1
|
Iqbal A, Van Hul N, Belicova L, Corbat AA, Hankeova S, Andersson ER. Spatially segregated defects and IGF1-responsiveness of hilar and peripheral biliary organoids from a model of Alagille syndrome. Liver Int 2024; 44:541-558. [PMID: 38014627 DOI: 10.1111/liv.15789] [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: 04/07/2023] [Revised: 11/02/2023] [Accepted: 11/03/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND & AIMS Alagille syndrome (ALGS) manifests with peripheral intrahepatic bile duct (IHBD) paucity, which can spontaneously resolve. In a model for ALGS, Jag1Ndr/Ndr mice, this occurs with distinct architectural mechanisms in hilar and peripheral IHBDs. Here, we investigated region-specific IHBD characteristics and addressed whether IGF1, a cholangiocyte mitogen that is downregulated in ALGS and in Jag1Ndr/Ndr mice, can improve biliary outcomes. METHODS Intrahepatic cholangiocyte organoids (ICOs) were derived from hilar and peripheral adult Jag1+/+ and Jag1Ndr/Ndr livers (hICOs and pICOs, respectively). ICOs were grown in Matrigel or microwell arrays, and characterized using bulk RNA sequencing, immunofluorescence, and high throughput analyses of nuclear sizes. ICOs were treated with IGF1, followed by analyses of growth, proliferation, and death. CellProfiler and Python scripts were custom written for image analyses. Key results were validated in vivo by immunostaining. RESULTS Cell growth assays and transcriptomics demonstrated that Jag1Ndr/Ndr ICOs were less proliferative than Jag1+/+ ICOs. IGF1 specifically rescued survival and growth of Jag1Ndr/Ndr pICOs. Jag1Ndr/Ndr hICOs were the least proliferative, with lower Notch signalling and an enrichment of hepatocyte signatures and IGF uptake/transport pathways. In vitro (Jag1Ndr/Ndr hICOs) and in vivo (Jag1Ndr/Ndr hilar portal tracts) analyses revealed ectopic HNF4a+ hepatocytes. CONCLUSIONS Hilar and peripheral Jag1Ndr/Ndr ICOs exhibit differences in Notch signalling status, proliferation, and cholangiocyte commitment which may result in cholangiocyte-to-hepatocyte transdifferentiation. While Jag1Ndr/Ndr pICOs can be rescued by IGF1, hICOs are unresponsive, perhaps due to their hepatocyte-like state and/or expression of IGF transport components. IGF1 represents a potential therapeutic for peripheral bile ducts.
Collapse
Affiliation(s)
- Afshan Iqbal
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Noemi Van Hul
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Lenka Belicova
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Agustin A Corbat
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Simona Hankeova
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Emma R Andersson
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| |
Collapse
|
2
|
Zhang C, Sun C, Zhao Y, Ye B, Yu G. Signaling pathways of liver regeneration: Biological mechanisms and implications. iScience 2024; 27:108683. [PMID: 38155779 PMCID: PMC10753089 DOI: 10.1016/j.isci.2023.108683] [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] [Indexed: 12/30/2023] Open
Abstract
The liver possesses a unique regenerative ability to restore its original mass, in this regard, partial hepatectomy (PHx) and partial liver transplantation (PLTx) can be executed smoothly and safely, which has important implications for the treatment of liver disease. Liver regeneration (LR) can be the very complicated procedure that involves multiple cytokines and transcription factors that interact with each other to activate different signaling pathways. Activation of these pathways can drive the LR process, which can be divided into three stages, namely, the initiation, progression, and termination stages. Therefore, it is important to investigate the pathways involved in LR to elucidate the mechanism of LR. This study reviews the latest research on the key signaling pathways in the different stages of LR.
Collapse
Affiliation(s)
- Chunyan Zhang
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Pulmonary Fibrosis, College of Life Science, Institute of Biomedical Science, Henan Normal University, Xinxiang, Henan, China
| | - Caifang Sun
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Pulmonary Fibrosis, College of Life Science, Institute of Biomedical Science, Henan Normal University, Xinxiang, Henan, China
| | - Yabin Zhao
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Pulmonary Fibrosis, College of Life Science, Institute of Biomedical Science, Henan Normal University, Xinxiang, Henan, China
| | - Bingyu Ye
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Pulmonary Fibrosis, College of Life Science, Institute of Biomedical Science, Henan Normal University, Xinxiang, Henan, China
| | - GuoYing Yu
- State Key Laboratory Cell Differentiation and Regulation, Henan International Joint Laboratory of Pulmonary Fibrosis, Henan Center for Outstanding Overseas Scientists of Pulmonary Fibrosis, College of Life Science, Institute of Biomedical Science, Henan Normal University, Xinxiang, Henan, China
| |
Collapse
|
3
|
Kasturi M, Mathur V, Gadre M, Srinivasan V, Vasanthan KS. Three Dimensional Bioprinting for Hepatic Tissue Engineering: From In Vitro Models to Clinical Applications. Tissue Eng Regen Med 2024; 21:21-52. [PMID: 37882981 PMCID: PMC10764711 DOI: 10.1007/s13770-023-00576-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 07/07/2023] [Accepted: 07/11/2023] [Indexed: 10/27/2023] Open
Abstract
Fabrication of functional organs is the holy grail of tissue engineering and the possibilities of repairing a partial or complete liver to treat chronic liver disorders are discussed in this review. Liver is the largest gland in the human body and plays a responsible role in majority of metabolic function and processes. Chronic liver disease is one of the leading causes of death globally and the current treatment strategy of organ transplantation holds its own demerits. Hence there is a need to develop an in vitro liver model that mimics the native microenvironment. The developed model should be a reliable to understand the pathogenesis, screen drugs and assist to repair and replace the damaged liver. The three-dimensional bioprinting is a promising technology that recreates in vivo alike in vitro model for transplantation, which is the goal of tissue engineers. The technology has great potential due to its precise control and its ability to homogeneously distribute cells on all layers in a complex structure. This review gives an overview of liver tissue engineering with a special focus on 3D bioprinting and bioinks for liver disease modelling and drug screening.
Collapse
Affiliation(s)
- Meghana Kasturi
- Manipal Centre for Biotherapeutics Research, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Vidhi Mathur
- Manipal Centre for Biotherapeutics Research, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Mrunmayi Gadre
- Manipal Centre for Biotherapeutics Research, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Varadharajan Srinivasan
- Department of Civil Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India
| | - Kirthanashri S Vasanthan
- Manipal Centre for Biotherapeutics Research, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
| |
Collapse
|
4
|
Radwan SM, Abdel-Latif GA, Abbas SS, Elmongy NF, Wasfey EF. The beneficial effects of l-carnitine and infliximab in methotrexate-induced hepatotoxicity: Emphasis on Notch1/Hes-1 signaling. Arch Pharm (Weinheim) 2023; 356:e2300312. [PMID: 37625018 DOI: 10.1002/ardp.202300312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 08/13/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023]
Abstract
Methotrexate (MTX)-induced hepatotoxicity is a serious adverse effect that may limit its use. Therefore, eligible drugs to ameliorate MTX-induced hepatotoxicity are required. l-Carnitine (LC) is a natural molecule with beneficial metabolic effects and infliximab (INF) is an anti-inflammatory monoclonal antibody against tumor necrosis factor-alpha (TNF-α). Recently, Notch1/Hes-1 signaling was found to play a key role in the pathogenesis of liver injury. However, its role in MTX-induced hepatotoxicity is unclear. This study aimed to evaluate the modulatory effects of LC or INF on MTX-induced hepatotoxicity and to explore the underlying mechanism with emphasis on the Notch1/Hes-1 signaling pathway. Sixty rats were randomized into six groups (n = 10): (1) control (saline); (2) MTX (20 mg/kg MTX, intraperitoneal [ip], once); (3) LC group (500 mg/kg ip, 5 days); (4) INF (7 mg/kg INF ip, once); (5) MTX+LC (20 mg/kg ip, once, 500 mg/kg ip, 5 days, respectively); (6) MTX+INF (20 mg/kg ip, once, 7 mg/kg INF ip, once, respectively). Oxidative stress, inflammatory markers, and Notch1/Hes-1 were investigated. MTX induced the expression of Notch1 and Hes-1 proteins and increased the levels of TNF-α, interleukin (IL)-6, and IL-1β in the liver. Cotreatment with LC or INF showed apparent antioxidant and anti-inflammatory effects. Interestingly, the downregulation of Notch1 and Hes-1 expression was more prominent in LC cotreatment as compared with INF. In conclusion, LC or INF attenuates MTX-induced hepatotoxicity through modulation of Notch1/Hes-1 signaling. The LC ameliorative effect against MTX-induced hepatotoxicity is significantly better than that of INF. Therefore, LC cotreatment may present a safe and therapeutically effective therapy in alleviating MTX-induced hepatotoxicity.
Collapse
Affiliation(s)
- Sara M Radwan
- Biochemistry Department, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | - Ghada A Abdel-Latif
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Misr International University (MIU), Cairo, Egypt
- Translational and Clinical Research Unit, Faculty of Pharmacy, Misr International University (MIU), Cairo, Egypt
| | - Samah S Abbas
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Misr International University (MIU), Cairo, Egypt
- Translational and Clinical Research Unit, Faculty of Pharmacy, Misr International University (MIU), Cairo, Egypt
| | - Noura F Elmongy
- Physiology Department, Faculty of Medicine, Al-Azhar University, Damietta, Egypt
| | - Eman F Wasfey
- Biochemistry Department, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| |
Collapse
|
5
|
Maspero M, Yilmaz S, Cazzaniga B, Raj R, Ali K, Mazzaferro V, Schlegel A. The role of ischaemia-reperfusion injury and liver regeneration in hepatic tumour recurrence. JHEP Rep 2023; 5:100846. [PMID: 37771368 PMCID: PMC10523008 DOI: 10.1016/j.jhepr.2023.100846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 06/20/2023] [Accepted: 07/01/2023] [Indexed: 09/30/2023] Open
Abstract
The risk of cancer recurrence after liver surgery mainly depends on tumour biology, but preclinical and clinical evidence suggests that the degree of perioperative liver injury plays a role in creating a favourable microenvironment for tumour cell engraftment or proliferation of dormant micro-metastases. Understanding the contribution of perioperative liver injury to tumour recurrence is imperative, as these pathways are potentially actionable. In this review, we examine the key mechanisms of perioperative liver injury, which comprise mechanical handling and surgical stress, ischaemia-reperfusion injury, and parenchymal loss leading to liver regeneration. We explore how these processes can trigger downstream cascades leading to the activation of the immune system and the pro-inflammatory response, cellular proliferation, angiogenesis, anti-apoptotic signals, and release of circulating tumour cells. Finally, we discuss the novel therapies under investigation to decrease ischaemia-reperfusion injury and increase regeneration after liver surgery, including pharmaceutical agents, inflow modulation, and machine perfusion.
Collapse
Affiliation(s)
- Marianna Maspero
- Transplantation Center, Digestive Disease and Surgery Institute, Cleveland Clinic, Cleveland, OH, USA
- General Surgery and Liver Transplantation Unit, IRCCS Istituto Tumori, Milan, Italy
| | - Sumeyye Yilmaz
- Transplantation Center, Digestive Disease and Surgery Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Beatrice Cazzaniga
- Transplantation Center, Digestive Disease and Surgery Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Roma Raj
- Transplantation Center, Digestive Disease and Surgery Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Khaled Ali
- Transplantation Center, Digestive Disease and Surgery Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Vincenzo Mazzaferro
- General Surgery and Liver Transplantation Unit, IRCCS Istituto Tumori, Milan, Italy
- Department of Oncology and Hemato-Oncology, University of Milan, Italy
| | - Andrea Schlegel
- Transplantation Center, Digestive Disease and Surgery Institute, Cleveland Clinic, Cleveland, OH, USA
- Department of Immunology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| |
Collapse
|
6
|
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: 5] [Impact Index Per Article: 5.0] [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.
