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Klabukov I, Atiakshin D, Kogan E, Ignatyuk M, Krasheninnikov M, Zharkov N, Yakimova A, Grinevich V, Pryanikov P, Parshin V, Sosin D, Kostin AA, Shegay P, Kaprin AD, Baranovskii D. Post-Implantation Inflammatory Responses to Xenogeneic Tissue-Engineered Cartilage Implanted in Rabbit Trachea: The Role of Cultured Chondrocytes in the Modification of Inflammation. Int J Mol Sci 2023; 24:16783. [PMID: 38069106 PMCID: PMC10706106 DOI: 10.3390/ijms242316783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/08/2023] [Accepted: 11/13/2023] [Indexed: 12/18/2023] Open
Abstract
Immune responses to tissue-engineered grafts made of xenogeneic materials remain poorly studied. The scope of current investigations is limited by the lack of information on orthotopically implanted grafts. A deeper understanding of these processes is of great importance since innovative surgical approaches include the implantation of xenogeneic decellularized scaffolds seeded by cells. The purpose of our work is to study the immunological features of tracheal repair during the implantation of tissue-engineered constructs based on human xenogeneic scaffolds modified via laser radiation in rabbits. The samples were stained with hematoxylin and Safranin O, and they were immunostained with antibodies against tryptase, collagen II, vimentin, and CD34. Immunological and inflammatory responses were studied by counting immune cells and evaluating blood vessels and collagen. Leukocyte-based inflammation prevailed during the implantation of decellularized unseeded scaffolds; meanwhile, plasma cells were significantly more abundant in tissue-engineered constructs. Mast cells were insignificantly more abundant in tissue-engineered construct samples. Conclusions: The seeding of decellularized xenogeneic cartilage with chondrocytes resulted in a change in immunological reactions upon implantation, and it was associated with plasma cell infiltration. Tissue-engineered grafts widely differed in design, including the type of used cells. The question of immunological response depending on the tissue-engineered graft composition requires further investigation.
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Affiliation(s)
- Ilya Klabukov
- National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva St. 4, 249036 Obninsk, Russia; (A.Y.)
- Department of Urology and Operative Nephrology, Patrice Lumumba Peoples Friendship University of Russia (RUDN University), 117198 Moscow, Russia
- Obninsk Institute for Nuclear Power Engineering, National Research Nuclear University MEPhI, 249031 Obninsk, Russia
| | - Dmitri Atiakshin
- Scientific and Educational Resource Center for Innovative Technologies of Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis, Patrice Lumumba Peoples Friendship University of Russia (RUDN University), 117198 Moscow, Russia
| | - Evgenia Kogan
- Strukov Department of Pathological Anatomy, Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Michael Ignatyuk
- Scientific and Educational Resource Center for Innovative Technologies of Immunophenotyping, Digital Spatial Profiling and Ultrastructural Analysis, Patrice Lumumba Peoples Friendship University of Russia (RUDN University), 117198 Moscow, Russia
| | - Mikhail Krasheninnikov
- Department of Urology and Operative Nephrology, Patrice Lumumba Peoples Friendship University of Russia (RUDN University), 117198 Moscow, Russia
| | - Nickolay Zharkov
- Strukov Department of Pathological Anatomy, Sechenov First Moscow State Medical University (Sechenov University), 119991 Moscow, Russia
| | - Anna Yakimova
- National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva St. 4, 249036 Obninsk, Russia; (A.Y.)
| | - Vyacheslav Grinevich
- National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva St. 4, 249036 Obninsk, Russia; (A.Y.)
| | - Pavel Pryanikov
- Russian Child Clinical Hospital, Pirogov Russian National Research Medical University, 119571 Moscow, Russia
| | - Vladimir Parshin
- National Medical Research Center of Phthisiopulmonology and Infectious Diseases of the Ministry of Health of the Russian Federation, 127473 Moscow, Russia
| | - Dmitry Sosin
- Centre for Strategic Planning and Management of Biomedical Health Risks of the Federal Medical Biological Agency, 119121 Moscow, Russia
| | - Andrey A. Kostin
- Department of Urology and Operative Nephrology, Patrice Lumumba Peoples Friendship University of Russia (RUDN University), 117198 Moscow, Russia
| | - Peter Shegay
- National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva St. 4, 249036 Obninsk, Russia; (A.Y.)
| | - Andrey D. Kaprin
- National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva St. 4, 249036 Obninsk, Russia; (A.Y.)
- Department of Urology and Operative Nephrology, Patrice Lumumba Peoples Friendship University of Russia (RUDN University), 117198 Moscow, Russia
| | - Denis Baranovskii
- National Medical Research Radiological Centre of the Ministry of Health of the Russian Federation, Koroleva St. 4, 249036 Obninsk, Russia; (A.Y.)
- Department of Urology and Operative Nephrology, Patrice Lumumba Peoples Friendship University of Russia (RUDN University), 117198 Moscow, Russia
- Department of Biomedicine, University of Basel, Petersplatz 1, 4001 Basel, Switzerland
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Morticelli L, Rossdam C, Cajic S, Böthig D, Magdei M, Tuladhar SR, Petersen B, Fischer K, Rapp E, Korossis S, Haverich A, Schnieke A, Niemann H, Buettner FFR, Hilfiker A. Genetic knockout of porcine GGTA1 or CMAH/GGTA1 is associated with the emergence of neo-glycans. Xenotransplantation 2023; 30:e12804. [PMID: 37148126 DOI: 10.1111/xen.12804] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/28/2023] [Accepted: 04/25/2023] [Indexed: 05/07/2023]
Abstract
BACKGROUND Pig-derived tissues could overcome the shortage of human donor organs in transplantation. However, the glycans with terminal α-Gal and Neu5Gc, which are synthesized by enzymes, encoded by the genes GGTA1 and CMAH, are known to play a major role in immunogenicity of porcine tissue, ultimately leading to xenograft rejection. METHODS The N-glycome and glycosphingolipidome of native and decellularized porcine pericardia from wildtype (WT), GGTA1-KO and GGTA1/CMAH-KO pigs were analyzed by multiplexed capillary gel electrophoresis coupled to laser-induced fluorescence detection. RESULTS We identified biantennary and core-fucosylated N-glycans terminating with immunogenic α-Gal- and α-Gal-/Neu5Gc-epitopes on pericardium of WT pigs that were absent in GGTA1 and GGTA1/CMAH-KO pigs, respectively. Levels of N-glycans terminating with galactose bound in β(1-4)-linkage to N-acetylglucosamine and their derivatives elongated by Neu5Ac were increased in both KO groups. N-glycans capped with Neu5Gc were increased in GGTA1-KO pigs compared to WT, but were not detected in GGTA1/CMAH-KO pigs. Similarly, the ganglioside Neu5Gc-GM3 was found in WT and GGTA1-KO but not in GGTA1/CMAH-KO pigs. The applied detergent based decellularization efficiently removed GSL glycans. CONCLUSION Genetic deletion of GGTA1 or GGTA1/CMAH removes specific epitopes providing a more human-like glycosylation pattern, but at the same time changes distribution and levels of other porcine glycans that are potentially immunogenic.
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Affiliation(s)
- Lucrezia Morticelli
- Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Hannover Medical School, Hannover, Germany
| | - Charlotte Rossdam
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany
| | - Samanta Cajic
- Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany
- glyXera GmbH, Magdeburg, Germany
| | - Dietmar Böthig
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - Mikhail Magdei
- Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Hannover Medical School, Hannover, Germany
| | - Sugat Ratna Tuladhar
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - Björn Petersen
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut, Mariensee/Neustadt am Ruebenberge, Germany
| | - Konrad Fischer
- Chair of Livestock Biotechnology, School of Life Sciences Weihenstephan, Technische Universität München, Freising, Germany
| | - Erdmann Rapp
- Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany
- glyXera GmbH, Magdeburg, Germany
| | - Sotirios Korossis
- Cardiopulmonary Regenerative Engineering (CARE) Group, Centre for Biological Engineering (CBE), Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, UK
| | - Axel Haverich
- Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Hannover Medical School, Hannover, Germany
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - Angelika Schnieke
- Chair of Livestock Biotechnology, School of Life Sciences Weihenstephan, Technische Universität München, Freising, Germany
| | - Heiner Niemann
- Clinic for Gastroenterology, Hepatology & Endocrinology, Hannover Medical School (MHH), Hannover, Germany
| | - Falk F R Buettner
- Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany
| | - Andres Hilfiker
- Leibniz Research Laboratories for Biotechnology and Artificial Organs (LEBAO), Hannover Medical School, Hannover, Germany
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
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Krajnik K, Mietkiewska K, Skowronska A, Kordowitzki P, Skowronski MT. Oogenesis in Women: From Molecular Regulatory Pathways and Maternal Age to Stem Cells. Int J Mol Sci 2023; 24:ijms24076837. [PMID: 37047809 PMCID: PMC10095116 DOI: 10.3390/ijms24076837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/31/2023] [Accepted: 04/03/2023] [Indexed: 04/08/2023] Open
Abstract
It is a well-known fact that the reproductive organs in women, especially oocytes, are exposed to numerous regulatory pathways and environmental stimuli. The maternal age is one cornerstone that influences the process of oocyte fertilization. More precisely, the longer a given oocyte is in the waiting-line to be ovulated from menarche to menopause, the longer the duration from oogenesis to fertilization, and therefore, the lower the chances of success to form a viable embryo. The age of menarche in girls ranges from 10 to 16 years, and the age of menopause in women ranges from approximately 45 to 55 years. Researchers are paying attention to the regulatory pathways that are impacting the oocyte at the very beginning during oogenesis in fetal life to discover genes and proteins that could be crucial for the oocyte’s lifespan. Due to the general trend in industrialized countries in the last three decades, women are giving birth to their first child in their thirties. Therefore, maternal age has become an important factor impacting oocytes developmental competence, since the higher a woman’s age, the higher the chances of miscarriage due to several causes, such as aneuploidy. Meiotic failures during oogenesis, such as, for instance, chromosome segregation failures or chromosomal non-disjunction, are influencing the latter-mentioned aging-related phenomenon too. These errors early in life of women can lead to sub- or infertility. It cannot be neglected that oogenesis is a precisely orchestrated process, during which the oogonia and primary oocytes are formed, and RNA synthesis takes place. These RNAs are crucial for oocyte growth and maturation. In this review, we intend to describe the relevance of regulatory pathways during the oogenesis in women. Furthermore, we focus on molecular pathways of oocyte developmental competence with regard to maternal effects during embryogenesis. On the background of transcriptional mechanisms that enable the transition from a silenced oocyte to a transcriptionally active embryo, we will briefly discuss the potential of induced pluripotent stem cells.
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Affiliation(s)
- Kornelia Krajnik
- Department of Basic and Preclinical Sciences, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, 87-100 Torun, Poland
| | - Klaudia Mietkiewska
- Department of Basic and Preclinical Sciences, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, 87-100 Torun, Poland
| | - Agnieszka Skowronska
- Department of Human Physiology and Pathophysiology, School of Medicine, Collegium Medicum, University of Warmia and Mazury, 10-719 Olsztyn, Poland
| | - Pawel Kordowitzki
- Department of Basic and Preclinical Sciences, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, 87-100 Torun, Poland
| | - Mariusz T. Skowronski
- Department of Basic and Preclinical Sciences, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, 87-100 Torun, Poland
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Stand der Technik und Durchbruch bei der kardialen Xenotransplantation. ZEITSCHRIFT FUR HERZ THORAX UND GEFASSCHIRURGIE 2022. [DOI: 10.1007/s00398-022-00534-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Carrier AN, Verma A, Mohiuddin M, Pascual M, Muller YD, Longchamp A, Bhati C, Buhler LH, Maluf DG, Meier RPH. Xenotransplantation: A New Era. Front Immunol 2022; 13:900594. [PMID: 35757701 PMCID: PMC9218200 DOI: 10.3389/fimmu.2022.900594] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Accepted: 05/02/2022] [Indexed: 11/13/2022] Open
Abstract
Organ allotransplantation has now reached an impassable ceiling inherent to the limited supply of human donor organs. In the United States, there are currently over 100,000 individuals on the national transplant waiting list awaiting a kidney, heart, and/or liver transplant. This is in contrast with only a fraction of them receiving a living or deceased donor allograft. Given the morbidity, mortality, costs, or absence of supportive treatments, xenotransplant has the potential to address the critical shortage in organ grafts. Last decade research efforts focused on creation of donor organs from pigs with various genes edited out using CRISPR technologies and utilizing non-human primates for trial. Three groups in the United States have recently moved forward with trials in human subjects and obtained initial successful results with pig-to-human heart and kidney xenotransplantation. This review serves as a brief discussion of the recent progress in xenotransplantation research, particularly as it concerns utilization of porcine heart, renal, and liver xenografts in clinical practice.
