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Inaki R, Sato Y, Nakamura D, Aikawa Y, Takato T, Hoshi K, Hikita A. Lipoaspirate stored at a constant low temperature by electric control suppresses intracellular metabolism and maintains high cell viability. Regen Ther 2023; 24:662-669. [PMID: 38028938 PMCID: PMC10667615 DOI: 10.1016/j.reth.2023.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/20/2023] [Accepted: 11/13/2023] [Indexed: 12/01/2023] Open
Abstract
Background Cell therapy is a useful treatment method for wide spectrum of diseases which utilizes the immunosuppressive and regenerative abilities of administered cells. It is essential to build a transport system of tissues from which cells are harvested, because various external factors, such as temperature, time, air pressure, and vibration affect the cell functions isolated from body tissues. In particular, temperature is a critical factor which determines the viability of the cells and organs. In this study, we investigated the optimal temperature during the transportation of lipoaspirates from which adipose -derived stem cells (ASCs) were isolated. Method Lipoaspirates obtained by liposuctions (lipomatic or vaser method) were transported in four different temperature zones (4, 20, 32, and 37 °C) in a transport container which is electrically controlled to maintain a constant temperature during transport. Stromal vascular fractions (SVFs) were harvested from the lipoaspirate, and the cell number, viability and proliferation rate and the yield of ASCs were examined. In addition, the metabolic state of the cells was examined. Results ASCs from lipoaspirates transported at high temperature significantly decreased cell viability, while those at low temperature maintained high cell viability and showed good cell proliferation. In addition, transportation of lipoaspirates at low temperature resulted in a high level of NAD+/NADH, coenzymes involved in intracellular metabolism, and a low level of lactate in lipoaspirate suppressed the glycolytic system of intracellular metabolism, in ASCs. Conclusion The lipoaspirate transported at 4 °C exhibited best results regarding live cell number, viability and cell proliferation in our experiments. This study offers a direction to build a transport system that connects laboratories and hospitals and achieve a beneficial therapy for patients.
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Affiliation(s)
- Ryoko Inaki
- Department of Oral-maxillofacial Surgery, Dentistry and Orthodontics, The University of Tokyo Hospital, Tokyo, Japan
- Department of Tissue Engineering, The University of Tokyo Hospital, Tokyo, Japan
- National Hospital Organization Miyagi National Hospital, Japan
| | - Yoshihiko Sato
- Pharma & Healthcare Logistics Team, Tokyo Branch, Mitsubishi Logistics Corporation, Tokyo, Japan
| | | | | | | | - Kazuto Hoshi
- Department of Oral-maxillofacial Surgery, Dentistry and Orthodontics, The University of Tokyo Hospital, Tokyo, Japan
- Department of Tissue Engineering, The University of Tokyo Hospital, Tokyo, Japan
| | - Atsuhiko Hikita
- Department of Tissue Engineering, The University of Tokyo Hospital, Tokyo, Japan
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Ohara M, Ishikawa J, Yoshimoto S, Hakamata Y, Kobayashi E. A rat model of dual-flow liver machine perfusion system. Acta Cir Bras 2023; 38:e387723. [PMID: 37909599 PMCID: PMC10664844 DOI: 10.1590/acb387723] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 10/01/2023] [Indexed: 11/03/2023] Open
Abstract
PURPOSE As clinical liver perfusion systems use portal vein and artery flow, dual perfusion techniques are required even in small animal models in order to reproduce clinical setting. The aim of this study was to construct a new dual-flow perfusion system in rat model and optimized the oxygen supply to ensure the aerobic metabolization. METHODS The dual-flow circuit was fabricated using rat liver and whole blood samples as perfusates. The oxygen supply was controlled according to the amount of dissolved oxygen in the perfusate. Perfusate parameters and adenosine triphosphate (ATP) levels were analyzed to evaluate organ function and metabolic energy state. Stored whole blood also tested the suitability as perfusate. RESULTS Stored blood showed decrease oxygen delivery and liver function compared to fresh blood. Using fresh blood as perfusate with air only, the dissolved oxygen levels remained low and anaerobic metabolism increased. In contrast, with oxygen control at living body level, anaerobic metabolism was well suppressed, and tissue ATP content was increased. CONCLUSIONS We developed a new dual-flow system that enable to reproduce the clinical settings. The perfusion system showed the possibility to improve the energy metabolic state of the perfused organ under appropriate partial pressure of oxygen.
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Affiliation(s)
- Masayuki Ohara
- Nippon Veterinary and Life Science University – School of Veterinary Nursing and Technology – Tokyo, Japan
- Screen Holdings Co., Ltd. – Innovation Development Department – Tokyo, Japan
| | - Jun Ishikawa
- Nippon Veterinary and Life Science University – School of Veterinary Nursing and Technology – Tokyo, Japan
- Screen Holdings Co., Ltd. – Innovation Development Department – Tokyo, Japan
| | - Syuhei Yoshimoto
- Screen Holdings Co., Ltd. – Innovation Development Department – Tokyo, Japan
| | - Yoji Hakamata
- Nippon Veterinary and Life Science University – School of Veterinary Nursing and Technology – Tokyo, Japan
| | - Eiji Kobayashi
- Nippon Veterinary and Life Science University – School of Veterinary Nursing and Technology – Tokyo, Japan
- Jikei University School of Medicine – Department of Kidney Regenerative Medicine – Kyoto, Japan
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3
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Yoshimoto S, Soyama A, Fukumoto M, Hara T, Hidaka M, Torai S, Kasamatsu H, Ishikawa J, Ohara M, Kobayashi E, Eguchi S. Preliminary observations of an ex vivo normothermic whole blood machine perfusion in an experimental liver transplant porcine model. Transplant Proc 2023:S0041-1345(23)00236-1. [PMID: 37117106 DOI: 10.1016/j.transproceed.2023.03.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 03/18/2023] [Accepted: 03/29/2023] [Indexed: 04/30/2023]
Abstract
BACKGROUND Even though transplantation is an essential treatment with no viable alternatives, a significant worldwide donor shortage persists. In this study, we assessed the metabolism of livers that underwent extended periods of circulatory death and subsequently conducted functional validation through transplantation to explore the feasibility of using livers from an uncontrolled donor after circulatory death (u-DCD). METHODS A donor model simulating u-DCD was constructed using pigs. The prolonged warm ischemia time (WIT) was set to 60, 120, and 180 minutes, and the liver function was evaluated after 24 hours of perfusion using an originally developed normothermic perfusion system. Based on the results, functional confirmation by transplantation was performed on the 2 groups with prolonged WIT of 60 and 180 minutes. RESULTS Based on the 24-hour perfusion of the liver alone, we evaluated the function by transplanting the WI 60-minute model and 180-minute model (N = 3 each). Warm ischemia was 73.5 ± 3.7 minutes and 188 ± 3 minutes in the 60-minute model and 180-minute model, respectively. In the model with 60 minutes of WI, one case survived until the endpoint, and 2 cases survived between 8 and 12 hours, whereas, in the model with 180 minutes of WI, they died within 6 hours. CONCLUSION We constructed a completely uncontrolled circulatory arrest model without anticoagulation and showed the possibility of using u-DCD livers by ex vivo machine perfusion and transplantation.
