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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.
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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
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Tang N, Zhang J, Fu X, Xie W, Qiu Y. PP2Acα inhibits PFKFB2-induced glycolysis to promote termination of liver regeneration. Biochem Biophys Res Commun 2020; 526:1-7. [PMID: 32192773 DOI: 10.1016/j.bbrc.2020.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 03/03/2020] [Indexed: 01/17/2023]
Abstract
The mechanisms underlying the initiation and proliferation of liver regeneration (LR) has been extensively studied using the partial hepatectomy (PHx) model, while little is known about the termination of LR. PP2Acα (protein phosphatase 2 A catalytic subunit α isoform) is the catalytic subunit of protein phosphatase 2 A (PP2A), accounting for most of intracellular serine/threonine phosphatase activity. We have previously observed that termination of LR delayed in PP2Acα liver-specific knockout (LKO) mice after PHx. In our study, we used phospho explorer antibody array analysis to screen the potential phosphorylation targets of PP2Acα, and PP2Acα had a great influence on the hepatic phosphoproteomic signaling in the termination of LR after PHx. We then tested the phosphorylation changes and metabolic function of 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase-2 (PFKFB2), an isoform of the key glycolytic enzyme PFKFB, which was significantly regulated by PP2Acα knockout. PP2Acα knockout enhanced glycolysis in vivo and in vitro, while adenoviral-mediated RNAi of PFKFB2 reversed the extension of postoperative liver regeneration in KO mice along with the downregulation of glycolysis. Therefore, we demonstrated that PP2Acα liver-specific knockout regulated the hepatocytes glycolysis via activating PFKFB2, thus enhancing liver regeneration during the termination stage.
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Affiliation(s)
- Neng Tang
- The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Jingzi Zhang
- Medical School and Model Animal Research Center of Nanjing University, Nanjing, China
| | - Xiao Fu
- The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Weiqi Xie
- The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
| | - Yudong Qiu
- The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
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Zhang J, Tang N, Zhao Y, Zhao R, Fu X, Zhao D, Zhao Y, Huang L, Li C, Qiu Y, Xue B, Fang L. Global Phosphoproteomic Analysis Reveals Significant Metabolic Reprogramming in the Termination of Liver Regeneration in Mice. J Proteome Res 2020; 19:1788-1799. [PMID: 32105074 PMCID: PMC7205775 DOI: 10.1021/acs.jproteome.0c00028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Phosphorylation is crucial in regulating various biological processes. However, comprehensive phosphoproteomic profiling in the termination of liver regeneration (LR) is still missing. Here, we used Tandem Mass Tag (TMT) labeling coupled with phosphopeptide enrichment and two-dimensional (2D) liquid chromatography-mass spectrometry (LC-MS)/MS analysis to establish a global phosphoproteomic map in the liver of mice at day 5 after partial hepatectomy (PH). Altogether, 9731 phosphosites from 3443 proteins were identified and 7802 phosphosites from 2980 proteins were quantified. Motif analysis of the identified phosphosites revealed a diverse array of consensus sequences, suggesting that multiple kinase families including ERK/MAPK, PKA/PKC, CaMK-II, CKII, and CDK may be involved in the termination of LR. Functional clustering analysis of proteins with dysregulated phosphosites showed that they mainly participate in metabolic pathways, DNA replication, and tight junction. More importantly, the deletion of PP2Acα in the liver remarkably changes the overall phosphorylation profile, indicating its critical role in regulating the termination of LR. Finally, several differentially phosphorylated sites were validated by co-immunoprecipitation and Western blot. Taken together, our data unravel the first comprehensive phosphoproteomic map in the termination of LR in mice, which greatly expands our knowledge in the complicated regulation of this process and provides new directions for the treatment of liver cancer using liver resection.
