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Weiskirchen R, Penning LC. COMMD1, a multi-potent intracellular protein involved in copper homeostasis, protein trafficking, inflammation, and cancer. J Trace Elem Med Biol 2021; 65:126712. [PMID: 33482423 DOI: 10.1016/j.jtemb.2021.126712] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 12/10/2020] [Accepted: 01/04/2021] [Indexed: 12/11/2022]
Abstract
Copper is a trace element indispensable for life, but at the same time it is implicated in reactive oxygen species formation. Several inherited copper storage diseases are described of which Wilson disease (copper overload, mutations in ATP7B gene) and Menkes disease (copper deficiency, mutations in ATP7A gene) are the most prominent ones. After the discovery in 2002 of a novel gene product (i.e. COMMD1) involved in hepatic copper handling in Bedlington terriers, studies on the mechanism of action of COMMD1 revealed numerous non-copper related functions. Effects on hepatic copper handling are likely mediated via interactions with ATP7B. In addition, COMMD1 has many more interacting partners which guide their routing to either the plasma membrane or, often in an ubiquitination-dependent fashion, trigger their proteolysis via the S26 proteasome. By stimulating NF-κB ubiquitination, COMMD1 dampens an inflammatory reaction. Finally, targeting COMMD1 function can be a novel approach in the treatment of tumors.
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Affiliation(s)
- Ralf Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry (IFMPEGKC), RWTH Aachen University Hospital Aachen, Aachen, Germany
| | - Louis C Penning
- Clinical Sciences, Faculty of Veterinary Medicine, Utrecht University, Department of Clinical Sciences of Companion Animals, 3584 CM, Utrecht, the Netherlands.
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Li C, Wang T, Xiao Y, Li K, Meng X, James Kang Y. COMMD1 upregulation is involved in copper efflux from ischemic hearts. Exp Biol Med (Maywood) 2021; 246:607-616. [PMID: 33653183 PMCID: PMC7934151 DOI: 10.1177/1535370220969844] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 10/09/2020] [Indexed: 02/05/2023] Open
Abstract
Copper depletion is associated with myocardial ischemic infarction, in which copper metabolism MURR domain 1 (COMMD1) is increased. The present study was undertaken to test the hypothesis that the elevated COMMD1 is responsible for copper loss from the ischemic myocardium, thus worsening myocardial ischemic injury. Mice (C57BL/6J) were subjected to left anterior descending coronary artery permanent ligation to induce myocardial ischemic infarction. In the ischemic myocardium, copper reduction was associated with a significant increase in the protein level of COMMD1. A tamoxifen-inducible, cardiomyocyte -specific Commd1 knockout mouse (C57BL/6J) model (COMMD1CMC▲/▲) was generated using the Cre-LoxP recombination system. COMMD1CMC▲/▲ and wild-type littermates were subjected to the same permanent ligation of left anterior descending coronary artery. At the 7th day after ischemic insult, COMMD1 deficiency suppressed copper loss in the heart, along with preservation of vascular endothelial growth factor and vascular endothelial growth factor receptor 1 expression and the integrity of the vascular system in the ischemic myocardium. Corresponding to this change, infarct size of ischemic heart was reduced and myocardial contractile function was well preserved in COMMD1CMC▲/▲ mice. These results thus demonstrate that upregulation of COMMD1 is at least partially responsible for copper efflux from the ischemic heart. Cardiomyocyte-specific deletion of COMMD1 helps preserve the availability of copper for angiogenesis, thus suppressing myocardial ischemic dysfunction.
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Affiliation(s)
- Chen Li
- Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Tao Wang
- Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Ying Xiao
- Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Kui Li
- Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xia Meng
- Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Y James Kang
- Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
- Memphis Institute of Regenerative Medicine, University of Tennessee Health Science Center, Memphis, TN 38163, USA
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Corbee RJ, Penning LC. COMMD1 Exemplifies the Power of Inbred Dogs to Dissect Genetic Causes of Rare Copper-Related Disorders. Animals (Basel) 2021; 11:ani11030601. [PMID: 33668783 PMCID: PMC7996361 DOI: 10.3390/ani11030601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/22/2021] [Accepted: 02/22/2021] [Indexed: 12/13/2022] Open
Abstract
Wilson's Disease is a rare autosomal recessive disorder in humans, often presenting with hepatic copper overload. Finding the genetic cause of a rare disease, especially if it is related to food constituents like the trace element copper, is a Herculean task. This review describes examples of how the unique population structure of in-bred dog strains led to the discovery of a novel gene and two modifier genes involved in inherited copper toxicosis. COMMD1, after the discovery in 2002, was shown to be a highly promiscuous protein involved in copper transport, protein trafficking/degradation, regulation of virus replication, and inflammation. Mutations in the ATP7A and ATP7B proteins in Labrador retrievers and Dobermann dogs resulted in a wide variation in hepatic copper levels in these breeds. To our knowledge, numerous dog breeds with inherited copper toxicosis of unknown genetic origin exist. Therefore, the possibility that men's best friend will provide new leads in rare copper storage diseases seems realistic.
