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Yap KK, Schröder J, Gerrand YW, Dobric A, Kong AM, Fox AM, Knowles B, Banting SW, Elefanty AG, Stanley EG, Yeoh GC, Lockwood GP, Cogger VC, Morrison WA, Polo JM, Mitchell GM. Liver specification of human iPSC-derived endothelial cells transplanted into mouse liver. JHEP Rep 2024; 6:101023. [PMID: 38681862 PMCID: PMC11046210 DOI: 10.1016/j.jhepr.2024.101023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 01/19/2024] [Accepted: 01/23/2024] [Indexed: 05/01/2024] Open
Abstract
Background & Aims Liver sinusoidal endothelial cells (LSECs) are important in liver development, regeneration, and pathophysiology, but the differentiation process underlying their tissue-specific phenotype is poorly understood and difficult to study because primary human cells are scarce. The aim of this study was to use human induced pluripotent stem cell (hiPSC)-derived LSEC-like cells to investigate the differentiation process of LSECs. Methods hiPSC-derived endothelial cells (iECs) were transplanted into the livers of Fah-/-/Rag2-/-/Il2rg-/- mice and assessed over a 12-week period. Lineage tracing, immunofluorescence, flow cytometry, plasma human factor VIII measurement, and bulk and single cell transcriptomic analysis were used to assess the molecular and functional changes that occurred following transplantation. Results Progressive and long-term repopulation of the liver vasculature occurred as iECs expanded along the sinusoids between hepatocytes and increasingly produced human factor VIII, indicating differentiation into LSEC-like cells. To chart the developmental profile associated with LSEC specification, the bulk transcriptomes of transplanted cells between 1 and 12 weeks after transplantation were compared against primary human adult LSECs. This demonstrated a chronological increase in LSEC markers, LSEC differentiation pathways, and zonation. Bulk transcriptome analysis suggested that the transcription factors NOTCH1, GATA4, and FOS have a central role in LSEC specification, interacting with a network of 27 transcription factors. Novel markers associated with this process included EMCN and CLEC14A. Additionally, single cell transcriptomic analysis demonstrated that transplanted iECs at 4 weeks contained zonal subpopulations with a region-specific phenotype. Conclusions Collectively, this study confirms that hiPSCs can adopt LSEC-like features and provides insight into LSEC specification. This humanised xenograft system can be applied to further interrogate LSEC developmental biology and pathophysiology, bypassing current logistical obstacles associated with primary human LSECs. Impact and implications Liver sinusoidal endothelial cells (LSECs) are important cells for liver biology, but better model systems are required to study them. We present a pluripotent stem cell xenografting model that produces human LSEC-like cells. A detailed and longitudinal transcriptomic analysis of the development of LSEC-like cells is included, which will guide future studies to interrogate LSEC biology and produce LSEC-like cells that could be used for regenerative medicine.
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Affiliation(s)
- Kiryu K. Yap
- O’Brien Department of St Vincent’s Institute, Fitzroy, VIC, Australia
- University of Melbourne Department of Surgery, St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
| | - Jan Schröder
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia
- Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Australian Regenerative Medicine Institute, Clayton, VIC, Australia
- Doherty Institute & University of Melbourne Department of Microbiology and Immunology, Parkville, VIC, Australia
| | - Yi-Wen Gerrand
- O’Brien Department of St Vincent’s Institute, Fitzroy, VIC, Australia
| | - Aleksandar Dobric
- O’Brien Department of St Vincent’s Institute, Fitzroy, VIC, Australia
| | - Anne M. Kong
- O’Brien Department of St Vincent’s Institute, Fitzroy, VIC, Australia
| | - Adrian M. Fox
- University of Melbourne Department of Surgery, St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
- Hepatobiliary Surgery Unit, St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
| | - Brett Knowles
- University of Melbourne Department of Surgery, St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
- Hepatobiliary Surgery Unit, St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
| | - Simon W. Banting
- University of Melbourne Department of Surgery, St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
- Hepatobiliary Surgery Unit, St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
| | - Andrew G. Elefanty
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia
- Murdoch Children's Research Institute, The Royal Children's Hospital, Flemington Road, Parkville, VIC, Australia
- Department of Paediatrics, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, VIC, Australia
| | - Eduoard G. Stanley
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia
- Murdoch Children's Research Institute, The Royal Children's Hospital, Flemington Road, Parkville, VIC, Australia
- Department of Paediatrics, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, VIC, Australia
| | - George C. Yeoh
- Harry Perkins Institute of Medical Research and Centre for Medical Research, University of Western Australia, Perth, WA, Australia
| | - Glen P. Lockwood
- ANZAC Research Institute and University of Sydney, Concord, NSW, Australia
| | - Victoria C. Cogger
- ANZAC Research Institute and University of Sydney, Concord, NSW, Australia
| | - Wayne A. Morrison
- O’Brien Department of St Vincent’s Institute, Fitzroy, VIC, Australia
- University of Melbourne Department of Surgery, St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
- Australian Catholic University, Fitzroy, VIC, Australia
| | - Jose M. Polo
- Department of Anatomy and Developmental Biology, Monash University, Clayton, VIC, Australia
- Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Australian Regenerative Medicine Institute, Clayton, VIC, Australia
- Adelaide Centre for Epigenetics, South Australian Immunogenomics Cancer Institute, University of Adelaide, Adelaide, SA, Australia
| | - Geraldine M. Mitchell
- O’Brien Department of St Vincent’s Institute, Fitzroy, VIC, Australia
- University of Melbourne Department of Surgery, St Vincent’s Hospital Melbourne, Fitzroy, VIC, Australia
- Australian Catholic University, Fitzroy, VIC, Australia
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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. Nat Nanotechnol 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] [What about the content of this article? (0)] [Affiliation(s)] [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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3
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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4
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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: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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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5
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Wali JA, Milner AJ, Luk AWS, Pulpitel TJ, Dodgson T, Facey HJW, Wahl D, Kebede MA, Senior AM, Sullivan MA, Brandon AE, Yau B, Lockwood GP, Koay YC, Ribeiro R, Solon-Biet SM, Bell-Anderson KS, O'Sullivan JF, Macia L, Forbes JM, Cooney GJ, Cogger VC, Holmes A, Raubenheimer D, Le Couteur DG, Simpson SJ. Impact of dietary carbohydrate type and protein-carbohydrate interaction on metabolic health. Nat Metab 2021; 3:810-828. [PMID: 34099926 DOI: 10.1038/s42255-021-00393-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 04/19/2021] [Indexed: 02/07/2023]
Abstract
Reduced protein intake, through dilution with carbohydrate, extends lifespan and improves mid-life metabolic health in animal models. However, with transition to industrialised food systems, reduced dietary protein is associated with poor health outcomes in humans. Here we systematically interrogate the impact of carbohydrate quality in diets with varying carbohydrate and protein content. Studying 700 male mice on 33 isocaloric diets, we find that the type of carbohydrate and its digestibility profoundly shape the behavioural and physiological responses to protein dilution, modulate nutrient processing in the liver and alter the gut microbiota. Low (10%)-protein, high (70%)-carbohydrate diets promote the healthiest metabolic outcomes when carbohydrate comprises resistant starch (RS), yet the worst outcomes were with a 50:50 mixture of monosaccharides fructose and glucose. Our findings could explain the disparity between healthy, high-carbohydrate diets and the obesogenic impact of protein dilution by glucose-fructose mixtures associated with highly processed diets.
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Affiliation(s)
- Jibran A Wali
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia.
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia.
- The University of Sydney, ANZAC Research Institute, Sydney, New South Wales, Australia.
| | - Annabelle J Milner
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
| | - Alison W S Luk
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Tamara J Pulpitel
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Tim Dodgson
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Harrison J W Facey
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
| | - Devin Wahl
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- The University of Sydney, ANZAC Research Institute, Sydney, New South Wales, Australia
| | - Melkam A Kebede
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Alistair M Senior
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
| | - Mitchell A Sullivan
- Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - Amanda E Brandon
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, School of Medical Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Belinda Yau
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Glen P Lockwood
- The University of Sydney, ANZAC Research Institute, Sydney, New South Wales, Australia
| | - Yen Chin Koay
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- Heart Research Institute, The University of Sydney, Sydney, New South Wales, Australia
| | - Rosilene Ribeiro
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Samantha M Solon-Biet
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
| | - Kim S Bell-Anderson
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - John F O'Sullivan
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- Heart Research Institute, The University of Sydney, Sydney, New South Wales, Australia
- Department of Cardiology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Laurence Macia
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, School of Medical Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Josephine M Forbes
- Mater Research Institute, The University of Queensland, Translational Research Institute, Brisbane, Queensland, Australia
| | - Gregory J Cooney
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Medicine and Health, School of Medical Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Victoria C Cogger
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- The University of Sydney, ANZAC Research Institute, Sydney, New South Wales, Australia
| | - Andrew Holmes
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - David Raubenheimer
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - David G Le Couteur
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
- The University of Sydney, ANZAC Research Institute, Sydney, New South Wales, Australia
| | - Stephen J Simpson
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia.