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Affiliation(s)
- Jingzi Zhang
- Model Animal Research Center and Medical School of Nanjing University, Nanjing 210093, China
| | - Neng Tang
- Nanjing Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210093, China
| | - Yinjuan Zhao
- Collaborative Innovation Center of Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China
| | - Ruoyu Zhao
- Model Animal Research Center and Medical School of Nanjing University, Nanjing 210093, China
| | - Xiao Fu
- Nanjing Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210093, China
| | - Dandan Zhao
- Model Animal Research Center and Medical School of Nanjing University, Nanjing 210093, China
| | - Yue Zhao
- Model Animal Research Center and Medical School of Nanjing University, Nanjing 210093, China
| | - Lan Huang
- Department of Physiology and Biophysics, University of California, Irvine, CA 92697, USA
| | - Chaojun Li
- Model Animal Research Center and Medical School of Nanjing University, Nanjing 210093, China
| | - Yudong Qiu
- Nanjing Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210093, China
| | - Bin Xue
- Core Laboratory, Sir Run Run Hospital, Nanjing Medical University, Nanjing, 211166, China
| | - Lei Fang
- Model Animal Research Center and Medical School of Nanjing University, Nanjing 210093, China
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Yang X, Yang C, Qiu Y, Shen S, Kong J, Wang W. A preliminary study of associating liver partition and portal vein ligation for staged hepatectomy in a rat model of liver cirrhosis. Exp Ther Med 2019; 18:1203-1211. [PMID: 31316615 PMCID: PMC6601136 DOI: 10.3892/etm.2019.7688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 04/12/2019] [Indexed: 02/05/2023] Open
Abstract
Associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) in a rat model of liver cirrhosis has not, to the best of our knowledge, been previously investigated. The present study therefore aimed to establish a model of ALPPS in cirrhotic rats and to assess liver regeneration. Rats were randomly divided into an ALPPS group with carbon tetrachloride-induced cirrhosis (group A) and a normal liver (group B). Rat weight, cytokine levels, biochemical parameters and histopathology were assessed 1, 2, 3, 7 and 14 days after ALPPS. Higher aspartate aminotransferase and alanine aminotransferase levels were detected in group A on the first postoperative day. On the first, second and third days, hepatocyte proliferation rate was higher in group B than in group A. After 3 days, hepatocyte proliferation rate in group B began to decrease, but the rate in group A continued to increase until the 14th day. Higher levels of hepatocyte growth factor, interleukin-6 and tumor necrosis factor-α were detected in group A compared with group B, but the differences were not significant. The present study demonstrated that ALPPS promoted liver regeneration in a rat model of cirrhosis, but significantly impaired liver function. Compared with the ALPPS model, group B exhibited a delayed peak of proliferation. The mechanism of liver regeneration induced by ALPPS in cirrhotic rats may be associated with increased cytokine levels.
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Affiliation(s)
- Xianwei Yang
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Chuang Yang
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China.,Department of Hepatobiliary and Pancreatic Surgery, The Third Hospital of Mianyang, Sichuan Mental Health Center, Mianyang, Sichuan 621000, P.R. China
| | - Yiwen Qiu
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Shu Shen
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Junjie Kong
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Wentao Wang
- Department of Liver Surgery and Liver Transplantation Center, West China Hospital of Sichuan University, Chengdu, Sichuan 610041, P.R. China
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Rao S, Zaidi S, Banerjee J, Jogunoori W, Sebastian R, Mishra B, Nguyen BN, Wu RC, White J, Deng C, Amdur R, Li S, Mishra L. Transforming growth factor-β in liver cancer stem cells and regeneration. Hepatol Commun 2017; 1:477-493. [PMID: 29404474 PMCID: PMC5678904 DOI: 10.1002/hep4.1062] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 04/27/2017] [Accepted: 06/01/2017] [Indexed: 12/11/2022] Open
Abstract
Cancer stem cells have established mechanisms that contribute to tumor heterogeneity as well as resistance to therapy. Over 40% of hepatocellular carcinomas (HCCs) are considered to be clonal and arise from a stem-like/cancer stem cell. Moreover, HCC is the second leading cause of cancer death worldwide, and an improved understanding of cancer stem cells and targeting these in this cancer are urgently needed. Multiple studies have revealed etiological patterns and multiple genes/pathways signifying initiation and progression of HCC; however, unlike the transforming growth factor β (TGF-β) pathway, loss of p53 and/or activation of β-catenin do not spontaneously drive HCC in animal models. Despite many advances in cancer genetics that include identifying the dominant role of TGF-β signaling in gastrointestinal cancers, we have not reached an integrated view of genetic mutations, copy number changes, driver pathways, and animal models that support effective targeted therapies for these common and lethal cancers. Moreover, pathways involved in stem cell transformation into gastrointestinal cancers remain largely undefined. Identifying the key mechanisms and developing models that reflect the human disease can lead to effective new treatment strategies. In this review, we dissect the evidence obtained from mouse and human liver regeneration, and mouse genetics, to provide insight into the role of TGF-β in regulating the cancer stem cell niche. (Hepatology Communications 2017;1:477-493).