Collapse
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
| |
Collapse
|
7
|
Zou G, Park JI. Wnt signaling in liver regeneration, disease, and cancer. Clin Mol Hepatol 2023; 29:33-50. [PMID: 35785913 PMCID: PMC9845677 DOI: 10.3350/cmh.2022.0058] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 06/30/2022] [Indexed: 02/02/2023] Open
Abstract
The liver exhibits the highest recovery rate from acute injuries. However, in chronic liver disease, the long-term loss of hepatocytes often leads to adverse consequences such as fibrosis, cirrhosis, and liver cancer. The Wnt signaling plays a pivotal role in both liver regeneration and tumorigenesis. Therefore, manipulating the Wnt signaling has become an attractive approach to treating liver disease, including cancer. Nonetheless, given the crucial roles of Wnt signaling in physiological processes, blocking Wnt signaling can also cause several adverse effects. Recent studies have identified cancer-specific regulators of Wnt signaling, which would overcome the limitation of Wnt signaling target approaches. In this review, we discussed the role of Wnt signaling in liver regeneration, precancerous lesion, and liver cancer. Furthermore, we summarized the basic and clinical approaches of Wnt signaling blockade and proposed the therapeutic prospects of cancer-specific Wnt signaling blockade for liver cancer treatment.
Collapse
Affiliation(s)
- Gengyi Zou
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA,Corresponding author : Gengyi Zou Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, 6565 MD Anderson Blvd Unit 1054, Houston, TX 77030, USA Tel: +1-713-792-3659, Fax: +1-713-794-5369, E-mail:
| | - Jae-Il Park
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA,Genetics and Epigenetics Program, The University of Texas MD Anderson Cancer Center Graduate School of Biomedical Sciences, Houston, TX, USA,Jae-Il Park Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, 6565 MD Anderson Blvd. Unit 1052, Houston, TX 77030, USA Tel: +1-713-792-3659, Fax: +1-713-794-5369, E-mail:
| |
Collapse
|
8
|
Chen Y, Shi S, Li B, Lan T, Yuan K, Yuan J, Zhou Y, Song J, Lv T, Shi Y, Xiang B, Tian T, Zhang T, Yang J, Lin Y. Therapeutic Effects of Self-Assembled Tetrahedral Framework Nucleic Acids on Liver Regeneration in Acute Liver Failure. ACS APPLIED MATERIALS & INTERFACES 2022; 14:13136-13146. [PMID: 35285610 DOI: 10.1021/acsami.2c02523] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Liver failure is a serious disease that is characterized by global hepatocyte necrosis. Hepatocyte proliferation and liver regeneration are critically important for the success of treatments for liver disease. Tetrahedral framework nucleic acids (TFNAs), which are widely used antioxidants and anti-inflammatory nanomaterials, activate multiple proliferation and prosurvival pathways. Therefore, the effects of a TFNA on hepatocyte proliferation and liver regeneration in mouse livers injured by 70% partial hepatectomy (PHx), acetaminophen overdose, and carbon tetrachloride were explored in this study. The TFNA, which was successfully self-assembled from four specifically designed ssDNAs, entered the body quickly and was taken up effectively by hepatocytes in the liver and could eventually be cleared by the kidneys. The TFNA promoted hepatocyte proliferation in vitro by activating the Notch and Wnt signaling pathways. In the three in vivo mouse models of liver injury, the TFNA attenuated the injuries and enhanced liver regeneration by regulating the cell cycle and the P53 signaling pathway. Therefore, by promoting hepatocyte proliferation and enhancing liver regeneration, the TFNA shows potential as an effective therapeutic agent for treating acute liver injury induced by 70% PHx and other factors, thereby preventing the progression to acute liver failure and reducing the associated mortality rate.
Collapse
Affiliation(s)
- Yang Chen
- Department of Liver Surgery& Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China.,Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China.,Laboratory of Liver Transplantation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China
| | - Sirong Shi
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Bo Li
- Department of Liver Surgery& Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China.,Laboratory of Liver Transplantation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China
| | - Tian Lan
- Department of Liver Surgery& Liver Transplantation Center, Laboratory of Liver Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China
| | - Kefei Yuan
- Department of Liver Surgery& Liver Transplantation Center, Laboratory of Liver Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China
| | - Jingsheng Yuan
- Department of Liver Surgery& Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China.,Laboratory of Liver Transplantation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China
| | - Yongjie Zhou
- Laboratory of Liver Transplantation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China.,Laboratory of Pathology, Key Laboratory of Transplant Engineering, and Immunology, NHC, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jiulin Song
- Department of Liver Surgery& Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China.,Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China.,Laboratory of Liver Transplantation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China
| | - Tao Lv
- Department of Liver Surgery& Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China.,Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China.,Laboratory of Liver Transplantation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China
| | - Yujun Shi
- Laboratory of Liver Transplantation, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China.,Laboratory of Pathology, Key Laboratory of Transplant Engineering, and Immunology, NHC, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Bo Xiang
- Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China
| | - Taoran Tian
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Tao Zhang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jiayin Yang
- Department of Liver Surgery& Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, China
| | - Yunfeng Lin
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| |
Collapse
|
9
|
Two distinct Notch signals, Delta-like 4/Notch1 and Jagged-1/Notch2, antagonistically regulate chemical hepatocarcinogenesis in mice. Commun Biol 2022; 5:85. [PMID: 35064244 PMCID: PMC8782997 DOI: 10.1038/s42003-022-03013-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 12/27/2021] [Indexed: 12/23/2022] Open
Abstract
Notch signaling is one of the most common drivers of carcinogenesis in many types of cancers, including hepatocellular carcinoma (HCC); however, it occasionally suppresses tumor progression. Moreover, it is virtually unknown how different sets of Notch ligands and receptors regulate the HCC development. In this study, we demonstrate that the expression of the Notch ligands, Delta-like 4 (Dll4) and Jagged-1 (Jag1), is upregulated during diethylnitrosamine-induced hepatocarcinogenesis. Dll4 is detected in the preneoplastic hepatocytes and HCC cells, but not in the normal hepatocytes, while Jag1 is expressed in the desmin-positive mesenchymal cells. Hepatocyte-specific Dll4 knockout abolishes the Notch1 signaling and suppresses the tumor progression. In contrast, Jag1 deletion induces the ectopic expression of Dll4 in hepatocytes along with the loss of Notch2 signaling, leading to the tumor progression. These results indicate that the two distinct Notch signals, Dll4/Notch1 and Jag1/Notch2, are antagonistic to each other, exerting opposite effects on HCC progression. Dll4/Notch1 signal promotes the progression of HCC, while Jag1/Notch2 signal antagonistically suppresses it in murine chemical hepatocarcinogenesis. Nakano et al. report that two distinct Notch signals regulate the progression of hepatocellular carcinoma (HCC) using tissue specific loss of function mouse mutants. They find Dll4/Notch1 signal promotes HCC progression, while the Jag1/Notch2 signal antagonistically suppresses it.
Collapse
|
10
|
Huang W, Han N, Du L, Wang M, Chen L, Tang H. A narrative review of liver regeneration-from models to molecular basis. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1705. [PMID: 34988214 PMCID: PMC8667151 DOI: 10.21037/atm-21-5234] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 11/04/2021] [Indexed: 12/11/2022]
Abstract
Objective To elucidate the characteristics of different liver regeneration animal models, understand the activation signals and mechanisms related to liver regeneration, and obtain a more comprehensive conception of the entire liver regeneration process. Background Liver regeneration is one of the most enigmatic and fascinating phenomena of the human organism. Despite suffering significant injuries, the liver still can continue to perform its complex functions through the regeneration system. Although advanced topics on liver regeneration have been proposed; unfortunately, complete regeneration of the liver has not been achieved until now. Therefore, increasing understanding of the liver regenerative process can help improve our treatment of liver failure. It will provide a new sight for the treatment of patients with liver injury in the clinic. Methods Literatures on liver regeneration animal models and involved basic research on molecular mechanisms were retrieved to analyze the characteristics of different models and those related to molecular basis. Conclusions The process of liver regeneration is complex and intricate, consisting of various and interactive pathways. There is sufficient evidence to demonstrate that liver regeneration is similar between humans and rodents. At the same time, many of the same cytokines, growth factors, and signaling pathways are relevant. There are many gaps in our current knowledge. Understanding of this knowledge will provide more supportive clinical treatment strategies, including small-scale liver transplantation and high-quality regenerative process after surgical resection, and offer possible targets to treat the dysregulation of regeneration that occurs in chronic hepatic diseases and tumors. Current research work, such as the use of animal models as in vivo vectors for high-quality human hepatocytes, represents a unique and significant cutting edge in the field of liver regeneration.
Collapse
Affiliation(s)
- Wei Huang
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.,Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Ning Han
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.,Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Lingyao Du
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.,Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Ming Wang
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.,Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Liyu Chen
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.,Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Hong Tang
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.,Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| |
Collapse
|
11
|
Sheng M, Lin Y, Xu D, Tian Y, Zhan Y, Li C, Farmer DG, Kupiec-Weglinski JW, Ke B. CD47-Mediated Hedgehog/SMO/GLI1 Signaling Promotes Mesenchymal Stem Cell Immunomodulation in Mouse Liver Inflammation. Hepatology 2021; 74:1560-1577. [PMID: 33765345 PMCID: PMC9436023 DOI: 10.1002/hep.31831] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 02/18/2021] [Accepted: 03/10/2021] [Indexed: 12/22/2022]
Abstract
BACKGROUND AND AIMS The cluster of differentiation 47 (CD47)-signal regulatory protein alpha (SIRPα) signaling pathway plays important roles in immune homeostasis and tissue inflammatory response. Activation of the Hedgehog/smoothened (SMO)/GLI family zinc finger 1 (Gli1) pathway regulates cell growth, differentiation, and immune function. However, it remains unknown whether and how the CD47-SIRPα interaction may regulate Hedgehog/SMO/Gli1 signaling in mesenchymal stem cell (MSC)-mediated immune regulation during sterile inflammatory liver injury. APPROACH AND RESULTS In a mouse model of ischemia/reperfusion (IR)-induced sterile inflammatory liver injury, we found that adoptive transfer of MSCs increased CD47 expression and ameliorated liver IR injury. However, deletion of CD47 in MSCs exacerbated IR-induced liver damage, with increased serum ALT levels, macrophage/neutrophil infiltration, and pro-inflammatory mediators. MSC treatment augmented SIRPα, Hedgehog/SMO/Gli1, and Notch1 intracellular domain (NICD), whereas CD47-deficient MSC treatment reduced these gene expressions in IR-stressed livers. Moreover, disruption of myeloid SMO or Notch1 increased IR-triggered liver inflammation with diminished Gli1 and NICD, but enhanced NIMA related kinase 7 (NEK7) and NLR family pyrin domain containing 3 (NLRP3) activation in MSC-transferred mice. Using a MSC/macrophage co-culture system, we found that MSC CD47 and macrophage SIRPα expression were increased after LPS stimulation. The CD47-SIRPα interaction increased macrophage Gli1 and NICD nuclear translocation, whereby NICD interacted with Gli1 and regulated its target gene Dvl2 (dishevelled segment polarity protein 2), which in turn inhibited NEK7/NLRP3 activity. CONCLUSIONS The CD47-SIRPα signaling activates the Hedgehog/SMO/Gli1 pathway, which controls NEK7/NLRP3 activity through a direct interaction between Gli1 and NICD. NICD is a coactivator of Gli1, and the target gene Dvl2 regulated by the NICD-Gli1 complex is crucial for the modulation of NLRP3-driven inflammatory response in MSC-mediated immune regulation. Our findings provide potential therapeutic targets in MSC-mediated immunotherapy of sterile inflammatory liver injury.