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Affiliation(s)
- Syuhei Yoshimoto
- Department of Innovative surgical technology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan; R&D Department 3, SCREEN Holdings, Co, Ltd, Kyoto, Japan.
| | - Akihiko Soyama
- Department of Innovative surgical technology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan; Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Masayuki Fukumoto
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Takanobu Hara
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Masaaki Hidaka
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Shinji Torai
- R&D Department 3, SCREEN Holdings, Co, Ltd, Kyoto, Japan; Department of Organ Fabrication, Keio University School of Medicine, Tokyo, Japan
| | | | - Jun Ishikawa
- R&D Department 3, SCREEN Holdings, Co, Ltd, Kyoto, Japan
| | - Masayuki Ohara
- R&D Department 3, SCREEN Holdings, Co, Ltd, Kyoto, Japan
| | - Eiji Kobayashi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan; Department of Organ Fabrication, Keio University School of Medicine, Tokyo, Japan
| | - Susumu Eguchi
- Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
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Yuta T, Tian T, Chiba Y, Miyazaki K, Funada K, Mizuta K, Fu Y, Kawahara J, Iwamoto T, Takahashi I, Fukumoto S, Yoshizaki K. Development of a novel ex vivo organ culture system to improve preservation methods of regenerative tissues. Sci Rep 2023; 13:3354. [PMID: 36849572 PMCID: PMC9971270 DOI: 10.1038/s41598-023-29629-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 02/08/2023] [Indexed: 03/01/2023] Open
Abstract
Recent advances in regenerative technology have made the regeneration of various organs using pluripotent stem cells possible. However, a simpler screening method for evaluating regenerated organs is required to apply this technology to clinical regenerative medicine in the future. We have developed a simple evaluation method using a mouse tooth germ culture model of organs formed by epithelial-mesenchymal interactions. In this study, we successfully established a simple method that controls tissue development in a temperature-dependent manner using a mouse tooth germ ex vivo culture model. We observed that the development of the cultured tooth germ could be delayed by low-temperature culture and resumed by the subsequent culture at 37 °C. Furthermore, the optimal temperature for the long-term preservation of tooth germ was 25 °C, a subnormothermic temperature that maintains the expression of stem cell markers. We also found that subnormothermic temperature induces the expression of cold shock proteins, such as cold-inducible RNA-binding protein, RNA-binding motif protein 3, and serine and arginine rich splicing factor 5. This study provides a simple screening method to help establish the development of regenerative tissue technology using a tooth organ culture model. Our findings may be potentially useful for making advances in the field of regenerative medicine.
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Affiliation(s)
- Tomomi Yuta
- grid.177174.30000 0001 2242 4849Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Tian Tian
- grid.177174.30000 0001 2242 4849Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Yuta Chiba
- grid.177174.30000 0001 2242 4849Dento-Craniofacial Development and Regeneration Research Center, Kyushu University Faculty of Dental Science, Fukuoka, Japan ,grid.177174.30000 0001 2242 4849Section of Pediatric Dentistry, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Kanako Miyazaki
- grid.177174.30000 0001 2242 4849Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Keita Funada
- grid.177174.30000 0001 2242 4849Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Kanji Mizuta
- grid.177174.30000 0001 2242 4849Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Yao Fu
- grid.177174.30000 0001 2242 4849Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Jumpei Kawahara
- grid.177174.30000 0001 2242 4849Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Tsutomu Iwamoto
- grid.265073.50000 0001 1014 9130Department of Pediatric Dentistry/Special Needs Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Ichiro Takahashi
- grid.177174.30000 0001 2242 4849Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan
| | - Satoshi Fukumoto
- Dento-Craniofacial Development and Regeneration Research Center, Kyushu University Faculty of Dental Science, Fukuoka, Japan. .,Section of Pediatric Dentistry, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan. .,Division of Pediatric Dentistry, Department of Community Social Dentistry, Tohoku University Graduate School of Dentistry, Sendai, Japan.
| | - Keigo Yoshizaki
- Section of Orthodontics and Dentofacial Orthopedics, Division of Oral Health, Growth and Development, Kyushu University Faculty of Dental Science, Fukuoka, Japan. .,Dento-Craniofacial Development and Regeneration Research Center, Kyushu University Faculty of Dental Science, Fukuoka, Japan.
