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Publication Detail
Adoptive therapy with redirected primary regulatory T cells results in antigen-specific suppression of arthritis.
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Journal Article
  • Authors:
    Wright GP, Notley CA, Xue S-A, Bendle GM, Holler A, Schumacher TN, Ehrenstein MR, Stauss HJ
  • Publication date:
    10/11/2009
  • Pagination:
    19078, 19083
  • Journal:
    Proc Natl Acad Sci U S A
  • Volume:
    106
  • Issue:
    45
  • Status:
    Published
  • Country:
    United States
  • PII:
    0907396106
  • Language:
    eng
  • Keywords:
    Adoptive Transfer, Animals, Arthritis, Rheumatoid, Autoantigens, Flow Cytometry, Gene Transfer Techniques, Genetic Vectors, Immunotherapy, Adoptive, Mice, Mice, Inbred C57BL, Retroviridae, T-Cell Antigen Receptor Specificity, T-Lymphocytes, Regulatory
Abstract
Regulatory T cells (Tregs) can suppress a wide range of immune cells, making them an ideal candidate for the treatment of autoimmunity. The potential clinical translation of targeted therapy with antigen-specific Tregs is hampered by the difficulties of isolating rare specificities from the natural polyclonal T cell repertoire. Moreover, the initiating antigen is often unknown in autoimmune disease. Here we tested the ability of antigen-specific Tregs generated by retroviral gene transfer to ameliorate arthritis through linked suppression and therefore without cognate recognition of the disease-initiating antigen. We explored two distinct strategies: T cell receptor (TCR) gene transfer into purified CD4+CD25+ T cells was used to redirect the specificity of naturally occurring Tregs; and co-transfer of FoxP3 and TCR genes served to convert conventional CD4(+) T cells into antigen-specific regulators. Following adoptive transfer into recipient mice, the gene-modified T cells engrafted efficiently and retained TCR and FoxP3 expression. Using an established arthritis model, we demonstrate antigen-driven accumulation of the gene modified T cells at the site of joint inflammation, which resulted in a local reduction in the number of inflammatory Th17 cells and a significant decrease in arthritic bone destruction. Together, we describe a robust strategy to rapidly generate antigen-specific regulatory T cells capable of highly targeted inhibition of tissue damage in the absence of systemic immune suppression. This opens the possibility to target Tregs to tissue-specific antigens for the treatment of autoimmune tissue damage without the knowledge of the disease-causing autoantigens recognized by pathogenic T cells.
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