Collapse
Affiliation(s)
- Mingwei Sheng
- The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA,Department of Anesthesiology, Tianjin First Center Hospital, Nankai University, Tianjin, China
| | - Yuanbang Lin
- The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA,Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Dongwei Xu
- The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA,Department of Liver Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - Yizhu Tian
- The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Yongqiang Zhan
- The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Changyong Li
- The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Douglas G. Farmer
- The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Jerzy W. Kupiec-Weglinski
- The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Bibo Ke
- The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA,Corresponding author: Bibo Ke, MD, PhD. The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, 77-120 CHS, 10833 Le Conte Ave, Los Angeles, CA 90095. Tel: (310) 825-7444; Fax: (310) 267-2367; .
| |
Collapse
|
12
|
Ishida K, Seki A, Kawaguchi K, Nasti A, Yamato M, Inui H, Komura T, Yamashita T, Arai K, Yamashita T, Mizukoshi E, Honda M, Wada T, Harada K, Kaneko S, Sakai Y. Restorative effect of adipose tissue-derived stem cells on impaired hepatocytes through Notch signaling in non-alcoholic steatohepatitis mice. Stem Cell Res 2021; 54:102425. [PMID: 34119957 DOI: 10.1016/j.scr.2021.102425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 04/11/2021] [Accepted: 06/02/2021] [Indexed: 02/06/2023] Open
Abstract
Adipose tissue-derived stem cells (ADSCs) have been suggested as a novel treatment for non-alcoholic steatohepatitis (NASH); however, the mechanisms underlying their therapeutic effect remain poorly understood. In this study, we aimed to investigate the association of Notch signaling, which is crucial for cellular proliferation and differentiation in ADSC-mediated treatment of NASH. Flow cytometry analysis of ADSCs showed that they expressed the Notch ligands JAG1, DLL1, and DLL4. The expression of genes associated with the Notch signaling pathway was attenuated in hepatocytes of NASH model mice. We further observed ADSC-mediated activation of Notch signaling in these hepatocytes in addition to an increase in proliferating cell nuclear antigen+ cells and a decrease in TdT-mediated dUTP-biotin nick end labeling+ apoptotic cells. Co-culture of palmitic acid-induced steatotic hepatocytes and ADSCs resulted in the activation of Notch signaling and reduction of apoptosis of steatotic hepatocytes. Moreover, inhibition of Notch signaling by a γ-secretase inhibitor and knockdown of Notch ligands using siRNA attenuated the anti-apoptotic effect of co-cultured ADSCs in vitro. Our findings show that the Notch signaling pathway is involved in the inhibition of apoptosis and restoration of cellular proliferation of hepatocytes from NASH mice following ADSC treatment.
Collapse
Affiliation(s)
- Kosuke Ishida
- System Biology, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Akihiro Seki
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
| | - Kazunori Kawaguchi
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
| | - Alessandro Nasti
- System Biology, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Masatoshi Yamato
- Department of Disease Control and Homeostasis, College of Medical Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Hiiro Inui
- System Biology, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Takuya Komura
- Department of Gastroenterology, National Hospital Organization Kanazawa Medical Center, Kanazawa, Japan
| | - Taro Yamashita
- Department of General Medicine, Kanazawa University Hospital, Kanazawa, Japan
| | - Kuniaki Arai
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
| | - Tatsuya Yamashita
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
| | - Eishiro Mizukoshi
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
| | - Masao Honda
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Kanazawa University, Kanazawa, Japan
| | - Kenichi Harada
- Department of Human Pathology, Kanazawa University, Kanazawa, Japan
| | - Shuichi Kaneko
- System Biology, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Kanazawa, Japan; Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan; Department of Disease Control and Homeostasis, College of Medical Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Yoshio Sakai
- Department of Gastroenterology, Kanazawa University Hospital, Kanazawa, Japan.
| |
Collapse
|
13
|
Gao J, Fan L, Zhao L, Su Y. The interaction of Notch and Wnt signaling pathways in vertebrate regeneration. CELL REGENERATION (LONDON, ENGLAND) 2021; 10:11. [PMID: 33791915 PMCID: PMC8012441 DOI: 10.1186/s13619-020-00072-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 12/14/2020] [Indexed: 12/21/2022]
Abstract
Regeneration is an evolutionarily conserved process in animal kingdoms, however, the regenerative capacities differ from species and organ/tissues. Mammals possess very limited regenerative potential to replace damaged organs, whereas non-mammalian species usually have impressive abilities to regenerate organs. The regeneration process requires proper spatiotemporal regulation from key signaling pathways. The canonical Notch and Wnt signaling pathways, two fundamental signals guiding animal development, have been demonstrated to play significant roles in the regeneration of vertebrates. In recent years, increasing evidence has implicated the cross-talking between Notch and Wnt signals during organ regeneration. In this review, we summarize the roles of Notch signaling and Wnt signaling during several representative organ regenerative events, emphasizing the functions and molecular bases of their interplay in these processes, shedding light on utilizing these two signaling pathways to enhance regeneration in mammals and design legitimate therapeutic strategies.
Collapse
Affiliation(s)
- Junying Gao
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, 266003, Shandong, China.,College of Fisheries, Ocean University of China, Qingdao, 266003, Shandong, China
| | - Lixia Fan
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, 266003, Shandong, China.,College of Fisheries, Ocean University of China, Qingdao, 266003, Shandong, China
| | - Long Zhao
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, 266003, Shandong, China. .,College of Fisheries, Ocean University of China, Qingdao, 266003, Shandong, China.
| | - Ying Su
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, 266003, Shandong, China. .,College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, Shandong, China.
| |
Collapse
|
14
|
Li H, Chang C, Li X, Zhang R. The roles and activation of endocardial Notch signaling in heart regeneration. CELL REGENERATION (LONDON, ENGLAND) 2021; 10:3. [PMID: 33521843 PMCID: PMC7847831 DOI: 10.1186/s13619-020-00060-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/07/2020] [Indexed: 12/14/2022]
Abstract
As a highly conserved signaling pathway in metazoans, the Notch pathway plays important roles in embryonic development and tissue regeneration. Recently, cardiac injury and regeneration have become an increasingly popular topic for biomedical research, and Notch signaling has been shown to exert crucial functions during heart regeneration as well. In this review, we briefly summarize the molecular functions of the endocardial Notch pathway in several cardiac injury and stress models. Although there is an increase in appreciating the importance of endocardial Notch signaling in heart regeneration, the mechanism of its activation is not fully understood. This review highlights recent findings on the activation of the endocardial Notch pathway by hemodynamic blood flow change in larval zebrafish ventricle after partial ablation, a process involving primary cilia, mechanosensitive ion channel Trpv4 and mechanosensitive transcription factor Klf2.
Collapse
Affiliation(s)
- Huicong Li
- School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Cheng Chang
- School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Xueyu Li
- School of Life Sciences, Fudan University, Shanghai, China.
| | - Ruilin Zhang
- School of Basic Medical Sciences, Wuhan University, Wuhan, China.
| |
Collapse
|
15
|
Maladaptive regeneration - the reawakening of developmental pathways in NASH and fibrosis. Nat Rev Gastroenterol Hepatol 2021; 18:131-142. [PMID: 33051603 PMCID: PMC7854502 DOI: 10.1038/s41575-020-00365-6] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/28/2020] [Indexed: 02/06/2023]
Abstract
With the rapid expansion of the obesity epidemic, nonalcoholic fatty liver disease is now the most common chronic liver disease, with almost 25% global prevalence. Nonalcoholic fatty liver disease ranges in severity from simple steatosis, a benign 'pre-disease' state, to the liver injury and inflammation that characterize nonalcoholic steatohepatitis (NASH), which in turn predisposes individuals to liver fibrosis. Fibrosis is the major determinant of clinical outcomes in patients with NASH and is associated with increased risks of cirrhosis and hepatocellular carcinoma. NASH has no approved therapies, and liver fibrosis shows poor response to existing pharmacotherapy, in part due to an incomplete understanding of the underlying pathophysiology. Patient and mouse data have shown that NASH is associated with the activation of developmental pathways: Notch, Hedgehog and Hippo-YAP-TAZ. Although these evolutionarily conserved fundamental signals are known to determine liver morphogenesis during development, new data have shown a coordinated and causal role for these pathways in the liver injury response, which becomes maladaptive during obesity-associated chronic liver disease. In this Review, we discuss the aetiology of this reactivation of developmental pathways and review the cell-autonomous and cell-non-autonomous mechanisms by which developmental pathways influence disease progression. Finally, we discuss the potential prognostic and therapeutic implications of these data for NASH and liver fibrosis.
Collapse
|
16
|
Liver regeneration: biological and pathological mechanisms and implications. Nat Rev Gastroenterol Hepatol 2021; 18:40-55. [PMID: 32764740 DOI: 10.1038/s41575-020-0342-4] [Citation(s) in RCA: 424] [Impact Index Per Article: 141.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/24/2020] [Indexed: 02/08/2023]
Abstract
The liver is the only solid organ that uses regenerative mechanisms to ensure that the liver-to-bodyweight ratio is always at 100% of what is required for body homeostasis. Other solid organs (such as the lungs, kidneys and pancreas) adjust to tissue loss but do not return to 100% of normal. The current state of knowledge of the regenerative pathways that underlie this 'hepatostat' will be presented in this Review. Liver regeneration from acute injury is always beneficial and has been extensively studied. Experimental models that involve partial hepatectomy or chemical injury have revealed extracellular and intracellular signalling pathways that are used to return the liver to equivalent size and weight to those prior to injury. On the other hand, chronic loss of hepatocytes, which can occur in chronic liver disease of any aetiology, often has adverse consequences, including fibrosis, cirrhosis and liver neoplasia. The regenerative activities of hepatocytes and cholangiocytes are typically characterized by phenotypic fidelity. However, when regeneration of one of the two cell types fails, hepatocytes and cholangiocytes function as facultative stem cells and transdifferentiate into each other to restore normal liver structure. Liver recolonization models have demonstrated that hepatocytes have an unlimited regenerative capacity. However, in normal liver, cell turnover is very slow. All zones of the resting liver lobules have been equally implicated in the maintenance of hepatocyte and cholangiocyte populations in normal liver.
Collapse
|
17
|
Peng YC, Lv TH, Du ZK, Cun XN, Yang KM. Liver Macrophages Stimulate the Expression of Hepatocyte Nuclear Factor-6 and Promote Hepatocyte Proliferation at the Early Stage of Liver Regeneration. Bull Exp Biol Med 2020; 170:40-45. [PMID: 33222081 DOI: 10.1007/s10517-020-05000-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Indexed: 01/09/2023]
Abstract
Hepatocyte nuclear factor (HNF-6) is a liver-specific protein and a key component in the differentiation process during the development of mature liver. The immunohistochemical staining and RT-PCR techniques were employed to examine the expression of HNF-6 and proliferation of Ki-67+ cells during the early regeneration of the liver on postsurgery in 3, 6, 12, and 24 h in original model of partial hepatectomy in rats. The earliest proliferating (Ki-67+) cells were observed in 3 h after surgery in liver sinusoids (liver macrophages) and then in liver parenchyma. Expression of HNF-6 in hepatocytes and epithelial cells of the bile ducts attained maximum in 6 h after surgery. At later terms, this parameter somewhat decreased, but still surpassed the control level.
Collapse
Affiliation(s)
- Y Ch Peng
- Department of Anatomy, School of Basic Medical Science, Dali University, Dali, PR China
| | - T H Lv
- Department of Surgery of Dali Prefecture People's Hospital, Dali, PR China
| | - Zh K Du
- Department of Anatomy, School of Basic Medical Science, Dali University, Dali, PR China
| | - X N Cun
- Department of Surgery of Affiliated Hospital of Dali University, Dali, PR China
| | - K M Yang
- Department of Anatomy, School of Basic Medical Science, Dali University, Dali, PR China.
| |
Collapse
|
18
|
Häussinger D, Kordes C. Space of Disse: a stem cell niche in the liver. Biol Chem 2020; 401:81-95. [PMID: 31318687 DOI: 10.1515/hsz-2019-0283] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 07/08/2019] [Indexed: 02/06/2023]
Abstract
Recent evidence indicates that the plasticity of preexisting hepatocytes and bile duct cells is responsible for the appearance of intermediate progenitor cells capable of restoring liver mass after injury without the need of a stem cell compartment. However, mesenchymal stem cells (MSCs) exist in all organs and are associated with blood vessels which represent their perivascular stem cell niche. MSCs are multipotent and can differentiate into several cell types and are known to support regenerative processes by the release of immunomodulatory and trophic factors. In the liver, the space of Disse constitutes a stem cell niche that harbors stellate cells as liver resident MSCs. This perivascular niche is created by extracellular matrix proteins, sinusoidal endothelial cells, liver parenchymal cells and sympathetic nerve endings and establishes a microenvironment that is suitable to maintain stellate cells and to control their fate. The stem cell niche integrity is important for the behavior of stellate cells in the normal, regenerative, aged and diseased liver. The niche character of the space of Disse may further explain why the liver can become an organ of extra-medullar hematopoiesis and why this organ is frequently prone to tumor metastasis.
