Imperial College London
Alternate

Emeritus ProfessorMaryRitter

Faculty of Medicine, Department of Immunology and Inflammation

Emeritus Professor of Immunology
 
 
 
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Contact

 

+44 (0)20 7492 1921m.ritter

 
 
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Location

 

31-35 Kirby StreetLondon EC1N 8TE

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Summary

 

Publications

Citation

BibTex format

@article{Freysdottir:2001:2001/59678,
author = {Freysdottir, J and Ritter, MA},
doi = {2001/59678},
journal = {Dev Immunol},
pages = {75--93},
title = {Antibodies to human thymic epithelium form part of the murine autoreactive repertoire.},
url = {http://dx.doi.org/10.1155/2001/59678},
volume = {8},
year = {2001}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Monoclonal antibody (mAb) MR6 recognises a 200 kDa glycoprotein, gp200-MR6, which is expressed at high levels on the surface of human thymic cortical epithelium. In order to produce further mAbs against the gp200-MR6 molecule, mice were immunised with purified human gp200-MR6, hybridomas produced and supernatants screened for MR6-like reactivity on human thymic sections. Surprisingly this conventional hybridoma technique failed to produce stable hybridoma cells producing MR6-like antibodies. However, antibodies with specificities other than MR6-like were obtained. Three such antibodies (1B2, 3A3 and 4B3) were analysed further. Expression of 1B2-antigen, 3A3-antigen and 4B3-antigen was analysed on skin, tonsil and thymic sections, on cultured thymic epithelial cells (TEC), thymocytes and peripheral blood mononuclear cells (PBMC), and found to be expressed by both lymphocytes and epithelial cell populations. Furthermore, the antigens were also expressed on mouse thymic epithelial cells. The regulation of expression of these antigens was analysed following mitogen or cytokine stimulation of PBMC and cultured TEC, respectively. Expression on T cells was clearly affected by mitogens that mimic activation through the T cell receptor and expression on cultured TEC was affected by T cell-derived cytokines. Thus, the shared epithelial-lymphocyte molecules identified in this study may play a role in the cross-talk between the developing thymocytes and their epithelial microenvironment. The production of mAbs with specificities other than that of purified gp200-MR6 indicates that a wide range of B cells with specificity for components of the human thymic microenvironment exist in the normal mouse. These may detect epitopes that are shared with common pathogens to which the animals are exposed. Alternatively, they may be autoreactive B cells that are normally silent in the absence of T cell help. This help may be provided by T cells specific for human gp200-MR6, or nonspecifica
AU  - Freysdottir,J
AU  - Ritter,MA
DO  - 2001/59678
EP  - 93
PY  - 2001///
SN  - 1044-6672
SP  - 75
TI  - Antibodies to human thymic epithelium form part of the murine autoreactive repertoire.
T2  - Dev Immunol
UR  - http://dx.doi.org/10.1155/2001/59678
UR  - https://www.ncbi.nlm.nih.gov/pubmed/11589312
VL  - 8
ER  -
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