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Wojnar-Lason K, Tyrankiewicz U, Kij A, Kurpinska A, Kaczara P, Kwiatkowski G, Wilkosz N, Giergiel M, Stojak M, Grosicki M, Mohaissen T, Jasztal A, Kurylowicz Z, Szymonski M, Czyzynska-Cichon I, Chlopicki S. Chronic heart failure induces early defenestration of liver sinusoidal endothelial cells (LSECs) in mice. Acta Physiol (Oxf) 2024; 240:e14114. [PMID: 38391060 DOI: 10.1111/apha.14114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 01/30/2024] [Accepted: 02/02/2024] [Indexed: 02/24/2024]
Abstract
AIM Chronic heart failure (CHF) is often linked to liver malfunction and systemic endothelial dysfunction. However, whether cardio-hepatic interactions in heart failure involve dysfunction of liver sinusoidal endothelial cells (LSECs) is not known. Here we characterize LSECs phenotype in early and end stages of chronic heart failure in a murine model. METHODS Right ventricle (RV) function, features of congestive hepatopathy, and the phenotype of primary LSECs were characterized in Tgαq*44 mice, with cardiomyocyte-specific overexpression of the Gαq protein, at the age of 4- and 12-month representative for early and end-stage phases of CHF, respectively. RESULTS 4- and 12-month-old Tgαq*44 mice displayed progressive impairment of RV function and alterations in hepatic blood flow velocity resulting in hepatic congestion with elevated GGT and bilirubin plasma levels and decreased albumin concentration without gross liver pathology. LSECs isolated from 4- and 12-month-old Tgαq*44 mice displayed significant loss of fenestrae with impaired functional response to cytochalasin B, significant changes in proteome related to cytoskeleton remodeling, and altered vasoprotective function. However, LSECs barrier function and bioenergetics were largely preserved. In 4- and 12-month-old Tgαq*44 mice, LSECs defenestration was associated with prolonged postprandial hypertriglyceridemia and in 12-month-old Tgαq*44 mice with proteomic changes of hepatocytes indicative of altered lipid metabolism. CONCLUSION Tgαq*44 mice displayed right-sided HF and altered hepatic blood flow leading to LSECs dysfunction involving defenestration, shift in eicosanoid profile, and proteomic changes. LSECs dysfunction appears as an early and persistent event in CHF, preceding congestive hepatopathy and contributing to alterations in lipoprotein transport and CHF pathophysiology.
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Affiliation(s)
- Kamila Wojnar-Lason
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
- Department of Pharmacology, Jagiellonian University Medical College, Krakow, Poland
| | - Urszula Tyrankiewicz
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Agnieszka Kij
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Anna Kurpinska
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Patrycja Kaczara
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Grzegorz Kwiatkowski
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Natalia Wilkosz
- Faculty of Physics, Astronomy and Applied Computer Science, Department of Physics of Nanostructures and Nanotechnology, Jagiellonian University, Krakow, Poland
- AGH University of Krakow, Krakow, Poland
| | - Magdalena Giergiel
- Faculty of Physics, Astronomy and Applied Computer Science, Department of Physics of Nanostructures and Nanotechnology, Jagiellonian University, Krakow, Poland
| | - Marta Stojak
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Marek Grosicki
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Tasnim Mohaissen
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Agnieszka Jasztal
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Zuzanna Kurylowicz
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Marek Szymonski
- Faculty of Physics, Astronomy and Applied Computer Science, Department of Physics of Nanostructures and Nanotechnology, Jagiellonian University, Krakow, Poland
| | - Izabela Czyzynska-Cichon
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Stefan Chlopicki
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
- Department of Pharmacology, Jagiellonian University Medical College, Krakow, Poland
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Zhang X, Li P, Zhou J, Zhang Z, Wu H, Shu X, Li W, Wu Y, Du Y, Lü D, Lü S, Li N, Long M. FAK-p38 signaling serves as a potential target for reverting matrix stiffness-modulated liver sinusoidal endothelial cell defenestration. Biomaterials 2024; 305:122462. [PMID: 38171118 DOI: 10.1016/j.biomaterials.2023.122462] [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: 10/17/2023] [Revised: 12/26/2023] [Accepted: 12/31/2023] [Indexed: 01/05/2024]
Abstract
Liver sinusoidal endothelial cells (LSECs) are highly specific endothelial cells which play an essential role in the maintenance of liver homeostasis. During the progression of liver fibrosis, matrix stiffening promotes LSEC defenestration, however, the underlying mechanotransduction mechanism remains poorly understood. Here, we applied stiffness-tunable hydrogels to assess the matrix stiffening-induced phenotypic changes in primary mouse LSECs. Results indicated that increased stiffness promoted LSEC defenestration through cytoskeletal reorganization. LSECs sensed the increased matrix stiffness via focal adhesion kinase (FAK), leading to the activation of p38-mitogen activated protein kinase activated protein kinase 2 (MK2) pathway, thereby inducing actin remodeling via LIM Kinase 1 (LIMK1) and Cofilin. Interestingly, inhibition of FAK or p38-MK2 pathway was able to effectively restore the fenestrae to a certain degree in LSECs isolated from early to late stages of liver fibrosis mice. Thus, this study highlights the impact of mechanotransduction in LSEC defenestration, and provides novel insights for potential therapeutic interventions for liver fibrosis.
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Affiliation(s)
- Xiaoyu Zhang
- Center for Biomechanics and Bioengineering, Beijing Key Laboratory of Engineered Construction and Mechanobiology and Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China; School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Peiwen Li
- Center for Biomechanics and Bioengineering, Beijing Key Laboratory of Engineered Construction and Mechanobiology and Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jin Zhou
- Center for Biomechanics and Bioengineering, Beijing Key Laboratory of Engineered Construction and Mechanobiology and Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Ziliang Zhang
- Center for Biomechanics and Bioengineering, Beijing Key Laboratory of Engineered Construction and Mechanobiology and Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China; Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, 250117, China
| | - Huan Wu
- Center for Biomechanics and Bioengineering, Beijing Key Laboratory of Engineered Construction and Mechanobiology and Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xinyu Shu
- Center for Biomechanics and Bioengineering, Beijing Key Laboratory of Engineered Construction and Mechanobiology and Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China; School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wang Li
- Center for Biomechanics and Bioengineering, Beijing Key Laboratory of Engineered Construction and Mechanobiology and Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China; School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yi Wu
- Center for Biomechanics and Bioengineering, Beijing Key Laboratory of Engineered Construction and Mechanobiology and Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China; School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yu Du
- Center for Biomechanics and Bioengineering, Beijing Key Laboratory of Engineered Construction and Mechanobiology and Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Dongyuan Lü
- Center for Biomechanics and Bioengineering, Beijing Key Laboratory of Engineered Construction and Mechanobiology and Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China; School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shouqin Lü
- Center for Biomechanics and Bioengineering, Beijing Key Laboratory of Engineered Construction and Mechanobiology and Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China; School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ning Li
- Center for Biomechanics and Bioengineering, Beijing Key Laboratory of Engineered Construction and Mechanobiology and Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China; School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Mian Long
- Center for Biomechanics and Bioengineering, Beijing Key Laboratory of Engineered Construction and Mechanobiology and Key Laboratory of Microgravity (National Microgravity Laboratory), Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China; School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.
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Antwi MB, Dumitriu G, Simón-Santamaria J, Romano JS, Li R, Smedsrød B, Vik A, Eskild W, Sørensen KK. Liver sinusoidal endothelial cells show reduced scavenger function and downregulation of Fc gamma receptor IIb, yet maintain a preserved fenestration in the Glmpgt/gt mouse model of slowly progressing liver fibrosis. PLoS One 2023; 18:e0293526. [PMID: 37910485 PMCID: PMC10619817 DOI: 10.1371/journal.pone.0293526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 10/16/2023] [Indexed: 11/03/2023] Open
Abstract
Liver sinusoidal endothelial cells (LSECs) are fenestrated endothelial cells with a unique, high endocytic clearance capacity for blood-borne waste macromolecules and colloids. This LSEC scavenger function has been insufficiently characterized in liver disease. The Glmpgt/gt mouse lacks expression of a subunit of the MFSD1/GLMP lysosomal membrane protein transporter complex, is born normal, but soon develops chronic, mild hepatocyte injury, leading to slowly progressing periportal liver fibrosis, and splenomegaly. This study examined how LSEC scavenger function and morphology are affected in the Glmpgt/gt model. FITC-labelled formaldehyde-treated serum albumin (FITC-FSA), a model ligand for LSEC scavenger receptors was administered intravenously into Glmpgt/gt mice, aged 4 months (peak of liver inflammation), 9-10 month, and age-matched Glmpwt/wt mice. Organs were harvested for light and electron microscopy, quantitative image analysis of ligand uptake, collagen accumulation, LSEC ultrastructure, and endocytosis receptor expression (also examined by qPCR and western blot). In both age groups, the Glmpgt/gt mice showed multifocal liver injury and fibrosis. The uptake of FITC-FSA in LSECs was significantly reduced in Glmpgt/gt compared to wild-type mice. Expression of LSEC receptors stabilin-1 (Stab1), and mannose receptor (Mcr1) was almost similar in liver of Glmpgt/gt mice and age-matched controls. At the same time, immunostaining revealed differences in the stabilin-1 expression pattern in sinusoids and accumulation of stabilin-1-positive macrophages in Glmpgt/gt liver. FcγRIIb (Fcgr2b), which mediates LSEC endocytosis of soluble immune complexes was widely and significantly downregulated in Glmpgt/gt liver. Despite increased collagen in space of Disse, LSECs of Glmpgt/gt mice showed well-preserved fenestrae organized in sieve plates but the frequency of holes >400 nm in diameter was increased, especially in areas with hepatocyte damage. In both genotypes, FITC-FSA also distributed to endothelial cells of spleen and bone marrow sinusoids, suggesting that these locations may function as possible compensatory sites of clearance of blood-borne scavenger receptor ligands in liver fibrosis.
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Affiliation(s)
- Milton Boaheng Antwi
- Department of Medical Biology, UiT-The Arctic University of Norway, Tromsø, Norway
- Section of Haematology, University Hospital of North Norway, Tromsø, Norway
| | - Gianina Dumitriu
- Department of Medical Biology, UiT-The Arctic University of Norway, Tromsø, Norway
| | | | | | - Ruomei Li
- Department of Medical Biology, UiT-The Arctic University of Norway, Tromsø, Norway
| | - Bård Smedsrød
- Department of Medical Biology, UiT-The Arctic University of Norway, Tromsø, Norway
| | - Anders Vik
- Section of Haematology, University Hospital of North Norway, Tromsø, Norway
- Department of Clinical Medicine, UiT-The Arctic University of Norway, Tromsø, Norway
| | - Winnie Eskild
- Department of Biosciences, University of Oslo, Oslo, Norway
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Mao H, Szafranska K, Kruse L, Holte C, Wolfson DL, Ahluwalia BS, Whitchurch CB, Cole L, Lockwood GP, Diekmann R, Le Couteur D, Cogger VC, McCourt PAG. Effect of caffeine and other xanthines on liver sinusoidal endothelial cell ultrastructure. Sci Rep 2023; 13:13390. [PMID: 37591901 PMCID: PMC10435486 DOI: 10.1038/s41598-023-40227-0] [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: 03/24/2023] [Accepted: 08/07/2023] [Indexed: 08/19/2023] Open
Abstract
Xanthines such as caffeine and theobromine are among the most consumed psychoactive stimulants in the world, either as natural components of coffee, tea and chocolate, or as added ingredients. The present study assessed if xanthines affect liver sinusoidal endothelial cells (LSEC). Cultured primary rat LSEC were challenged with xanthines at concentrations typically obtained from normal consumption of xanthine-containing beverages, food or medicines; and at higher concentrations below the in vitro toxic limit. The fenestrated morphology of LSEC were examined with scanning electron and structured illumination microscopy. All xanthine challenges had no toxic effects on LSEC ultrastructure as judged by LSEC fenestration morphology, or function as determined by endocytosis studies. All xanthines in high concentrations (150 μg/mL) increased fenestration frequency but at physiologically relevant concentrations, only theobromine (8 μg/mL) showed an effect. LSEC porosity was influenced only by high caffeine doses which also shifted the fenestration distribution towards smaller pores. Moreover, a dose-dependent increase in fenestration number was observed after caffeine treatment. If these compounds induce similar changes in vivo, age-related reduction of LSEC porosity can be reversed by oral treatment with theobromine or with other xanthines using targeted delivery.
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Affiliation(s)
- Hong Mao
- Vascular Biology Research Group, Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, The Arctic University of Norway, 9037, Tromsø, Norway.
