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Yamashita J, Kimoto A, Teraoka S, Hiraoka Y, Takeda D, Kakei Y, Shigeoka M, Hasegawa T, Akashi M. Photodynamic therapy with verteporfin accelerates apoptotic bleb formation in human ameloblastoma. Oral Dis 2024; 30:3261-3271. [PMID: 37890051 DOI: 10.1111/odi.14775] [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: 06/02/2023] [Revised: 09/11/2023] [Accepted: 10/05/2023] [Indexed: 10/29/2023]
Abstract
OBJECTIVE Although benign, ameloblastoma is a locally aggressive lesion in some patients and the development of additional treatments is needed. Verteporfin (VP) is a photosensitizer exhibiting considerable photocytotoxicity in various tumor cells. We aimed to investigate the effects of verteporfin photodynamic therapy (VP PDT) on ameloblastoma. METHODS Eighteen patients who underwent surgery for ameloblastoma were randomly selected. We performed an immunohistochemical assessment to investigate the expression of low-density lipoprotein receptor (LDLR) and Yes-associated protein (YAP), targets of VP, in human ameloblastoma tissues and cultured human ameloblastoma cell line (HAM1). The effect of VP PDT on cell proliferation and apoptosis in HAM1 was analyzed. RESULTS The expression of LDLR and YAP were detected in human ameloblastoma tissues and HAM1. LDLR expression was significantly higher in patients who had previously undergone surgery than in patients who were receiving it for the first time. The cytotoxic effect of the combination of low-concentration VP administration and laser irradiation was comparable to high-concentration VP administration with and without laser irradiation. The addition of laser irradiation to VP administration significantly accelerated apoptotic bleb formation compared with VP administration alone. CONCLUSION VP PDT has the potential to become an additional treatment for large-sized ameloblastoma.
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Affiliation(s)
- Junya Yamashita
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Akira Kimoto
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shun Teraoka
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yujiro Hiraoka
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Daisuke Takeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yasumasa Kakei
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Manabu Shigeoka
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
- Division of Pathology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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Hu Y, Wang R, Liu J, Wang Y, Dong J. Lipid droplet deposition in the regenerating liver: A promoter, inhibitor, or bystander? Hepatol Commun 2023; 7:e0267. [PMID: 37708445 PMCID: PMC10503682 DOI: 10.1097/hc9.0000000000000267] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 07/29/2023] [Indexed: 09/16/2023] Open
Abstract
Liver regeneration (LR) is a complex process involving intricate networks of cellular connections, cytokines, and growth factors. During the early stages of LR, hepatocytes accumulate lipids, primarily triacylglycerol, and cholesterol esters, in the lipid droplets. Although it is widely accepted that this phenomenon contributes to LR, the impact of lipid droplet deposition on LR remains a matter of debate. Some studies have suggested that lipid droplet deposition has no effect or may even be detrimental to LR. This review article focuses on transient regeneration-associated steatosis and its relationship with the liver regenerative response.
