1
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Hunt NJ, Lockwood GP, Heffernan SJ, Daymond J, Ngu M, Narayanan RK, Westwood LJ, Mohanty B, Esser L, Williams CC, Kuncic Z, McCourt PAG, Le Couteur DG, Cogger VC. Oral nanotherapeutic formulation of insulin with reduced episodes of hypoglycaemia. NATURE NANOTECHNOLOGY 2024; 19:534-544. [PMID: 38168926 PMCID: PMC11026164 DOI: 10.1038/s41565-023-01565-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 11/02/2023] [Indexed: 01/05/2024]
Abstract
Injectable insulin is an extensively used medication with potential life-threatening hypoglycaemic events. Here we report on insulin-conjugated silver sulfide quantum dots coated with a chitosan/glucose polymer to produce a responsive oral insulin nanoformulation. This formulation is pH responsive, is insoluble in acidic environments and shows increased absorption in human duodenum explants and Caenorhabditis elegans at neutral pH. The formulation is sensitive to glucosidase enzymes to trigger insulin release. It is found that the formulation distributes to the liver in mice and rats after oral administration and promotes a dose-dependent reduction in blood glucose without promoting hypoglycaemia or weight gain in diabetic rodents. Non-diabetic baboons also show a dose-dependent reduction in blood glucose. No biochemical or haematological toxicity or adverse events were observed in mice, rats and non-human primates. The formulation demonstrates the potential to orally control blood glucose without hypoglycaemic episodes.
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Affiliation(s)
- Nicholas J Hunt
- Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia.
- Sydney Nano Institute, The University of Sydney, Camperdown, New South Wales, Australia.
- Charles Perkins Centre, The University of Sydney, Camperdown, New South Wales, Australia.
- ANZAC Research Institute, Concord Repatriation General Hospital, Sydney Local Health District (SLHD), Concord, New South Wales, Australia.
| | - Glen P Lockwood
- Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia
- ANZAC Research Institute, Concord Repatriation General Hospital, Sydney Local Health District (SLHD), Concord, New South Wales, Australia
| | - Scott J Heffernan
- Royal Prince Alfred Hospital, SLHD, Camperdown, New South Wales, Australia
| | - Jarryd Daymond
- Sydney Nano Institute, The University of Sydney, Camperdown, New South Wales, Australia
- Sydney Business School, The University of Sydney, Camperdown, New South Wales, Australia
| | - Meng Ngu
- ANZAC Research Institute, Concord Repatriation General Hospital, Sydney Local Health District (SLHD), Concord, New South Wales, Australia
- Department of Gastroenterology, Concord Repatriation General Hospital, SLHD, Concord, New South Wales, Australia
| | - Ramesh K Narayanan
- Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia
- ANZAC Research Institute, Concord Repatriation General Hospital, Sydney Local Health District (SLHD), Concord, New South Wales, Australia
| | - Lara J Westwood
- Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia
- Sydney Nano Institute, The University of Sydney, Camperdown, New South Wales, Australia
- ANZAC Research Institute, Concord Repatriation General Hospital, Sydney Local Health District (SLHD), Concord, New South Wales, Australia
| | - Biswaranjan Mohanty
- Sydney Analytical Core Research Facility, The University of Sydney, Camperdown, New South Wales, Australia
| | - Lars Esser
- CSIRO Manufacturing, Clayton, Victoria, Australia
| | | | - Zdenka Kuncic
- Sydney Nano Institute, The University of Sydney, Camperdown, New South Wales, Australia
- School of Physics, The University of Sydney, Camperdown, New South Wales, Australia
| | - Peter A G McCourt
- Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia
- ANZAC Research Institute, Concord Repatriation General Hospital, Sydney Local Health District (SLHD), Concord, New South Wales, Australia
- Department of Medical Biology, University of Tromsø-The Arctic University of Norway, Tromsø, Norway
| | - David G Le Couteur
- Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia
- Charles Perkins Centre, The University of Sydney, Camperdown, New South Wales, Australia
- ANZAC Research Institute, Concord Repatriation General Hospital, Sydney Local Health District (SLHD), Concord, New South Wales, Australia
| | - Victoria C Cogger
- Faculty of Medicine and Health, The University of Sydney, Camperdown, New South Wales, Australia.
- ANZAC Research Institute, Concord Repatriation General Hospital, Sydney Local Health District (SLHD), Concord, New South Wales, Australia.
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2
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Hunt NJ, Wahl D, Westwood LJ, Lockwood GP, Le Couteur DG, Cogger VC. Targeting the liver in dementia and cognitive impairment: Dietary macronutrients and diabetic therapeutics. Adv Drug Deliv Rev 2022; 190:114537. [PMID: 36115494 PMCID: PMC10125004 DOI: 10.1016/j.addr.2022.114537] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 09/04/2022] [Accepted: 09/07/2022] [Indexed: 01/24/2023]
Abstract
Many people living with dementia and cognitive impairment have dysfunctional mitochondrial and insulin-glucose metabolism resembling type 2 diabetes mellitus and old age. Evidence from human trials shows that nutritional interventions and anti-diabetic medicines that target nutrient-sensing pathways overcome these deficits in glucose and energy metabolism and can improve cognition and/or reduce symptoms of dementia. The liver is the main organ that mediates the systemic effects of diets and many diabetic medicines; therefore, it is an intermediate target for such dementia interventions. A challenge is the efficacy of these treatments in older age. Solutions include the targeted hepatic delivery of diabetic medicines using nanotechnologies and titration of macronutrients to optimize hepatic energy metabolism.
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Affiliation(s)
- Nicholas J Hunt
- Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2008, Australia; Charles Perkins Centre, The University of Sydney, Sydney, NSW 2008, Australia; Sydney Nano Institute, The University of Sydney, Sydney, NSW 2008, Australia; ANZAC Research Institute & Centre for Education and Research on Ageing, Concord Repatriation General Hospital, Concord, NSW 2139, Australia
| | - Devin Wahl
- Department of Health and Exercise Science & Centre for Healthy Aging, Colorado State University, CO 80523, United States
| | - Lara J Westwood
- Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2008, Australia; ANZAC Research Institute & Centre for Education and Research on Ageing, Concord Repatriation General Hospital, Concord, NSW 2139, Australia
| | - Glen P Lockwood
- Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2008, Australia; ANZAC Research Institute & Centre for Education and Research on Ageing, Concord Repatriation General Hospital, Concord, NSW 2139, Australia
| | - David G Le Couteur
- Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2008, Australia; Charles Perkins Centre, The University of Sydney, Sydney, NSW 2008, Australia; ANZAC Research Institute & Centre for Education and Research on Ageing, Concord Repatriation General Hospital, Concord, NSW 2139, Australia
| | - Victoria C Cogger
- Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2008, Australia; ANZAC Research Institute & Centre for Education and Research on Ageing, Concord Repatriation General Hospital, Concord, NSW 2139, Australia.
