Candida albicans-specific Ly-2+ lymphocytes with cytolytic activity.

Abstract:

:To determine whether antigen (Ag)-specific cytotoxic T lymphocytes are generated during experimental Candida albicans infection, purified L3T4+ and Ly-2+ lymphocytes from immunized mice were cultured in the presence of syngeneic accessory cells, C. albicans Ag, and interleukin 2. Yeast-infected bone marrow macrophages were used as target cells in a standard 51Cr-release assay. Freshly isolated L3T4+ and Ly-2+ lymphocytes failed to lyse either target cell type. However, Ag-specific, major histocompatibility complex (MHC)-unrestricted lysis of infected macrophages was evident with immune Ly-2+ cells after 7-10 days in culture. The cultured cells were greater than 98% Thy-1+, CD3+, L3T4-, Ly-2+, T cell receptor alpha/beta + T cells, and their lytic activity was potentiated by the addition of anti-CD3 monoclonal antibodies. At limiting effector cell numbers, Ag-specific MHC-restricted lymphocytes with cytotoxic activity against infected macrophages could be identified. We suggest that C. albicans infection stimulates multiple cytotoxic cell precursors with varying recognition stringency, which include MHC class I-restricted, Ag-specific cytotoxic T lymphocytes.

journal_name

Eur J Immunol

authors

Romani L,Mocci S,Cenci E,Rossi R,Puccetti P,Bistoni F

doi

10.1002/eji.1830210636

subject

Has Abstract

pub_date

1991-06-01 00:00:00

pages

1567-70

issue

6

eissn

0014-2980

issn

1521-4141

journal_volume

21

pub_type

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