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Higashi Y, Homma J, Sekine H, Yago H, Kobayashi E, Shimizu T. External pressure dynamics promote kidney viability and perfusate filtration during ex vivo kidney perfusion. Sci Rep 2022; 12:21564. [PMID: 36513748 PMCID: PMC9747902 DOI: 10.1038/s41598-022-26147-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 12/09/2022] [Indexed: 12/15/2022] Open
Abstract
Normothermic machine perfusion (NMP) has not yet been established as a technique for preserving organs for a day. A key contributing factor to the same is that the perfusing solutions cannot circulate continuously and evenly in the organs. Here, we conceived a method of applying intermittent air pressure from outside the organ to assist its circulatory distribution during perfusion. We used a perfusion culture system while applying external pressure to culture rat kidneys and compared the circulatory distribution in the kidneys, changes in tissue morphology due to injury, and perfusate filtration. The intermittent pressurization (IMP) (-) group showed markedly poorer circulation on the upper side compared with that in the lower side, alongside histological damage. On the other hand, the IMP (+) group showed improved circulation in the upper side and had lesser histological damage. Furthermore, the IMP (+) group maintained the ability to filter perfusate for 24 h. In transplantation medicine and regenerative medicine research, this method has the potential to contribute to more efficient organ preservation and more functional tissue regeneration in the future.
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Affiliation(s)
- Yuhei Higashi
- grid.410818.40000 0001 0720 6587Institute of Advanced Biomedical Engineering and Science, TWIns, Tokyo Women’s Medical University, 8-1 Kawada-Cho, Shinjuku-Ku, Tokyo, 162-8666 Japan ,Tokaihit Co., Ltd., Shizuoka, Japan
| | - Jun Homma
- grid.410818.40000 0001 0720 6587Institute of Advanced Biomedical Engineering and Science, TWIns, Tokyo Women’s Medical University, 8-1 Kawada-Cho, Shinjuku-Ku, Tokyo, 162-8666 Japan
| | - Hidekazu Sekine
- grid.410818.40000 0001 0720 6587Institute of Advanced Biomedical Engineering and Science, TWIns, Tokyo Women’s Medical University, 8-1 Kawada-Cho, Shinjuku-Ku, Tokyo, 162-8666 Japan
| | - Hiroki Yago
- grid.410818.40000 0001 0720 6587Institute of Advanced Biomedical Engineering and Science, TWIns, Tokyo Women’s Medical University, 8-1 Kawada-Cho, Shinjuku-Ku, Tokyo, 162-8666 Japan
| | - Eiji Kobayashi
- grid.411898.d0000 0001 0661 2073Department of Kidney Regenerative Medicine, Industry-Academia Collaborative Department, The Jikei University School of Medicine, Tokyo, Japan
| | - Tatsuya Shimizu
- grid.410818.40000 0001 0720 6587Institute of Advanced Biomedical Engineering and Science, TWIns, Tokyo Women’s Medical University, 8-1 Kawada-Cho, Shinjuku-Ku, Tokyo, 162-8666 Japan
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Yoshida A, Sekine W, Homma J, Sekine H, Itoyama YY, Sasaki D, Matsuura K, Kobayashi E, Shimizu T. Development of appropriate fatty acid formulations to raise the contractility of constructed myocardial tissues. Regen Ther 2022; 21:413-423. [PMID: 36248630 PMCID: PMC9525806 DOI: 10.1016/j.reth.2022.09.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 09/02/2022] [Accepted: 09/16/2022] [Indexed: 10/31/2022] Open
Abstract
Introduction Methods Results Conclusions
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Enam SF, Kilic CY, Huang J, Kang BJ, Chen R, Tribble CS, Ilich E, Betancur MI, Blocker SJ, Owen SJ, Buckley AF, Lyon JG, Bellamkonda RV. Cytostatic hypothermia and its impact on glioblastoma and survival. SCIENCE ADVANCES 2022; 8:eabq4882. [PMID: 36427309 PMCID: PMC9699673 DOI: 10.1126/sciadv.abq4882] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 10/27/2022] [Indexed: 06/16/2023]
Abstract
Patients with glioblastoma (GBM) have limited options and require novel approaches to treatment. Here, we studied and deployed nonfreezing "cytostatic" hypothermia to stunt GBM growth. This growth-halting method contrasts with ablative, cryogenic hypothermia that kills both neoplastic and infiltrated healthy tissue. We investigated degrees of hypothermia in vitro and identified a cytostatic window of 20° to 25°C. For some lines, 18 hours/day of cytostatic hypothermia was sufficient to halt division in vitro. Next, we fabricated an experimental tool to test local cytostatic hypothermia in two rodent GBM models. Hypothermia more than doubled median survival, and all rats that successfully received cytostatic hypothermia survived their study period. Unlike targeted therapeutics that are successful in preclinical models but fail in clinical trials, cytostatic hypothermia leverages fundamental physics that influences biology broadly. It is a previously unexplored approach that could provide an additional option to patients with GBM by halting tumor growth.