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Ribitsch I, Baptista PM, Lange-Consiglio A, Melotti L, Patruno M, Jenner F, Schnabl-Feichter E, Dutton LC, Connolly DJ, van Steenbeek FG, Dudhia J, Penning LC. Large Animal Models in Regenerative Medicine and Tissue Engineering: To Do or Not to Do. Front Bioeng Biotechnol 2020; 8:972. [PMID: 32903631 PMCID: PMC7438731 DOI: 10.3389/fbioe.2020.00972] [Citation(s) in RCA: 123] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 07/27/2020] [Indexed: 12/13/2022] Open
Abstract
Rapid developments in Regenerative Medicine and Tissue Engineering has witnessed an increasing drive toward clinical translation of breakthrough technologies. However, the progression of promising preclinical data to achieve successful clinical market authorisation remains a bottleneck. One hurdle for progress to the clinic is the transition from small animal research to advanced preclinical studies in large animals to test safety and efficacy of products. Notwithstanding this, to draw meaningful and reliable conclusions from animal experiments it is critical that the species and disease model of choice is relevant to answer the research question as well as the clinical problem. Selecting the most appropriate animal model requires in-depth knowledge of specific species and breeds to ascertain the adequacy of the model and outcome measures that closely mirror the clinical situation. Traditional reductionist approaches in animal experiments, which often do not sufficiently reflect the studied disease, are still the norm and can result in a disconnect in outcomes observed between animal studies and clinical trials. To address these concerns a reconsideration in approach will be required. This should include a stepwise approach using in vitro and ex vivo experiments as well as in silico modeling to minimize the need for in vivo studies for screening and early development studies, followed by large animal models which more closely resemble human disease. Naturally occurring, or spontaneous diseases in large animals remain a largely untapped resource, and given the similarities in pathophysiology to humans they not only allow for studying new treatment strategies but also disease etiology and prevention. Naturally occurring disease models, particularly for longer lived large animal species, allow for studying disorders at an age when the disease is most prevalent. As these diseases are usually also a concern in the chosen veterinary species they would be beneficiaries of newly developed therapies. Improved awareness of the progress in animal models is mutually beneficial for animals, researchers, human and veterinary patients. In this overview we describe advantages and disadvantages of various animal models including domesticated and companion animals used in regenerative medicine and tissue engineering to provide an informed choice of disease-relevant animal models.
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Affiliation(s)
- Iris Ribitsch
- Veterm, Department for Companion Animals and Horses, University Equine Hospital, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Pedro M. Baptista
- Laboratory of Organ Bioengineering and Regenerative Medicine, Health Research Institute of Aragon (IIS Aragon), Zaragoza, Spain
| | - Anna Lange-Consiglio
- Department of Veterinary Medicine, Università degli Studi di Milano, Milan, Italy
| | - Luca Melotti
- Department of Comparative Biomedicine and Food Science, University of Padua, Padua, Italy
| | - Marco Patruno
- Department of Comparative Biomedicine and Food Science, University of Padua, Padua, Italy
| | - Florien Jenner
- Veterm, Department for Companion Animals and Horses, University Equine Hospital, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Eva Schnabl-Feichter
- Clinical Unit of Small Animal Surgery, Department for Companion Animals and Horses, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Luke C. Dutton
- Department of Clinical Sciences and Services, Royal Veterinary College, Hertfordshire, United Kingdom
| | - David J. Connolly
- Clinical Unit of Small Animal Surgery, Department for Companion Animals and Horses, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Frank G. van Steenbeek
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Jayesh Dudhia
- Department of Clinical Sciences and Services, Royal Veterinary College, Hertfordshire, United Kingdom
| | - Louis C. Penning
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
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Baptista PM, Penning LC. Transplantable Liver Organoids, Too Many Cell Types to Choose: a Need for Scientific Self-Organization. CURRENT TRANSPLANTATION REPORTS 2020. [DOI: 10.1007/s40472-020-00266-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Abstract
Purpose of Review
Liver stem cells have been proposed as alternatives or additions for whole liver transplantations to accommodate the donor liver shortage. Various sources of liver stem cells have been described in experimental animal studies. Here we aim to compare the various studies.
