Dendritic cell-expanded, islet-specific CD4+ CD25+ CD62L+ regulatory T cells restore normoglycemia in diabetic NOD mice

Kristin V. Tarbell*, Lucine Petit, Xiaopan Zuo, Priscilla Toy, Xunrong Luo, Amina Mqadmi, Hua Yang, Manikkam Suthanthiran, Svetlana Mojsov, Ralph M. Steinman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

275 Scopus citations

Abstract

Most treatments that prevent autoimmune diabetes in nonobese diabetic (NOD) mice require intervention at early pathogenic stages, when insulitis is first developing. We tested whether dendritic cell (DC)-expanded, islet antigen-specific CD4+ CD25+ suppressor T cells could treat diabetes at later stages of disease, when most of the insulin-producing islet β cells had been destroyed by infiltrating lymphocytes. CD4+ CD25+ CD62L+ regulatory T cells (T reg cells) from BDC2.5 T cell receptor transgenic mice were expanded with antigen-pulsed DCs and IL-2, and were then injected into NOD mice. A single dose of as few as 5 × 104 of these islet-specific T reg cells blocked diabetes development in prediabetic 13-wk-old NOD mice. The T reg cells also induced long-lasting reversal of hyperglycemia in 50% of mice in which overt diabetes had developed. Successfully treated diabetic mice had similar responses to glucose challenge compared with nondiabetic NOD mice. The successfully treated mice retained diabetogenic T cells, but also had substantially increased Foxp3+ cells in draining pancreatic lymph nodes. However, these Foxp3+ cells were derived from the recipient mice and not the injected T reg cells, suggesting a role for endogenous T reg cells in maintaining tolerance after treatment. Therefore, inoculation of DC-expanded, antigen-specific suppressor T cells has considerable efficacy in ameliorating ongoing diabetes in NOD mice. JEM

Original languageEnglish (US)
Pages (from-to)191-201
Number of pages11
JournalJournal of Experimental Medicine
Volume204
Issue number1
DOIs
StatePublished - Jan 22 2007

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

Fingerprint

Dive into the research topics of 'Dendritic cell-expanded, islet-specific CD4<sup>+</sup> CD25<sup>+</sup> CD62L<sup>+</sup> regulatory T cells restore normoglycemia in diabetic NOD mice'. Together they form a unique fingerprint.

Cite this