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. 1988 May;62(5):1513–1519. doi: 10.1128/jvi.62.5.1513-1519.1988

Recognition of adenovirus E1A gene products on immortalized cell surfaces by cytotoxic T lymphocytes.

D Bellgrau 1, T A Walker 1, J L Cook 1
PMCID: PMC253175  PMID: 2451753

Abstract

The experiments described in this report were designed to examine whether target cells transfected with the adenovirus E1A gene and exhibiting increased susceptibility to lysis by natural killer cells and activated macrophages (J. L. Cook, T. A. Walker, A. M. Lewis, Jr., H. E. Ruley, F. L. Graham, and S. H. Pilder, Proc. Natl. Acad. Sci. USA 83:6965-6969, 1986) also express E1A proteins on their surfaces. MT1A, 12S, and 13S are strain Fischer baby rat kidney (BRK) cell lines immortalized by transfection with plasmids containing only the E1A gene of nononcogenic adenovirus. All of these cell lines were effective in stimulating the generation of cytotoxic T lymphocytes (CTL) in vitro, provided that the cultures were supplemented with an exogenous source of lymphokine and that the responding lymphocytes were from syngeneic Fischer rats previously immunized with a cell line containing the intact E1A gene. HrA2, a Fischer BRK cell line immortalized by transfection with a plasmid containing only exon 1 of the E1A gene, did not generate, nor was it lysed by, E1A-specific CTL. The cytolytic activity of E1A-specific CTL was blocked by antiserum from Fischer rats immunized with purified E1A proteins synthesized in Escherichia coli, supporting the conclusion that an epitope on E1A proteins encoded by the intact E1A gene constitutes part of the CTL target structure on adenovirus-transformed cells. These data suggest that in addition to their functions within host cells, E1A gene products are important immunogenic determinants on the surfaces of adenovirus-transformed cells.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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