Inventors:
Bruce Blazar - Golden Valley MN, US
Carl June - Merion Station PA, US
Wayne R. Godfrey - Birchwood MN, US
Richard G. Carroll - Lansdowne PA, US
Bruce Levine - Cherry Hill NJ, US
James L. Riley - Downingtown PA, US
Patricia Taylor - St. Paul MN, US
Assignee:
The Trustees of the University of Pennsylvania - Philadelphia PA
International Classification:
C12N 5/00
Abstract:
Based upon a strong correlation between regulator T cells (Treg cells) and suppressing or preventing a cytotoxic T cell response, provided are methods for the production of ex vivo activated and culture-expanded isolated CD4CD25 suppressor Treg cells for the prevention or suppression of immune reactions in a host, particularly in a human host, and including autoimmune responses. The resulting ex vivo culture-expanded Treg cells provide a sufficient amount of otherwise low numbers of such cells, having long term suppressor capability to permit therapeutic uses, including the preventing, suppressing, blocking or inhibiting the rejection of transplanted tissue in a human or other animal host, or protecting against graft vs host disease. Also provided are therapeutic and immunosuppressive methods utilizing the ex vivo culture-expanded Treg cells for human treatment, and high efficiency methods for research use.