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Affiliation(s)
- Yuelei Hu
- Department of Hepatobiliary and Pancreatic Surgery, The First Hospital of Jilin University, Jilin University, Changchun, China
| | - Ruilin Wang
- Department of Cadre’s Wards Ultrasound Diagnostics. Ultrasound Diagnostic Center, The First Hospital of Jilin University, Jilin University, Changchun, China
| | - Juan Liu
- Research Unit of Precision Hepatobiliary Surgery Paradigm, Chinese Academy of Medical Sciences, Beijing, China
- Hepatopancreatobiliary Center, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
- Institute for Organ Transplant and Bionic Medicine, Tsinghua University, Beijing, China
- Clinical Translational Science Center, Beijing Tsinghua Changgung Hospital, Tsinghua University, Beijing, China
| | - Yunfang Wang
- Research Unit of Precision Hepatobiliary Surgery Paradigm, Chinese Academy of Medical Sciences, Beijing, China
- Hepatopancreatobiliary Center, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
- Institute for Organ Transplant and Bionic Medicine, Tsinghua University, Beijing, China
- Clinical Translational Science Center, Beijing Tsinghua Changgung Hospital, Tsinghua University, Beijing, China
| | - Jiahong Dong
- Department of Hepatobiliary and Pancreatic Surgery, The First Hospital of Jilin University, Jilin University, Changchun, China
- Research Unit of Precision Hepatobiliary Surgery Paradigm, Chinese Academy of Medical Sciences, Beijing, China
- Hepatopancreatobiliary Center, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, China
- Institute for Organ Transplant and Bionic Medicine, Tsinghua University, Beijing, China
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3
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Jiang L, Gai X, Ni Y, Qiang T, Zhang Y, Kang X, Xiong K, Wang J. Folic acid protects against tuberculosis-drug-induced liver injury in rats and its potential mechanism by metabolomics. J Nutr Biochem 2023; 112:109214. [PMID: 36370928 DOI: 10.1016/j.jnutbio.2022.109214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 10/20/2022] [Accepted: 11/03/2022] [Indexed: 11/11/2022]
Abstract
Observational study indicated that folic acid (FA) supplementation may protect against tuberculosis-drug-induced liver injury (TBLI). The aim is to investigate the effect and mechanism of FA on TBLI in rats. Liver injury was induced by a daily gavage of isoniazid (INH) and rifampicin (RIF) in the model and FA groups. Rats in the FA group were also treated with 2.5 mg/kg body weight FA. Rats in the control group were not treated. Eight rats were used in each group. The severity of liver injury was measured by the serum levels of hepatic enzymes and histological score. The metabolites in serum and liver tissues were analyzed by HPLC-Q-TOF-MS/MS. FA treatment significantly reduced alanine aminotransferase and liver necrosis. Seventy-nine differential metabolites in the serum and liver tissues were identified among the three groups. N-acylethanolamines, INH and RIF metabolites, phosphatidylcholines, lysophosphatidylcholines, monoglycerides, diglycerides and bile acids were regulated by FA treatment, involving key metabolic pathways, such as N-acylethanolamine metabolism, INH and RIF metabolism, liver regeneration, inflammation alleviation and bile acid metabolism. RT-PCR and western blotting results confirmed the altered N-acylethanolamine metabolism and improved drug metabolism by FA. In conclusion, FA was protective against TBLI, which may be related to the regulation of N-acylethanolamine metabolism and drug detoxification by FA.
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Affiliation(s)
- Lan Jiang
- Institute of Nutrition and Health, School of Public Health, Qingdao University, Qingdao, Shandong, China
| | - Xiaochun Gai
- Institute of Nutrition and Health, School of Public Health, Qingdao University, Qingdao, Shandong, China; School of Public Health, University of Michigan, Ann Arbor, Michigan, United States
| | - Ya Ni
- Institute of Nutrition and Health, School of Public Health, Qingdao University, Qingdao, Shandong, China
| | - Ting Qiang
- Institute of Nutrition and Health, School of Public Health, Qingdao University, Qingdao, Shandong, China
| | - Yingying Zhang
- Institute of Nutrition and Health, School of Public Health, Qingdao University, Qingdao, Shandong, China
| | - Xiao Kang
- Institute of Nutrition and Health, School of Public Health, Qingdao University, Qingdao, Shandong, China
| | - Ke Xiong
- Institute of Nutrition and Health, School of Public Health, Qingdao University, Qingdao, Shandong, China.
| | - Jinyu Wang
- Institute of Nutrition and Health, School of Public Health, Qingdao University, Qingdao, Shandong, China.
