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Qi M, Lacik I, Kolláriková G, Strand BL, Formo K, Wang Y, Marchese E, Mendoza-Elias JE, Kinzer KP, Gatti F, Paushter D, Patel S, Oberholzer J. A recommended laparoscopic procedure for implantation of microcapsules in the peritoneal cavity of non-human primates. J Surg Res 2011; 168:e117-23. [PMID: 21435661 PMCID: PMC3661273 DOI: 10.1016/j.jss.2011.01.040] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2010] [Revised: 01/11/2011] [Accepted: 01/20/2011] [Indexed: 11/15/2022]
Abstract
BACKGROUND The anatomical spatial distribution of microencapsulated islets transplanted into the peritoneal cavity of large animals remains a relatively unexplored area of study. In this study, we developed a new implantation approach using laparoscopy in order to avoid microcapsule amalgamation. This approach constitutes a clinically relevant method, which can be used to evaluate the distribution and in vivo biocompatibility of various types of transplanted microcapsules in the future. MATERIALS AND METHODS Two healthy baboons were implanted intraperitoneally with microencapsulated islets through mini-laparotomy and observed at 76 d after implantation. Nine baboons underwent laparoscopic implantation of approximately 80,000 empty microcapsules. Microcapsule distribution was observed by laparoscopic camera during and after implantation at 1, 2, and 4 wk. At each time point, microcapsules were retrieved and evaluated with brightfield microscopy and histologic analysis. RESULTS Mini-laparotomic implantation resulted in microcapusle aggregation in both baboons. In contrast, laparoscopic implantation resulted in even distribution of microcapsules throughout the peritoneum without sedimentation to the Douglas space in all animals. In eight out of nine animals, retrieved microcapsules were evenly distributed in the peritoneal cavity and presented with no pericapsular overgrowth and easily washed out during laparoscopic procedure. The one exception was attributed to microcapsule contamination with blood from the abdominal wall following trocar insertion. CONCLUSIONS Laparoscopic implantation of microcapsules in non-human primates can be successfully performed and prevents microcapsule aggregation. Given the current widespread clinical application of laparoscopy, we propose that this presented laparoscopy technique could be applied in future clinical trials of microencapsulated islet transplantation.
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Affiliation(s)
- Meirigeng Qi
- Department of Surgery, University of Illinois at Chicago, Illinois, USA
| | - Igor Lacik
- Department of Special Polymers and Biopolymers, Polymer Institute of the Slovak Academy of Sciences, Bratislava, Slovakia
| | - Gabriela Kolláriková
- Department of Special Polymers and Biopolymers, Polymer Institute of the Slovak Academy of Sciences, Bratislava, Slovakia
| | - Berit L Strand
- Department of Biotechnology, University of Science and Technology (NTNU), Trondheim, Norway
| | - Kjetil Formo
- Department of Surgery, University of Illinois at Chicago, Illinois, USA
| | - Yong Wang
- Department of Surgery, University of Illinois at Chicago, Illinois, USA
| | - Enza Marchese
- Department of Surgery, University of Illinois at Chicago, Illinois, USA
| | | | - Katie P. Kinzer
- Department of Surgery, University of Illinois at Chicago, Illinois, USA
| | - Francesca Gatti
- Department of Surgery, University of Illinois at Chicago, Illinois, USA
| | - Daniel Paushter
- Department of Surgery, University of Illinois at Chicago, Illinois, USA
| | - Sonny Patel
- Department of Surgery, University of Illinois at Chicago, Illinois, USA
| | - Jose Oberholzer
- Department of Surgery, University of Illinois at Chicago, Illinois, USA
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Berman DM, Willman MA, Han D, Kleiner G, Kenyon NM, Cabrera O, Karl JA, Wiseman RW, O'Connor DH, Bartholomew AM, Kenyon NS. Mesenchymal stem cells enhance allogeneic islet engraftment in nonhuman primates. Diabetes 2010; 59:2558-68. [PMID: 20622174 PMCID: PMC3279532 DOI: 10.2337/db10-0136] [Citation(s) in RCA: 157] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE To test the graft-promoting effects of mesenchymal stem cells (MSCs) in a cynomolgus monkey model of islet/bone marrow transplantation. RESEARCH DESIGN AND METHODS Cynomolgus MSCs were obtained from iliac crest aspirate and characterized through passage 11 for phenotype, gene expression, differentiation potential, and karyotype. Allogeneic donor MSCs were cotransplanted intraportally with islets on postoperative day (POD) 0 and intravenously with donor marrow on PODs 5 and 11. Recipients were followed for stabilization of blood glucose levels, reduction of exogenous insulin requirement (EIR), C-peptide levels, changes in peripheral blood T regulatory cells, and chimerism. Destabilization of glycemia and increases in EIR were used as signs of rejection; additional intravenous MSCs were administered to test the effect on reversal of rejection. RESULTS MSC phenotype and a normal karyotype were observed through passage 11. IL-6, IL-10, vascular endothelial growth factor, TGF-β, hepatocyte growth factor, and galectin-1 gene expression levels varied among donors. MSC treatment significantly enhanced islet engraftment and function at 1 month posttransplant (n = 8), as compared with animals that received islets without MSCs (n = 3). Additional infusions of donor or third-party MSCs resulted in reversal of rejection episodes and prolongation of islet function in two animals. Stable islet allograft function was associated with increased numbers of regulatory T-cells in peripheral blood. CONCLUSIONS MSCs may provide an important approach for enhancement of islet engraftment, thereby decreasing the numbers of islets needed to achieve insulin independence. Furthermore, MSCs may serve as a new, safe, and effective antirejection therapy.
