T cells recognizing polysaccharide-specific B cells function as contrasuppressor cells in the generation of T cell immunity to Pseudomonas aeruginosa

W. G. Powderly, J. R. Schreiber, G. B. Pier, R. B. Markham

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

The cellular interactions involved in the development of T cell-mediated immunity to Pseudomonas aeruginosa have been examined. T cell immunity can be generated by immunizing mice with 10 μg of P. aeruginosa polysaccharide (PS) plus the antimitotic agent vinblastine sulfate. Vinblastine is required to inactivate a population of Ts cells generated by immunization with 10 μg of PS alone. Immunization with either live bacteria or with higher dose (50 μg) of PS without vinblastine also generates T cell immunity; these protocols activate a population of Lyt-1+, 2-, I-J+ T cells which, like vinblastine, counteract the effect of Ts cells. Immunization with 10 μg PS alone fails to activate this T cell subpopulation. When administered at the time of immunization, this subpopulation can render the tolerogenic 10-μg immunization protocols immunogenic. Like previously described contrasuppressor T cells, this T cell subpopulation exhibits an affinity for the lectin Vicia villosa. We have determined, however, that the T cells that act as contrasuppressor cells in this system are directly activated by PS-immune B cells and not by PS Ag. Furthermore, their activity can be removed by adsorption to PS-specific B cell hybridomas. Our studies indicate an important role for B cells in the development of T cell immunity to P. aeruginosa and suggest that a complex idiotype network controls the development of this response.

Original languageEnglish
Pages (from-to)2746-2752
Number of pages7
JournalJournal of Immunology
Volume140
Issue number8
StatePublished - Jan 1 1988

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