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Affiliation(s)
- Amber N Carrier
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Anjali Verma
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Muhammad Mohiuddin
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Manuel Pascual
- Department of Vascular Surgery, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Yannick D Muller
- Division of Immunology and Allergy, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Alban Longchamp
- Department of Vascular Surgery, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Chandra Bhati
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Leo H Buhler
- Faculty of Science and Medicine, Section of Medicine, University of Fribourg, Fribourg, Switzerland
| | - Daniel G Maluf
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Raphael P H Meier
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, United States
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Birdwhistell KE, Hurley DJ, Heins B, Peroni JF. Evaluation of equine xenogeneic mixed lymphocyte reactions using 5-ethynyl-2'-deoxyuridine (EdU). Vet Immunol Immunopathol 2022; 249:110430. [PMID: 35525064 DOI: 10.1016/j.vetimm.2022.110430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 04/29/2022] [Accepted: 05/01/2022] [Indexed: 11/19/2022]
Abstract
Allogeneic solid organ transplantation is currently the only treatment option for end stage organ disease. The shortage of available donor organs has driven efforts to utilize xenogeneic organs for transplantation. In vitro methods for evaluating immune-compatibility are a quick and low cost means of screening novel tissue products prior to more involved, expensive, and invasive live animal studies. Recently, a new analog of the DNA base thymidine, 5-ethynyl-2'-deoxyuridine (EdU), was developed. It may be used in a fast, efficient and specific means of evaluating cell proliferation via flow cytometry. This study was designed to test and optimize this platform for assessing equine xenogeneic one-way mixed lymphocyte reaction (MLR) to porcine stimulator cells. Furthermore, it was hypothesized that an enriched T-lymphocyte (T-cell) population would generate a stronger proliferative response to stimulation, and higher levels of cytokine production when compared to unfractionated peripheral blood mononuclear cells (PBMCs). PBMCs and T-cells were isolated from 3 horses and 4 pigs. Equine xenogeneic MLRs were set up using porcine allogeneic MLRs as a reference for clinically acceptable levels of cell proliferation. Equine T-cells showed significantly greater EdU incorporation in one-way xenogeneic MLRs than equine PBMCs. However, there was no significant difference in cell proliferation between porcine T-cell and PBMC as responders in allogenic one-way MLRs. Given the results of this study, we consider that enriched equine T-cells should be used in preference to unfractionated PBMCs when attempting to evaluate the equine xenogeneic response using the EdU assay as an indicator of suitability for transplant in vivo.
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Affiliation(s)
- Kate E Birdwhistell
- Department of Large Animal Medicine and Surgery, University of Georgia College of Veterinary Medicine, 2200 College Station Rd, Athens, GA 30602, USA.
| | - David J Hurley
- Department of Population Health, University of Georgia College of Veterinary Medicine, 2200 College Station Rd, Athens, GA 30602, USA
| | - Bradley Heins
- Department of Population Health, University of Georgia College of Veterinary Medicine, 2200 College Station Rd, Athens, GA 30602, USA
| | - John F Peroni
- Department of Large Animal Medicine and Surgery, University of Georgia College of Veterinary Medicine, 2200 College Station Rd, Athens, GA 30602, USA
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Meier RPH. Invited commentary. Xenotransplantation 2022; 29:e12736. [PMID: 35166408 DOI: 10.1111/xen.12736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 01/19/2022] [Accepted: 01/19/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Raphael P H Meier
- Department of Surgery, University of Maryland School of Medicine, Baltimore, Maryland, USA
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Koehler N, Buhler L, Egger B, Gonelle-Gispert C. Multipotent Mesenchymal Stromal Cells Interact and Support Islet of Langerhans Viability and Function. Front Endocrinol (Lausanne) 2022; 13:822191. [PMID: 35222280 PMCID: PMC8864309 DOI: 10.3389/fendo.2022.822191] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/13/2022] [Indexed: 11/13/2022] Open
Abstract
Type 1 diabetes (T1D) is a widespread disease, affecting approximately 41.5 million people worldwide. It is generally treated with exogenous insulin, maintaining physiological blood glucose levels but also leading to long-term therapeutic complications. Pancreatic islet cell transplantation offers a potential alternative treatment to insulin injections. Shortage of human organ donors has raised the interest for porcine islet xenotransplantation. Neonatal porcine islets are highly available, can proliferate and mature in vitro as well as after transplantation in vivo. Despite promising preclinical results, delayed insulin secretion caused by immaturity and immunogenicity of the neonatal porcine islets remains a challenge for their clinical application. Multipotent mesenchymal stromal cells (MSCs) are known to have pro-angiogenic, anti-inflammatory and immunomodulatory effects. The current state of research emphasizes the great potential of co-culture and co-transplantation of islet cells with MSCs. Studies have shown enhanced islet proliferation and maturation, insulin secretion and graft survival, resulting in an improved graft outcome. This review summarizes the immunomodulatory and anti-inflammatory properties of MSC in the context of islet transplantation.
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Affiliation(s)
- Naomi Koehler
- Surgical Research Unit, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
| | - Leo Buhler
- Department of Surgery, Cantonal Hospital Fribourg, Fribourg, Switzerland
| | - Bernhard Egger
- Surgical Research Unit, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
- Department of Surgery, Cantonal Hospital Fribourg, Fribourg, Switzerland
| | - Carmen Gonelle-Gispert
- Surgical Research Unit, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
- *Correspondence: Carmen Gonelle-Gispert,
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Yao J, Yu Y, Nyberg SL. Induced Pluripotent Stem Cells for the Treatment of Liver Diseases: Novel Concepts. Cells Tissues Organs 2022; 211:368-384. [PMID: 32615573 PMCID: PMC7775900 DOI: 10.1159/000508182] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 04/24/2020] [Indexed: 01/03/2023] Open
Abstract
Millions of people worldwide with incurable liver disease die because of inadequate treatment options and limited availability of donor organs for liver transplantation. Regenerative medicine as an innovative approach to repairing and replacing cells, tissues, and organs is undergoing a major revolution due to the unprecedented need for organs for patients around the world. Induced pluripotent stem cells (iPSCs) have been widely studied in the field of liver regeneration and are considered to be the most promising candidate therapies. This review will conclude the current state of efforts to derive human iPSCs for potential use in the modeling and treatment of liver disease.
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Affiliation(s)
- Jia Yao
- William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, MN, USA.,Clinical Research and Project Management Office, The First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Yue Yu
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University; Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences, NHC Key Laboratory of Living Donor Liver Transplantation; Nanjing, China
| | - Scott L. Nyberg
- William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, MN, USA.,Corresponding Author: Scott L. Nyberg, William J. von Liebig Center for Transplantation and Clinical Regeneration, Mayo Clinic, Rochester, MN 55905, USA, Tel: Rochester, MN 55905, USA, Fax: (507) 284-2511,
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Reyneke M, Kerckhof N, Dherwani R, Borry P. Should you need an organ… Flemish secondary school students' attitudes toward xenotransplantation and transgenetic organ donation. Xenotransplantation 2021; 28:e12707. [PMID: 34850461 DOI: 10.1111/xen.12707] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 06/07/2021] [Accepted: 07/05/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND The supply of human organs available for transplantation remains grossly inadequate globally. Animal-to-human transplantation, and even more so humanized organ grown in animals, holds promising results for the start of clinical trials in humans. Very little is known about the public's willingness to accept different xenotransplantation techniques. This study aims to determine attitudes toward human-to-human transplantation, animal-to-human transplantation, and chimera-to-human transplantation in the Belgium context. METHODS Secondary school students from Flanders, Belgium, were surveyed between January and June 2019. Socio-demographic details likely to influence participants' attitudes were gathered. Participants were presented with three hypothetical cases (human-to-human transplantation, animal-to-human transplantation, and chimera-to-human transplantation) and asked about their willingness to accept the particular organ. Their risk appetite to accept organs with potentially worse outcomes than the status quo was also evaluated. RESULTS Seven hundred forty-one complete questionnaires were analyzed. It can be concluded that Flemish secondary school students favored the techniques of xenotransplantation to a lesser extent than allotransplantation; however, most of them did consider it a good solution for organ shortage. Compared to animal-to-human transplantation, chimera-to-human transplantation showed a more positive attitude among the respondents when considered a good organ transplantation solution. CONCLUSION Flemish secondary school students favored the techniques of xenotransplantation to a lesser extent than allotransplantation; however, most of them did consider it a good solution for organ shortage. In comparison to animal-to-human transplantation, chimera-to-human transplantation showed a more positive attitude among the respondents when considered a good solution for organ transplantation.
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Affiliation(s)
- Maryn Reyneke
- Department of Public Health and Primary Care, KU Leuven, Centre for Biomedical Ethics and Law, Leuven, Belgium
| | - Nel Kerckhof
- Department of Public Health and Primary Care, KU Leuven, Centre for Biomedical Ethics and Law, Leuven, Belgium
| | - Rachna Dherwani
- Department of Biology, Rutgers University, Camden, New Jersey, USA
| | - Pascal Borry
- Department of Public Health and Primary Care, KU Leuven, Centre for Biomedical Ethics and Law, Leuven, Belgium
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Huang CP, Liu LC, Chang CC, Wu CC, Shyr CR. Intratumoral xenogeneic tissue-specific cell immunotherapy inhibits tumor growth by increasing antitumor immunity in murine triple negative breast and pancreatic tumor models. Cancer Lett 2021; 545:115478. [PMID: 35902043 DOI: 10.1016/j.canlet.2021.10.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 10/18/2021] [Accepted: 10/31/2021] [Indexed: 12/13/2022]
Abstract
Low immunogenicity in tumors and the immunosuppressive tumor microenvironment (TME) represent major obstacles to the full success of immunotherapy in cancer patients. A novel intratumoral xenogeneic tissue-specific cell immunotherapeutic approach could overcome the obstacles. Murine 4T1 triple negative breast cancer (TNBC) cells and Pan18 pancreatic ductal adenocarcinoma (PDAC) cells were used for establishing syngeneic graft tumor models to evaluate antitumor effect of intratumoral injection of xenogeneic tissue-specific cells. Responses to treatment were assessed by measuring tumor growth and tumor weight of the tumor-bearing mice. To investigate the mechanisms of action, tumor histology and immunohistochemistry and cytokine gene expression were measured. Splenic lymphocytes proliferation, cytokine production and cytotoxicity activities were also assessed. The findings showed that intratumoral injection of xenogeneic tissue-specific cells in monotherapy and combination with chemotherapy inhibit tumor growth. The therapeutic efficacy of intratumoral xenogeneic cells was significantly enhanced by the addition of cytotoxic chemotherapeutic agents. Mice that received combined treatment showed maximal attenuation in tumor growth rate. The antitumor immunity was explained by altered immune cell infiltration in tumors and immune cell functions. Our findings demonstrate that xenogeneic tissue-specific cells given intratumorally, provide a potent antitumor effect in murine breast and pancreatic tumor models by enhancing recruitment and activation of immune cells in tumors for local and systemic antitumor effects. Moreover, intratumoral xenogeneic cell treatment turns immunologically "cold" tumors to "hot" ones, generates systemic antitumor immunity, and synergizes with chemotherapy. Thus, the intratumoral xenogeneic tissue-specific cell immunotherapy may represent a useful therapeutic option to difficult-to-treat cancers.