Recent Findings
Irrespective of the experimental design, the percentage of long-lasting survival and functional recovery of transplanted cells is generally very low. An exception to this are the proliferating hepatocytes transplanted into Fah(-/-) Rag2−/−IL2rg−/− mice; here 4-month post-transplantation around 65% repopulation was observed, and 11/14 mice survived in contrast to zero survival in sham-treated animals.
Summary
Taking the different cellular sources for the organoids, the different maturation status of the transplanted cells, and the variable animal models into account, a paper-to-paper comparison is compromised. This lack of objective comparison restricts the translation of these model studies into clinical practice.
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Kruitwagen HS, Oosterhoff LA, van Wolferen ME, Chen C, Nantasanti Assawarachan S, Schneeberger K, Kummeling A, van Straten G, Akkerdaas IC, Vinke CR, van Steenbeek FG, van Bruggen LW, Wolfswinkel J, Grinwis GC, Fuchs SA, Gehart H, Geijsen N, Vries RG, Clevers H, Rothuizen J, Schotanus BA, Penning LC, Spee B. Long-Term Survival of Transplanted Autologous Canine Liver Organoids in a COMMD1-Deficient Dog Model of Metabolic Liver Disease. Cells 2020; 9:cells9020410. [PMID: 32053895 PMCID: PMC7072637 DOI: 10.3390/cells9020410] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/29/2020] [Accepted: 01/30/2020] [Indexed: 12/30/2022] Open
Abstract
The shortage of liver organ donors is increasing and the need for viable alternatives is urgent. Liver cell (hepatocyte) transplantation may be a less invasive treatment compared with liver transplantation. Unfortunately, hepatocytes cannot be expanded in vitro, and allogenic cell transplantation requires long-term immunosuppression. Organoid-derived adult liver stem cells can be cultured indefinitely to create sufficient cell numbers for transplantation, and they are amenable to gene correction. This study provides preclinical proof of concept of the potential of cell transplantation in a large animal model of inherited copper toxicosis, such as Wilson’s disease, a Mendelian disorder that causes toxic copper accumulation in the liver. Hepatic progenitors from five COMMD1-deficient dogs were isolated and cultured using the 3D organoid culture system. After genetic restoration of COMMD1 expression, the organoid-derived hepatocyte-like cells were safely delivered as repeated autologous transplantations via the portal vein. Although engraftment and repopulation percentages were low, the cells survived in the liver for up to two years post-transplantation. The low engraftment was in line with a lack of functional recovery regarding copper excretion. This preclinical study confirms the survival of genetically corrected autologous organoid-derived hepatocyte-like cells in vivo and warrants further optimization of organoid engraftment and functional recovery in a large animal model of human liver disease.
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Affiliation(s)
- Hedwig S. Kruitwagen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
- Correspondence: (H.S.K.); (B.S.)
| | - Loes A. Oosterhoff
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
| | - Monique E. van Wolferen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
| | - Chen Chen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
| | - Sathidpak Nantasanti Assawarachan
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
| | - Kerstin Schneeberger
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
| | - Anne Kummeling
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
| | - Giora van Straten
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
| | - Ies C. Akkerdaas
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
| | - Christel R. Vinke
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
| | - Frank G. van Steenbeek
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
| | - Leonie W.L. van Bruggen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
| | - Jeannette Wolfswinkel
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
| | - Guy C.M. Grinwis
- Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, 3584 CL Utrecht, The Netherlands;
| | - Sabine A. Fuchs
- Division of Pediatric Gastroenterology, Wilhelmina Children’s Hospital, University Medical Center Utrecht, 3584 EA Utrecht, The Netherlands;
| | - Helmuth Gehart
- Hubrecht Institute for Developmental Biology and Stem Cell Research and University Medical Center, Utrecht University, 3584 CT Utrecht, The Netherlands; (H.G.); (H.C.)
| | - Niels Geijsen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
- Hubrecht Institute for Developmental Biology and Stem Cell Research and University Medical Center, Utrecht University, 3584 CT Utrecht, The Netherlands; (H.G.); (H.C.)