- Optical Nanoscopy Research Group, Department of Physics and Technology, Faculty of Science and Technology, University of Tromsø, The Arctic University of Norway, Tromsø, Norway.
| | - Karolina Szafranska
- Vascular Biology Research Group, Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, The Arctic University of Norway, 9037, Tromsø, Norway.
| | - Larissa Kruse
- Vascular Biology Research Group, Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, The Arctic University of Norway, 9037, Tromsø, Norway
| | - Christopher Holte
- Vascular Biology Research Group, Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, The Arctic University of Norway, 9037, Tromsø, Norway
| | - Deanna L Wolfson
- Optical Nanoscopy Research Group, Department of Physics and Technology, Faculty of Science and Technology, University of Tromsø, The Arctic University of Norway, Tromsø, Norway
| | - Balpreet Singh Ahluwalia
- Optical Nanoscopy Research Group, Department of Physics and Technology, Faculty of Science and Technology, University of Tromsø, The Arctic University of Norway, Tromsø, Norway
| | - Cynthia B Whitchurch
- Microbial Imaging Facility, The ithree Institute, University of Technology Sydney, Ultimo, NSW, Australia
| | - Louise Cole
- Microbial Imaging Facility, The ithree Institute, University of Technology Sydney, Ultimo, NSW, Australia
| | - Glen P Lockwood
- Centre for Education and Research, ANZAC Research Institute, Concord Repatriation General Hospital, Concord, NSW, Australia
- The Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
| | - Robin Diekmann
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
- LaVision BioTec GmbH, Bielefeld, Germany
| | - David Le Couteur
- Centre for Education and Research, ANZAC Research Institute, Concord Repatriation General Hospital, Concord, NSW, Australia
- The Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
| | - Victoria C Cogger
- Centre for Education and Research, ANZAC Research Institute, Concord Repatriation General Hospital, Concord, NSW, Australia
- The Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
| | - Peter A G McCourt
- Vascular Biology Research Group, Department of Medical Biology, Faculty of Health Sciences, University of Tromsø, The Arctic University of Norway, 9037, Tromsø, Norway
- Centre for Education and Research, ANZAC Research Institute, Concord Repatriation General Hospital, Concord, NSW, Australia
- The Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
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Li F, Zhao Y, Cheng Z, Wang Y, Yue Y, Cheng X, Sun J, Atabakhshi-Kashi M, Yao J, Dou J, Yu J, Zhang X, Qi Y, Li X, Qi X, Nie G. Restoration of Sinusoid Fenestrae Followed by Targeted Nanoassembly Delivery of an Anti-Fibrotic Agent Improves Treatment Efficacy in Liver Fibrosis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2212206. [PMID: 36862807 DOI: 10.1002/adma.202212206] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/17/2023] [Indexed: 05/17/2023]
Abstract
During the onset of liver fibrosis, capillarized liver sinusoidal endothelial cells (LSECs) limit substance exchange between the blood and the Disse space, further accelerating hepatic stellate cell (HSCs) activation and fibrosis progression. Limited accessibility of therapeutics to the Disse space is often overlooked and remains a major bottleneck for HSCs-targeted therapy in liver fibrosis. Here, an integrated systemic strategy for liver fibrosis treatment is reported, utilizing pretreatment with the soluble guanylate cyclase stimulator, riociguat, followed by insulin growth factor 2 receptor-mediated targeted delivery of the anti-fibrosis agent, JQ1, via peptide-nanoparticles (IGNP-JQ1). The riociguat reversed the liver sinusoid capillarization to maintain a relatively normal LSECs porosity, thus facilitating the transport of IGNP-JQ1 through the liver sinusoid endothelium wall and enhancing the accumulation of IGNP-JQ1 in the Disse space. IGNP-JQ1 is then selectively taken up by activated HSCs, inhibiting their proliferation and decreasing collagen deposition in the liver. The combined strategy results in significant fibrosis resolution in carbon tetrachloride-induced fibrotic mice as well as methionine-choline-deficient-diet-induced nonalcoholic steatohepatitis (NASH) mice. The work highlights the key role of LSECs in therapeutics transport through the liver sinusoid. The strategy of restoring LSECs fenestrae by riociguat represents a promising approach for liver fibrosis treatment.
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Affiliation(s)
- Fenfen Li
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, P. R. China
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- Henan Institute of Advanced Technology, Henan, 450003, P. R. China
| | - Ying Zhao
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zhaoxia Cheng
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yazhou Wang
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yale Yue
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, P. R. China
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- Henan Institute of Advanced Technology, Henan, 450003, P. R. China
| | - Xiaoyu Cheng
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jingyi Sun
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Mona Atabakhshi-Kashi
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jundong Yao
- Department of Interventional Ultrasound, 301 Hospital, 28 Fuxing Road, Beijing, 100853, P. R. China
| | - Jianping Dou
- Department of Interventional Ultrasound, 301 Hospital, 28 Fuxing Road, Beijing, 100853, P. R. China
| | - Jie Yu
- Department of Interventional Ultrasound, 301 Hospital, 28 Fuxing Road, Beijing, 100853, P. R. China
| | - Xiuping Zhang
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- Faculty of Hepato-Biliary-Pancreatic Surgery, 301 Hospital, Beijing, 100853, P. R. China
- Institute of Hepatobiliary Surgery, 301 Hospital, Beijing, 100853, P. R. China
- Key Laboratory of Digital Hepatobiliary Surgery, 301 Hospital, Beijing, 100853, P. R. China
| | - Yingqiu Qi
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Xiaotian Li
- School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue, Zhengzhou, Henan Province, 450001, P. R. China
| | - Xiaolong Qi
- Center of Portal Hypertension, Department of Radiology, Zhongda Hospital, Medical School, Southeast University, Nanjing, 210009, P. R. China
| | - Guangjun Nie
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, P. R. China
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- Henan Institute of Advanced Technology, Henan, 450003, P. R. China
- GBA Research Innovation Institute for Nanotechnology, Guangzhou, 510530, P. R. China
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Ströhl F, Wolfson DL, Opstad IS, Hansen DH, Mao H, Ahluwalia BS. Label-free superior contrast with c-band ultra-violet extinction microscopy. LIGHT, SCIENCE & APPLICATIONS 2023; 12:56. [PMID: 36864022 PMCID: PMC9981877 DOI: 10.1038/s41377-023-01105-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 02/14/2023] [Accepted: 02/14/2023] [Indexed: 06/18/2023]
Abstract
In 1934, Frits Zernike demonstrated that it is possible to exploit the sample's refractive index to obtain superior contrast images of biological cells. The refractive index contrast of a cell surrounded by media yields a change in the phase and intensity of the transmitted light wave. This change can be due to either scattering or absorption caused by the sample. Most cells are transparent at visible wavelengths, which means the imaginary component of their complex refractive index, also known as extinction coefficient k, is close to zero. Here, we explore the use of c-band ultra-violet (UVC) light for high-contrast high-resolution label-free microscopy, as k is naturally substantially higher in the UVC than at visible wavelengths. Using differential phase contrast illumination and associated processing, we achieve a 7- to 300-fold improvement in contrast compared to visible-wavelength and UVA differential interference contrast microscopy or holotomography, and quantify the extinction coefficient distribution within liver sinusoidal endothelial cells. With a resolution down to 215 nm, we are, for the first time in a far-field label-free method, able to image individual fenestrations within their sieve plates which normally requires electron or fluorescence superresolution microscopy. UVC illumination also matches the excitation peak of intrinsically fluorescent proteins and amino acids and thus allows us to utilize autofluorescence as an independent imaging modality on the same setup.
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Affiliation(s)
- Florian Ströhl
- Department of Physics and Technology, UiT The Arctic University of Norway, Tromsø, Norway.
| | - Deanna L Wolfson
- Department of Physics and Technology, UiT The Arctic University of Norway, Tromsø, Norway
| | - Ida S Opstad
- Department of Physics and Technology, UiT The Arctic University of Norway, Tromsø, Norway
| | - Daniel H Hansen
- Department of Physics and Technology, UiT The Arctic University of Norway, Tromsø, Norway
| | - Hong Mao
- Department of Physics and Technology, UiT The Arctic University of Norway, Tromsø, Norway
| | - Balpreet S Ahluwalia
- Department of Physics and Technology, UiT The Arctic University of Norway, Tromsø, Norway
- Department of Clinical Science, Intervention and Technology, Karolinska Institute, Stockholm, Sweden
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7
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Ho H, Means S, Safaei S, Hunter PJ. In silico modeling for the hepatic circulation and transport: From the liver organ to lobules. WIREs Mech Dis 2023; 15:e1586. [PMID: 36131627 DOI: 10.1002/wsbm.1586] [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: 10/23/2021] [Revised: 08/08/2022] [Accepted: 08/15/2022] [Indexed: 11/12/2022]
Abstract
The function of the liver depends critically on its blood supply. Numerous in silico models have been developed to study various aspects of the hepatic circulation, including not only the macro-hemodynamics at the organ level, but also the microcirculation at the lobular level. In addition, computational models of blood flow and bile flow have been used to study the transport, metabolism, and clearance of drugs in pharmacokinetic studies. These in silico models aim to provide insights into the liver organ function under both healthy and diseased states, and to assist quantitative analysis for surgical planning and postsurgery treatment. The purpose of this review is to provide an update on state-of-the-art in silico models of the hepatic circulation and transport processes. We introduce the numerical methods and the physiological background of these models. We also discuss multiscale frameworks that have been proposed for the liver, and their linkage with the large context of systems biology, systems pharmacology, and the Physiome project. This article is categorized under: Metabolic Diseases > Computational Models Metabolic Diseases > Biomedical Engineering Cardiovascular Diseases > Computational Models.
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Affiliation(s)
- Harvey Ho
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
| | - Shawn Means
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
| | - Soroush Safaei
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
| | - Peter John Hunter
- Auckland Bioengineering Institute, The University of Auckland, Auckland, New Zealand
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8
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Chen S, Zhu J, Xue J, Wang X, Jing P, Zhou L, Cui Y, Wang T, Gong X, Lü S, Long M. Numerical simulation of flow characteristics in a permeable liver sinusoid with leukocytes. Biophys J 2022; 121:4666-4678. [PMID: 36271623 PMCID: PMC9748252 DOI: 10.1016/j.bpj.2022.10.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 08/31/2022] [Accepted: 10/17/2022] [Indexed: 02/07/2023] Open
Abstract
Double-layered channels of sinusoid lumen and Disse space separated by fenestrated liver sinusoidal endothelial cells (LSECs) endow the unique mechanical environment of the liver sinusoid network, which further guarantees its biological function. It is also known that this mechanical environment changes dramatically under liver fibrosis and cirrhosis, including the reduced plasma penetration and metabolite exchange between the two flow channels and the reduced Disse space deformability. The squeezing of leukocytes through narrow sinusoid lumen also affects the mechanical environment of liver sinusoid. To date, the detailed flow-field profile of liver sinusoid is still far from clear due to experimental limitations. It also remains elusive whether and how the varied physical properties of the pathological liver sinusoid regulate the fluid flow characteristics. Here a numerical model based on the immersed boundary method was established, and the effects of Disse space and leukocyte elasticities, endothelium permeability, and sinusoidal stenosis degree on fluid flow as well as leukocyte trafficking were specified upon a mimic liver sinusoid structure. Results showed that endothelium permeability dominantly controlled the plasma penetration velocity across the endothelium, whereas leukocyte squeezing promoted local penetration and significantly regulated wall shear stress on hepatocytes, which was strongly related to the Disse space and leukocyte deformability. Permeability and elasticity cooperatively regulated the process of leukocytes trafficking through the liver sinusoid, especially for stiffer leukocytes. This study will offer new insights into deeper understanding of the elaborate mechanical features of liver sinusoid and corresponding biological function.
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Affiliation(s)
- Shenbao Chen
- Center of Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), Beijing Key Laboratory of Engineered Construction and Mechanobiology, and CAS Center for Excellence in Complex System Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China; School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China
| | - Jingchen Zhu
- Center of Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), Beijing Key Laboratory of Engineered Construction and Mechanobiology, and CAS Center for Excellence in Complex System Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China; School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China
| | - Jian Xue
- School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
| | - Xiaolong Wang
- Key Laboratory of Hydrodynamics (Ministry of Education), Department of Engineering Mechanics, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Peng Jing
- Key Laboratory of Hydrodynamics (Ministry of Education), Department of Engineering Mechanics, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Lüwen Zhou
- Center of Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), Beijing Key Laboratory of Engineered Construction and Mechanobiology, and CAS Center for Excellence in Complex System Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China; School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China
| | - Yuhong Cui
- Department of Mechanics, Tianjin University, Tianjin, China
| | - Tianhao Wang
- Department of Mechanics, Tianjin University, Tianjin, China
| | - Xiaobo Gong
- Key Laboratory of Hydrodynamics (Ministry of Education), Department of Engineering Mechanics, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai, China.
| | - Shouqin Lü
- Center of Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), Beijing Key Laboratory of Engineered Construction and Mechanobiology, and CAS Center for Excellence in Complex System Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China; School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China.
| | - Mian Long
- Center of Biomechanics and Bioengineering, Key Laboratory of Microgravity (National Microgravity Laboratory), Beijing Key Laboratory of Engineered Construction and Mechanobiology, and CAS Center for Excellence in Complex System Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China; School of Engineering Science, University of Chinese Academy of Sciences, Beijing, China.
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9
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Li R, Bhandari S, Martinez-Zubiaurre I, Bruun JA, Urbarova I, Smedsrød B, Simón-Santamaría J, Sørensen KK. Changes in the proteome and secretome of rat liver sinusoidal endothelial cells during early primary culture and effects of dexamethasone. PLoS One 2022; 17:e0273843. [PMID: 36054185 PMCID: PMC9439253 DOI: 10.1371/journal.pone.0273843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 08/16/2022] [Indexed: 11/28/2022] Open
Abstract
Introduction Liver sinusoidal endothelial cells (LSECs) are specialized fenestrated scavenger endothelial cells involved in the elimination of modified plasma proteins and tissue turnover waste macromolecules from blood. LSECs also participate in liver immune responses. A challenge when studying LSEC biology is the rapid loss of the in vivo phenotype in culture. In this study, we have examined biological processes and pathways affected during early-stage primary culture of rat LSECs and checked for cell responses to the pro-inflammatory cytokine interleukin (IL)-1β and the anti-inflammatory drug dexamethasone. Methods LSECs from male Sprague Dawley rats were cultured on type I collagen in 5% oxygen atmosphere in DMEM with serum-free supplements for 2 and 24 h. Quantitative proteomics using tandem mass tag technology was used to examine proteins in cells and supernatants. Validation was done with qPCR, ELISA, multiplex immunoassay, and caspase 3/7 assay. Cell ultrastructure was examined by scanning electron microscopy, and scavenger function by quantitative endocytosis assays. Results LSECs cultured for 24 h showed a characteristic pro-inflammatory phenotype both in the presence and absence of IL-1β, with upregulation of cellular responses to cytokines and interferon-γ, cell-cell adhesion, and glycolysis, increased expression of fatty acid binding proteins (FABP4, FABP5), and downregulation of several membrane receptors (STAB1, STAB2, LYVE1, CLEC4G) and proteins in pyruvate metabolism, citric acid cycle, fatty acid elongation, amino acid metabolism, and oxidation-reduction processes. Dexamethasone inhibited apoptosis and improved LSEC viability in culture, repressed inflammatory and immune regulatory pathways and secretion of IL-1β and IL-6, and further upregulated FABP4 and FABP5 compared to time-matched controls. The LSEC porosity and endocytic activity were reduced at 24 h both with and without dexamethasone but the dexamethasone-treated cells showed a less stressed phenotype. Conclusion Rat LSECs become activated towards a pro-inflammatory phenotype during early culture. Dexamethasone represses LSEC activation, inhibits apoptosis, and improves cell viability.
