International Immunology, Vol. 15, No. 3, pp. 373-382,
March 2003
© 2003 Japanese Society for Immunology
Expansion of human 
T cells after in vitro stimulation with Campylobacter jejuni
Departments of 1 Neurology and 2 Immunology, University Medical Center Utrecht, 3508 GA Utrecht, The Netherlands 3 Departments of Neurology and Immunology, Erasmus University Rotterdam, 3000 VB, Rotterdam, The Netherlands 4 Rijksinstituut voor Volksgezondheid en Milieu, 3720 BA, Bilthoven, The Netherlands
Correspondence to: L. H. Van den Berg; E-mail: l.h.vandenberg{at}neuro.azu.nl
Transmitting editor: K. Sugamura
Campylobacter jejuni is currently the prime cause of food-borne bacterial gastro-enteritis. An important complication of C. jejuni enteritis is GuillainBarré syndrome (GBS), an immune-mediated disorder of peripheral nerve tissue. Because little is known about T cell reactivity to C. jejuni, we have analyzed the in vitro immune response of normal individuals against five isolates of C. jejuni representing five different serotypes. We found a preferential expansion of peripheral blood 
T cells after exposure to crude sonicates of all five C. jejuni serotypes. Expansion of 
T cells was dependent on the presence of CD4+/
ß+ T cells in the cultures or addition of exogenous IL-2 or IL-15. C. jejuni stimulation was mediated via the TCR and appeared to be induced by a non-proteinaceous bacterial antigen, most likely of phosphoantigenic origin.
Keywords: bacterial serotype, CD4+
ß T cells, GuillainBarré syndrome, IL-2, IL-15
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