| | - Robert G. Vries
- Hubrecht Organoid Technology (HUB), 3584 CT Utrecht, The Netherlands;
| | - Hans Clevers
- Hubrecht Institute for Developmental Biology and Stem Cell Research and University Medical Center, Utrecht University, 3584 CT Utrecht, The Netherlands; (H.G.); (H.C.)
| | - Jan Rothuizen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
| | - Baukje A. Schotanus
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
| | - Louis C. Penning
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
| | - Bart Spee
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, The Netherlands; (L.A.O.); (M.E.v.W.); (C.C.); (S.N.A.); (K.S.); (A.K.); (G.v.S.); (I.C.A.); (C.R.V.); (F.G.v.S.); (L.W.L.v.B.); (J.W.); (N.G.); (J.R.); (B.A.S.); (L.C.P.)
- Correspondence: (H.S.K.); (B.S.)
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Wu X, Chien H, van Wolferen ME, Kruitwagen HS, Oosterhoff LA, Penning LC. Reduced FXR Target Gene Expression in Copper-Laden Livers of COMMD1-Deficient Dogs. Vet Sci 2019; 6:vetsci6040078. [PMID: 31574998 PMCID: PMC6958483 DOI: 10.3390/vetsci6040078] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 09/24/2019] [Accepted: 09/25/2019] [Indexed: 12/29/2022] Open
Abstract
Wilson’s disease (WD), an autosomal recessive disorder, results in copper accumulation in the liver as a consequence of mutations in the gene ATPase copper transporting beta (ATP7B). The disease is characterized by chronic hepatitis, eventually resulting in liver cirrhosis. Recent studies have shown that dysregulation of nuclear receptors (NR) by high hepatic copper levels is an important event in the pathogenesis of liver disease in WD. Intracellular trafficking of ATP7B is mediated by COMMD1 and, in Bedlington terriers, a mutation in the COMMD1 gene results in high hepatic copper levels. Here, we demonstrate a reduced Farnesoid X nuclear receptor (FXR)-activity in liver biopsies of COMMD1-deficient dogs with copper toxicosis, a unique large animal model of WD. FXR-induced target genes, small heterodimer partner (SHP), and apolipoprotein E (ApoE) were down-regulated in liver samples from COMMD1-deficient dogs with hepatic copper accumulation. In contrast, the relative mRNA levels of the two CYP-enzymes (reduced by FXR activity) was similar in both groups. These data are in line with the previously observed reduced FXR activity in livers of ATP7B−/− mice and WD patients. Therefore, these data further corroborate on the importance of the COMMD1-deficient dogs as a large animal model for WD.
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Affiliation(s)
- Xiaoyan Wu
- Department Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, P.O. BOX 80.154, NL-3508 TD Utrecht, the Netherlands.
| | - Hsiaotzu Chien
- Department Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, P.O. BOX 80.154, NL-3508 TD Utrecht, the Netherlands.
| | - Monique E van Wolferen
- Department Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, P.O. BOX 80.154, NL-3508 TD Utrecht, the Netherlands.
| | - Hedwig S Kruitwagen
- Department Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, P.O. BOX 80.154, NL-3508 TD Utrecht, the Netherlands.
| | - Loes A Oosterhoff
- Department Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, P.O. BOX 80.154, NL-3508 TD Utrecht, the Netherlands.
| | - Louis C Penning
- Department Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, P.O. BOX 80.154, NL-3508 TD Utrecht, the Netherlands.
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8
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Kruitwagen HS, Fieten H, Penning LC. Towards Bioengineered Liver Stem Cell Transplantation Studies in a Preclinical Dog Model for Inherited Copper Toxicosis. Bioengineering (Basel) 2019; 6:E88. [PMID: 31557851 PMCID: PMC6955979 DOI: 10.3390/bioengineering6040088] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 09/13/2019] [Accepted: 09/17/2019] [Indexed: 01/20/2023] Open
Abstract
Wilson Disease is a rare autosomal recessive liver disorder in humans. Although its clinical presentation and age of onset are highly variable, hallmarks include signs of liver disease, neurological features and so-called Kayser-Fleischer rings in the eyes of the patient. Hepatic copper accumulation leads to liver disease and eventually to liver cirrhosis. Treatment options include life-long copper chelation therapy and/or decrease in copper intake. Eventually liver transplantations are indicated. Although clinical outcome of liver transplantations is favorable, the lack of suitable donor livers hampers large numbers of transplantations. As an alternative, cell therapies with hepatocytes or liver stem cells are currently under investigation. Stem cell biology in relation to pets is in its infancy. Due to the specific population structure of dogs, canine copper toxicosis is frequently encountered in various dog breeds. Since the histology and clinical presentation resemble Wilson Disease, we combined genetics, gene-editing, and matrices-based stem cell cultures to develop a translational preclinical transplantation model for inherited copper toxicosis in dogs. Here we describe the roadmap followed, starting from the discovery of a causative copper toxicosis mutation in a specific dog breed and culminating in transplantation of genetically-engineered autologous liver stem cells.