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3
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Zhang LF, Wang XH, Zhang CL, Lee J, Duan BW, Xing L, Li L, Oh YK, Jiang HL. Sequential Nano-Penetrators of Capillarized Liver Sinusoids and Extracellular Matrix Barriers for Liver Fibrosis Therapy. ACS NANO 2022; 16:14029-14042. [PMID: 36036898 DOI: 10.1021/acsnano.2c03858] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
During liver fibrogenesis, liver sinusoidal capillarization and extracellular matrix (ECM) deposition construct dual pathological barriers to drug delivery. Upon capillarization, the vanished fenestrae in liver sinusoidal endothelial cells (LSECs) significantly hinder substance exchange between blood and liver cells, while excessive ECM further hinders the delivery of nanocarriers to activated hepatic stellate cells (HSCs). Herein, an efficient nanodrug delivery system was constructed to sequentially break through the capillarized LSEC barrier and the deposited ECM barrier. For the first barrier, LSEC-targeting and fenestrae-repairing nanoparticles (named HA-NPs/SMV) were designed on the basis of the modification with hyaluronic acid and the loading of simvastatin (SMV). For the second barrier, collagenase I and vitamin A codecorated nanoparticles with collagen-ablating and HSC-targeting functions (named CV-NPs/siCol1α1) were prepared to deliver siCol1α1 with the goal of inhibiting collagen generation and HSC activation. Our in vivo results showed that upon encountering the capillarized LSEC barrier, HA-NPs/SMV rapidly released SMV and exerted a fenestrae-repairing function, which allowed more CV-NPs/siCol1α1 to enter the space of Disse to degrade deposited collagen and finally to achieve higher accumulation in activated HSCs. Scanning electronic microscopy images showed the recovery of liver sinusoids, and analysis of liver tissue sections demonstrated that HA-NPs/SMV and CV-NPs/siCol1α1 had a synergetic effect. Our pathological barrier-normalization strategy provides an antifibrotic therapeutic regimen.
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Affiliation(s)
- Ling-Feng Zhang
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, China
| | - Xing-Huan Wang
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, China
| | - Cheng-Lu Zhang
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, China
| | - Jaiwoo Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Korea
| | - Bo-Wen Duan
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, China
| | - Lei Xing
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, China
| | - Ling Li
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu 210009, China
| | - Yu-Kyoung Oh
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul 08826, Korea
| | - Hu-Lin Jiang
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, China
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4
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Nasiri-Ansari N, Androutsakos T, Flessa CM, Kyrou I, Siasos G, Randeva HS, Kassi E, Papavassiliou AG. Endothelial Cell Dysfunction and Nonalcoholic Fatty Liver Disease (NAFLD): A Concise Review. Cells 2022; 11:cells11162511. [PMID: 36010588 PMCID: PMC9407007 DOI: 10.3390/cells11162511] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/07/2022] [Accepted: 08/10/2022] [Indexed: 12/12/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is one of the most common liver diseases worldwide. It is strongly associated with obesity, type 2 diabetes (T2DM), and other metabolic syndrome features. Reflecting the underlying pathogenesis and the cardiometabolic disorders associated with NAFLD, the term metabolic (dysfunction)-associated fatty liver disease (MAFLD) has recently been proposed. Indeed, over the past few years, growing evidence supports a strong correlation between NAFLD and increased cardiovascular disease (CVD) risk, independent of the presence of diabetes, hypertension, and obesity. This implies that NAFLD may also be directly involved in the pathogenesis of CVD. Notably, liver sinusoidal endothelial cell (LSEC) dysfunction appears to be implicated in the progression of NAFLD via numerous mechanisms, including the regulation of the inflammatory process, hepatic stellate activation, augmented vascular resistance, and the distortion of microcirculation, resulting in the progression of NAFLD. Vice versa, the liver secretes inflammatory molecules that are considered pro-atherogenic and may contribute to vascular endothelial dysfunction, resulting in atherosclerosis and CVD. In this review, we provide current evidence supporting the role of endothelial cell dysfunction in the pathogenesis of NAFLD and NAFLD-associated atherosclerosis. Endothelial cells could thus represent a "golden target" for the development of new treatment strategies for NAFLD and its comorbid CVD.
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Affiliation(s)
- Narjes Nasiri-Ansari
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Theodoros Androutsakos
- Department of Pathophysiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Christina-Maria Flessa
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Warwickshire Institute for the Study of Diabetes, Endocrinology and Metabolism (WISDEM), University Hospitals Coventry and Warwickshire NHS Trust, Coventry CV2 2DX, UK
| | - Ioannis Kyrou
- Warwickshire Institute for the Study of Diabetes, Endocrinology and Metabolism (WISDEM), University Hospitals Coventry and Warwickshire NHS Trust, Coventry CV2 2DX, UK
- Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
- Laboratory of Dietetics and Quality of Life, Department of Food Science and Human Nutrition, School of Food and Nutritional Sciences, Agricultural University of Athens, 11855 Athens, Greece
| | - Gerasimos Siasos
- Third Department of Cardiology, ‘Sotiria’ Thoracic Diseases General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Harpal S. Randeva
- Warwickshire Institute for the Study of Diabetes, Endocrinology and Metabolism (WISDEM), University Hospitals Coventry and Warwickshire NHS Trust, Coventry CV2 2DX, UK
- Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
| | - Eva Kassi
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Endocrine Unit, 1st Department of Propaedeutic Internal Medicine, ‘Laiko’ General Hospital, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Correspondence: (E.K.); (A.G.P.)
| | - Athanasios G. Papavassiliou
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Correspondence: (E.K.); (A.G.P.)
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5
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Kassab A, Rizk N, Prakash S. The Role of Systemic Filtrating Organs in Aging and Their Potential in Rejuvenation Strategies. Int J Mol Sci 2022; 23:ijms23084338. [PMID: 35457154 PMCID: PMC9025381 DOI: 10.3390/ijms23084338] [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: 01/28/2022] [Revised: 04/05/2022] [Accepted: 04/08/2022] [Indexed: 11/26/2022] Open
Abstract
Advances in aging studies brought about by heterochronic parabiosis suggest that aging might be a reversable process that is affected by changes in the systemic milieu of organs and cells. Given the broadness of such a systemic approach, research to date has mainly questioned the involvement of “shared organs” versus “circulating factors”. However, in the absence of a clear understanding of the chronological development of aging and a unified platform to evaluate the successes claimed by specific rejuvenation methods, current literature on this topic remains scattered. Herein, aging is assessed from an engineering standpoint to isolate possible aging potentiators via a juxtaposition between biological and mechanical systems. Such a simplification provides a general framework for future research in the field and examines the involvement of various factors in aging. Based on this simplified overview, the kidney as a filtration organ is clearly implicated, for the first time, with the aging phenomenon, necessitating a re-evaluation of current rejuvenation studies to untangle the extent of its involvement and its possible role as a potentiator in aging. Based on these findings, the review concludes with potential translatable and long-term therapeutics for aging while offering a critical view of rejuvenation methods proposed to date.
