Epithelial heterogeneity in the murine thymus: a cell surface glycoprotein expressed by subcapsular and medullary epitheliumA Farr, A Nelson, J Truex and S Hosier Department of Biological Structure, University of Washington, Seattle 98195. A monoclonal antibody (MAb), G8.8, was raised against glycoconjugates isolated from a cloned line of murine medullary thymic epithelial cells. Flow cytometric analysis of the reactivity of this MAb with cultured thymic epithelium demonstrated that the ligand was expressed on the cell surface. Immunohistochemical examination of normal murine thymus revealed labeling of cells in the subcapsular and medullary areas. Immunoelectron microscopy revealed surface labeling restricted to cells possessing ultrastructural features of epithelium (desmosomes, tonofilaments, and cytoplasmic cysts). During thymic ontogeny, G8.8+ cells predominated in fetal development at the earliest time point examined (Day 14 of gestation). There was an expansion of the cortical epithelial component so that by Day 18 cortical and medullary compartments could be clearly distinguished. Immunoprecipitation of radioiodinated thymic stroma with MAb G8.8 detected a molecule with an apparent Mr of approximately 38 KD under non-reducing conditions. When reduced, the apparent Mr was slightly increased (42 KD). This MAb also exhibited reactivity with gut and epidermal epithelium and some tubular epithelium in the kidney, but did not react with epithelial parenchymal cells of the liver.
Volume 39,
Issue 5,
pp. 645-653,
05/01/1991
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M. L. deSchoolmeester, H. Manku, and K. J. Else The Innate Immune Responses of Colonic Epithelial Cells to Trichuris muris Are Similar in Mouse Strains That Develop a Type 1 or Type 2 Adaptive Immune Response. Infect. Immun., November 1, 2006; 74(11): 6280 - 6286. [Abstract] [Full Text] [PDF] |
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M. O. Palumbo, D. Levi, A. A. Chentoufi, and C. Polychronakos Isolation and Characterization of Proinsulin-Producing Medullary Thymic Epithelial Cell Clones Diabetes, September 1, 2006; 55(9): 2595 - 2601. [Abstract] [Full Text] [PDF] |
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C. Beers, A. Burich, M. J. Kleijmeer, J. M. Griffith, P. Wong, and A. Y. Rudensky Cathepsin S Controls MHC Class II-Mediated Antigen Presentation by Epithelial Cells In Vivo J. Immunol., February 1, 2005; 174(3): 1205 - 1212. [Abstract] [Full Text] [PDF] |
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T. Ueno, F. Saito, D. H.D. Gray, S. Kuse, K. Hieshima, H. Nakano, T. Kakiuchi, M. Lipp, R. L. Boyd, and Y. Takahama CCR7 Signals Are Essential for Cortex-Medulla Migration of Developing Thymocytes J. Exp. Med., August 16, 2004; 200(4): 493 - 505. [Abstract] [Full Text] [PDF] |
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H.-C. Wang, Q. Zhou, J. Dragoo, and J. R. Klein Most Murine CD8+ Intestinal Intraepithelial Lymphocytes Are Partially But Not Fully Activated T Cells J. Immunol., November 1, 2002; 169(9): 4717 - 4722. [Abstract] [Full Text] [PDF] |
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S. Zuklys, G. Balciunaite, A. Agarwal, E. Fasler-Kan, E. Palmer, and G. A. Hollander Normal Thymic Architecture and Negative Selection Are Associated with Aire Expression, the Gene Defective in the Autoimmune-Polyendocrinopathy-Candidiasis-Ectodermal Dystrophy (APECED) J. Immunol., August 15, 2000; 165(4): 1976 - 1983. [Abstract] [Full Text] [PDF] |
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L. Crisa, M. T. McMaster, J. K. Ishii, S. J. Fisher, and D. R. Salomon Identification of a Thymic Epithelial Cell Subset Sharing Expression of the Class Ib HLA-G Molecule with Fetal Trophoblasts J. Exp. Med., July 21, 1997; 186(2): 289 - 298. [Abstract] [Full Text] [PDF] |
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