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Pancreas Preservation with a Neutrophil Elastase Inhibitor, Alvelestat, Contributes to Improvement of Porcine Islet Isolation and Transplantation. J Clin Med 2022; 11:jcm11154290. [PMID: 35893379 PMCID: PMC9330829 DOI: 10.3390/jcm11154290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/13/2022] [Accepted: 07/21/2022] [Indexed: 12/14/2022] Open
Abstract
For pancreatic islet transplantation, pancreas procurement, preservation, and islet isolation destroy cellular and non-cellular components and activate components such as resident neutrophils, which play an important role in the impairment of islet survival. It has been reported that inhibitors of neutrophil elastase (NE), such as sivelestat and α1-antitrypsin, could contribute to improvement of islet isolation and transplantation. In this study, we investigated whether pancreatic preservation with alvelestat, a novel NE inhibitor, improves porcine islet yield and function. Porcine pancreata were preserved with or without 5 μM alvelestat for 18 h, and islet isolation was performed. The islet yields before and after purification were significantly higher in the alvelestat (+) group than in the alvelestat (−) group. After islet transplantation into streptozotocin-induced diabetic mice, blood glucose levels reached the normoglycemic range in 55% and 5% of diabetic mice in the alvelestat (+) and alvelestat (−) groups, respectively. These results suggest that pancreas preservation with alvelestat improves islet yield and graft function and could thus serve as a novel clinical strategy for improving the outcome of islet transplantation.
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Nakashima Y, Iguchi H, Takakura K, Nakamura Y, Izumi K, Koba N, Haneda S, Tsukahara M. Adhesion Characteristics of Human Pancreatic Islets, Duct Epithelial Cells, and Acinar Cells to a Polymer Scaffold. Cell Transplant 2022; 31:9636897221120500. [PMID: 36062469 PMCID: PMC9449504 DOI: 10.1177/09636897221120500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We reported in 2018 that among several extracellular matrices, fibronectin, type I collagen, type IV collagen, laminin I, fibrinogen, and bovine serum albumin, fibronectin is particularly useful for adhesion of porcine pancreatic tissue. Subsequently, we developed a technology that enables the chemical coating of the constituent motifs of fibronectin onto cell culture dishes. In this experiment, we used islets (purity ≥ 90%), duct epithelial cells (purity ≥ 60%), and acinar cells (purity ≥ 99%) isolated from human pancreas according to the Edmonton protocol published in 2000 and achieved adhesion to the constituent motifs of fibronectin. A solution including cGMP Prodo Islet Media was used as the assay solution. In islets, adhesion was enhanced with the constitutive motifs of fibronectin compared with uncoated islets. In the functional evaluation of islets, insulin mRNA expression and insulin secretion were enhanced by the constitutive motif of fibronectin compared with non-coated islets. The stimulation index was comparable between non-coated islets and fibronectin motifs. In duct epithelial cells, adhesion was mildly promoted by the fibronectin component compared with non-coated component, while in acinar cells, adhesion was inhibited by the fibronectin component compared with the non-coated component. These data suggest that the constitutive motifs of fibronectin are useful for the adhesion of islets and duct epithelial cells.
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Affiliation(s)
- Yoshiki Nakashima
- Center for iPS Cell Research and Application Foundation, Facility for iPS Cell Therapy, Kyoto University, Kyoto, Japan
| | - Hiroki Iguchi
- R&D Center Corporate Advanced Technology Institute Life Science Development Center, Sekisui Chemical Co., Ltd., Osaka, Japan
| | - Kenta Takakura
- R&D Center Corporate Advanced Technology Institute Life Science Development Center, Sekisui Chemical Co., Ltd., Osaka, Japan
| | - Yuta Nakamura
- R&D Center Corporate Advanced Technology Institute Life Science Development Center, Sekisui Chemical Co., Ltd., Osaka, Japan
| | | | | | - Satoshi Haneda
- R&D Center Corporate Advanced Technology Institute Life Science Development Center, Sekisui Chemical Co., Ltd., Osaka, Japan
| | - Masayoshi Tsukahara
- Center for iPS Cell Research and Application Foundation, Facility for iPS Cell Therapy, Kyoto University, Kyoto, Japan
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Kawamoto K, Ohashi T, Konno M, Nishida N, Koseki J, Matsui H, Sakai D, Kudo T, Eguchi H, Satoh T, Doki Y, Mori M, Ishii H. Cell-free culture conditioned medium elicits pancreatic β cell lineage-specific epigenetic reprogramming in mice. Oncol Lett 2018; 16:3255-3259. [PMID: 30127922 DOI: 10.3892/ol.2018.9008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 03/09/2017] [Indexed: 12/19/2022] Open
Abstract
There are several obstacles to overcome prior to achieving cellular reprogramming of pancreatic β cells in vitro and in vivo. The present study demonstrated that the transfer of epigenetic phenotypes was achieved in the cell-free conditioned medium (CM) of pancreatic insulinoma MIN6 cell cultures. The comparison of a subpopulation of MIN6, m14 and m9 cells indicated that MIN6-m14 cells were more prone to cellular reprogramming. Epigenetic profiling revealed that the transcription factor pancreas/duodenum homeobox protein 1 (Pdx1) was differentially associated among the clones. The culture of differentiated adipocytes in the CM of MIN6-m14 cells resulted in the induction of insulin mRNA expression, and was accompanied by epigenetic events of Pdx1 binding. The epigenetic profiling indicated that Pdx1 is preferentially associated with a previously uncharacterized region of the endoplasmic reticulum (ER) disulfide oxidase, ER oxidoreductin 1 gene. Therefore, the results of the present study indicated that the CM of MIN6 cells was able to induce a pancreatic β cell-like phenotype in differentiated adipocytes. These data provide additional support for the utility of cell-free CM for cellular reprogramming.