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Affiliation(s)
- Amal Kassab
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University, 3775 University Street, Montreal, QC H3A 2BA, Canada
| | - Nasser Rizk
- Department of Biomedical Sciences, College of Health Sciences-QU-Health, Qatar University, Doha 2713, Qatar
| | - Satya Prakash
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University, 3775 University Street, Montreal, QC H3A 2BA, Canada
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6
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Zhao Y, Yang Y, Li Q, Li J. Understanding the Unique Microenvironment in the Aging Liver. Front Med (Lausanne) 2022; 9:842024. [PMID: 35280864 PMCID: PMC8907916 DOI: 10.3389/fmed.2022.842024] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 01/31/2022] [Indexed: 12/21/2022] Open
Abstract
In the past decades, many studies have focused on aging because of our pursuit of longevity. With lifespans extended, the regenerative capacity of the liver gradually declines due to the existence of aging. This is partially due to the unique microenvironment in the aged liver, which affects a series of physiological processes. In this review, we summarize the related researches in the last decade and try to highlight the aging-related alterations in the aged liver.
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Affiliation(s)
- Yalei Zhao
- Department of Infectious Diseases, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ya Yang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, College of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Qian Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, College of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - Jianzhou Li
- Department of Infectious Diseases, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
- *Correspondence: Jianzhou Li
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7
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Hunt NJ, McCourt PAG, Kuncic Z, Le Couteur DG, Cogger VC. Opportunities and Challenges for Nanotherapeutics for the Aging Population. FRONTIERS IN NANOTECHNOLOGY 2022. [DOI: 10.3389/fnano.2022.832524] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Nanotherapeutics utilize the properties of nanomaterials to alter the pharmacology of the drugs and therapies being transported, leading to changes in their biological disposition (absorption, distribution, cellular uptake, metabolism and elimination) and ultimately, their pharmacological effect. This provides an opportunity to optimize the pharmacology of drugs, particularly for those that are dependent on hepatic action. Old age is associated with changes in many pharmacokinetic processes which tend to impair drug efficacy and increase risk of toxicity. While these age-related changes are drug-specific they could be directly addressed using nanotechnology and precision targeting. The benefits of nanotherapeutics needs to be balanced against toxicity, with future use in humans dependent upon the gathering of information about the clearance and long-term safety of nanomaterials.
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Kawashita E, Ozaki T, Ishihara K, Kashiwada C, Akiba S. Endothelial group IVA phospholipase A2 promotes hepatic fibrosis with sinusoidal capillarization in the early stage of a non-alcoholic steatohepatitis in mice. Life Sci 2022; 294:120355. [DOI: 10.1016/j.lfs.2022.120355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/12/2022] [Accepted: 01/19/2022] [Indexed: 10/19/2022]
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9
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Wan Y, Li X, Slevin E, Harrison K, Li T, Zhang Y, Klaunig JE, Wu C, Shetty AK, Dong XC, Meng F. Endothelial dysfunction in pathological processes of chronic liver disease during aging. FASEB J 2021; 36:e22125. [PMID: 34958687 PMCID: PMC8782255 DOI: 10.1096/fj.202101426r] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 12/03/2021] [Accepted: 12/13/2021] [Indexed: 12/19/2022]
Abstract
Aging is associated with gradual changes in liver structure and physiological/pathological functions in hepatic cells including hepatocytes, cholangiocytes, Kupffer cells, hepatic stellate cells (HSCs), and liver sinusoidal endothelial cells (LSECs). LSECs are specialized hepatic endothelial cells that regulate liver homeostasis. These cells actively impact the hepatic microenvironment as they have fenestrations and a thin morphology to allow substance exchange between circulating blood and the liver tissue. As aging occurs, LSECs have a reduction in both the number and size of fenestrations, which is referred to as pseudocapillarization. This along with the aging of the liver leads to increased oxidative stress, decreased availability of nitric oxide, decreased hepatic blood flow, and increased inflammatory cytokines in LSECs. Vascular aging can also lead to hepatic hypoxia, HSC activation, and liver fibrosis. In this review, we described the basic structure of LSECs, and the effect of LSECs on hepatic inflammation and fibrosis during aging process. We briefly summarized the changes of hepatic microcirculation during liver inflammation, the effect of aging on the clearance function of LSECs, the interactions between LSECs and immunity, hepatocytes or other hepatic nonparenchymal cells, and the therapeutic intervention of liver diseases by targeting LSECs and vascular system. Since LSECs play an important role in the development of liver fibrosis and the changes of LSEC phenotype occur in the early stage of liver fibrosis, the study of LSECs in the fibrotic liver is valuable for the detection of early liver fibrosis and the early intervention of fibrotic response.
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Affiliation(s)
- Ying Wan
- Department of Pathophysiology, School of Basic Medical Science, Southwest Medical University, Luzhou, China, China
| | - Xuedong Li
- Department of Pathophysiology, School of Basic Medical Science, Southwest Medical University, Luzhou, China, China
| | - Elise Slevin
- Indiana Center for Liver Research, Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Kelly Harrison
- Department of Transplant Surgery, Baylor Scott & White Memorial Hospital, Temple, Texas, USA
| | - Tian Li
- Department of Pathophysiology, School of Basic Medical Science, Southwest Medical University, Luzhou, China, China
| | - Yudian Zhang
- Department of Pathophysiology, School of Basic Medical Science, Southwest Medical University, Luzhou, China, China
| | - James E Klaunig
- Laboratory of Investigative Toxicology and Pathology, Department of Environmental and Occupational Health, Indiana School of Public Health, Indiana University, Bloomington, Indiana, USA
| | - Chaodong Wu
- Department of Nutrition and Food Science, Texas A&M University, College Station, Texas, USA
| | - Ashok K Shetty
- Department of Molecular and Cellular Medicine, Institute for Regenerative Medicine, Texas A&M College of Medicine, College Station, Texas, USA
| | - X Charlie Dong
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Fanyin Meng
- Indiana Center for Liver Research, Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA.,Richard L. Roudebush VA Medical Center, Indianapolis, Indiana, USA
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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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11
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Bhandari S, Larsen AK, McCourt P, Smedsrød B, Sørensen KK. The Scavenger Function of Liver Sinusoidal Endothelial Cells in Health and Disease. Front Physiol 2021; 12:757469. [PMID: 34707514 PMCID: PMC8542980 DOI: 10.3389/fphys.2021.757469] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 09/14/2021] [Indexed: 12/12/2022] Open
Abstract
The aim of this review is to give an outline of the blood clearance function of the liver sinusoidal endothelial cells (LSECs) in health and disease. Lining the hundreds of millions of hepatic sinusoids in the human liver the LSECs are perfectly located to survey the constituents of the blood. These cells are equipped with high-affinity receptors and an intracellular vesicle transport apparatus, enabling a remarkably efficient machinery for removal of large molecules and nanoparticles from the blood, thus contributing importantly to maintain blood and tissue homeostasis. We describe here central aspects of LSEC signature receptors that enable the cells to recognize and internalize blood-borne waste macromolecules at great speed and high capacity. Notably, this blood clearance system is a silent process, in the sense that it usually neither requires or elicits cell activation or immune responses. Most of our knowledge about LSECs arises from studies in animals, of which mouse and rat make up the great majority, and some species differences relevant for extrapolating from animal models to human are discussed. In the last part of the review, we discuss comparative aspects of the LSEC scavenger functions and specialized scavenger endothelial cells (SECs) in other vascular beds and in different vertebrate classes. In conclusion, the activity of LSECs and other SECs prevent exposure of a great number of waste products to the immune system, and molecules with noxious biological activities are effectively “silenced” by the rapid clearance in LSECs. An undesired consequence of this avid scavenging system is unwanted uptake of nanomedicines and biologics in the cells. As the development of this new generation of therapeutics evolves, there will be a sharp increase in the need to understand the clearance function of LSECs in health and disease. There is still a significant knowledge gap in how the LSEC clearance function is affected in liver disease.