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4
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Wong LL, Bruxvoort CG, Cejda NI, Delaney MR, Otero JR, Forsthoefel DJ. Intestine-enriched apolipoprotein b orthologs are required for stem cell progeny differentiation and regeneration in planarians. Nat Commun 2022; 13:3803. [PMID: 35778403 PMCID: PMC9249923 DOI: 10.1038/s41467-022-31385-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 06/16/2022] [Indexed: 02/08/2023] Open
Abstract
Lipid metabolism plays an instructive role in regulating stem cell state and differentiation. However, the roles of lipid mobilization and utilization in stem cell-driven regeneration are unclear. Planarian flatworms readily restore missing tissue due to injury-induced activation of pluripotent somatic stem cells called neoblasts. Here, we identify two intestine-enriched orthologs of apolipoprotein b, apob-1 and apob-2, which mediate transport of neutral lipid stores from the intestine to target tissues including neoblasts, and are required for tissue homeostasis and regeneration. Inhibition of apob function by RNAi causes head regression and lysis in uninjured animals, and delays body axis re-establishment and regeneration of multiple organs in amputated fragments. Furthermore, apob RNAi causes expansion of the population of differentiating neoblast progeny and dysregulates expression of genes enriched in differentiating and mature cells in eight major cell type lineages. We conclude that intestine-derived lipids serve as a source of metabolites required for neoblast progeny differentiation.
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Affiliation(s)
- Lily L Wong
- Genes and Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Christina G Bruxvoort
- Genes and Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
- Arthritis and Clinical Immunology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
- Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
- Department of Veteran Affairs Medical Center - Research Services, Oklahoma City, OK, USA
| | - Nicholas I Cejda
- Genes and Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
- Center for Biomedical Data Science, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Matthew R Delaney
- Genes and Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Jannette Rodriguez Otero
- Howard Hughes Medical Institute, Department of Cell and Developmental Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
- Department of Education, Universidad Interamericana de Puerto Rico, San Juan, Puerto Rico, USA
| | - David J Forsthoefel
- Genes and Human Disease Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA.
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
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5
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Caldez MJ, Bjorklund M, Kaldis P. Cell cycle regulation in NAFLD: when imbalanced metabolism limits cell division. Hepatol Int 2020; 14:463-474. [PMID: 32578019 PMCID: PMC7366567 DOI: 10.1007/s12072-020-10066-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 06/06/2020] [Indexed: 12/12/2022]
Abstract
Cell division is essential for organismal growth and tissue homeostasis. It is exceptionally significant in tissues chronically exposed to intrinsic and external damage, like the liver. After decades of studying the regulation of cell cycle by extracellular signals, there are still gaps in our knowledge on how these two interact with metabolic pathways in vivo. Studying the cross-talk of these pathways has direct clinical implications as defects in cell division, signaling pathways, and metabolic homeostasis are frequently observed in liver diseases. In this review, we will focus on recent reports which describe various functions of cell cycle regulators in hepatic homeostasis. We will describe the interplay between the cell cycle and metabolism during liver regeneration after acute and chronic damage. We will focus our attention on non-alcoholic fatty liver disease, especially non-alcoholic steatohepatitis. The global incidence of non-alcoholic fatty liver disease is increasing exponentially. Therefore, understanding the interplay between cell cycle regulators and metabolism may lead to the discovery of novel therapeutic targets amenable to intervention.
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Affiliation(s)
- Matias J Caldez
- WPI Immunology Frontiers Research Centre, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | - Mikael Bjorklund
- Zhejiang University-University of Edinburgh (ZJU-UoE) Institute and 2nd Affiliated Hospital, Zhejiang University School of Medicine, 718 East Haizhou Rd., Haining, 314400, Zhejiang, People's Republic of China
| | - Philipp Kaldis
- Department of Clinical Sciences, Clinical Research Centre (CRC), Lund University, Box 50332, 202 13, Malmö, Sweden.
