Prevention of rejection of murine islet allografts by pretreatment with anti-dendritic cell antibody

Faustman, D., Steinman, R.M., Gebel, H., Hauptfeld, V., Davie, J., and Lacy, P. Prevention of rejection of murine islet allografts by pretreatment with anti-dendritic cell antibody. Proc. Natl. Acad. Sci. USA. 81: 3864-3868, 1984https://digitalcommons.rockefeller.edu/historical-scientific-reports/1013/thumbnail.jp

Prevention of rejection of murine islet allografts by pretreatment with anti-dendritic cell antibody

Previously we have demonstrated that islets of Langerhans treated with donor-specific anti-Ia serum and complement survive when transplanted across the major histocompatibility complex of the mouse. In this study, using immunofluorescence, we demonstrate two morphologically distinct populations of Ia-positive cells scattered within the Ia-negative islet tissue. A large irregularly shaped Ia-positive subset of cells were identified as dendritic cells by using the 33D1 antibody specific for a mouse dendritic cell antigen. The other small, round Ia-positive subset was 33D1 negative. Islets pretreated with anti-dendritic cell antibody and complement prior to transplantation survived in their histoincompatible recipients for \u3e200 days. Rejection of stable islet allografts promptly occurred when transplant recipients were challenged with 1 x 105 donor dendritic cells 60 days after transplantation. These results demonstrate an important in vivo role for donor dendritic cells in the stimulation of allograft rejection

Spacers to improve performance and porosity of graphene based polymer electrolyte fuel cells

Graphene has been suggested as a potential support material to replace commercial carbon black due to its carbon corrosion resistance. However, graphene-based electrodes typically perform poorly in MEA testing due to restacking of the graphitic sheets. In this study we investigate the introduction of carbon black and their effects on the porosity and current density of graphene-based supports

Sensitization in transplantation: Assessment of risk (STAR) 2019 Working Group Meeting Report.

The purpose of the STAR 2019 Working Group was to build on findings from the initial STAR report to further clarify the expectations, limitations, perceptions, and utility of alloimmune assays that are currently in use or in development for risk assessment in the setting of organ transplantation. The goal was to determine the precision and clinical feasibility/utility of such assays in evaluating both memory and primary alloimmune risks. The process included a critical review of biologically driven, state-of-the-art, clinical diagnostics literature by experts in the field and an open public forum in a face-to-face meeting to promote broader engagement of the American Society of Transplantation and American Society of Histocompatibility and Immunogenetics membership. This report summarizes the literature review and the workshop discussions. Specifically, it highlights (1) available assays to evaluate the attributes of HLA antibodies and their utility both as clinical diagnostics and as research tools to evaluate the effector mechanisms driving rejection; (2) potential assays to assess the presence of alloimmune T and B cell memory; and (3) progress in the development of HLA molecular mismatch computational scores as a potential prognostic biomarker for primary alloimmunity and its application in research trial design

T-cell receptor gene rearrangement and expression in human natural killer cells: natural killer activity is not dependent on the rearrangement and expression of T-cell receptor α , β , or γ genes

To test the hypothesis that the T-cell receptor ( Tcr ) λ gene encodes a natural killer (NK) cell receptor molecule, three human NK clones and fresh peripheral blood lymphocytes with NK activity from two patients with a CD16 + lymphocytosis were analyzed for rearrangements and expression of the human Tcr α, β , and λ genes. Two of the clones displayed distinct rearrangements of their Tcr β and λ genes and expressed mature Tcr α, β , and αl RNA. However, one of the clones and both patient samples displayed marked NK activity but failed to rearrange or express any of their Tcr genes. These findings demonstrate that human natural killer activity is not dependent on Tcr λ gene rearrangement and expression. In addition, they confirm previous findings concerning the lack of Tcr α and β gene expression in some natural killer cells. Thus, they suggest the existence of additional NK-specific recognition molecules.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/46745/1/251_2004_Article_BF00376117.pd

Sensitization in Transplantation: Assessment of Risk (STAR) 2017 Working Group Meeting Report

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/144684/1/ajt14752_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/144684/2/ajt14752.pd