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    J Exp Med. 1990 Mar 1;171(3):763-73.

    Cytotoxic T cells recognize a peptide from the circumsporozoite protein on malaria-infected hepatocytes.

    Source

    Infectious Disease Department, Naval Medical Research Institute, Bethesda, Maryland 20814.

    Abstract

    Irradiated malaria sporozoites can induce CD8+ T cells that are required for protection against infection. However, the parasite antigens targeted by this immune response are unknown. We have discovered a 16-amino acid epitope from the Plasmodium yoelii circumsporozoite (CS) protein that is recognized by cytotoxic T cells from immune mice. Lymphocytes stimulated with this peptide can kill P. yoelii liver stage parasites in vitro in an MHC-restricted, antigen-specific manner. Thus, epitopes from the CS protein are presented on the surface of infected hepatocytes and can be targets for T cells, even though intact CS protein has not been detected on the surface of the infected hepatocyte. A vaccine that induced CTL to parasite antigens might protect humans against malaria by eliminating liver stage parasites.

    PMID:
    1689762
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC2187765
    Free PMC Article

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