Laboratory of Hepato-Gastroenterology, Institute of Experimental and Clinical Research, UCLouvain, 1200 Brussels, Belgium; (M.D.R.); (A.D.); (P.S.)
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13
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Han M, Liu X, Zhang W, Wang M, Bu W, Chang C, Yu M, Li Y, Tian C, Yang X, Zhu Y, He F. TSMiner: a novel framework for generating time-specific gene regulatory networks from time-series expression profiles. Nucleic Acids Res 2021; 49:e108. [PMID: 34313778 PMCID: PMC8502000 DOI: 10.1093/nar/gkab629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 06/30/2021] [Accepted: 07/09/2021] [Indexed: 12/03/2022] Open
Abstract
Time-series gene expression profiles are the primary source of information on complicated biological processes; however, capturing dynamic regulatory events from such data is challenging. Herein, we present a novel analytic tool, time-series miner (TSMiner), that can construct time-specific regulatory networks from time-series expression profiles using two groups of genes: (i) genes encoding transcription factors (TFs) that are activated or repressed at a specific time and (ii) genes associated with biological pathways showing significant mutual interactions with these TFs. Compared with existing methods, TSMiner demonstrated superior sensitivity and accuracy. Additionally, the application of TSMiner to a time-course RNA-seq dataset associated with mouse liver regeneration (LR) identified 389 transcriptional activators and 49 transcriptional repressors that were either activated or repressed across the LR process. TSMiner also predicted 109 and 47 Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways significantly interacting with the transcriptional activators and repressors, respectively. These findings revealed the temporal dynamics of multiple critical LR-related biological processes, including cell proliferation, metabolism and the immune response. The series of evaluations and experiments demonstrated that TSMiner provides highly reliable predictions and increases the understanding of rapidly accumulating time-series omics data.
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Affiliation(s)
- Mingfei Han
- State Key Laboratory of Proteomics, Beijing Institute of Lifeomics, National Center for Protein Sciences (Beijing), Beijing 102206, P.R. China
| | - Xian Liu
- State Key Laboratory of Proteomics, Beijing Institute of Lifeomics, National Center for Protein Sciences (Beijing), Beijing 102206, P.R. China
| | - Wen Zhang
- State Key Laboratory of Proteomics, Beijing Institute of Lifeomics, National Center for Protein Sciences (Beijing), Beijing 102206, P.R. China.,Tianjin Key Laboratory of Food Science and Biotechnology, School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China
| | - Mengnan Wang
- State Key Laboratory of Proteomics, Beijing Institute of Lifeomics, National Center for Protein Sciences (Beijing), Beijing 102206, P.R. China
| | - Wenjing Bu
- State Key Laboratory of Proteomics, Beijing Institute of Lifeomics, National Center for Protein Sciences (Beijing), Beijing 102206, P.R. China
| | - Cheng Chang
- State Key Laboratory of Proteomics, Beijing Institute of Lifeomics, National Center for Protein Sciences (Beijing), Beijing 102206, P.R. China
| | - Miao Yu
- State Key Laboratory of Proteomics, Beijing Institute of Lifeomics, National Center for Protein Sciences (Beijing), Beijing 102206, P.R. China
| | - Yingxing Li
- Central Research Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Chunyan Tian
- State Key Laboratory of Proteomics, Beijing Institute of Lifeomics, National Center for Protein Sciences (Beijing), Beijing 102206, P.R. China
| | - Xiaoming Yang
- State Key Laboratory of Proteomics, Beijing Institute of Lifeomics, National Center for Protein Sciences (Beijing), Beijing 102206, P.R. China
| | - Yunping Zhu
- State Key Laboratory of Proteomics, Beijing Institute of Lifeomics, National Center for Protein Sciences (Beijing), Beijing 102206, P.R. China
| | - Fuchu He
- State Key Laboratory of Proteomics, Beijing Institute of Lifeomics, National Center for Protein Sciences (Beijing), Beijing 102206, P.R. China
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14
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Oliveira RP, Machado IF, Palmeira CM, Rolo AP. The potential role of sestrin 2 in liver regeneration. Free Radic Biol Med 2021; 163:255-267. [PMID: 33359262 DOI: 10.1016/j.freeradbiomed.2020.12.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 11/25/2020] [Accepted: 12/17/2020] [Indexed: 12/27/2022]
Abstract
Liver regeneration is a remarkably complex phenomenon conserved across all vertebrates, enabling the restoration of lost liver mass in a matter of days. Unfortunately, extensive damage to the liver may compromise this process, often leading to the death of affected individuals. Ischemia/reperfusion injury (IRI) is a common source of damage preceding regeneration, often present during liver transplantation, resection, trauma, or hemorrhagic shock. Increased oxidative stress and mitochondrial dysfunction are key hallmarks of IRI, which can jeopardize the liver's ability to regenerate. Therefore, a better understanding of both liver regeneration and IRI is of important clinical significance. In the current review, we discuss the potential role of sestrin 2 (SESN2), a novel anti-aging protein, in liver regeneration and ischemia/reperfusion preceding regeneration. We highlight its beneficial role in protecting cells from mitochondrial dysfunction and oxidative stress as key aspects of its involvement in liver regeneration. Additionally, we describe how its ability to promote the expression of Nrf2 bears significant importance in this context. Finally, we focus on a potential novel link between SESN2, mitohormesis and ischemic preconditioning, which could explain some of the protective effects of preconditioning.
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Affiliation(s)
- Raúl P Oliveira
- Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, Coimbra, Portugal
| | - Ivo F Machado
- Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, Coimbra, Portugal; CNC - Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Carlos M Palmeira
- Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, Coimbra, Portugal; CNC - Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - Anabela P Rolo
- Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, Coimbra, Portugal; CNC - Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.
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15
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Zhao E, Shen Y, Amir M, Farris AB, Czaja MJ. Stathmin 1 Induces Murine Hepatocyte Proliferation and Increased Liver Mass. Hepatol Commun 2020; 4:38-49. [PMID: 31909354 PMCID: PMC6939544 DOI: 10.1002/hep4.1447] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 10/20/2019] [Indexed: 12/15/2022] Open
Abstract
The endogenous cellular signals that initiate the transition of hepatocytes from quiescence to proliferation remain unclear. The protein stathmin 1 (STMN1) is highly expressed in dividing cells, including hepatocytes, and functions to promote cell mitosis through physical interactions with tubulin and microtubules that regulate mitotic spindle formation. The recent finding that STMN1 mediates the resistance of cultured hepatocytes to oxidant stress led to an examination of the expression and function of this protein in the liver in vivo. STMN1 messenger RNA (mRNA) and protein were essentially undetectable in normal mouse liver but increased markedly in response to oxidant injury from carbon tetrachloride. Similarly, levels of STMN1 mRNA and protein were increased in human livers from patients with acute fulminant hepatic failure. To determine STMN1 function in the liver in vivo, mice were infected with a control or Stmn1-expressing adenovirus. Stmn1 expression induced spontaneous liver enlargement with a doubling of the liver to body weight ratio. The increase in liver mass resulted, in part, from hepatocellular hypertrophy but mainly from an induction of hepatocyte proliferation. STMN1 expression led to marked increases in the numbers of 5-bromo-2'-deoxyuridine-positive and mitotic hepatocytes and hepatic nuclear levels of cyclins and cyclin-dependent kinases. STMN1-induced hepatocyte proliferation was followed by an apoptotic response and a return of the liver to its normal mass. Conclusion: STMN1 promotes entry of quiescent hepatocytes into the cell cycle. STMN1 expression by itself in the absence of any reduction in liver mass is sufficient to stimulate a hepatic proliferative response that significantly increases liver mass.
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Affiliation(s)
- Enpeng Zhao
- Department of Genetics and Genomic SciencesIcahn School of Medicine at Mount SinaiNew YorkNY
| | - Yang Shen
- Division of Digestive DiseasesDepartment of MedicineEmory University School of MedicineAtlantaGA
| | - Muhammad Amir
- Division of Digestive DiseasesDepartment of MedicineEmory University School of MedicineAtlantaGA
| | - Alton B. Farris
- Department of Pathology and Laboratory MedicineEmory University School of MedicineAtlantaGA
| | - Mark J. Czaja
- Division of Digestive DiseasesDepartment of MedicineEmory University School of MedicineAtlantaGA
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16
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Fazel Modares N, Polz R, Haghighi F, Lamertz L, Behnke K, Zhuang Y, Kordes C, Häussinger D, Sorg UR, Pfeffer K, Floss DM, Moll JM, Piekorz RP, Ahmadian MR, Lang PA, Scheller J. IL-6 Trans-signaling Controls Liver Regeneration After Partial Hepatectomy. Hepatology 2019; 70:2075-2091. [PMID: 31100194 DOI: 10.1002/hep.30774] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 05/05/2019] [Indexed: 12/17/2022]
Abstract
Interleukin-6 (IL-6) is critically involved in liver regeneration after partial hepatectomy (PHX). Previous reports suggest that IL-6 trans-signaling through the soluble IL-6/IL-6R complex is involved in this process. However, the long-term contribution of IL-6 trans-signaling for liver regeneration after PHX is unknown. PHX-induced generation of the soluble IL-6R by ADAM (a disintegrin and metallo) proteases enables IL-6 trans-signaling, in which IL-6 forms an agonistic complex with the soluble IL-6 receptor (sIL-6R) to activate all cells expressing the signal-transducing receptor chain glycoprotein 130 (gp130). In contrast, without activation of ADAM proteases, IL-6 in complex with membrane-bound IL-6R and gp130 activates classic signaling. Here, we describe the generation of IL-6 trans-signaling mice, which exhibit boosted IL-6 trans-signaling and abrogated classic signaling by genetic conversion of all membrane-bound IL-6R into sIL-6R proteins phenocopying hyperactivation of ADAM-mediated shedding of IL-6R as single substrate. Importantly, although IL-6R deficient mice were strongly affected by PHX, survival and regeneration of IL-6 trans-signaling mice was indistinguishable from control mice, demonstrating that IL-6 trans-signaling fully compensates for disabled classic signaling in liver regeneration after PHX. Moreover, we monitored the long-term consequences of global IL-6 signaling inhibition versus IL-6 trans-signaling selective blockade after PHX by IL-6 monoclonal antibodies and soluble glycoprotein 130 as fragment crystallizable fusion, respectively. Both global IL-6 blockade and selective inhibition of IL-6 trans-signaling results in a strong decrease of overall survival after PHX, accompanied by decreased signal transducer and activator of transcription 3 phosphorylation and proliferation of hepatocytes. Mechanistically, IL-6 trans-signaling induces hepatocyte growth factor production by hepatic stellate cells. Conclusion: IL-6 trans-signaling, but not classic signaling, controls liver regeneration following PHX.
