title: Generation of intestinal T cells from progenitors residing in gut cryptopatches.
abstract: Cryptopatches (CPs) are part of the murine intestinal immune compartment. Cells isolated from CPs of the small intestine that were c-kit positive (c-kit+) but lineage markers negative (Lin-) gave rise to T cell receptor (TCR) alphabeta and TCR gammadelta intestinal intraepithelial T cells after in vivo transfer or tissue engraftment into severe combined immunodeficient mice. In contrast, cells from Peyer's patches and mesenteric lymph nodes, which belong in the same intestinal immune compartment but lack c-kit+Lin- cells, failed to do so. These findings and results of electron microscopic analysis provide evidence of a local intestinal T cell precursor that develops in the CPs.
authors.affiliation: Department of Microbiology, Keio University School of Medicine, Tokyo 160, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Saito
authors.forename: Y
authors.initials: Y
authors.lastname: Kanamori
authors.forename: T
authors.initials: T
authors.lastname: Takemori
authors.forename: H
authors.initials: H
authors.lastname: Nariuchi
authors.forename: E
authors.initials: E
authors.lastname: Kubota
authors.forename: H
authors.initials: H
authors.lastname: Takahashi-Iwanaga
authors.forename: T
authors.initials: T
authors.lastname: Iwanaga
authors.forename: H
authors.initials: H
authors.lastname: Ishikawa
mesh_terms: D000818:Animals; D001485:Basement Membrane / Q000648:ultrastructure; D019070:Cell Lineage; D017690:Cell Transplantation; D018380:Hematopoietic Stem Cell Transplantation; D006412:Hematopoietic Stem Cells / Q000166:cytology / Q000276:immunology*; D018928:Immunity, Mucosal; D007413:Intestinal Mucosa / Q000166:cytology / Q000276:immunology* / Q000637:transplantation / Q000648:ultrastructure; D007421:Intestine, Small / Q000166:cytology / Q000276:immunology* / Q000637:transplantation / Q000648:ultrastructure; D008198:Lymph Nodes / Q000166:cytology / Q000276:immunology; D051379:Mice; D008807:Mice, Inbred BALB C; D008819:Mice, Nude; D016513:Mice, SCID; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning; D010581:Peyer's Patches / Q000166:cytology / Q000276:immunology; D019009:Proto-Oncogene Proteins c-kit / Q000032:analysis; D016693:Receptors, Antigen, T-Cell, alpha-beta / Q000032:analysis; D016692:Receptors, Antigen, T-Cell, gamma-delta / Q000032:analysis; D016176:T-Lymphocyte Subsets / Q000166:cytology / Q000276:immunology* / Q000637:transplantation
chemical_list: D016693:Receptors, Antigen, T-Cell, alpha-beta; D016692:Receptors, Antigen, T-Cell, gamma-delta; D019009:Proto-Oncogene Proteins c-kit