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Affiliation(s)
- Syed Faaiz Enam
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, NC 27705, USA
- Department of Neurology, University of Texas Southwestern Medical Center, Dallas, TX 75235, USA
| | - Cem Y. Kilic
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, NC 27705, USA
| | - Jianxi Huang
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, NC 27705, USA
| | - Brian J. Kang
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, NC 27705, USA
| | - Reed Chen
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, NC 27705, USA
| | - Connor S. Tribble
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, NC 27705, USA
| | - Ekaterina Ilich
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, NC 27705, USA
| | - Martha I. Betancur
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, NC 27705, USA
| | - Stephanie J. Blocker
- Department of Radiology, Center for In Vivo Microscopy, Duke University, Durham, NC 27705, USA
| | - Steven J. Owen
- Bio-medical Machine Shop, Pratt School of Engineering, Duke University, Durham, NC 27705, USA
| | - Anne F. Buckley
- Department of Pathology, School of Medicine, Duke University, Durham, NC 27705, USA
| | - Johnathan G. Lyon
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, NC 27705, USA
- Department of Biology, Emory University, Atlanta, GA 30332, USA
| | - Ravi V. Bellamkonda
- Department of Biomedical Engineering, Pratt School of Engineering, Duke University, Durham, NC 27705, USA
- Department of Biology, Emory University, Atlanta, GA 30332, USA
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Albrecht FB, Schmidt FF, Volz AC, Kluger PJ. Bioprinting of 3D Adipose Tissue Models Using a GelMA-Bioink with Human Mature Adipocytes or Human Adipose-Derived Stem Cells. Gels 2022; 8:gels8100611. [PMID: 36286112 PMCID: PMC9601941 DOI: 10.3390/gels8100611] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/21/2022] [Accepted: 09/21/2022] [Indexed: 12/31/2022] Open
Abstract
Adipose tissue is related to the development and manifestation of multiple diseases, demonstrating the importance of suitable in vitro models for research purposes. In this study, adipose tissue lobuli were explanted, cultured, and used as an adipose tissue control to evaluate in vitro generated adipose tissue models. During culture, lobule exhibited a stable weight, lactate dehydrogenase, and glycerol release over 15 days. For building up in vitro adipose tissue models, we adapted the biomaterial gelatin methacryloyl (GelMA) composition and handling to homogeneously mix and bioprint human primary mature adipocytes (MA) and adipose-derived stem cells (ASCs), respectively. Accelerated cooling of the bioink turned out to be essential for the homogeneous distribution of lipid-filled MAs in the hydrogel. Last, we compared manual and bioprinted GelMA hydrogels with MA or ASCs and the explanted lobules to evaluate the impact of the printing process and rate the models concerning the physiological reference. The viability analyses demonstrated no significant difference between the groups due to additive manufacturing. The staining of intracellular lipids and perilipin A suggest that GelMA is well suited for ASCs and MA. Therefore, we successfully constructed physiological in vitro models by bioprinting MA-containing GelMA bioinks.
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Affiliation(s)
- Franziska B. Albrecht
- Reutlingen Research Institute, Reutlingen University, 72762 Reutlingen, Germany
- Faculty of Natural Science, University of Hohenheim, 70599 Stuttgart, Germany
| | - Freia F. Schmidt
- Reutlingen Research Institute, Reutlingen University, 72762 Reutlingen, Germany
| | - Ann-Cathrin Volz
- Reutlingen Research Institute, Reutlingen University, 72762 Reutlingen, Germany
| | - Petra J. Kluger
- Faculty of Applied Chemistry, Reutlingen University, 72762 Reutlingen, Germany
- Correspondence: ; Tel.: +49-7121-271-2061
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Critical Considerations in Bioluminescence Imaging of Transplanted Islets: Dynamic Signal Change in Early Posttransplant Phase and Signal Absorption by Tissues. Pancreas 2022; 51:234-242. [PMID: 35584380 DOI: 10.1097/mpa.0000000000002004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVES In pancreatic islet transplantation studies, bioluminescence imaging enables quantitative and noninvasive tracking of graft survival. Amid the recent heightened interest in extrahepatic sites for islet and stem cell-derived beta-like cell transplantations, proper understanding the nature of bioluminescence imaging in these sites is important. METHODS Islets isolated from Firefly rats ubiquitously expressing luciferase reporter gene in Lewis rats were transplanted into subcutaneous or kidney capsule sites of wild-type Lewis rats or immunodeficient mice. Posttransplant changes of bioluminescence signal curves and absorption of bioluminescence signal in transplantation sites were examined. RESULTS The bioluminescence signal curve dynamically changed in the early posttransplantation phase; the signal was low within the first 5 days after transplantation. A substantial amount of bioluminescence signal was absorbed by tissues surrounding islet grafts, correlating to the depth of the transplanted site from the skin surface. Grafts in kidney capsules were harder to image than those in the subcutaneous site. Within the kidney capsule, locations that minimized depth from the skin surface improved the graft detectability. CONCLUSIONS Posttransplant phase and graft location/depth critically impact the bioluminescence images captured in islet transplantation studies. Understanding these parameters is critical for reducing experimental biases and proper interpretation of data.
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Ma Y, Gao L, Tian Y, Chen P, Yang J, Zhang L. Advanced biomaterials in cell preservation: Hypothermic preservation and cryopreservation. Acta Biomater 2021; 131:97-116. [PMID: 34242810 DOI: 10.1016/j.actbio.2021.07.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 06/29/2021] [Accepted: 07/01/2021] [Indexed: 02/07/2023]
Abstract
Cell-based medicine has made great advances in clinical diagnosis and therapy for various refractory diseases, inducing a growing demand for cell preservation as support technology. However, the bottleneck problems in cell preservation include low efficiency and poor biocompatibility of traditional protectants. In this review, cell preservation technologies are categorized according to storage conditions: hypothermic preservation at 1 °C~35 °C to maintain short-term cell viability that is useful in cell diagnosis and transport, while cryopreservation at -196 °C~-80 °C to maintain long-term cell viability that provides opportunities for therapeutic cell product storage. Firstly, the background and developmental history of the protectants used in the two preservation technologies are briefly introduced. Secondly, the progress in different cellular protection mechanisms for advanced biomaterials are discussed in two preservation technologies. In hypothermic preservation, the hypothermia-induced and extracellular matrix-loss injuries to cells are comprehensively summarized, as well as the recent biomaterials dependent on regulation of cellular ATP level, stabilization of cellular membrane, balance of antioxidant defense system, and supply of mimetic ECM to prolong cell longevity are provided. In cryopreservation, cellular injuries and advanced biomaterials that can protect cells from osmotic or ice injury, and alleviate oxidative stress to allow cell survival are concluded. Last, an insight into the perspectives and challenges of this technology is provided. We envision advanced biocompatible materials for highly efficient cell preservation as critical in future developments and trends to support cell-based medicine. STATEMENT OF SIGNIFICANCE: Cell preservation technologies present a critical role in cell-based applications, and more efficient biocompatible protectants are highly required. This review categorizes cell preservation technologies into hypothermic preservation and cryopreservation according to their storage conditions, and comprehensively reviews the recently advanced biomaterials related. The background, development, and cellular protective mechanisms of these two preservation technologies are respectively introduced and summarized. Moreover, the differences, connections, individual demands of these two technologies are also provided and discussed.