Collapse
Affiliation(s)
- Dieter Häussinger
- Clinic of Gastroenterology, Hepatology and Infectious Diseases, Heinrich Heine University Düsseldorf, Moorenstraße 5, D-40225 Düsseldorf, Germany
| | - Claus Kordes
- Clinic of Gastroenterology, Hepatology and Infectious Diseases, Heinrich Heine University Düsseldorf, Moorenstraße 5, D-40225 Düsseldorf, Germany
| |
Collapse
|
19
|
Tsomaia K, Patarashvili L, Karumidze N, Bebiashvili I, Azmaipharashvili E, Modebadze I, Dzidziguri D, Sareli M, Gusev S, Kordzaia D. Liver structural transformation after partial hepatectomy and repeated partial hepatectomy in rats: A renewed view on liver regeneration. World J Gastroenterol 2020; 26:3899-3916. [PMID: 32774065 PMCID: PMC7385567 DOI: 10.3748/wjg.v26.i27.3899] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 05/12/2020] [Accepted: 06/23/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The phenomenon of liver regeneration after partial hepatectomy (PH) is still a subject of considerable interest due to the increasing frequency of half liver transplantation on the one hand, and on the other hand, new surgical approaches which allow removal of massive space-occupying hepatic tumors, which earlier was considered as inoperable. Interestingly, the mechanisms of liver regeneration are extensively studied after PH but less attention is paid to the architectonics of the regenerated organ. Because of this, the question “How does the structure of regenerated liver differ from normal, regular liver?” has not been fully answered yet. Furthermore, almost without any attention is left the liver's structural transformation after repeated hepatectomy (of the re-regenereted liver).
AIM To compare the architectonics of the lobules and circulatory bed of normal, re-generated and re-regenerated livers.
METHODS The livers of 40 adult, male, albino Wistar rats were studied. 14 rats were subjected to PH - the 1st study group (SG1); 10 rats underwent repeated PH – the 2nd study group (SG2); 16 rats were subjected to sham operation - control group (CG); The livers were studied after 9 months from PH, and after 6 months from repeated PH. Cytological (Schiff reaction for the determination of DNA concen-tration), histological (H&E, Masson trichrome, CK8 Immunohistochemical marker, transparent slides after Indian Ink injection, ), morphometrical (hepatocytes areas, perimeters and ploidy) and Electron Microscopical (Scanning Electron Microscopy of corrosion casts) methods were used.
RESULTS In the SG1 and SG2, the area of hepatocytes and their perimeter are increased compared to the CG (P < 0.05). However, the areas and perimeters of the hepatocytes of the SG1 and SG2 groups reveal a lesser difference. In regenerated (SG1) and re-regenerated (SG2) livers, the hepatocytes form the remodeled lobules, which size (300-1200 µm) exceeds the sizes of the lobules from CG (300-600 µm). The remodeled lobules (especially the “mega-lobules” with the sizes 1000-1200 µm) contain the transformed meshworks of the sinusoids, the part of which is dilated asymmetrically. This meshwork might have originated from the several portal venules (interlobular and/or inlet). The boundaries between the adjacent lobules (including mega-lobules) are widened and filled by connective tissue fibers, which gives the liver parenchyma a nodular look. In SG2 the unevenness of sinusoid diameters, as well as the boundaries between the lobules (including the mega-lobules) are more vividly expressed in comparison with SG1. The liver tissue of both SG1 and SG2 is featured by the slightly expressed ductular reaction.
CONCLUSION Regenerated and re-regenerated livers in comparison with normal liver contain hypertrophied hepatocytes with increased ploidy which together with transformed sinusoidal and biliary meshworks form the remodeled lobulli.
Collapse
Affiliation(s)
- Keti Tsomaia
- Faculty of Medicine, Ivane Javakhishvili Tbilisi State University, Tbilisi 0159, Georgia
| | - Leila Patarashvili
- Faculty of Medicine, Ivane Javakhishvili Tbilisi State University, Tbilisi 0159, Georgia
| | - Nino Karumidze
- Faculty of Medicine, Ivane Javakhishvili Tbilisi State University, Tbilisi 0159, Georgia
| | - Irakli Bebiashvili
- Faculty of Medicine, Ivane Javakhishvili Tbilisi State University, Tbilisi 0159, Georgia
| | - Elza Azmaipharashvili
- Faculty of Medicine, Ivane Javakhishvili Tbilisi State University, Tbilisi 0159, Georgia
| | - Irina Modebadze
- Faculty of Exact and Natural Sciences, Ivane Javakhishvili Tbilisi State University, Tbilisi 0179, Georgia
| | - Diana Dzidziguri
- Faculty of Exact and Natural Sciences, Ivane Javakhishvili Tbilisi State University, Tbilisi 0179, Georgia
| | - Marom Sareli
- Department of Surgical Oncology (Surgery C), Chaim Sheba Medical Center at HaShomer, Tel Aviv 52621, Israel
| | - Sergey Gusev
- Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow 119435, Russia
| | - Dimitri Kordzaia
- Faculty of Medicine, Ivane Javakhishvili Tbilisi State University, Tbilisi 0159, Georgia
- Clinical Anatomy and Operative Surgery, Ivane Javakhishvili Tbilisi State University, Tbilisi 0159, Georgia
| |
Collapse
|
20
|
Abo-Al-Ela HG, Burgos-Aceves MA. Exploring the role of microRNAs in axolotl regeneration. J Cell Physiol 2020; 236:839-850. [PMID: 32638401 DOI: 10.1002/jcp.29920] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 05/30/2020] [Accepted: 06/21/2020] [Indexed: 12/13/2022]
Abstract
The axolotl, Ambystoma mexicanum, is used extensively for research in developmental biology, particularly for its ability to regenerate and restore lost organs, including in the nervous system, to full functionality. Regeneration in mammals typically depends on the healing process and scar formation with limited replacement of lost tissue. Other organisms, such as spiny mice (Acomys cahirinus), salamanders, and zebrafish, are able to regenerate some damaged body components. Blastema is a tissue that is formed after tissue injury in such organisms and is composed of progenitor cells or dedifferentiated cells that differentiate into various cell types during regeneration. Thus, identifying the molecules responsible for initiation of blastema formation is an important aspect for understanding regeneration. Introns, a major source of noncoding RNAs (ncRNAs), have characteristic sizes in the axolotl, particularly in genes associated with development. These ncRNAs, particularly microRNAs (miRNAs), exhibit dynamic regulation during regeneration. These miRNAs play an essential role in timing and control of gene expression to order and organize processes necessary for blastema creation. Master keys or molecules that underlie the remarkable regenerative abilities of the axolotl remain to be fully explored and exploited. Further and ongoing research on regeneration promises new knowledge that may allow improved repair and renewal of human tissues.
Collapse
Affiliation(s)
- Haitham G Abo-Al-Ela
- Department of Aquaculture, Faculty of Fish Resources, Suez University, Suez, Egypt
| | - Mario A Burgos-Aceves
- Department of Chemistry and Biology, University of Salerno, Fisciano, Salerno, Italy
| |
Collapse
|
21
|
Liver regeneration and liver metastasis. Semin Cancer Biol 2020; 71:86-97. [PMID: 32532594 DOI: 10.1016/j.semcancer.2020.05.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/18/2020] [Accepted: 05/18/2020] [Indexed: 12/12/2022]
Abstract
Surgical resection for primary and secondary hepatic neoplasms provides the best chance of cure. Advanced surgical techniques such as portal vein embolisation, two-staged hepatectomy and associated liver partition and portal vein ligation for staged-hepatectomy (ALPPS) have facilitated hepatic resection in patients with previously unresectable, bi-lobar disease. These techniques are frequently employed to ensure favourable clinical outcomes and avoid potentially fatal post-operative complications such as small for size syndrome and post-hepatectomy liver failure. However, they rely on the innate ability of the liver to regenerate. As our knowledge of liver organogenesis, liver regeneration and hepatocarcinogenesis has expanded in recent decades it has come to light that liver regeneration may also drive tumour recurrence. Clinical studies in patients undergoing portal vein embolisation indicate that tumours may progress following the procedure in concordance with liver regeneration and hypertrophy, however overall survival in these patients has not been shown to be worse. In this article, we delve into the mechanisms underlying liver regeneration to better understand the complex ways in which this may affect tumour behaviour and ultimately inform clinical decisions.
Collapse
|
22
|
Fragoulis A, Schenkel J, Herzog M, Schellenberg T, Jahr H, Pufe T, Trautwein C, Kensler TW, Streetz KL, Wruck CJ. Nrf2 Ameliorates DDC-Induced Sclerosing Cholangitis and Biliary Fibrosis and Improves the Regenerative Capacity of the Liver. Toxicol Sci 2020; 169:485-498. [PMID: 30825315 DOI: 10.1093/toxsci/kfz055] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The Nrf2 pathway protects against oxidative stress and induces regeneration of various tissues. Here, we investigated whether Nrf2 protects from sclerosing cholangitis and biliary fibrosis and simultaneously induces liver regeneration. Diet containing 3,5-diethoxycarbonyl-1,4-dihydrocollidine (DDC) was fed to Nrf2-KO mice (Nrf2-/-), mice with liver-specific hyperactivated Nrf2 (HKeap1-/-) and wild-type (WT) littermates to induce cholangitis, liver fibrosis, and oval cell expansion. HKeap1-/--mice were protected from almost all DDC-induced injury compared with WT and Nrf2-/-. Liver injury in Nrf2-/- and WT mice was mostly similar, albeit Nrf2-/- suffered more from DDC diet as seen for several parameters. Nrf2 activity was especially important for the expression of the hepatic efflux transporters Abcg2 and Abcc2-4, which are involved in hepatic toxin elimination. Surprisingly, cell proliferation was more enhanced in Nrf2-/-- and HKeap1-/--mice compared with WT. Interestingly, Nrf2-/--mice failed to sufficiently activate oval cell expansion after DDC treatment and showed almost no resident oval cell population under control conditions. The resident oval cell population of untreated HKeap1-/--mice was increased and DDC treatment resulted in a stronger oval cell expansion compared with WT. We provide evidence that Nrf2 activation protects from DDC-induced sclerosing cholangitis and biliary fibrosis. Moreover, our data establish a possible role of Nrf2 in oval cell expansion.
Collapse
Affiliation(s)
- Athanassios Fragoulis
- Department of Anatomy and Cell Biology.,Molecular Tumor Biology, Department of General, Visceral and Transplantation Surgery
| | | | | | | | | | | | - Christian Trautwein
- Department of Medicine III, Medical Faculty, Uniklinik RWTH Aachen University, 52074 Aachen, Germany
| | - Thomas W Kensler
- Department of Environmental Health Sciences, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205
| | - Konrad L Streetz
- Department of Medicine III, Medical Faculty, Uniklinik RWTH Aachen University, 52074 Aachen, Germany
| | | |
Collapse
|
23
|
Soydemir S, Comella O, Abdelmottaleb D, Pritchett J. Does Mechanocrine Signaling by Liver Sinusoidal Endothelial Cells Offer New Opportunities for the Development of Anti-fibrotics? Front Med (Lausanne) 2020; 6:312. [PMID: 31998732 PMCID: PMC6962108 DOI: 10.3389/fmed.2019.00312] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 12/11/2019] [Indexed: 01/17/2023] Open
Affiliation(s)
- Sumeyye Soydemir
- Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, United Kingdom
| | - Olivia Comella
- Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, United Kingdom
| | - Dina Abdelmottaleb
- Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, United Kingdom.,Centre for Bioscience, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, United Kingdom
| | - James Pritchett
- Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, United Kingdom.,Centre for Bioscience, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, United Kingdom
| |
Collapse
|
24
|
Ferrarotto R, Eckhardt G, Patnaik A, LoRusso P, Faoro L, Heymach JV, Kapoun AM, Xu L, Munster P. A phase I dose-escalation and dose-expansion study of brontictuzumab in subjects with selected solid tumors. Ann Oncol 2019; 29:1561-1568. [PMID: 29726923 DOI: 10.1093/annonc/mdy171] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Background Brontictuzumab is a monoclonal antibody that targets Notch1 and inhibits pathway activation. The purpose of this first-in-human study was to determine the maximum tolerated dose (MTD), safety, pharmacokinetics, immunogenicity and preliminary efficacy of brontictuzumab in patients with solid tumors. Patients and methods Subjects with selected refractory solid tumors were eligible. Brontictuzumab was administered intravenously at various dose levels and schedule during dose escalation, and at 1.5 mg/kg every 3 weeks (Q3W) during expansion. Evidence of Notch1 pathway activation as determined by an immunohistochemistry assay was required for entry in the expansion cohort. Adverse events were graded according to the NCI-CTCAE v 4.03. Efficacy was assessed by RECIST 1.1. Results Forty-eight subjects enrolled (33 in dose escalation and 15 in the expansion phase). The MTD was 1.5 mg/kg Q3W. Dose-limiting toxicities were grade 3 diarrhea in two subjects and grade 3 fatigue in one subject. The most common drug-related adverse events of any grade were diarrhea (71%), fatigue (44%), nausea (40%), vomiting (21%), and AST increase (21%). Brontictuzumab exhibited nonlinear pharmacokinetics with dose-dependent terminal half-life ranging 1-4 days. Clinical benefit was seen in 6 of 36 (17%) assessable subjects: 2 had unconfirmed partial response (PR) and 4 subjects had prolonged (≥ 6 months) disease stabilization (SD). Both PRs and three prolonged SD occurred in adenoid cystic carcinoma (ACC) subjects with evidence of Notch1 pathway activation. Pharmacodynamic effects of brontictuzumab were seen in patients' blood and tumor. Conclusion Brontictuzumab was well tolerated at the MTD. The main toxicity was diarrhea, an on-target effect of Notch1 inhibition. An efficacy signal was noted in subjects with ACC and Notch1 pathway activation. ClinicalTrials.gov identifier NCT01778439.