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Affiliation(s)
- Ruomei Li
- Department of Medical Biology, UiT–The Arctic University of Norway, Tromsø, Norway
| | - Sabin Bhandari
- Department of Medical Biology, UiT–The Arctic University of Norway, Tromsø, Norway
| | | | - Jack-Ansgar Bruun
- Department of Medical Biology, UiT–The Arctic University of Norway, Tromsø, Norway
| | - Ilona Urbarova
- Department of Community Medicine, UiT–The Arctic University of Norway, Tromsø, Norway
| | - Bård Smedsrød
- Department of Medical Biology, UiT–The Arctic University of Norway, Tromsø, Norway
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10
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Kumar N, Saraber P, Ding Z, Kusumbe AP. Diversity of Vascular Niches in Bones and Joints During Homeostasis, Ageing, and Diseases. Front Immunol 2021; 12:798211. [PMID: 34975909 PMCID: PMC8718446 DOI: 10.3389/fimmu.2021.798211] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 11/19/2021] [Indexed: 12/29/2022] Open
Abstract
The bones and joints in the skeletal system are composed of diverse cell types, including vascular niches, bone cells, connective tissue cells and mineral deposits and regulate whole-body homeostasis. The capacity of maintaining strength and generation of blood lineages lies within the skeletal system. Bone harbours blood and immune cells and their progenitors, and vascular cells provide several immune cell type niches. Blood vessels in bone are phenotypically and functionally diverse, with distinct capillary subtypes exhibiting striking changes with age. The bone vasculature has a special impact on osteogenesis and haematopoiesis, and dysregulation of the vasculature is associated with diverse blood and bone diseases. Ageing is associated with perturbed haematopoiesis, loss of osteogenesis, increased adipogenesis and diminished immune response and immune cell production. Endothelial and perivascular cells impact immune cell production and play a crucial role during inflammation. Here, we discuss normal and maladapted vascular niches in bone during development, homeostasis, ageing and bone diseases such as rheumatoid arthritis and osteoarthritis. Further, we discuss the role of vascular niches during bone malignancy.
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Affiliation(s)
| | | | | | - Anjali P. Kusumbe
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), Tissue and Tumor Microenvironments Group, University of Oxford, Oxford, United Kingdom
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11
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Butola A, Coucheron DA, Szafranska K, Ahmad A, Mao H, Tinguely JC, McCourt P, Senthilkumaran P, Mehta DS, Agarwal K, Ahluwalia BS. Multimodal on-chip nanoscopy and quantitative phase imaging reveals the nanoscale morphology of liver sinusoidal endothelial cells. Proc Natl Acad Sci U S A 2021; 118:e2115323118. [PMID: 34782474 PMCID: PMC8617407 DOI: 10.1073/pnas.2115323118] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/11/2021] [Indexed: 12/26/2022] Open
Abstract
Visualization of three-dimensional (3D) morphological changes in the subcellular structures of a biological specimen is a major challenge in life science. Here, we present an integrated chip-based optical nanoscopy combined with quantitative phase microscopy (QPM) to obtain 3D morphology of liver sinusoidal endothelial cells (LSEC). LSEC have unique morphology with small nanopores (50-300 nm in diameter) in the plasma membrane, called fenestrations. The fenestrations are grouped in discrete clusters, which are around 100 to 200 nm thick. Thus, imaging and quantification of fenestrations and sieve plate thickness require resolution and sensitivity of sub-100 nm along both the lateral and the axial directions, respectively. In chip-based nanoscopy, the optical waveguides are used both for hosting and illuminating the sample. The fluorescence signal is captured by an upright microscope, which is converted into a Linnik-type interferometer to sequentially acquire both superresolved images and phase information of the sample. The multimodal microscope provided an estimate of the fenestration diameter of 119 ± 53 nm and average thickness of the sieve plates of 136.6 ± 42.4 nm, assuming the constant refractive index of cell membrane to be 1.38. Further, LSEC were treated with cytochalasin B to demonstrate the possibility of precise detection in the cell height. The mean phase value of the fenestrated area in normal and treated cells was found to be 161 ± 50 mrad and 109 ± 49 mrad, respectively. The proposed multimodal technique offers nanoscale visualization of both the lateral size and the thickness map, which would be of broader interest in the fields of cell biology and bioimaging.
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Affiliation(s)
- Ankit Butola
- Department of Physics and Technology, Universitetet i Tromsø (UiT) The Arctic University of Norway, 9037 Tromsø, Norway
- Bio-photonics and Green Photonics Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - David A Coucheron
- Department of Physics and Technology, Universitetet i Tromsø (UiT) The Arctic University of Norway, 9037 Tromsø, Norway
| | - Karolina Szafranska
- Faculty of Health Sciences, Department of Medical Biology, Vascular Biology Research Group, UiT The Arctic University of Norway, Tromsø 9037, Norway
| | - Azeem Ahmad
- Department of Physics and Technology, Universitetet i Tromsø (UiT) The Arctic University of Norway, 9037 Tromsø, Norway
| | - Hong Mao
- Department of Physics and Technology, Universitetet i Tromsø (UiT) The Arctic University of Norway, 9037 Tromsø, Norway
| | - Jean-Claude Tinguely
- Department of Physics and Technology, Universitetet i Tromsø (UiT) The Arctic University of Norway, 9037 Tromsø, Norway
| | - Peter McCourt
- Faculty of Health Sciences, Department of Medical Biology, Vascular Biology Research Group, UiT The Arctic University of Norway, Tromsø 9037, Norway
| | - Paramasivam Senthilkumaran
- Bio-photonics and Green Photonics Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Dalip Singh Mehta
- Bio-photonics and Green Photonics Laboratory, Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Krishna Agarwal
- Department of Physics and Technology, Universitetet i Tromsø (UiT) The Arctic University of Norway, 9037 Tromsø, Norway
| | - Balpreet Singh Ahluwalia
- Department of Physics and Technology, Universitetet i Tromsø (UiT) The Arctic University of Norway, 9037 Tromsø, Norway;
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, 17177 Stockholm, Sweden
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12
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Mak KM, Kee D, Shin DW. Alcohol-associated capillarization of sinusoids: A critique since the discovery by Schaffner and Popper in 1963. Anat Rec (Hoboken) 2021; 305:1592-1610. [PMID: 34766732 DOI: 10.1002/ar.24829] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 10/07/2021] [Accepted: 10/12/2021] [Indexed: 11/07/2022]
Abstract
This article reviews the literature on capillarization of hepatic sinusoids since its discovery in 1963. Liver sinusoidal endothelial cells are uniquely fenestrated and lack an underlying basement membrane. In chronic liver disease, the sinusoids capillarize and transform into systemic capillaries, a process termed capillarization of sinusoids. The histopathology is marked by defenestration, basement membrane formation, and space of Disse fibrogenesis. Capillarized sinusoids compromise the bidirectional exchange of materials between sinusoids and hepatocytes, leading to hepatocellular dysfunction. Sinusoidal capillarization was first described in active cirrhosis of alcoholics in 1963. Since then, it has been found in early and progressive stages of alcoholic hepatic fibrosis before the onset of cirrhosis. The sinusoidal structure is not altered in alcoholic steatosis without fibrosis. Defenestration impairs the ability of the endothelium to filter chylomicron remnants from sinusoids into the Disse's space, contributing to alcohol-induced postprandial hyperlipidemia and possibly atherosclerosis. Ethanol also modulates the fenestration dynamics in animals. In baboons, chronic alcohol consumption diminishes endothelial porosity in concomitance with hepatic fibrogenesis and in rats defenestrates the endothelium in the absence of fibrosis, and sometimes capillarizes the sinusoids. Acute ethanol ingestion enlarges fenestrations in rats and contracts fenestrations in rabbits. In sinusoidal endothelial cell culture, ethanol elicits fenestration dilation, which is likely related to its interaction with fenestration-associated cytoskeleton. Ethanol potentiates sinusoidal injury caused by cocaine, acetaminophen or lipopolysaccharide in mice and rats. Understanding ethanol's mechanisms on pathogenesis of sinusoidal capillarization and fenestration dynamics will lead to development of methods to prevent risks for atherosclerosis in alcoholism.
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Affiliation(s)
- Ki M Mak
- Department of Medical Education, Center for Anatomy and Functional Morphology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Dustin Kee
- Department of Medical Education, Center for Anatomy and Functional Morphology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Da Wi Shin
- Department of Medical Education, Center for Anatomy and Functional Morphology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
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13
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Formes H, Bernardes JP, Mann A, Bayer F, Pontarollo G, Kiouptsi K, Schäfer K, Attig S, Nikolova T, Hofmann TG, Schattenberg JM, Todorov H, Gerber S, Rosenstiel P, Bopp T, Sommer F, Reinhardt C. The gut microbiota instructs the hepatic endothelial cell transcriptome. iScience 2021; 24:103092. [PMID: 34622147 PMCID: PMC8479694 DOI: 10.1016/j.isci.2021.103092] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 07/15/2021] [Accepted: 09/06/2021] [Indexed: 12/26/2022] Open
Abstract
The gut microbiota affects remote organ functions but its impact on organotypic endothelial cell (EC) transcriptomes remains unexplored. The liver endothelium encounters microbiota-derived signals and metabolites via the portal circulation. To pinpoint how gut commensals affect the hepatic sinusoidal endothelium, a magnetic cell sorting protocol, combined with fluorescence-activated cell sorting, was used to isolate hepatic sinusoidal ECs from germ-free (GF) and conventionally raised (CONV-R) mice for transcriptome analysis by RNA sequencing. This resulted in a comprehensive map of microbiota-regulated hepatic EC-specific transcriptome profiles. Gene Ontology analysis revealed that several functional processes in the hepatic endothelium were affected. The absence of microbiota influenced the expression of genes involved in cholesterol flux and angiogenesis. Specifically, genes functioning in hepatic endothelial sphingosine metabolism and the sphingosine-1-phosphate pathway showed drastically increased expression in the GF state. Our analyses reveal a prominent role for the microbiota in shaping the transcriptional landscape of the hepatic endothelium. Germ-free mice show transcriptome differences in the liver sinusoidal endothelium Gut microbiota suppresses sphingolipid metabolism in the hepatic sinusoidal endothelium Cholesterol flux and angiogenesis in liver endothelium is microbiota-regulated Bacteroides thetaiotaomicron did not affect expression levels of the identified genes
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Affiliation(s)
- Henning Formes
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany.,Department of Chemistry, Biochemistry, Johannes Gutenberg-University Mainz, Hanns-Dieter-Hüsch-Weg 17, 55128 Mainz, Germany
| | - Joana P Bernardes
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Medical Center Schleswig-Holstein, Campus Kiel, 24105 Kiel, Germany
| | - Amrit Mann
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Franziska Bayer
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Giulia Pontarollo
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Klytaimnistra Kiouptsi
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Katrin Schäfer
- Department of Cardiology, Cardiology I, University Medical Center Mainz, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
| | - Sebastian Attig
- Research Center for Immunotherapy (FZI), University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany.,TRON, Translational Oncology at the University Medical Center, Johannes Gutenberg-University Mainz gGmbH, Freiligrathstrasse 12, 55131 Mainz, Germany
| | - Teodora Nikolova
- Institute of Toxicology, University Medical Center Mainz, Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Thomas G Hofmann
- Institute of Toxicology, University Medical Center Mainz, Johannes Gutenberg-University Mainz, 55131 Mainz, Germany
| | - Jörn M Schattenberg
- Metabolic Liver Research Program, Department of Internal Medicine I, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Hristo Todorov
- Institute of Human Genetics, University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Susanne Gerber
- Institute of Human Genetics, University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Philip Rosenstiel
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Medical Center Schleswig-Holstein, Campus Kiel, 24105 Kiel, Germany
| | - Tobias Bopp
- Research Center for Immunotherapy (FZI), University Medical Center, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany.,Institute for Immunology, University Medical Center Mainz, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany
| | - Felix Sommer
- Institute of Clinical Molecular Biology, Christian-Albrechts-University and University Medical Center Schleswig-Holstein, Campus Kiel, 24105 Kiel, Germany
| | - Christoph Reinhardt
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany.,German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
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14
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Szafranska K, Kruse LD, Holte CF, McCourt P, Zapotoczny B. The wHole Story About Fenestrations in LSEC. Front Physiol 2021; 12:735573. [PMID: 34588998 PMCID: PMC8473804 DOI: 10.3389/fphys.2021.735573] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 08/16/2021] [Indexed: 02/06/2023] Open
Abstract
The porosity of liver sinusoidal endothelial cells (LSEC) ensures bidirectional passive transport of lipoproteins, drugs and solutes between the liver capillaries and the liver parenchyma. This porosity is realized via fenestrations - transcellular pores with diameters in the range of 50-300 nm - typically grouped together in sieve plates. Aging and several liver disorders severely reduce LSEC porosity, decreasing their filtration properties. Over the years, a variety of drugs, stimulants, and toxins have been investigated in the context of altered diameter or frequency of fenestrations. In fact, any change in the porosity, connected with the change in number and/or size of fenestrations is reflected in the overall liver-vascular system crosstalk. Recently, several commonly used medicines have been proposed to have a beneficial effect on LSEC re-fenestration in aging. These findings may be important for the aging populations of the world. In this review we collate the literature on medicines, recreational drugs, hormones and laboratory tools (including toxins) where the effect LSEC morphology was quantitatively analyzed. Moreover, different experimental models of liver pathology are discussed in the context of fenestrations. The second part of this review covers the cellular mechanisms of action to enable physicians and researchers to predict the effect of newly developed drugs on LSEC porosity. To achieve this, we discuss four existing hypotheses of regulation of fenestrations. Finally, we provide a summary of the cellular mechanisms which are demonstrated to tune the porosity of LSEC.