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Affiliation(s)
- Yiming Ma
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China; Frontier Technology Research Institute, Tianjin University, Tianjin 300350, PR China
| | - Lei Gao
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China; Frontier Technology Research Institute, Tianjin University, Tianjin 300350, PR China
| | - Yunqing Tian
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China; Frontier Technology Research Institute, Tianjin University, Tianjin 300350, PR China
| | - Pengguang Chen
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China; Frontier Technology Research Institute, Tianjin University, Tianjin 300350, PR China
| | - Jing Yang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China; Frontier Technology Research Institute, Tianjin University, Tianjin 300350, PR China.
| | - Lei Zhang
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300350, PR China; Frontier Technology Research Institute, Tianjin University, Tianjin 300350, PR China.
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Thanuja MY, Suma BS, Dinesh D, Ranganath SH, Srinivas SP. Microtubule Stabilization Protects Hypothermia-Induced Damage to the Cytoskeleton and Barrier Integrity of the Corneal Endothelial Cells. J Ocul Pharmacol Ther 2021; 37:399-411. [PMID: 34227869 DOI: 10.1089/jop.2021.0036] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Purpose: To determine the impact of hypothermia on the barrier function of donor corneal endothelium, thereby enhancing the success of corneal transplantation. Methods: Primary cultures of porcine endothelial cells were subjected to hypothermia (15 h; 4°C). The impact on microtubule assembly, peri-junctional actomyosin ring (PAMR), and ZO-1 was assessed by immunocytochemistry with and without pretreatment with a microtubule-stabilizing agent (Epothilone B; EpoB; 100 nM) and a p38 MAP kinase inhibitor (SB-203580; 20 μM). In addition, EpoB-loaded PLGA nanoparticles (ENPs) prepared by nanoprecipitation technique and coated with poly-L-lysine (PLL-ENPs) were administered one-time for sustained intracellular delivery of EpoB. Results: Exposure to hypothermia led to microtubule disassembly concomitant with the destruction of PAMR and the displacement of ZO-1 at the cellular periphery, suggesting a loss in barrier integrity. These adverse effects were attenuated by pretreatment with EpoB or SB-203580. PLL-ENPs possessed a zeta potential of ∼26 mV and a size of ∼110 nm. Drug loading and entrapment efficiency were 5% (w/w) and ∼87%, respectively, and PLL-ENPs showed a biphasic release in vitro: burst phase (1 day), followed by a sustained phase (∼4 weeks). Pretreatment with PLL-ENPs (0.4 mg/mL) for 24 h stabilized the microtubules and opposed the hypothermia-induced damage to PAMR and the redistribution of ZO-1. Conclusions: Hypothermia induces microtubule disassembly via activation of p38 MAP kinase and subsequently breaks down the barrier function of the endothelium. Sustained intracellular delivery of EpoB using nanoparticles has the potential to overcome endothelial barrier failure during prolonged cold storage of donor cornea.
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Affiliation(s)
- Marasarakottige Y Thanuja
- Bio-INvENT Lab, Department of Chemical Engineering, Siddaganga Institute of Technology, Tumakuru, India
| | - Bangalore S Suma
- Bioimaging Facility, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, India
| | - Divyasree Dinesh
- Department of Biotechnology, Siddaganga Institute of Technology, Tumakuru, India
| | - Sudhir H Ranganath
- Bio-INvENT Lab, Department of Chemical Engineering, Siddaganga Institute of Technology, Tumakuru, India
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12
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Rapid Metabolic Recovery of Donor Circulatory Death Liver Graft Using Whole Blood Perfusion: A Pig Study. Transplant Direct 2021; 7:e712. [PMID: 34131584 PMCID: PMC8196120 DOI: 10.1097/txd.0000000000001170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/12/2021] [Accepted: 04/03/2021] [Indexed: 01/08/2023] Open
Abstract
Ex vivo perfusion technology has been actively developed to solve the problem of severe donor shortage. In this study, the ex vivo metabolic characteristics of porcine donation after circulatory death (DCD) liver in short-term perfusion using whole or diluted blood were compared with those of the in vivo transplanted state to evaluate their initial response to resuscitation.
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13
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Ice Growth Suppression in the Solution Flows of Antifreeze Protein and Sodium Chloride in a Mini-Channel. Processes (Basel) 2021. [DOI: 10.3390/pr9020306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The control of ice growth inside channels of aqueous solution flows is important in numerous fields, including (a) cold-energy transportation plants and (b) the preservation of supercooled human organs for transplantation. A promising method for this control is to add a substance that influences ice growth in the flows. However, limited results have been reported on the effects of such additives. Using a microscope, we measured the growth of ice from one sidewall toward the opposite sidewall of a mini-channel, where aqueous solutions of sodium chloride and antifreeze protein flowed. Our aim was to considerably suppress ice growth by mixing the two solutes. Inclined interfaces, the overlapping of serrated interfaces, and interfaces with sharp and flat tips were observed in the cases of the protein-solution, salt-solution, and mixed-solution flows, respectively. In addition, it was found that the average interface velocity in the case of the mixed-solution flow was the lowest and decreased by 64% compared with that of pure water. This significant suppression of the ice-layer growth can be attributed to the synergistic effects of the ions and antifreeze protein on the diffusion of protein.