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Sivertsen Åsrud K, Pedersen L, Aesoy R, Muwonge H, Aasebø E, Nitschke Pettersen IK, Herfindal L, Dobie R, Jenkins S, Berge RK, Henderson NC, Selheim F, Døskeland SO, Bakke M. Mice depleted for Exchange Proteins Directly Activated by cAMP (Epac) exhibit irregular liver regeneration in response to partial hepatectomy. Sci Rep 2019; 9:13789. [PMID: 31551444 PMCID: PMC6760117 DOI: 10.1038/s41598-019-50219-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 09/06/2019] [Indexed: 02/07/2023] Open
Abstract
The exchange proteins directly activated by cAMP 1 and 2 (Epac1 and Epac2) are expressed in a cell specific manner in the liver, but their biological functions in this tissue are poorly understood. The current study was undertaken to begin to determine the potential roles of Epac1 and Epac2 in liver physiology and disease. Male C57BL/6J mice in which expression of Epac1 and/or Epac2 are deleted, were subjected to partial hepatectomy and the regenerating liver was analyzed with regard to lipid accumulation, cell replication and protein expression. In response to partial hepatectomy, deletion of Epac1 and/or Epac2 led to increased hepatocyte proliferation 36 h post surgery, and the transient steatosis observed in wild type mice was virtually absent in mice lacking both Epac1 and Epac2. The expression of the protein cytochrome P4504a14, which is implicated in hepatic steatosis and fibrosis, was substantially reduced upon deletion of Epac1/2, while a number of factors involved in lipid metabolism were significantly decreased. Moreover, the number of Küpffer cells was affected, and Epac2 expression was increased in the liver of wild type mice in response to partial hepatectomy, further supporting a role for these proteins in liver function. This study establishes hepatic phenotypic abnormalities in mice deleted for Epac1/2 for the first time, and introduces Epac1/2 as regulators of hepatocyte proliferation and lipid accumulation in the regenerative process.
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Affiliation(s)
| | - Line Pedersen
- Department of Biomedicine, The University of Bergen, Bergen, Norway
| | - Reidun Aesoy
- Department of Clinical Science, The University of Bergen, Bergen, Norway
| | - Haruna Muwonge
- Department of Biomedicine, The University of Bergen, Bergen, Norway
| | - Elise Aasebø
- Department of Clinical Science, The University of Bergen, Bergen, Norway
- Department of Biomedicine, The Proteomic Unit at The University of Bergen (PROBE), University of Bergen, 5009, Bergen, Norway
| | | | - Lars Herfindal
- Department of Clinical Science, The University of Bergen, Bergen, Norway
| | - Ross Dobie
- Centre for Inflammation Research, The Queen's Medical Research Institute, The University of Edinburgh, Edinburgh, UK
| | - Stephen Jenkins
- Centre for Inflammation Research, The Queen's Medical Research Institute, The University of Edinburgh, Edinburgh, UK
| | - Rolf Kristian Berge
- Department of Clinical Science, The University of Bergen, Bergen, Norway
- Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
| | - Neil Cowan Henderson
- Centre for Inflammation Research, The Queen's Medical Research Institute, The University of Edinburgh, Edinburgh, UK
| | - Frode Selheim
- Department of Biomedicine, The University of Bergen, Bergen, Norway
- Department of Clinical Science, The University of Bergen, Bergen, Norway
| | | | - Marit Bakke
- Department of Biomedicine, The University of Bergen, Bergen, Norway
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7
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Atorvastatin provides a new lipidome improving early regeneration after partial hepatectomy in osteopontin deficient mice. Sci Rep 2018; 8:14626. [PMID: 30279550 PMCID: PMC6168585 DOI: 10.1038/s41598-018-32919-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 09/18/2018] [Indexed: 01/16/2023] Open
Abstract
Osteopontin (OPN), a multifunctional cytokine that controls liver glycerolipid metabolism, is involved in activation and proliferation of several liver cell types during regeneration, a condition of high metabolic demands. Here we investigated the role of OPN in modulating the liver lipidome during regeneration after partial-hepatectomy (PH) and the impact that atorvastatin treatment has over regeneration in OPN knockout (KO) mice. The results showed that OPN deficiency leads to remodeling of phosphatidylcholine and triacylglycerol (TG) species primarily during the first 24 h after PH, with minimal effects on regeneration. Changes in the quiescent liver lipidome in OPN-KO mice included TG enrichment with linoleic acid and were associated with higher lysosome TG-hydrolase activity that maintained 24 h after PH but increased in WT mice. OPN-KO mice showed increased beta-oxidation 24 h after PH with less body weight loss. In OPN-KO mice, atorvastatin treatment induced changes in the lipidome 24 h after PH and improved liver regeneration while no effect was observed 48 h post-PH. These results suggest that increased dietary-lipid uptake in OPN-KO mice provides the metabolic precursors required for regeneration 24 h and 48 h after PH. However, atorvastatin treatment offers a new metabolic program that improves early regeneration when OPN is deficient.