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Affiliation(s)
- Karolina Szafranska
- Vascular Biology Research Group, Department of Medical Biology, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
| | - Larissa D Kruse
- Vascular Biology Research Group, Department of Medical Biology, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
| | - Christopher Florian Holte
- Vascular Biology Research Group, Department of Medical Biology, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
| | - Peter McCourt
- Vascular Biology Research Group, Department of Medical Biology, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
| | - Bartlomiej Zapotoczny
- Vascular Biology Research Group, Department of Medical Biology, University of Tromsø - The Arctic University of Norway, Tromsø, Norway.,Department of Biophysical Microstructures, Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland
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15
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Verhaegh P, Wisse E, de Munck T, Greve JW, Verheij J, Riedl R, Duimel H, Masclee A, Jonkers D, Koek G. Electron microscopic observations in perfusion-fixed human non-alcoholic fatty liver disease biopsies. Pathology 2020; 53:220-228. [PMID: 33143903 DOI: 10.1016/j.pathol.2020.07.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 07/23/2020] [Accepted: 07/29/2020] [Indexed: 12/19/2022]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is a widespread liver disease in Western society, but its multifactorial pathogenesis is not yet fully understood. Ultrastructural analysis of liver sinusoidal endothelial cells (LSECs) in animal models and in vitro studies shows defenestration early in the course of NAFLD, promoting steatosis. LSECs and fenestrae are important in the transport of lipids across the sinusoids. However, human ultrastructural data, especially on LSECs and fenestrae, are scarce. This study aimed to explore the ultrastructural changes in perfusion type fixed liver biopsies of NAFLD patients with and without non-alcoholic steatohepatitis (NASH), with a special focus on LSECs and their fenestration. Liver biopsies from patients with NAFLD were fixed using two perfusion techniques, jet and injection fixation, for needle and wedge biopsies, respectively. Ultrastructural changes were studied using transmission electron microscopy. NASH was diagnosed by bright-field microscopy using the SAF score (steatosis, activity, fibrosis). Thirty-seven patients were included, of which 12 (32.4%) had NASH. Significantly less defenestration was found in NASH compared to noNASH samples (p=0.002). Other features, i.e., giant mitochondria and fenestrae size did not differ between groups. Furthermore, we described new structures, i.e., single cell steatonecrosis and inflammatory fat follicles (IFF) that were observed in both groups. Concluding, defenestration was more common in noNASH compared to NASH in human liver samples. Defenestration was not related to the degree of steatosis or fibrosis. We speculate that defenestration can be a protective mechanism in simple steatosis which is lacking in NASH.
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Affiliation(s)
- Pauline Verhaegh
- Department of Internal Medicine, Division Gastroenterology-Hepatology, Maastricht University Medical Center, Maastricht, the Netherlands; School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, the Netherlands.
| | - Eddie Wisse
- Division of Nanoscopy, Maastricht Multimodal Molecular Imaging Institute, and Department of Internal Medicine/Hepatology, The University of Maastricht, Maastricht, the Netherlands
| | - Toon de Munck
- Department of Internal Medicine, Division Gastroenterology-Hepatology, Maastricht University Medical Center, Maastricht, the Netherlands; School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, the Netherlands
| | - Jan Willem Greve
- Department of Surgery, Zuyderland MC, Heerlen, the Netherlands; Department of Gastro-Intestinal Surgery, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Joanne Verheij
- Department of Pathology, Amsterdam University Medical Center, Amsterdam, the Netherlands
| | - Robert Riedl
- Department of Pathology, Zuyderland MC, Heerlen, the Netherlands
| | - Hans Duimel
- Division of Nanoscopy, Maastricht Multimodal Molecular Imaging Institute, and Department of Internal Medicine/Hepatology, The University of Maastricht, Maastricht, the Netherlands
| | - Ad Masclee
- Department of Internal Medicine, Division Gastroenterology-Hepatology, Maastricht University Medical Center, Maastricht, the Netherlands; School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, the Netherlands
| | - Daisy Jonkers
- School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, the Netherlands
| | - Ger Koek
- Department of Internal Medicine, Division Gastroenterology-Hepatology, Maastricht University Medical Center, Maastricht, the Netherlands; School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, the Netherlands; Department of Visceral and Transplantation Surgery, Klinikum RWTH, Aachen, Germany
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16
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Hide D, Warren A, Fernández-Iglesias A, Maeso-Díaz R, Peralta C, Le Couteur DG, Bosch J, Cogger VC, Gracia-Sancho J. Ischemia/Reperfusion Injury in the Aged Liver: The Importance of the Sinusoidal Endothelium in Developing Therapeutic Strategies for the Elderly. J Gerontol A Biol Sci Med Sci 2020; 75:268-277. [PMID: 30649272 DOI: 10.1093/gerona/glz012] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Indexed: 12/24/2022] Open
Abstract
The liver endothelium plays a key role in the progression and resolution of liver diseases in young and adult individuals. However, its role in older people remains unknown. We have herein evaluated the importance of the sinusoidal endothelium in the pathophysiology of acute liver injury, and investigated the applicability of simvastatin, in aged animals. Eighteen-months-old male Wistar rats underwent 60 minutes of partial warm ischemia followed by 2 hours of reperfusion (WIR). A group of aged rats received simvastatin for 3 days before WIR. Endothelial phenotype, parenchymal injury, oxidative and nitrosative stress, and fenestrae dynamics were analyzed. The effects of WIR and simvastatin were investigated in primary LSEC from aged animals. The results of this study demonstrated that WIR significantly damages the liver endothelium and its effects are markedly worse in old animals. WIR-aged livers exhibited reduced vasodilation and sinusoidal capillarization, associated with liver damage and cellular stress. Simvastatin prevented the detrimental effects of WIR in aged livers. In conclusion, the liver sinusoidal endothelium of old animals is highly vulnerable to acute insult, thus targeted protection is especially relevant in preventing liver damage. Simvastatin represents a useful therapeutic strategy in aging.
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Affiliation(s)
- Diana Hide
- Liver Vascular Biology Research Group, Barcelona Hepatic Hemodynamic Laboratory, IDIBAPS Biomedical Research Institute, University of Barcelona Medical School, Barcelona, Spain.,Biomedical Research Network Center in Hepatic and Digestive Diseases (CIBEREHD), Madrid, Spain
| | - Alessandra Warren
- Center for Education and Research on Ageing & ANZAC Research Institute, University of Sydney and Concord Hospital, Australia
| | - Anabel Fernández-Iglesias
- Liver Vascular Biology Research Group, Barcelona Hepatic Hemodynamic Laboratory, IDIBAPS Biomedical Research Institute, University of Barcelona Medical School, Barcelona, Spain.,Biomedical Research Network Center in Hepatic and Digestive Diseases (CIBEREHD), Madrid, Spain
| | - Raquel Maeso-Díaz
- Liver Vascular Biology Research Group, Barcelona Hepatic Hemodynamic Laboratory, IDIBAPS Biomedical Research Institute, University of Barcelona Medical School, Barcelona, Spain
| | - Carmen Peralta
- Biomedical Research Network Center in Hepatic and Digestive Diseases (CIBEREHD), Madrid, Spain.,Protective Strategies Against Hepatic Ischemia-Reperfusion Group, IDIBAPS, Barcelona, Spain
| | - David G Le Couteur
- Center for Education and Research on Ageing & ANZAC Research Institute, University of Sydney and Concord Hospital, Australia
| | - Jaime Bosch
- Liver Vascular Biology Research Group, Barcelona Hepatic Hemodynamic Laboratory, IDIBAPS Biomedical Research Institute, University of Barcelona Medical School, Barcelona, Spain.,Biomedical Research Network Center in Hepatic and Digestive Diseases (CIBEREHD), Madrid, Spain.,Hepatology, Department of Biomedical Research, Inselspital, Bern University, Switzerland
| | - Victoria C Cogger
- Center for Education and Research on Ageing & ANZAC Research Institute, University of Sydney and Concord Hospital, Australia
| | - Jordi Gracia-Sancho
- Liver Vascular Biology Research Group, Barcelona Hepatic Hemodynamic Laboratory, IDIBAPS Biomedical Research Institute, University of Barcelona Medical School, Barcelona, Spain.,Biomedical Research Network Center in Hepatic and Digestive Diseases (CIBEREHD), Madrid, Spain.,Hepatology, Department of Biomedical Research, Inselspital, Bern University, Switzerland
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17
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Bernier M, Mitchell SJ, Wahl D, Diaz A, Singh A, Seo W, Wang M, Ali A, Kaiser T, Price NL, Aon MA, Kim EY, Petr MA, Cai H, Warren A, Di Germanio C, Di Francesco A, Fishbein K, Guiterrez V, Harney D, Koay YC, Mach J, Enamorado IN, Pulpitel T, Wang Y, Zhang J, Zhang L, Spencer RG, Becker KG, Egan JM, Lakatta EG, O'Sullivan J, Larance M, LeCouteur DG, Cogger VC, Gao B, Fernandez-Hernando C, Cuervo AM, de Cabo R. Disulfiram Treatment Normalizes Body Weight in Obese Mice. Cell Metab 2020; 32:203-214.e4. [PMID: 32413333 PMCID: PMC7957855 DOI: 10.1016/j.cmet.2020.04.019] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/02/2020] [Accepted: 04/24/2020] [Indexed: 02/08/2023]
Abstract
Obesity is a top public health concern, and a molecule that safely treats obesity is urgently needed. Disulfiram (known commercially as Antabuse), an FDA-approved treatment for chronic alcohol addiction, exhibits anti-inflammatory properties and helps protect against certain types of cancer. Here, we show that in mice disulfiram treatment prevented body weight gain and abrogated the adverse impact of an obesogenic diet on insulin responsiveness while mitigating liver steatosis and pancreatic islet hypertrophy. Additionally, disulfiram treatment reversed established diet-induced obesity and metabolic dysfunctions in middle-aged mice. Reductions in feeding efficiency and increases in energy expenditure were associated with body weight regulation in response to long-term disulfiram treatment. Loss of fat tissue and an increase in liver fenestrations were also observed in rats on disulfiram. Given the potent anti-obesogenic effects in rodents, repurposing disulfiram in the clinic could represent a new strategy to treat obesity and its metabolic comorbidities.
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Affiliation(s)
- Michel Bernier
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA.
| | - Sarah J Mitchell
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Devin Wahl
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA; Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia; Ageing and Alzheimer's Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord, NSW 2139, Australia
| | - Antonio Diaz
- Department of Developmental and Molecular Biology, Institute for Aging Studies, Albert Einstein College of Medicine, New York, NY 10461, USA
| | - Abhishek Singh
- Vascular Biology and Therapeutics Program, Integrative Cell Signaling and Neurobiology of Metabolism Program, Department of Comparative Medicine, Department of Pathology, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Wonhyo Seo
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892, USA
| | - Mingy Wang
- Laboratory of Cardiovascular Science, Intramural Research Program, National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Ahmed Ali
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Tamzin Kaiser
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Nathan L Price
- Vascular Biology and Therapeutics Program, Integrative Cell Signaling and Neurobiology of Metabolism Program, Department of Comparative Medicine, Department of Pathology, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Miguel A Aon
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA; Laboratory of Cardiovascular Science, Intramural Research Program, National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Eun-Young Kim
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA; Functional Genomics Research Center, KRIBB, Daejeon 305-806, Republic of Korea
| | - Michael A Petr
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Huan Cai
- Laboratory of Clinical Investigation, Intramural Research Program, National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Alessa Warren
- Ageing and Alzheimer's Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord, NSW 2139, Australia
| | - Clara Di Germanio
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Andrea Di Francesco
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Ken Fishbein
- Laboratory of Clinical Investigation, Intramural Research Program, National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Vince Guiterrez
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Dylan Harney
- Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia
| | - Yen Chin Koay
- Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia; Heart Research Institute, The University of Sydney, Sydney, NSW 2042, Australia
| | - John Mach
- Kolling Institute of Medical Research and Sydney Medical School, University of Sydney, Sydney, NSW 2065, Australia
| | - Ignacio Navas Enamorado
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Tamara Pulpitel
- Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia; Ageing and Alzheimer's Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord, NSW 2139, Australia
| | - Yushi Wang
- Laboratory of Cardiovascular Science, Intramural Research Program, National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Jing Zhang
- Laboratory of Cardiovascular Science, Intramural Research Program, National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Li Zhang
- Laboratory of Cardiovascular Science, Intramural Research Program, National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Richard G Spencer
- Laboratory of Clinical Investigation, Intramural Research Program, National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Kevin G Becker
- Laboratory of Genetics, Intramural Research Program, National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Josephine M Egan
- Laboratory of Clinical Investigation, Intramural Research Program, National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - Edward G Lakatta
- Laboratory of Cardiovascular Science, Intramural Research Program, National Institute on Aging, NIH, Baltimore, MD 21224, USA
| | - John O'Sullivan
- Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia; Heart Research Institute, The University of Sydney, Sydney, NSW 2042, Australia
| | - Mark Larance
- Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia
| | - David G LeCouteur
- Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia; Ageing and Alzheimer's Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord, NSW 2139, Australia
| | - Victoria C Cogger
- Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia; Ageing and Alzheimer's Institute, ANZAC Research Institute, Concord Clinical School/Sydney Medical School, Concord, NSW 2139, Australia
| | - Bin Gao
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892, USA
| | - Carlos Fernandez-Hernando
- Vascular Biology and Therapeutics Program, Integrative Cell Signaling and Neurobiology of Metabolism Program, Department of Comparative Medicine, Department of Pathology, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Ana Maria Cuervo
- Department of Developmental and Molecular Biology, Institute for Aging Studies, Albert Einstein College of Medicine, New York, NY 10461, USA
| | - Rafael de Cabo
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA.