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Affiliation(s)
- Hedwig S Kruitwagen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584CM Utrecht, The Netherlands.
| | - Hille Fieten
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584CM Utrecht, The Netherlands.
| | - Louis C Penning
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, 3584CM Utrecht, The Netherlands.
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9
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Wu X, Mandigers PJJ, Watson AL, van den Ingh TSGAM, Leegwater PAJ, Fieten H. Association of the canine ATP7A and ATP7B with hepatic copper accumulation in Dobermann dogs. J Vet Intern Med 2019; 33:1646-1652. [PMID: 31254371 PMCID: PMC6639496 DOI: 10.1111/jvim.15536] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 05/14/2019] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Hepatic copper accumulation causes chronic hepatitis in dogs. Mutations in the copper transporters ATP7A and ATP7B were, respectively, associated with attenuation and enhancement of hepatic copper concentrations in Labrador Retrievers. There is a predisposition of Dobermanns to hepatitis with increased hepatic copper concentrations. OBJECTIVES To investigate whether the ATP7A:c.980C>T and ATP7B:c.4358G>A mutations identified in Labrador Retrievers were associated with hepatic copper concentrations in Dobermanns. ANIMALS Dobermanns from the Netherlands (n = 122) and the United States (n = 78). METHODS In this retrospective study, mutations in ATP7A and ATP7B were investigated as risk factors for hepatic copper accumulation in Dobermanns. Liver biopsies of 200 Dobermanns were evaluated by histochemical copper staining, quantitative copper measurement, or both modalities. ATP7A and ATP7B genotypes were obtained by Kompetitive Allele Specific PCR. A linear regression model was used to investigate an association between genotype and hepatic copper concentrations. RESULTS The ATP7A:c.980C>T was identified in both Dutch (2 heterozygous individuals) and American Dobermanns. In the American cohort, the minor allele frequency of the mutation was low (.081) and a possible effect on hepatic copper concentrations could not be established from this data set. A significant association of the ATP7B:c.4358G>A variant with increased hepatic copper concentrations in Dobermanns was observed. CONCLUSIONS AND CLINICAL IMPORTANCE The ATP7B:c.4358G>A variant could be a contributor to hepatic copper accumulation underlying the risk of development of copper-associated hepatitis in breeds other than the Labrador Retriever.
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Affiliation(s)
- Xiaoyan Wu
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Paul J J Mandigers
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | | | | | - Peter A J Leegwater
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Hille Fieten
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
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10
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Kruitwagen HS, Penning LC. Preclinical models of Wilson's disease, why dogs are catchy alternatives. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:S71. [PMID: 31179308 DOI: 10.21037/atm.2019.02.06] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Copper toxicosis is frequently encountered in various dog breeds. A number of differences and similarities occur between Wilson disease and copper toxicosis in Bedlington terriers, caused by a mutation in the COMMD1 gene, and copper toxicosis in Labrador retrievers, caused by mutations in both ATP7A and ATP7B gene. First the specific population structure of dog breeds is explained with reference to its applicability for genetic investigations. The relatively large body size (variable from less than 1 kg to over 50 kg) and life-span (over 10 years) of dogs facilitates preclinical studies on safety on long-term effects of novel procedures. Then copper toxicosis in the two dog breeds is described in detail with an emphasis on the functions of the causative proteins. Some of the advantages of this species for preclinical studies are described with an example of liver stem cell transplantations in COMMD1 deficient dogs. Since the genetic background of copper toxicosis in other dogs' breeds has not yet been elucidated, it is conceivable that novel copper-related gene products or modifier genes will be discovered. About a century after the Novel prize was awarded to the research on dogs (Pavlov), dogs are in spotlight again as important preclinical model animals.