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Affiliation(s)
- Nastaran Fazel Modares
- Institute of Biochemistry and Molecular Biology II, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Robin Polz
- Institute of Biochemistry and Molecular Biology II, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Fereshteh Haghighi
- Institute of Biochemistry and Molecular Biology II, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Larissa Lamertz
- Institute of Biochemistry and Molecular Biology II, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Kristina Behnke
- Institute of Molecular Medicine II, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Yuan Zhuang
- Institute of Molecular Medicine II, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Claus Kordes
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Dieter Häussinger
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Ursula R Sorg
- Institute of Medical Microbiology and Hospital Hygiene, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Klaus Pfeffer
- Institute of Medical Microbiology and Hospital Hygiene, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Doreen M Floss
- Institute of Biochemistry and Molecular Biology II, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Jens M Moll
- Institute of Biochemistry and Molecular Biology II, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Roland P Piekorz
- Institute of Biochemistry and Molecular Biology II, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - M Reza Ahmadian
- Institute of Biochemistry and Molecular Biology II, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Philipp A Lang
- Institute of Molecular Medicine II, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Jürgen Scheller
- Institute of Biochemistry and Molecular Biology II, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
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17
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Jagtap U, Sivadas A, Basu S, Verma A, Sivasubbu S, Scaria V, Sachidanandan C. A Temporal Map of Gene Expression Pattern During Zebrafish Liver Regeneration. Zebrafish 2019; 17:1-10. [PMID: 31770088 DOI: 10.1089/zeb.2019.1790] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Zebrafish is increasingly being used to study liver injury and regeneration. However, very little is known about molecular players that respond to injury and those important for liver regeneration. We use a metronidazole nitroreductase (MTZ-nfsb)-based system to selectively ablate hepatocytes in adult zebrafish to create a model for liver injury and regeneration. In this study, we generate a comprehensive temporal map of gene expression changes during regeneration through RNA sequencing of liver samples at various stages of injury and regeneration. Analyzing these data, we find that soon after injury the immediate early transcription factor MYC induces a battery of genes that respond to the MTZ-induced ROS by activating oxido-reductase pathways and apoptosis machinery. Immediately after injury, liver cells downregulate many functional genes, including complement protein synthesis, bile acid, and lipid biosynthesis, in a concerted manner. At 6 days postinjury, we find a dramatic induction of cholesterol biosynthesis and protein folding machinery, with expression levels returning to predamage levels by 8 days, suggesting an important role for these pathways in liver regeneration. This chronological transcriptomic map of liver regeneration in zebrafish would serve as a framework for further studies in understanding, and for screening for compounds that augment liver regeneration.
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Affiliation(s)
- Urmila Jagtap
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Ambily Sivadas
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Sandeep Basu
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Ankit Verma
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Sridhar Sivasubbu
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Vinod Scaria
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Chetana Sachidanandan
- CSIR-Institute of Genomics and Integrative Biology, New Delhi, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
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18
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Huang X, Lee F, Teng Y, Lingam CB, Chen Z, Sun M, Song Z, Balachander GM, Leo HL, Guo Q, Shah I, Yu H. Sequential drug delivery for liver diseases. Adv Drug Deliv Rev 2019; 149-150:72-84. [PMID: 31734169 DOI: 10.1016/j.addr.2019.11.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 11/03/2019] [Accepted: 11/04/2019] [Indexed: 12/12/2022]
Abstract
The liver performs critical physiological functions such as metabolism/detoxification and blood homeostasis/biliary excretion. A high degree of blood access means that a drug's resident time in any cell is relatively short. This short drug exposure to cells requires local sequential delivery of multiple drugs for optimal efficacy, potency, and safety. The high metabolism and excretion of drugs also impose both technical challenges and opportunities to sequential drug delivery. This review provides an overview of the sequential events in liver regeneration and the related liver diseases. Using selected examples of liver cancer, hepatitis B viral infection, fatty liver diseases, and drug-induced liver injury, we highlight efforts made for the sequential delivery of small and macromolecular drugs through different biomaterials, cells, and microdevice-based delivery platforms that allow fast delivery kinetics and rapid drug switching. As this is a nascent area of development, we extrapolate and compare the results with other sequential drug delivery studies to suggest possible application in liver diseases, wherever appropriate.
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Affiliation(s)
- Xiaozhong Huang
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, MD9-04-11, 2 Medical Drive, Singapore 117593, Singapore; Institute of Bioengineering and Nanotechnology, A*STAR, The Nanos, #06-01, 31 Biopolis Way, Singapore 138669, Singapore
| | - Fan Lee
- Institute of Bioengineering and Nanotechnology, A*STAR, The Nanos, #06-01, 31 Biopolis Way, Singapore 138669, Singapore
| | - Yao Teng
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, MD9-04-11, 2 Medical Drive, Singapore 117593, Singapore; Institute of Bioengineering and Nanotechnology, A*STAR, The Nanos, #06-01, 31 Biopolis Way, Singapore 138669, Singapore
| | - Corey Bryen Lingam
- Department of Biomedical Engineering, National University of Singapore, Engineering Drive 3, Engineering Block 4, #04-08, Singapore 117583, Singapore
| | - Zijian Chen
- Department of Biomedical Engineering, National University of Singapore, Engineering Drive 3, Engineering Block 4, #04-08, Singapore 117583, Singapore; Department of Biomedical Engineering, Southern University of Science and Technology, 1088 Xueyuan Avenue, Shenzhen 518055, China
| | - Min Sun
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, MD9-04-11, 2 Medical Drive, Singapore 117593, Singapore
| | - Ziwei Song
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, MD9-04-11, 2 Medical Drive, Singapore 117593, Singapore; Institute of Bioengineering and Nanotechnology, A*STAR, The Nanos, #06-01, 31 Biopolis Way, Singapore 138669, Singapore
| | - Gowri M Balachander
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, MD9-04-11, 2 Medical Drive, Singapore 117593, Singapore
| | - Hwa Liang Leo
- Department of Biomedical Engineering, National University of Singapore, Engineering Drive 3, Engineering Block 4, #04-08, Singapore 117583, Singapore
| | - Qiongyu Guo
- Department of Biomedical Engineering, Southern University of Science and Technology, 1088 Xueyuan Avenue, Shenzhen 518055, China
| | - Imran Shah
- National Center for Computational Toxicology, United States Environmental Protection Agency, 4930 Old Page Rd., Durham, NC 27703, USA
| | - Hanry Yu
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, MD9-04-11, 2 Medical Drive, Singapore 117593, Singapore; Institute of Bioengineering and Nanotechnology, A*STAR, The Nanos, #06-01, 31 Biopolis Way, Singapore 138669, Singapore; Mechanobiology Institute, National University of Singapore, T-Lab, #05-01, 5A Engineering Drive 1, Singapore 117411, Singapore; CAMP, Singapore-MIT Alliance for Research and Technology, 1 CREATE Way, Level 4 Enterprise Wing, Singapore 138602, Singapore; Gastroenterology Department, Southern Medical University, Guangzhou 510515, China.
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19
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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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Ameliorative effect of salidroside from Rhodiola Rosea L. on the gut microbiota subject to furan-induced liver injury in a mouse model. Food Chem Toxicol 2019; 125:333-340. [DOI: 10.1016/j.fct.2019.01.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 01/08/2019] [Accepted: 01/10/2019] [Indexed: 01/06/2023]
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Vassiliou AG, Siaterli MZ, Frakolaki E, Gkogkosi P, Paspaltsis I, Sklaviadis T, Vassilacopoulou D, Vassilaki N. L-Dopa decarboxylase interaction with the major signaling regulator ΡΙ3Κ in tissues and cells of neural and peripheral origin. Biochimie 2019; 160:76-87. [PMID: 30796964 DOI: 10.1016/j.biochi.2019.02.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 02/17/2019] [Indexed: 12/17/2022]
Abstract
L-Dopa decarboxylase (DDC) catalyzes the decarboxylation of L-Dopa to dopamine and 5-hydroxytryptophan (5-HTP) to serotonin. Although DDC has been purified from a variety of peripheral organs, including the liver, kidney and pancreas, the physiological significance of the peripherally expressed enzyme is not yet fully understood. DDC has been considered as a potential novel biomarker for various types of cancer, however, the role of DDC in the development of hepatocellular carcinoma (HCC) remains to be evaluated. Phosphatidylinositol 3-kinase (PI3K), on the other hand, has been shown to play a key role in the tumorigenesis, proliferation, metastasis, apoptosis, and angiogenesis of HCC by regulating gene expression. We initially identified the interaction of DDC with PI3K by means of the phage display methodology. This association was further confirmed in human hepatocellular carcinoma cell lines, human embryonic kidney cells, human neuroblastoma cells, as well as mouse brain, by the use of specific antibodies raised against DDC and PI3K. Functional aspects of the above interaction were studied upon treatment with the DDC inhibitor carbidopa and the PI3K inhibitor LY294002. Interestingly, our data demonstrate the expression of the neuronal type DDC mRNA in HCC cells. The present investigation provides new evidence on the possible link of DDC with the PI3K pathway, underlining the biological significance of this complex enzyme.
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Affiliation(s)
- Alice G Vassiliou
- 1st Department of Critical Care Medicine & Pulmonary Services, GP Livanos and M Simou Laboratories, Evangelismos Hospital, Athens Medical School, National & Kapodistrian University of Athens, Ipsilantou 45-47, 10676, Athens, Greece; Section of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15701, Athens, Greece
| | - Maria-Zacharenia Siaterli
- Section of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15701, Athens, Greece
| | - Efseveia Frakolaki
- Molecular Virology Laboratory, Hellenic Pasteur Institute, 127 Vas. Sofias ave., 11521, Athens, Greece
| | - Panayiota Gkogkosi
- Section of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15701, Athens, Greece
| | - Ioannis Paspaltsis
- Laboratory of Pharmacology, School of Health Sciences, Department of Pharmacy, Aristotle University of Thessaloniki, University Campus, 54124, Thessaloniki, Greece
| | - Theodoros Sklaviadis
- Laboratory of Pharmacology, School of Health Sciences, Department of Pharmacy, Aristotle University of Thessaloniki, University Campus, 54124, Thessaloniki, Greece
| | - Dido Vassilacopoulou
- Section of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Panepistimiopolis, Zografou, 15701, Athens, Greece.
| | - Niki Vassilaki
- Molecular Virology Laboratory, Hellenic Pasteur Institute, 127 Vas. Sofias ave., 11521, Athens, Greece.