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Affiliation(s)
- Koichi Kawamoto
- Department of Gastroenterological Surgery, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan.,Department of Cancer Frontier Science, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan
| | - Tomofumi Ohashi
- Department of Gastroenterological Surgery, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan
| | - Masamitsu Konno
- Department of Cancer Frontier Science, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan
| | - Naohiro Nishida
- Department of Gastroenterological Surgery, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan.,Department of Cancer Frontier Science, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan
| | - Jun Koseki
- Department of Cancer Profiling Discovery, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan
| | - Hidetoshi Matsui
- Department of Mathematical Sciences, Faculty of Mathematics, Kyushu University, Fukuoka 819-0395, Japan
| | - Daisuke Sakai
- Department of Cancer Frontier Science, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan
| | - Toshihiro Kudo
- Department of Cancer Frontier Science, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan
| | - Hidetoshi Eguchi
- Department of Gastroenterological Surgery, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan
| | - Taroh Satoh
- Department of Cancer Frontier Science, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan
| | - Yuichiro Doki
- Department of Gastroenterological Surgery, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan.,Department of Cancer Frontier Science, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan.,Department of Cancer Profiling Discovery, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan
| | - Masaki Mori
- Department of Gastroenterological Surgery, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan.,Department of Cancer Frontier Science, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan.,Department of Cancer Profiling Discovery, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan
| | - Hideshi Ishii
- Department of Cancer Frontier Science, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan.,Department of Cancer Profiling Discovery, Osaka University School of Medicine, Suita, Osaka 565-0871, Japan
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Yin N, Chen T, Yu Y, Han Y, Yan F, Zheng Z, Chen Z. Facile mechanical shaking method is an improved isolation approach for islet preparation and transplantation. Exp Ther Med 2016; 12:3658-3664. [PMID: 28101160 PMCID: PMC5228319 DOI: 10.3892/etm.2016.3844] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 09/15/2016] [Indexed: 12/13/2022] Open
Abstract
Successful islet isolation is crucial for islet transplantation and cell treatment for type 1 diabetes. Current isolation methods are able to obtain 500-1,000 islets per rat, which results in a waste of ≥50% of total islets. In the present study, a facile mechanical shaking method for improving islet yield (up to 1,500 per rat) was developed and summarized, which was demonstrated to be more effective than the existing well-established stationary method. The present results showed that isolated islets have a maximum yield of 1,326±152 when shaking for 15 min for the fully-cannulated pancreas. For both fully-cannulated and half-cannulated pancreas in the presence of rat DNAse inhibitor, the optimal shaking time was amended to 20 min with a further increased yield of 1,344±134 and 1,286±124 islets, respectively. Furthermore, the majority of the isolated islets were morphologically intact with a well-defined surface and almost no central necrotic zone, which suggested that the condition of islets obtained via the mechanical shaking method was consistent with the stationary method. Islet size distribution was also calculated and it was demonstrated that islets from the stationary method exhibited the same size distribution as the non-cannulated group, which had more larger islets than the fully-cannulated and half-cannulated groups isolated via the shaking method. In addition, the results of glucose challenge showed that the refraction index of each group was >2.5, which indicated the well-preserved function of isolated islets. Furthermore, the transplanted islets exhibited a therapeutic effect after 1 day of transplantation; however, they failed to control blood glucose levels after ~7 days of transplantation. In conclusion, these results demonstrated that the facile mechanical shaking method may markedly improve the yield of rat islet isolation, and in vitro and in vivo investigation demonstrated the well-preserved function of isolated islets in the control of blood glucose. Therefore, the facile mechanical shaking method may be an alternative improved procedure to obtain higher islet yield for islet preparation and transplantation in the treatment of type 1 diabetes.