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Affiliation(s)
- Chi-Ping Huang
- Department of Medicine, Department of Urology, College of Medicine, China Medical University and Hospital, Taichung, 404, Taiwan
| | - Liang-Chih Liu
- Department of Medicine, Department of Surgery, College of Medicine, China Medical University and Hospital, Taichung, 404, Taiwan
| | - Chih-Chun Chang
- Sex Hormone Research Center, Department of Medical Laboratory Science and Biotechnology, China Medical University and Hospital, Taichung, 404, Taiwan
| | - Chun-Chie Wu
- Department of Medicine, Department of Urology, College of Medicine, China Medical University and Hospital, Taichung, 404, Taiwan
| | - Chih-Rong Shyr
- Sex Hormone Research Center, Department of Medical Laboratory Science and Biotechnology, China Medical University and Hospital, Taichung, 404, Taiwan.
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Cozzi E, Schneeberger S, Bellini MI, Berglund E, Böhmig G, Fowler K, Hoogduijn M, Jochmans I, Marckmann G, Marson L, Neuberger J, Oberbauer R, Pierson RN, Reichart B, Scobie L, White C, Naesens M. Organ transplants of the future: planning for innovations including xenotransplantation. Transpl Int 2021; 34:2006-2018. [PMID: 34459040 DOI: 10.1111/tri.14031] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/10/2021] [Accepted: 08/24/2021] [Indexed: 12/15/2022]
Abstract
The future clinical application of animal-to-human transplantation (xenotransplantation) is of importance to society as a whole. Favourable preclinical data relevant to cell, tissue and solid organ xenotransplants have been obtained from many animal models utilizing genetic engineering and protocols of pathogen-free husbandry. Findings have reached a tipping point, and xenotransplantation of solid organs is approaching clinical evaluation, the process of which now requires close deliberation. Such discussions include considering when there is sufficient evidence from preclinical animal studies to start first-in-human xenotransplantation trials. The present article is based on evidence and opinions formulated by members of the European Society for Organ Transplantation who are involved in the Transplantation Learning Journey project. The article includes a brief overview of preclinical concepts and biology of solid organ xenotransplantation, discusses the selection of candidates for first-in-human studies and considers requirements for study design and conduct. In addition, the paper emphasizes the need for a regulatory framework for xenotransplantation of solid organs and the essential requirement for input from public and patient stakeholders.
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Affiliation(s)
- Emanuele Cozzi
- Department of Cardiac, Thoracic and Vascular Sciences and Public Health, Transplant Immunology Unit, Padua University Hospital, Padua, Italy
| | - Stefan Schneeberger
- Department of Visceral, Transplant and Thoracic Surgery, Innsbruck Medical University, Innsbruck, Austria
| | - Maria Irene Bellini
- Department of Surgical Sciences, Sapienza University of Rome, Rome, Italy
- Department of Emergency Medicine and Surgery, Azienda Ospedaliera San Camillo Forlanini, Rome, Italy
| | - Erik Berglund
- Department of Clinical Science, Intervention and Technology (CLINTEC), Division of Transplantation Surgery, Karolinska Institute and ITB-MED, Stockholm, Sweden
| | - Georg Böhmig
- Division of Nephrology and Dialysis, Medical University Vienna, Vienna, Austria
| | - Kevin Fowler
- The Voice of the Patient, Inc., Chicago, IL, USA
| | - Martin Hoogduijn
- Department of Internal Medicine, Erasmus MC Transplant Institute, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Ina Jochmans
- Transplantation Research Group, Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
| | - Georg Marckmann
- Institute of Ethics, History and Theory of Medicine, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Lorna Marson
- The Edinburgh Transplant Centre, Royal Infirmary of Edinburgh, Edinburgh, UK
| | | | | | - Richard N Pierson
- Center for Transplantation Sciences, Department of Surgery, Massachusetts General Hospital, Boston, MA, USA
| | - Bruno Reichart
- Walter Brendel Center for Experimental Medicine, LMU Munich, Munich, Germany
| | - Linda Scobie
- Department of Biological and Biomedical Sciences, Glasgow Caledonian University, Glasgow, UK
| | | | - Maarten Naesens
- Department of Microbiology, Immunology and Transplantation, KU Leuven, Leuven, Belgium
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Meier RPH, Longchamp A, Mohiuddin M, Manuel O, Vrakas G, Maluf DG, Buhler LH, Muller YD, Pascual M. Recent progress and remaining hurdles toward clinical xenotransplantation. Xenotransplantation 2021; 28:e12681. [PMID: 33759229 DOI: 10.1111/xen.12681] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 02/12/2021] [Accepted: 02/21/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND Xenotransplantation has made tremendous progress over the last decade. METHODS We discuss kidney and heart xenotransplantation, which are nearing initial clinical trials. RESULTS Life sustaining genetically modified kidney xenografts can now last for approximately 500 days and orthotopic heart xenografts for 200 days in non-human primates. Anti-swine specific antibody screening, preemptive desensitization protocols, complement inhibition and targeted immunosuppression are currently being adapted to xenotransplantation with the hope to achieve better control of antibody-mediated rejection (AMR) and improve xenograft longevity. These newest advances could probably facilitate future clinical trials, a significant step for the medical community, given that dialysis remains difficult for many patients and can have prohibitive costs. Performing a successful pig-to-human clinical kidney xenograft, that could last for more than a year after transplant, seems feasible but it still has significant potential hurdles to overcome. The risk/benefit balance is progressively reaching an acceptable equilibrium for future human recipients, e.g. those with a life expectancy inferior to two years. The ultimate question at this stage would be to determine if a "proof of concept" in humans is desirable, or whether further experimental/pre-clinical advances are still needed to demonstrate longer xenograft survival in non-human primates. CONCLUSION In this review, we discuss the most recent advances in kidney and heart xenotransplantation, with a focus on the prevention and treatment of AMR and on the recipient's selection, two aspects that will likely be the major points of discussion in the first pig organ xenotransplantation clinical trials.
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Affiliation(s)
- Raphael P H Meier
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Alban Longchamp
- Department of Vascular Surgery, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Muhammad Mohiuddin
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Oriol Manuel
- Transplantation Center, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
| | - Georgios Vrakas
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Daniel G Maluf
- Department of Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Leo H Buhler
- Faculty of Science and Medicine, Section of Medicine, University of Fribourg, Fribourg, Switzerland
| | - Yannick D Muller
- Division of Immunology and Allergy, University Hospital of Lausanne, Lausanne, Switzerland
| | - Manuel Pascual
- Transplantation Center, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Lausanne, Switzerland
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14
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Lee EJ, Lee H, Park EM, Kang HJ, Kim SJ, Park CG. Immunoglobulin M and Immunoglobulin G Subclass Distribution of Anti-galactose-Alpha-1,3-Galactose and Anti-N-Glycolylneuraminic Acid Antibodies in Healthy Korean Adults. Transplant Proc 2021; 53:1762-1770. [PMID: 33581850 DOI: 10.1016/j.transproceed.2021.01.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 11/19/2020] [Accepted: 01/08/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND Human preformed antibodies (Abs), anti-galactose-alpha-1,3-galactose (Gal) and anti-N-glycolylneuraminic acid (Neu5Gc), can react with porcine antigens of wild-type pigs. To provide basic population data of the Abs for potential application in clinical xenotransplantation, we developed enzyme-linked immunosorbent assay methods and investigated the serum titers of anti-Gal and anti-Neu5Gc Abs, including immunoglobulin (Ig) M and IgG along with its subclasses, in humans. METHODS Anti-Gal and anti-Neu5Gc Abs serum titers were measured in 380 healthy Korean adults using the in-house enzyme-linked immunosorbent assays. The frequency and median values of anti-Gal and anti-Neu5Gc were measured, and their class and subclass distribution were evaluated. RESULTS The detection frequencies of anti-Gal were 99.2%, 95.0%, 23.2%, 94.5%, 12.4%, and 3.4% for IgM, IgG, IgG1, IgG2, IgG3, and IgG4, respectively. The detection frequencies of anti-Neu5Gc Abs were 87.4%, 96.6%, 1.6%, 46.3%, 0.0%, and 0.0% for IgM, IgG, IgG1, IgG2, IgG3, and IgG4, respectively. The median values of anti-Gal IgM (1001.6 ng/mL) and IgG (1198.3 ng/mL) were significantly higher than those of anti-Neu5Gc Abs (IgM, 328.4 ng/mL; IgG, 194.7 ng/mL; P < .001). IgG2 titers of both anti-Gal and anti-Neu5Gc Abs correlated better with the IgG class than the titers of other IgG subclasses. CONCLUSIONS The titers of anti-Gal Abs were higher than those of anti-Neu5Gc Abs. IgG2 was the main IgG subclass in both anti-Gal and anti-Neu5Gc Abs. Variation in the titers of anti-Gal or anti-Neu5Gc Abs may partly explain the biological and immunologic changes that occur in recipients of xenotransplants.
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Affiliation(s)
- Eun Jin Lee
- Department of Laboratory Medicine, Hallym University College of Medicine, Dongtan Sacred Heart Hospital, Hwaseong-si, Republic of Korea
| | - Haneulnari Lee
- Department of Laboratory Medicine, Hallym University College of Medicine, Hallym, University Sacred Heart Hospital, Anyang-si, Republic of Korea
| | - Eun Mi Park
- Department of Laboratory Medicine, Hallym University College of Medicine, Hallym, University Sacred Heart Hospital, Anyang-si, Republic of Korea
| | - Hee Jung Kang
- Department of Laboratory Medicine, Hallym University College of Medicine, Hallym, University Sacred Heart Hospital, Anyang-si, Republic of Korea.
| | - Sang Joon Kim
- Department of Surgery, Myongji Hospital, Goyang-si, Republic of Korea
| | - Chung-Gyu Park
- Xenotransplantation Research Center, Seoul National University College of Medicine, Seoul, Republic of Korea; Department of Microbiology and Immunology, Department of Biomedical Sciences, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea; Institute of Endemic Diseases, Seoul National University College of Medicine, Seoul, Republic of Korea
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15
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Khodayari H, Khodayari S, Khalighfard S, Tahmasebifar A, Tajaldini M, Poorkhani A, Nikoueinejad H, Hamidi GA, Nosrati H, Kalhori MR, Alizadeh AM. Gamma-radiated immunosuppressed tumor xenograft mice can be a new ideal model in cancer research. Sci Rep 2021; 11:256. [PMID: 33420261 PMCID: PMC7794493 DOI: 10.1038/s41598-020-80428-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 12/21/2020] [Indexed: 01/29/2023] Open
Abstract
Tumor xenograft models can create a high capacity to study human tumors and discover efficient therapeutic approaches. Here, we aimed to develop the gamma-radiated immunosuppressed (GIS) mice as a new kind of tumor xenograft model for biomedical studies. First, 144 mice were divided into the control and treated groups exposed by a medical Cobalt-60 apparatus in 3, 4, and 5 Gy based on the system outputs. Then, 144 BALB/c mice were divided into four groups; healthy, xenograft, radiation, and radiation + xenograft groups. The animals in the xenograft and radiation + xenograft groups have subcutaneously received 3 × 106 MCF-7 cells 24 h post-radiation. On 3, 7, 14, and 21 days after cell injection, the animals were sacrificed. Then, the blood samples and the spleen and tumor tissues were removed for the cellular and molecular analyses. The whole-body gamma radiation had a high immunosuppressive effect on the BALB/c mice from 1 to 21 days post-radiation. The macroscopic and histopathological observations have proved that the created clusters' tumor structure resulted in the xenograft breast tumor. There was a significant increase in tumor size after cell injection until the end of the study. Except for Treg, the spleen level of CD4, CD8, CD19, and Ly6G was significantly decreased in Xen + Rad compared to the Xen alone group on 3 and 7 days. Unlike IL-4 and IL-10, the spleen level of TGF-β, INF-γ, IL-12, and IL-17 was considerably decreased in the Xen + Rad than the Xen alone group on 3 and 7 days. The spleen expressions of the VEGF, Ki67, and Bax/Bcl-2 ratio were dramatically increased in the Xen + Rad group compared to the Xen alone on 3, 7, 14, and 21 days. Our results could confirm a new tumor xenograft model via an efficient immune-suppressive potential of the whole-body gamma radiation in mice.
