Articles tagged "Xenotransplantation"

2016 American Transplant Congress
Impact of Mixed Xenogeneic Porcine Hematopoietic Chimerism on Human NK Cell Recognition in a Humanized Mouse Model.
H. Li,¹ P. Vishwasrao,^1,2 M. Holzl,¹ S. Chen,¹ G. Choi,^2,3 G. Zhao,¹ M. Sykes.¹
¹Columbia Center for Translational Immunology, Columbia University, New York, NY; ²Department of Hematology, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands; ³Department of Hematology, University Medical Center Groningen, Groningen, Netherlands.
Xenotransplantation is a potential solution for the shortage of organs for transplantation. However, potent xenograft rejection responses present a formidable barrier. Mixed xenogeneic hematopoietic chimerism…
2016 American Transplant Congress
Long Term Heterotopic Cardiac Xenograft Survival from Donor Pigs with Six Gene Modifications.
M. Mohiuddin,¹ A. Singh,¹ J. Chan,¹ P. Corcoran,¹ M. Thomas III,² B. Lewis,² D. Ayares,³ K. Horvath.¹
¹CSRP, NHLBI/NIH, Bethesda, MD; ²DVR / RS, NIH, Bethesda, MD; ³Revivicor, Inc, Blacksburgh, VA.
Introduction: We have recently reported pig xenograft survival of more than 2.5 years in a heterotopic cardiac xenograft model. Some of the animals exhibited local…
2016 American Transplant Congress
Human Leukocyte Antigen-E Expression on Porcine GalTKO.hCD46 Cells Improves Ex-Vivo Xenograft Survival and Attenuates Injury.
C. Laird,¹ N. Kubicki,¹ L. Burdorf,¹ T. Zhang,¹ X. Chang,¹ G. Braileanu,¹ C. Phelps,² D. Ayares,² A. Azimzadeh,¹ R. Pierson.¹
¹University of Maryland School of Medicine, Baltimore, MD; ²Revivicor, Inc, Blacksburg, VA.
Purpose:Lung xenografts are subject to injury mechanisms associated with the sequestration of human cells, including natural killer (NK) cells. To control NK cell associated injury,…
2016 American Transplant Congress
Long-Term Islet Xenograft Survival Requires Effective Control of Early Xenogeneic IL-17 Response and Late Xenogeneic IFN-γ Response.
H. Kang,¹ S. Wang,² X. Zhang,³ A. Singh,⁵ L. Zhang,¹ W. Suarez-Pinzon,⁵ S. Miller,⁴ B. Hering,⁵ X. Luo.^1,3,4
¹Medicine, Northwestern University, Chicago, IL; ²Surgery, Tianjin Union Medical Center, Tianjin, China; ³Comprehensive Transplant Center, Northwestern University, Chicago, IL; ⁴Microbiology and Immunology, Northwestern University, Chicago, IL; ⁵Schulze Diabetes Institute, University of Minnesota, Minneapolis, MN.
Introduction: Tolerance induction for xenogeneic islet transplant remains a challenge. We have previously shown that peri-transplant infusion of donor cells treated with 1-ethyl-3-(3'-dimethylaminopropyl)-carbodiimide (ECDI) is…
2016 American Transplant Congress
Successful Human-to-NonHuman Primate Pancreatic Islet Intraportal Xenotransplantation Using a Human Allo-Based Immunosuppression Regimen and Its Potential Pre-Clinical Application.
J. McGarrigle,¹ M. Bochenek,¹ E. Marchese,¹ A. Khan,¹ D. Gutierrez,^1,2 A. Mikalauskaite,¹ B. McCracken,¹ M. Reedy,¹ M. Omami,¹ C.-C. Yeh,¹ M. Spaggiari,¹ M. Nourmohammadzadeh,^1,2 D. Isa,¹ S. Ghani,¹ L.-J. Wang,¹ J. Mendoza-Elias,^1,2 Y. Wang,¹ J. Oberholzer.^1,2
¹Surgery, University of Illinois at Chicago, Chicago; ²Bioengineering, University of Illinois at Chicago, Chicago.
Intraportal pancreatic islet cell transplantation is a successful treatment for type-1 diabetes (T1DM) in humans. Unfortunately, the lack of donor pancreatic organs is a major…
2016 American Transplant Congress
Multiplex Profiling of Plasma Proteins After Xenogenic Lung Exposure.
A. Azimzadeh,¹ N. Cheng,¹ X. Cheng,¹ E. Schwartz,¹ L. Burdorf,¹ S. Dahi,¹ N. Kubicki,¹ D. Parsell,¹ T. Zhang,¹ D. Cooper,² C. Phelps,³ D. Ayares,³ R. Pierson III.¹
¹Univ. Of Maryland, Baltimore, MD; ²University of Pittsburgh, Pittsburgh, PN; ³Revivicor, Blacksburg, VA.
Background: Porcine lungs exhibit injury by human blood and are only partially protected in GalTKO organs with additional human membrane cofactor protein (hCD46). Residual injury…
2016 American Transplant Congress
Human PDL1⁺ SLA-DR^–Swine Vascular Endothelial Cells Suppress Pig-Human PBMC Xeno-MLR(Mixed Lymphocyte Reaction) by Inducing Human Regulatory IL-10⁺Tr1(Type 1 Regulatory T Cells) Subset for Suppression of Xenogeneic Reactions.
Q. Shao, Q. Diag.
The Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, China.
Type 1 regulatory T cells(Tr1) are active in transplantation tolerance. The Tr1 cells are inducible in our lab from human CD4 T cells (hCD4 T)…
2016 American Transplant Congress
Porcine Islets Engineered with SA-FasL Protein Induces Robust Tolerance in Mice through CD4⁺CD25⁺FoxP3⁺ Treg Cells.
K. Woodward,¹ H. Zhao,¹ H. Shirwan,¹ F. Wang,¹ M. Graham,² B. Hering,² E. Yolcu.¹
¹Institute for Cellular Therapeutics and Department of Microbiology and Immunology, University of Louisville, Louisville, KY; ²Schulze Diabetes Institute and Department of Surgery, University of Minnesota, Minneapolis, MN.
Introduction: We have shown that porcine islets engineered to transiently display SA-FasL protein on their surface establish tolerance in mice following transplantation under the kidney…
2016 American Transplant Congress
An Improved Flow Cytometry Based Platelet Counting in Xeno Perfusion Models.
S. Sendil,¹ G. Braileanu,¹ W. Sun,¹ W. Hassanein,¹ D. Parsell,¹ H. Crum,² L. Burdorf,¹ R. Pierson,¹ A. Azimzadeh.¹
¹Department of Surgery, University of Maryland School of Medicine, Baltimore, MD; ²VA Medical Center, Baltimore, MD.
Aim: Human or baboon platelet sequestration and activation occurs during pig organ xenograft perfusion; its mechanism remains poorly understood. In the context of a regimen…
2016 American Transplant Congress
aPC Pretreatment of hEPCR-Expressing PAECs Attenuates Endothelial Cell Damage and Thrombosis.
C. Laird,¹ B. French,¹ D. Harris,¹ X. Chang,¹ D. Ayares,² R. Pierson,¹ A. Azimzadeh.¹
¹Cardiac Surgery, University of Maryland School of Medicine, Baltimore, MD; ²Revivicor, Inc, Blacksburg, VA.
IntroductionActivated Protein C (aPC), acting primarily through the human endothelial protein C receptor (hEPCR), mediates anti-thrombotic and anti-inflammatory cytoprotective effects in humans. We hypothesized that…