Collapse
Affiliation(s)
- R Ferrarotto
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, USA.
| | - G Eckhardt
- Division of Medical Oncology, University of Colorado Denver School of Medicine, Denver, USA
| | - A Patnaik
- Phase I Medical Oncology Program, South Texas Accelerated Research Therapeutics (START), San Antonio, USA
| | - P LoRusso
- Yale School of Medicine, Experimental Therapeutics, New Haven, USA
| | - L Faoro
- OncoMed Pharmaceuticals Inc, Redwood City, USA
| | - J V Heymach
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - A M Kapoun
- OncoMed Pharmaceuticals Inc, Redwood City, USA
| | - L Xu
- OncoMed Pharmaceuticals Inc, Redwood City, USA
| | - P Munster
- Division of Hematology and Oncology, University of California San Francisco, San Francisco, USA
| |
Collapse
|
25
|
Yang M, Liu H, Wang Y, Wu G, Qiu S, Liu C, Tan Z, Guo J, Zhu L. Hypoxia reduces the osteogenic differentiation of peripheral blood mesenchymal stem cells by upregulating Notch-1 expression. Connect Tissue Res 2019; 60:583-596. [PMID: 31035811 DOI: 10.1080/03008207.2019.1611792] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Purpose: Mesenchymal stem cells (MSCs) seeded on biocompatible scaffolds have therapeutic potential for bone defect repair. However, MSCs can be affected by hypoxia and nutritional deficiency due to a lack of blood vessels in the scaffolds. Here, we explored the effects of hypoxia on MSC differentiation to clarify these mechanisms. Methods: Peripheral blood mesenchymal stem cells (PBMSCs) were cultured in small individual chambers with oxygen concentrations of 1%, 9%, and 21%. Cell proliferation was evaluated by Cell Counting Kit 8 assays, and cell survival was determined using live/dead assays. Scratch assays were performed to evaluate cell migration. Ca2+ deposition/mineralization experiments, reverse transcription quantitative real-time polymerase chain reaction, and Western blotting were performed to assess the osteogenic differentiation of cells. Notch1 expression was downregulated by lentivirus-transfected PBMSCs to observe the effects of Notch1 knockdown on osteogenic gene and protein expression. Results: PBMSCs exposed to hypoxia (1% O2) demonstrated accelerated proliferation, increased migration, and reduced survival in the absence of serum. Although 9% oxygen promoted osteogenic differentiation, the osteogenic differentiation of PBMSCs was significantly reduced by 1% O2, and this effect was associated with increased Notch1 expression. Reducing Notch1 expression using small interfering RNA significantly restored the osteogenic differentiation of PBMSCs. Conclusions: Hypoxia accelerated proliferation, increased migration, and reduced PBMSC differentiation into osteoblasts by increasing Notch1 expression. These findings may contribute to the development of appropriate cell culture or in vivo transplantation conditions to maintain the full osteogenic potential of PBMSCs.
Collapse
Affiliation(s)
- Minsheng Yang
- Department of Spine Orthopedics, Zhujiang Hospital, Southern Medical University , Guangzhou , China
| | - Haixin Liu
- People's Hospital of Deyang City , Sichuan , China
| | - Yihan Wang
- Department of Spine Orthopedics, Zhujiang Hospital, Southern Medical University , Guangzhou , China
| | - Guofeng Wu
- Department of Orthopedics, Jingzhou No. 1 People's Hospital and First Affiliated Hospital of Yangtze University , Jingzhou , China
| | - Sujun Qiu
- Department of Spine Orthopedics, Zhujiang Hospital, Southern Medical University , Guangzhou , China
| | - Chun Liu
- Department of Spine Orthopedics, Zhujiang Hospital, Southern Medical University , Guangzhou , China
| | - Zhiwen Tan
- Department of Spine Orthopedics, Zhujiang Hospital, Southern Medical University , Guangzhou , China
| | - Jiasong Guo
- Department of Histology and Embryology, Southern Medical University , Guangzhou , China.,Key Laboratory of Tissue Construction and Detection of Guangdong Province , Guangzhou , China.,Institute of Bone Biology, Academy of Orthopaedics , Guangdong Province , Guangzhou , China
| | - Lixin Zhu
- Department of Spine Orthopedics, Zhujiang Hospital, Southern Medical University , Guangzhou , China
| |
Collapse
|
26
|
Jagged1-mediated myeloid Notch1 signaling activates HSF1/Snail and controls NLRP3 inflammasome activation in liver inflammatory injury. Cell Mol Immunol 2019; 17:1245-1256. [PMID: 31673056 PMCID: PMC7784844 DOI: 10.1038/s41423-019-0318-x] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 10/09/2019] [Indexed: 12/12/2022] Open
Abstract
Notch signaling plays important roles in the regulation of immune cell functioning during the inflammatory response. Activation of the innate immune signaling receptor NLRP3 promotes inflammation in injured tissue. However, it remains unknown whether Jagged1 (JAG1)-mediated myeloid Notch1 signaling regulates NLRP3 function in acute liver injury. Here, we report that myeloid Notch1 signaling regulates the NLRP3-driven inflammatory response in ischemia/reperfusion (IR)-induced liver injury. In a mouse model of liver IR injury, Notch1-proficient (Notch1FL/FL) mice receiving recombinant JAG1 showed a reduction in IR-induced liver injury and increased Notch intracellular domain (NICD) and heat shock transcription factor 1 (HSF1) expression, whereas myeloid-specific Notch1 knockout (Notch1M-KO) aggravated hepatocellular damage even with concomitant JAG1 treatment. Compared to JAG1-treated Notch1FL/FL controls, Notch1M-KO mice showed diminished HSF1 and Snail activity but augmented NLRP3/caspase-1 activity in ischemic liver. The disruption of HSF1 reduced Snail activation and enhanced NLRP3 activation, while the adoptive transfer of HSF1-expressing macrophages to Notch1M-KO mice augmented Snail activation and mitigated IR-triggered liver inflammation. Moreover, the knockdown of Snail in JAG1-treated Notch1FL/FL livers worsened hepatocellular functioning, reduced TRX1 expression and increased TXNIP/NLRP3 expression. Ablation of myeloid Notch1 or Snail increased ASK1 activation and hepatocellular apoptosis, whereas the activation of Snail increased TRX1 expression and reduced TXNIP, NLRP3/caspase-1, and ROS production. Our findings demonstrated that JAG1-mediated myeloid Notch1 signaling promotes HSF1 and Snail activation, which in turn inhibits NLRP3 function and hepatocellular apoptosis leading to the alleviation of IR-induced liver injury. Hence, the Notch1/HSF1/Snail signaling axis represents a novel regulator of and a potential therapeutic target for liver inflammatory injury.
Collapse
|
27
|
Adams JM, Jafar-Nejad H. The Roles of Notch Signaling in Liver Development and Disease. Biomolecules 2019; 9:biom9100608. [PMID: 31615106 PMCID: PMC6843177 DOI: 10.3390/biom9100608] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 10/07/2019] [Accepted: 10/07/2019] [Indexed: 02/07/2023] Open
Abstract
The Notch signaling pathway plays major roles in organ development across animal species. In the mammalian liver, Notch has been found critical in development, regeneration and disease. In this review, we highlight the major advances in our understanding of the role of Notch activity in proper liver development and function. Specifically, we discuss the latest discoveries on how Notch, in conjunction with other signaling pathways, aids in proper liver development, regeneration and repair. In addition, we review the latest in the role of Notch signaling in the pathogenesis of liver fibrosis and chronic liver disease. Finally, recent evidence has shed light on the emerging connection between Notch signaling and glucose and lipid metabolism. We hope that highlighting the major advances in the roles of Notch signaling in the liver will stimulate further research in this exciting field and generate additional ideas for therapeutic manipulation of the Notch pathway in liver diseases.
Collapse
Affiliation(s)
- Joshua M Adams
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA.
- Program in Developmental Biology, Baylor College of Medicine, Houston, TX 77030, USA.
- Medical Scientist Training Program, Baylor College of Medicine, Houston, TX 77030, USA.
| | - Hamed Jafar-Nejad
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA.
- Program in Developmental Biology, Baylor College of Medicine, Houston, TX 77030, USA.
| |
Collapse
|
28
|
Riddiough GE, Fifis T, Muralidharan V, Perini MV, Christophi C. Searching for the link; mechanisms underlying liver regeneration and recurrence of colorectal liver metastasis post partial hepatectomy. J Gastroenterol Hepatol 2019; 34:1276-1286. [PMID: 30828863 DOI: 10.1111/jgh.14644] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 02/23/2019] [Accepted: 02/28/2019] [Indexed: 12/13/2022]
Abstract
Despite excellent treatment of primary colorectal cancer, the majority of deaths occur as a result of metastasis to the liver. Recent population studies have estimated that one quarter of patients with colorectal cancer will incur synchronous or metachronous colorectal liver metastasis. However, only one quarter of these patients will be eligible for potentially curative resection. Tumor recurrence occurs in reportedly 60% of patients undergoing hepatic resection, and the majority of intrahepatic recurrence occurs within the first 6 months of surgery. The livers innate ability to restore its homeostatic size, and volume facilitates major hepatic resection that currently offers the only chance of cure to patients with extensive hepatic metastases. Experimental and clinical evidence supports the notion that following partial hepatectomy, liver regeneration (LR) paradoxically drives tumor progression and increases the risk of recurrence. It is becoming increasingly clear that the processes that drive liver organogenesis, regeneration, and tumor progression are inextricably linked. This presents a major hurdle in the management of colorectal liver metastasis and other hepatic malignancies because therapies that reduce the risk of recurrence without hampering LR are sought. The processes and pathways underlying these phenomena are multiple, complex, and cross-communicate. In this review, we will summarize the common mechanisms contributing to both LR and tumor recurrence.
