title: Regulation of human gut B lymphocytes by T lymphocytes.
abstract: The aims of this study were first, to assess whether or not immunoglobulin secretion from human gut mucosal B lymphocytes can be modified by T lymphocytes, and second whether human gut mucosal T lymphocytes are capable of regulating mucosal B lymphocyte function. T and B lymphocyte enriched cell populations were isolated from gut mucosa and co-cultured in varying proportions. Addition of T lymphocytes to B enriched mucosal cell populations (ratio B:T = 2:1) showed that mucosal B lymphocytes were responsive to T cell 'help'. Addition of more T cells (ratio B:T = 2:10) suppressed immunoglobulin synthesis.
mesh_terms: D001402:B-Lymphocytes / Q000276:immunology*; D002478:Cells, Cultured; D006801:Humans; D007070:Immunoglobulin A / Q000378:metabolism; D007074:Immunoglobulin G / Q000378:metabolism; D007075:Immunoglobulin M / Q000378:metabolism; D007413:Intestinal Mucosa / Q000166:cytology / Q000276:immunology* / Q000378:metabolism; D008211:Lymphocyte Cooperation; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M