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Vagus-macrophage-hepatocyte link promotes post-injury liver regeneration and whole-body survival through hepatic FoxM1 activation. Nat Commun 2018; 9:5300. [PMID: 30546054 PMCID: PMC6294142 DOI: 10.1038/s41467-018-07747-0] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 11/23/2018] [Indexed: 12/18/2022] Open
Abstract
The liver possesses a high regenerative capacity. Liver regeneration is a compensatory response overcoming disturbances of whole-body homeostasis provoked by organ defects. Here we show that a vagus-macrophage-hepatocyte link regulates acute liver regeneration after liver injury and that this system is critical for promoting survival. Hepatic Foxm1 is rapidly upregulated after partial hepatectomy (PHx). Hepatic branch vagotomy (HV) suppresses this upregulation and hepatocyte proliferation, thereby increasing mortality. In addition, hepatic FoxM1 supplementation in vagotomized mice reverses the suppression of liver regeneration and blocks the increase in post-PHx mortality. Hepatic macrophage depletion suppresses both post-PHx Foxm1 upregulation and remnant liver regeneration, and increases mortality. Hepatic Il-6 rises rapidly after PHx and this is suppressed by HV, muscarinic blockade or resident macrophage depletion. Furthermore, IL-6 neutralization suppresses post-PHx Foxm1 upregulation and remnant liver regeneration. Collectively, vagal signal-mediated IL-6 production in hepatic macrophages upregulates hepatocyte FoxM1, leading to liver regeneration and assures survival. The mechanisms underlying the regenerative capacity of the liver are not fully understood. Here, the authors show that the acute regenerative response to liver injury in mice is regulated by the communication involving the vagus nerve, macrophages, and hepatocytes, leading to hepatic FoxM1 activation and promotion of overall survival.
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Behnke K, Zhuang Y, Xu HC, Sundaram B, Reich M, Shinde PV, Huang J, Modares NF, Tumanov AV, Polz R, Scheller J, Ware CF, Pfeffer K, Keitel V, Häussinger D, Pandyra AA, Lang KS, Lang PA. B Cell-Mediated Maintenance of Cluster of Differentiation 169-Positive Cells Is Critical for Liver Regeneration. Hepatology 2018; 68:2348-2361. [PMID: 29742809 PMCID: PMC6587814 DOI: 10.1002/hep.30088] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 05/07/2018] [Indexed: 12/19/2022]
Abstract
The liver has an extraordinary capacity to regenerate through activation of key molecular pathways. However, central regulators controlling liver regeneration remain insufficiently studied. Here, we show that B cell-deficient animals failed to induce sufficient liver regeneration after partial hepatectomy (PHx). Consistently, adoptive transfer of B cells could rescue defective liver regeneration. B cell-mediated lymphotoxin beta production promoted recovery from PHx. Absence of B cells coincided with loss of splenic cluster of differentiation 169-positive (CD169+ ) macrophages. Moreover, depletion of CD169+ cells resulted in defective liver regeneration and decreased survival, which was associated with reduced hepatocyte proliferation. Mechanistically, CD169+ cells contributed to liver regeneration by inducing hepatic interleukin-6 (IL-6) production and signal transducer and activator of transcription 3 activation. Accordingly, treatment of CD169+ cell-depleted animals with IL-6/IL-6 receptor rescued liver regeneration and severe pathology following PHx. Conclusion: We identified CD169+ cells to be a central trigger for liver regeneration, by inducing key signaling pathways important for liver regeneration.
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Affiliation(s)
| | - Yuan Zhuang
- Department of Molecular Medicine II, Medical Faculty
| | - Haifeng C. Xu
- Department of Molecular Medicine II, Medical Faculty
| | | | - Maria Reich
- Department of Gastroenterology, Hepatology, and Infectious Diseases and
| | | | - Jun Huang
- Department of Molecular Medicine II, Medical Faculty
| | - Nastaran Fazel Modares
- Institute of Biochemistry and Molecular Biology II, Medical FacultyHeinrich Heine UniversityDüsseldorfGermany
| | - Alexei V. Tumanov
- Department of Microbiology, Immunology & Molecular GeneticsUniversity of Texas Health Science CenterSan AntonioTX
| | - Robin Polz
- Institute of Biochemistry and Molecular Biology II, Medical FacultyHeinrich Heine UniversityDüsseldorfGermany
| | - Jürgen Scheller
- Institute of Biochemistry and Molecular Biology II, Medical FacultyHeinrich Heine UniversityDüsseldorfGermany
| | - Carl F. Ware
- Infectious and Inflammatory Diseases Research CenterSanford Burnham Prebys Medical Discovery InstituteLa JollaCA
| | - Klaus Pfeffer
- Institute of Medical Microbiology and Hospital HygieneUniversity Hospital, Heinrich Heine UniversityDüsseldorfGermany
| | - Verena Keitel
- Department of Gastroenterology, Hepatology, and Infectious Diseases and
| | - Dieter Häussinger
- Department of Gastroenterology, Hepatology, and Infectious Diseases and
| | | | - Karl S. Lang
- Institute of Immunology, Medical FacultyUniversity of Duisburg‐EssenEssenGermany
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Ray S, Mehta N, Golhar A, Nundy S. Post hepatectomy liver failure - A comprehensive review of current concepts and controversies. Ann Med Surg (Lond) 2018; 34:4-10. [PMID: 30181871 PMCID: PMC6120608 DOI: 10.1016/j.amsu.2018.08.012] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 07/24/2018] [Accepted: 08/14/2018] [Indexed: 02/06/2023] Open
Abstract
Post hepatectomy liver failure (PHLF) comprises of a conundrum of symptoms and signs following major hepatic resections. The pathophysiology essentially revolves around disruption of the normal hepatocyte regeneration and disturbed liver homeostasis. Prompt identification of the pre-operative predictors of PHLF in the form of biochemical parameters and imaging features are of paramount importance for any hepatic surgeon and forms the cornerstone of its management. Treatment revolves around a goal-directed resuscitation of the systemic organ failure. Auxiliary support systems such as liver dialysis devices and stem cell therapy are still under investigational trials for treatment of the same. Orthotopic liver transplantation (OLT) is the last resort in most cases not responding to other measures.
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Affiliation(s)
- S. Ray
- Department of Surgical Gastroenterology and Liver Transplantation, Sir Ganga Ram Hospital, New Delhi, India
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Le Roy B, Dupré A, Gallon A, Chabrot P, Gagnière J, Buc E. Liver hypertrophy: Underlying mechanisms and promoting procedures before major hepatectomy. J Visc Surg 2018; 155:393-401. [PMID: 30126801 DOI: 10.1016/j.jviscsurg.2018.03.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Various procedures can promote hypertrophy of the future liver remnant (FLR) before major hepatectomy to prevent postoperative liver failure. The pathophysiological situation following portal vein embolization (PVE), hepatic artery ligation/embolization or hepatectomy remains unclear. On one hand, the main mechanisms of hepatic regeneration appear to be driven by hepatic hypoxia (involving the hepatic arterial buffer response), an increased portal blood flow inducing shear stress and the involvement of several mediators (inflammatory cytokines, vasoregulators, growth factors, eicosanoids and several hormones). On the other hand, several factors are associated with impaired liver regeneration, such as biliary obstruction, malnutrition, diabetes mellitus, male gender, age, ethanol and viral infection. All these mechanisms may explain the varying degrees of hypertrophy observed following a surgical or radiological procedure promoting hypertrophy the FLR. Radiological procedures include left and right portal vein embolization (extended or not to segment 4), sequential PVE and hepatic vein embolization (HVE), and more recently combined PVE and HVE. Surgical procedures include associated liver partition and portal vein ligation for staged hepatectomy, and more recently the combined portal embolization and arterial ligation procedure. This review aimed to clarify the pathophysiology of liver regeneration; it also describes radiological or surgical procedures employed to improve liver regeneration in terms of volumetric changes, the feasibility of the second step and the benefits and drawbacks of each procedure.
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Affiliation(s)
- B Le Roy
- Department of Digestive and Hepatobiliary Surgery, Hôpital Estaing, CHU Clermont-Ferrand, 1, place Lucie-et-Raymond-Aubrac, 63003 Clermont-Ferrand, France; UMR Auvergne UMR 6602 UCA/CNRS/SIGMA, Clermont-Ferrand Faculty of Medicine, 28, place Henri-Dunant, 63000 Clermont-Ferrand, France.
| | - A Dupré
- Inserm, LabTAU UMR1032, Centre Léon-Bérard, Université Claude-Bernard Lyon 1, 69003 Lyon, France
| | - A Gallon
- Department of Vascular Radiology, Hôpital Gabriel Montpied, CHU Clermont-Ferrand, place Henri-Dunant, 63000 Clermont-Ferrand, France; UMR Auvergne UMR 6602 UCA/CNRS/SIGMA, Clermont-Ferrand Faculty of Medicine, 28, place Henri-Dunant, 63000 Clermont-Ferrand, France
| | - P Chabrot
- Department of Vascular Radiology, Hôpital Gabriel Montpied, CHU Clermont-Ferrand, place Henri-Dunant, 63000 Clermont-Ferrand, France; UMR Auvergne UMR 6602 UCA/CNRS/SIGMA, Clermont-Ferrand Faculty of Medicine, 28, place Henri-Dunant, 63000 Clermont-Ferrand, France
| | - J Gagnière
- Department of Digestive and Hepatobiliary Surgery, Hôpital Estaing, CHU Clermont-Ferrand, 1, place Lucie-et-Raymond-Aubrac, 63003 Clermont-Ferrand, France
| | - E Buc
- Department of Digestive and Hepatobiliary Surgery, Hôpital Estaing, CHU Clermont-Ferrand, 1, place Lucie-et-Raymond-Aubrac, 63003 Clermont-Ferrand, France; UMR Auvergne UMR 6602 UCA/CNRS/SIGMA, Clermont-Ferrand Faculty of Medicine, 28, place Henri-Dunant, 63000 Clermont-Ferrand, France
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Peroxisome Proliferator-Activated Receptor gamma negatively regulates liver regeneration after partial hepatectomy via the HGF/c-Met/ERK1/2 pathways. Sci Rep 2018; 8:11894. [PMID: 30089804 PMCID: PMC6082852 DOI: 10.1038/s41598-018-30426-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 07/29/2018] [Indexed: 01/04/2023] Open
Abstract
Peroxisome Proliferator-Activated Receptor gamma (PPARγ) is a nuclear receptor demonstrated to play an important role in various biological processes. The aim of this study was to determine the effect of PPARγ on liver regeneration upon partial hepatectomy (PH) in mice. Mice were subjected to two-thirds PH. Before surgery, mice were either treated with the PPARγ agonist rosiglitazone, the PPARγ antagonist GW9662 alone, or with the c-met inhibitor SGX523. Liver-to-body-weight ratio, lab values, and proliferation markers were assessed. Components of the PPARγ-specific signaling pathway were identified by western blot and qRT-PCR. Our results show that liver regeneration is being inhibited by rosiglitazone and accelerated by GW9662. Inhibition of c-Met by SGX523 treatment abrogates GW9662-induced liver regeneration and hepatocyte proliferation. Hepatocyte growth factor (HGF) protein levels were significantly downregulated after rosiglitazone treatment. Activation of HGF/c-Met pathways by phosphorylation of c-Met and ERK1/2 were inhibited in rosiglitazone-treated mice. In turn, blocking phosphorylation of c-Met significantly abrogated the augmented effect of GW9662 on liver regeneration. Our data support the concept that PPARγ abrogates liver growth and hepatocellular proliferation by inhibition of the HGF/c-Met/ERK1/2 pathways. These pathways may represent potential targets in response to liver disease and could impact on the development of molecular therapies.