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Affiliation(s)
- Shuyun Rao
- Center for Translational Medicine Department of Surgery, George Washington University Washington DC
| | - Sobia Zaidi
- Center for Translational Medicine Department of Surgery, George Washington University Washington DC
| | - Jaideep Banerjee
- Center for Translational Medicine Department of Surgery, George Washington University Washington DC
| | - Wilma Jogunoori
- Center for Translational Medicine Department of Surgery, George Washington University Washington DC
| | - Raul Sebastian
- Center for Translational Medicine Department of Surgery, George Washington University Washington DC
| | - Bibhuti Mishra
- Center for Translational Medicine Department of Surgery, George Washington University Washington DC.,Institute for Clinical Research, Veterans Affairs Medical Center Washington DC
| | - Bao-Ngoc Nguyen
- Center for Translational Medicine Department of Surgery, George Washington University Washington DC
| | - Ray-Chang Wu
- Department of Biochemistry and Molecular Medicine George Washington University Washington DC
| | - Jon White
- Institute for Clinical Research, Veterans Affairs Medical Center Washington DC
| | - Chuxia Deng
- Center for Translational Medicine Department of Surgery, George Washington University Washington DC.,Health Sciences University of Macau Taipa Macau China
| | - Richard Amdur
- Center for Translational Medicine Department of Surgery, George Washington University Washington DC
| | - Shulin Li
- Department of Pediatrics The University of Texas MD Anderson Cancer Center Houston TX
| | - Lopa Mishra
- Center for Translational Medicine Department of Surgery, George Washington University Washington DC.,Institute for Clinical Research, Veterans Affairs Medical Center Washington DC
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Wen X, Huan H, Wang X, Chen X, Wu L, Zhang Y, Liu W, Bie P, Xia F. Sympathetic neurotransmitters promote the process of recellularization in decellularized liver matrix via activating the IL-6/Stat3 pathway. ACTA ACUST UNITED AC 2016; 11:065007. [PMID: 27811394 DOI: 10.1088/1748-6041/11/6/065007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Recellularized liver, as an approach for hepatic tissue engineering, is an effective alternative to orthotopic liver transplantation for end-stage hepatic failure. When compared with normal liver, recellularized liver has a disparity in hepatocyte viability and function, owing to the difficulty of fully simulating the microenvironment of liver. Although the sympathetic nervous system (SNS) is considered an important constituent of liver function, few studies have examined the effect of the SNS on hepatic tissue engineering. It is imperative to explore the regulation of the SNS on a tissue-like configuration to obtain an intact recellularized liver with better hepatic function. We have observed that various subtypes of adrenergic receptors (ARs) are expressed on the hepatocyte membrane. Salbutamol, an agonist of β2-AR, promoted cell proliferation, albumin secretion and urea synthesis in the recellularized liver. Cytokines were screened in isoprenaline/salbutamol-treated recellularized liver, and the expression of IL-6 was significantly increased. Isoprenaline or salbutamol especially promoted the expression of Stat 3 and phosphorylated Stat 3, contributing to the activation of IL-6/Stat 3 signalling in promoting hepatocyte proliferation and recellularized liver function. This study suggests that activation of β2-AR accelerated hepatocyte proliferation and improved recellularized liver function by mediating the IL-6/Stat 3 signalling pathway, indicating that nervous system regulation may be an essential component contributing to the complexity of recellularized liver in tissue engineering.