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Affiliation(s)
- Sabin Bhandari
- Vascular Biology Research Group, Department of Medical Biology, University of Tromsø (UiT) - The Arctic University of Norway, Tromsø, Norway
| | - Anett Kristin Larsen
- Vascular Biology Research Group, Department of Medical Biology, University of Tromsø (UiT) - The Arctic University of Norway, Tromsø, Norway
| | - Peter McCourt
- Vascular Biology Research Group, Department of Medical Biology, University of Tromsø (UiT) - The Arctic University of Norway, Tromsø, Norway
| | - Bård Smedsrød
- Vascular Biology Research Group, Department of Medical Biology, University of Tromsø (UiT) - The Arctic University of Norway, Tromsø, Norway
| | - Karen Kristine Sørensen
- Vascular Biology Research Group, Department of Medical Biology, University of Tromsø (UiT) - The Arctic University of Norway, Tromsø, Norway
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12
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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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13
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Szafranska K, Holte CF, Kruse LD, Mao H, Øie CI, Szymonski M, Zapotoczny B, McCourt PAG. Quantitative analysis methods for studying fenestrations in liver sinusoidal endothelial cells. A comparative study. Micron 2021; 150:103121. [PMID: 34560521 DOI: 10.1016/j.micron.2021.103121] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 07/01/2021] [Accepted: 07/14/2021] [Indexed: 12/26/2022]
Abstract
Liver Sinusoidal Endothelial Cells (LSEC) line the hepatic vasculature providing blood filtration via transmembrane nanopores called fenestrations. These structures are 50-300 nm in diameter, which is below the resolution limit of a conventional light microscopy. To date, there is no standardized method of fenestration image analysis. With this study, we provide and compare three different approaches: manual measurements, a semi-automatic (threshold-based) method, and an automatic method based on user-friendly open source machine learning software. Images were obtained using three super resolution techniques - atomic force microscopy (AFM), scanning electron microscopy (SEM), and structured illumination microscopy (SIM). Parameters describing fenestrations such as diameter, area, roundness, frequency, and porosity were measured. Finally, we studied the user bias by comparison of the data obtained by five different users applying provided analysis methods.
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Affiliation(s)
- K Szafranska
- Department of Medical Biology, Vascular Biology Research Group, University of Tromsø (UiT), The Arctic University of Norway, Norway; Centre for Nanometer-Scale Science and Advanced Materials, NANOSAM, Faculty of Physics, Astronomy, and Applied Computer Science, Jagiellonian University, Krakow, Poland.
| | - C F Holte
- Department of Medical Biology, Vascular Biology Research Group, University of Tromsø (UiT), The Arctic University of Norway, Norway
| | - L D Kruse
- Department of Medical Biology, Vascular Biology Research Group, University of Tromsø (UiT), The Arctic University of Norway, Norway
| | - H Mao
- Department of Medical Biology, Vascular Biology Research Group, University of Tromsø (UiT), The Arctic University of Norway, Norway
| | - C I Øie
- Department of Medical Biology, Vascular Biology Research Group, University of Tromsø (UiT), The Arctic University of Norway, Norway
| | - M Szymonski
- Centre for Nanometer-Scale Science and Advanced Materials, NANOSAM, Faculty of Physics, Astronomy, and Applied Computer Science, Jagiellonian University, Krakow, Poland
| | - B Zapotoczny
- Department of Medical Biology, Vascular Biology Research Group, University of Tromsø (UiT), The Arctic University of Norway, Norway; Institute of Nuclear Physics, Polish Academy of Sciences, 31-342, Krakow, Poland
| | - P A G McCourt
- Department of Medical Biology, Vascular Biology Research Group, University of Tromsø (UiT), The Arctic University of Norway, Norway
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14
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Hunt NJ, Lockwood GP, Kang SWS, Westwood LJ, Limantoro C, Chrzanowski W, McCourt PAG, Kuncic Z, Le Couteur DG, Cogger VC. Quantum Dot Nanomedicine Formulations Dramatically Improve Pharmacological Properties and Alter Uptake Pathways of Metformin and Nicotinamide Mononucleotide in Aging Mice. ACS NANO 2021; 15:4710-4727. [PMID: 33626869 DOI: 10.1021/acsnano.0c09278] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Orally administered Ag2S quantum dots (QDs) rapidly cross the small intestine and are taken up by the liver. Metformin and nicotinamide mononucleotide (NMN) target metabolic and aging processes within the liver. This study examined the pharmacology and toxicology of QD-based nanomedicines as carriers of metformin and NMN in young and old mice, determining if their therapeutic potency and reduced effects associated with aging could be improved. Pharmacokinetic studies demonstrated that QD-conjugated metformin and NMN have greater bioavailability, with selective accumulation in the liver following oral administration compared to unconjugated formulations. Pharmacodynamic data showed that the QD-conjugated medicines had increased physiological, metabolic, and cellular potency compared to unconjugated formulations (25× metformin; 100× NMN) and highlighted a shift in the peak induction of, and greater metabolic response to, glucose tolerance testing. Two weeks of treatment with low-dose QD-NMN (0.8 mg/kg/day) improved glucose tolerance tests in young (3 months) mice, whereas old (18 and 24 months) mice demonstrated improved fasting and fed insulin levels and insulin resistance. High-dose unconjugated NMN (80 mg/kg/day) demonstrated improvements in young mice but not in old mice. After 100 days of QD (320 μg/kg/day) treatment, there was no evidence of cellular necrosis, fibrosis, inflammation, or accumulation. Ag2S QD nanomedicines improved the pharmacokinetic and pharmacodynamic properties of metformin and NMN by increasing their therapeutic potency, bypassing classical cellular uptake pathways, and demonstrated efficacy when drug alone was ineffective in aging mice.