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Affiliation(s)
- Hamid Khodayari
- Physiology Research Center, Kashan University of Medical Sciences, Kashan, Iran
- Radiation Oncology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeed Khodayari
- Radiation Oncology Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Cancer Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Solmaz Khalighfard
- Cancer Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Arash Tahmasebifar
- Ischemic Disorder Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Mahboubeh Tajaldini
- Ischemic Disorder Center, Golestan University of Medical Sciences, Gorgan, Iran
| | | | - Hassan Nikoueinejad
- Nephrology and Urology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Gholam Ali Hamidi
- Physiology Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - Hassan Nosrati
- Radiation Oncology Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Kalhori
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Ali Mohammad Alizadeh
- Cancer Research Center, Tehran University of Medical Sciences, Tehran, Iran.
- Breast Disease Research Center, Tehran University of Medical Sciences, Tehran, Iran.
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16
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Perisse IV, Fan Z, Singina GN, White KL, Polejaeva IA. Improvements in Gene Editing Technology Boost Its Applications in Livestock. Front Genet 2021; 11:614688. [PMID: 33603767 PMCID: PMC7885404 DOI: 10.3389/fgene.2020.614688] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 12/07/2020] [Indexed: 12/18/2022] Open
Abstract
Accelerated development of novel CRISPR/Cas9-based genome editing techniques provides a feasible approach to introduce a variety of precise modifications in the mammalian genome, including introduction of multiple edits simultaneously, efficient insertion of long DNA sequences into specific targeted loci as well as performing nucleotide transitions and transversions. Thus, the CRISPR/Cas9 tool has become the method of choice for introducing genome alterations in livestock species. The list of new CRISPR/Cas9-based genome editing tools is constantly expanding. Here, we discuss the methods developed to improve efficiency and specificity of gene editing tools as well as approaches that can be employed for gene regulation, base editing, and epigenetic modifications. Additionally, advantages and disadvantages of two primary methods used for the production of gene-edited farm animals: somatic cell nuclear transfer (SCNT or cloning) and zygote manipulations will be discussed. Furthermore, we will review agricultural and biomedical applications of gene editing technology.
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Affiliation(s)
- Iuri Viotti Perisse
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, United States
| | - Zhiqiang Fan
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, United States
| | - Galina N. Singina
- L.K. Ernst Federal Research Center for Animal Husbandry, Podolsk, Russia
| | - Kenneth L. White
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, United States
| | - Irina A. Polejaeva
- Department of Animal, Dairy and Veterinary Sciences, Utah State University, Logan, UT, United States
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17
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Huang CP, Yang CY, Shyr CR. Utilizing Xenogeneic Cells As a Therapeutic Agent for Treating Diseases. Cell Transplant 2021; 30:9636897211011995. [PMID: 33975464 PMCID: PMC8120531 DOI: 10.1177/09636897211011995] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/19/2021] [Accepted: 04/05/2021] [Indexed: 12/27/2022] Open
Abstract
The utilization of biologically produced cells to treat diseases is a revolutionary invention in modern medicine after chemically synthesized small molecule drugs and biochemically made protein drugs. Cells are basic units of life with diverse functions in mature and developing organs, which biological properties could be utilized as a promising therapeutic approach for currently intractable and incurable diseases. Xenogeneic cell therapy utilizing animal cells other than human for medicinal purpose has been studied as a new way of treating diseases. Xenogeneic cell therapy is considered as a potential regenerative approach to fulfill current unmet medical needs because xenogeneic cells could be isolated from different animal organs and expanded ex vivo as well as maintain the characteristics of original organs, providing a versatile and plenty cell source for cell-based therapeutics beside autologous and allogeneic sources. The swine species is considered the most suitable source because of the similarity with humans in size and physiology of many organs in addition to the economic and ethical reasons plus the possibility of genetic modification. This review discusses the old proposed uses of xenogeneic cells such as xenogeneic pancreatic islet cells, hepatocytes and neuronal cells as a living drug for the treatment of degenerative and organ failure diseases. Novel applications of xenogeneic mesenchymal stroma cells and urothelial cells are also discussed. There are formidable immunological barriers toward successful cellular xenotransplantation in clinic despite major progress in the development of novel immunosuppression regimens and genetically multimodified donor pigs. However, immunological barriers could be turn into immune boosters by using xenogeneic cells of specific tissue types as a novel immunotherapeutic agent to elicit bystander antitumor immunity due to rejection immune responses. Xenogeneic cells have the potential to become a safe and efficacious option for intractable diseases and hard-to-treat cancers, adding a new class of cellular medicine in our drug armamentarium.
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Affiliation(s)
- Chi-Ping Huang
- Department of Urology, School of Medicine, China Medical University and Hospital, Taichung, Taiwan
| | - Chi-Yu Yang
- Animal Technology Research Center/Division of Animal Technology, Agriculture Technology Research Institute, Miaoli, Taiwan
| | - Chih-Rong Shyr
- Sex Hormone Research Center, Department of Medical Laboratory Science and Biotechnology, China Medical University and Hospital, Taichung, Taiwan
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18
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Kantar RS, Berman ZP, Diep GK, Ramly EP, Alfonso AR, Sosin M, Lee ZH, Rifkin WJ, Kaoutzanis C, Yu JW, Ceradini DJ, Dagher NN, Levine JP. Hepatic Artery Microvascular Anastomosis in Liver Transplantation: A Systematic Review of the Literature. Ann Plast Surg 2021; 86:96-102. [PMID: 33315357 DOI: 10.1097/sap.0000000000002486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND The operating microscope is used in many centers for microvascular hepatic arterial reconstruction in living as well as deceased donor liver transplantation in adult and pediatric recipients. To date, a systematic review of the literature examining this topic is lacking. METHODS This systematic review of the literature was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. Three different electronic databases (PubMed, Embase OVID, and Cochrane CENTRAL) were queried. RESULTS A total of 34 studies were included. The rate of hepatic artery thrombosis (HAT) in noncomparative studies (28) ranged from 0% to 10%, with 8 studies reporting patient deaths resulting from HAT. Within comparative studies, the rate of HAT in patients who underwent arterial reconstruction using the operating microscope ranged from 0% to 5.3%, whereas the rate of HAT in patients who underwent arterial reconstruction using loupe magnification ranged from 0% up to 28.6%, and 2 studies reported patient deaths resulting from HAT. Two comparative studies did not find statistically significant differences between the 2 groups. CONCLUSIONS Our comprehensive systematic review of the literature seems to suggest that overall, rates of HAT may be lower when the operating microscope is used for hepatic arterial reconstruction in liver transplantation. However, matched comparisons are lacking and surgical teams need to be mindful of the learning curve associated with the use of the operating microscope as compared with loupe magnification, as well as the logistical and time constraints associated with setup of the operating microscope.
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Affiliation(s)
- Rami S Kantar
- From the Hansjörg Wyss Department of Plastic Surgery
| | - Zoe P Berman
- From the Hansjörg Wyss Department of Plastic Surgery
| | | | - Elie P Ramly
- From the Hansjörg Wyss Department of Plastic Surgery
| | | | - Michael Sosin
- From the Hansjörg Wyss Department of Plastic Surgery
| | - Z-Hye Lee
- From the Hansjörg Wyss Department of Plastic Surgery
| | | | | | - Jason W Yu
- From the Hansjörg Wyss Department of Plastic Surgery
| | | | - Nabil N Dagher
- Transplant Institute, New York University Langone Health, New York, NY
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19
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Liu R, Oldham RJ, Teal E, Beers SA, Cragg MS. Fc-Engineering for Modulated Effector Functions-Improving Antibodies for Cancer Treatment. Antibodies (Basel) 2020; 9:E64. [PMID: 33212886 PMCID: PMC7709126 DOI: 10.3390/antib9040064] [Citation(s) in RCA: 92] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 09/28/2020] [Accepted: 11/04/2020] [Indexed: 12/30/2022] Open
Abstract
The majority of monoclonal antibody (mAb) therapeutics possess the ability to engage innate immune effectors through interactions mediated by their fragment crystallizable (Fc) domain. By delivering Fc-Fc gamma receptor (FcγR) and Fc-C1q interactions, mAb are able to link exquisite specificity to powerful cellular and complement-mediated effector functions. Fc interactions can also facilitate enhanced target clustering to evoke potent receptor signaling. These observations have driven decades-long research to delineate the properties within the Fc that elicit these various activities, identifying key amino acid residues and elucidating the important role of glycosylation. They have also fostered a growing interest in Fc-engineering whereby this knowledge is exploited to modulate Fc effector function to suit specific mechanisms of action and therapeutic purposes. In this review, we document the insight that has been generated through the study of the Fc domain; revealing the underpinning structure-function relationships and how the Fc has been engineered to produce an increasing number of antibodies that are appearing in the clinic with augmented abilities to treat cancer.
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Affiliation(s)
- Rena Liu
- GlaxoSmithKline Research and Development, Stevenage SG1 2NY, UK;
| | - Robert J. Oldham
- Antibody and Vaccine Group, Centre for Cancer Immunology, Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton SO171BJ, UK; (R.J.O.); (E.T.); (M.S.C.)
- Cancer Research UK Centre, Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton SO171BJ, UK
| | - Emma Teal
- Antibody and Vaccine Group, Centre for Cancer Immunology, Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton SO171BJ, UK; (R.J.O.); (E.T.); (M.S.C.)
- Cancer Research UK Centre, Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton SO171BJ, UK
| | - Stephen A. Beers
- Antibody and Vaccine Group, Centre for Cancer Immunology, Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton SO171BJ, UK; (R.J.O.); (E.T.); (M.S.C.)
- Cancer Research UK Centre, Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton SO171BJ, UK
| | - Mark S. Cragg
- Antibody and Vaccine Group, Centre for Cancer Immunology, Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton SO171BJ, UK; (R.J.O.); (E.T.); (M.S.C.)
- Cancer Research UK Centre, Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton SO171BJ, UK
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20
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Bailey J, Balls M. Clinical impact of high-profile animal-based research reported in the UK national press. BMJ OPEN SCIENCE 2020; 4:e100039. [PMID: 35047685 PMCID: PMC8647573 DOI: 10.1136/bmjos-2019-100039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 07/21/2020] [Accepted: 08/17/2020] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVES We evaluated animal-based biomedical 'breakthroughs' reported in the UK national press in 1995 (25 years prior to the conclusion of this study). Based on evidence of overspeculative reporting of biomedical research in other areas (eg, press releases and scientific papers), we specifically examined animal research in the media, asking, 'In a given year, what proportion of animal research "breakthroughs"' published in the UK national press had translated, more than 20 years later, to approved interventions?' METHODS We searched the Nexis media database (LexisNexis.com) for animal-based biomedical reports in the UK national press. The only restrictions were that the intervention should be specific, such as a named drug, gene, biomedical pathway, to facilitate follow-up, and that there should be claims of some clinical promise. MAIN OUTCOME MEASURES Were any interventions approved for human use? If so, when and by which agency? If not, why, and how far did development proceed? Were any other, directly related interventions approved? Did any of the reports overstate human relevance? RESULTS Overspeculation and exaggeration of human relevance was evident in all the articles examined. Of 27 unique published 'breakthroughs', only one had clearly resulted in human benefit. Twenty were classified as failures, three were inconclusive and three were partially successful. CONCLUSIONS The results of animal-based preclinical research studies are commonly overstated in media reports, to prematurely imply often-imminent 'breakthroughs' relevant to human medicine.