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Affiliation(s)
- Xudong Wen
- Institute of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, Peoples's Republic of China. General Surgery Center, Chengdu Military General Hospital, Chengdu, Sichuan Province 610083, Peoples's Republic of China. These authors contributed equally to this work
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Niu L, Cui X, Qi Y, Xie D, Wu Q, Chen X, Ge J, Liu Z. Involvement of TGF-β1/Smad3 Signaling in Carbon Tetrachloride-Induced Acute Liver Injury in Mice. PLoS One 2016; 11:e0156090. [PMID: 27224286 PMCID: PMC4880333 DOI: 10.1371/journal.pone.0156090] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 05/09/2016] [Indexed: 12/17/2022] Open
Abstract
Transforming growth factor-beta1 (TGF-β1) is a major factor in pathogenesis of chronic hepatic injury. Carbon tetrachloride (CCl4) is a liver toxicant, and CCl4-induced liver injury in mouse is a classical animal model of chemical liver injury. However, it is still unclear whether TGF-β1 is involved in the process of CCl4-induced acute chemical liver injury. The present study aimed to evaluate the role of TGF-β1 and its signaling molecule Smad3 in the acute liver injury induce by CCl4. The results showed that CCl4 induced acute liver injury in mice effectively confirmed by H&E staining of liver tissues, and levels of not only liver injury markers serum ALT and AST, but also serum TGF-β1 were elevated significantly in CCl4-treated mice, compared with the control mice treated with olive oil. Our data further revealed that TGF-β1 levels in hepatic tissue homogenate increased significantly, and type II receptor of TGF-β (TβRII) and signaling molecules Smad2, 3, mRNA expressions and Smad3 and phospho-Smad3 protein levels also increased obviously in livers of CCl4-treated mice. To clarify the effect of the elevated TGF-β1/Smad3 signaling on CCl4-induced acute liver injury, Smad3 in mouse liver was overexpressed in vivo by tail vein injection of Smad3-expressing plasmids. Upon CCl4 treatment, Smad3-overexpressing mice showed more severe liver injury identified by H&E staining of liver tissues and higher serum ALT and AST levels. Simultaneously, we found that Smad3-overexpressing mice treated with CCl4 showed more macrophages and neutrophils infiltration in liver and inflammatory cytokines IL-1β and IL-6 levels increment in serum when compared with those in control mice treated with CCl4. Moreover, the results showed that the apoptosis of hepatocytes increased significantly, and apoptosis-associated proteins Bax, cytochrome C and the cleaved caspase 3 expressions were up-regulated in CCl4-treated Smad3-overexpressing mice as well. These results suggested that TGF-β1/Smad3 signaling was activated during CCl4-induced acute liver injury in mice, and Smad3 overexpression aggravated acute liver injury by promoting inflammatory cells infiltration, inflammatory cytokines release and hepatocytes apoptosis. In conclusion, the activation of TGF-β signaling contributes to the CCl4-induced acute liver injury. Thus, TGF-β1/Smad3 may serve as a potential target for acute liver injury therapy.
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Affiliation(s)
- Liman Niu
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Xueling Cui
- Department of Genetics, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Yan Qi
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Dongxue Xie
- Department of Genetics, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Qian Wu
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Xinxin Chen
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Jingyan Ge
- Department of Physiology, College of Basic Medical Sciences, Jilin University, Changchun, China
- * E-mail: (ZL); (JG)
| | - Zhonghui Liu
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, China
- * E-mail: (ZL); (JG)
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