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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: 20] [Impact Index Per Article: 3.3] [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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He ZH, He WR, Li Q, Xiao W, Peng NF, Mo SF, Wei YN. Endoscopic characteristics of bile duct lesions and duodenal papilla in patients with bile duct stones and pneumatosis. Shijie Huaren Xiaohua Zazhi 2018; 26:465-473. [DOI: 10.11569/wcjd.v26.i7.465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the characteristics of biliary pathogenic bacteria, pathological changes of bile ducts, and changes of duodenal papilla in patients with bile duct stones and pneumatosis.
METHODS We analyzed biliary pathogenic bacteria, pathological changes of bile ducts, and characteristics of duodenal papilla in 53 patients with bile duct stones and pneumatosis. The incidence of intestinal juice reflux and recurrent biliary infection and bile duct diameter were compared in each subtype of duodenal papilla.
RESULTS The results of bacterial culture showed that the percentages of Gram positive bacteria, Gram negative bacteria, and fungi were 42.1%, 57.9%, and 1.8%, respectively. The main bacteria were Enterococcus (36.6%), Escherichia coli (19.3%), and Klebsiella pneumoniae (15.8%). Chronic bile duct inflammation, duodenal papillary inflammation, incomplete closure of duodenal papilla, and Oddi sphincter relaxation were common features in patients with bile duct stones and pneumatosis. Chronic inflammation and abnormal hyperplasia of the bile duct mucosa were found in 16 patients, which manifested as intestinal villous change, mucous pits, and reticular pattern. Seven patients had local mass in the bile duct. There was a significant difference in bile duct diameter among each subtype of papilla (P < 0.001). Common bile duct diameter was significantly bigger in IIb and IIc subtypes than in IIa and IId subtypes (P < 0.05), but there was no significant difference between IIb and IIc and between IIa and IId (P > 0.05). The rate of intestinal juice reflux differed significantly among each subtype of papilla (P < 0.05), and the rate of intestinal juice reflux was significantly higher in IIa subtype than in other subtypes. However, the rate of recurrent biliary infection showed no significant difference among each subtype of papilla (P > 0.05).
CONCLUSION Bacterial infection is the main etiology in patients with bile duct stones and pneumatosis, and the percentage of Gram positive bacteria is higher. Chronic bile duct inflammation, duodenal papillary inflammation, incomplete closure of duodenal papilla, and Oddi sphincter relaxation are common features in patients with bile duct stones and pneumatosis. There is a significant difference in bile duct diameter and the rate of intestinal juice reflux among each subtype of duodenal papilla, while there is no significant difference in the rate of recurrent biliary infection.
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Sable SA, Maheshwari S, Sharma S, Yadav K, Chauhan A, Kapoor S, Varma V, Kumaran V. Kinetics of liver regeneration in donors after living donor liver transplantation: A retrospective analysis of "2/3rd partial hepatectomy" model at 3 months. Indian J Gastroenterol 2018; 37:133-140. [PMID: 29594724 DOI: 10.1007/s12664-018-0838-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 03/01/2018] [Indexed: 02/04/2023]
Abstract
BACKGROUND/AIM Right lobe living donor (2/3rd partial hepatectomy) model is the best way to accurately study liver regeneration process in human beings. We aimed to study the kinetics of liver regeneration after 2/3rd partial hepatectomy in donors. METHODS Retrospective analysis of prospectively maintained volumetric recovery data in donors was performed in 23 donors, who underwent 29 contrast-enhanced computed tomography within 3 months for various clinical indications. RESULTS The absolute volumetric growth percentages were as follows: 37.60 ± 21.74 at 1st week, 92 ± 53.27 at 2nd week, 115.55 ± 59.65 at 4th week, and 110.79 ± 64.47 at 3 months. On sub-group analysis of our cohort, we found that 4.3%, 17%, 30.4%, and 39% donors attended ≥ 90% volumetric recovery at 1st, 2nd, 4th week, and 3 months, respectively. One patient at 4th week revealed 128% volumetric recovery. There was one more patient who exceeded original total liver volumes (TLV) (111% of TLV) at 2.5 months. The serum bilirubin and INR values peaked at postoperative day (POD) 3rd and then started showing a downward trend from POD 5th onwards. CONCLUSION Our study is the first to document complete volumetric recovery in donors as early as 3 weeks. Two of the donors overshot their original TLV during the early regenerative phase.
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Affiliation(s)
- Shailesh Anand Sable
- Department of Liver Transplantation and HPB Surgery, Kokilaben Dhirubhai Ambani Hospital, Mumbai, 400 053, India.
| | - Sharad Maheshwari
- Department of Radio-Diagnosis, Kokilaben Dhirubhai Ambani Hospital, Mumbai, 400 053, India
| | - Swapnil Sharma
- Department of Liver Transplantation and HPB Surgery, Kokilaben Dhirubhai Ambani Hospital, Mumbai, 400 053, India
| | - Kapildev Yadav
- Department of Liver Transplantation and HPB Surgery, Kokilaben Dhirubhai Ambani Hospital, Mumbai, 400 053, India
| | - Ashutosh Chauhan
- Department of Liver Transplantation and HPB Surgery, Kokilaben Dhirubhai Ambani Hospital, Mumbai, 400 053, India
| | - Sorabh Kapoor
- Department of Liver Transplantation and HPB Surgery, Kokilaben Dhirubhai Ambani Hospital, Mumbai, 400 053, India
| | - Vibha Varma
- Department of Liver Transplantation and HPB Surgery, Kokilaben Dhirubhai Ambani Hospital, Mumbai, 400 053, India
| | - Vinay Kumaran
- Department of Liver Transplantation and HPB Surgery, Kokilaben Dhirubhai Ambani Hospital, Mumbai, 400 053, India
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Mizumoto H, Amimoto N, Miyazawa T, Tani H, Ikeda K, Kajiwara T. In vitro and ex vivo Functional Evaluation of a Hollow Fiber-type Bioartificial Liver Module Containing ES Cell-derived Hepatocyte-like Cells. ADVANCED BIOMEDICAL ENGINEERING 2018. [DOI: 10.14326/abe.7.18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Hiroshi Mizumoto
- Department of Chemical Engineering, Faculty of Engineering, Kyushu University
| | - Naoki Amimoto
- Department of Chemical Engineering, Faculty of Engineering, Kyushu University
| | - Toru Miyazawa
- Department of Chemical Engineering, Faculty of Engineering, Kyushu University
| | - Hideki Tani
- Department of Chemical Engineering, Faculty of Engineering, Kyushu University
| | - Kaoru Ikeda
- Department of Chemical Engineering, Faculty of Engineering, Kyushu University
| | - Toshihisa Kajiwara
- Department of Chemical Engineering, Faculty of Engineering, Kyushu University
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Lavoie EG, Fausther M, Goree JR, Dranoff JA. The Cholangiocyte Adenosine-IL-6 Axis Regulates Survival During Biliary Cirrhosis. Gene Expr 2017; 17:327-340. [PMID: 28893353 PMCID: PMC5885153 DOI: 10.3727/105221617x15042723767876] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Epithelial response to injury is critical to the pathogenesis of biliary cirrhosis, and IL-6 has been suggested as a mediator of this phenomenon. Several liver cell types can secrete IL-6 following activation by various signaling molecules including circulating adenosine. The aims of this study were to assess whether adenosine can induce IL-6 secretion by cholangiocytes via the A2b adenosine receptor (A2bAR) and to determine the effect of A2bAR-sensitive IL-6 release on injury response in biliary cirrhosis. Human normal cholangiocyte H69 cells were used for in vitro studies to determine the mechanism by which adenosine and the A2bAR induce release of IL-6. In vivo, control and A2bAR-deficient mice were used to determine the roles of A2bAR-sensitive IL-6 release in biliary cirrhosis induced by common bile duct ligation (BDL). Additionally, the response to exogenous IL-6 was assessed in C57BL/6 and A2bAR-deficient mice. Adenosine induced IL-6 mRNA expression and protein secretion via A2bAR activation. Although activation of A2bAR induced cAMP and intracellular Ca2+ signals, only the Ca2+ signals were linked to IL-6 upregulation. After BDL, A2bAR-deficient mice have impaired survival, which is further impaired by exogenous IL-6; however, decreased survival is not due to changes in fibrosis and no changes in inflammatory cells. Exogenous IL-6 is associated with the increased presence of bile infarcts. Extracellular adenosine induces cholangiocyte IL-6 release via the A2bAR. This signaling pathway is important in the pathogenesis of injury response in biliary cirrhosis but does not alter fibrosis. Adenosine upregulates IL-6 release by cholangiocytes via the A2bAR in a calcium-sensitive fashion. Mice deficient in A2bAR experience impaired survival after biliary cirrhosis induced by common bile duct ligation independent of changes in fibrosis.
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Affiliation(s)
- Elise G. Lavoie
- *Division of Gastroenterology and Hepatology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- †Research Service, Central Arkansas VA Healthcare System, Little Rock, AR, USA
| | - Michel Fausther
- *Division of Gastroenterology and Hepatology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- †Research Service, Central Arkansas VA Healthcare System, Little Rock, AR, USA
| | - Jessica R. Goree
- *Division of Gastroenterology and Hepatology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- †Research Service, Central Arkansas VA Healthcare System, Little Rock, AR, USA
| | - Jonathan A. Dranoff
- *Division of Gastroenterology and Hepatology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- †Research Service, Central Arkansas VA Healthcare System, Little Rock, AR, USA
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Xue D, Xue Y, Niu Z, Guo X, Xu C. Expression analysis on 14-3-3 proteins in regenerative liver following partial hepatectomy. Genet Mol Biol 2017; 40:855-859. [PMID: 29111562 PMCID: PMC5738624 DOI: 10.1590/1678-4685-gmb-2017-0029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 07/20/2017] [Indexed: 12/14/2022] Open
Abstract
14-3-3 proteins play a vital part in the regulation of cell cycle and apoptosis
as signaling integration points. During liver regeneration, the quiescent
hepatocytes go through hypertrophy and proliferation to restore liver weight.
Therefore, we speculated that 14-3-3 proteins regulate the progression of liver
regeneration. In this study, we analyzed the expression patterns of 14-3-3
proteins during liver regeneration of rat to provide an insight into the
regenerative mechanism using western blotting. Only four isoforms (γ, ε, σ and
τ/θ) of the 14-3-3 proteins were expressed in regenerative liver after partial
hepatectomy (PH). The dual effects, the significant down-regulation of 14-3-3ε
and the significant up-regulation of 14-3-3τ/θ at 2 h after PH, might play
particularly important roles in S-phase entry. The significant peaks of 14-3-3σ
at 30 h and of ε and τ/θ at 24 h might be closely related not only to the
G2/M transition but also to the size of hepatocytes. Possibly,
the peak of 14-3-3ε expression seen at 168 h plays critical roles in the
termination of liver regeneration by inhibiting cellular proliferation.