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Affiliation(s)
- Hedwig S Kruitwagen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
| | - Louis C Penning
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, the Netherlands
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11
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Zhang H, Wang T, Qiu W, Han Y, Sun Q, Zeng J, Yan F, Zheng H, Li Z, Gao M. Monitoring the Opening and Recovery of the Blood-Brain Barrier with Noninvasive Molecular Imaging by Biodegradable Ultrasmall Cu 2- xSe Nanoparticles. NANO LETTERS 2018; 18:4985-4992. [PMID: 29995426 DOI: 10.1021/acs.nanolett.8b01818] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The reversible and controllable opening and recovery of the blood-brain barrier (BBB) is crucial for the treatment of brain diseases, and it is a big challenge to noninvasively monitor these processes. In this article, dual-modal photoacoustic imaging and single-photon-emission computed tomography imaging based on ultrasmall Cu2- xSe nanoparticles (3.0 nm) were used to noninvasively monitor the opening and recovery of the BBB induced by focused ultrasound in living mice. The ultrasmall Cu2- xSe nanoparticles were modified with poly(ethylene glycol) to exhibit a long blood circulation time. Both small size and long blood circulation time enable them to efficiently penetrate into the brain with the assistance of ultrasound, which resulted in a strong signal at the sonicated site and allowed for photoacoustic and single-photon emission computed tomography imaging monitoring the recovery of the opened BBB. The results of biodistribution, blood routine examination, and histological staining indicate that the accumulated Cu2- xSe nanoparticles could be excreted from the brain and other major organs after 15 days without causing side effects. By the combination of the advantages of noninvasive molecular imaging and focused ultrasound, the ultrasmall biocompatible Cu2- xSe nanoparticles holds great potential for the diagnosis and therapeutic treatment of brain diseases.
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Affiliation(s)
- Hao Zhang
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) , Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions , Suzhou 215123 , PR China
| | - Tingting Wang
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) , Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions , Suzhou 215123 , PR China
| | - Weibao Qiu
- Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055 , PR China
| | - Yaobao Han
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) , Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions , Suzhou 215123 , PR China
| | - Qiao Sun
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) , Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions , Suzhou 215123 , PR China
| | - Jianfeng Zeng
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) , Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions , Suzhou 215123 , PR China
| | - Fei Yan
- Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055 , PR China
| | - Hairong Zheng
- Paul C. Lauterbur Research Center for Biomedical Imaging, Institute of Biomedical and Health Engineering , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055 , PR China
| | - Zhen Li
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) , Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions , Suzhou 215123 , PR China
| | - Mingyuan Gao
- Center for Molecular Imaging and Nuclear Medicine, State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X) , Soochow University, Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions , Suzhou 215123 , PR China
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12
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Mochel JP, Jergens AE, Kingsbury D, Kim HJ, Martín MG, Allenspach K. Intestinal Stem Cells to Advance Drug Development, Precision, and Regenerative Medicine: A Paradigm Shift in Translational Research. AAPS JOURNAL 2017; 20:17. [PMID: 29234895 PMCID: PMC6044282 DOI: 10.1208/s12248-017-0178-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 11/21/2017] [Indexed: 12/23/2022]
Abstract
Recent advances in our understanding of the intestinal stem cell niche and the role of key signaling pathways on cell growth and maintenance have allowed the development of fully differentiated epithelial cells in 3D organoids. Stem cell-derived organoids carry significant levels of proteins that are natively expressed in the gut and have important roles in drug transport and metabolism. They are, therefore, particularly relevant to study the gastrointestinal (GI) absorption of oral medications. In addition, organoids have the potential to serve as a robust preclinical model for demonstrating the effectiveness of new drugs more rapidly, with more certainty, and at lower costs compared with live animal studies. Importantly, because they are derived from individuals with different genotypes, environmental risk factors and drug sensitivity profiles, organoids are a highly relevant screening system for personalized therapy in both human and veterinary medicine. Lastly, and in the context of patient-specific congenital diseases, orthotopic transplantation of engineered organoids could repair and/or replace damaged epithelial tissues reported in various GI diseases, such as inflammatory bowel disease, cystic fibrosis, and tuft enteropathy. Ongoing translational research on organoids derived from dogs with naturally occurring digestive disorders has the potential to improve the predictability of preclinical models used for optimizing the therapeutic management of severe chronic enteropathies in human patients.