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18
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Pandey E, Nour AS, Harris EN. Prominent Receptors of Liver Sinusoidal Endothelial Cells in Liver Homeostasis and Disease. Front Physiol 2020; 11:873. [PMID: 32848838 PMCID: PMC7396565 DOI: 10.3389/fphys.2020.00873] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 06/29/2020] [Indexed: 12/12/2022] Open
Abstract
Liver sinusoidal endothelial cells (LSECs) are the most abundant non-parenchymal cells lining the sinusoidal capillaries of the hepatic system. LSECs are characterized with numerous fenestrae and lack basement membrane as well as a diaphragm. These unique morphological characteristics of LSECs makes them the most permeable endothelial cells of the mammalian vasculature and aid in regulating flow of macromolecules and small lipid-based structures between sinusoidal blood and parenchymal cells. LSECs have a very high endocytic capacity aided by scavenger receptors (SR), such as SR-A, SR-B (SR-B1 and CD-36), SR-E (Lox-1 and mannose receptors), and SR-H (Stabilins). Other high-affinity receptors for mediating endocytosis include the FcγRIIb, which assist in the antibody-mediated removal of immune complexes. Complemented with intense lysosomal activity, LSECs play a vital role in the uptake and degradation of many blood borne waste macromolecules and small (<280 nm) colloids. Currently, seven Toll-like receptors have been investigated in LSECs, which are involved in the recognition and clearance of pathogen-associated molecular pattern (PAMPs) as well as damage associated molecular pattern (DAMP). Along with other SRs, LSECs play an essential role in maintaining lipid homeostasis with the low-density lipoprotein receptor-related protein-1 (LRP-1), in juxtaposition with hepatocytes. LSECs co-express two surface lectins called L-Specific Intercellular adhesion molecule-3 Grabbing Non-integrin Receptor (L-SIGN) and liver sinusoidal endothelial cell lectin (LSECtin). LSECs also express several adhesion molecules which are involved in the recruitment of leukocytes at the site of inflammation. Here, we review these cell surface receptors as well as other components expressed by LSECs and their functions in the maintenance of liver homeostasis. We further discuss receptor expression and activity and dysregulation associated with the initiation and progression of many liver diseases, such as hepatocellular carcinoma, liver fibrosis, and cirrhosis, alcoholic and non-alcoholic fatty liver diseases and pseudocapillarization with aging.
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Affiliation(s)
- Ekta Pandey
- Department of Biochemistry, Universityof Nebraska, Lincoln, NE, United States
| | - Aiah S Nour
- Department of Biochemistry, Universityof Nebraska, Lincoln, NE, United States
| | - Edward N Harris
- Department of Biochemistry, Universityof Nebraska, Lincoln, NE, United States
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19
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Abstract
Data obtained from genetically modified mouse models suggest a detrimental role for p16High senescent cells in physiological aging and age-related pathologies. Our recent analysis of aging mice revealed a continuous and noticeable accumulation of liver sinusoid endothelial cells (LSECs) expressing numerous senescence markers, including p16. At early stage, senescent LSECs show an enhanced ability to clear macromolecular waste and toxins including oxidized LDL (oxLDL). Later in life, however, the efficiency of this important detoxifying function rapidly declines potentially due to increased endothelial thickness and senescence-induced silencing of scavenger receptors and endocytosis genes. This inability to detoxify toxins and macromolecular waste, which can be further exacerbated by increased intestinal leakiness with age, might be an important contributing factor to animal death. Here, we propose how LSEC senescence could serve as an endogenous clock that ultimately controls longevity and outline some of the possible approaches to extend the lifespan.
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20
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Zapotoczny B, Braet F, Kus E, Ginda-Mäkelä K, Klejevskaja B, Campagna R, Chlopicki S, Szymonski M. Actin-spectrin scaffold supports open fenestrae in liver sinusoidal endothelial cells. Traffic 2019; 20:932-942. [PMID: 31569283 PMCID: PMC6899910 DOI: 10.1111/tra.12700] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 09/16/2019] [Accepted: 09/17/2019] [Indexed: 01/11/2023]
Abstract
Fenestrae are open transmembrane pores that are a structural hallmark of healthy liver sinusoidal endothelial cells (LSECs). Their key role is the transport of solutes and macromolecular complexes between the sinusoidal lumen and the space of Disse. To date, the biochemical nature of the cytoskeleton elements that surround the fenestrae and sieve plates in LSECs remain largely elusive. Herein, we took advantage of the latest developments in atomic force imaging and super‐resolution fluorescence nanoscopy to define the organization of the supramolecular complex(es) that surround the fenestrae. Our data revealed that spectrin, together with actin, lines the inner cell membrane and provided direct structural support to the membrane‐bound pores. We conclusively demonstrated that diamide and iodoacetic acid (IAA) affect fenestrae number by destabilizing the LSEC actin‐spectrin scaffold. Furthermore, IAA induces rapid and repeatable switching between the open vs closed state of the fenestrae, indicating that the spectrin‐actin complex could play an important role in controlling the pore number. Our results suggest that spectrin functions as a key regulator in the structural preservation of the fenestrae, and as such, it might serve as a molecular target for altering transendothelial permeability.
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Affiliation(s)
- Bartlomiej Zapotoczny
- Centre for Nanometer-Scale Science and Advanced Materials, NANOSAM, Faculty of Physics, Astronomy, and Applied Computer Science, Jagiellonian University, Krakow, Poland
| | - Filip Braet
- School of Medical Sciences (Discipline of Anatomy and Histology) - Cellular Imaging Facility, Charles Perkins Centre - Australian Centre for Microscopy & Microanalysis, The University of Sydney, New South Wales, Australia
| | - Edyta Kus
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | | | | | - Roberto Campagna
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland
| | - Stefan Chlopicki
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland.,Chair of Pharmacology, Jagiellonian University Medical College, Krakow, Poland
| | - Marek Szymonski
- Centre for Nanometer-Scale Science and Advanced Materials, NANOSAM, Faculty of Physics, Astronomy, and Applied Computer Science, Jagiellonian University, Krakow, Poland
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21
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Hammoutene A, Rautou PE. Role of liver sinusoidal endothelial cells in non-alcoholic fatty liver disease. J Hepatol 2019; 70:1278-1291. [PMID: 30797053 DOI: 10.1016/j.jhep.2019.02.012] [Citation(s) in RCA: 166] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 02/10/2019] [Accepted: 02/13/2019] [Indexed: 12/12/2022]
Abstract
Non-alcoholic fatty liver disease (NAFLD) and its complications are an expanding health problem associated with the metabolic syndrome. Liver sinusoidal endothelial cells (LSECs) are highly specialized endothelial cells localized at the interface between the blood derived from the gut and the adipose tissue on the one side, and other liver cells on the other side. In physiological conditions, LSECs are gatekeepers of liver homeostasis. LSECs display anti-inflammatory and anti-fibrogenic properties by preventing Kupffer cell and hepatic stellate cell activation and regulating intrahepatic vascular resistance and portal pressure. This review focusses on changes occurring in LSECs in NAFLD and on their consequences on NAFLD progression and complications. Capillarization, namely the loss of LSEC fenestrae, and LSEC dysfunction, namely the loss of the ability of LSECs to generate vasodilator agents in response to increased shear stress both occur early in NAFLD. These LSEC changes favour steatosis development and set the stage for NAFLD progression. At the stage of non-alcoholic steatohepatitis, altered LSECs release inflammatory mediators and contribute to the recruitment of inflammatory cells, thus promoting liver injury and inflammation. Altered LSECs also fail to maintain hepatic stellate cell quiescence and release fibrogenic mediators, including Hedgehog signalling molecules, promoting liver fibrosis. Liver angiogenesis is increased in NAFLD and contributes to liver inflammation and fibrosis, but also to hepatocellular carcinoma development. Thus, improving LSEC health appears to be a promising approach to prevent NAFLD progression and complications.
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Affiliation(s)
- Adel Hammoutene
- Inserm, UMR-970, Paris Cardiovascular Research Center, PARCC, Paris, France; University Paris Descartes, Paris, France
| | - Pierre-Emmanuel Rautou
- Inserm, UMR-970, Paris Cardiovascular Research Center, PARCC, Paris, France; INSERM, UMR1149, Centre de Recherche sur l'Inflammation, Paris, France; University Paris Diderot, Paris, France; Service d'Hépatologie, Centre de Référence des Maladies Vasculaires du Foie, DHU Unity, Pôle des Maladies de l'Appareil Digestif, Hôpital Beaujon, AP-HP, Clichy, France.
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22
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Novel targets for delaying aging: The importance of the liver and advances in drug delivery. Adv Drug Deliv Rev 2018; 135:39-49. [PMID: 30248361 DOI: 10.1016/j.addr.2018.09.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 09/14/2018] [Accepted: 09/18/2018] [Indexed: 02/07/2023]
Abstract
Age-related changes in liver function have a significant impact on systemic aging and susceptibility to age-related diseases. Nutrient sensing pathways have emerged as important targets for the development of drugs that delay aging and the onset age-related diseases. This supports a central role for the hepatic regulation of metabolism in the association between nutrition and aging. Recently, a role for liver sinusoidal endothelial cells (LSECs) in the relationship between aging and metabolism has also been proposed. Age-related loss of fenestrations within LSECs impairs the transfer of substrates (such as lipoproteins and insulin) between sinusoidal blood and hepatocytes, resulting in post-prandial hyperlipidemia and insulin resistance. Targeted drug delivery methods such as nanoparticles and quantum dots will facilitate the direct delivery of drugs that regulate fenestrations in LSECs, providing an innovative approach to ameliorating age-related diseases and increasing healthspan.
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23
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Liu C, Shen YJ, Tu QB, Zhao YR, Guo H, Wang J, Zhang L, Shi HW, Sun Y. Pedunculoside, a novel triterpene saponin extracted from Ilex rotunda, ameliorates high-fat diet induced hyperlipidemia in rats. Biomed Pharmacother 2018. [PMID: 29518607 DOI: 10.1016/j.biopha.2018.02.131] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Pedunculoside (PE) is a novel triterpene saponin extracted from the dried barks of Ilex rotunda Thunb. The present study aims to explore lipid-lowering effects of PE on hyperlipidemia rat induced by high-fat diet. The rats were fed with the high-fat diet and subjected to intragastric administration of PE at doses of 30, 15, or 5 mg/kg daily for 7 weeks. The results demonstrated that treatment with PE for 7-week dramatically decreased serum total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C) and reduced liver TC in hyperlipidemia rat induced by high-fat diet. Furthermore, the results also showed that PE modulated the expression of enzymes involved in lipid metabolism including peroxisome proliferator-activated receptor α (PPAR-α), sterol regulatory element-binding protein 1 (SREBP-1), fatty acid synthase (FAS) and stearoyl CoA desaturase-1 (SCD-1) mRNA in liver. Besides, PE-treated group decreased weights and diameters of epididymal adipose hyperlipidemia rat. Mechanism study demonstrated that PE regulated PPAR-γ, CCAAT/Enhancer-binding Protein α (C/EBPα)、and SREBP-1 expression as well as inhibited phosphorylation of AMPK in MDI (methylisobutylxanthine, dexamethasone, insulin) induced-3T3L1 cells. Molecular Docking confirmed interaction between PE with proteins involving PPAR-γ, C/EBPα and SREBP-1. In summary, these findings may support that PE is a novel lipid-lowering drug candidate.
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Affiliation(s)
- Chang Liu
- College of Medicine, Yangzhou University, Yangzhou 225001, Jiangsu, PR China; School of Pharmacy, University of Rhode Island, RI, 02881, United States
| | - Yan-Jun Shen
- College of Medicine, Yangzhou University, Yangzhou 225001, Jiangsu, PR China
| | - Qing-Bo Tu
- College of Hanlin, Nanjing University of China Medicine, Taizhou 225300, Jiangsu, PR China
| | - Yan-Ran Zhao
- College of Hanlin, Nanjing University of China Medicine, Taizhou 225300, Jiangsu, PR China
| | - Hao Guo
- School of Pharmacy, University of Rhode Island, RI, 02881, United States; Department of Dermatology, No. 1 Hospital of China Medical University, 155N. Nanjing Street, Shenyang 110001, PR China
| | - Juan Wang
- College of Medicine, Yangzhou University, Yangzhou 225001, Jiangsu, PR China; College of Hanlin, Nanjing University of China Medicine, Taizhou 225300, Jiangsu, PR China
| | - Li Zhang
- School of Pharmacy, University of Missouri-Kansas City, MO, 64108, United States
| | - Hua-Wei Shi
- College of Medicine, Yangzhou University, Yangzhou 225001, Jiangsu, PR China
| | - Yun Sun
- College of Medicine, Yangzhou University, Yangzhou 225001, Jiangsu, PR China; College of Hanlin, Nanjing University of China Medicine, Taizhou 225300, Jiangsu, PR China.
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24
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Ni Y, Li JM, Liu MK, Zhang TT, Wang DP, Zhou WH, Hu LZ, Lv WL. Pathological process of liver sinusoidal endothelial cells in liver diseases. World J Gastroenterol 2017; 23:7666-7677. [PMID: 29209108 PMCID: PMC5703927 DOI: 10.3748/wjg.v23.i43.7666] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 09/13/2017] [Accepted: 09/28/2017] [Indexed: 02/06/2023] Open
Abstract
Cirrhosis develops from liver fibrosis and is the severe pathological stage of all chronic liver injury. Cirrhosis caused by hepatitis B virus and hepatitis C virus infection is especially common. Liver fibrosis and cirrhosis involve excess production of extracellular matrix, which is closely related to liver sinusoidal endothelial cells (LSECs). Damaged LSECs can synthesize transforming growth factor-beta and platelet-derived growth factor, which activate hepatic stellate cells and facilitate the synthesis of extracellular matrix. Herein, we highlight the angiogenic cytokines of LSECs related to liver fibrosis and cirrhosis at different stages and focus on the formation and development of liver fibrosis and cirrhosis. Inhibition of LSEC angiogenesis and antiangiogenic therapy are described in detail. Targeting LSECs has high therapeutic potential for liver diseases. Further understanding of the mechanism of action will provide stronger evidence for the development of anti-LSEC drugs and new directions for diagnosis and treatment of liver diseases.
