SEARCH:   Advanced

Blood, 15 January 2005, Vol. 105, No. 2, pp. 750-758. Prepublished online as a Blood First Edition Paper on September 16, 2004; DOI 10.1182/blood-2004-06-2467. This Article Full Text Full Text (PDF) All Versions of this Article: 2004-06-2467v1 105/2/750    most recent Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Rights and Permissions Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Google Scholar Google Scholar Articles by Godfrey, W. R. Articles by Porter, S. B. Search for Related Content PubMed PubMed Citation Articles by Godfrey, W. R. Articles by Porter, S. B. Related Collections Immunobiology Gene Expression Social Bookmarking                   What's this?  Previous Article  |  Table of Contents  |  Next Article  IMMUNOBIOLOGY Cord blood CD4+CD25+-derived T regulatory cell lines express FoxP3 protein and manifest potent suppressor function Wayne R. Godfrey, Darrin J. Spoden, Ying G. Ge, Seth R. Baker, Baoling Liu, Bruce L. Levine, Carl H. June, Bruce R. Blazar, and Stephen B. Porter From the Departments of Pediatrics and Medicine, University of Minnesota Cancer Center, Division of Hematology, Oncology, and Transplantation, Minneapolis; and the Abramson Family Cancer Research Institute, University of Pennsylvania Cancer Center, Philadelphia. CD4+CD25+ T regulatory (Treg) cells have been shown to critically regulate self and allograft tolerance in mice. Studies of human Treg cells have been hindered by low numbers present in peripheral blood and difficult purification. We found that cord blood was a superior source for Treg-cell isolation and cell line generation compared with adult blood. Cord blood CD4+CD25+ cells were readily purified and generated cell lines that consistently exhibited potent suppressor activity, with more than 95% suppression of allogeneic mixed lymphocyte reactions (MLRs) (29 of 30 donors). Cultured Treg cells blocked cytokine accumulation in MLRs, with a less robust inhibition of chemokine production. These cell lines uniformly expressed CD25, CD62L, CCR7, CD27, and intracellular cytotoxic T-lymphocyte antigen-4 (CTLA4). FoxP3 protein, but not mRNA, was specifically expressed. Upon restimulation with anti-CD3/CD28 beads, the cultured Treg cells produced minimal cytokines (interleukin-2 [IL-2], interferon- [IFN-], and IL-10) and preferentially expressed tumor growth factor- (TGF-) latency associated protein. Cytokine production, however, was restored to normal levels by restimulation with phorbol myristate acetate (PMA)/ionomycin. Cord blood–derived cultured suppressor cell function was predominantly independent of IL-10 and TGF-. These results demonstrate cord blood contains a significant number of Treg precursor cells capable of potent suppressor function after culture activation. Banked cord blood specimens may serve as a readily available source of Treg cells for immunotherapy. CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this? This article has been cited by other articles: J. J. A. Coenen, H. J. P. M. Koenen, E. van Rijssen, L. B. Hilbrands, and I. Joosten Rapamycin, and not cyclosporin A, preserves the highly suppressive CD27+ subset of human CD4+CD25+ regulatory T cells Blood, February 1, 2006; 107(3): 1018 - 1023. [Abstract] [Full Text] [PDF] E. Biagi, R. Rousseau, E. Yvon, M. Schwartz, G. Dotti, A. Foster, D. Havlik-Cooper, B. Grilley, A. Gee, K. Baker, et al. Responses to Human CD40 Ligand/Human Interleukin-2 Autologous Cell Vaccine in Patients with B-Cell Chronic Lymphocytic Leukemia Clin. Cancer Res., October 1, 2005; 11(19): 6916 - 6923. [Abstract] [Full Text] [PDF]

	Copyright © 2005 by American Society of Hematology         Online ISSN: 1528-0020