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Affiliation(s)
- Deming Xue
- College of Life Science, Henan Normal University, Xinxiang, Henan, China.,Key Laboratory for Cell Differentiation Regulation, Xinxiang, Henan, China
| | - Yang Xue
- Academy of Fine Arts, Henan Normal University, Xinxiang, Henan, China
| | - Zhipeng Niu
- College of Life Science, Henan Normal University, Xinxiang, Henan, China.,Key Laboratory for Cell Differentiation Regulation, Xinxiang, Henan, China
| | - Xueqiang Guo
- College of Life Science, Henan Normal University, Xinxiang, Henan, China.,Key Laboratory for Cell Differentiation Regulation, Xinxiang, Henan, China
| | - Cunshuan Xu
- College of Life Science, Henan Normal University, Xinxiang, Henan, China.,Key Laboratory for Cell Differentiation Regulation, Xinxiang, Henan, China
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33
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Sobotta S, Raue A, Huang X, Vanlier J, Jünger A, Bohl S, Albrecht U, Hahnel MJ, Wolf S, Mueller NS, D'Alessandro LA, Mueller-Bohl S, Boehm ME, Lucarelli P, Bonefas S, Damm G, Seehofer D, Lehmann WD, Rose-John S, van der Hoeven F, Gretz N, Theis FJ, Ehlting C, Bode JG, Timmer J, Schilling M, Klingmüller U. Model Based Targeting of IL-6-Induced Inflammatory Responses in Cultured Primary Hepatocytes to Improve Application of the JAK Inhibitor Ruxolitinib. Front Physiol 2017; 8:775. [PMID: 29062282 PMCID: PMC5640784 DOI: 10.3389/fphys.2017.00775] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 09/22/2017] [Indexed: 12/12/2022] Open
Abstract
IL-6 is a central mediator of the immediate induction of hepatic acute phase proteins (APP) in the liver during infection and after injury, but increased IL-6 activity has been associated with multiple pathological conditions. In hepatocytes, IL-6 activates JAK1-STAT3 signaling that induces the negative feedback regulator SOCS3 and expression of APPs. While different inhibitors of IL-6-induced JAK1-STAT3-signaling have been developed, understanding their precise impact on signaling dynamics requires a systems biology approach. Here we present a mathematical model of IL-6-induced JAK1-STAT3 signaling that quantitatively links physiological IL-6 concentrations to the dynamics of IL-6-induced signal transduction and expression of target genes in hepatocytes. The mathematical model consists of coupled ordinary differential equations (ODE) and the model parameters were estimated by a maximum likelihood approach, whereas identifiability of the dynamic model parameters was ensured by the Profile Likelihood. Using model simulations coupled with experimental validation we could optimize the long-term impact of the JAK-inhibitor Ruxolitinib, a therapeutic compound that is quickly metabolized. Model-predicted doses and timing of treatments helps to improve the reduction of inflammatory APP gene expression in primary mouse hepatocytes close to levels observed during regenerative conditions. The concept of improved efficacy of the inhibitor through multiple treatments at optimized time intervals was confirmed in primary human hepatocytes. Thus, combining quantitative data generation with mathematical modeling suggests that repetitive treatment with Ruxolitinib is required to effectively target excessive inflammatory responses without exceeding doses recommended by the clinical guidelines.
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Affiliation(s)
- Svantje Sobotta
- Division Systems Biology of Signal Transduction, German Cancer Research Center, Heidelberg, Germany
| | - Andreas Raue
- Discovery Division, Merrimack Pharmaceuticals, Cambridge, MA, United States
| | - Xiaoyun Huang
- Division Systems Biology of Signal Transduction, German Cancer Research Center, Heidelberg, Germany
| | - Joep Vanlier
- Institute of Physics, Albert Ludwigs University of Freiburg, Freiburg, Germany.,BIOSS Centre for Biological Signalling Studies, Albert Ludwigs University of Freiburg, Freiburg, Germany
| | - Anja Jünger
- Division Systems Biology of Signal Transduction, German Cancer Research Center, Heidelberg, Germany
| | - Sebastian Bohl
- Division Systems Biology of Signal Transduction, German Cancer Research Center, Heidelberg, Germany
| | - Ute Albrecht
- Clinic of Gastroenterology, Hepatology and Infectious Diseases, University Hospital, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Maximilian J Hahnel
- Clinic of Gastroenterology, Hepatology and Infectious Diseases, University Hospital, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Stephanie Wolf
- Clinic of Gastroenterology, Hepatology and Infectious Diseases, University Hospital, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Nikola S Mueller
- Institute of Computational Biology, Helmholtz Zentrum München, Neuherberg, Germany
| | - Lorenza A D'Alessandro
- Division Systems Biology of Signal Transduction, German Cancer Research Center, Heidelberg, Germany
| | - Stephanie Mueller-Bohl
- Division Systems Biology of Signal Transduction, German Cancer Research Center, Heidelberg, Germany
| | - Martin E Boehm
- Division Systems Biology of Signal Transduction, German Cancer Research Center, Heidelberg, Germany
| | - Philippe Lucarelli
- Division Systems Biology of Signal Transduction, German Cancer Research Center, Heidelberg, Germany
| | - Sandra Bonefas
- Division Systems Biology of Signal Transduction, German Cancer Research Center, Heidelberg, Germany
| | - Georg Damm
- Department of Hepatobiliary Surgery and Visceral Transplantation, Leipzig University, Leipzig, Germany
| | - Daniel Seehofer
- Department of Hepatobiliary Surgery and Visceral Transplantation, Leipzig University, Leipzig, Germany
| | - Wolf D Lehmann
- Division Systems Biology of Signal Transduction, German Cancer Research Center, Heidelberg, Germany
| | | | - Frank van der Hoeven
- Transgenic Service, Center for Preclinical Research, German Cancer Research Center, Heidelberg, Germany
| | - Norbert Gretz
- Medical Research Center, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Fabian J Theis
- Institute of Computational Biology, Helmholtz Zentrum München, Neuherberg, Germany.,Department of Mathematics, Technical University of Munich, Garching, Germany
| | - Christian Ehlting
- Clinic of Gastroenterology, Hepatology and Infectious Diseases, University Hospital, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Johannes G Bode
- Clinic of Gastroenterology, Hepatology and Infectious Diseases, University Hospital, Heinrich Heine University of Düsseldorf, Düsseldorf, Germany
| | - Jens Timmer
- Institute of Physics, Albert Ludwigs University of Freiburg, Freiburg, Germany.,BIOSS Centre for Biological Signalling Studies, Albert Ludwigs University of Freiburg, Freiburg, Germany
| | - Marcel Schilling
- Division Systems Biology of Signal Transduction, German Cancer Research Center, Heidelberg, Germany
| | - Ursula Klingmüller
- Division Systems Biology of Signal Transduction, German Cancer Research Center, Heidelberg, Germany
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34
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Potential mechanism of protection effect of exopolysaccharide from Lachnum YM406 and its derivatives on carbon tetrachloride-induced acute liver injury in mice. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.06.057] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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35
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Chen XG, Liu YM, Lv QX, Ma J. Enhancement or inhibition of PLCγ2 expression in rat hepatocytes by recombinant adenoviral vectors that contain full-length gene or siRNA. Biotech Histochem 2017; 92:436-444. [PMID: 28836860 DOI: 10.1080/10520295.2017.1355475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
We investigated the effects of recombinant adenovirus vectors that overexpress or silence PLCγ2 on the expression of this gene during hepatocyte proliferation. Hepatocytes were isolated, identified by immunofluorescent cytochemical staining and infected by previously constructed Ad-PLCγ2 and Ad-PLCγ2 siRNA1, siRNA2 and siRNA3. Green fluorescent protein (GFP) expression was observed by fluorescence microscopy. Infection percentage was calculated by flow cytometry. mRNA and protein levels of PLCγ2 were detected by quantitative reverse transcription-PCR (qRT-PCR) and western blotting, respectively. The viability of the infected hepatocytes was measured by 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay. We found that nearly 97% of cells were positive for the hepatocyte marker, CK18. After infection of Ad-PLCγ2 and Ad-PLCγ2 siRNA, more than 99% of hepatocytes expressed GFP significantly, and mRNA and protein expression of PLCγ2 was up-regulated significantly in Ad-PLCγ2 infected hepatocytes, but down-regulated in Ad-PLCγ2 siRNA2 infected cells. The cell proliferation rate decreased in PLCγ2-overexpressing cells, while the rate increased in PLCγ2-silencing cells. We verified that recombinant Ad-PLCγ2 and Ad-PLCγ2 siRNA2 were constructed successfully. These two recombinant vectors promoted or decreased the expression of PLCγ2 in rat hepatocytes and affected the cell proliferation rate, which provides a useful tool for further investigation of the role of PLCγ2 in hepatocyte apoptosis.
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Affiliation(s)
- X G Chen
- a Animal Science and Technology School , Henan University of Science and Technology , Luoyang , China
| | - Y M Liu
- a Animal Science and Technology School , Henan University of Science and Technology , Luoyang , China
| | - Q X Lv
- a Animal Science and Technology School , Henan University of Science and Technology , Luoyang , China
| | - J Ma
- a Animal Science and Technology School , Henan University of Science and Technology , Luoyang , China
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36
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Canbek M, Uyanoglu M, Canbek S, Ceyhan E, Ozen A, Durmus B, Turgak O. The Effect of Geraniol on Liver Regeneration After Hepatectomy in Rats. ACTA ACUST UNITED AC 2017; 31:209-213. [PMID: 28358702 DOI: 10.21873/invivo.11047] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 01/31/2017] [Accepted: 02/07/2017] [Indexed: 02/05/2023]
Abstract
Geraniol is a monoterpenoid alcohol that has a hepatoprotective effect. We investigated the regenerative effects of geraniol in rats after a 70% partial hepatectomy (PH). Using Wistar albino rats, nine groups were created: Group I was the control group, while the remaining groups received a single intraperitoneal dose of saline, Silymarin, or geraniol after PH. A 70% PH was performed on all groups except for groups II and III. Blood serum samples were obtained for alanine amino transferase (ALT) analysis. Then liver tissues were harvested for histological and real-time polymerase chain reaction (PCR) analyses. Tumor necrosis factor-α (TNFα) and interleukin 6 (IL6) gene expression were examined 24 and 48 h after PH. ALT levels were found to be statistically significantly increased in all PH-treated groups. TNFα and IL6 gene expression levels were elevated in geraniol-treated groups. Histological evaluation revealed a hepatoprotective effect for geraniol-treated groups. Our results suggest that geraniol plays a significant role during liver regeneration, which involves the elevated expression of TNFα and IL6 48 h after PH.