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MESH Headings
- Angiogenesis Inhibitors/pharmacology
- Angiogenesis Inhibitors/therapeutic use
- Animals
- Cytokines/metabolism
- Disease Models, Animal
- Endothelial Cells/drug effects
- Endothelial Cells/metabolism
- Endothelial Cells/pathology
- Endothelial Cells/virology
- Extracellular Matrix/metabolism
- Extracellular Matrix/pathology
- Hepacivirus/pathogenicity
- Hepatic Stellate Cells/metabolism
- Hepatic Stellate Cells/pathology
- Hepatic Stellate Cells/virology
- Hepatitis B virus/pathogenicity
- Hepatitis, Viral, Human/diagnosis
- Hepatitis, Viral, Human/drug therapy
- Hepatitis, Viral, Human/pathology
- Hepatitis, Viral, Human/virology
- Humans
- Liver/blood supply
- Liver/cytology
- Liver/pathology
- Liver/virology
- Liver Cirrhosis/diagnosis
- Liver Cirrhosis/drug therapy
- Liver Cirrhosis/pathology
- Liver Cirrhosis/virology
- Neovascularization, Pathologic/drug therapy
- Neovascularization, Pathologic/pathology
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Affiliation(s)
- Yao Ni
- Department of Infection, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China
| | - Juan-Mei Li
- Department of Infection, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China
| | - Ming-Kun Liu
- Department of Infection, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China
| | - Ting-Ting Zhang
- Department of Infection, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China
| | - Dong-Ping Wang
- Department of Infection, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China
| | - Wen-Hui Zhou
- Department of Infection, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China
| | - Ling-Zi Hu
- Department of Infection, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China
| | - Wen-Liang Lv
- Department of Infection, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 100053, China
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25
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Zapotoczny B, Szafranska K, Kus E, Chlopicki S, Szymonski M. Quantification of fenestrations in liver sinusoidal endothelial cells by atomic force microscopy. Micron 2017. [DOI: 10.1016/j.micron.2017.06.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Zapotoczny B, Szafranska K, Owczarczyk K, Kus E, Chlopicki S, Szymonski M. Atomic Force Microscopy Reveals the Dynamic Morphology of Fenestrations in Live Liver Sinusoidal Endothelial Cells. Sci Rep 2017; 7:7994. [PMID: 28801568 PMCID: PMC5554186 DOI: 10.1038/s41598-017-08555-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 07/13/2017] [Indexed: 12/19/2022] Open
Abstract
Here, we report an atomic force microscopy (AFM)-based imaging method for resolving the fine nanostructures (e.g., fenestrations) in the membranes of live primary murine liver sinusoidal endothelial cells (LSECs). From data on topographical and nanomechanical properties of the selected cell areas collected within 1 min, we traced the dynamic rearrangement of the cell actin cytoskeleton connected with the formation or closing of cell fenestrations, both in non-stimulated LSECs as well as in response to cytochalasin B and antimycin A. In conclusion, AFM-based imaging permitted the near real-time measurements of dynamic changes in fenestrations in live LSECs.
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Affiliation(s)
- B Zapotoczny
- Centre for Nanometer-Scale Science and Advanced Materials, NANOSAM, Faculty of Physics, Astronomy, and Applied Computer Science, Jagiellonian University, Krakow, Poland.
| | - K Szafranska
- Centre for Nanometer-Scale Science and Advanced Materials, NANOSAM, Faculty of Physics, Astronomy, and Applied Computer Science, Jagiellonian University, Krakow, Poland.,Jagiellonian Centre for Experimental Therapeutics, JCET, Jagiellonian University, Krakow, Poland
| | - K Owczarczyk
- Centre for Nanometer-Scale Science and Advanced Materials, NANOSAM, Faculty of Physics, Astronomy, and Applied Computer Science, Jagiellonian University, Krakow, Poland
| | - E Kus
- Jagiellonian Centre for Experimental Therapeutics, JCET, Jagiellonian University, Krakow, Poland
| | - S Chlopicki
- Jagiellonian Centre for Experimental Therapeutics, JCET, Jagiellonian University, Krakow, Poland.,Chair of Pharmacology, Jagiellonian University, Medical College, Krakow, Poland
| | - M Szymonski
- Centre for Nanometer-Scale Science and Advanced Materials, NANOSAM, Faculty of Physics, Astronomy, and Applied Computer Science, Jagiellonian University, Krakow, Poland
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Kochan K, Kus E, Filipek A, Szafrańska K, Chlopicki S, Baranska M. Label-free spectroscopic characterization of live liver sinusoidal endothelial cells (LSECs) isolated from the murine liver. Analyst 2017; 142:1308-1319. [DOI: 10.1039/c6an02063a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Imaging with the use of Raman spectroscopy enables the characterization and distinction of live cells that were freshly isolated from murine livers.
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Affiliation(s)
- K. Kochan
- Centre for Biospectroscopy and School of Chemistry
- Monash University
- Clayton
- Australia
- Jagiellonian Centre for Experimental Therapeutics (JCET)
| | - E. Kus
- Jagiellonian Centre for Experimental Therapeutics (JCET)
- Jagiellonian University
- Krakow
- Poland
| | - A. Filipek
- Jagiellonian Centre for Experimental Therapeutics (JCET)
- Jagiellonian University
- Krakow
- Poland
- Faculty of Chemistry
| | - K. Szafrańska
- Jagiellonian Centre for Experimental Therapeutics (JCET)
- Jagiellonian University
- Krakow
- Poland
| | - S. Chlopicki
- Jagiellonian Centre for Experimental Therapeutics (JCET)
- Jagiellonian University
- Krakow
- Poland
- Chair of Pharmacology
| | - M. Baranska
- Jagiellonian Centre for Experimental Therapeutics (JCET)
- Jagiellonian University
- Krakow
- Poland
- Faculty of Chemistry
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Mohamad M, Mitchell SJ, Wu LE, White MY, Cordwell SJ, Mach J, Solon‐Biet SM, Boyer D, Nines D, Das A, Catherine Li S, Warren A, Hilmer SN, Fraser R, Sinclair DA, Simpson SJ, Cabo R, Le Couteur DG, Cogger VC. Ultrastructure of the liver microcirculation influences hepatic and systemic insulin activity and provides a mechanism for age-related insulin resistance. Aging Cell 2016; 15:706-15. [PMID: 27095270 PMCID: PMC4933657 DOI: 10.1111/acel.12481] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/18/2016] [Indexed: 12/16/2022] Open
Abstract
While age‐related insulin resistance and hyperinsulinemia are usually considered to be secondary to changes in muscle, the liver also plays a key role in whole‐body insulin handling and its role in age‐related changes in insulin homeostasis is largely unknown. Here, we show that patent pores called ‘fenestrations’ are essential for insulin transfer across the liver sinusoidal endothelium and that age‐related loss of fenestrations causes an impaired insulin clearance and hyperinsulinemia, induces hepatic insulin resistance, impairs hepatic insulin signaling, and deranges glucose homeostasis. To further define the role of fenestrations in hepatic insulin signaling without any of the long‐term adaptive responses that occur with aging, we induced acute defenestration using poloxamer 407 (P407), and this replicated many of the age‐related changes in hepatic glucose and insulin handling. Loss of fenestrations in the liver sinusoidal endothelium is a hallmark of aging that has previously been shown to cause deficits in hepatic drug and lipoprotein metabolism and now insulin. Liver defenestration thus provides a new mechanism that potentially contributes to age‐related insulin resistance.
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Affiliation(s)
- Mashani Mohamad
- Ageing and Alzheimers Institute Centre for Education and Research on Ageing University of Sydney and Concord Hospital Sydney NSW Australia
- ANZAC Research Institute University of Sydney and Concord Hospital Sydney NSW Australia
- Faculty of Pharmacy Universiti Teknologi MARA Selangor Malaysia
| | - Sarah Jayne Mitchell
- Translational Gerontology Branch National Institute on Aging National Institutes of Health Baltimore MD USA
| | - Lindsay Edward Wu
- Laboratory for Ageing Research School of Medical Sciences University of New South Wales Sydney NSW Australia
| | | | | | - John Mach
- Kolling Institute of Medical Research Royal North Shore Hospital and University of Sydney Sydney NSW Australia
| | - Samantha Marie Solon‐Biet
- Ageing and Alzheimers Institute Centre for Education and Research on Ageing University of Sydney and Concord Hospital Sydney NSW Australia
- ANZAC Research Institute University of Sydney and Concord Hospital Sydney NSW Australia
- Charles Perkins Centre University of Sydney Sydney NSW Australia
| | - Dawn Boyer
- Translational Gerontology Branch National Institute on Aging National Institutes of Health Baltimore MD USA
| | - Dawn Nines
- Translational Gerontology Branch National Institute on Aging National Institutes of Health Baltimore MD USA
| | - Abhirup Das
- Laboratory for Ageing Research School of Medical Sciences University of New South Wales Sydney NSW Australia
| | - Shi‐Yun Catherine Li
- Laboratory for Ageing Research School of Medical Sciences University of New South Wales Sydney NSW Australia
| | - Alessandra Warren
- Ageing and Alzheimers Institute Centre for Education and Research on Ageing University of Sydney and Concord Hospital Sydney NSW Australia
- ANZAC Research Institute University of Sydney and Concord Hospital Sydney NSW Australia
| | - Sarah Nicole Hilmer
- Kolling Institute of Medical Research Royal North Shore Hospital and University of Sydney Sydney NSW Australia
| | - Robin Fraser
- Department of Pathology University of Otago Christchurch New Zealand
| | - David Andrew Sinclair
- Laboratory for Ageing Research School of Medical Sciences University of New South Wales Sydney NSW Australia
- Department of Genetics Harvard Medical School Boston MA USA
| | | | - Rafael Cabo
- Translational Gerontology Branch National Institute on Aging National Institutes of Health Baltimore MD USA
| | - David George Le Couteur
- Ageing and Alzheimers Institute Centre for Education and Research on Ageing University of Sydney and Concord Hospital Sydney NSW Australia
- ANZAC Research Institute University of Sydney and Concord Hospital Sydney NSW Australia
- Charles Perkins Centre University of Sydney Sydney NSW Australia
| | - Victoria Carroll Cogger
- Ageing and Alzheimers Institute Centre for Education and Research on Ageing University of Sydney and Concord Hospital Sydney NSW Australia
- ANZAC Research Institute University of Sydney and Concord Hospital Sydney NSW Australia
- Charles Perkins Centre University of Sydney Sydney NSW Australia
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Demetris AJ, Bellamy COC, Gandhi CR, Prost S, Nakanuma Y, Stolz DB. Functional Immune Anatomy of the Liver-As an Allograft. Am J Transplant 2016; 16:1653-80. [PMID: 26848550 DOI: 10.1111/ajt.13749] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 01/26/2016] [Accepted: 01/28/2016] [Indexed: 01/25/2023]
Abstract
The liver is an immunoregulatory organ in which a tolerogenic microenvironment mitigates the relative "strength" of local immune responses. Paradoxically, necro-inflammatory diseases create the need for most liver transplants. Treatment of hepatitis B virus, hepatitis C virus, and acute T cell-mediated rejection have redirected focus on long-term allograft structural integrity. Understanding of insults should enable decades of morbidity-free survival after liver replacement because of these tolerogenic properties. Studies of long-term survivors show low-grade chronic inflammatory, fibrotic, and microvascular lesions, likely related to some combination of environment insults (i.e. abnormal physiology), donor-specific antibodies, and T cell-mediated immunity. The resultant conundrum is familiar in transplantation: adequate immunosuppression produces chronic toxicities, while lightened immunosuppression leads to sensitization, immunological injury, and structural deterioration. The "balance" is more favorable for liver than other solid organ allografts. This occurs because of unique hepatic immune physiology and provides unintended benefits for allografts by modulating various afferent and efferent limbs of allogenic immune responses. This review is intended to provide a better understanding of liver immune microanatomy and physiology and thereby (a) the potential structural consequences of low-level, including allo-antibody-mediated injury; and (b) how liver allografts modulate immune reactions. Special attention is given to the microvasculature and hepatic mononuclear phagocytic system.
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Affiliation(s)
- A J Demetris
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - C O C Bellamy
- Department of Pathology, University of Edinburgh, Edinburgh, Scotland, UK
| | - C R Gandhi
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center and Department of Surgery, University of Cincinnati, Cincinnati, OH
| | - S Prost
- Department of Pathology, University of Edinburgh, Edinburgh, Scotland, UK
| | - Y Nakanuma
- Department of Diagnostic Pathology, Shizuoka Cancer Center, Shizuoka, Japan
| | - D B Stolz
- Center for Biologic Imaging, Cell Biology, University of Pittsburgh, Pittsburgh, PA
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Extracellular Vesicles: A New Frontier in Biomarker Discovery for Non-Alcoholic Fatty Liver Disease. Int J Mol Sci 2016; 17:376. [PMID: 26985892 PMCID: PMC4813235 DOI: 10.3390/ijms17030376] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 03/01/2016] [Accepted: 03/02/2016] [Indexed: 12/14/2022] Open
Abstract
In recent years, the global burden of obesity and diabetes has seen a parallel rise in other metabolic complications, such as non-alcoholic fatty liver disease (NAFLD). This condition, once thought to be a benign accumulation of hepatic fat, is now recognized as a serious and prevalent disorder that is conducive to inflammation and fibrosis. Despite the rising incidence of NAFLD, there is currently no reliable method for its diagnosis or staging besides the highly invasive tissue biopsy. This limitation has resulted in the study of novel circulating markers as potential candidates, one of the most popular being extracellular vesicles (EVs). These submicron membrane-bound structures are secreted from stressed and activated cells, or are formed during apoptosis, and are known to be involved in intercellular communication. The cargo of EVs depends upon the parent cell and has been shown to be changed in disease, as is their abundance in the circulation. The role of EVs in immunity and epigenetic regulation is widely attested, and studies showing a correlation with disease severity have made these structures a favorable target for diagnostic as well as therapeutic purposes. This review will highlight the research that is available on EVs in the context of NAFLD, the current limitations, and projections for their future utility in a clinical setting.
