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  • Title: Induction of helper T cells by pertussis toxin during in vivo priming to insulin.
    Author: Grenier-Brosette N, Bettetini D, Fehlmann M, Cousin JL.
    Journal: Immunopharmacol Immunotoxicol; 1991; 13(1-2):73-86. PubMed ID: 1837558.
    Abstract:
    We have studied the effect of pertussis toxin (PT) on in vivo priming of T lymphocytes to insulin. Mice were immunized with bovine insulin in complete Freund's adjuvant and antigen-specific DNA synthesis was measured in lymphoid cell suspensions from lymph nodes and spleens. Insulin-specific response was greatly enhanced both in spleen and lymph nodes if mice were given PT at the time of immunization. Mice given PT presented 3 times more cells in spleen and 4 times less in lymph nodes. However, the major antigen-specific response was still observed in lymph nodes. PT had a strong mitogenic effect in vitro on lymph node cells but a weak effect on spleen cells indicating that the adjuvant activity of PT involves other effects besides the mitogenic activity.
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