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Affiliation(s)
- Mediha Canbek
- Department of Biology, Faculty of Science, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Mustafa Uyanoglu
- Department of Biology, Faculty of Science, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Selcuk Canbek
- Department of Computer Engineering, Faculty of Engineering and Architecture, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Emre Ceyhan
- Department of Biology, Faculty of Science, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Ahmet Ozen
- Department of Biology, Faculty of Science, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Basak Durmus
- Department of Biology, Faculty of Science, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Ozge Turgak
- Department of Biology, Faculty of Science, Eskisehir Osmangazi University, Eskisehir, Turkey
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37
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Oya Y, Masuzaki R, Tsugawa D, Ray KC, Dou Y, Karp SJ. Dicer-dependent production of microRNA221 in hepatocytes inhibits p27 and is required for liver regeneration in mice. Am J Physiol Gastrointest Liver Physiol 2017; 312:G464-G473. [PMID: 28232457 PMCID: PMC5451560 DOI: 10.1152/ajpgi.00383.2016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 02/15/2017] [Accepted: 02/15/2017] [Indexed: 01/31/2023]
Abstract
Dicer processes microRNAs (miRs) into active forms in a wide variety of tissues, including the liver. To determine the role of Dicer in liver regeneration, we performed a series of in vivo and in vitro studies in a murine 2/3 hepatectomy model. Dicer was downregulated after 2/3 hepatectomy, and loss of Dicer inhibited liver regeneration associated with decreased cyclin A2 and miR-221, as well as increased levels of the cell cycle inhibitor p27. In vitro, miR-221 inhibited p27 production in primary hepatocytes and increased hepatocyte proliferation. Specific reconstitution of miR-221 in hepatocyte-specific Dicer-null mice inhibited p27 and restored liver regeneration. In wild type mice, targeted inhibition of miR-221 using a cholesterol-conjugated miR-221 inhibited hepatocyte proliferation after 2/3 hepatectomy. These results identify Dicer production of miR-221 as an essential component of a miRNA-dependent mechanism for suppression of p27 that controls the rate of hepatocyte proliferation after partial hepatectomy.NEW & NOTEWORTHY Our findings demonstrate a direct role for microRNAs in controlling the rate of liver regeneration after injury. By deleting Dicer, an enzyme responsible for processing microRNAs into mature forms, we determined miR-221 is a critical microRNA in the physiological process of restoration of liver mass after injury. miR-221 suppresses p27, releasing its inhibitory effects on hepatocyte proliferation. Pharmaceuticals based on miR-221 may be useful to modulate hepatocyte proliferation in the setting of liver injury.
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Affiliation(s)
- Yuki Oya
- 1Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee; and
| | - Ryota Masuzaki
- 1Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee; and
| | - Daisuke Tsugawa
- 1Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee; and
| | - Kevin C. Ray
- 1Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee; and
| | - Yongchao Dou
- 2Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Seth J. Karp
- 1Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee; and
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38
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Lanton T, Shriki A, Nechemia-Arbely Y, Abramovitch R, Levkovitch O, Adar R, Rosenberg N, Paldor M, Goldenberg D, Sonnenblick A, Peled A, Rose-John S, Galun E, Axelrod JH. Interleukin 6-dependent genomic instability heralds accelerated carcinogenesis following liver regeneration on a background of chronic hepatitis. Hepatology 2017; 65:1600-1611. [PMID: 28027584 DOI: 10.1002/hep.29004] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 11/23/2016] [Accepted: 12/11/2016] [Indexed: 01/05/2023]
Abstract
UNLABELLED Liver cancer, which typically develops on a background of chronic liver inflammation, is now the second leading cause of cancer mortality worldwide. For patients with liver cancer, surgical resection is a principal treatment modality that offers a chance of prolonged survival. However, tumor recurrence after resection, the mechanisms of which remain obscure, markedly limits the long-term survival of these patients. We have shown that partial hepatectomy in multidrug resistance 2 knockout (Mdr2-/- ) mice, a model of chronic inflammation-associated liver cancer, significantly accelerates hepatocarcinogenesis. Here, we explore the postsurgical mechanisms that drive accelerated hepatocarcinogenesis in Mdr2-/- mice by perioperative pharmacological inhibition of interleukin-6 (IL6), which is a crucial liver regeneration priming cytokine. We demonstrate that inhibition of IL6 signaling dramatically impedes tumorigenesis following partial hepatectomy without compromising survival or liver mass recovery. IL6 blockade significantly inhibited hepatocyte cell cycle progression while promoting a hypertrophic regenerative response, without increasing apoptosis. Mdr2-/- mice contain hepatocytes with a notable persistent DNA damage response (γH2AX, 53BP1) due to chronic inflammation. We show that liver regeneration in this microenvironment leads to a striking increase in hepatocytes bearing micronuclei, a marker of genomic instability, which is suppressed by IL6 blockade. CONCLUSION Our findings indicate that genomic instability derived during the IL6-mediated liver regenerative response within a milieu of chronic inflammation links partial hepatectomy to accelerated hepatocarcinogenesis; this suggests a new therapeutic approach through the usage of an anti-IL6 treatment to extend the tumor-free survival of patients undergoing surgical resection. (Hepatology 2017;65:1600-1611).
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Affiliation(s)
| | | | | | - Rinat Abramovitch
- Goldyne Savad Institute of Gene Therapy.,Magnetic Resonance Imaging/Magnetic Resonance Spectroscopy Laboratory, Human Biology Research Center
| | | | | | | | | | | | - Amir Sonnenblick
- Sharett Institute of Oncology, Hadassah Medical Center, Jerusalem, Israel
| | | | - Stefan Rose-John
- Institut für Biochemie, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
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39
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Cellular Mechanisms of Liver Regeneration and Cell-Based Therapies of Liver Diseases. BIOMED RESEARCH INTERNATIONAL 2017; 2017:8910821. [PMID: 28210629 PMCID: PMC5292184 DOI: 10.1155/2017/8910821] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 11/29/2016] [Accepted: 12/27/2016] [Indexed: 12/14/2022]
Abstract
The emerging field of regenerative medicine offers innovative methods of cell therapy and tissue/organ engineering as a novel approach to liver disease treatment. The ultimate scientific foundation of both cell therapy of liver diseases and liver tissue and organ engineering is delivered by the in-depth studies of the cellular and molecular mechanisms of liver regeneration. The cellular mechanisms of the homeostatic and injury-induced liver regeneration are unique. Restoration of the mass of liver parenchyma is achieved by compensatory hypertrophy and hyperplasia of the differentiated parenchymal cells, hepatocytes, while expansion and differentiation of the resident stem/progenitor cells play a minor or negligible role. Participation of blood-borne cells of the bone marrow origin in liver parenchyma regeneration has been proven but does not exceed 1-2% of newly formed hepatocytes. Liver regeneration is activated spontaneously after injury and can be further stimulated by cell therapy with hepatocytes, hematopoietic stem cells, or mesenchymal stem cells. Further studies aimed at improving the outcomes of cell therapy of liver diseases are underway. In case of liver failure, transplantation of engineered liver can become the best option in the foreseeable future. Engineering of a transplantable liver or its major part is an enormous challenge, but rapid progress in induced pluripotency, tissue engineering, and bioprinting research shows that it may be doable.
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40
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Paranjpe S, Bowen WC, Mars WM, Orr A, Haynes MM, DeFrances MC, Liu S, Tseng GC, Tsagianni A, Michalopoulos GK. Combined systemic elimination of MET and epidermal growth factor receptor signaling completely abolishes liver regeneration and leads to liver decompensation. Hepatology 2016; 64:1711-1724. [PMID: 27397846 PMCID: PMC5074871 DOI: 10.1002/hep.28721] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 07/06/2016] [Indexed: 02/06/2023]
Abstract
UNLABELLED Receptor tyrosine kinases MET and epidermal growth factor receptor (EGFR) are critically involved in initiation of liver regeneration. Other cytokines and signaling molecules also participate in the early part of the process. Regeneration employs effective redundancy schemes to compensate for the missing signals. Elimination of any single extracellular signaling pathway only delays but does not abolish the process. Our present study, however, shows that combined systemic elimination of MET and EGFR signaling (MET knockout + EGFR-inhibited mice) abolishes liver regeneration, prevents restoration of liver mass, and leads to liver decompensation. MET knockout or simply EGFR-inhibited mice had distinct and signaling-specific alterations in Ser/Thr phosphorylation of mammalian target of rapamycin, AKT, extracellular signal-regulated kinases 1/2, phosphatase and tensin homolog, adenosine monophosphate-activated protein kinase α, etc. In the combined MET and EGFR signaling elimination of MET knockout + EGFR-inhibited mice, however, alterations dependent on either MET or EGFR combined to create shutdown of many programs vital to hepatocytes. These included decrease in expression of enzymes related to fatty acid metabolism, urea cycle, cell replication, and mitochondrial functions and increase in expression of glycolysis enzymes. There was, however, increased expression of genes of plasma proteins. Hepatocyte average volume decreased to 35% of control, with a proportional decrease in the dimensions of the hepatic lobules. Mice died at 15-18 days after hepatectomy with ascites, increased plasma ammonia, and very small livers. CONCLUSION MET and EGFR separately control many nonoverlapping signaling endpoints, allowing for compensation when only one of the signals is blocked, though the combined elimination of the signals is not tolerated; the results provide critical new information on interactive MET and EGFR signaling and the contribution of their combined absence to regeneration arrest and liver decompensation. (Hepatology 2016;64:1711-1724).