Collapse
Affiliation(s)
- Georgina E Riddiough
- Department of Surgery, Austin Health, University of Melbourne, Heidelberg, Victoria, Australia
| | - Theodora Fifis
- Department of Surgery, Austin Health, University of Melbourne, Heidelberg, Victoria, Australia
| | | | - Marcos V Perini
- Department of Surgery, Austin Health, University of Melbourne, Heidelberg, Victoria, Australia
| | - Christopher Christophi
- Department of Surgery, Austin Health, University of Melbourne, Heidelberg, Victoria, Australia
| |
Collapse
|
29
|
Liu C, Cheng X, Chen J, Wang Y, Wu X, Tian R, Liu B, Ding X, Sun Q, Gong W. Suppression of YAP/TAZ-Notch1-NICD axis by bromodomain and extraterminal protein inhibition impairs liver regeneration. Am J Cancer Res 2019; 9:3840-3852. [PMID: 31281517 PMCID: PMC6587347 DOI: 10.7150/thno.33370] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 05/06/2019] [Indexed: 12/16/2022] Open
Abstract
Background and aims: Biological mechanisms that control liver regeneration remain poorly defined. However, these mechanisms are remarkable issues in the clinic that affect management of hepatic loss caused by liver surgery, traumatic injury, chronic infection, or liver poisoning. Increasing evidence has shown that various growth factors, cytokines, and metabolic signaling pathways affect the liver regenerative process. Our aim is to study the effect of bromodomain and extraterminal (BET) protein inhibition on liver regeneration and its mechanism. Methods: We studied the role of BET protein inhibitor, JQ1, in liver regeneration in a mouse model after 70% partial hepatectomy (PH). We evaluated yes-associated protein (YAP)/transcriptional co-activator with PDZ-binding motif (TAZ) and Notch signaling pathways, which were affected by BET protein inhibitor in mouse hepatic tissues and primary hepatocytes in vivo and AML12 cell lines in vitro. We evaluated the relationship of YAP/TAZ and Notch signaling pathway using YAP/TAZ pathway inhibitor in liver regeneration in vivo. Moreover, we analyzed the relationship of YAP/TAZ and Notch signaling pathways via overexpression or RNA silencing of Yap in AML12 cells. Furthermore, we used Yap overexpression mouse model to examine whether it can rescue liver regeneration damage caused by inhibition of BET proteins. Results: In this study, we report that BET protein inhibitor JQ1 molecule impairs the early phase of liver regeneration in a mouse model after 70% PH. Mechanistically, YAP/TAZ and Notch1-NICD pathways were suppressed by BET protein inhibitor in mouse hepatic tissues and primary hepatocytes in vivo and mouse AML12 cell lines in vitro. By using YAP/TAZ pathway inhibitor, we confirmed that the liver regeneration and the activation of Notch pathway were impaired by the inhibition of YAP/TAZ pathway in vivo. Furthermore, the study showed that Yap knockdown by shRNA in normal mouse hepatic cell line downregulated Notch1 signal transduction, whereas Yap overexpression promoted Notch1-NICD signals. Specific overexpression of Yap in mouse liver could rescue the effect of BET protein inhibition on liver regeneration injury. Conclusion: These results revealed the crucial role of the YAP/TAZ-Notch1-NICD axis in liver regeneration. Therefore, BET protein inhibitors must be used in caution in the treatment of hepatic diseases by reason of its suppressive roles in liver regeneration.
Collapse
|
30
|
Sato T, Yamashina S, Izumi K, Ueno T, Koike M, Ikejima K, Peters C, Watanabe S. Cathepsin L-deficiency enhances liver regeneration after partial hepatectomy. Life Sci 2019; 221:293-300. [PMID: 30797017 DOI: 10.1016/j.lfs.2019.02.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 02/11/2019] [Accepted: 02/19/2019] [Indexed: 02/06/2023]
Abstract
AIM Cathepsin L (Ctsl) plays a pivotal role in lysosomal and autophagic proteolysis. Previous investigations revealed that partial hepatectomy (PH) decreases biosynthesis of cathepsins in liver, followed by suppression of lysosomal and autophagic proteolysis during liver regeneration. Conversely, it was reported that autophagy-deficiency suppressed liver regeneration. Thus, the purpose of this study is to determine if Ctsl deficiency affects liver regeneration after PH. METHODS 70% of PH was performed in male Ctsl-deficient mice (Ctsl-/-) and wild-type littermates (Ctsl +/+) after PH. Mice were sacrificed and wet weight of the whole remaining liver was measured. Bromodeoxyuridine (BrdU)-immunostaining of liver sections was performed. Expression of cyclin D1, p62, LC-3, Nrf2, cleaved-Notch1, Hes1 was evaluated by western blot analysis. NQO1 mRNA expression was measured by realtime-PCR. RESULTS After a 70% of PH, the liver mass was significantly restored within 5 days in Ctsl-/- mice compared to wild-type. Ctsl-deficiency enhanced the increases in both the rate of BrdU-positive cells and cyclin D1 expression after PH more than wild-type mice. On the other hand, Ctsl-deficiency upregulated p62, cleaved-Notch1 and Hes1 expression after PH. Moreover, the protein level of Nrf2 in the nucleus and mRNA expression of NQO1 in the liver after PH was also up-regulated in Ctsl-/- mice. CONCLUSIONS These findings suggest that accumulation of p62 due to loss of Ctsl plays an important role in liver regeneration through activation of Nrf2-Notch1 signaling. Taken together, Ctsl might be a new therapeutic target on disorder of liver regeneration.
Collapse
Affiliation(s)
- Toshifumi Sato
- Department of Gastroenterology, Juntendo University School of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Shunhei Yamashina
- Department of Gastroenterology, Juntendo University School of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, Japan.
| | - Kosuke Izumi
- Department of Gastroenterology, Juntendo University School of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Takashi Ueno
- Division of Proteomics and Biomolecular Science, Juntendo University School of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Masato Koike
- Department of Cell Biology and Neuroscience, Juntendo University School of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Kenichi Ikejima
- Department of Gastroenterology, Juntendo University School of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, Japan
| | - Christoph Peters
- Institute of Molecular Medicine and Cell Research, Albert-Ludwigs-University Freiburg, Freiburg, Germany
| | - Sumio Watanabe
- Department of Gastroenterology, Juntendo University School of Medicine, Hongo 2-1-1, Bunkyo-ku, Tokyo 113-8421, Japan
| |
Collapse
|
31
|
Takasu S, Yokoo Y, Ishii Y, Kijima A, Ogawa K, Umemura T. Molecular Pathological Differences in Global Gene Expression between Two Sustained Proliferative Lesions, Nodular Regenerative Hepatocellular Hyperplasia and Hepatocellular Adenoma, in Mice. Toxicol Pathol 2018; 47:44-52. [PMID: 30572783 DOI: 10.1177/0192623318810200] [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: 11/16/2022]
Abstract
Long-term exposure to piperonyl butoxide (PBO) induces multiple nodular masses along with hepatocellular tumors in the liver of mice. The histopathological features of the nodules led to our diagnosis of nodular regenerative hepatocellular hyperplasia (NRH). However, because of the lack of data on the biological characteristics of NRH, whether this lesion is truly nonneoplastic remains unknown. In this study, the molecular characteristics of NRH were compared with those of hepatocellular adenoma (HCA) by global gene expression analysis. Six-week-old male ICR mice were fed a diet containing 6,000 ppm PBO for 43 weeks to induce NRH and HCA development. Complementary DNA microarray analysis was performed using messenger RNA extracted from NRH and HCA frozen sections collected by laser microdissection. Hierarchical cluster analysis showed that all NRH samples clustered together but were separate from the HCA cluster. Pathway analysis revealed activation of the cell cycle and Delta-Notch signaling in both lesions, but the latter was more upregulated in HCA. Downregulation of cytochrome p450 enzymes was observed in NRH, but not in HCA. These results imply that NRH differs from HCA in terms of not only morphological but also molecular characteristics.
Collapse
Affiliation(s)
- Shinji Takasu
- 1 Division of Pathology, National Institute of Health Sciences, Kawasaki, Kanagawa, Japan
| | - Yuh Yokoo
- 1 Division of Pathology, National Institute of Health Sciences, Kawasaki, Kanagawa, Japan
| | - Yuji Ishii
- 1 Division of Pathology, National Institute of Health Sciences, Kawasaki, Kanagawa, Japan
| | - Aki Kijima
- 1 Division of Pathology, National Institute of Health Sciences, Kawasaki, Kanagawa, Japan
| | - Kumiko Ogawa
- 1 Division of Pathology, National Institute of Health Sciences, Kawasaki, Kanagawa, Japan
| | - Takashi Umemura
- 1 Division of Pathology, National Institute of Health Sciences, Kawasaki, Kanagawa, Japan.,2 Laboratory of Animal Pathology, Faculty of Animal Health Technology, Yamazaki University of Animal Health Technology, Hachioji, Tokyo, Japan
| |
Collapse
|
32
|
Tao X, Yin L, Xu L, Peng J. Dioscin: A diverse acting natural compound with therapeutic potential in metabolic diseases, cancer, inflammation and infections. Pharmacol Res 2018; 137:259-269. [DOI: 10.1016/j.phrs.2018.09.022] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 09/19/2018] [Accepted: 09/20/2018] [Indexed: 01/11/2023]
|
33
|
The role of the Notch signaling pathway in liver injury and repair. JOURNAL OF BIO-X RESEARCH 2018. [DOI: 10.1097/jbr.0000000000000014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
34
|
Zhang F, Zhang J, Li X, Li B, Tao K, Yue S. Notch signaling pathway regulates cell cycle in proliferating hepatocytes involved in liver regeneration. J Gastroenterol Hepatol 2018; 33:1538-1547. [PMID: 29384233 DOI: 10.1111/jgh.14110] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 01/11/2018] [Accepted: 01/22/2018] [Indexed: 12/27/2022]
Abstract
BACKGROUND AND AIM It has been well documented that Notch signaling is involved in liver regeneration. However, the exact molecular mechanism mediating this process is not fully elucidated. The current study aimed to investigate the role of Notch signaling regulating cell cycle in proliferating hepatocytes in liver regeneration after partial hepatectomy (PHx, 67% resection) and the related molecular mechanism. METHODS Partial hepatectomy was performed in Sprague Dawley rats, and remnant livers were harvested 0, 1, 3, 5, and 7 days after operation, and primary hepatocytes were isolated to investigate the molecular mechanism. RESULTS Notch signaling activation and hepatocyte proliferation were significantly increased after PHx, while treatment with FLI-06, the inhibitor of γ-secreting enzyme, blocked these trends. Besides, inhibition of Notch signaling led to dysregulation of cell cycle and cell-cycle components. Furthermore, Akti-1/2 (a selective Akt inhibitor) and PX-478 (a selective Hif-1α inhibitor) inhibited hepatocyte proliferation and liver regeneration after PHx, and the effect of downstream molecules activation by Jagged-1 (Notch-1 ligand) in hepatocytes was abolished by FLI-06, Akti-1/2, and PX-478. CONCLUSION The current study demonstrated for the first time that Notch signaling regulated cell cycle in proliferating hepatocytes involved in liver regeneration through NICD/Akt Akt/Hif-1α pathway.
Collapse
Affiliation(s)
- Fen Zhang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Jinglong Zhang
- Department of Cardiology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Xiao Li
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Bowei Li
- Department of 2nd Surgery, Baoji City Chinese Medicine Hospital, Baoji, Shanxi, China
| | - Kaishan Tao
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Shuqiang Yue
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| |
Collapse
|
35
|
Gad AM. Study on the influence of caffeic acid against sodium valproate-induced nephrotoxicity in rats. J Biochem Mol Toxicol 2018; 32:e22175. [PMID: 29968957 DOI: 10.1002/jbt.22175] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 05/22/2018] [Accepted: 06/15/2018] [Indexed: 02/05/2023]
Affiliation(s)
- Amany M. Gad
- Department of Pharmacology, National Organization for Drug Control and Research; Cairo, Egypt
| |
Collapse
|
36
|
Yang X, He C, Zhu L, Zhao W, Li S, Xia C, Xu C. Comparative Analysis of Regulatory Role of Notch Signaling Pathway in 8 Types Liver Cell During Liver Regeneration. Biochem Genet 2018; 57:1-19. [PMID: 29961162 DOI: 10.1007/s10528-018-9869-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 06/16/2018] [Indexed: 12/18/2022]
Abstract
Notch signaling is closely related to cell proliferation, cell apoptosis, cell fate decisions, DNA damage repair, and so on. However, the exactly regulatory mechanism of Notch signaling pathway in liver regeneration (LR) remains unclear. To reveal the role of Notch signaling pathway in rat liver regeneration, Ingenuity Pathway Analysis (IPA) software and related pathway database were firstly used to construct the Notch signaling pathway in this study. Next, eight type cells with high purity were obtained by Percoll density centrifugation and immunomagnetic beads sorting. Then, the expression profiles of Notch signaling pathway-related genes in eight type cells were checked by using Rat Genome 230 2.0 Array, and the results showed that the expression of 42 genes were significantly regulated. H-cluster results showed that the hepatic stellate cells are attributed to one cluster; hepatocyte cell, oval cell, sinusoidal endothelial cell, and Kupffer cell are clustered together; and biliary epithelial cell, pit cell, and dendritic cell are one cluster. IPA software and Expression analysis systematic explorer analysis indicated that Notch signaling pathway-related genes were involved in cell proliferation, apoptosis, cell cycle, DNA damage repair, etc. In conclusion, Notch signaling pathway might regulate various physiological activities of LR through multiple pathways.
