1
|
Glial cell line-derived neurotrophic factor enhances human islet posttransplantation survival. Transplantation 2011; 92:745-51. [PMID: 21869742 DOI: 10.1097/tp.0b013e31822bc95a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Development of pretransplantation islet culture strategies that preserve or enhance β-cell viability would eliminate the requirement for the large numbers of islets needed to restore insulin independence in type 1 diabetes patients. We investigated whether glial cell line-derived neurotrophic factor (GDNF) could improve human islet survival and posttransplantation function in diabetic mice. METHODS Human islets were cultured in medium supplemented with or without GDNF (100 ng/mL) and in vitro islet survival and function assessed by analyzing β-cell apoptosis and glucose stimulated insulin release. In vivo effects of GDNF were assessed in streptozotocin-induced diabetic nude mice transplanted under the kidney capsule with 2000 islet equivalents of human islets precultured in medium supplemented with or without GDNF. RESULTS In vitro, human islets cultured for 2 to 10 days in medium supplemented with GDNF showed lower β-cell death, increased Akt phosphorylation, and higher glucose-induced insulin secretion than islets cultured in vehicle. Human islets precultured in medium supplemented with GDNF restored more diabetic mice to normoglycemia and for a longer period after transplantation than islets cultured in vehicle. CONCLUSIONS Our study shows that GDNF has beneficial effects on human islet survival and could be used to improve islet posttransplantation survival.
Collapse
|
2
|
Jahansouz C, Jahansouz C, Kumer SC, Brayman KL. Evolution of β-Cell Replacement Therapy in Diabetes Mellitus: Islet Cell Transplantation. J Transplant 2011; 2011:247959. [PMID: 22013505 PMCID: PMC3195999 DOI: 10.1155/2011/247959] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2011] [Accepted: 08/08/2011] [Indexed: 12/12/2022] Open
Abstract
Diabetes mellitus remains one of the leading causes of morbidity and mortality worldwide. According to the Centers for Disease Control and Prevention, approximately 23.6 million people in the United States are affected. Of these individuals, 5 to 10% have been diagnosed with Type 1 diabetes mellitus (T1DM), an autoimmune disease. Although it often appears in childhood, T1DM may manifest at any age, leading to significant morbidity and decreased quality of life. Since the 1960s, the surgical treatment for diabetes mellitus has evolved to become a viable alternative to insulin administration, beginning with pancreatic transplantation. While islet cell transplantation has emerged as another potential alternative, its role in the treatment of T1DM remains to be solidified as research continues to establish it as a truly viable alternative for achieving insulin independence. In this paper, the historical evolution, procurement, current status, benefits, risks, and ongoing research of islet cell transplantation are explored.
Collapse
Affiliation(s)
- Cyrus Jahansouz
- School of Medicine, University of Virginia, Charlottesville, VA 22102, USA
| | | | | | | |
Collapse
|
3
|
Daoud J, Rosenberg L, Tabrizian M. Pancreatic Islet Culture and Preservation Strategies: Advances, Challenges, and Future Outlook. Cell Transplant 2010; 19:1523-35. [DOI: 10.3727/096368910x515872] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Postisolation islet survival is a critical step for achieving successful and efficient islet transplantation. This involves the optimization of islet culture in order to prolong survival and functionality in vitro. Many studies have focused on different strategies to culture pancreatic islets in vitro through manipulation of culture media, surface modified substrates, and the use of various techniques such as encapsulation, embedding, scaffold, and bioreactor culture strategies. This review aims to present and discuss the different methodologies employed to optimize pancreatic islet culture in vitro as well as address their respective advantages and drawbacks.