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Affiliation(s)
- Nicholas J Hunt
- Ageing and Alzheimers Institute, Centre for Education & Research on Ageing, Concord Repatriation General Hospital, ANZAC Research Institute, Concord, NSW 2139, Australia
- Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
- Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia
- Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
| | - Glen P Lockwood
- Ageing and Alzheimers Institute, Centre for Education & Research on Ageing, Concord Repatriation General Hospital, ANZAC Research Institute, Concord, NSW 2139, Australia
- Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
| | - Sun W S Kang
- Ageing and Alzheimers Institute, Centre for Education & Research on Ageing, Concord Repatriation General Hospital, ANZAC Research Institute, Concord, NSW 2139, Australia
- Cell Biology and Imaging Section, Thoracic and Gastrointestinal Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Lara J Westwood
- Faculty of Science, University of Technology Sydney, Sydney, NSW 2000, Australia
| | - Christina Limantoro
- Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
| | - Wojciech Chrzanowski
- Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
| | - Peter A G McCourt
- Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia
- Department of Medical Biology, University of Tromsø - The Arctic University of Norway, Tromsø 9037, Norway
| | - Zdenka Kuncic
- Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia
- Sydney Nano Institute, The University of Sydney, Sydney, NSW 2006, Australia
- School of Physics, The University of Sydney, Sydney, NSW 2006, Australia
| | - David G Le Couteur
- Ageing and Alzheimers Institute, Centre for Education & Research on Ageing, Concord Repatriation General Hospital, ANZAC Research Institute, Concord, NSW 2139, Australia
- Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
- Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia
| | - Victoria C Cogger
- Ageing and Alzheimers Institute, Centre for Education & Research on Ageing, Concord Repatriation General Hospital, ANZAC Research Institute, Concord, NSW 2139, Australia
- Faculty of Medicine and Health, The University of Sydney, Sydney, NSW 2006, Australia
- Charles Perkins Centre, The University of Sydney, Sydney, NSW 2006, Australia
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15
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Hunt NJ, Lockwood GP, Kang SWS, Pulpitel T, Clark X, Mao H, McCourt PAG, Cooney GJ, Wali JA, Le Couteur FH, Le Couteur DG, Cogger VC. The Effects of Metformin on Age-Related Changes in the Liver Sinusoidal Endothelial Cell. J Gerontol A Biol Sci Med Sci 2020; 75:278-285. [PMID: 31198956 DOI: 10.1093/gerona/glz153] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Indexed: 12/17/2022] Open
Abstract
Age-related changes in the liver sinusoidal endothelium, particularly the reduction in fenestrations, contribute to insulin resistance in old age. Metformin impacts on the aging process and improves insulin resistance. Therefore, the effects of metformin on the liver sinusoidal endothelium were studied. Metformin increased fenestrations in liver sinusoidal endothelial cells isolated from both young and old mice. Mice administered metformin in the diet for 12 months had increased fenestrations and this was associated with lower insulin levels. The effect of metformin on fenestrations was blocked by inhibitors of AMP-activated protein kinase (AMPK), endothelial nitric oxide synthase, and myosin light chain kinase phosphorylation. Metformin led to increased transgelin expression and structural changes in the actin cytoskeleton but had no effect on lactate production. Metformin also generated fenestration-like structures in SK-Hep1 cells, a liver endothelial cell line, and this was associated with increased ATP, cGMP, and mitochondrial activity. In conclusion, metformin ameliorates age-related changes in the liver sinusoidal endothelial cell via AMPK and endothelial nitric oxide pathways, which might promote insulin sensitivity in the liver, particularly in old age.
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Affiliation(s)
- Nicholas J Hunt
- ANZAC Research Institute, Biogerontology Laboratory, Concord Repatriation General Hospital, New South Wales, Australia.,Aging and Alzheimer's Institute and Centre for Education and Research on Ageing, Concord Repatriation General Hospital, New South Wales, Australia.,Concord Clinical School, Sydney Medical School, New South Wales, Australia.,Charles Perkins Centre, Nutritional Ecology and Physiology Laboratory, The University of Sydney, New South Wales, Australia
| | - Glen P Lockwood
- ANZAC Research Institute, Biogerontology Laboratory, Concord Repatriation General Hospital, New South Wales, Australia.,Aging and Alzheimer's Institute and Centre for Education and Research on Ageing, Concord Repatriation General Hospital, New South Wales, Australia.,Charles Perkins Centre, Nutritional Ecology and Physiology Laboratory, The University of Sydney, New South Wales, Australia
| | - Sun Woo Sophie Kang
- ANZAC Research Institute, Biogerontology Laboratory, Concord Repatriation General Hospital, New South Wales, Australia.,Aging and Alzheimer's Institute and Centre for Education and Research on Ageing, Concord Repatriation General Hospital, New South Wales, Australia.,Charles Perkins Centre, Nutritional Ecology and Physiology Laboratory, The University of Sydney, New South Wales, Australia
| | - Tamara Pulpitel
- Charles Perkins Centre, Nutritional Ecology and Physiology Laboratory, The University of Sydney, New South Wales, Australia
| | - Ximonie Clark
- Charles Perkins Centre, Nutritional Ecology and Physiology Laboratory, The University of Sydney, New South Wales, Australia
| | - Hong Mao
- Department of Medical Biology, University of Tromsø - The Arctic University of Norway
| | - Peter A G McCourt
- Charles Perkins Centre, Nutritional Ecology and Physiology Laboratory, The University of Sydney, New South Wales, Australia.,Department of Medical Biology, University of Tromsø - The Arctic University of Norway
| | - Gregory J Cooney
- Charles Perkins Centre, Nutritional Ecology and Physiology Laboratory, The University of Sydney, New South Wales, Australia
| | - Jibran A Wali
- Aging and Alzheimer's Institute and Centre for Education and Research on Ageing, Concord Repatriation General Hospital, New South Wales, Australia.,Charles Perkins Centre, Nutritional Ecology and Physiology Laboratory, The University of Sydney, New South Wales, Australia.,Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, New South Wales, Australia
| | - Frank H Le Couteur
- ANZAC Research Institute, Biogerontology Laboratory, Concord Repatriation General Hospital, New South Wales, Australia
| | - David G Le Couteur
- ANZAC Research Institute, Biogerontology Laboratory, Concord Repatriation General Hospital, New South Wales, Australia.,Aging and Alzheimer's Institute and Centre for Education and Research on Ageing, Concord Repatriation General Hospital, New South Wales, Australia.,Concord Clinical School, Sydney Medical School, New South Wales, Australia.,Charles Perkins Centre, Nutritional Ecology and Physiology Laboratory, The University of Sydney, New South Wales, Australia
| | - Victoria C Cogger
- ANZAC Research Institute, Biogerontology Laboratory, Concord Repatriation General Hospital, New South Wales, Australia.,Aging and Alzheimer's Institute and Centre for Education and Research on Ageing, Concord Repatriation General Hospital, New South Wales, Australia.,Concord Clinical School, Sydney Medical School, New South Wales, Australia.,Charles Perkins Centre, Nutritional Ecology and Physiology Laboratory, The University of Sydney, New South Wales, Australia
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16
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Tao H, Guo J, Ma Y, Zhao Y, Jin T, Gu L, Dou Y, Liu J, Hu H, Xiong X, Zhang J. Luminescence Imaging of Acute Liver Injury by Biodegradable and Biocompatible Nanoprobes. ACS NANO 2020; 14:11083-11099. [PMID: 32790342 DOI: 10.1021/acsnano.0c00539] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Liver injury can result in different hepatic diseases such as fatty liver, liver fibrosis, hepatitis, and liver failure, which are mainly responsible for global mortality and morbidity. Early diagnosis is critical for the treatment of liver diseases. Herein we report luminescence imaging of neutrophil-mediated acute liver injury, including alcoholic liver injury (ALI) and acute liver failure (ALF). To this purpose, a biodegradable luminescent material was developed by chemical functionalization of a cyclic oligosaccharide, which can be produced into nanoprobes (defined as LaCD NPs). Luminescence of LaCD NPs was dependent on the level of reactive oxygen species and myeloperoxidase (MPO). Correspondingly, activated neutrophils could be specifically imaged by LaCD NPs, and the luminescent signal was positively associated with the neutrophil count. In mouse models of ALI and ALF, LaCD NPs enabled precise quantification and tracking of neutrophils in livers. In both cases, changes in the luminescence intensity are consistent with time-dependent profiles of neutrophils, MPO, and other parameters relevant to the pathogenesis of liver injury. Moreover, the luminescence imaging capacity of LaCD NPs can be additionally improved by surface functionalization with a neutrophil-targeting peptide. In addition, preliminary in vitro and in vivo studies demonstrated good safety of LaCD NPs. Consequently, LaCD NPs can be further developed as an effective and biocompatible luminescent nanoprobe for in vivo dynamic detection of the development of neutrophil-mediated acute liver injury. It is also promising for diagnosis of other neutrophil-associated liver diseases.