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14
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Yoshida K, Nakamura S, Sakamoto H, Kondo M, Chouno T, Ikegami Y, Shirakigawa N, Mizumoto H, Yamashita YI, Baba H, Ijima H. Normothermic machine perfusion system satisfying oxygen demand of liver could maintain liver function more than subnormothermic machine perfusion. J Biosci Bioeng 2020; 131:107-113. [PMID: 32948422 DOI: 10.1016/j.jbiosc.2020.08.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 08/05/2020] [Accepted: 08/23/2020] [Indexed: 02/07/2023]
Abstract
Liver transplantation plays an important role in the medical field. To improve the quality of a donor liver, there is a need to establish a preservation system to prevent damage and maintain liver function. In response to this demand, machine perfusion (MP) has been proposed as a new liver preservation method instead of the conventional static cold storage. There is controversy about the optimal MP temperature of the donor liver. Since the oxygen consumption of the liver differs depending on the temperature, construction of a system that satisfies the oxygen demand of the liver is crucial for optimizing the preservation temperature. In this study, an MP system, which satisfies the oxygen demand of liver at each temperature, was constructed using an index of oxygen supply; the overall volumetric oxygen transfer coefficient, the amount of oxygen retention of perfusate and oxygen saturation. Both subnormothermic MP (SNMP, 20-25 °C) and normothermic MP (NMP, 37 °C) could maintain liver viability at a high level (94%). However, lactate metabolism of the liver during NMP was more active than that during SNMP. Furthermore, the ammonia metabolism of liver after NMP was superior to that after SNMP. Hence, NMP, which maintains the metabolic activity of the liver, is more suitable for preservation of the donor liver than SNMP, which suppresses the metabolic activity. In summary, normothermia is the optimal temperature for liver preservation, and we succeeded in constructing an NMP system that could suppress liver damage and maintain function.
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Affiliation(s)
- Kozue Yoshida
- Department of Chemical Engineering, Faculty of Engineering, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan.
| | - Shunsuke Nakamura
- Department of Chemical Engineering, Faculty of Engineering, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan.
| | - Hiroki Sakamoto
- Department of Chemical Engineering, Faculty of Engineering, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan.
| | - Mika Kondo
- Department of Chemical Engineering, Faculty of Engineering, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan.
| | - Takehiro Chouno
- Department of Chemical Engineering, Faculty of Engineering, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan.
| | - Yasuhiro Ikegami
- Department of Chemical Engineering, Faculty of Engineering, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan.
| | - Nana Shirakigawa
- Department of Chemical Engineering, Faculty of Engineering, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan.
| | - Hiroshi Mizumoto
- Department of Chemical Engineering, Faculty of Engineering, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan.
| | - Yo-Ichi Yamashita
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan.
| | - Hideo Baba
- Department of Gastroenterological Surgery, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto 860-8556, Japan.
| | - Hiroyuki Ijima
- Department of Chemical Engineering, Faculty of Engineering, Graduate School, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan.
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15
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Quader M, Torrado JF, Mangino MJ, Toldo S. Temperature and flow rate limit the optimal ex-vivo perfusion of the heart - an experimental study. J Cardiothorac Surg 2020; 15:180. [PMID: 32698846 PMCID: PMC7376943 DOI: 10.1186/s13019-020-01223-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 07/13/2020] [Indexed: 11/10/2022] Open
Abstract
Background Ex-vivo heart perfusion can be utilized to study a variety of physiologic and molecular pathways in a controlled system outside of the body. It can also be used in clinical settings such as for organ preservation before transplantation. Myocardial oxygen consumption (MVO2) correlates with energy production in the myocardium and can also be used to determine the balance between the oxygen supply and demand of the perfused heart. This study sought to determine an ex-vivo perfusion rate that matches the metabolic demands of the heart according to different temperatures and solution compositions (with and without the addition of erythrocytes), a flow below which the supply of oxygen is not sufficient to maintain an aerobic state of the perfused heart (“DCRIT”). Methods Under general anesthesia, rat hearts were procured and preserved by perfusing with the University of Wisconsin Belzer machine perfusion system (UW Belzer MPS) solution saturated with 100% O2. The key elements of this solution include supraphysiological potassium (to stop the heartbeat and reduce the cellular metabolic demand), starch, gluconate and mannitol (to maintain cell wall integrity), glucose (to sustain basal metabolism), and glutathione (to scavenge free radicals). Three groups of rat hearts (n = 7) were randomly allocated to be perfused at 15 °C, 22 °C or 37 °C, at a varying flow index (FI) starting from a minimum of 380 mL/min/100 g to less than 50 mL/min/100 g, decreasing by 50 mL/min/100 g at 10 min intervals while measuring the MVO2 at each FI. Lactate was measured from coronary sinus samples to determine the onset of tissue hypoxia/anaerobic state. Results The DCRIT at 15 °C was 99.9 ± 4.9 mL/min/100 g; however, at 22 °C and 37 °C we could not reach a DCRIT. The myocardial oxygen demand could not be met at 22 °C and 37 °C with the maximum FI above 380 mL/min/100 g even when erythrocytes (10% V/V) were added to the solution. At 15 °C, the production of lactate was evident only below the DCRIT, while at 22 °C lactate production was present at all flow indices. Conclusions Determining the DCRIT for optimal ex-vivo perfusion of the heart is necessary to ensure adequate tissue oxygenation and limit anaerobic state. Temperatures employed above 15 °C limit the efficient ex-vivo perfusion preservation of heart with the UW Belzer MPS solution.
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Affiliation(s)
- Mohammed Quader
- Department of Surgery, Virginia Commonwealth University, Richmond, VA, USA.,Department of Cardiology, VCU Pauley Heart Center, Virginia Commonwealth University, Box 980281, Richmond, VA, 23298, USA
| | - Juan Francisco Torrado
- Department of Cardiology, VCU Pauley Heart Center, Virginia Commonwealth University, Box 980281, Richmond, VA, 23298, USA.,Department of Cardiology, Clinic Hospital, School of Medicine, Republic University, Montevideo, Uruguay
| | - Martin J Mangino
- Department of Surgery, Virginia Commonwealth University, Richmond, VA, USA
| | - Stefano Toldo
- Department of Surgery, Virginia Commonwealth University, Richmond, VA, USA. .,Department of Cardiology, VCU Pauley Heart Center, Virginia Commonwealth University, Box 980281, Richmond, VA, 23298, USA.
