|
||
J. Exp. Med.,
Volume 188, Number 11, December 7, 1998 1977-1983
By

From the * Immunology Division, The Walter and Eliza Hall Institute of Medical Research, The Royal
Melbourne Hospital, Melbourne, Victoria 3050, Australia; This report investigates the response of CD8+ T cells to antigens presented by B cells. When
C57BL/6 mice were injected with syngeneic B cells coated with the Kb-restricted ovalbumin
(OVA) determinant OVA257-264, OVA-specific cytotoxic T lymphocyte (CTL) tolerance was
observed. To investigate the mechanism of tolerance induction, in vitro-activated CD8+ T
cells from the Kb-restricted, OVA-specific T cell receptor transgenic line OT-I (OT-I cells)
were cultured for 15 h with antigen-bearing B cells, and their survival was determined. Antigen recognition led to the killing of the B cells and, surprisingly, to the death of a large proportion of the OT-I CTLs. T cell death involved Fas (CD95), since OT-I cells deficient in CD95
molecules showed preferential survival after recognition of antigen on B cells. To investigate the tolerance mechanism in vivo, naive OT-I T cells were adoptively transferred into normal
mice, and these mice were coinjected with antigen-bearing B cells. In this case, OT-I cells proliferated transiently and were then lost from the secondary lymphoid compartment. These data
provide the first demonstration that B cells can directly tolerize CD8+ T cells, and suggest that
this occurs via CD95-mediated, activation-induced deletion.
The Cooperative Research Centre for
Vaccine Technology at the Queensland Institute of Medical Research, The Royal Brisbane Hospital,
Herston, Queensland 4029, Australia; and the § Department of Pathology and Immunology, Monash
Medical School, Prahran, Victoria 3181, Australia
This article has been cited by other articles:
| TABLE OF CONTENTS |
|