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Affiliation(s)
- Hui Tao
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan 430006, China
| | - Jiawei Guo
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Yongchang Ma
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Yang Zhao
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Taotao Jin
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Lijuan Gu
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan 430006, China
| | - Yin Dou
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Jinyi Liu
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Houyuan Hu
- Department of Cardiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Xiaoxing Xiong
- Central Laboratory, Renmin Hospital of Wuhan University, Wuhan 430006, China
| | - Jianxiang Zhang
- Department of Pharmaceutics, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China
- State Key Laboratory of Trauma, Burn and Combined Injury, Institute of Combined Injury, Third Military Medical University (Army Medical University), Chongqing 400038, China
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17
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Luo J, Gong T, Ma L. Chondroitin-modified lipid nanoparticles target the Golgi to degrade extracellular matrix for liver cancer management. Carbohydr Polym 2020; 249:116887. [PMID: 32933700 DOI: 10.1016/j.carbpol.2020.116887] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 08/01/2020] [Accepted: 08/01/2020] [Indexed: 12/15/2022]
Abstract
Liver cancer is a serious liver disease in which hepatoma cells and activated hepatic stellate cells (HSCs) overproduce extracellular matrix (ECM), which involves the Golgi apparatus. Here chondroitin-modified lipid nanoparticles (CSNs) were prepared and loaded with doxorubicin (DOX) and retinoic acid (RA) using a thin-film hydration-high pressure homogenization method. The resulting DOX + RA-CSNs were efficiently taken up by SMMC-7721 hepatoma cells and HSCs in culture, where they accumulated in the Golgi apparatus and destroyed it, inhibiting ECM production. Injecting DOX + RA-CSNs into mice with primary liver cancer or H22 allografts led to significantly higher tumor penetration by DOX and RA, greater antitumor efficacy, and lower DOX-related toxicity than injecting a solution of the two drugs. Immunofluorescence and immunohistochemistry of liver tissues showed that DOX + RA-CSNs dramatically reduced expression of the ECM components. These results suggest that CSNs show potential for targeting drugs to the Golgi apparatus of liver cancer cells and potentially other types of tumors.
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Affiliation(s)
- Jingwen Luo
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Key Laboratory of Industrial Biotechnology and Hubei Collaborative Innovation Center for Green Transformation of Bio-resources, School of Life Sciences, Hubei University, Wuhan, 430062, China
| | - Tao Gong
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drugs and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
| | - Lixin Ma
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Key Laboratory of Industrial Biotechnology and Hubei Collaborative Innovation Center for Green Transformation of Bio-resources, School of Life Sciences, Hubei University, Wuhan, 430062, China.
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18
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Ortega‐Ribera M, Hunt NJ, Gracia‐Sancho J, Cogger VC. The Hepatic Sinusoid in Aging and Disease: Update and Advances From the 20th Liver Sinusoid Meeting. Hepatol Commun 2020; 4:1087-1098. [PMID: 32626839 PMCID: PMC7327202 DOI: 10.1002/hep4.1517] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 03/17/2020] [Accepted: 03/18/2020] [Indexed: 12/13/2022] Open
Abstract
This is a meeting report of the 2019 Liver Sinusoid Meeting, 20th International Symposium on Cells of the Hepatic Sinusoid, held in Sydney, Australia, in September 2019. The meeting, which was organized by the International Society for Hepatic Sinusoidal Research, provided an update on the recent advances in the field of hepatic sinusoid cells in relation to cell biology, aging, and liver disease, with particular focus on the molecular and cellular targets involved in hepatic fibrosis, nonalcoholic hepatic steatohepatitis, alcoholic liver disease, hepatocellular carcinoma, and cirrhosis. In addition, the meeting highlighted the recent advances in regenerative medicine, targeted nanotechnologies, therapeutics, and novel methodologies.
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Affiliation(s)
- Martí Ortega‐Ribera
- Liver Vascular Biology Research GroupBarcelona Hepatic Hemodynamic UnitInstitut d’Investigacions Biomèdiques August Pi i SunyerCentro de Investigación Biomédica en Red de Enfermedades Hepáticas y DigestivasBarcelonaSpain
| | - Nicholas J. Hunt
- Centre for Education and Research on AgeingConcord Repatriation General HospitalANZAC Research InstituteAustralian Ageing and Alzheimers InstituteConcordSydneyNSWAustralia
- Faculty of Medicine and HealthUniversity of SydneySydneyNSWAustralia
| | - Jordi Gracia‐Sancho
- Liver Vascular Biology Research GroupBarcelona Hepatic Hemodynamic UnitInstitut d’Investigacions Biomèdiques August Pi i SunyerCentro de Investigación Biomédica en Red de Enfermedades Hepáticas y DigestivasBarcelonaSpain
- HepatologyDepartment of Biomedical ResearchUniversity of BernInselspitalBernSwitzerland
| | - Victoria C. Cogger
- Centre for Education and Research on AgeingConcord Repatriation General HospitalANZAC Research InstituteAustralian Ageing and Alzheimers InstituteConcordSydneyNSWAustralia
- Faculty of Medicine and HealthUniversity of SydneySydneyNSWAustralia
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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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Affiliation(s)
- Laurent Grosse
- Institute for Research on Cancer and Aging of Nice (IRCAN), INSERM, Université Côte d’Azur, CNRS, Nice, France
| | - Dmitry V. Bulavin
- Institute for Research on Cancer and Aging of Nice (IRCAN), INSERM, Université Côte d’Azur, CNRS, Nice, France
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20
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Lafoz E, Ruart M, Anton A, Oncins A, Hernández-Gea V. The Endothelium as a Driver of Liver Fibrosis and Regeneration. Cells 2020; 9:E929. [PMID: 32290100 PMCID: PMC7226820 DOI: 10.3390/cells9040929] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 04/05/2020] [Accepted: 04/06/2020] [Indexed: 02/07/2023] Open
Abstract
Liver fibrosis is a common feature of sustained liver injury and represents a major public health problem worldwide. Fibrosis is an active research field and discoveries in the last years have contributed to the development of new antifibrotic drugs, although none of them have been approved yet. Liver sinusoidal endothelial cells (LSEC) are highly specialized endothelial cells localized at the interface between the blood and other liver cell types. They lack a basement membrane and display open channels (fenestrae), making them exceptionally permeable. LSEC are the first cells affected by any kind of liver injury orchestrating the liver response to damage. LSEC govern the regenerative process initiation, but aberrant LSEC activation in chronic liver injury induces fibrosis. LSEC are also main players in fibrosis resolution. They maintain liver homeostasis and keep hepatic stellate cell and Kupffer cell quiescence. After sustained hepatic injury, they lose their phenotype and protective properties, promoting angiogenesis and vasoconstriction and contributing to inflammation and fibrosis. Therefore, improving LSEC phenotype is a promising strategy to prevent liver injury progression and complications. This review focuses on changes occurring in LSEC after liver injury and their consequences on fibrosis progression, liver regeneration, and resolution. Finally, a synopsis of the available strategies for LSEC-specific targeting is provided.