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16
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Ikeda E, Ogawa M, Takeo M, Tsuji T. Functional ectodermal organ regeneration as the next generation of organ replacement therapy. Open Biol 2020; 9:190010. [PMID: 30836846 PMCID: PMC6451364 DOI: 10.1098/rsob.190010] [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] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
In this decade, substantial progress in the fields of developmental biology and stem cell biology has ushered in a new era for three-dimensional organ regenerative therapy. The emergence of novel three-dimensional cell manipulation technologies enables the effective mimicking of embryonic organ germ formation using the fate-determined organ-inductive potential of epithelial and mesenchymal stem cells. This advance shows great potential for the regeneration of functional organs with substitution of complete original function in situ. Organoids generated from multipotent stem cells or tissue stem cells via establishment of an organ-forming field can only partially recover original organ function owing to the size limitation; they are considered ‘mini-organs’. Nevertheless, they hold great promise to realize regenerative medicine. In particular, regeneration of a functional salivary gland and an integumentary organ system by orthotopic and heterotopic implantation of organoids clearly points to the future direction of organ regeneration research. In this review, we describe multiple strategies and recent progress in regenerating functional three-dimensional organs, focusing on ectodermal organs, and discuss their potential and future directions to achieve organ replacement therapy as a next-generation regenerative medicine.
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Affiliation(s)
- Etsuko Ikeda
- 1 Laboratory for Organ Regeneration, RIKEN Center for Biosystems Dynamics Research , Kobe, Hyogo 650-0047 , Japan
| | - Miho Ogawa
- 1 Laboratory for Organ Regeneration, RIKEN Center for Biosystems Dynamics Research , Kobe, Hyogo 650-0047 , Japan.,2 Organ Technologies Inc. , Tokyo 101-0048 , Japan
| | - Makoto Takeo
- 1 Laboratory for Organ Regeneration, RIKEN Center for Biosystems Dynamics Research , Kobe, Hyogo 650-0047 , Japan
| | - Takashi Tsuji
- 1 Laboratory for Organ Regeneration, RIKEN Center for Biosystems Dynamics Research , Kobe, Hyogo 650-0047 , Japan.,2 Organ Technologies Inc. , Tokyo 101-0048 , Japan
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17
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Zhu JY, Suarez SA, Thurgood P, Nguyen N, Mohammed M, Abdelwahab H, Needham S, Pirogova E, Ghorbani K, Baratchi S, Khoshmanesh K. Reconfigurable, Self-Sufficient Convective Heat Exchanger for Temperature Control of Microfluidic Systems. Anal Chem 2019; 91:15784-15790. [PMID: 31726823 DOI: 10.1021/acs.analchem.9b04066] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Here, we demonstrate a modular, reconfigurable, and self-sufficient convective heat exchanger for regulation of temperature in microfluidic systems. The heat exchanger consists of polymer tubes wrapped around a plastic pole and fully embedded in an elastomer block, which can be easily mounted onto the microfluidic structure. It is compatible with various microfluidic geometries and materials. Miniaturized, battery-powered piezoelectric pumps are utilized to drive the heat carrying liquid through the heat exchanger at desired flow rates and temperatures. Customized temperature profiles can be generated by changing the configuration of the heat exchanger with respect to the microfluidic structure. Tailored dynamic temperature profiles can be generated by changing the temperature of the heat carrying liquid in successive cycles. This feature is used to study the calcium signaling of endothelial cells under successive temperature cycles of 24 to 37 °C. The versatility, simplicity, and self-sufficiency of the heat exchanger makes it suitable for various microfluidic based cellular assays.
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Affiliation(s)
- Jiu Yang Zhu
- School of Engineering , RMIT University , Melbourne , VIC 3001 , Australia
| | | | - Peter Thurgood
- School of Engineering , RMIT University , Melbourne , VIC 3001 , Australia
| | - Ngan Nguyen
- School of Engineering , RMIT University , Melbourne , VIC 3001 , Australia
| | - Mokhaled Mohammed
- School of Engineering , RMIT University , Melbourne , VIC 3001 , Australia
| | - Haneen Abdelwahab
- School of Engineering , RMIT University , Melbourne , VIC 3001 , Australia
| | - Scott Needham
- Leading Technology Group , Camberwell , VIC 3124 , Australia
| | - Elena Pirogova
- School of Engineering , RMIT University , Melbourne , VIC 3001 , Australia
| | - Kamran Ghorbani
- School of Engineering , RMIT University , Melbourne , VIC 3001 , Australia
| | - Sara Baratchi
- School of Health and Biomedical Sciences , RMIT University , Bundoora , VIC 3083 , Australia
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18
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Bellini MI, Yiu J, Nozdrin M, Papalois V. The Effect of Preservation Temperature on Liver, Kidney, and Pancreas Tissue ATP in Animal and Preclinical Human Models. J Clin Med 2019; 8:jcm8091421. [PMID: 31505880 PMCID: PMC6780500 DOI: 10.3390/jcm8091421] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 08/30/2019] [Accepted: 09/02/2019] [Indexed: 02/06/2023] Open
Abstract
The recent advances in machine perfusion (MP) technology involve settings ranging between hypothermic, subnormothermic, and normothermic temperatures. Tissue level adenosine triphosphate (ATP) is a long-established marker of viability and functionality and is universal for all organs. In the midst of a growing number of complex clinical parameters for the quality assessment of graft prior to transplantation, a revisit of ATP may shed light on the underlying reconditioning mechanisms of different perfusion temperatures in the form of restoration of metabolic and energy status. This article aims to review and critically analyse animal and preclinical human studies (discarded grafts) during MP of three abdominal organs (liver, kidney, and pancreas) in which ATP was a primary endpoint. A selective review of recent novel reconditioning approaches relevant to mitigation of graft ischaemia-reperfusion injury via MP and for different perfusion temperatures was also conducted. With a current reiterated interest for oxygenation during MP, a re-introduction of tissue ATP levels may be valuable for graft viability assessment prior to transplantation. Further studies may help delineate the benefits of selective perfusion temperatures on organs viability.