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Affiliation(s)
- Dora M. Berman
- Diabetes Research Institute, Miller School of Medicine, University of Miami, Miami, Florida
- Department of Surgery, Miller School of Medicine, University of Miami, Miami, Florida
| | - Melissa A. Willman
- Diabetes Research Institute, Miller School of Medicine, University of Miami, Miami, Florida
| | - Dongmei Han
- Diabetes Research Institute, Miller School of Medicine, University of Miami, Miami, Florida
| | - Gary Kleiner
- Department of Surgery, Miller School of Medicine, University of Miami, Miami, Florida
- Department of Pediatrics, Miller School of Medicine, University of Miami, Miami, Florida
| | - Norman M. Kenyon
- Diabetes Research Institute, Miller School of Medicine, University of Miami, Miami, Florida
- Department of Surgery, Miller School of Medicine, University of Miami, Miami, Florida
| | - Over Cabrera
- Diabetes Research Institute, Miller School of Medicine, University of Miami, Miami, Florida
| | - Julie A. Karl
- Wisconsin National Primate Research Center, University of Wisconsin-Madison, Madison, Wisconsin
| | - Roger W. Wiseman
- Wisconsin National Primate Research Center, University of Wisconsin-Madison, Madison, Wisconsin
| | - David H. O'Connor
- Wisconsin National Primate Research Center, University of Wisconsin-Madison, Madison, Wisconsin
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, Wisconsin
| | | | - Norma S. Kenyon
- Diabetes Research Institute, Miller School of Medicine, University of Miami, Miami, Florida
- Department of Surgery, Miller School of Medicine, University of Miami, Miami, Florida
- Department of Microbiology and Immunology, Miller School of Medicine, University of Miami, Miami, Florida
- Department of Biomedical Engineering, University of Miami, Miami, Florida
- Corresponding author: Norma S. Kenyon,
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Exley MA, Tahir SM, Cheng O, Shaulov A, Joyce R, Avigan D, Sackstein R, Balk SP. A major fraction of human bone marrow lymphocytes are Th2-like CD1d-reactive T cells that can suppress mixed lymphocyte responses. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2001; 167:5531-4. [PMID: 11698421 DOI: 10.4049/jimmunol.167.10.5531] [Citation(s) in RCA: 124] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Murine bone marrow (BM) NK T cells can suppress graft-vs-host disease, transplant rejection, and MLRs. Human BM contains T cells with similar potential. Human BM was enriched for NK T cells, approximately 50% of which recognized the nonpolymorphic CD1d molecule. In contrast to the well-characterized blood-derived CD1d-reactive invariant NK T cells, the majority of human BM CD1d-reactive T cells used diverse TCR. Healthy donor invariant NK T cells rapidly produce large amounts of IL-4 and IFN-gamma and can influence Th1/Th2 decision-making. Healthy donor BM CD1d-reactive T cells were Th2-biased and suppressed MLR and, unlike the former, responded preferentially to CD1d(+) lymphoid cells. These results identify a novel population of human T cells which may contribute to B cell development and/or maintain Th2 bias against autoimmune T cell responses against new B cell Ag receptors. Distinct CD1d-reactive T cell populations have the potential to suppress graft-vs-host disease and stimulate antitumor responses.
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Affiliation(s)
- M A Exley
- Cancer Biology Program, Hematology/Oncology, Beth Israel-Deaconess Medical Center, Bone Marrow Transplant Program, Harvard Skin Disease Research Center, Harvard Medical School, Boston, MA 02115, USA.
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