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Affiliation(s)
- Erica Lafoz
- Unidad de Hemodinámica Hepática, Servicio de Hepatología, Hospital Clínic, Universidad de Barcelona, Instituto de Investigaciones Biomédicas Augusto Pi Suñer (IDIBAPS), 08036 Barcelona, Spain; (E.L.); (M.R.); (A.A.); (A.O.)
| | - Maria Ruart
- Unidad de Hemodinámica Hepática, Servicio de Hepatología, Hospital Clínic, Universidad de Barcelona, Instituto de Investigaciones Biomédicas Augusto Pi Suñer (IDIBAPS), 08036 Barcelona, Spain; (E.L.); (M.R.); (A.A.); (A.O.)
| | - Aina Anton
- Unidad de Hemodinámica Hepática, Servicio de Hepatología, Hospital Clínic, Universidad de Barcelona, Instituto de Investigaciones Biomédicas Augusto Pi Suñer (IDIBAPS), 08036 Barcelona, Spain; (E.L.); (M.R.); (A.A.); (A.O.)
| | - Anna Oncins
- Unidad de Hemodinámica Hepática, Servicio de Hepatología, Hospital Clínic, Universidad de Barcelona, Instituto de Investigaciones Biomédicas Augusto Pi Suñer (IDIBAPS), 08036 Barcelona, Spain; (E.L.); (M.R.); (A.A.); (A.O.)
| | - Virginia Hernández-Gea
- Unidad de Hemodinámica Hepática, Servicio de Hepatología, Hospital Clínic, Universidad de Barcelona, Instituto de Investigaciones Biomédicas Augusto Pi Suñer (IDIBAPS), 08036 Barcelona, Spain; (E.L.); (M.R.); (A.A.); (A.O.)
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, 28029 Madrid, Spain
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21
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Hunt NJ, Lockwood GP, Le Couteur FH, McCourt PAG, Singla N, Kang SWS, Burgess A, Kuncic Z, Le Couteur DG, Cogger VC. Rapid Intestinal Uptake and Targeted Delivery to the Liver Endothelium Using Orally Administered Silver Sulfide Quantum Dots. ACS NANO 2020; 14:1492-1507. [PMID: 31976646 DOI: 10.1021/acsnano.9b06071] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Quantum dots (QDs) are used for imaging and transport of therapeutics. Here we demonstrate rapid absorption across the small intestine and targeted delivery of QDs with bound materials to the liver sinusoidal endothelial cells (LSECs) or hepatocytes in vitro and in vivo following oral administration. QDs were radiolabeled with 3H-oleic acid, with a fluorescent tag or 14C-metformin placed within a drug binding site. Three different biopolymer shell coatings were compared (formaldehyde-treated serum albumin (FSA), gelatin, heparin). Passage across the small intestine into mesenteric veins is mediated by clathrin endocytosis and micropinocytosis. 60% of an oral dose of QDs was rapidly distributed to the liver within 30 min, and this increased to 85% with FSA biopolymer coating. Uptake into LSECs also increased 3-fold with FSA coating, while uptake into hepatocytes was increased from 40% to 85% with gelatin biopolymer coating. Localization of QDs to LSECs was confirmed with immunofluorescence and transmission electron microscopy. 85% of QDs were cleared within 24 h of administration. The bioavailability of 14C-metformin 2 h post-ingestion was increased 5-fold by conjugation with QD-FSA, while uptake of metformin into LSECs was improved 50-fold by using these QDs. Endocytosis of QDs by SK-Hep1 cells (an LSEC immortal cell line) was via clathrin- and caveolae-mediated pathways with QDs taken up into lysosomes. In conclusion, we have shown high specificity targeting of the LSEC or hepatocytes after oral administration of QDs coated with a biopolymer layer of FSA or gelatin, which improved the bioavailability and delivery of metformin to LSECs.