Collapse
Affiliation(s)
- Xianguang Yang
- College of Life Science, Henan Normal University, No. 46, Constrution East Road, Xinxiang, 453007, Henan, China.,Co-constructing Key Laboratory for Cell Differentiation Regulation, Xinxiang, 453007, China
| | - Chuncui He
- College of Life Science, Henan Normal University, No. 46, Constrution East Road, Xinxiang, 453007, Henan, China.,Co-constructing Key Laboratory for Cell Differentiation Regulation, Xinxiang, 453007, China
| | - Lin Zhu
- College of Life Science, Henan Normal University, No. 46, Constrution East Road, Xinxiang, 453007, Henan, China.,Co-constructing Key Laboratory for Cell Differentiation Regulation, Xinxiang, 453007, China
| | - Weiming Zhao
- College of Life Science, Henan Normal University, No. 46, Constrution East Road, Xinxiang, 453007, Henan, China.,Co-constructing Key Laboratory for Cell Differentiation Regulation, Xinxiang, 453007, China
| | - Shuaihong Li
- College of Life Science, Henan Normal University, No. 46, Constrution East Road, Xinxiang, 453007, Henan, China.,Co-constructing Key Laboratory for Cell Differentiation Regulation, Xinxiang, 453007, China
| | - Cong Xia
- College of Life Science, Henan Normal University, No. 46, Constrution East Road, Xinxiang, 453007, Henan, China.,Co-constructing Key Laboratory for Cell Differentiation Regulation, Xinxiang, 453007, China
| | - Cunshuan Xu
- College of Life Science, Henan Normal University, No. 46, Constrution East Road, Xinxiang, 453007, Henan, China. .,Co-constructing Key Laboratory for Cell Differentiation Regulation, Xinxiang, 453007, China.
| |
Collapse
|
37
|
Doffou M, Adams G, Bowen WC, Paranjpe S, Parihar HS, Nguyen H, Michalopoulos GK, Bhave VS. Oct4 Is Crucial for Transdifferentiation of Hepatocytes to Biliary Epithelial Cells in an In Vitro Organoid Culture Model. Gene Expr 2018; 18:51-62. [PMID: 29212575 PMCID: PMC5885146 DOI: 10.3727/105221617x15124876321401] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Hepatocyte to biliary transdifferentiation has been documented in various models of bile duct injury. In this process, mature hepatocytes transform into mature biliary epithelial cells by acquiring biliary phenotypic markers. Several signaling pathways including PI3 kinase, Notch, Hes1, Sox9, and Hippo are shown to be involved in the process. However, whether Oct4 is involved in hepatocyte to biliary transdifferentiation is unknown. We investigated the role of Oct4 in hepatocyte to biliary transdifferentiation utilizing an in vitro organoid culture system as a model of transdifferentiation. Oct4 was inhibited using adenovirus containing Oct4 shRNA. Hepatocyte-specific HNF-4α and biliary-specific HNF-1β and CK19 expression were assessed to gauge the extent of transdifferentiation. Oct4 was induced during hepatocyte to biliary transdifferentiation. Oct4 inhibition significantly downregulated the appearance of biliary cells from hepatocytes. This was accompanied by a significant downregulation of signaling pathways including Notch, Sox9, and Hippo. Our findings suggest that Oct4 is crucial for hepatocyte to biliary transdifferentiation and maturation and that it acts upstream of Notch, Sox9, and Hippo signaling in this model. This finding identifies new signaling through Oct4 in plasticity between hepatocytes and biliary epithelial cells, which can be potentially utilized to identify new strategies in chronic biliary diseases.
Collapse
Affiliation(s)
- Mboya Doffou
- *Department of Pharmaceutical Sciences, Philadelphia College of Osteopathic Medicine School of Pharmacy, Suwanee, GA, USA
| | - George Adams
- *Department of Pharmaceutical Sciences, Philadelphia College of Osteopathic Medicine School of Pharmacy, Suwanee, GA, USA
| | - William C. Bowen
- †Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Shirish Paranjpe
- †Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Harish S. Parihar
- ‡Department of Pharmacy Practice, Philadelphia College of Osteopathic Medicine School of Pharmacy, Suwanee, GA, USA
| | - Huy Nguyen
- *Department of Pharmaceutical Sciences, Philadelphia College of Osteopathic Medicine School of Pharmacy, Suwanee, GA, USA
| | | | - Vishakha S. Bhave
- *Department of Pharmaceutical Sciences, Philadelphia College of Osteopathic Medicine School of Pharmacy, Suwanee, GA, USA
| |
Collapse
|
38
|
Abstract
Liver injury after experimental acetaminophen treatment is mediated both by direct hepatocyte injury through a P450-generated toxic metabolite and indirectly by activated liver Kupffer cells and neutrophils. This study was designed to investigate the role of Notch signaling in the regulation of innate immune responses in acetaminophen (APAP)-induced liver injury. Using a mouse model of APAP-induced liver injury, wild-type (WT) and toll-like receptor 4 knockout (TLR4 KO) mice were injected intraperitoneally with APAP or PBS. Some animals were injected with γ-secretase inhibitor DAPT or DMSO vehicle. For the in vitro study, bone marrow-derived macrophages (BMMs) were transfected with Notch1 siRNA, TLR4 siRNA, and non-specific (NS) siRNA and stimulated with LPS. Indeed, paracetamol/acetaminophen-induced liver damage was worse after Notch blockade with DAPT in wild-type mice, which was accompanied by significantly increased ALT levels, diminished hairy and enhancer of split-1 (Hes1), and phosphorylated Stat3 and Akt but enhanced high mobility group box 1 (HMGB1), TLR4, NF-κB, and NLRP3 activation after APAP challenge. Mice receiving DAPT increased macrophage and neutrophil accumulation and hepatocellular apoptosis. However, TLR4 KO mice that received DAPT reduced APAP-induced liver damage and NF-κB, NLRP3, and cleaved caspase-1 activation. BMMs transfected with Notch1 siRNA reduced Hes1 and phosphorylated Stat3 and Akt but augmented HMGB1, TLR4, NF-κB, and NLRP3. Furthermore, TLR4 siRNA knockdown resulted in decreased NF-κB and NLRP3 and cleaved caspase-1 and IL-1β levels following LPS stimulation. These results demonstrate that Notch signaling regulates innate NLRP3 inflammasome activation through regulation of HMGB1/TLR4/NF-κB activation in APAP-induced liver injury. Our novel findings underscore the critical role of the Notch1-Hes1 signaling cascade in the regulation of innate immunity in APAP-triggered liver inflammation. This might imply a novel therapeutic potential for the drug-induced damage-associated lethal hepatitis.
Collapse
|
39
|
Lu L, Yue S, Jiang L, Li C, Zhu Q, Ke M, Lu H, Wang X, Busuttil RW, Ying QL, Kupiec-Weglinski JW, Ke B. Myeloid Notch1 deficiency activates the RhoA/ROCK pathway and aggravates hepatocellular damage in mouse ischemic livers. Hepatology 2018; 67:1041-1055. [PMID: 29024000 PMCID: PMC5826840 DOI: 10.1002/hep.29593] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 09/14/2017] [Accepted: 10/09/2017] [Indexed: 12/16/2022]
Abstract
UNLABELLED Notch signaling plays an emerging role in the regulation of immune cell development and function during inflammatory response. Activation of the ras homolog gene family member A/Rho-associated protein kinase (ROCK) pathway promotes leukocyte accumulation in tissue injury. However, it remains unknown whether Notch signaling regulates ras homolog gene family member A/ROCK-mediated immune responses in liver ischemia and reperfusion (IR) injury. This study investigated intracellular signaling pathways regulated by Notch receptors in the IR-stressed liver and in vitro. In a mouse model of IR-induced liver inflammatory injury, we found that mice with myeloid-specific Notch1 knockout showed aggravated hepatocellular damage, with increased serum alanine aminotransferase levels, hepatocellular apoptosis, macrophage/neutrophil trafficking, and proinflammatory mediators compared to Notch1-proficient controls. Unlike in the controls, myeloid Notch1 ablation diminished hairy and enhancer of split-1 (Hes1) and augmented c-Jun N-terminal kinase (JNK)/stress-activated protein kinase-associated protein 1 (JSAP1), JNK, ROCK1, and phosphatase and tensin homolog (PTEN) activation in ischemic livers. Disruption of JSAP1 in myeloid-specific Notch1 knockout livers improved hepatocellular function and reduced JNK, ROCK1, PTEN, and toll-like receptor 4 activation. Moreover, ROCK1 knockdown inhibited PTEN and promoted Akt, leading to depressed toll-like receptor 4. In parallel in vitro studies, transfection of lentivirus-expressing Notch1 intracellular domain promoted Hes1 and inhibited JSAP1 in lipopolysaccharide-stimulated bone marrow-derived macrophages. Hes1 deletion enhanced JSAP1/JNK activation, whereas clustered regularly interspaced short palindromic repeats/CRISPR-associated protein 9-mediated JSAP1 knockout diminished ROCK1/PTEN and toll-like receptor 4 signaling. CONCLUSION Myeloid Notch1 deficiency activates the ras homolog gene family member A/ROCK pathway and exacerbates hepatocellular injury by inhibiting transcriptional repressor Hes1 and inducing scaffold protein JSAP1 in IR-triggered liver inflammation; our findings underscore the crucial role of the Notch-Hes1 axis as a novel regulator of innate immunity-mediated inflammation and imply the therapeutic potential for the management of organ IR injury in transplant recipients. (Hepatology 2018;67:1041-1055).
Collapse
Affiliation(s)
- Ling Lu
- Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing, China,The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Shi Yue
- The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA,Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research at USC, Department of Stem Cell Biology & Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Longfeng Jiang
- Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing, China,The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Changyong Li
- The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Qiang Zhu
- Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing, China,The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Michael Ke
- The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Hao Lu
- Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Xuehao Wang
- Liver Transplantation Center, First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Ronald W. Busuttil
- The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Qi-Long Ying
- Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research at USC, Department of Stem Cell Biology & Regenerative Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Jerzy W. Kupiec-Weglinski
- The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Bibo Ke
- The Dumont-UCLA Transplant Center, Division of Liver and Pancreas Transplantation, Department of Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| |
Collapse
|
40
|
Jiang S, Zhao XC, Jiao B, Yue ZJ, Yu ZB. Simulated microgravity hampers Notch signaling in the fight against myocardial ischemia‑reperfusion injury. Mol Med Rep 2018; 17:5150-5158. [PMID: 29393447 PMCID: PMC5865980 DOI: 10.3892/mmr.2018.8489] [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: 04/25/2017] [Accepted: 10/23/2017] [Indexed: 11/06/2022] Open
Abstract
The gravitational field is an important determinant of cardiovascular function. Exposure to microgravity during spaceflight may lead to a series of maladaptive alterations in the cardiovascular system. The authors have previously demonstrated that microgravity can increase the susceptibility to myocardial ischemia‑reperfusion (IR) injury under simulated microgravity. Although Notch1 signaling protects against myocardial IR injury, whether Notch1 protects against myocardial IR injury under simulated weightlessness remains unknown. The present study is designed to investigate the role of the Notch1 receptor in myocardial IR injury under simulated weightlessness. The differences in Notch signaling expression and myocardial infarct size following myocardial IR were compared between normal rats and tail‑suspended rats that were kept in 30˚ head‑down tilt and hindlimb unloading position. The data revealed low expression levels of Notch1 receptor and its endogenous ligand Jagged1 in normal adult rat hearts. However, significantly higher expression of Notch1 was observed in the border zone compared with the infarcted area and the remote zone following myocardial IR. Notch1 expression was notably reduced in the infarcted hearts of tail‑suspended rats compared with the control group. Conversely, the myocardial infarct size was significantly increased in tail‑suspended rats compared with the control rats. In conclusion, these data suggested that the proper function of Notch signaling may be hampered under simulated microgravity.
