Role of interferon-gamma in the modulation of the IgE response by 2,4-dinitrophenyl-Bordetella pertussis vaccine in the mouse

European Journal of Immunology
M HagenG H Strejan

Abstract

Immunization of mice with 2,4-dinitrophenyl-Bordetella pertussis (DNP-BP) failed to induce anti-DNP IgE responses. Administration of DNP-BP induced, however, the formation of anti-DNP IgE B memory cells, as demonstrated by adoptive transfer. Furthermore, mice pretreated with DNP-BP and primed with 2 micrograms DNP-ovalbumin (OA) in alum 2 weeks later produced high day-7 anti-DNP IgE levels. These subsided to near undetectable levels by day 12-14. The transient expression of serum IgE levels was accompanied by normal levels of anti-DNP IgG. The anti-OA response induced as a result of priming with DNP-OA in alum was not affected by pretreatment with DNP-BP. IgG subclass analysis revealed that mice pretreated with DNP-BP had elevated levels of IgG2a and reduced levels of IgG1 as compared to control (TNP-keyhole limpet hemocyanin-pretreated) mice. Treatment of mice with an anti-interferon-gamma monoclonal antibody, shortly after immunization with DNP-BP, not only reduced anti-DNP IgG2a levels, but prevented the sharp anti-DNP IgE decline that occurred after priming with DNP-OA in alum. These results suggest that DNP-BP-induced interferon-gamma production modulates Ig isotype expression in vivo in an anti-gen-specific manner.

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Citations

Feb 4, 1998·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·J HiltonI Kimber
May 21, 2003·The Journal of Experimental Medicine·Jennifer Bell, David Gray

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