The Journal of Experimental Medicine
StemCell Technologies
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Journal of Experimental Medicine, Vol 176, 275-280, Copyright © 1992 by Rockefeller University Press

ARTICLES

Major histocompatibility complex-restricted recognition of retroviral superantigens by V beta 17+ T cells

MA Blackman, FE Lund, S Surman, RB Corley and DL Woodland
Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105.

It has been established that at least some V beta 17+ T cells interact with an endogenous superantigen encoded by the murine retrovirus, Mtv- 9. To analyze the role of major histocompatibility complex (MHC) class II molecules in presenting the Mtv-9 encoded superantigen, vSAG-9 to V beta 17+ hybridomas, a panel of nine hybridomas was tested for their ability to respond to A20/2J (H-2d) and LBK (H-2a) cells which had been transfected with the vSAG-9 gene. Whereas some of the hybridomas recognized vSAG-9 exclusively in the context of H-2a, other hybridomas recognized vSAG-9 exclusively in the context of H-2d or in the context of both H-2d and H-2a. These results suggest that: (a) the class II MHC molecule plays a direct role in the recognition of retroviral superantigen by T cells, rather than serving simply as a platform for presentation; and, (b) it is likely that components of the TCR other than V beta are involved in the vSAG-9/TCR/class II interaction.
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