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Natural killer activity of gut mucosal lymphoid cells in mice
Author(s) -
Tagliabue Aldo,
Luini Walter,
Soldateschi Dario,
Boraschi Diana
Publication year - 1981
Publication title -
european journal of immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.272
H-Index - 201
eISSN - 1521-4141
pISSN - 0014-2980
DOI - 10.1002/eji.1830111112
Subject(s) - biology , spleen , cytotoxic t cell , intraepithelial lymphocyte , interleukin 12 , lymphokine activated killer cell , interleukin 21 , natural killer cell , effector , cytotoxicity , immunology , natural killer t cell , microbiology and biotechnology , in vitro , immune system , biochemistry
Abstract Intraepithelial lymphoid cells (IEL) obtained from the mucosa of mouse small intestine were tested for natural killer (NK) activity in a 20‐h 51 Cr‐release assay against YAC‐1 and RL♂ 1 tumor cells. It was found that IEL possess a strong NK activity, higher than spleen cells, whereas lymphocytes from Peyer's patches (PPL) did not show any NK activity. The cytotoxic activity of IEL could be boosted by interferon (IFN‐β) treatment, but no NK activity could be induced in PPL by in vitro IFN‐β treatment. The characteristics of the NK effector cells present in the mouse intestine strictly resemble those of NK cells in the spleen. In fact, intestinal NK activity is not affected by depletion of adherent cells and only partially reduced by anti‐Thy‐1.2 antibodies plus complement. Moreover, the age dependency of NK cytotoxicity is identical for IEL and spleen. Finally, NK‐insensitive target cells are not lysed by IEL.