Articles tagged "Alloantigens"

2020 American Transplant Congress
Infectious Tolerance Depends Upon the ‘Exokine’ IL35
W. J. Burlingham¹, J. A. Sullivan¹, Y. Tomita², E. Jankowska-Gan¹, D. Lema¹, S. Hong³, D. A. Vignali⁴
¹Surgery, University of Wisconsin, Madison, WI, ²Surgery, Tokai University, Tokyo, Japan, ³Pharmacy, University of Wisconsin, Madison, WI, ⁴Immunology, University of Pittsburgh, Pittsburgh, PA
*Purpose: Interleukin-35 (IL35) is an immunosuppressive cytokine composed of Ebi3 and p35 subunits. Yet the form(s) that IL35 assumes and its role in infectious tolerance,…
2020 American Transplant Congress
Anticipated Observations: The Role of DQ Antigen Frequencies among Donors and Recipients in a Pediatric Renal Transplant Cohort
S. Gattis¹, R. George², R. Liverman³, A. Serluco³, R. Garro², J. Figueroa², R. A. Bray², H. M. Gebel², H. C. Sullivan²
¹Emory Healthcare, Atlanta, GA, ²Emory University School of Medicine, Atlanta, GA, ³Children's Healthcare of Atlanta, Atlanta, GA
*Purpose: Donor specific HLA antibodies (DSA) that develop in the face of donor-recipient HLA mismatches are well-established independent predictors of graft loss in solid organ…
2020 American Transplant Congress
Human, Monkey Transplant Tolerance and IL35 “Exokine
W. J. Burlingham¹, E. Jankowska-Gan², D. Lema², J. H. Fechner², J. A. Sullivan², D. B. Kaufman²
¹University of Wisconsin, Madison, WI, ²Surgery, University of Wisconsin, Madison, WI
*Purpose: Studies in B6 (H2b) mice tolerized to CBA (H2k) have shown that induced allospecific Tregs make 2 very different forms of immunoregulatory cytokines: 1)…
2020 American Transplant Congress
The Potential Significance of ABO Genotyping for Donor Selection in Kidney Transplantation
Y. Zhou¹, W. Deng¹, Y. Wang¹, N. Cui¹, Y. Wu¹, J. Xu¹, S. Fu¹, L. Xiao¹, H. Liu¹, F. Xiong², Y. Miao¹
¹Department of Organ Trasplantation, Nanfang Hospital, Guangzhou, China, ²Southern Medical University, Guangzhou, China
*Purpose: The ABO blood group system is clinically important in kidney transplantation, but ABO genotyping fails to attract sufficient attention in China. We identified one…
2020 American Transplant Congress
Lims1 Gene and Risk of T-Cell Mediated Rejection in Kidney Transplant Recipients
Y. Caliskan¹, G. Karahan², S. Mirioglu³, Y. Ozluk⁴, R. Ouseph¹, H. Yazici³, H. Randall⁵, F. Savran Oguz⁶, A. Turkmen³, M. S. Sever³, K. Lentine¹
¹Division of Nephrology, Saint Louis University, Saint Louis, MO, ²Immunohematology, Leiden University Medical Center, Leiden, Netherlands, ³Division of Nephrology, Istanbul Faculty of Medicine, Istanbul, Turkey, ⁴Department of Pathology, Istanbul Faculty of Medicine, Istanbul, Turkey, ⁵Center for Abdominal Transplantation, Saint Louis University, Saint Louis, MO, ⁶Department of Medical Biology, Istanbul Faculty of Medicine, Istanbul, Turkey
*Purpose: Recent advances have provided new insights into the pathogenesis of kidney allograft rejection caused by additional antigens associated with genetic risk variant of LIM…
2020 American Transplant Congress
Pregnancy Alloimmunization Increases the Clonality of the Endogenous Treg Repertoire
K. Krupp, E. Lewis, R. Xu, P. Porrett
University of Pennsylvania, Philadelphia, PA
*Purpose: Pregnancy is a common immune sensitizing event, which creates an access barrier to organ transplantation and can impact transplant outcomes. While most research has…
2020 American Transplant Congress
Activated CD27⁺CD21^– Subset Dominate the Memory B Cell Response During Antibody-Mediated Rejection of Kidney Allografts
K. Louis¹, E. Bailly¹, C. Macedo¹, M. Marrari¹, M. Yamada¹, P. Randhawa¹, A. Zeevi¹, C. Lefaucheur², D. Metes¹
¹Surgery, University of Pittsburgh, Pittsburgh, PA, ²Inserm UMR 976, Paris, France
*Purpose: The role of alloreactive memory B (mB) cells in the pathogenesis of antibody-mediated rejection (ABMR) is increasingly recognized. Yet, a comprehensive characterization of mB…
2019 American Transplant Congress
MHC Molecule-Ablated Human Endothelial Cells Form Alloimmune-Evasive Microvessels
J. Merola¹, M. Reschke², L. Qin¹, S. Spindler¹, R. W. Pierce³, T. D. Manes⁴, G. Li¹, L. Bracaglia², N. Kirkiles-Smith⁴, T. Baltazar⁴, W. Saltzman², G. T. Tietjen¹, G. Tellides¹, J. S. Pober⁴
¹Surgery, Yale School of Medicine, New Haven, CT, ²Biomedical Engineering, Yale School of Engineering and Applied Science, New Haven, CT, ³Pediatrics, Yale School of Medicine, New Haven, CT, ⁴Immunobiology, Yale School of Medicine, New Haven, CT
*Purpose: “Off the shelf” tissue-engineered organs will require use of allogeneic cell sources. Allogeneic human endothelial cells (ECs), necessary for organ perfusion, can initiate graft…
2019 American Transplant Congress
In Vitro Model to Study the Effect of Irradiation Preconditioning on Alloimmune Responses: Development of Potential Predictive Markers
K. Shimozawa, K. Janec, L. Contreras-Ruiz, E. C. Guinan
Radiation Oncology, Dana-Farber Cancer Institute, Boston, MA
*Purpose: Pre-conditioning using total body irradiation prior to HSCT is a well-established regimen for patients with hematological malignancy. However, irradiation (IR) elicits not only immunosuppressive…
2019 American Transplant Congress
Next Gen ABO Antibody Assessment: Development of a Bead-Based ABO Antibody Detection Assay
A. Halpin¹, J. Pearcey², B. Motyka², S. Maier², J. Zhou³, T. L. Lowary⁴, C. W. Cairo⁴, L. J. West¹
¹Dept of Pediatrics, Dept of Laboratory Medicine, GlycoNet, ATI, CDTRP, University of Alberta, Edmonton, AB, Canada, ²Dept of Pediatrics, ATI, GlycoNet, CDTRP, University of Alberta, Edmonton, AB, Canada, ³Dept of Laboratory Medicine, University of Alberta, Edmonton, AB, Canada, ⁴Dept of Chemistry, GlycoNet, CDTRP, University of Alberta, Edmonton, AB, Canada
*Purpose: Accurate characterization of ABO antibodies (ABO-Ab) is critical to assess their impact in ABO incompatible (ABOi) transplantation. The current ABO-Ab detection method using erythrocyte…