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Affiliation(s)
- Jonathan P Mochel
- Department of Biomedical Sciences, Iowa State University College of Veterinary Medicine, 2448 Lloyd, 1809 S Riverside Dr., Ames, Iowa, 50011-1250, USA.
| | - Albert E Jergens
- Department of Veterinary Clinical Sciences, Iowa State University College of Veterinary Medicine, 50011-1250 Ames, Iowa, USA
| | - Dawn Kingsbury
- Department of Veterinary Clinical Sciences, Iowa State University College of Veterinary Medicine, 50011-1250 Ames, Iowa, USA
| | - Hyun Jung Kim
- Department of Biomedical Engineering, University of Texas at Austin, Austin, Texas, 78712, USA
| | - Martín G Martín
- Department of Pediatrics, University of California Los Angeles, California, Los Angeles, 90095-1782, USA
| | - Karin Allenspach
- Department of Veterinary Clinical Sciences, Iowa State University College of Veterinary Medicine, 50011-1250 Ames, Iowa, USA
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13
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Dirksen K, Spee B, Penning LC, van den Ingh TSGAM, Burgener IA, Watson AL, Groot Koerkamp M, Rothuizen J, van Steenbeek FG, Fieten H. Gene expression patterns in the progression of canine copper-associated chronic hepatitis. PLoS One 2017; 12:e0176826. [PMID: 28459846 PMCID: PMC5411060 DOI: 10.1371/journal.pone.0176826] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 04/18/2017] [Indexed: 12/26/2022] Open
Abstract
Copper is an essential trace element, but can become toxic when present in abundance. The severe effects of copper-metabolism imbalance are illustrated by the inherited disorders Wilson disease and Menkes disease. The Labrador retriever dog breed is a novel non-rodent model for copper-storage disorders carrying mutations in genes known to be involved in copper transport. Besides disease initiation and progression of copper accumulation, the molecular mechanisms and pathways involved in progression towards copper-associated chronic hepatitis still remain unclear. Using expression levels of targeted candidate genes as well as transcriptome micro-arrays in liver tissue of Labrador retrievers in different stages of copper-associated hepatitis, pathways involved in progression of the disease were studied. At the initial phase of increased hepatic copper levels, transcriptomic alterations in livers mainly revealed enrichment for cell adhesion, developmental, inflammatory, and cytoskeleton pathways. Upregulation of targeted MT1A and COMMD1 mRNA shows the liver's first response to rising intrahepatic copper concentrations. In livers with copper-associated hepatitis mainly an activation of inflammatory pathways is detected. Once the hepatitis is in the chronic stage, transcriptional differences are found in cell adhesion adaptations and cytoskeleton remodelling. In view of the high similarities in copper-associated hepatopathies between men and dog extrapolation of these dog data into human biomedicine seems feasible.
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Affiliation(s)
- Karen Dirksen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Bart Spee
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Louis C. Penning
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | | | - Iwan A. Burgener
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
- Department für Kleintiere und Pferde, Veterinärmedizinische Universität Wien, Vienna, Austria
| | | | | | - Jan Rothuizen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Frank G. van Steenbeek
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Hille Fieten
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
- * E-mail:
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14
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Abstract
Copper-associated hepatitis is recognized with increasing frequency in dogs. The disease is characterized by centrolobular hepatic copper accumulation, leading to hepatitis and eventually cirrhosis. The only way to establish the diagnosis is by histologic assessment of copper distribution and copper quantification in a liver biopsy. Treatment with the copper chelator d-penicillamine is the most commonly used treatment. In addition, a low-copper/high-zinc diet can help prevent accumulation or reaccumulation of hepatic copper. Mutations in the copper metabolism genes COMMD1 or ATP7A and ATP7B have been associated with hepatic copper concentrations in Bedlington terriers and Labrador retrievers respectively. In the Labrador retriever, dietary copper intake contributes strongly to the disease phenotype.
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Affiliation(s)
- Karen Dirksen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Hille Fieten
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.
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15
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Nantasanti S, Spee B, Kruitwagen HS, Chen C, Geijsen N, Oosterhoff LA, van Wolferen ME, Pelaez N, Fieten H, Wubbolts RW, Grinwis GC, Chan J, Huch M, Vries RRG, Clevers H, de Bruin A, Rothuizen J, Penning LC, Schotanus BA. Disease Modeling and Gene Therapy of Copper Storage Disease in Canine Hepatic Organoids. Stem Cell Reports 2015; 5:895-907. [PMID: 26455412 PMCID: PMC4649105 DOI: 10.1016/j.stemcr.2015.09.002] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 09/07/2015] [Accepted: 09/07/2015] [Indexed: 12/19/2022] Open
Abstract
The recent development of 3D-liver stem cell cultures (hepatic organoids) opens up new avenues for gene and/or stem cell therapy to treat liver disease. To test safety and efficacy, a relevant large animal model is essential but not yet established. Because of its shared pathologies and disease pathways, the dog is considered the best model for human liver disease. Here we report the establishment of a long-term canine hepatic organoid culture allowing undifferentiated expansion of progenitor cells that can be differentiated toward functional hepatocytes. We show that cultures can be initiated from fresh and frozen liver tissues using Tru-Cut or fine-needle biopsies. The use of Wnt agonists proved important for canine organoid proliferation and inhibition of differentiation. Finally, we demonstrate that successful gene supplementation in hepatic organoids of COMMD1-deficient dogs restores function and can be an effective means to cure copper storage disease.