Collapse
Affiliation(s)
- Jamal Daoud
- Department of Biomedical Engineering, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - Lawrence Rosenberg
- Department of Surgery, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - Maryam Tabrizian
- Department of Biomedical Engineering, Faculty of Medicine, McGill University, Montreal, QC, Canada
| |
Collapse
|
4
|
Kopska T, Fürstova V, Kovar J. Modified method for isolation of langerhans islets from mice. Transplant Proc 2009; 40:3611-4. [PMID: 19100451 DOI: 10.1016/j.transproceed.2008.04.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2007] [Revised: 03/14/2008] [Accepted: 04/10/2008] [Indexed: 10/21/2022]
Abstract
Successful isolation of Langerhans islets is a crucial prerequisite for their experimental or possible clinical use such as transplantation. Centrifugation in a Ficoll gradient is a common step used for separation of Langerhans islets from exocrine tissue. However, islets have been reported to be negatively affected by employing Ficoll gradients. Therefore, the aim of this study was to modify the isolation procedure by excluding Ficoll gradient centrifugation to obtain a similar or better yield of viable, functional islets. In our modification of the isolation procedure, the separation of islets from exocrine tissue was based on their sedimentation rate combined with their differential ability to attach to the surface of culture dishes for suspension cells. The resulting purity of islets facilitated their handpicking from the suspension. The mean yield was 900 viable, insulin-producing islets per mouse, which was comparable to or even higher than the yield in commonly used protocols. Our modification of the isolation method may be useful when centrifugation in Ficoll gradient is undesirable due to potential toxicity.
Collapse
Affiliation(s)
- T Kopska
- Division of Cell and Molecular Biology & Centre for Research of Diabetes, Metabolism and Nutrition, Third Faculty of Medicine, Charles University in Prague, Prague, Czech Republic.
| | | | | |
Collapse
|
5
|
Mancarella R, Del Guerra S, Masini M, Bugliani M, Valgimigli L, Pedulli GF, Paolini M, Canistro D, Armando A, Soleti A, Filipponi F, Mosca F, Boggi U, Del Prato S, Marchetti P, Lupi R. Beneficial Effect of the Nonpeptidyl Low Molecular Weight Radical Scavenger IAC on Cultured Human Islet Function. Cell Transplant 2008; 17:1271-6. [DOI: 10.3727/096368908787236639] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
We examined a possible protective effect of the nonpeptidyl low molecular weight radical scavenger IAC [bis(1-hydroxy-2,2,6,6-tetramethyl-4-piperidinyl)decanedioate di-hydrochloride] on isolated human islet cells against isolation and culture oxidative stress. Islets isolated from pancreases of nondiabetic multiorgan donors by collagenase digestion were purified by density gradient centrifugation. After the isolation, islets were either exposed or not exposed for 7 days to 10 μmol/L IAC. We found that IAC markedly reduced oxidative stress and ameliorated islets function. These results suggest that the use of IAC could be an interesting pharmacological approach for the treatment of the islets before transplantation.
Collapse
Affiliation(s)
- Rita Mancarella
- Department of Endocrinology and Metabolism, Metabolic Unit, University of Pisa, Pisa, Italy
| | - Silvia Del Guerra
- Department of Endocrinology and Metabolism, Metabolic Unit, University of Pisa, Pisa, Italy
| | - Matilde Masini
- Department of Experimental Pathology, University of Pisa, Pisa, Italy
| | - Marco Bugliani
- Department of Endocrinology and Metabolism, Metabolic Unit, University of Pisa, Pisa, Italy
| | - Luca Valgimigli
- Department of Organic Chemistry “A. Mangini”, University of Bologna, Bologna, Italy
| | - Gian Franco Pedulli
- Department of Organic Chemistry “A. Mangini”, University of Bologna, Bologna, Italy
| | - Moreno Paolini
- Department of Pharmacology, Molecular Toxicology Unit, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Donatella Canistro
- Department of Pharmacology, Molecular Toxicology Unit, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | | | | | - Franco Filipponi
- Department of Oncology and Transplant Surgery, University of Pisa, Pisa, Italy
| | - Franco Mosca
- Department of Oncology and Transplant Surgery, University of Pisa, Pisa, Italy
| | - Ugo Boggi
- Department of Oncology and Transplant Surgery, University of Pisa, Pisa, Italy
| | - Stefano Del Prato
- Department of Endocrinology and Metabolism, Metabolic Unit, University of Pisa, Pisa, Italy
| | - Piero Marchetti
- Department of Endocrinology and Metabolism, Metabolic Unit, University of Pisa, Pisa, Italy
| | - Roberto Lupi
- Department of Endocrinology and Metabolism, Metabolic Unit, University of Pisa, Pisa, Italy
| |
Collapse
|