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Cogger VC, Mohamad M, Solon-Biet SM, Senior AM, Warren A, O'Reilly JN, Tung BT, Svistounov D, McMahon AC, Fraser R, Raubenheimer D, Holmes AJ, Simpson SJ, Le Couteur DG. Dietary macronutrients and the aging liver sinusoidal endothelial cell. Am J Physiol Heart Circ Physiol 2016; 310:H1064-70. [PMID: 26921440 DOI: 10.1152/ajpheart.00949.2015] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 02/24/2016] [Indexed: 02/07/2023]
Abstract
Fenestrations are pores within the liver sinusoidal endothelial cells (LSECs) that line the sinusoids of the highly vascularized liver. Fenestrations facilitate the transfer of substrates between blood and hepatocytes. With pseudocapillarization of the hepatic sinusoid in old age, there is a loss of fenestrations. LSECs are uniquely exposed to gut-derived dietary and microbial substrates delivered by the portal circulation to the liver. Here we studied the effect of 25 diets varying in content of macronutrients and energy on LSEC fenestrations using the Geometric Framework method in a large cohort of mice aged 15 mo. Macronutrient distribution rather than total food or energy intake was associated with changes in fenestrations. Porosity and frequency were inversely associated with dietary fat intake, while fenestration diameter was inversely associated with protein or carbohydrate intake. Fenestrations were also linked to diet-induced changes in gut microbiome, with increased fenestrations associated with higher abundance of Firmicutes and reduced abundance of Bacteroidetes Diet-induced changes in levels of several fatty acids (C16:0, C19:0, and C20:4) were also significantly inversely associated with fenestrations, suggesting a link between dietary fat and modulation of lipid rafts in the LSECs. Diet influences fenestrations and these data reflect both the key role of the LSECs in clearing gut-derived molecules from the vascular circulation and the impact these molecules have on LSEC morphology.
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Affiliation(s)
- Victoria Carroll Cogger
- Aging and Alzheimers Institute and ANZAC Research Institute, University of Sydney and Concord Hospital, Sydney, Australia; Charles Perkins Centre, University of Sydney, Sydney, Australia
| | - Mashani Mohamad
- Aging and Alzheimers Institute and ANZAC Research Institute, University of Sydney and Concord Hospital, Sydney, Australia; Faculty of Pharmacy, Universiti Teknologi MARA, Bandar Puncak Alam, Selangor, Malaysia
| | - Samantha Marie Solon-Biet
- Aging and Alzheimers Institute and ANZAC Research Institute, University of Sydney and Concord Hospital, Sydney, Australia; Charles Perkins Centre, University of Sydney, Sydney, Australia
| | - Alistair M Senior
- Charles Perkins Centre, University of Sydney, Sydney, Australia; The School of Mathematics and Statistics, University of Sydney, Sydney, Australia
| | - Alessandra Warren
- Aging and Alzheimers Institute and ANZAC Research Institute, University of Sydney and Concord Hospital, Sydney, Australia
| | - Jennifer Nicole O'Reilly
- Aging and Alzheimers Institute and ANZAC Research Institute, University of Sydney and Concord Hospital, Sydney, Australia
| | - Bui Thanh Tung
- Aging and Alzheimers Institute and ANZAC Research Institute, University of Sydney and Concord Hospital, Sydney, Australia; Centro Andaluz de Biología del Desarrollo, Universidad Pablo de Olavide CSIC, CIBERER-Instituto de Salud San Carlos III, Carretera de Utrera Km 1, Sevilla, Spain
| | - Dmitri Svistounov
- Aging and Alzheimers Institute and ANZAC Research Institute, University of Sydney and Concord Hospital, Sydney, Australia; Centre for Clinical Research and Education, University Hospital of North Norway, Tromsø, Norway
| | - Aisling Clare McMahon
- Aging and Alzheimers Institute and ANZAC Research Institute, University of Sydney and Concord Hospital, Sydney, Australia; Department of Cardiovascular Sciences, University of Leicester British Heart Foundation Cardiovascular Research Centre, Leicester, United Kingdom
| | - Robin Fraser
- Department of Pathology, University of Otago, and Departments of Surgery, Gastroenterology and Medicine, Canterbury District Health Board, Christchurch, New Zealand; and
| | | | - Andrew J Holmes
- Charles Perkins Centre, University of Sydney, Sydney, Australia; School of Molecular Bioscience, University of Sydney, Sydney, Australia
| | | | - David George Le Couteur
- Aging and Alzheimers Institute and ANZAC Research Institute, University of Sydney and Concord Hospital, Sydney, Australia; Charles Perkins Centre, University of Sydney, Sydney, Australia;
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Sørensen KK, Simon‐Santamaria J, McCuskey RS, Smedsrød B. Liver Sinusoidal Endothelial Cells. Compr Physiol 2015; 5:1751-74. [DOI: 10.1002/cphy.c140078] [Citation(s) in RCA: 156] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Huang LH, Elvington A, Randolph GJ. The role of the lymphatic system in cholesterol transport. Front Pharmacol 2015; 6:182. [PMID: 26388772 PMCID: PMC4557107 DOI: 10.3389/fphar.2015.00182] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 08/12/2015] [Indexed: 11/13/2022] Open
Abstract
Reverse cholesterol transport (RCT) is the pathway for removal of peripheral tissue cholesterol and involves transport of cholesterol back to liver for excretion, starting from cellular cholesterol efflux facilitated by lipid-free apolipoprotein A1 (ApoA1) or other lipidated high-density lipoprotein (HDL) particles within the interstitial space. Extracellular cholesterol then is picked up and transported through the lymphatic vasculature before entering into bloodstream. There is increasing evidence supporting a role for enhanced macrophage cholesterol efflux and RCT in ameliorating atherosclerosis, and recent data suggest that these processes may serve as better diagnostic biomarkers than plasma HDL levels. Hence, it is important to better understand the processes governing ApoA1 and HDL influx into peripheral tissues from the bloodstream, modification and facilitation of cellular cholesterol removal within the interstitial space, and transport through the lymphatic vasculature. New findings will complement therapeutic strategies for the treatment of atherosclerotic vascular disease.
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Affiliation(s)
- Li-Hao Huang
- Department of Pathology and Immunology, Washington University School of Medicine , St. Louis, MO, USA
| | - Andrew Elvington
- Department of Pathology and Immunology, Washington University School of Medicine , St. Louis, MO, USA
| | - Gwendalyn J Randolph
- Department of Pathology and Immunology, Washington University School of Medicine , St. Louis, MO, USA
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Mak ACY, Pullinger CR, Tang LF, Wong JS, Deo RC, Schwarz JM, Gugliucci A, Movsesyan I, Ishida BY, Chu C, Poon A, Kim P, Stock EO, Schaefer EJ, Asztalos BF, Castellano JM, Wyss-Coray T, Duncan JL, Miller BL, Kane JP, Kwok PY, Malloy MJ. Effects of the absence of apolipoprotein e on lipoproteins, neurocognitive function, and retinal function. JAMA Neurol 2015; 71:1228-36. [PMID: 25111166 DOI: 10.1001/jamaneurol.2014.2011] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
IMPORTANCE The identification of a patient with a rare form of severe dysbetalipoproteinemia allowed the study of the consequences of total absence of apolipoprotein E (apoE). OBJECTIVES To discover the molecular basis of this rare disorder and to determine the effects of complete absence of apoE on neurocognitive and visual function and on lipoprotein metabolism. DESIGN, SETTING, AND PARTICIPANTS Whole-exome sequencing was performed on the patient's DNA. He underwent detailed neurological and visual function testing and lipoprotein analysis. Lipoprotein analysis was also performed in the Cardiovascular Research Institute, University of California, San Francisco, on blood samples from the proband's mother, wife, 2 daughters, and normolipidemic control participants. MAIN OUTCOME MEASURES Whole-exome sequencing, lipoprotein analysis, and neurocognitive function. RESULTS The patient was homozygous for an ablative APOE frameshift mutation (c.291del, p.E97fs). No other mutations likely to contribute to the phenotype were discovered, with the possible exception of two, in ABCC2 (p.I670T) and LIPC (p.G137R). Despite complete absence of apoE, he had normal vision, exhibited normal cognitive, neurological, and retinal function, had normal findings on brain magnetic resonance imaging, and had normal cerebrospinal fluid levels of β-amyloid and tau proteins. He had no significant symptoms of cardiovascular disease except a suggestion of myocardial ischemia on treadmill testing and mild atherosclerosis noted on carotid ultrasonography. He had exceptionally high cholesterol content (760 mg/dL; to convert to millimoles per liter, multiply by 0.0259) and a high cholesterol to triglycerides ratio (1.52) in very low-density lipoproteins with elevated levels of small-diameter high-density lipoproteins, including high levels of prebeta-1 high-density lipoprotein. Intermediate-density lipoproteins, low-density lipoproteins, and very low-density lipoproteins contained elevated apoA-I and apoA-IV levels. The patient's apoC-III and apoC-IV levels were decreased in very low-density lipoproteins. Electron microscopy revealed large lamellar particles having electron-opaque cores attached to electron-lucent zones in intermediate-density and low-density lipoproteins. Low-density lipoprotein particle diameters were distributed bimodally. CONCLUSIONS AND RELEVANCE Despite a profound effect on lipoprotein metabolism, detailed neurocognitive and retinal studies failed to demonstrate any defects. This suggests that functions of apoE in the brain and eye are not essential or that redundant mechanisms exist whereby its role can be fulfilled. Targeted knockdown of apoE in the central nervous system might be a therapeutic modality in neurodegenerative disorders.
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Affiliation(s)
- Angel C Y Mak
- Cardiovascular Research Institute, University of California, San Francisco
| | - Clive R Pullinger
- Cardiovascular Research Institute, University of California, San Francisco
| | - Ling Fung Tang
- Cardiovascular Research Institute, University of California, San Francisco
| | - Jinny S Wong
- Gladstone Institute of Cardiovascular Disease, San Francisco, California
| | - Rahul C Deo
- Cardiovascular Research Institute, University of California, San Francisco
| | - Jean-Marc Schwarz
- College of Osteopathic Medicine, Touro University California, Vallejo
| | | | - Irina Movsesyan
- Cardiovascular Research Institute, University of California, San Francisco
| | | | - Catherine Chu
- Cardiovascular Research Institute, University of California, San Francisco
| | - Annie Poon
- Cardiovascular Research Institute, University of California, San Francisco
| | - Phillip Kim
- Darin M. Camarena Health Centers, Madera, California
| | - Eveline O Stock
- Cardiovascular Research Institute, University of California, San Francisco
| | | | | | - Joseph M Castellano
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, California
| | - Tony Wyss-Coray
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, California7Center for Tissue Regeneration, Repair, and Restoration, VA Palo Alto Health Care System, Palo Alto, California
| | - Jacque L Duncan
- Department of Ophthalmology, University of California, San Francisco
| | - Bruce L Miller
- Memory and Aging Center, University of California, San Francisco
| | - John P Kane
- Cardiovascular Research Institute, University of California, San Francisco
| | - Pui-Yan Kwok
- Cardiovascular Research Institute, University of California, San Francisco
| | - Mary J Malloy
- Cardiovascular Research Institute, University of California, San Francisco
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Scheibye-Knudsen M, Mitchell SJ, Fang EF, Iyama T, Ward T, Wang J, Dunn CA, Singh N, Veith S, Hasan-Olive MM, Mangerich A, Wilson MA, Mattson MP, Bergersen LH, Cogger VC, Warren A, Le Couteur DG, Moaddel R, Wilson DM, Croteau DL, de Cabo R, Bohr VA. A high-fat diet and NAD(+) activate Sirt1 to rescue premature aging in cockayne syndrome. Cell Metab 2014; 20:840-855. [PMID: 25440059 PMCID: PMC4261735 DOI: 10.1016/j.cmet.2014.10.005] [Citation(s) in RCA: 265] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 07/12/2014] [Accepted: 10/06/2014] [Indexed: 12/15/2022]
Abstract
Cockayne syndrome (CS) is an accelerated aging disorder characterized by progressive neurodegeneration caused by mutations in genes encoding the DNA repair proteins CS group A or B (CSA or CSB). Since dietary interventions can alter neurodegenerative processes, Csb(m/m) mice were given a high-fat, caloric-restricted, or resveratrol-supplemented diet. High-fat feeding rescued the metabolic, transcriptomic, and behavioral phenotypes of Csb(m/m) mice. Furthermore, premature aging in CS mice, nematodes, and human cells results from aberrant PARP activation due to deficient DNA repair leading to decreased SIRT1 activity and mitochondrial dysfunction. Notably, β-hydroxybutyrate levels are increased by the high-fat diet, and β-hydroxybutyrate, PARP inhibition, or NAD(+) supplementation can activate SIRT1 and rescue CS-associated phenotypes. Mechanistically, CSB can displace activated PARP1 from damaged DNA to limit its activity. This study connects two emerging longevity metabolites, β-hydroxybutyrate and NAD(+), through the deacetylase SIRT1 and suggests possible interventions for CS.
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Affiliation(s)
- Morten Scheibye-Knudsen
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Sarah J Mitchell
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA; Sydney Medical School, University of Sydney, Sydney, NSW 2006, Australia
| | - Evandro F Fang
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Teruaki Iyama
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Theresa Ward
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - James Wang
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Christopher A Dunn
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Nagendra Singh
- Laboratory of Clinical Investigation, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Sebastian Veith
- Molecular Toxicology Group, Department of Biology, University of Konstanz, D-78457 Konstanz, Germany
| | - Md Mahdi Hasan-Olive
- Laboratory of Neurosciences, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Aswin Mangerich
- Molecular Toxicology Group, Department of Biology, University of Konstanz, D-78457 Konstanz, Germany
| | - Mark A Wilson
- Laboratory of Neurosciences, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Mark P Mattson
- Laboratory of Neurosciences, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Linda H Bergersen
- The Brain and Muscle Energy Group - Synaptic Neurochemistry Laboratory, Department of Anatomy, Institute of Basic Medical Sciences, University of Oslo, 0317 Oslo, Norway; Danish Center for Healthy Aging, ICMM, University of Copenhagen, Copenhagen, Denmark
| | - Victoria C Cogger
- Sydney Medical School, University of Sydney, Sydney, NSW 2006, Australia; Centre for Education and Research on Ageing and ANZAC Research Institute, Concord Hospital and University of Sydney, Sydney, NSW 2139, Australia
| | - Alessandra Warren
- Centre for Education and Research on Ageing and ANZAC Research Institute, Concord Hospital and University of Sydney, Sydney, NSW 2139, Australia
| | - David G Le Couteur
- Sydney Medical School, University of Sydney, Sydney, NSW 2006, Australia; Centre for Education and Research on Ageing and ANZAC Research Institute, Concord Hospital and University of Sydney, Sydney, NSW 2139, Australia
| | - Ruin Moaddel
- Laboratory of Clinical Investigation, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - David M Wilson
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Deborah L Croteau
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
| | - Rafael de Cabo
- Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA.
| | - Vilhelm A Bohr
- Laboratory of Molecular Gerontology, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA; Danish Center for Healthy Aging, ICMM, University of Copenhagen, Copenhagen, Denmark.