- Faculty of Science, School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia.
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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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] [What about the content of this article? (0)] [Affiliation(s)] [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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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] [What about the content of this article? (0)] [Affiliation(s)] [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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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: 146] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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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Hunt NJ, Lockwood GP, Warren A, Mao H, McCourt PAG, Le Couteur DG, Cogger VC. Manipulating fenestrations in young and old liver sinusoidal endothelial cells. Am J Physiol Gastrointest Liver Physiol 2019; 316:G144-G154. [PMID: 30285464 PMCID: PMC6383376 DOI: 10.1152/ajpgi.00179.2018] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Fenestrations are pores within liver sinusoidal endothelial cells (LSECs) that enable the transfer of substrates (particularly insulin and lipoproteins) between blood and hepatocytes. With increasing age, there are marked reductions in fenestrations, referred to as pseudocapillarization. Currently, fenestrations are thought to be regulated by vascular endothelial growth factor and nitric oxide (NO) pathways promoting remodeling of the actin cytoskeleton and cell membrane lipid rafts. We investigated the effects of drugs that act on these pathways on fenestrations in old (18-24 mo) and young mice (3-4 mo). Isolated LSECs were incubated with either cytochalasin 7-ketocholesterol, sildenafil, amlodipine, simvastatin, 2, 5-dimethoxy-4-iodoamphetamine (DOI), bosentan, TNF-related apoptosis-inducing ligand (TRAIL) or nicotinamide mononucleotide (NMN). LSECs were visualized under scanning electron microscopy to quantify fenestration porosity, diameter, and frequency, as well as direct stochastic optical reconstruction microscopy to examine actin and NO synthase. In young and old LSECs, fenestration porosity, diameter and frequency were increased by 7-ketocholesterol, while porosity and/or frequency were increased with NMN, sildenafil, amlodipine, TRAIL, and cytochalasin D. In old mice only, bosentan and DOI increased fenestration porosity and/or frequency. Modification of the actin cytoskeleton was observed with all agents that increased fenestrations, while NO synthase was only increased by sildenafil, amlodipine, and TRAIL. In conclusion, agents that target NO, actin, or lipid rafts promote changes in fenestrations in mice LSECs. Regulation of fenestrations occurs via both NO-dependent and independent pathways. This work indicates that age-related defenestration can be reversed pharmacologically, which has potential translational relevance for dyslipidemia and insulin resistance. NEW & NOTEWORTHY We demonstrate the effects of multiple nitric oxide-dependent and -independent pharmaceutical agents on fenestrations of the liver sinusoidal endothelium. Fenestrations are reorganized in response to nicotinamide mononucleotide, sildenafil, amlodipine, and TNF-related apoptosis-inducing ligand. This work indicates that age-related defenestration can be reversed pharmacologically, which has potential translational relevance for dyslipidemia and insulin resistance in old age.