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Wirsching A, Eberhardt C, Wurnig MC, Boss A, Lesurtel M. Transient steatosis assessed by magnetic resonance imaging predicts outcome after extended hepatectomy in mice. Am J Surg 2018; 216:658-665. [PMID: 30064726 DOI: 10.1016/j.amjsurg.2018.07.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Revised: 05/19/2018] [Accepted: 07/17/2018] [Indexed: 10/28/2022]
Abstract
RATIONALE AND OBJECTIVES Posthepatectomy liver failure (PHLF) remains challenging to diagnose and difficult to treat. The extent of transient regeneration-associated steatosis (TRAS) differs between successful liver regeneration and PHLF. This study aims to quantify TRAS by magnetic resonance imaging (MRI) after hepatectomy in mice. MATERIALS AND METHODS Mice (C57BL/6) underwent either extended hepatectomy (EH) or standard hepatectomy (SH). Serial MRI on postoperative days 1-7 was used to compare TRAS and liver remnant growth between groups. Survival was also assessed. RESULTS EH was associated with decreased survival and impaired proliferation when compared to SH (p = 0.02 and p = 0.03). MRI showed increased TRAS 48 h after EH compared to SH (11.8 ± 6% vs. 4.3 ± 2%, p < 0.001). Compared to EH survivors, death after EH was associated with increased TRAS 48 h postoperatively (16.4 ± 6% vs. 9.2 ± 5%, p = 0.02). CONCLUSIONS EH is associated with increased TRAS and inferior outcomes when compared to SH. MRI may help to predict PHLF after hepatectomy.
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Affiliation(s)
- Andrea Wirsching
- Swiss Hepato-Pancreatico-Biliary and Transplantation Center, Department of Surgery, University Hospital Zurich, Rämistrasse 100, CH-8091, Zürich, Switzerland.
| | - Christian Eberhardt
- Institute for Diagnosic and Interventional Radiology, University Hospital Zurich, Rämistrasse 100, CH-8091, Zürich, Switzerland.
| | - Moritz C Wurnig
- Institute for Diagnosic and Interventional Radiology, University Hospital Zurich, Rämistrasse 100, CH-8091, Zürich, Switzerland.
| | - Andreas Boss
- Institute for Diagnosic and Interventional Radiology, University Hospital Zurich, Rämistrasse 100, CH-8091, Zürich, Switzerland.
| | - Mickaël Lesurtel
- Swiss Hepato-Pancreatico-Biliary and Transplantation Center, Department of Surgery, University Hospital Zurich, Rämistrasse 100, CH-8091, Zürich, Switzerland.
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Zhao Y, Yang Y, Xing R, Cui X, Xiao Y, Xie L, You P, Wang T, Zeng L, Peng W, Li D, Chen H, Liu M. Hyperlipidemia induces typical atherosclerosis development in Ldlr and Apoe deficient rats. Atherosclerosis 2018; 271:26-35. [DOI: 10.1016/j.atherosclerosis.2018.02.015] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 02/08/2018] [Accepted: 02/08/2018] [Indexed: 01/23/2023]
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10
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Ou-Yang Q, Lin XM, Zhu YJ, Zheng B, Li L, Yang YC, Hou GJ, Chen X, Luo GJ, Huo F, Leng QB, Gonzalez FJ, Jiang XQ, Wang HY, Chen L. Distinct role of nuclear receptor corepressor 1 regulated de novo fatty acids synthesis in liver regeneration and hepatocarcinogenesis in mice. Hepatology 2018; 67:1071-1087. [PMID: 28960380 PMCID: PMC6661113 DOI: 10.1002/hep.29562] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 09/06/2017] [Accepted: 09/26/2017] [Indexed: 12/16/2022]
Abstract
UNLABELLED It is urgent that the means to improve liver regeneration (LR) be found, while mitigating the concurrent risk of hepatocarcinogenesis (HCG). Nuclear receptor corepressor 1 (NCoR1) is a co-repressor of nuclear receptors, which regulates the expression level of metabolic genes; however, little is known about its potential contribution for LR and HCG. Here, we found that liver-specific NCoR1 knockout in mice (NCoR1Δhep ) dramatically enhances LR after partial hepatectomy and, surprisingly, blocks the process of diethylnitrosamine (DEN)-induced HCG. Both RNA-sequencing and metabolic assay results revealed improved expression of Fasn and Acc2 in NCoR1Δhep mice, suggesting the critical role of de novo fatty acid synthesis (FAS) in LR. Continual enhanced de novo FAS in NCoR1Δhep mice resulted in overwhelmed adenosine triphosphate ATP and nicotinamide adenine dinucleotide phosphate (NADPH) consumption and increased mitochondrial reactive oxygen species production, which subsequently attenuated HCG through inducing apoptosis of hepatocytes at an early stage after DEN administration. CONCLUSION NCoR1 functions as a negative modulator for hepatic de novo FAS and mitochondria energy adaptation, playing distinct roles in regeneration or carcinogenesis. (Hepatology 2018;67:1071-1087).