Collapse
Affiliation(s)
- Shuai Jiang
- Department of Aerospace Physiology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Xing-Cheng Zhao
- Department of Aerospace Physiology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Bo Jiao
- Department of Aerospace Physiology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Zhi-Jie Yue
- Department of Aerospace Physiology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Zhi-Bin Yu
- Department of Aerospace Physiology, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| |
Collapse
|
41
|
Xu L, Gu L, Tao X, Xu Y, Qi Y, Yin L, Han X, Peng J. Effect of dioscin on promoting liver regeneration via activating Notch1/Jagged1 signal pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2018; 38:107-117. [PMID: 29425642 DOI: 10.1016/j.phymed.2017.11.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Revised: 10/20/2017] [Accepted: 11/12/2017] [Indexed: 06/08/2023]
Abstract
BACKGROUND Development of novel candidates to promote liver regeneration is critical important after partial hepatectomy (PH). Dioscin, a natural product, shows potent effect on liver protection in our previous works. PURPOSE This work aimed to investigate the effect and underlying mechanisms of dioscin on liver regeneration. METHODS The promoting proliferation effects of dioscin on mouse hepatocytem AML12 cells, rat primary hepatocytes, rats and mice after 70% PH were evaluated. RESULTS Dioscin significantly promoted proliferation of rat primary hepatocytes and AML12 cells through MTT, BrdU and PCNA staining assays. Meanwhile, dioscin rapidly recovered the liver to body weight ratios, declined ALT and AST levels, and relieved hepatocytes necrosis compared with 70% PH operation groups in rats and mice. Mechanistic test showed that dioscin significantly increased Notch1 and Jagged1 levels, and accelerated γ-secretase activity by up-regulating PS1 expression, leading to nuclear translocation of Notch1 intracellular domain (NICD1). Subsequently, the significant activation of Notch-dependent target genes (Hey1, Hes1, EGFR, VEGF), and cell-cycle regulatory proteins (CyclinD1, CyclinE1, CDK4 and CDK2) were all recognized. In addition, these results were further confirmed by Notch1 siRNA silencing and inhibition of γ-secretase by DAPT (a well-characterized γ-secretase inhibitor) in vitro. CONCLUSIONS Dioscin, as a novel efficient γ-secretase activator, NICD1 nucleus translocation promoter and cell cycle regulator, markedly activated Notch1/Jagged1 pathway to promote hepato-proliferation. Our findings provide novel insights into dioscin as a natural product with facilitating liver regeneration after PH.
Collapse
Affiliation(s)
- Lina Xu
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Lina Gu
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Xufeng Tao
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Youwei Xu
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Yan Qi
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Lianhong Yin
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Xu Han
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China
| | - Jinyong Peng
- College of Pharmacy, Dalian Medical University, Western 9 Lvshunnan Road, Dalian 116044, China.
| |
Collapse
|
42
|
Siebel C, Lendahl U. Notch Signaling in Development, Tissue Homeostasis, and Disease. Physiol Rev 2017; 97:1235-1294. [PMID: 28794168 DOI: 10.1152/physrev.00005.2017] [Citation(s) in RCA: 598] [Impact Index Per Article: 85.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 05/19/2017] [Accepted: 05/26/2017] [Indexed: 02/07/2023] Open
Abstract
Notch signaling is an evolutionarily highly conserved signaling mechanism, but in contrast to signaling pathways such as Wnt, Sonic Hedgehog, and BMP/TGF-β, Notch signaling occurs via cell-cell communication, where transmembrane ligands on one cell activate transmembrane receptors on a juxtaposed cell. Originally discovered through mutations in Drosophila more than 100 yr ago, and with the first Notch gene cloned more than 30 yr ago, we are still gaining new insights into the broad effects of Notch signaling in organisms across the metazoan spectrum and its requirement for normal development of most organs in the body. In this review, we provide an overview of the Notch signaling mechanism at the molecular level and discuss how the pathway, which is architecturally quite simple, is able to engage in the control of cell fates in a broad variety of cell types. We discuss the current understanding of how Notch signaling can become derailed, either by direct mutations or by aberrant regulation, and the expanding spectrum of diseases and cancers that is a consequence of Notch dysregulation. Finally, we explore the emerging field of Notch in the control of tissue homeostasis, with examples from skin, liver, lung, intestine, and the vasculature.
Collapse
Affiliation(s)
- Chris Siebel
- Department of Discovery Oncology, Genentech Inc., DNA Way, South San Francisco, California; and Department of Cell and Molecular Biology, Karolinska Institute, Stockholm, Sweden
| | - Urban Lendahl
- Department of Discovery Oncology, Genentech Inc., DNA Way, South San Francisco, California; and Department of Cell and Molecular Biology, Karolinska Institute, Stockholm, Sweden
| |
Collapse
|
43
|
Zagory JA, Dietz W, Park A, Fenlon M, Xu J, Utley S, Mavila N, Wang KS. Notch signaling promotes ductular reactions in biliary atresia. J Surg Res 2017; 215:250-256. [DOI: 10.1016/j.jss.2017.03.051] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 03/13/2017] [Accepted: 03/29/2017] [Indexed: 12/29/2022]
|
44
|
Wang XP, Zhou J, Han M, Chen CB, Zheng YT, He XS, Yuan XP. MicroRNA-34a regulates liver regeneration and the development of liver cancer in rats by targeting Notch signaling pathway. Oncotarget 2017; 8:13264-13276. [PMID: 28129650 PMCID: PMC5355094 DOI: 10.18632/oncotarget.14807] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 12/13/2016] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE This study aimed to investigate the role of microRNA-34a (miR-34a) in regulating liver regeneration (LR) and the development of liver cancer in rats by targeting Notch signaling pathway. METHODS Thirty male Sprague-Dawley (SD) rats were randomly assigned into partial hepatectomy (PH) group and sham hepatectomy (SH) group. Hematoxylin and eosin (HE) staining was used to observe the histological change in liver tissues. Enzyme-linked immunosorbent assay (ELISA) was used to measure the serum tumor necrosis factor α (TNF-α) and interleukin-6 (IL-6) levels. Dual-luciferase reporter gene assay was performed to examine whether miR-34a targeted Notch1 gene. Human liver cancer Huh7 cells were transfected and divided into blank, negative control (NC), miR-34a mimics and miR-34a inhibitors groups. MTT and flow cytometry were used to detect cell growth, and cell cycle and apoptosis, respectively. Quantitative real-time polymerase chain reaction (qRT-PCR) was applied detect to the expressions of miR-34a and Notch receptor mRNA. Western blotting was performed to detect the protein expressions of Notch receptors, P21, Bax, Bcl-2 and Bcl-xL. Tumor xenograft in nude mice was done to observe tumor formation in different groups. RESULTS Compared to the SH group, miR-34a expression in liver tissues in the PH group decreased first and then increased to the normal level during LR. In early stage of LR, the expressions of Notch receptors and miR-34a were negatively correlated. Compared to the blank and NC groups, the cell growth was inhibited, cell cycle was mainly arrested in the G2/M phase and cell apoptosis rate increased in the miR-34a mimics group. Moreover, the expressions of miR-34a, P21 and Bax were up-regulated, while the expressions of Notch receptors, and Bcl-2 and Bcl-xL were down-regulated in this group. Additionally, the tumor growth in the miR-34a mimics group was reduced. The miR-34a inhibitors group showed contrary tendencies. CONCLUSION Our study demonstrates that miR-34a regulated LR and the development of liver cancer by inhibiting Notch signaling pathway.
Collapse
Affiliation(s)
- Xiao-Ping Wang
- Third Division of Organ Transplant Center, The Eastern Hospital of The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510700, P. R. China
| | - Jian Zhou
- Third Division of Organ Transplant Center, The Eastern Hospital of The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510700, P. R. China
| | - Ming Han
- Third Division of Organ Transplant Center, The Eastern Hospital of The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510700, P. R. China
| | - Chuan-Bao Chen
- Third Division of Organ Transplant Center, The Eastern Hospital of The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510700, P. R. China
| | - Yi-Tao Zheng
- Third Division of Organ Transplant Center, The Eastern Hospital of The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510700, P. R. China
| | - Xiao-Shun He
- Third Division of Organ Transplant Center, The Eastern Hospital of The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510700, P. R. China
| | - Xiao-Peng Yuan
- Third Division of Organ Transplant Center, The Eastern Hospital of The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510700, P. R. China
| |
Collapse
|
45
|
Down-regulated notch signaling in arpe-19 cells Cultured on denuded human Amniotic membrane. ACTA ACUST UNITED AC 2017. [DOI: 10.22376/ijpbs.2017.8.1.b316-323] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
46
|
Notch signaling-mediated cell-to-cell interaction is dependent on E-cadherin adhesion in adult rat anterior pituitary. Cell Tissue Res 2016; 368:125-133. [DOI: 10.1007/s00441-016-2540-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 11/09/2016] [Indexed: 01/07/2023]
|
47
|
Gil-García B, Baladrón V. The complex role of NOTCH receptors and their ligands in the development of hepatoblastoma, cholangiocarcinoma and hepatocellular carcinoma. Biol Cell 2015; 108:29-40. [DOI: 10.1111/boc.201500029] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 11/24/2015] [Indexed: 12/12/2022]
Affiliation(s)
- Borja Gil-García
- Laboratory of Biochemistry and Molecular Biology; Department of Inorganic and Organic Chemistry and Biochemistry; Medical School/CRIB/Biomedicine Unit; University of Castilla-La Mancha (UCLM)/CSIC; 02008, Albacete Spain
| | - Victoriano Baladrón
- Laboratory of Biochemistry and Molecular Biology; Department of Inorganic and Organic Chemistry and Biochemistry; Medical School/CRIB/Biomedicine Unit; University of Castilla-La Mancha (UCLM)/CSIC; 02008, Albacete Spain
| |
Collapse
|
48
|
Wakabayashi N, Chartoumpekis DV, Kensler TW. Crosstalk between Nrf2 and Notch signaling. Free Radic Biol Med 2015; 88:158-167. [PMID: 26003520 PMCID: PMC4628857 DOI: 10.1016/j.freeradbiomed.2015.05.017] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 05/08/2015] [Accepted: 05/12/2015] [Indexed: 12/17/2022]
Abstract
The transcription factor Nrf2 (nuclear factor, erythroid derived 2, like 2) belongs to the CNC-bZip protein family, forming a transcriptosome with its direct heterodimer partner, sMaf, and co-factors such as CBP/p300. Nrf2 binds to one or more AREs (antioxidant response elements) that are located in the gene regulatory regions of the hundreds of Nrf2 target genes. The AREs are key enhancers that are activated in response to endogenous or exogenous stresses to maintain cellular and tissue homeostasis. Data emanating from gene expression microarray analyses comparing Nrf2-disrupted and wild-type mouse embryonic fibroblasts (MEF) showed that expression of Notch1 and Notch-signaling-related genes were decreased in Nrf2-disrupted cells. This observation triggered our research on Nrf2-Notch crosstalk. A functional ARE has been identified upstream of the Notch1 major transcription start site. Furthermore, an Rbpjκ binding site is conserved on the promoters of Nrf2 among animal species. Notch1 is one of the transmembrane Notch family receptors that drive Notch signaling, together with the Rbpjκ transcription factor. After canonically accepting ligands such as Jags and Deltas, the receptor undergoes cleavage to yield the Notch intracellular domain, which translocates to the nucleus. Recent studies using conditional knockout mice indicate that Notch1 as well as Notch2 plays an important role postnatally in liver development and in maintenance of hepatic function. In this review, we summarize current understanding of the role of reciprocal transcriptional regulation between Nrf2 and Notch in adult liver from studies using Nrf2, Keap1, and Notch1 genetically engineered mice.
Collapse
Affiliation(s)
- Nobunao Wakabayashi
- Department of Pharmacology & Chemical Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA.
| | - Dionysios V Chartoumpekis
- Department of Pharmacology & Chemical Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Thomas W Kensler
- Department of Pharmacology & Chemical Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA; Department of Environmental Health Science, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA
| |
Collapse
|
49
|
Zeng C, Xing R, Liu J, Xing F. Role of CSL-dependent and independent Notch signaling pathways in cell apoptosis. Apoptosis 2015; 21:1-12. [DOI: 10.1007/s10495-015-1188-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
50
|
Michalopoulos GK, Khan Z. Liver Stem Cells: Experimental Findings and Implications for Human Liver Disease. Gastroenterology 2015; 149:876-882. [PMID: 26278502 PMCID: PMC4584191 DOI: 10.1053/j.gastro.2015.08.004] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 08/08/2015] [Accepted: 08/10/2015] [Indexed: 02/07/2023]
Abstract
Evidence from human histopathology and experimental studies with rodents and zebrafish has shown that hepatocytes and cholangiocytes may function as facultative stem cells for each other in conditions of impaired regeneration. The interpretation of the findings derived from these studies has generated considerable discussion and some controversies. This review examines the evidence obtained from the different experimental models and considers implications that these studies may have for human liver disease.
Collapse
Affiliation(s)
| | - Zahida Khan
- Department of Pediatric Gastroenterology University of Pittsburgh School of Medicine
| |
Collapse
|