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Affiliation(s)
- Nicholas J Hunt
- ANZAC Research Institute , Concord Repatriation General Hospital , Concord , New South Wales 2139 , Australia
- Aging and Alzheimer's Institute and Centre for Education and Research on Ageing , Concord Repatriation General Hospital , Concord , New South Wales 2139 , Australia
- Faculty of Medicine and Health , The University of Sydney , Sydney , New South Wales 2006 , Australia
- Charles Perkins Centre , The University of Sydney , Sydney , New South Wales 2006 , Australia
| | - Glen P Lockwood
- ANZAC Research Institute , Concord Repatriation General Hospital , Concord , New South Wales 2139 , Australia
- Aging and Alzheimer's Institute and Centre for Education and Research on Ageing , Concord Repatriation General Hospital , Concord , New South Wales 2139 , Australia
- Charles Perkins Centre , The University of Sydney , Sydney , New South Wales 2006 , Australia
| | - Frank H Le Couteur
- ANZAC Research Institute , Concord Repatriation General Hospital , Concord , New South Wales 2139 , Australia
| | - Peter A G McCourt
- Charles Perkins Centre , The University of Sydney , Sydney , New South Wales 2006 , Australia
- Department of Medical Biology , University of Tromsø - The Arctic University of Norway , Tromsø 9037 , Norway
| | - Nidhi Singla
- Nano Institute , The University of Sydney , Sydney , New South Wales 2006 , Australia
| | - Sun Woo Sophie Kang
- ANZAC Research Institute , Concord Repatriation General Hospital , Concord , New South Wales 2139 , Australia
- Aging and Alzheimer's Institute and Centre for Education and Research on Ageing , Concord Repatriation General Hospital , Concord , New South Wales 2139 , Australia
- Faculty of Medicine and Health , The University of Sydney , Sydney , New South Wales 2006 , Australia
| | - Andrew Burgess
- ANZAC Research Institute , Concord Repatriation General Hospital , Concord , New South Wales 2139 , Australia
- Faculty of Medicine and Health , The University of Sydney , Sydney , New South Wales 2006 , Australia
| | - Zdenka Kuncic
- Charles Perkins Centre , The University of Sydney , Sydney , New South Wales 2006 , Australia
- School of Physics , The University of Sydney , Sydney , New South Wales 2006 , Australia
- Nano Institute , The University of Sydney , Sydney , New South Wales 2006 , Australia
| | - David G Le Couteur
- ANZAC Research Institute , Concord Repatriation General Hospital , Concord , New South Wales 2139 , Australia
- Aging and Alzheimer's Institute and Centre for Education and Research on Ageing , Concord Repatriation General Hospital , Concord , New South Wales 2139 , Australia
- Faculty of Medicine and Health , The University of Sydney , Sydney , New South Wales 2006 , Australia
- Charles Perkins Centre , The University of Sydney , Sydney , New South Wales 2006 , Australia
| | - Victoria C Cogger
- ANZAC Research Institute , Concord Repatriation General Hospital , Concord , New South Wales 2139 , Australia
- Aging and Alzheimer's Institute and Centre for Education and Research on Ageing , Concord Repatriation General Hospital , Concord , New South Wales 2139 , Australia
- Faculty of Medicine and Health , The University of Sydney , Sydney , New South Wales 2006 , Australia
- Charles Perkins Centre , The University of Sydney , Sydney , New South Wales 2006 , Australia
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22
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Smedsrød B. Old Drugs to Reinvigorate Old Liver Cells. J Gerontol A Biol Sci Med Sci 2020; 75:266-267. [PMID: 31957810 DOI: 10.1093/gerona/glz278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Bård Smedsrød
- Department of Medical Biology, University of Tromsø, Norway
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23
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Shykholeslami Z, Abdi A, Barari A, Hosseini SA. The effect of aerobic training with Citrus aurantium L. on SIRT1 and PGC-1α gene expression levels in the liver tissue of elderly rats. JORJANI BIOMEDICINE JOURNAL 2019. [DOI: 10.29252/jorjanibiomedj.7.4.57] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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24
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Hunt NJ, Kang SWS, Lockwood GP, Le Couteur DG, Cogger VC. Hallmarks of Aging in the Liver. Comput Struct Biotechnol J 2019; 17:1151-1161. [PMID: 31462971 PMCID: PMC6709368 DOI: 10.1016/j.csbj.2019.07.021] [Citation(s) in RCA: 158] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 07/30/2019] [Accepted: 07/31/2019] [Indexed: 02/07/2023] Open
Abstract
While the liver demonstrates remarkable resilience during aging, there is growing evidence that it undergoes all the cellular hallmarks of aging, which increases the risk of liver and systemic disease. The aging process in the liver is driven by alterations of the genome and epigenome that contribute to dysregulation of mitochondrial function and nutrient sensing pathways, leading to cellular senescence and low-grade inflammation. These changes promote multiple phenotypic changes in all liver cells (hepatocytes, liver sinusoidal endothelial, hepatic stellate and Küpffer cells) and impairment of hepatic function. In particular, age-related changes in the liver sinusoidal endothelial cells are a significant but under-recognized risk factor for the development of age-related cardiometabolic disease. Liver aging is driven by transcription and metabolic epigenome alterations. This leads to cellular senescence and low-grade inflammation. Hepatocyte, sinusoidal endothelial, stellate and Küpffer cells undergoes the hallmarks of aging. Each cell type demonstrates phenotypical cellular changes with age.
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Key Words
- AMPK, 5′ adenosine monophosphate-activated protein kinase
- CR, caloric restriction
- Endothelial
- FOXO, forkhead box O
- Genetic
- HSC, hepatic stellate cell
- Hepatocyte
- IGF-1, insulin like growth factor 1
- IL-6, interleukin 6
- IL-8, interleukin 8
- KC, Küpffer cell
- LSEC, liver sinusoidal endothelial cell
- Mitochondrial dysfunction
- NAD, nicotinamide adenine dinucleotide
- NAFLD, non-alcoholic fatty liver disease
- NO, nitric oxide
- Nutrient sensing pathways
- PDGF, platelet derived growth factor
- PGC-1α, peroxisome proliferator-activated receptor gamma coactivator 1-α
- ROS, reactive oxygen species
- SIRT1, sirtuin 1
- Senescence
- TNFα, tumor necrosis factor alpha
- VEGF, vascular endothelial growth factor
- mTOR, mammalian target of rapamycin
- miR, microRNA
- αSMA, alpha smooth muscle actin
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Affiliation(s)
- Nicholas J Hunt
- ANZAC Research Institute, Aging and Alzheimer's Institute, Centre for Education and Research on Ageing, Concord Repatriation General Hospital, Concord, NSW, Australia.,The University of Sydney, Concord Clinical School, Sydney Medical School, Sydney, NSW, Australia.,The University of Sydney, Nutrition Ecology, Charles Perkins Centre, Sydney, NSW, Australia
| | - Sun Woo Sophie Kang
- ANZAC Research Institute, Aging and Alzheimer's Institute, Centre for Education and Research on Ageing, Concord Repatriation General Hospital, Concord, NSW, Australia.,The University of Sydney, Nutrition Ecology, Charles Perkins Centre, Sydney, NSW, Australia
| | - Glen P Lockwood
- ANZAC Research Institute, Aging and Alzheimer's Institute, Centre for Education and Research on Ageing, Concord Repatriation General Hospital, Concord, NSW, Australia.,The University of Sydney, Nutrition Ecology, Charles Perkins Centre, Sydney, NSW, Australia
| | - David G Le Couteur
- ANZAC Research Institute, Aging and Alzheimer's Institute, Centre for Education and Research on Ageing, Concord Repatriation General Hospital, Concord, NSW, Australia.,The University of Sydney, Concord Clinical School, Sydney Medical School, Sydney, NSW, Australia.,The University of Sydney, Nutrition Ecology, Charles Perkins Centre, Sydney, NSW, Australia
| | - Victoria C Cogger
- ANZAC Research Institute, Aging and Alzheimer's Institute, Centre for Education and Research on Ageing, Concord Repatriation General Hospital, Concord, NSW, Australia.,The University of Sydney, Concord Clinical School, Sydney Medical School, Sydney, NSW, Australia.,The University of Sydney, Nutrition Ecology, Charles Perkins Centre, Sydney, NSW, Australia
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25
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McLachlan AJ, Cogger VC. Editorial: Drug delivery in older people - unique challenges and important opportunities. Adv Drug Deliv Rev 2018; 135:1-2. [PMID: 30466511 DOI: 10.1016/j.addr.2018.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrew J McLachlan
- Sydney Pharmacy School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia; Australian National Health and Medical Research Council Centre for Research Excellence on Medicines and Ageing
| | - Victoria C Cogger
- Sydney Medical School, Faculty of Medicine and Health University of Sydney, NSW, Australia; Charles Perkins Centre, University of Sydney, New South Wales, Australia; Centre for Education and Research on Aging and Anzac Research Institute, Concord Hospital and University of Sydney, NSW, Australia
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