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Affiliation(s)
- Qing Ou-Yang
- The International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
- Department of Biliary Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
- Department of Hepatobiliary Surgery, Center of Liver Transplantation, General Hospital of Guangzhou Military Region, Guangzhou, China
| | - Xi-Meng Lin
- The International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Yan-Jing Zhu
- The International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
- National Center for Liver Cancer, Shanghai, China
| | - Bo Zheng
- The International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
- National Center for Liver Cancer, Shanghai, China
| | - Liang Li
- The International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
- National Center for Liver Cancer, Shanghai, China
| | - Ying-Cheng Yang
- The International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Guo-Jun Hou
- The International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Xin Chen
- The International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
- National Center for Liver Cancer, Shanghai, China
| | - Gui-Juan Luo
- The International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
- National Center for Liver Cancer, Shanghai, China
| | - Feng Huo
- Department of Hepatobiliary Surgery, Center of Liver Transplantation, General Hospital of Guangzhou Military Region, Guangzhou, China
| | - Qi-Bin Leng
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Frank J. Gonzalez
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD
| | - Xiao-Qing Jiang
- Department of Biliary Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Hong-Yang Wang
- The International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
- National Center for Liver Cancer, Shanghai, China
| | - Lei Chen
- The International Cooperation Laboratory on Signal Transduction, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
- National Center for Liver Cancer, Shanghai, China
- Fudan University Shanghai Cancer Center; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
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11
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Liver Regeneration Is Impaired in Mice with Acute Exposure to a Very Low Carbohydrate Diet. Dig Dis Sci 2017; 62:1256-1264. [PMID: 28265828 DOI: 10.1007/s10620-017-4519-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 02/28/2017] [Indexed: 12/25/2022]
Abstract
BACKGROUND The metabolic response to hepatic insufficiency has been implicated in the regulators of normal liver regeneration. Modulation of nutritional factors has been demonstrated to affect liver regeneration. Diets containing very low carbohydrate and high fat levels cause a unique metabolic state, the effect of which on liver regeneration is unknown. METHODS Mice were placed on standard mice chow (ND) or a very low carbohydrate diet (VLCD) after 70% partial hepatectomy (PH). After 48 h, mice on VLCD were placed back to ND. The serum metabolic profiles, hepatic lipid content, and gene expression profile were examined. The dynamics of liver regeneration were detected at timed points. Activation of signaling pathways was examined. RESULTS VLCD feeding caused hypoglycemia and elevation of serum β-hydroxybutyrate and free fatty acids in mice after PH. It increased hepatic triglyceride contents, enhanced fatty acid oxidation, and reduced lipid synthesis. Mice on VLCD exhibited diminished hepatocellular mitotic frequency, a reduced BrdU incorporation and liver mass regeneration ratio, and delayed expression of PCNA. Expressions of IL-6 and TNFα in liver and serum were downregulated. Meanwhile, phosphorylation of STAT3, Erk, and AKT was delayed compared with controls. CONCLUSIONS VLCD feeding delayed liver regeneration, probably because of the suppression of TNFα-IL-6-STAT3 signaling and delayed activation of Erk and AKT induced by the unique metabolic effects of this diet.
