The Journal of Experimental Medicine
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Journal of Experimental Medicine, Vol 174, 891-900, Copyright © 1991 by Rockefeller University Press

ARTICLES

Characterization of human T cells reactive with the Mycoplasma arthritidis-derived superantigen (MAM): generation of a monoclonal antibody against V beta 17, the T cell receptor gene product expressed by a large fraction of MAM-reactive human T cells

SM Friedman, MK Crow, JR Tumang, M Tumang, YQ Xu, AS Hodtsev, BC Cole and DN Posnett
Department of Medicine, Hospital for Special Surgery, New York 10021.

While all known microbial superantigens are mitogenic for human peripheral blood lymphocytes (PBL), the functional response induced by Mycoplasma arthritidis-derived superantigen (MAM) is unique in that MAM stimulation of PBL consistently results in T cell-dependent B cell activation characterized by polyclonal IgM and IgG production. These immunostimulatory effects of MAM on the humoral arm of the human immune system warranted a more precise characterization of MAM-reactive human T cells. Using an uncloned MAM reactive human T cell line as immunogen, we have generated a monoclonal antibody (mAb) (termed C1) specific for the T cell receptor V beta gene expressed by the major fraction of MAM- reactive human T cells, V beta 17. In addition, a V beta 17- MAM- reactive T cell population exists, assessed by MAM, induced T cell proliferation and cytotoxic T cell activity. mAb C1 will be useful in characterizing the functional properties of V beta 17+ T cells and their potential role in autoimmune disease.
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