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Affiliation(s)
| | - Michael Balls
- University of Nottingham Faculty of Medicine and Health Sciences, Nottingham, UK
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21
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Organ donation in the US and Europe: The supply vs demand imbalance. Transplant Rev (Orlando) 2020; 35:100585. [PMID: 33071161 DOI: 10.1016/j.trre.2020.100585] [Citation(s) in RCA: 102] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 10/06/2020] [Accepted: 10/09/2020] [Indexed: 02/07/2023]
Abstract
Organ donation and transplantation remain the best and most cost-effective clinical solution for end-stage organ failure. Several agencies across the US and Europe provide legislative, regulatory, and humanitarian services to generate smoother applications in all transplantation processes and donor-recipient relationships. US and European statistics present nine types of grafts, with kidneys being the most transplanted organ worldwide. However, organ shortage, religion, underrepresented minority groups, difficulties in obtaining consent, lack of understanding, and general ethical concerns present challenging barriers to organ donation, reflecting the complexity of graft procurement and allocation. Breaking down these barriers to reduce the organ-supply imbalance requires an appropriate multifaceted approach. Some of the key areas include increasing the potential donor pool and consent rates, apt organ allocation, and improving organ health. Additionally, suitable policies and standardized guidelines for both donors and recipients, alongside educational initiatives, are needed to ensure patient safety and global awareness. Looking forward, novel and effective research plans and initiatives are needed if we are to avoid a colossal supply-demand gap.
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22
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Lee HK, Ha DI, Kang JG, Park GW, Lee JY, Cho K, Bin Moon S, Shin JH, Kim YS, An HJ, Kim JY, Yoo JS, Ko JH. Selective Identification of α-Galactosyl Epitopes in N-Glycoproteins Using Characteristic Fragment Ions from Higher-Energy Collisional Dissociation. Anal Chem 2020; 92:13144-13154. [PMID: 32902264 DOI: 10.1021/acs.analchem.0c02276] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The α-galactosyl epitope is a terminal N-glycan moiety of glycoproteins found in mammals except in humans, and thus, it is recognized as an antigen that provokes an immunogenic response in humans. Accordingly, it is necessary to analyze the α-galactosyl structure in biopharmaceuticals or organ transplants. Due to an identical glycan composition and molecular mass between α-galactosyl N-glycans and hybrid/high-mannose-type N-glycans, it is challenging to characterize α-galactosyl epitopes in N-glycoproteins using mass spectrometry. Here, we describe a method to identify α-galactosyl N-glycopeptides in mice glycoproteins using liquid chromatography with tandem mass spectrometry with higher-energy collisional dissociation (HCD). The first measure was an absence of [YHM] ion peaks in the HCD spectra, which was exclusively observed in hybrid and/or high-mannose-type N-glycopeptides. The second complementary criterion was the ratio of an m/z 528.19 (Hex2HexNAc1) ion to m/z 366.14 (Hex1HexNAc1) ion (Im/z528/Im/z366). The measure of [Im/z528/Im/z366 > 0.3] enabled a clear-cut determination of α-galactosyl N-glycopeptides with high accuracy. In Ggta1 knockout mice, we could not find any α-galactosyl N-glycoproteins identified in WT mice plasma. Using this method, we could screen for α-galactosyl N-glycoproteins from mice spleen, lungs, and plasma samples in a highly sensitive and specific manner. Conclusively, we suggest that this method will provide a robust analytical tool for determination of α-galactosyl epitopes in pharmaceuticals and complex biological samples.
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Affiliation(s)
- Hyun Kyoung Lee
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute, Ochang-eup, Cheongju 28119, Republic of Korea.,Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Dae-In Ha
- Genome Editing Research Center, KRIBB, 125 Gwahak-ro, Daejeon 34141, Republic of Korea.,Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (UST), 217 Gajeong-ro, Daejeon 34113, Republic of Korea
| | - Jeong Gu Kang
- Genome Editing Research Center, KRIBB, 125 Gwahak-ro, Daejeon 34141, Republic of Korea
| | - Gun Wook Park
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute, Ochang-eup, Cheongju 28119, Republic of Korea
| | - Ju Yeon Lee
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute, Ochang-eup, Cheongju 28119, Republic of Korea
| | - Kun Cho
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute, Ochang-eup, Cheongju 28119, Republic of Korea
| | - Su Bin Moon
- Genome Editing Research Center, KRIBB, 125 Gwahak-ro, Daejeon 34141, Republic of Korea.,Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (UST), 217 Gajeong-ro, Daejeon 34113, Republic of Korea
| | - Jong Hwan Shin
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute, Ochang-eup, Cheongju 28119, Republic of Korea.,Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Yong-Sam Kim
- Genome Editing Research Center, KRIBB, 125 Gwahak-ro, Daejeon 34141, Republic of Korea.,Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (UST), 217 Gajeong-ro, Daejeon 34113, Republic of Korea
| | - Hyun Joo An
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute, Ochang-eup, Cheongju 28119, Republic of Korea.,Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Jin Young Kim
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute, Ochang-eup, Cheongju 28119, Republic of Korea
| | - Jong Shin Yoo
- Research Center of Bioconvergence Analysis, Korea Basic Science Institute, Ochang-eup, Cheongju 28119, Republic of Korea.,Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Jeong-Heon Ko
- Genome Editing Research Center, KRIBB, 125 Gwahak-ro, Daejeon 34141, Republic of Korea.,Department of Biomolecular Science, KRIBB School of Bioscience, Korea University of Science and Technology (UST), 217 Gajeong-ro, Daejeon 34113, Republic of Korea
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The resurgent landscape of xenotransplantation of pig organs in nonhuman primates. SCIENCE CHINA-LIFE SCIENCES 2020; 64:697-708. [PMID: 32975720 DOI: 10.1007/s11427-019-1806-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 08/27/2020] [Indexed: 12/14/2022]
Abstract
Organ shortage is a major bottleneck in allotransplantation and causes many wait-listed patients to die or become too sick for transplantation. Genetically engineered pigs have been discussed as a potential alternative to allogeneic donor organs. Although xenotransplantation of pig-derived organs in nonhuman primates (NHPs) has shown sequential advances in recent years, there are still underlying problems that need to be completely addressed before clinical applications, including (i) acute humoral xenograft rejection; (ii) acute cellular rejection; (iii) dysregulation of coagulation and inflammation; (iv) physiological incompatibility; and (v) cross-species infection. Moreover, various genetic modifications to the pig donor need to be fully characterized, with the aim of identifying the ideal transgene combination for upcoming clinical trials. In addition, suitable pretransplant screening methods need to be confirmed for optimal donor-recipient matching, ensuring a good outcome from xenotransplantation. Herein, we summarize the understanding of organ xenotransplantation in pigs-to-NHPs and highlight the current status and recent progress in extending the survival time of pig xenografts and recipients. We also discuss practical strategies for overcoming the obstacles to xenotransplantation mentioned above to further advance transplantation of pig organs in the clinic.
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Tanihara F, Hirata M, Nguyen NT, Sawamoto O, Kikuchi T, Doi M, Otoi T. Efficient generation of GGTA1-deficient pigs by electroporation of the CRISPR/Cas9 system into in vitro-fertilized zygotes. BMC Biotechnol 2020; 20:40. [PMID: 32811500 PMCID: PMC7436961 DOI: 10.1186/s12896-020-00638-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 08/10/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Xenoantigens are a major source of concern with regard to the success of interspecific xenografts. GGTA1 encodes α1,3-galactosyltransferase, which is essential for the biosynthesis of galactosyl-alpha 1,3-galactose, the major xenoantigen causing hyperacute rejection. GGTA1-modified pigs, therefore, are promising donors for pig-to-human xenotransplantation. In this study, we developed a method for the introduction of the CRISPR/Cas9 system into in vitro-fertilized porcine zygotes via electroporation to generate GGTA1-modified pigs. RESULTS We designed five guide RNAs (gRNAs) targeting distinct sites in GGTA1. After the introduction of the Cas9 protein with each gRNA via electroporation, the gene editing efficiency in blastocysts developed from zygotes was evaluated. The gRNA with the highest gene editing efficiency was used to generate GGTA1-edited pigs. Six piglets were delivered from two recipient gilts after the transfer of electroporated zygotes with the Cas9/gRNA complex. Deep sequencing analysis revealed that five out of six piglets carried a biallelic mutation in the targeted region of GGTA1, with no off-target events. Furthermore, staining with isolectin B4 confirmed deficient GGTA1 function in GGTA1 biallelic mutant piglets. CONCLUSIONS We established GGTA1-modified pigs with high efficiency by introducing a CRISPR/Cas9 system into zygotes via electroporation. Multiple gene modifications, including knock-ins of human genes, in porcine zygotes via electroporation may further improve the application of the technique in pig-to-human xenotransplantation.
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Affiliation(s)
- Fuminori Tanihara
- Laboratory of Animal Reproduction, Faculty of Bioscience and Bioindustry, Tokushima University, 2272-1 Ishii, Myozai-gun, Tokushima, 779-3233, Japan
| | - Maki Hirata
- Laboratory of Animal Reproduction, Faculty of Bioscience and Bioindustry, Tokushima University, 2272-1 Ishii, Myozai-gun, Tokushima, 779-3233, Japan.
| | - Nhien Thi Nguyen
- Laboratory of Animal Reproduction, Faculty of Bioscience and Bioindustry, Tokushima University, 2272-1 Ishii, Myozai-gun, Tokushima, 779-3233, Japan
| | - Osamu Sawamoto
- Research and Development Center, Otsuka Pharmaceutical Factory, Inc., 115 Muya-cho, Naruto, Tokushima, 772-8601, Japan
| | - Takeshi Kikuchi
- Research and Development Center, Otsuka Pharmaceutical Factory, Inc., 115 Muya-cho, Naruto, Tokushima, 772-8601, Japan
| | - Masako Doi
- Research and Development Center, Otsuka Pharmaceutical Factory, Inc., 115 Muya-cho, Naruto, Tokushima, 772-8601, Japan
| | - Takeshige Otoi
- Laboratory of Animal Reproduction, Faculty of Bioscience and Bioindustry, Tokushima University, 2272-1 Ishii, Myozai-gun, Tokushima, 779-3233, Japan
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25
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Knoll MF, Cooper DKC, Bottino R. How the COVID-19 pandemic may impact public support for clinical xenotransplantation in the United States? Xenotransplantation 2020; 27:e12623. [PMID: 32596829 PMCID: PMC7361153 DOI: 10.1111/xen.12623] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 06/06/2020] [Indexed: 12/11/2022]
Abstract
Many patients who would undergo organ transplantation cannot proceed due to the inability of human organ donation to satisfy medical needs. Xenotransplantation has the potential to offer unlimited availability of pig organs for transplantation, and pig-to-non-human primate models have demonstrated outcomes that may soon justify clinical trials. However, one of the unique ethical challenges faced by xenotransplantation is that the risk of introducing potential zoonotic disease into the community must be weighed along with the benefit to the patient. While most experts believe that zoonosis is manageable, apprehension over disease transmission from animal donors to human recipients remains a frequent concern of many who are undecided or opposed to clinical xenotransplantation. The COVID-19 pandemic represents a scenario (rapid worldwide spread of a highly contagious novel zoonotic disease with no natural defense in humans) that would seem to justify apprehension, especially in the United States, which has largely avoided previous pandemic outbreaks. However, there are many differences between zoonosis found in the wild or after xenotransplantation that favor the safety of the latter. Still, these differences, as well as the benefits of xenotransplantation, are not widely understood outside of the field. We must therefore ask what impact the COVID-19 pandemic will have on attitudes toward xenotransplantation.