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12
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Pauta M, Rotllan N, Fernández-Hernando A, Langhi C, Ribera J, Lu M, Boix L, Bruix J, Jimenez W, Suárez Y, Ford DA, Baldán A, Birnbaum MJ, Morales-Ruiz M, Fernández-Hernando C. Akt-mediated foxo1 inhibition is required for liver regeneration. Hepatology 2016; 63:1660-74. [PMID: 26473496 PMCID: PMC5177729 DOI: 10.1002/hep.28286] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 09/18/2015] [Accepted: 10/13/2015] [Indexed: 12/24/2022]
Abstract
UNLABELLED Understanding the hepatic regenerative process has clinical interest as the effectiveness of many treatments for chronic liver diseases is conditioned by efficient liver regeneration. Experimental evidence points to the need for a temporal coordination between cytokines, growth factors, and metabolic signaling pathways to enable successful liver regeneration. One intracellular mediator that acts as a signal integration node for these processes is the serine-threonine kinase Akt/protein kinase B (Akt). To investigate the contribution of Akt during hepatic regeneration, we performed partial hepatectomy in mice lacking Akt1, Akt2, or both isoforms. We found that absence of Akt1 or Akt2 does not influence liver regeneration after partial hepatectomy. However, hepatic-specific Akt1 and Akt2 null mice show impaired liver regeneration and increased mortality. The major abnormal cellular events observed in total Akt-deficient livers were a marked reduction in cell proliferation, cell hypertrophy, glycogenesis, and lipid droplet formation. Most importantly, liver-specific deletion of FoxO1, a transcription factor regulated by Akt, rescued the hepatic regenerative capability in Akt1-deficient and Akt2-deficient mice and normalized the cellular events associated with liver regeneration. CONCLUSION The Akt-FoxO1 signaling pathway plays an essential role during liver regeneration.
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Affiliation(s)
- Montse Pauta
- Department of Biochemistry and Molecular Genetics, Hospital Clinic of Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigaciones Biomédicas en Red en Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain,Departments of Medicine and Cell Biology, Leon H. Charney Division of Cardiology, New York University School of Medicine, New York, New York, USA
| | - Noemi Rotllan
- Departments of Medicine and Cell Biology, Leon H. Charney Division of Cardiology, New York University School of Medicine, New York, New York, USA,Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, Connecticut, USA,Integrative Cell Signaling and Neurobiology of Metabolism Program, Section of Comparative Medicine and Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Ana Fernández-Hernando
- Departments of Medicine and Cell Biology, Leon H. Charney Division of Cardiology, New York University School of Medicine, New York, New York, USA
| | - Cedric Langhi
- Edward A. Doisy Department of Biochemistry & Molecular Biology, and Center for Cardiovascular Research, Saint Louis University, Saint Louis, Missuri, USA
| | - Jordi Ribera
- Department of Biochemistry and Molecular Genetics, Hospital Clinic of Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigaciones Biomédicas en Red en Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain
| | - Mingjian Lu
- Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Loreto Boix
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Hospital Clínic of Barcelona, University of Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), CIBERehd, Barcelona, Spain
| | - Jordi Bruix
- Barcelona Clinic Liver Cancer (BCLC) Group, Liver Unit, Hospital Clínic of Barcelona, University of Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), CIBERehd, Barcelona, Spain
| | - Wladimiro Jimenez
- Department of Biochemistry and Molecular Genetics, Hospital Clinic of Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigaciones Biomédicas en Red en Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain,Department of Physiological Sciences I, University of Barcelona, Barcelona, Spain
| | - Yajaira Suárez
