TY - JOUR
T1 - Murine intestinal intraepithelial lymphocytes. II. Comparison of freshly isolated and cultured intraepithelial lymphocytes
AU - Ernst, Peter B.
AU - Petit, Agnes
AU - Befus, A. Dean
AU - Clark, David A.
AU - Rosenthal, Ken L.
AU - Ishizaka, Teruko
AU - Bienenstock, John
PY - 1985
Y1 - 1985
N2 - Highly enriched preparations of intraepithelial lymphocytes (IEL) containing a large subpopulation of granulated cells were isolated from the murine small intestinal mucosa. We cultured IEL in media containing interleukin 2 (growth media conditioned with 20% concanavalin A supernatant; Con ACM) or mast cell growth factor(s) (growth media conditioned with 40% WEHI‐3 supernatant; WEHI CM) and compared the physical and functional properties of the cultured cells to freshly isolated IEL. IEL cultured in Con A CM developed enhanced cytotoxicity against YAC‐1, compared to freshly isolated IEL, and spontaneous cytotoxicity for P815 targets. Most of these cultured cells were Thy‐1+ Lyt‐1− Lyt‐2+, and contained cyto‐ plasmic granules similar to those seen in electron photomicrographs of other cytotoxic cell populations. IEL cultured in WEHI CM gave rise to cells that morphologically resembled mast cells. Unlike freshly isolated IEL, the cells stained metachromatically, contained 20C‐450 ng of histamine/106 cells and expressed high‐affinity receptors for IgE. Our data clearly show that, although IEL do not themselves have physical characteristics of mast cells, they do contain mast cell precursors. In addition, IEL grown in the presence of T cell growth factors give rise to an activated cytotoxic cell population which is mostly granulated and Thy‐1+ Lyt‐1− Lyt‐2+.
AB - Highly enriched preparations of intraepithelial lymphocytes (IEL) containing a large subpopulation of granulated cells were isolated from the murine small intestinal mucosa. We cultured IEL in media containing interleukin 2 (growth media conditioned with 20% concanavalin A supernatant; Con ACM) or mast cell growth factor(s) (growth media conditioned with 40% WEHI‐3 supernatant; WEHI CM) and compared the physical and functional properties of the cultured cells to freshly isolated IEL. IEL cultured in Con A CM developed enhanced cytotoxicity against YAC‐1, compared to freshly isolated IEL, and spontaneous cytotoxicity for P815 targets. Most of these cultured cells were Thy‐1+ Lyt‐1− Lyt‐2+, and contained cyto‐ plasmic granules similar to those seen in electron photomicrographs of other cytotoxic cell populations. IEL cultured in WEHI CM gave rise to cells that morphologically resembled mast cells. Unlike freshly isolated IEL, the cells stained metachromatically, contained 20C‐450 ng of histamine/106 cells and expressed high‐affinity receptors for IgE. Our data clearly show that, although IEL do not themselves have physical characteristics of mast cells, they do contain mast cell precursors. In addition, IEL grown in the presence of T cell growth factors give rise to an activated cytotoxic cell population which is mostly granulated and Thy‐1+ Lyt‐1− Lyt‐2+.
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U2 - 10.1002/eji.1830150303
DO - 10.1002/eji.1830150303
M3 - Article
C2 - 3920052
AN - SCOPUS:0021884892
SN - 0014-2980
VL - 15
SP - 216
EP - 221
JO - European Journal of Immunology
JF - European Journal of Immunology
IS - 3
ER -