title: Peritoneal gamma delta T cells induced by Escherichia coli infection in mice. Correlation between Thy-1 phenotype and host minor lymphocyte-stimulating phenotype.
abstract: We found that gamma delta T cells increased in number in the peritoneal cavity after i.p. inoculation with Escherichia coli (ATCC 26) in mice. The increase of the gamma delta T cells was most prominent on day 5 after inoculation when the pathogens had been already eliminated from the hosts. Two-color flow cytometric (FCM) analysis revealed that these gamma delta T cells in infected C57BL/6 mice expressed Thy-1 Ag on their cell surface. On the other hand, gamma delta T cells induced by E. coli inoculation in C3H/He mice contained Thy-1-negative gamma delta T cells in addition to the Thy-1-positive gamma delta T cells. In both strains, irrespective of Thy-1 Ag expression, these gamma delta T cells were CD5 negative, CD44 positive, L-selectin negative, Ly-6C negative, and IL-2R low positive. Analyses of peritoneal exudate cells (PEC) from several other strains of mice after E. coli inoculation suggested that Thy-1-negative gamma delta T cells appear in mice carrying endogenous superantigen specific for V beta 3, especially mammary tumor virus-6. These findings suggest that Thy-1 Ag expression on the gamma delta T cells appearing in the peritoneal cavity after i.p. E. coli inoculation is correlated to the Mls phenotype of the host mice.
authors.affiliation: Department of Immunology, Kyushu University, Fukuoka, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Takada
authors.forename: K
authors.initials: K
authors.lastname: Hiromatsu
authors.forename: G
authors.initials: G
authors.lastname: Matsuzaki
authors.forename: K
authors.initials: K
authors.lastname: Muramori
authors.forename: K
authors.initials: K
authors.lastname: Nomoto
mesh_terms: D000818:Animals; D000954:Antigens, Surface / Q000032:analysis; D004927:Escherichia coli Infections / Q000276:immunology*; D005260:Female; D005434:Flow Cytometry; D016130:Immunophenotyping; D008213:Lymphocyte Activation; D008562:Membrane Glycoproteins / Q000032:analysis; D051379:Mice; D008815:Mice, Inbred Strains; D008819:Mice, Nude / Q000276:immunology; D010529:Peritoneal Cavity / Q000166:cytology; D016692:Receptors, Antigen, T-Cell, gamma-delta / Q000276:immunology*; D013045:Species Specificity; D016176:T-Lymphocyte Subsets / Q000276:immunology*; D018800:Thy-1 Antigens
chemical_list: D000954:Antigens, Surface; D008562:Membrane Glycoproteins; D016692:Receptors, Antigen, T-Cell, gamma-delta; D018800:Thy-1 Antigens