- Departments of Medicine and Cell Biology, Leon H. Charney Division of Cardiology, New York University School of Medicine, New York, New York, USA,Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, Connecticut, USA,Integrative Cell Signaling and Neurobiology of Metabolism Program, Section of Comparative Medicine and Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - David A. Ford
- Edward A. Doisy Department of Biochemistry & Molecular Biology, and Center for Cardiovascular Research, Saint Louis University, Saint Louis, Missuri, USA
| | - Angel Baldán
- Edward A. Doisy Department of Biochemistry & Molecular Biology, and Center for Cardiovascular Research, Saint Louis University, Saint Louis, Missuri, USA
| | - Morris J. Birnbaum
- Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Manuel Morales-Ruiz
- Department of Biochemistry and Molecular Genetics, Hospital Clinic of Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Centro de Investigaciones Biomédicas en Red en Enfermedades Hepáticas y Digestivas (CIBERehd), Barcelona, Spain,Department of Physiological Sciences I, University of Barcelona, Barcelona, Spain,Corresponding authors: Manuel Morales-Ruiz, Ph.D., Department of Biochemistry and Molecular Genetics, Hospital Clinic of Barcelona, 170 Villarroel St, Barcelona, 08036, Spain, Tel: 011-34-932275466; Fax: 011-34-932275697; ., Carlos Fernandez-Hernando, Ph.D., Vascular Biology and Therapeutics Program, Yale University School of Medicine, 10 Amistad Street, New Haven, CT06520, Tel: 2037374615; Fax: 2037372290;
| | - Carlos Fernández-Hernando
- Departments of Medicine and Cell Biology, Leon H. Charney Division of Cardiology, New York University School of Medicine, New York, New York, USA,Vascular Biology and Therapeutics Program, Yale University School of Medicine, New Haven, Connecticut, USA,Integrative Cell Signaling and Neurobiology of Metabolism Program, Section of Comparative Medicine and Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA,Corresponding authors: Manuel Morales-Ruiz, Ph.D., Department of Biochemistry and Molecular Genetics, Hospital Clinic of Barcelona, 170 Villarroel St, Barcelona, 08036, Spain, Tel: 011-34-932275466; Fax: 011-34-932275697; ., Carlos Fernandez-Hernando, Ph.D., Vascular Biology and Therapeutics Program, Yale University School of Medicine, 10 Amistad Street, New Haven, CT06520, Tel: 2037374615; Fax: 2037372290;
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Lipidomics comparing DCD and DBD liver allografts uncovers lysophospholipids elevated in recipients undergoing early allograft dysfunction. Sci Rep 2015; 5:17737. [PMID: 26635289 PMCID: PMC4669413 DOI: 10.1038/srep17737] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 11/05/2015] [Indexed: 12/14/2022] Open
Abstract
Finding specific biomarkers of liver damage in clinical evaluations could increase the pool of available organs for transplantation. Lipids are key regulators in cell necrosis and hence this study hypothesised that lipid levels could be altered in organs suffering severe ischemia. Matched pre- and post-transplant biopsies from donation after circulatory death (DCD, n = 36, mean warm ischemia time = 2 min) and donation after brain death (DBD, n = 76, warm ischemia time = none) were collected. Lipidomic discovery and multivariate analysis (MVA) were applied. Afterwards, univariate analysis and clinical associations were conducted for selected lipids differentiating between these two groups. MVA grouped DCD vs. DBD (p = 6.20 × 10(-12)) and 12 phospholipids were selected for intact lipid measurements. Two lysophosphatidylcholines, LysoPC (16:0) and LysoPC (18:0), showed higher levels in DCD at pre-transplantation (q < 0.01). Lysophosphatidylcholines were associated with aspartate aminotransferase (AST) 14-day post-transplantation (q < 0.05) and were more abundant in recipients undergoing early allograft dysfunction (EAD) (p < 0.05). A receiver-operating characteristics (ROC) curve combining both lipid levels predicted EAD with 82% accuracy. These findings suggest that LysoPC (16:0) and LysoPC (18:0) might have a role in signalling liver tissue damage due to warm ischemia before transplantation.
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Elucidating Metabolic and Epigenetic Mechanisms that Regulate Liver Regeneration. CURRENT PATHOBIOLOGY REPORTS 2015. [DOI: 10.1007/s40139-015-0065-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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