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Affiliation(s)
- Nicholas J. Hunt
- 1Centre for Education and Research on Ageing, Concord Repatriation General Hospital, Sydney, Australia,2Biogerontology Group, ANZAC Research Institute, Concord Repatriation General Hospital, Sydney, Australia,3Nutritional Ecology Group, Charles Perkins Centre, University of Sydney, Sydney, Australia
| | - Glen P. Lockwood
- 1Centre for Education and Research on Ageing, Concord Repatriation General Hospital, Sydney, Australia,2Biogerontology Group, ANZAC Research Institute, Concord Repatriation General Hospital, Sydney, Australia,3Nutritional Ecology Group, Charles Perkins Centre, University of Sydney, Sydney, Australia
| | - Alessandra Warren
- 1Centre for Education and Research on Ageing, Concord Repatriation General Hospital, Sydney, Australia
| | - Hong Mao
- 4Department of Medical Biology, University of Tromsø, Tromsø, Norway
| | - Peter A. G. McCourt
- 3Nutritional Ecology Group, Charles Perkins Centre, University of Sydney, Sydney, Australia,4Department of Medical Biology, University of Tromsø, Tromsø, Norway
| | - David G. Le Couteur
- 1Centre for Education and Research on Ageing, Concord Repatriation General Hospital, Sydney, Australia,2Biogerontology Group, ANZAC Research Institute, Concord Repatriation General Hospital, Sydney, Australia,3Nutritional Ecology Group, Charles Perkins Centre, University of Sydney, Sydney, Australia
| | - Victoria C. Cogger
- 1Centre for Education and Research on Ageing, Concord Repatriation General Hospital, Sydney, Australia,2Biogerontology Group, ANZAC Research Institute, Concord Repatriation General Hospital, Sydney, Australia,3Nutritional Ecology Group, Charles Perkins Centre, University of Sydney, Sydney, Australia
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Husaini Y, Lockwood GP, Nguyen TV, Tsai VWW, Mohammad MG, Russell PJ, Brown DA, Breit SN. Macrophage inhibitory cytokine-1 (MIC-1/GDF15) gene deletion promotes cancer growth in TRAMP prostate cancer prone mice. PLoS One 2015; 10:e0115189. [PMID: 25695521 PMCID: PMC4335046 DOI: 10.1371/journal.pone.0115189] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 11/11/2014] [Indexed: 12/21/2022] Open
Abstract
The divergent TGF-β superfamily member, macrophage inhibitory cytokine-1 (MIC-1/GDF15), is overexpressed by most cancers, including prostate cancer (PCa). Whilst its circulating levels are linked to cancer outcome, the role MIC-1/GDF15 plays in cancer development and progression is incompletely understood. To investigate its effect on PCa development and spread, we have used TRAMP prostate cancer prone mice bearing a germline deletion of MIC-1/GDF15 (TRAMPMIC-/-). On average TRAMPMIC-/- mice died about 5 weeks earlier and had larger prostatic tumors compared with TRAMP mice that were wild type for MIC-1/GDF15 (TRAMPMIC+/+). Additionally, at the time of death or ethical end point, even when adjusted for lifespan, there were no significant differences in the number of mice with metastases between the TRAMPMIC+/+ and TRAMPMIC-/- groups. However, consistent with our previous data, more than twice as many TRAMP mice overexpressing MIC-1/GDF15 (TRAMPfmsmic-1) had metastases than TRAMPMIC+/+ mice (p<0.0001). We conclude that germ line gene deletion of MIC-1/GDF15 leads to increased local tumor growth resulting in decreased survival consistent with an overall protective role for MIC-1/GDF15 in early primary tumor development. However, in advancing disease, as we have previously noted, MIC-1/GDF15 overexpression may promote local invasion and metastatic spread.
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Affiliation(s)
- Yasmin Husaini
- St. Vincent’s Centre for Applied Medical Research, St. Vincent’s Hospital and University of New South Wales, Sydney, NSW 2010, Australia
| | - Glen P. Lockwood
- St. Vincent’s Centre for Applied Medical Research, St. Vincent’s Hospital and University of New South Wales, Sydney, NSW 2010, Australia
| | - Trung V. Nguyen
- St. Vincent’s Centre for Applied Medical Research, St. Vincent’s Hospital and University of New South Wales, Sydney, NSW 2010, Australia
| | - Vicky Wang-Wei Tsai
- St. Vincent’s Centre for Applied Medical Research, St. Vincent’s Hospital and University of New South Wales, Sydney, NSW 2010, Australia
| | - Mohammad G. Mohammad
- St. Vincent’s Centre for Applied Medical Research, St. Vincent’s Hospital and University of New South Wales, Sydney, NSW 2010, Australia
| | - Pamela J. Russell
- Australian Prostate Cancer Research Centre-Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Translational Research Institute, Brisbane, QLD 4102, Australia
| | - David A. Brown
- St. Vincent’s Centre for Applied Medical Research, St. Vincent’s Hospital and University of New South Wales, Sydney, NSW 2010, Australia
- * E-mail: (SNB); (DAB)
| | - Samuel N. Breit
- St. Vincent’s Centre for Applied Medical Research, St. Vincent’s Hospital and University of New South Wales, Sydney, NSW 2010, Australia
- * E-mail: (SNB); (DAB)
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