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Affiliation(s)
- Michael F Knoll
- Institute of Cellular Therapeutics, Allegheny Health Network, Pittsburgh, PA, USA
| | - David K C Cooper
- Department of Surgery, Xenotransplantation Program, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Rita Bottino
- Institute of Cellular Therapeutics, Allegheny Health Network, Pittsburgh, PA, USA.,Department of Biological Sciences, Carnegie Mellon University, Pittsburgh, PA, USA
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Amniotic and Umbilical Cord of Transgenic Pigs as an Alternative Source of Stem Cells. Transplant Proc 2020; 52:2193-2197. [PMID: 32505501 DOI: 10.1016/j.transproceed.2020.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 02/24/2020] [Accepted: 03/12/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND The placenta is worthy of consideration as a source of tissues for transplantation. Porcine material preparation allows significantly more grafts to be obtained than human material. Amniotic cells are a very practicable stem cell type and easy to obtain with great potential, compared with, for instance, adipose-derived stem cells. The aim of this paper was to verify if porcine transgenic amnion and umbilical cord could be as effective for xenotransplantation of stem cells as human material. METHODS Oxytocin was administered to the sows on the day the material was obtained. The obtained material was divided by weight into 4 relatively equal parts, which were transferred into 1 of 4 containers. The containers had different transport media and a concentration of antibiotics. After cell isolation by homogenization, the number of live, dead, and apoptotic cells was assessed. RESULTS Maintaining the sterility when obtaining material from breeding pigs was the biggest problem. Transport medium, despite the addition of antibiotics, was in most cases infected. Tests revealed that porcine cells have a tendency to leave tissue material and adhere to plastic as human cells do. Porcine cells are also fibroblast like, which can suggest that these cells might be tested for the presence of mesenchymal stem cells. However, some differences are visible in all parameters, which can result from contamination of material or improper transport medium. There were significant differences between viability and apoptotic cell number in human and transgenic pig cells isolated from both sources---amniotic membrane and umbilical cord.
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Requirements for Proper Immunosuppressive Regimens to Limit Translational Failure of Cardiac Cell Therapy in Preclinical Large Animal Models. J Cardiovasc Transl Res 2020; 14:88-99. [PMID: 32476086 PMCID: PMC7892682 DOI: 10.1007/s12265-020-10035-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 05/19/2020] [Indexed: 12/16/2022]
Abstract
Various cell-based therapies are currently investigated in an attempt to tackle the high morbidity and mortality associated with heart failure. The need for these therapies to move towards the clinic is pressing. Therefore, preclinical large animal studies that use non-autologous cells are needed to evaluate their potential. However, non-autologous cells are highly immunogenic and trigger immune rejection responses resulting in potential loss of efficacy. To overcome this issue, adequate immunosuppressive regimens are of imminent importance but clear guidelines are currently lacking. In this review, we assess the immunological barriers regarding non-autologous cell transplantation and immune modulation with immunosuppressive drugs. In addition, we provide recommendations with respect to immunosuppressive regimens in preclinical cardiac cell-replacement studies.
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Abstract
PURPOSE OF REVIEW To review the impact of a new technology, 3D-bioprinting, in xenotransplantation research. RECENT FINDINGS Genetically engineered pigs, beginning with human (h) CD55-transgenic and Gal-knockout pigs, have improved the outcomes of xenotransplantation research. Today, there are more than 30 different genetically engineered pigs either expressing human gene(s) or lacking pig gene(s). CRIPSR/cas9 technology has facilitated the production of multigene pigs (up to nine genes in a single pig), which lack multiple pig xenoantigens, and express human transgenes, such as hCD46, hCD55, hThrombomodulin, hCD39, etc. Although recent studies in nonhuman primates (NHPs) have demonstrated prolonged survival after life-supporting pig kidney, heart, and islet xenotransplantation, researchers have difficulty determining the best genetic combination to test in NHPs because of a potential greater than 100 000 genetic combinations. 3D-bioprinting of genetically engineered pig cells: is superior to 2D in-vitro testing, enables organ-specific testing, helps to understand differences in immunogenicity between organs, and is faster and cheaper than testing in NHPs. Moreover, 3D-bioprinted cells can be continuously perfused in a bioreactor, controlling for all variables, except the studied variable. SUMMARY 3D-bioprinting can help in the study of the impact of specific genes (human or pig) in xenotransplantation in a rapid, inexpensive, and reliable way.
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Grebenik EA, Gafarova ER, Istranov LP, Istranova EV, Ma X, Xu J, Guo W, Atala A, Timashev PS. Mammalian Pericardium-Based Bioprosthetic Materials in Xenotransplantation and Tissue Engineering. Biotechnol J 2020; 15:e1900334. [PMID: 32077589 DOI: 10.1002/biot.201900334] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 01/29/2020] [Indexed: 12/13/2022]
Abstract
Bioprosthetic materials based on mammalian pericardium tissue are the gold standard in reconstructive surgery. Their application range covers repair of rectovaginal septum defects, abdominoplastics, urethroplasty, duraplastics, maxillofacial, ophthalmic, thoracic and cardiovascular reconstruction, etc. However, a number of factors contribute to the success of their integration into the host tissue including structural organization, mechanical strength, biocompatibility, immunogenicity, surface chemistry, and biodegradability. In order to improve the material's properties, various strategies are developed, such as decellularization, crosslinking, and detoxification. In this review, the existing issues and long-term achievements in the development of bioprosthetic materials based on the mammalian pericardium tissue, aimed at a wide-spectrum application in reconstructive surgery are analyzed. The basic technical approaches to preparation of biocompatible forms providing continuous functioning, optimization of biomechanical and functional properties, and clinical applicability are described.
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Affiliation(s)
- Ekaterina A Grebenik
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, 119991, Russia
| | - Elvira R Gafarova
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, 119991, Russia
| | - Leonid P Istranov
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, 119991, Russia
| | - Elena V Istranova
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, 119991, Russia
| | - Xiaowei Ma
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing, 100190, P. R. China
| | - Jing Xu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing, 100190, P. R. China
| | - Weisheng Guo
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing, 100190, P. R. China
| | - Anthony Atala
- Wake Forest Institute for Regenerative Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, 27101, USA
| | - Peter S Timashev
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, 119991, Russia.,Institute of Photonic Technologies, Research center "Crystallography and Photonics" RAS, Moscow, 142190, Russia.,N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, 119991, Russia
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Rock Inhibitor Y-27632 Enables Feeder-Free, Unlimited Expansion of Sus scrofa domesticus Swine Airway Stem Cells to Facilitate Respiratory Research. Stem Cells Int 2019; 2019:3010656. [PMID: 31871466 PMCID: PMC6906834 DOI: 10.1155/2019/3010656] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 10/29/2019] [Indexed: 12/21/2022] Open
Abstract
Current limitations in the efficacy of treatments for chronic respiratory disorders position them as prospective regenerative medicine therapeutic targets. A substantial barrier to these ambitions is that research requires large numbers of cells whose acquisition is hindered by the limited availability of human tissue samples leading to an overreliance on physiologically dissimilar rodents. The development of cell culture strategies for airway cells from large mammals will more effectively support the transition from basic research to clinical therapy. Using readily available porcine lungs, we isolated conducting airway tissue and subsequently a large number of porcine airway epithelial cells (pAECs) using a digestion and mechanical scraping technique. Cells were cultured in a variety of culture media formulations, both foetal bovine serum-containing and serum-free media, in air (21%) and physiological (2%) oxygen tension and in the presence and absence of Rho kinase inhibitor Y-27362 (RI). Cell number at isolation and subsequent population doublings were determined; cells were characterised during culture and following differentiation by immunofluorescence, histology, and IL-8 ELISA. Cells were positive for epithelial markers (pan-cytokeratin and E-cadherin) and negative for fibroblastic markers (vimentin and smooth muscle actin). Supplementation of cultures with Y-27632 allowed for unlimited expansion whilst sustaining an epithelial phenotype. Early passage pAECs readily produced differentiated air-liquid interface (ALI) cultures with a capacity for mucociliary differentiation retained after substantial expansion, strongly modulated by the culture condition applied. Primary pAECs will be a useful tool to further respiratory-oriented research whilst RI-expanded pAECs are a promising tool, particularly with further optimisation of culture conditions.
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Facial Transplantation for an Irreparable Central and Lower Face Injury: A Modernized Approach to a Classic Challenge. Plast Reconstr Surg 2019; 144:264e-283e. [PMID: 31348362 DOI: 10.1097/prs.0000000000005885] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Facial transplantation introduced a paradigm shift in the reconstruction of extensive facial defects. Although the feasibility of the procedure is well established, new challenges face the field in its second decade. METHODS The authors' team has successfully treated patients with extensive thermal and ballistic facial injuries with allotransplantation. The authors further validate facial transplantation as a reconstructive solution for irreparable facial injuries. Following informed consent and institutional review board approval, a partial face and double jaw transplantation was performed in a 25-year-old man who sustained ballistic facial trauma. Extensive team preparations, thorough patient evaluation, preoperative diagnostic imaging, three-dimensional printing technology, intraoperative surgical navigation, and the use of dual induction immunosuppression contributed to the success of the procedure. RESULTS The procedure was performed on January 5 and 6, 2018, and lasted nearly 25 hours. The patient underwent hyoid and genioglossus advancement for floor-of-mouth dehiscence, and palate wound dehiscence repair on postoperative day 11. Open reduction and internal fixation of left mandibular nonunion were performed on postoperative day 108. Nearly 1 year postoperatively, the patient demonstrates excellent aesthetic outcomes, intelligible speech, and is tolerating an oral diet. He remains free from acute rejection. CONCLUSIONS The authors validate facial transplantation as the modern answer to the classic reconstructive challenge imposed by extensive facial defects resulting from ballistic injury. Relying on a multidisciplinary collaborative approach, coupled with innovative emerging technologies and immunosuppression protocols, can overcome significant challenges in facial transplantation and reinforce its position as the highest rung on the reconstructive ladder. CLINICAL QUESTION/LEVEL OF EVIDENCE Therapeutic, V.
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Platt JL, Cascalho M, Piedrahita JA. Xenotransplantation: Progress Along Paths Uncertain from Models to Application. ILAR J 2019; 59:286-308. [PMID: 30541147 DOI: 10.1093/ilar/ily015] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 08/23/2018] [Indexed: 12/18/2022] Open
Abstract
For more than a century, transplantation of tissues and organs from animals into man, xenotransplantation, has been viewed as a potential way to treat disease. Ironically, interest in xenotransplantation was fueled especially by successful application of allotransplantation, that is, transplantation of human tissue and organs, as a treatment for a variety of diseases, especially organ failure because scarcity of human tissues limited allotransplantation to a fraction of those who could benefit. In principle, use of animals such as pigs as a source of transplants would allow transplantation to exert a vastly greater impact than allotransplantation on medicine and public health. However, biological barriers to xenotransplantation, including immunity of the recipient, incompatibility of biological systems, and transmission of novel infectious agents, are believed to exceed the barriers to allotransplantation and presently to hinder clinical applications. One way potentially to address the barriers to xenotransplantation is by genetic engineering animal sources. The last 2 decades have brought progressive advances in approaches that can be applied to genetic modification of large animals. Application of these approaches to genetic engineering of pigs has contributed to dramatic improvement in the outcome of experimental xenografts in nonhuman primates and have encouraged the development of a new type of xenograft, a reverse xenograft, in which human stem cells are introduced into pigs under conditions that support differentiation and expansion into functional tissues and potentially organs. These advances make it appropriate to consider the potential limitation of genetic engineering and of current models for advancing the clinical applications of xenotransplantation and reverse xenotransplantation.