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Affiliation(s)
| | - Janice Yiu
- School of Medicine, University College London, London WC1E 6BT, UK
| | - Mikhail Nozdrin
- School of Medicine, Imperial College London, London SW72AZ, UK
| | - Vassilios Papalois
- Renal and Transplant Directorate, Imperial College Healthcare NHS Trust, London W120HS, UK
- Department of Surgery and Cancer, Imperial College London, London SW72AZ, UK
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19
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Masano Y, Yagi S, Miyachi Y, Okumura S, Kaido T, Haga H, Kobayashi E, Uemoto S. Auxiliary xenotransplantation as an in vivo bioreactor-Development of a transplantable liver graft from a tiny partial liver. Xenotransplantation 2019; 26:e12545. [PMID: 31400029 DOI: 10.1111/xen.12545] [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: 11/27/2018] [Revised: 05/25/2019] [Accepted: 06/27/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND We established a completely novel method of auxiliary xenogeneic partial liver transplantation and examined whether liver grafts procured from Syrian hamsters regenerated in nude rats, which were used as in vivo bioreactors. METHODS The hamsters and the rats were all males (n = 10). Partial liver grafts from hamsters were transplanted into nude rats in an auxiliary manner. We evaluated liver graft injury, rejection, and regeneration during 7 days after auxiliary xenogeneic partial liver transplantation. RESULTS All rats survived until sacrifice on post-operative day (POD) 1, 3, and 7. HE-staining showed normal at POD1, mild periportal edema, and slight bile duct and venous endothelial inflammation at POD3, and moderate acute cellular rejection at POD7 without parenchymal necrosis. The liver regeneration rates at POD3 and 7 were 1.54 ± 0.23 and 2.54 ± 0.43, respectively. The Ki-67 labeling index was also elevated at POD3 (27.5 ± 4.1%). Serum HGF and VEGF were elevated at POD1 and 3. ATP levels of liver grafts recovered at POD7. CONCLUSIONS These results revealed that with appropriate immunosuppressive therapy, partial liver graft regeneration occurred in a xenogeneic animal, which suggests liver grafts regenerated in xenogeneic environments, such as an in vivo bioreactor, have potential to be transplantable liver grafts for humans.
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Affiliation(s)
- Yuki Masano
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shintaro Yagi
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yosuke Miyachi
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinya Okumura
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Toshimi Kaido
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hironori Haga
- Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan
| | - Eiji Kobayashi
- Department of Organ Fabrication, Keio University School of Medicine, Tokyo, Japan
| | - Shinji Uemoto
- Division of Hepato-Biliary-Pancreatic and Transplant Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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20
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Hattori K, Ishikawa H, Sakauchi C, Takayanagi S, Naguro I, Ichijo H. Cold stress-induced ferroptosis involves the ASK1-p38 pathway. EMBO Rep 2017; 18:2067-2078. [PMID: 28887319 DOI: 10.15252/embr.201744228] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 07/19/2017] [Accepted: 07/31/2017] [Indexed: 01/22/2023] Open
Abstract
A wide variety of cell death mechanisms, such as ferroptosis, have been proposed in mammalian cells, and the classification of cell death attracts global attention because each type of cell death has the potential to play causative roles in specific diseases. However, the precise molecular mechanisms leading to cell death are poorly understood, particularly in ferroptosis. Here, we show that continuous severe cold stress induces ferroptosis and the ASK1-p38 MAPK pathway in multiple cell lines. The activation of the ASK1-p38 pathway is mediated by critical determinants of ferroptosis: MEK activity, iron ions, and lipid peroxide. The chemical compound erastin, a potent ferroptosis inducer, also activates the ASK1-p38 axis downstream of lipid peroxide accumulation and leads to ASK1-dependent cell death in a cell type-specific manner. These lines of evidence provide mechanistic insight into ferroptosis, a type of regulated necrosis.
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Affiliation(s)
- Kazuki Hattori
- The Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Hiroyuki Ishikawa
- The Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Chihiro Sakauchi
- The Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Saki Takayanagi
- The Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Isao Naguro
- The Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Hidenori Ichijo
- The Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
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21
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Abstract
The demand of donor livers for transplantation exceeds the supply. In an attempt to maximize the number of potentially usable donor livers, several centers are exploring the role of machine perfusion. This review provides an update on machine perfusion strategies and basic concepts, based on current clinical issues, and discuss challenges, including currently used biomarkers for assessing the quality and viability of perfused organs. The potential benefits of machine perfusion on immunogenicity and the consequences on post-operative immunosuppression management are discussed.
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22
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"In-Site" Perfusion Technique for Rinse Solution in Liver Transplantation. Transplant Direct 2017; 3:e141. [PMID: 28405597 PMCID: PMC5381734 DOI: 10.1097/txd.0000000000000656] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 12/02/2016] [Indexed: 11/26/2022] Open
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23
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Yang J, Pan C, Sui X, Cai N, Zhang J, Zhu Y, Zhang L. The hypothermic preservation of mammalian cells with assembling extracellular-matrix-mimetic microparticles. J Mater Chem B 2017; 5:1535-1541. [DOI: 10.1039/c6tb03206k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reversible assembly of magnetic alginate microparticles could mimic the extracellular matrix for efficient and facile hypothermic cell preservation.
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Affiliation(s)
- Jing Yang
- Department of Biochemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Chao Pan
- Department of Biochemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Xiaojie Sui
- Department of Biochemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Nana Cai
- Department of Biochemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Jiamin Zhang
- Department of Biochemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Yingnan Zhu
- Department of Biochemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Lei Zhang
- Department of Biochemical Engineering
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- P. R. China
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