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Affiliation(s)
- Sathidpak Nantasanti
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CM, the Netherlands
| | - Bart Spee
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CM, the Netherlands
| | - Hedwig S Kruitwagen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CM, the Netherlands
| | - Chen Chen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CM, the Netherlands; Hubrecht Institute and University Medical Centre, Utrecht, 3584 CT, the Netherlands
| | - Niels Geijsen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CM, the Netherlands; Hubrecht Institute and University Medical Centre, Utrecht, 3584 CT, the Netherlands
| | - Loes A Oosterhoff
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CM, the Netherlands
| | - Monique E van Wolferen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CM, the Netherlands
| | - Nicolas Pelaez
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CM, the Netherlands
| | - Hille Fieten
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CM, the Netherlands
| | - Richard W Wubbolts
- Centre for Cellular Imaging (CCI), Department of Biochemistry and Cell Biology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CL, the Netherlands
| | - Guy C Grinwis
- Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CL, the Netherlands
| | - Jefferson Chan
- Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720-1460, USA
| | - Meritxell Huch
- Hubrecht Institute and University Medical Centre, Utrecht, 3584 CT, the Netherlands
| | - Robert R G Vries
- Hubrecht Institute and University Medical Centre, Utrecht, 3584 CT, the Netherlands
| | - Hans Clevers
- Hubrecht Institute and University Medical Centre, Utrecht, 3584 CT, the Netherlands
| | - Alain de Bruin
- Department of Pathobiology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CL, the Netherlands; Department of Pediatrics, Division of Molecular Genetics, University Medical Center Groningen, University of Groningen, Groningen, 9713 AV, the Netherlands
| | - Jan Rothuizen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CM, the Netherlands
| | - Louis C Penning
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CM, the Netherlands
| | - Baukje A Schotanus
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, 3584 CM, the Netherlands.
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16
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Sridharan S, Allen AL, Kidney B, Al-Dissi AN. Metallothionein Expression in Dogs With Chronic Hepatitis and Its Correlation With Hepatic Fibrosis, Inflammation, and Ki-67 Expression. Vet Pathol 2015; 52:1127-33. [PMID: 26077783 DOI: 10.1177/0300985815588607] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The chronic form of primary hepatitis occurs commonly in dogs, and the etiology is rarely found. Metallothionein (MT) is a heavy metal-binding protein found in many organs, including the liver. MT was recently shown to enhance liver regeneration and decrease hepatic fibrosis in human beings. This study examined the expression of MT in 24 cases of chronic hepatitis in dogs using immunohistochemistry. To understand the role of MT as a determinant of hepatic inflammation, fibrosis, bile duct proliferation, and regeneration, we correlated its expression with histologic lesions of chronic hepatitis, such as hepatic inflammation, fibrosis, and bile duct proliferation, as well as hepatocellular growth fraction as measured by Ki67 immunolabeling. Hepatocellular growth fraction was used as a measure of hepatic regeneration. Regression analysis revealed a significant positive correlation between MT labeling intensity and growth fraction (r(2) = 0.29, P < .05). The percentage of MT-positive cells and the overall MT expression were both positively correlated with growth fraction (r(2) = 0.25 and 0.26, respectively; P < .05). A negative correlation was found between the overall MT labeling and fibrosis (r(2) = 0.18, P < .05). A similar trend of negative correlation was also found between the percentage of MT-positive cells and fibrosis, but the P value was not statistically significant (r(2) = 0.14, P = .0684). These findings suggest a protective role of MT in dogs affected by chronic hepatitis, similar to its role in human beings. These dogs may respond to treatment modules focusing on enhancing the expression of MT.
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Affiliation(s)
- S Sridharan
- Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada
| | - A L Allen
- Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada
| | - B Kidney
- Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada
| | - A N Al-Dissi
- Department of Veterinary Pathology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, Canada
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