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Affiliation(s)
- Jeffrey L Platt
- Surgery, Microbiology & Immunology, and Transplantation Biology, University of Michigan, Ann Arbor, Michigan
| | - Marilia Cascalho
- Surgery, Microbiology & Immunology, and Transplantation Biology, University of Michigan, Ann Arbor, Michigan
| | - Jorge A Piedrahita
- Translational Medicine and The Comparative Medicine Institute, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
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Samy KP, Gao Q, Davis RP, Song M, Fitch ZW, Mulvihill MS, MacDonald AL, Leopardi FV, How T, Williams KD, Devi GR, Collins BH, Luo X, Kirk AD. The role of human CD46 in early xenoislet engraftment in a dual transplant model. Xenotransplantation 2019; 26:e12540. [PMID: 31219218 PMCID: PMC6908747 DOI: 10.1111/xen.12540] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 05/26/2019] [Accepted: 05/29/2019] [Indexed: 12/22/2022]
Abstract
BACKGROUND Membrane cofactor protein CD46 attenuates the complement cascade by facilitating cleavage of C3b and C4b. In solid organ xenotransplantation, organs expressing CD46 have been shown to resist hyperacute rejection. However, the incremental value of human CD46 expression for islet xenotransplantation remains poorly defined. METHODS This study attempted to delineate the role of CD46 in early neonatal porcine islet engraftment by comparing Gal-knocked out (GKO) and hCD46-transgenic (GKO/CD46) islets in a dual transplant model. Seven rhesus macaques underwent dual transplant and were sacrificed at 1 hour (n = 4) or 24 hours (n = 3). Both hemilivers were recovered and fixed for immunohistochemistry (CD46, insulin, neutrophil elastase, platelet, IgM, IgG, C3d, C4d, CD68, Caspase 3). Quantitative immunohistochemical analysis was performed using the Aperio Imagescope. RESULTS Within 1 hour of intraportal infusion of xenografts, no differences were observed between the two types of islets in terms of platelet, antibody, or complement deposition. Cellular infiltration and islet apoptotic activity were also similar at 1 hour. At 24 hours, GKO/CD46 islets demonstrated significantly less platelet deposition (P = 0.01) and neutrophil infiltration (P = 0.01) compared to GKO islets. In contrast, C3d (P = 0.38) and C4d (P = 0.45) deposition was equal between the two genotypes. CONCLUSIONS Our findings suggest that expression of hCD46 on NPIs potentially provides a measurable incremental survival advantage in vivo by reducing early thrombo-inflammatory events associated with instant blood-mediated inflammatory reaction (IBMIR) following intraportal islet infusion.
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Affiliation(s)
- Kannan P Samy
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina
| | - Qimeng Gao
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina
| | - Robert Patrick Davis
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina
| | - Mingqing Song
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina
| | - Zachary W Fitch
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina
| | - Michael S Mulvihill
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina
| | - Andrea L MacDonald
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina
| | - Frank V Leopardi
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina
| | - Tam How
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina
| | - Kyha D Williams
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina
| | - Gayathri R Devi
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina
| | - Bradley H Collins
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina
| | - Xunrong Luo
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina
| | - Allan D Kirk
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina
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de Graeff N, Jongsma KR, Johnston J, Hartley S, Bredenoord AL. The ethics of genome editing in non-human animals: a systematic review of reasons reported in the academic literature. Philos Trans R Soc Lond B Biol Sci 2019; 374:20180106. [PMID: 30905297 PMCID: PMC6452271 DOI: 10.1098/rstb.2018.0106] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/10/2018] [Indexed: 12/16/2022] Open
Abstract
In recent years, new genome editing technologies have emerged that can edit the genome of non-human animals with progressively increasing efficiency. Despite ongoing academic debate about the ethical implications of these technologies, no comprehensive overview of this debate exists. To address this gap in the literature, we conducted a systematic review of the reasons reported in the academic literature for and against the development and use of genome editing technologies in animals. Most included articles were written by academics from the biomedical or animal sciences. The reported reasons related to seven themes: human health, efficiency, risks and uncertainty, animal welfare, animal dignity, environmental considerations and public acceptability. Our findings illuminate several key considerations about the academic debate, including a low disciplinary diversity in the contributing academics, a scarcity of systematic comparisons of potential consequences of using these technologies, an underrepresentation of animal interests, and a disjunction between the public and academic debate on this topic. As such, this article can be considered a call for a broad range of academics to get increasingly involved in the discussion about genome editing, to incorporate animal interests and systematic comparisons, and to further discuss the aims and methods of public involvement. This article is part of a discussion meeting issue 'The ecology and evolution of prokaryotic CRISPR-Cas adaptive immune systems'.
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Affiliation(s)
- Nienke de Graeff
- Department of Medical Humanities, Julius Center, University Medical Center Utrecht/Utrecht University, PO Box 85500, Utrecht, GA 3508, The Netherlands
| | - Karin R. Jongsma
- Department of Medical Humanities, Julius Center, University Medical Center Utrecht/Utrecht University, PO Box 85500, Utrecht, GA 3508, The Netherlands
| | - Josephine Johnston
- Research Department, The Hastings Center, 21 Malcolm Gordon Road, Garrison, NY 10524, USA
| | - Sarah Hartley
- The University of Exeter Business School, University of Exeter, Rennes Drive, Exeter EX4 4PU, UK
| | - Annelien L. Bredenoord
- Department of Medical Humanities, Julius Center, University Medical Center Utrecht/Utrecht University, PO Box 85500, Utrecht, GA 3508, The Netherlands
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Lo PC, Maeda A, Kodama T, Takakura C, Yoneyama T, Sakai R, Noguchi Y, Matsuura R, Eguchi H, Matsunami K, Okuyama H, Miyagawa S. The novel immunosuppressant prenylated quinolinecarboxylic acid-18 (PQA-18) suppresses macrophage differentiation and cytotoxicity in xenotransplantation. Immunobiology 2019; 224:575-584. [PMID: 30967296 DOI: 10.1016/j.imbio.2019.04.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 03/28/2019] [Accepted: 04/01/2019] [Indexed: 12/12/2022]
Abstract
Innate immunity plays a major role in xenograft rejection. However, the majority of immunosuppressants focus on inhibiting acquired immunity and not innate immunity. Therefore, a novel immunosuppressant suitable for use in conjunction with xenografts continues to be needed. It has been reported that prenylated quinolinecarboxylic acid-18 (PQA-18), a p21-activated kinase 2 (PAK2) inhibitor, exerts an immunosuppressive function on T cells. Hence, the possibility exists that PQA-18 might be used in conjunction with xenografts, which prompted us to investigate the efficacy of PQA-18 on macrophages compared with Tofacitinib, a janus kinase (JAK) inhibitor. Initial experiments confirmed that PQA-18 is non-toxic to swine endothelial cells (SECs) and human monocytes. Both PQA-18 and Tofacitinib suppressed macrophage-mediated cytotoxicity in both the differentiation and effector phases. Both PQA-18 and tofacitinib suppressed the expression of HLA-ABC by macrophages. However, contrary to Tofacitinib, PQA-18 also significantly suppressed the expression of CD11b, HLA-DR and CD40 on macrophages. PQA-18 significantly suppressed CCR7 expression on day 3 and on day 6, but Tofacitinib-induced suppression only on day 6. In a mixed lymphocyte reaction (MLR) assay, PQA-18 was found to suppress Interleukin-2 (IL-2)-stimulated T cell proliferation to a lesser extent than Tofacitinib. However, PQA-18 suppressed xenogeneic-induced T cell proliferation more strongly than Tofacitinib on day 3 and the suppression was similar on day 7. In conclusion, PQA-18 has the potential to function as an immunosuppressant for xenotransplantation.
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Affiliation(s)
- Pei-Chi Lo
- Department of Surgery, Osaka University Graduate School of Medicine Japan
| | - Akira Maeda
- Department of Surgery, Osaka University Graduate School of Medicine Japan.
| | - Tasuku Kodama
- Department of Surgery, Osaka University Graduate School of Medicine Japan
| | - Chihiro Takakura
- Department of Surgery, Osaka University Graduate School of Medicine Japan
| | - Tomohisa Yoneyama
- Department of Surgery, Osaka University Graduate School of Medicine Japan
| | - Rieko Sakai
- Department of Surgery, Osaka University Graduate School of Medicine Japan
| | - Yuki Noguchi
- Department of Surgery, Osaka University Graduate School of Medicine Japan
| | - Rei Matsuura
- Department of Surgery, Osaka University Graduate School of Medicine Japan
| | - Hiroshi Eguchi
- Department of Surgery, Osaka University Graduate School of Medicine Japan
| | | | - Hiroomi Okuyama
- Department of Surgery, Osaka University Graduate School of Medicine Japan
| | - Shuji Miyagawa
- Department of Surgery, Osaka University Graduate School of Medicine Japan
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Delgado Betancourt E, Hamid B, Fabian BT, Klotz C, Hartmann S, Seeber F. From Entry to Early Dissemination- Toxoplasma gondii's Initial Encounter With Its Host. Front Cell Infect Microbiol 2019; 9:46. [PMID: 30891433 PMCID: PMC6411707 DOI: 10.3389/fcimb.2019.00046] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Accepted: 02/13/2019] [Indexed: 12/27/2022] Open
Abstract
Toxoplasma gondii is a zoonotic intracellular parasite, able to infect any warm-blooded animal via ingestion of infective stages, either contained in tissue cysts or oocysts released into the environment. While immune responses during infection are well-studied, there is still limited knowledge about the very early infection events in the gut tissue after infection via the oral route. Here we briefly discuss differences in host-specific responses following infection with oocyst-derived sporozoites vs. tissue cyst-derived bradyzoites. A focus is given to innate intestinal defense mechanisms and early immune cell events that precede T. gondii's dissemination in the host. We propose stem cell-derived intestinal organoids as a model to study early events of natural host-pathogen interaction. These offer several advantages such as live cell imaging and transcriptomic profiling of the earliest invasion processes. We additionally highlight the necessity of an appropriate large animal model reflecting human infection more closely than conventional infection models, to study the roles of dendritic cells and macrophages during early infection.
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Affiliation(s)
| | - Benjamin Hamid
- Department of Veterinary Medicine, Institute of Immunology, Freie Universität Berlin, Berlin, Germany
| | - Benedikt T Fabian
- FG 16: Mycotic and Parasitic Agents and Mycobacteria, Robert Koch-Institute, Berlin, Germany
| | - Christian Klotz
- FG 16: Mycotic and Parasitic Agents and Mycobacteria, Robert Koch-Institute, Berlin, Germany
| | - Susanne Hartmann
- Department of Veterinary Medicine, Institute of Immunology, Freie Universität Berlin, Berlin, Germany
| | - Frank Seeber
- FG 16: Mycotic and Parasitic Agents and Mycobacteria, Robert Koch-Institute, Berlin, Germany
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Dong Z, Coates D, Liu Q, Sun H, Li C. Quantitative proteomic analysis of deer antler stem cells as a model of mammalian organ regeneration. J Proteomics 2019; 195:98-113. [DOI: 10.1016/j.jprot.2019.01.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 12/25/2018] [Accepted: 01/07/2019] [Indexed: 12/18/2022]
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Zhang X, Li X, Yang Z, Tao K, Wang Q, Dai B, Qu S, Peng W, Zhang H, Cooper DKC, Dou K. A review of pig liver xenotransplantation: Current problems and recent progress. Xenotransplantation 2019; 26:e12497. [PMID: 30767272 DOI: 10.1111/xen.12497] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 01/01/2019] [Accepted: 01/07/2019] [Indexed: 12/14/2022]
Abstract
Pig liver xenotransplantation appears to be more perplexing when compared to heart or kidney xenotransplantation, even though great progress has been achieved. The relevant molecular mechanisms involved in xenogeneic rejection, including coagulopathy, and particularly thrombocytopenia, are complex, and need to be systematically investigated. The deletion of expression of Gal antigens in the liver graft highlights the injurious impact of nonGal antigens, which continue to induce humoral rejection. Innate immunity, particularly mediated by macrophages and natural killer cells, interplays with inflammation and coagulation disorders. Kupffer cells and liver sinusoidal endothelial cells (LSECs) together mediate leukocyte, erythrocyte, and platelet sequestration and phagocytosis, which can be exacerbated by increased cytokine production, cell desialylation, and interspecies incompatibilities. The coagulation cascade is activated by release of tissue factor which can be dependent or independent of the xenoreactive immune response. Depletion of endothelial anticoagulants and anti-platelet capacity amplify coagulation activation, and interspecies incompatibilities of coagulation-regulatory proteins facilitate dysregulation. LSECs involved in platelet phagocytosis and transcytosis, coupled with hepatocyte-mediated degradation, are responsible for thrombocytopenia. Adaptive immunity could also be problematic in long-term liver graft survival. Currently, relevant evidence and study results of various genetic modifications to the pig donor need to be fully determined, with the aim of identifying the ideal transgene combination for pig liver xenotransplantation. We believe that clinical trials of pig liver xenotransplantation should initially be considered as a bridge to allotransplantation.