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Affiliation(s)
- Shirish Paranjpe
- Department of Pathology, School of Medicine, University of Pittsburgh
| | - William C. Bowen
- Department of Pathology, School of Medicine, University of Pittsburgh
| | - Wendy M. Mars
- Department of Pathology, School of Medicine, University of Pittsburgh
| | - Anne Orr
- Department of Pathology, School of Medicine, University of Pittsburgh
| | - Meagan M. Haynes
- Department of Pathology, School of Medicine, University of Pittsburgh
| | | | - Silvia Liu
- Department of Biostatistics, Graduate School of Public Health, University of Pittsburgh
| | - George C. Tseng
- Department of Biostatistics, Graduate School of Public Health, University of Pittsburgh
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41
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Herrero A, Prigent J, Lombard C, Rosseels V, Daujat-Chavanieu M, Breckpot K, Najimi M, Deblandre G, Sokal EM. Adult-Derived Human Liver Stem/Progenitor Cells Infused 3 Days Postsurgery Improve Liver Regeneration in a Mouse Model of Extended Hepatectomy. Cell Transplant 2016; 26:351-364. [PMID: 27657746 DOI: 10.3727/096368916x692960] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
There is growing evidence that cell therapy constitutes a promising strategy for liver regenerative medicine. In the setting of hepatic cancer treatments, cell therapy could prove a useful therapeutic approach for managing the acute liver failure that occurs following extended hepatectomy. In this study, we examined the influence of delivering adult-derived human liver stem/progenitor cells (ADHLSCs) at two different early time points in an immunodeficient mouse model (Rag2-/-IL2Rγ-/-) that had undergone a 70% hepatectomy procedure. The hepatic mesenchymal cells were intrasplenically infused either immediately after surgery (n = 26) or following a critical 3-day period (n = 26). We evaluated the cells' capacity to engraft at day 1 and day 7 following transplantation by means of human Alu qPCR quantification, along with histological assessment of human albumin and α-smooth muscle actin. In addition, cell proliferation (anti-mouse and human Ki-67 staining) and murine liver weight were measured in order to evaluate liver regeneration. At day 1 posttransplantation, the ratio of human to mouse cells was similar in both groups, whereas 1 week posttransplantation this ratio was significantly improved (p < 0.016) in mice receiving ADHLSC injection at day 3 posthepatectomy (1.7%), compared to those injected at the time of surgery (1%). On the basis of liver weight, mouse liver regeneration was more extensive 1 week posttransplantation in mice transplanted with ADHLSCs (+65.3%) compared to that of mice from the sham vehicle group (+42.7%). In conclusion, infusing ADHLSCs 3 days after extensive hepatectomy improves the cell engraftment and murine hepatic tissue regeneration, thereby confirming that ADHLSCs could be a promising cell source for liver cell therapy and hepatic tissue repair.
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42
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Moris D, Vernadakis S, Papalampros A, Vailas M, Dimitrokallis N, Petrou A, Dimitroulis D. Mechanistic insights of rapid liver regeneration after associating liver partition and portal vein ligation for stage hepatectomy. World J Gastroenterol 2016; 22:7613-7624. [PMID: 27672282 PMCID: PMC5011675 DOI: 10.3748/wjg.v22.i33.7613] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Revised: 06/09/2016] [Accepted: 07/06/2016] [Indexed: 02/06/2023] Open
Abstract
AIM To highlight the potential mechanisms of regeneration in the Associating Liver Partition and Portal vein ligation for Stage hepatectomy models (clinical and experimental) that could unlock the myth behind the extraordinary capability of the liver for regeneration, which would help in designing new therapeutic options for the regenerative drive in difficult setup, such as chronic liver diseases. Associating Liver Partition and Portal vein ligation for Stage hepatectomy has been recently advocated to induce rapid future liver remnant hypertrophy that significantly shortens the time for the second stage hepatectomy. The introduction of Associating Liver Partition and Portal vein ligation for Stage hepatectomy in the surgical armamentarium of therapeutic tools for liver surgeons represented a real breakthrough in the history of liver surgery.
METHODS A comprehensive literature review of Associating Liver Partition and Portal vein ligation for Stage hepatectomy and its utility in liver regeneration is performed.
RESULTS Liver regeneration after Associating Liver Partition and Portal vein ligation for Stage hepatectomy is a combination of portal flow changes and parenchymal transection that generate a systematic response inducing hepatocyte proliferation and remodeling.
CONCLUSION Associating Liver Partition and Portal vein ligation for Stage hepatectomy represents a real breakthrough in the history of liver surgery because it offers rapid liver regeneration potential that facilitate resection of liver tumors that were previously though unresectable. The jury is still out though in terms of safety, efficacy and oncological outcomes. As far as Associating Liver Partition and Portal vein ligation for Stage hepatectomy -induced liver regeneration is concerned, further research on the field should focus on the role of non-parenchymal cells in liver regeneration as well as on the effect of Associating Liver Partition and Portal vein ligation for Stage hepatectomy in liver regeneration in the setup of parenchymal liver disease.
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43
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Kopp JL, Grompe M, Sander M. Stem cells versus plasticity in liver and pancreas regeneration. Nat Cell Biol 2016; 18:238-45. [PMID: 26911907 DOI: 10.1038/ncb3309] [Citation(s) in RCA: 177] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cell replacement in adult organs can be achieved through stem cell differentiation or the replication or transdifferentiation of existing cells. In the adult liver and pancreas, stem cells have been proposed to replace tissue cells, particularly following injury. Here we review how specialized cell types are produced in the adult liver and pancreas. Based on current evidence, we propose that the plasticity of differentiated cells, rather than stem cells, accounts for tissue repair in both organs.
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Affiliation(s)
- Janel L Kopp
- Department of Cellular and Physiological Sciences, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
| | - Markus Grompe
- Oregon Stem Cell Center, Papé Family Pediatric Research Institute, Oregon Health and Science University, Portland, Oregon 97239, USA
| | - Maike Sander
- Department of Pediatrics and Cellular and Molecular Medicine, Pediatric Diabetes Research Center, Sanford Consortium for Regenerative Medicine, University of California, San Diego, La Jolla, California 92093-0695, USA
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44
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Upregulation of hydroxysteroid sulfotransferase 2B1b promotes hepatic oval cell proliferation by modulating oxysterol-induced LXR activation in a mouse model of liver injury. Arch Toxicol 2016; 91:271-287. [PMID: 27052460 DOI: 10.1007/s00204-016-1693-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 03/21/2016] [Indexed: 02/07/2023]
Abstract
Hydroxysteroid sulfotransferase 2B1b (SULT2B1b) sulfates cholesterol and oxysterols. Hepatic oval cells (HOCs), thought to be progenitor cells, can be triggered in chemically injured livers. The present study focused on the role of SULT2B1b in HOC proliferation after liver injury. Our experiments revealed that the expression of SULT2B1b was increased dramatically in a chemical-induced liver injury model, mainly in HOCs. Upon challenge with a hepatotoxic diet containing 0.1 % 3,5-diethoxycarbonyl-1,4-dihydrocollidine (DDC), SULT2B1-/- mice presented alleviated liver injury and less HOC proliferation compared with wild-type (WT) mice, and these findings were verified by serum analysis, histopathology, immunofluorescence staining, RNA-seq, and Western blotting. HOCs derived from SULT2B1-/- mice showed lower proliferative capability than those from WT mice. SULT2B1b overexpression promoted growth of the WB-F344 hepatic oval cell line, whereas SULT2B1b knockdown inhibited growth of these cells. The IL-6/STAT3 signaling pathway also was promoted by SULT2B1b. Liquid chromatography and mass spectrometry indicated that the levels of 22-hydroxycholesterol, 25-hydroxycholesterol, and 24,25-epoxycholesterol were higher in the DDC-injured livers of SULT2B1-/- mice than in livers of WT mice. The above oxysterols are physiological ligands of liver X receptors (LXRs), and SULT2B1b suppressed oxysterol-induced LXR activation. Additional in vivo and in vitro experiments demonstrated that LXR activation could inhibit HOC proliferation and the IL-6/STAT3 signaling pathway, and these effects could be reversed by SULT2B1b. Our data indicate that upregulation of SULT2B1b might promote HOC proliferation and aggravate liver injury via the suppression of oxysterol-induced LXR activation in chemically induced mouse liver injury.
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Sasturkar SV, David P, Sharma S, Sarin SK, Trehanpati N, Pamecha V. Serial changes of cytokines and growth factors in peripheral circulation after right lobe donor hepatectomy. Liver Transpl 2016; 22:344-51. [PMID: 26600439 DOI: 10.1002/lt.24373] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 10/29/2015] [Accepted: 11/03/2015] [Indexed: 12/28/2022]
Abstract
Cytokines and growth factors have prominent roles in liver regeneration. The aim of this study was to evaluate the biological markers of liver regeneration in healthy donors undergoing right lobe donor hepatectomy for living donor liver transplantation. Twenty-five voluntary liver donors were enrolled. Peripheral blood samples were taken a day before the operation and on postoperative days (PODs) 1, 3, 7, 14, and 42. Levels of hepatocyte growth factor (HGF), interleukin (IL) 6, tumor necrosis factor α (TNF-α), thrombopoietin (TPO), transforming growth factor β1 (TGF-β1), interferon (IFN) α, and IFNγ were monitored. The remnant liver volume (RLV) before surgery and regeneration liver volume (RgV) on POD 14 were calculated on computed tomography (CT). RgV/RLV ratio was correlated with the remnant-liver-volume-to-body-weight ratio (RLVBWR). Inverse correlation was observed between RgV/RLV and RLVBWR (r(2) = 0.61; P < 0.001). There was a significant rise of HGF on POD 1 (P = 0.001), POD 7 (P = 0.049), and POD 14 (P = 0.04). TNF-α was elevated on POD 1 (P = 0.004). The levels of IL 6 (P < 0.001) and TPO (P < 0.001) were higher from POD 1 to POD 42. IFNα was higher on POD 14 (P = 0.003) and POD 42 (P = 0.001). There was a significant fall of IFNγ on POD 1 (P = 0.01) and increase on POD 14 (P = 0.04). The levels of TGF-β1 were higher on POD 14 (P = 0.008) and on POD 42 (P = 0.002). In conclusion, HGF, IL 6, TNF-α, and TPO are involved in the early phase, whereas TGF-β1 and IFN are involved in the termination phase of liver regeneration. Liver regeneration was observed to be higher in donors with low RLVBWR.
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Affiliation(s)
| | - Paul David
- Department of Research, Institute of Liver and Biliary Sciences, New Delhi, India
| | - Shreya Sharma
- Department of Research, Institute of Liver and Biliary Sciences, New Delhi, India
| | - Shiv Kumar Sarin
- Department of Hepatology, Institute of Liver and Biliary Sciences, New Delhi, India
| | - Nirupama Trehanpati
- Department of Research, Institute of Liver and Biliary Sciences, New Delhi, India
| | - Viniyendra Pamecha
- Departments of Liver Transplantation and Hepato-Pancreato-Biliary Surgery, New Delhi, India
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Lai SS, Zhao DD, Cao P, Lu K, Luo OY, Chen WB, Liu J, Jiang EZ, Yu ZH, Lee G, Li J, Yu DC, Xu XJ, Zhu MS, Gao X, Li CJ, Xue B. PP2Acα positively regulates the termination of liver regeneration in mice through the AKT/GSK3β/Cyclin D1 pathway. J Hepatol 2016; 64:352-360. [PMID: 26456844 DOI: 10.1016/j.jhep.2015.09.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 09/17/2015] [Accepted: 09/25/2015] [Indexed: 02/09/2023]
Abstract
BACKGROUND & AIMS Liver injury triggers a highly organized and ordered liver regeneration (LR) process. Once regeneration is complete, a stop signal ensures that the regenerated liver is an appropriate functional size. The inhibitors and stop signals that regulate LR are unknown, and only limited information is available about these mechanisms. METHODS A 70% partial hepatectomy (PH) was performed in hepatocyte-specific PP2Acα-deleted (PP2Acα(-/-)) and control (PP2Acα(+/+)) mice. LR was estimated by liver weight, serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels and cell proliferation, and the related cellular signals were analyzed. RESULTS We found that the catalytic subunit of PP2A was markedly upregulated during the late stage of LR. PP2Acα(-/-) mice showed prolonged LR termination, an increased liver size compared to the original mass and lower levels of serum ALT and AST compared with control mice. In these mice, cyclin D1 protein levels, but not mRNA levels, were increased. Mechanistically, AKT activated by the loss of PP2Acα inhibited glycogen synthase kinase 3β (GSK3β) activity, which led to the accumulation of cyclin D1 protein and accelerated hepatocyte proliferation at the termination stage. Treatment with the PI3K inhibitor wortmannin at the termination stage was sufficient to inhibit cyclin D1 accumulation and hepatocyte proliferation. CONCLUSIONS PP2Acα plays an essential role in the proper termination of LR via the AKT/GSK3β/Cyclin D1 pathway. Our findings enrich the understanding of the molecular mechanism that controls the termination of LR and provides a potential therapeutic target for treating liver injury.
