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Corrado Cilio

Professor

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Comparison of cryopreservation methods on T-cell responses to islet and control antigens from type 1 diabetic patients and controls

Author

  • B. Brooks-Worrell
  • T. Tree
  • S. I. Mannering
  • I. Durinovic-Bello
  • E. James
  • P. Gottlieb
  • S. Wong
  • Z. Zhou
  • L. Yang
  • Corrado Cilio
  • J. Reichow
  • B. Menart
  • R. Rutter
  • R. Schreiner
  • M. Pham
  • L. Petrich de Marquesini
  • O. Lou
  • M. Scotto
  • R. Mallone
  • N. C. Schloot

Summary, in English

Background Type 1 diabetes (T1D) is a cell-mediated autoimmune disease characterized by destruction of the pancreatic islet cells. The use of cryopreserved cells is preferable to the use of freshly isolated cells to monitor clinical trials to decrease assay and laboratory variability. Methods The T-Cell Workshop Committee of the Immunology of Diabetes Society compared two widely accepted T-cell freezing protocols (warm and cold) to freshly isolated peripheral blood mononuclear cells from patients with T1D and controls in terms of recovery, viability, cell subset composition, and performance in functional assays currently in use in T1D-related research. Nine laboratories participated in the study with four different functional assays included. Results The cold freezing method yielded higher recovery and viability compared with the warm freezing method. Irrespective of freezing protocol, B cells and CD8+ T cells were enriched, monocyte fraction decreased, and islet antigen-reactive responses were lower in frozen versus fresh cells. However, these results need to take in to account that the overall response to islet autoantigens was low in some assays. Conclusions In the current study, none of the tested T-cell functional assays performed well using frozen samples. More research is required to identify a freezing method and a T-cell functional assay that will produce responses in patients with T1D comparable to responses using fresh peripheral blood mononuclear cells. Copyright (C) 2011 John Wiley & Sons, Ltd.

Department/s

  • Diabetes - Immunovirology
  • EXODIAB: Excellence in Diabetes Research in Sweden

Publishing year

2011

Language

English

Pages

737-745

Publication/Series

Diabetes/Metabolism Research & Reviews

Volume

27

Issue

8

Document type

Journal article

Publisher

John Wiley and Sons

Topic

  • Endocrinology and Diabetes

Keywords

  • T cells
  • proliferation
  • ELISPOT
  • tetramer
  • cryopreservation
  • CFSE
  • islet
  • antigens
  • type 1 diabetes

Status

Published

Research group

  • Diabetes - Immunovirology

ISBN/ISSN/Other

  • ISSN: 1520-7552