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Zhang Q, Liu J, Liu J, Huang W, Tian L, Quan J, Wang Y, Niu R. oxLDL induces injury and defenestration of human liver sinusoidal endothelial cells via LOX1. J Mol Endocrinol 2014; 53:281-93. [PMID: 25057109 DOI: 10.1530/jme-14-0049] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Non-alcoholic fatty liver disease is associated with hepatic microangiopathy and liver inflammation caused by type 2 diabetes mellitus. Oxidised LDL (oxLDL) is involved in proinflammatory and cytotoxic events in various microcirculatory systems. The lectin-like oxLDL receptor 1 (LOX1) plays a crucial role in oxLDL-induced pathological transformation. However, the underlying mechanism of oxLDL's effects on liver microcirculation disturbances remains unclear. In this study, we investigated the effects of oxLDL on LOX1 (OLR1) expression and function, as well as on the fenestration features of human liver sinusoidal endothelial cells (HLSECs) in vitro. Primary HLSECs were obtained and cultured. The cells were treated with various concentrations of oxLDL (25, 50, 100 and 200 μg/ml), and the cytotoxicity and expression of LOX1 were examined. Furthermore, LOX1 knockdown was performed using siRNA technology, and the changes in intracellular reactive oxygen species (ROS), NFκB, p65, (p65), endothelin 1 (ET1 (EDN1)), eNOS (NOS3) and caveolin 1 (CAV1) levels were measured. Cells were treated with 100 μg/ml oxLDL, and the fenestra morphology was visualised using scanning electron microscopy. oxLDL significantly increased LOX1 expression at both the mRNA and protein levels in HLSECs in a dose- and time-dependent manner. oxLDL stimulation increased ROS generation and NFκB activation, upregulated ET1 and caveolin 1 expression, downregulated eNOS expression and reduced the fenestra diameter and porosity. All of these oxLDL-mediated effects were inhibited after LOX1 knockdown. These results reveal a mechanism by which oxLDL stimulates the production of LOX1 through the ROS/NFκB signalling pathway and by which LOX1 mediates oxLDL-induced endothelial injury and the defenestration of HLSECs.
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Affiliation(s)
- Qi Zhang
- The First Clinical College of Lanzhou University730000 Lanzhou, Gansu, ChinaDepartment of EndocrinologyGansu Provincial Hospital, 204 West Donggang Road, 730000 Lanzhou, Gansu, China
| | - Jing Liu
- The First Clinical College of Lanzhou University730000 Lanzhou, Gansu, ChinaDepartment of EndocrinologyGansu Provincial Hospital, 204 West Donggang Road, 730000 Lanzhou, Gansu, China
| | - Jia Liu
- The First Clinical College of Lanzhou University730000 Lanzhou, Gansu, ChinaDepartment of EndocrinologyGansu Provincial Hospital, 204 West Donggang Road, 730000 Lanzhou, Gansu, China
| | - Wenhui Huang
- The First Clinical College of Lanzhou University730000 Lanzhou, Gansu, ChinaDepartment of EndocrinologyGansu Provincial Hospital, 204 West Donggang Road, 730000 Lanzhou, Gansu, China
| | - Limin Tian
- The First Clinical College of Lanzhou University730000 Lanzhou, Gansu, ChinaDepartment of EndocrinologyGansu Provincial Hospital, 204 West Donggang Road, 730000 Lanzhou, Gansu, China
| | - Jinxing Quan
- The First Clinical College of Lanzhou University730000 Lanzhou, Gansu, ChinaDepartment of EndocrinologyGansu Provincial Hospital, 204 West Donggang Road, 730000 Lanzhou, Gansu, China
| | - Yunfang Wang
- The First Clinical College of Lanzhou University730000 Lanzhou, Gansu, ChinaDepartment of EndocrinologyGansu Provincial Hospital, 204 West Donggang Road, 730000 Lanzhou, Gansu, China
| | - Ruilan Niu
- The First Clinical College of Lanzhou University730000 Lanzhou, Gansu, ChinaDepartment of EndocrinologyGansu Provincial Hospital, 204 West Donggang Road, 730000 Lanzhou, Gansu, China
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Shin HS, Han JM, Kim HG, Choi MK, Son CG, Yoo HR, Jo HK, Seol IC. Anti-atherosclerosis and hyperlipidemia effects of herbal mixture, Artemisia iwayomogi Kitamura and Curcuma longa Linne, in apolipoprotein E-deficient mice. JOURNAL OF ETHNOPHARMACOLOGY 2014; 153:142-150. [PMID: 24508858 DOI: 10.1016/j.jep.2014.01.039] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 12/03/2013] [Accepted: 01/30/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLGICAL RELEVANCE Artemisiaiwayomogi Kitamura and Curcuma longa Linne. (ACE) has been popularly used to treat atherosclerosis as well as hyperlipidemia in the Asian countries. OBJECTIVE Antiatherosclerotic and anti-hyperlipidemic effects of ACE were evaluated at protein and gene expression level by using apoE(-/-) mice. METHOD Apoprotein E deficient (apoE(-/-)) mice were randomly divided into five groups and fed freely Western diet (WD) which contained ACE (50, 100 and 200mg/kg) or curcumin (50mg/kg). The C57/BLJ mice were used as normal and which were fed the WD. After 10 weeks of being fed the WD, the atherosclerosis related mediators and hyperlipidemia induced hepatic steatosis were analyzed in serum, aorta tissue or hepatic tissues. RESULTS Ten-week feeding of WD considerably increased the serum lipid profiles including total cholesterol (TC), low density lipoprotein, high density lipoprotein (HDL), triglyceride, TC/HDL ratio and glucose, and also elevated the total reactive oxygen species (ROS) and inflammatory cytokines (tumor necrosis factor-α, TNF-α; and interlukin-6, IL-6) in the serum levels. ACE treatment significantly resolved these alterations. The aortic lesion formation was significantly decreased as were lipid formations by ACE treatment. Moreover, ACE not only caused significant decreases of the lipid drops on the hepatic tissues, but also restored the antioxidant components. The gene expression levels including SREBP-1c, FAS, SCD-1, PPAR-α, CPT-1, IL-6, IL-1β and TNF-α in hepatic tissue were altered by Western diet fed in apoE(-/-) mice, while ACE treatment significantly normalized those alterations. CONCLUSIONS The ACE treatment is beneficial for atherosclerosis in arterial area and hyperlipidemia induced hepatic tissue steatosis.
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Affiliation(s)
- Hyun-Soo Shin
- Internal Medicine of Cardiovascular, Daejeon Oriental Hospital of Oriental Medical College of Daejeon University, 22-5 Daehung-dong, Jung-gu, Daejeon 301-724, Republic of Korea
| | - Jong-Min Han
- Liver and Immunology Research Center, Daejeon Oriental Hospital of Oriental Medical College of Daejeon University, 22-5 Daehung-dong, Jung-gu, Daejeon 301-724, Republic of Korea
| | - Hyeong-Geug Kim
- Liver and Immunology Research Center, Daejeon Oriental Hospital of Oriental Medical College of Daejeon University, 22-5 Daehung-dong, Jung-gu, Daejeon 301-724, Republic of Korea
| | - Min-Kyung Choi
- Liver and Immunology Research Center, Daejeon Oriental Hospital of Oriental Medical College of Daejeon University, 22-5 Daehung-dong, Jung-gu, Daejeon 301-724, Republic of Korea
| | - Chang-Gue Son
- Internal Medicine of Cardiovascular, Daejeon Oriental Hospital of Oriental Medical College of Daejeon University, 22-5 Daehung-dong, Jung-gu, Daejeon 301-724, Republic of Korea; Liver and Immunology Research Center, Daejeon Oriental Hospital of Oriental Medical College of Daejeon University, 22-5 Daehung-dong, Jung-gu, Daejeon 301-724, Republic of Korea
| | - Ho-Ryong Yoo
- Internal Medicine of Cardiovascular, Daejeon Oriental Hospital of Oriental Medical College of Daejeon University, 22-5 Daehung-dong, Jung-gu, Daejeon 301-724, Republic of Korea
| | - Hyun-Kyung Jo
- Internal Medicine of Cardiovascular, Daejeon Oriental Hospital of Oriental Medical College of Daejeon University, 22-5 Daehung-dong, Jung-gu, Daejeon 301-724, Republic of Korea.
| | - In-Chan Seol
- Internal Medicine of Cardiovascular, Daejeon Oriental Hospital of Oriental Medical College of Daejeon University, 22-5 Daehung-dong, Jung-gu, Daejeon 301-724, Republic of Korea.
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Vreuls C, Wisse E, Duimel H, Stevens K, Verheyen F, Braet F, Driessen A, Koek G. Jet-fixation: a novel method to improve microscopy of human liver needle biopsies. Hepatology 2014; 59:737-9. [PMID: 23729406 DOI: 10.1002/hep.26532] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 05/03/2013] [Accepted: 05/10/2013] [Indexed: 12/17/2022]
Affiliation(s)
- Celien Vreuls
- Department of Pathology, Maastricht University Medical Centre, Maastricht, The Netherlands
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Abstract
Exosomes are lipid nanovesicles released following fusion of the endosoma limiting membrane with the plasma membrane; however, their fate in lymphoid organs after their release remains controversial. We determined that sialoadhesin (CD169; Siglec-1) is required for the capture of B cell-derived exosomes via their surface-expressed α2,3-linked sialic acids. Exosome-capturing macrophages were present in the marginal zone of the spleen and in the subcapsular sinus of the lymph node. In vitro assays performed on spleen and lymph node sections confirmed that exosome binding to CD169 was not solely due to preferential fluid flow to these areas. Although the circulation half-life of exosomes in blood of wild-type and CD169(-/-) mice was similar, exosomes displayed altered distribution in CD169(-/-) mice, with exosomes freely accessing the outer marginal zone rim of SIGN-R1(+) macrophages and F4/80(+) red pulp macrophages. In the lymph node, exosomes were not retained in the subcapsular sinus of CD169(-/-) mice but penetrated deeper into the paracortex. Interestingly, CD169(-/-) mice demonstrated an enhanced response to antigen-pulsed exosomes. This is the first report of a role for CD169 in the capture of exosomes and its potential to mediate the immune response to exosomal antigen.
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Venkatraman L, Tucker-Kellogg L. The CD47-binding peptide of thrombospondin-1 induces defenestration of liver sinusoidal endothelial cells. Liver Int 2013; 33:1386-97. [PMID: 23799952 PMCID: PMC4285809 DOI: 10.1111/liv.12231] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 05/19/2013] [Indexed: 12/16/2022]
Abstract
BACKGROUND & AIMS A fenestrated phenotype is characteristic of liver sinusoidal endothelial cells (LSECs), but liver sinusoids become defenestrated during fibrosis and other liver diseases. Thrombospondin-1 (TSP1) is a matrix glycoprotein with pro-fibrotic effects, and the CD47-binding fragment of TSP1 also has anti-angiogenic effects in endothelial cells. We hypothesized that the CD47-binding fragment of TSP1 could induce defenestration in LSECs through the Rho-Rho kinase (ROCK)-myosin pathway. METHODS Freshly isolated rat LSECs were treated with TSP1 or CD47-binding peptides of TSP1. LSEC fenestration was assessed with scanning electron microscopy, and myosin phosphorylation was assessed with immuno-fluorescence. RESULTS Treating LSECs with TSP1 caused a dose-dependent loss of fenestrae, and this effect could not be blocked by SB-431542, the TGF-β1 receptor inhibitor. A CD47-binding fragment of TSP1, p4N1, was able to induce defenestration, and a CD47-blocking antibody, B6H12, was able to suppress p4N1-induced defenestration. The p4N1 fragment also caused contraction of fenestra size, correlated with an increase in myosin activation. Pretreatment with Y-237642 (a ROCK inhibitor) prevented p4N1-induced myosin activation and fenestrae decrease. Simvastatin has also been shown to antagonize Rho-ROCK signalling, and we found that simvastatin pretreatment protected LSECs from p4N1-induced myosin activation and defenestration. CONCLUSIONS We conclude that CD47 signals through the Rho-ROCK-myosin pathway to induce defenestration in LSECs. In addition, our results show that simvastatin and Y-237642 have a beneficial impact on fenestration in vitro, providing an additional explanation for the efficacy of these compounds for regression of liver fibrosis.
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Affiliation(s)
| | - Lisa Tucker-Kellogg
- Mechanobiology Institute, National University of SingaporeSingapore,Department of Dermatology, School of Medicine, State University of New York at Stony BrookNew York, NY, USA,Singapore-MIT Alliance, National University of SingaporeSingapore
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Cogger VC, Mitchell SJ, Warren A, de Cabo R, Le Couteur DG. Age-related loss of responsiveness to 2,5-dimethoxy-4-iodoamphetamine in liver sinusoidal endothelial cells. J Gerontol A Biol Sci Med Sci 2013; 69:514-8. [PMID: 23974079 DOI: 10.1093/gerona/glt124] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Age-related pseudocapillarization of the liver sinusoidal endothelium is associated with impaired lipid and drug metabolism and the development of disease. 2,5-Dimethoxy-4-iodoamphetamine is a serotonin receptor 2 agonist that has been shown to have beneficial effects on the liver sinusoidal endothelium in the setting of partial hepatectomy. Here, we have assessed whether 2,5-dimethoxy-4-iodoamphetamine influences ultrastructure of the sinusoidal endothelium in normal 7- and 24-month-old C57Bl6 mice. Following 48 hours of 2,5-dimethoxy-4-iodoamphetamine administration, we found that the liver endothelium in the young, but not in the old, mice had increased porosity compared with controls. This effect appeared to be modulated by increased fenestration size rather than a change in fenestration number. 2,5-Dimethoxy-4-iodoamphetamine is a useful manipulator of fenestration size in the young liver and could be harnessed in the search for therapeutic interventions for pseudocapillarization.
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Affiliation(s)
- Victoria C Cogger
- ANZAC Research Institute, Gate 3 Hospital Road Concord RG Hospital, Concord, NSW 2139, Australia.
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