The Journal of Experimental Medicine
VeriKine-HS Human IFN-Beta
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Published online 14 October 2002 doi:10.1084/jem.20021215
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© Rockefeller University Press, 0022-1007/2002/10/1091 $5.00
The Journal of Experimental Medicine, Volume 196, Number 8, 1091-1097


Brief Definitive Report

Immune Tolerance After Delivery of Dying Cells to Dendritic Cells In Situ

Kang Liu1, Tomonori Iyoda2, Marzena Saternus1, Yukino Kimura2, Kayo Inaba2 and Ralph M. Steinman1

1 Laboratory of Cellular Physiology and Immunology, Chris Browne Center for Immunology and Immune Diseases, The Rockefeller University, New York, NY 10021
2 Department of Animal Development and Physiology, Graduate School of Biostudies, Kyoto University, Kyoto 606-8502, Japan

Address correspondence to R.M. Steinman, Laboratory of Cellular Physiology and Immunology, Chris Browne Center for Immunology and Immune Diseases, The Rockefeller University, New York, NY 10021. Phone: 212-327-8106; Fax: 212-327-8875; E-mail: steinma{at}mail.rockefeller.edu

Peripheral immune tolerance is believed to be induced by the processing and presentation of self-tissues that die during physiologic tissue turnover. To examine the mechanism that mediates tolerance, we injected mice with dying syngeneic TAP-/- splenocytes loaded with small amounts of the protein antigen, ovalbumin (OVA). After ingestion and presentation of cell-associated OVA by the CD8+ subset of dendritic cells in situ, large numbers of antigen-reactive, CD8+ T cell receptor (TCR) transgenic T lymphocytes were driven into cell cycle, but then the T cells were deleted. The animals were also tolerant to challenge with OVA in complete Freund's adjuvant. An agonistic anti-CD40 monoclonal antibody was then administered together with the OVA-loaded splenocytes, so that the dendritic cells in the recipient mice would mature. In contrast to observations made in the steady state, the antigen-reactive T cells expanded in numbers for 1–2 wk and produced large amounts of interleukin 2 and interferon {gamma}, while the animals retained responsiveness to antigen rechallenge. The specific tolerance that develops when dendritic cells process self tissues in the steady state should prevent or reduce the development of autoimmunity when dying cells are subsequently processed during infection.

Key Words: dendritic cells • peripheral tolerance • CD8+ T cells • deletion • DC subset


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