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Affiliation(s)
- Nina Yin
- Department of Anatomy, College of Basic Medicine, Hubei University of Chinese Medicine, Wuhan, Hubei 430065, P.R. China
| | - Tao Chen
- Department of Anatomy, College of Basic Medicine, Hubei University of Chinese Medicine, Wuhan, Hubei 430065, P.R. China
| | - Yuling Yu
- Department of Anatomy, College of Basic Medicine, Hubei University of Chinese Medicine, Wuhan, Hubei 430065, P.R. China
| | - Yongming Han
- Department of Anatomy, College of Basic Medicine, Hubei University of Chinese Medicine, Wuhan, Hubei 430065, P.R. China
| | - Fei Yan
- Department of Anatomy, College of Basic Medicine, Hubei University of Chinese Medicine, Wuhan, Hubei 430065, P.R. China
| | - Zhou Zheng
- Department of Anatomy, College of Basic Medicine, Hubei University of Chinese Medicine, Wuhan, Hubei 430065, P.R. China
| | - Zebin Chen
- Department of Acupuncture and Moxibustion, College of Acupuncture and Orthopedics, Hubei University of Chinese Medicine, Wuhan, Hubei 430065, P.R. China; Hubei Provincial Collaborative Innovation Center of Preventive Treatment by Acupuncture and Moxibustion, Hubei University of Chinese Medicine, Wuhan, Hubei 430065, P.R. China
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Yokoi S, Murakami M, Morikawa M, Goi T, Yamaguchi A, Terada S. Sericin in the isolating solution improves the yield of islets isolated from the pancreas. Cytotechnology 2016; 68:2491-2502. [PMID: 27126060 PMCID: PMC5101320 DOI: 10.1007/s10616-016-9970-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 04/15/2016] [Indexed: 11/26/2022] Open
Abstract
Approximately half of the transplantable pancreatic islet tissue is lost during isolation, including the digestion and purification steps. Modifying the isolation method could increase the yield. This would enable the one donor-one recipient concept and improve the therapeutic effects of islet transplantation. This study aims to improve islet transplantation by increasing the yield of islets from the pancreas, both the number of islets and their size. Therefore, we used a sericin-containing isolating solution. Rat pancreatic islets were isolated by collagenase digestion and hand picking. We refer to islets isolated with or without sericin in the isolation solution as the sericin and control group, respectively. Volume yield, endocrine function, and islet morphology were compared between the groups. Histological distribution of sericin was evaluated by immunofluorescence staining to examine its mechanism of action in pancreatic islets. The pancreatic islet yield in the sericin group was significantly higher than that in the control group. The endocrine function of islets in the sericin group was comparable to that of islets isolated by conventional methods. Sericin adhered to the surface of isolated pancreatic islets and colocalized with E-cadherin, a cell membrane protein, which might explain the cytoprotective effects of sericin. The islet morphology tended to be better preserved in the sericin group. Sericin could prevent cytoarchitectural damage during the isolation and purification process, resulting in increased pancreatic islet yield. This suggests that sericin could contribute to islet therapy by enhancing the stability of islets.
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Affiliation(s)
- Shigehiro Yokoi
- First Department of Surgery, School of Medicine, Faculty of Medical Sciences, University of Fukui, 23-3 Matsuokashimoaizuki, eiheiji-cho, Yoshida-gun, Fukui, 910-1193, Japan.
| | - Makoto Murakami
- First Department of Surgery, School of Medicine, Faculty of Medical Sciences, University of Fukui, 23-3 Matsuokashimoaizuki, eiheiji-cho, Yoshida-gun, Fukui, 910-1193, Japan
| | - Mitsuhiro Morikawa
- First Department of Surgery, School of Medicine, Faculty of Medical Sciences, University of Fukui, 23-3 Matsuokashimoaizuki, eiheiji-cho, Yoshida-gun, Fukui, 910-1193, Japan
| | - Takanori Goi
- First Department of Surgery, School of Medicine, Faculty of Medical Sciences, University of Fukui, 23-3 Matsuokashimoaizuki, eiheiji-cho, Yoshida-gun, Fukui, 910-1193, Japan
| | - Akio Yamaguchi
- First Department of Surgery, School of Medicine, Faculty of Medical Sciences, University of Fukui, 23-3 Matsuokashimoaizuki, eiheiji-cho, Yoshida-gun, Fukui, 910-1193, Japan
| | - Satoshi Terada
- Department of Applied Chemistry and Biotechnology, University of Fukui, 3-9-1 Bunkyou, Fukui, Fukui, 910-8507, Japan
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