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Affiliation(s)
- Xuan Zhang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Xiao Li
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Zhaoxu Yang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Kaishan Tao
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Quancheng Wang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Bin Dai
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Shibin Qu
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Wei Peng
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Hong Zhang
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - David K C Cooper
- Xenotransplantation Program, Department of Surgery, University of Alabama at Birmingham, Birmingham, Alabama
| | - Kefeng Dou
- Department of Hepatobiliary Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
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Emerging approaches and technologies in transplantation: the potential game changers. Cell Mol Immunol 2019; 16:334-342. [PMID: 30760918 DOI: 10.1038/s41423-019-0207-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 01/18/2019] [Indexed: 12/27/2022] Open
Abstract
Newly emerging technologies are rapidly changing conventional approaches to organ transplantation. In the modern era, the key challenges to transplantation include (1) how to best individualize and possibly eliminate the need for life-long immunosuppression and (2) how to expand the donor pool suitable for human transplantation. This article aims to provide readers with an updated review of three new technologies that address these challenges. First, single-cell RNA sequencing technology is rapidly evolving and has recently been employed in settings related to transplantation. The new sequencing data indicate an unprecedented cellular heterogeneity within organ transplants, as well as exciting new molecular signatures involved in alloimmune responses. Second, sophisticated nanotechnology platforms provide a means of therapeutically delivering immune modulating reagents to promote transplant tolerance. Tolerogenic nanoparticles with regulatory molecules and donor antigens are capable of targeting host immune responses with tremendous precision, which, in some cases, results in donor-specific tolerance. Third, CRISPR/Cas9 gene editing technology has the potential to precisely remove immunogenic molecules while inserting desirable regulatory molecules. This technology is particularly useful in generating genetically modified pigs for xenotransplantation to solve the issue of the shortage of human organs. Collectively, these new technologies are positioning the transplant community for major breakthroughs that will significantly advance transplant medicine.
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Huang CP, Chen CC, Tsai YT, Wu CC, Shyr CR. Intravesical Administration of Xenogeneic Porcine Urothelial Cells Attenuates Cyclophosphamide-Induced Cystitis in Mice. Cell Transplant 2019; 28:296-305. [PMID: 30675801 PMCID: PMC6425110 DOI: 10.1177/0963689718822773] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
The urothelium of the bladder, renal pelvis, ureter and urethra is maintained through the regulated proliferation and differentiation of urothelial stem and progenitor cells. These cells provide a rich source of a novel urothelial cell therapy approach that could be used to protect, regenerate, repair and restore a damaged urothelium. Urothelial injury caused by physical, chemical and microbial stress is the pathological basis of cystitis (bladder inflammation). The loss of urothelial integrity triggers a series of inflammatory events, resulting in pain and hematuria such as hemorrhage cystitis and interstitial cystitis. Here we investigate a novel cell therapy strategy to treat cystitis by protecting the urothelium from detrimental stresses through intravesically instilling porcine urothelial cells (PUCs) into the bladder. Using a chemical-induced urothelial injury mouse model of cyclophosphamide (CPP)-induced hemorrhagic cystitis, we determined how the intravesical instillation of PUCs could protect the urothelium from toxic attack from CPP metabolites. We show that intravesical PUC instillation protected the bladder from toxic chemical attack in mice receiving CPP with reduced inflammation and edema. Compared with the vehicle control mice, the proliferative response to chemical injury and apoptotic cells within the bladder tissues were reduced by intravesical PUC treatment. Furthermore, the urothelium integrity was maintained in the intravesical PUC-treated group. After xenogeneic PUCs were introduced and adhered to the mouse urothelium, immunological rejection responses were observed with increased neutrophil infiltration in the lamina propria and higher immune-related gene expression. Our findings provide an innovative and promising intravesical PUC cell therapy for cystitis with urothelial injury by protecting the urothelium from noxious agents.
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Affiliation(s)
- Chi-Ping Huang
- Departments of Medical Laboratory Science and Biotechnology and Urology, Sex Hormone Research Center, China Medical University and Hospital, Taichung
| | - Chi-Cheng Chen
- Department of Urology, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung
| | - Yi-Tung Tsai
- Departments of Medical Laboratory Science and Biotechnology and Urology, Sex Hormone Research Center, China Medical University and Hospital, Taichung
| | - Chun-Chie Wu
- Departments of Medical Laboratory Science and Biotechnology and Urology, Sex Hormone Research Center, China Medical University and Hospital, Taichung
| | - Chih-Rong Shyr
- Departments of Medical Laboratory Science and Biotechnology and Urology, Sex Hormone Research Center, China Medical University and Hospital, Taichung
- Chih-Rong Shyr, Sex Hormone Research Center, Departments of Medical Laboratory Science and Biotechnology, China Medical University and Hospital, No. 9, Hsiuh-Shih Rd, Taichung 404.
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Ramackers W, Werwitzke S, Klose J, Friedrich L, Johanning K, Bergmann S, Klempnauer J, Winkler M, Tiede A. Investigation of the influence of xenoreactive antibodies on activation of complement and coagulation in an ex vivo perfusion animal study using porcine kidneys. Transpl Int 2019; 32:546-556. [PMID: 30597634 DOI: 10.1111/tri.13396] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 06/10/2018] [Accepted: 12/23/2018] [Indexed: 12/30/2022]
Abstract
During pig-to-primate xenotransplantation or perfusion of porcine organs with human blood, a xenogeneic coagulopathy with consecutive development of thrombotic microangiopathy (TMA) can be observed. The aim of this study was to elucidate the influence of the reduction of xenoreactive natural antibodies on the coagulopathy using an ex vivo perfusion system. Thirteen perfusion experiments using landrace wild-type porcine kidneys were performed in three different experimental groups: autologous, xenogeneic, and immunoadsorption. During and after perfusion, blood and tissue samples were collected to assess markers of coagulation, complement, inflammation, and endothelial activation. Immunoadsorption prior to perfusion did not prolong perfusion time (174 min ±28) compared to xenogeneic (182 min ±22) experiments, whereas autologous perfusion was possible for maximum of 240 min in all experiments. Activation of coagulation was similar comparing perfusions after immunoadsorption (D-Dimer 24 186 μg/l ±5813; TAT 566 μg/l ±34) to xenogeneic (D-Dimer 22 175 μg/l ±7826, TAT 600 μg/l ±0) experiments. But antibody-mediated complement activation was reduced in the immunoadsorption group. TNF-alpha and markers of endothelial cell activation were lower in the immunoadsorption group compared to the xenogeneic experiments. In this ex vivo perfusion model, we observed that marked removal of xenogeneic antibodies can reduce complement activation via the classical pathway as well as endothelial cell activation and inflammation. Immunoadsorption cannot prevent the activation of the terminal complement cascade and coagulation.
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Affiliation(s)
- Wolf Ramackers
- Department of General and Transplantation Surgery, Hannover Medical School, Hannover, Germany
| | - Sonja Werwitzke
- Department of Hematology Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
| | - Johannes Klose
- Department of Surgery, University Hospital Heidelberg, Heidelberg, Germany
| | - Lars Friedrich
- Department of Anaesthesiology and Intensive Care Medicine, Hannover Medical School, Hannover, Germany
| | - Kai Johanning
- Department of Anaesthesiology and Intensive Care Medicine, Hannover Medical School, Hannover, Germany
| | - Sabine Bergmann
- Department of General and Transplantation Surgery, Hannover Medical School, Hannover, Germany
| | - Jürgen Klempnauer
- Department of General and Transplantation Surgery, Hannover Medical School, Hannover, Germany
| | - Michael Winkler
- Department of General and Transplantation Surgery, Hannover Medical School, Hannover, Germany
| | - Andreas Tiede
- Department of Hematology Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany
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Denner J. Reduction of the survival time of pig xenotransplants by porcine cytomegalovirus. Virol J 2018; 15:171. [PMID: 30409210 PMCID: PMC6225623 DOI: 10.1186/s12985-018-1088-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 10/28/2018] [Indexed: 02/06/2023] Open
Abstract
Background Xenotransplantation using pig cells, tissues and organs may help to overcome the shortage of human tissues and organs for the treatment of tissue and organ failure. Progress in the prevention of immunological rejection using genetically modified pigs and new, more effective, immunosuppression regimens will allow clinical application of xenotransplantation in near future. However, xenotransplantation may be associated with the transmission of potentially zoonotic porcine microorganisms. Until now the only xenotransplantation-associated transmission was the transmission of the porcine cytomegalovirus (PCMV) into non-human primates. PCMV caused a significant reduction of the survival time of the pig transplant. Main body of the abstract Here the available publications were analysed in order to establish the mechanism how PCMV shortened the survival time of xenotransplants. PCMV is a herpesvirus related to the human cytomegalovirus and the human herpesviruses 6 and 7. These three human herpesviruses can cause serious disease among immunocompromised human individuals, including transplant recipients. It was shown that PCMV predominantly contributes to the reduction of transplant survival in non-human primates by disruption of the coagulation system and by suppression and exhaustion of the immune system. Conclusion Although it is still unknown whether PCMV infects primate cells including human cells, indirect mechanism of the virus infection may cause reduction of the xenotransplant survival in future clinical trials and therefore PCMV has to be eliminated from donor pigs.
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Affiliation(s)
- Joachim Denner
- Robert Koch Fellow, Robert Koch Institute, Nordufer 20, 13353, Berlin, Germany.
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43
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Face of the Future: Lessons Learned and Opportunities in Composite Allotransplantation. J Craniofac Surg 2018; 29:818-819. [PMID: 29771837 DOI: 10.1097/scs.0000000000004617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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44
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Weiss RA. Infection hazards of xenotransplantation: Retrospect and prospect. Xenotransplantation 2018; 25:e12401. [PMID: 29756309 DOI: 10.1111/xen.12401] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 03/29/2018] [Indexed: 02/06/2023]
Affiliation(s)
- Robin A Weiss
- Division of Infection & Immunity, University College London, London, UK
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45
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Łopata K, Wojdas E, Nowak R, Łopata P, Mazurek U. Porcine Endogenous Retrovirus (PERV) - Molecular Structure and Replication Strategy in the Context of Retroviral Infection Risk of Human Cells. Front Microbiol 2018; 9:730. [PMID: 29755422 PMCID: PMC5932395 DOI: 10.3389/fmicb.2018.00730] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 03/28/2018] [Indexed: 12/28/2022] Open
Abstract
The xenotransplantation of porcine tissues may help overcome the shortage of human organs for transplantation. However, there are some concerns about recipient safety because the risk of porcine endogenous retrovirus (PERV) transmission to human cells remains unknown. Although, to date, no PERV infections have been noted in vivo, the possibility of such infections has been confirmed in vitro. Better understanding of the structure and replication cycle of PERVs is a prerequisite for determining the risk of infection and planning PERV-detection strategies. This review presents the current state of knowledge about the structure and replication cycle of PERVs in the context of retroviral infection risk.
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Affiliation(s)
- Krzysztof Łopata
- Department of Molecular Biology, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Poland
| | - Emilia Wojdas
- Department of Molecular Biology, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Poland.,Department of Instrumental Analysis, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Poland
| | - Roman Nowak
- Department of Molecular Biology, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Poland
| | - Paweł Łopata
- Department of Molecular Biology, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Poland
| | - Urszula Mazurek
- Department of Molecular Biology, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia, Katowice, Poland
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