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Affiliation(s)
- Shan-Shan Lai
- State Key Laboratory of Pharmaceutical Biotechnology and Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center and School of Medicine, Nanjing University, Nanjing 210093, China
| | - Dan-Dan Zhao
- State Key Laboratory of Pharmaceutical Biotechnology and Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center and School of Medicine, Nanjing University, Nanjing 210093, China
| | - Peng Cao
- Jiangsu Province Hospital on Integration of Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210028, China; Laboratory of Cellular and Molecular Biology, Jiangsu Province Institute of Chinese Medicine, Nanjing 210028, China
| | - Ke Lu
- State Key Laboratory of Pharmaceutical Biotechnology and Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center and School of Medicine, Nanjing University, Nanjing 210093, China
| | - Ou-Yang Luo
- State Key Laboratory of Pharmaceutical Biotechnology and Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center and School of Medicine, Nanjing University, Nanjing 210093, China
| | - Wei-Bo Chen
- State Key Laboratory of Pharmaceutical Biotechnology and Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center and School of Medicine, Nanjing University, Nanjing 210093, China; Department of Hepatobiliary Surgery, The Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210093, China
| | - Jia Liu
- State Key Laboratory of Pharmaceutical Biotechnology and Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center and School of Medicine, Nanjing University, Nanjing 210093, China
| | - En-Ze Jiang
- State Key Laboratory of Pharmaceutical Biotechnology and Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center and School of Medicine, Nanjing University, Nanjing 210093, China
| | - Zi-Han Yu
- State Key Laboratory of Pharmaceutical Biotechnology and Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center and School of Medicine, Nanjing University, Nanjing 210093, China
| | - Gina Lee
- Department of Cell Biology, Harvard Medical School, 240 Longwood Avenue, Boston, MA 02115, USA
| | - Jing Li
- Department of Cell Biology, Harvard Medical School, 240 Longwood Avenue, Boston, MA 02115, USA
| | - De-Cai Yu
- Department of Hepatobiliary Surgery, The Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210093, China
| | - Xiao-Jun Xu
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Min-Sheng Zhu
- State Key Laboratory of Pharmaceutical Biotechnology and Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center and School of Medicine, Nanjing University, Nanjing 210093, China
| | - Xiang Gao
- State Key Laboratory of Pharmaceutical Biotechnology and Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center and School of Medicine, Nanjing University, Nanjing 210093, China.
| | - Chao-Jun Li
- State Key Laboratory of Pharmaceutical Biotechnology and Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center and School of Medicine, Nanjing University, Nanjing 210093, China.
| | - Bin Xue
- State Key Laboratory of Pharmaceutical Biotechnology and Jiangsu Key Laboratory of Molecular Medicine, Model Animal Research Center and School of Medicine, Nanjing University, Nanjing 210093, China.
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Abstract
Liver regeneration after partial hepatectomy is an extremely complicated pathophysiologic process, which involves the up-regulation of many proliferation associated proteins and genes. The molecular mechanisms responsible for initiating, maintaining, and terminating this process are still under active investigation and remain one of the research focuses in the field of regenerative medicine. Studies of the mechanism of liver regeneration can provide a theoretical foundation for regeneration promotion and hepatic failure prevention, which is extremely important in clinical practice. This review aims to elucidate the molecular mechanism responsible for the initiation, proliferation and termination of liver regeneration.
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Huang J, Schriefer AE, Cliften PF, Dietzen D, Kulkarni S, Sing S, Monga SPS, Rudnick DA. Postponing the Hypoglycemic Response to Partial Hepatectomy Delays Mouse Liver Regeneration. THE AMERICAN JOURNAL OF PATHOLOGY 2016; 186:587-99. [PMID: 26772417 DOI: 10.1016/j.ajpath.2015.10.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 10/19/2015] [Accepted: 10/27/2015] [Indexed: 12/13/2022]
Abstract
All serious liver injuries alter metabolism and initiate hepatic regeneration. Recent studies using partial hepatectomy (PH) and other experimental models of liver regeneration implicate the metabolic response to hepatic insufficiency as an important source of signals that promote regeneration. Based on these considerations, the analyses reported here were undertaken to assess the impact of interrupting the hypoglycemic response to PH on liver regeneration in mice. A regimen of parenteral dextrose infusion that delays PH-induced hypoglycemia for 14 hours after surgery was identified, and the hepatic regenerative response to PH was compared between dextrose-treated and control mice. The results showed that regenerative recovery of the liver was postponed in dextrose-infused mice (versus vehicle control) by an interval of time comparable to the delay in onset of PH-induced hypoglycemia. The regulation of specific liver regeneration-promoting signals, including hepatic induction of cyclin D1 and S-phase kinase-associated protein 2 expression and suppression of peroxisome proliferator-activated receptor γ and p27 expression, was also disrupted by dextrose infusion. These data support the hypothesis that alterations in metabolism that occur in response to hepatic insufficiency promote liver regeneration, and they define specific pro- and antiregenerative molecular targets whose regenerative regulation is postponed when PH-induced hypoglycemia is delayed.
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Affiliation(s)
- Jiansheng Huang
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
| | - Andrew E Schriefer
- Department of Genetics, Washington University School of Medicine, St. Louis, Missouri
| | - Paul F Cliften
- Department of Genetics, Washington University School of Medicine, St. Louis, Missouri
| | - Dennis Dietzen
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
| | - Sakil Kulkarni
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
| | - Sucha Sing
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Satdarshan P S Monga
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - David A Rudnick
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri; Department of Developmental Biology, Washington University School of Medicine, St. Louis, Missouri.
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Masuzaki R, Zhao S, Valerius MT, Tsugawa D, Oya Y, Ray KC, Karp SJ. SOCS2 Balances Metabolic and Restorative Requirements during Liver Regeneration. J Biol Chem 2015; 291:3346-58. [PMID: 26703468 DOI: 10.1074/jbc.m115.703264] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Indexed: 01/01/2023] Open
Abstract
After significant injury, the liver must maintain homeostasis during the regenerative process. We hypothesized the existence of mechanisms to limit hepatocyte proliferation after injury to maintain metabolic and synthetic function. A screen for candidates revealed suppressor of cytokine signaling 2 (SOCS2), an inhibitor of growth hormone (GH) signaling, was strongly induced after partial hepatectomy. Using genetic deletion and administration of various factors we investigated the role of SOCS2 during liver regeneration. SOCS2 preserves liver function by restraining the first round of hepatocyte proliferation after partial hepatectomy by preventing increases in growth hormone receptor (GHR) via ubiquitination, suppressing GH pathway activity. At later times, SOCS2 enhances hepatocyte proliferation by modulating a decrease in serum insulin-like growth factor 1 (IGF-1) that allows GH release from the pituitary. SOCS2, therefore, plays a dual role in modulating the rate of hepatocyte proliferation. In particular, this is the first demonstration of an endogenous mechanism to limit hepatocyte proliferation after injury.
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Affiliation(s)
- Ryota Masuzaki
- From the Transplant Center, Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Sophia Zhao
- Department of Genetics, Harvard Medical School, Boston, Massachusetts 02115
| | - M Todd Valerius
- Renal Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, and Harvard Stem Cell Institute, Harvard University, Cambridge, Massachusetts 02138
| | - Daisuke Tsugawa
- From the Transplant Center, Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Yuki Oya
- From the Transplant Center, Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Kevin C Ray
- From the Transplant Center, Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Seth J Karp
- From the Transplant Center, Department of Surgery, Vanderbilt University Medical Center, Nashville, Tennessee 37232,
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50
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Feng G, Long Y, Peng J, Li Q, Cui Z. Transcriptomic characterization of the dorsal lobes after hepatectomy of the ventral lobe in zebrafish. BMC Genomics 2015; 16:979. [PMID: 26584608 PMCID: PMC4653908 DOI: 10.1186/s12864-015-2145-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 10/26/2015] [Indexed: 02/08/2023] Open
Abstract
Background The liver possesses an ability of compensatory growth after removing three of five lobes in mammals or one of three lobes in zebrafish. The reenter of hepatocytes into the cell cycle is one of the hallmarks for the initiation of liver compensatory growth, but cellular and molecular mechanisms underlying the activation of hepatocytes remain largely unknown. Results To better understand the process, transcriptional profiles of the remaining liver dorsal lobes in female zebrafish were generated with RNA-seq. About 44 million raw reads were obtained from three sequencing libraries and 71 % of raw reads were mapped to the reference genome of zebrafish. A total number of 5652 genes were differentially expressed in at least one of two time points during the compensatory growth of liver dorsal lobes and classified into different functional categories. A number of genes encoding angiogenesis-related growth factors/ligands and apoptosis-associated cytokines were strongly expressed at 6-h time point after the removal of the ventral lobe. Gene ontology enrichment analysis of genes up-regulated during early stages of liver compensatory growth revealed that small GTPase-mediated signal transduction, RNA processing and intracellular protein transport were the most highly overrepresented biological processes and SNARE interactions in vesicular transport, proteasome and basal transcription factors were the most highly enriched pathways. Moreover, 477 genes differently expressed during liver compensatory growth of both female zebrafish and mice were involved in the response to stimulus, DNA replication, metabolic processes of fatty acid, lipid and steroid, multicellular organismal homeostasis and extracellular matrix constituent secretion. Conclusions Multiple biological processes and signaling pathways are immediately activated in remaining dorsal lobes of female zebrafish right after removal of the ventral lobe and these findings provide crucial clues for further identification of cis-elements and trans-factors that are extensively involved in the initiation of liver compensatory growth. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-2145-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Guohui Feng
- The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, Hubei, China. .,University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Yong Long
- The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, Hubei, China.
| | - Jinrong Peng
- Zhejiang University, Hangzhou, 310058, Zhejiang, China.
| | - Qing Li
- The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, Hubei, China.
| | - Zongbin Cui
- The Key Laboratory of Aquatic Biodiversity and Conservation of Chinese Academy of Sciences, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, Hubei, China.
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