Nasal IL-12p70 DNA prevents and treats intestinal allergic diarrhea

Academic Article


  • OVA-induced allergic diarrhea occurs as a consequence of over-expression of Th1 inhibitory IL-12p40 monomers and homodimers in the large intestine, establishing a dominant Th2-type environment. In this study, we demonstrate that intranasally administered murine IL-12p70 naked DNA expression plasmids resulted in the synthesis of corresponding cytokine in the large intestinal CD11c+ dendritic cells, leading to the inhibition of Ag-specific Th2-type response for the prevention of allergic diarrhea and the suppression of clinical symptoms including OVA-specific IgE Ab synthesis. The nasal IL-12p70 DNA treatment proved effective even after the establishment of allergic diarrhea. These results suggest that the mucosal administration of naked IL-12p70 DNA plasmid should be considered as a possible preventive and therapeutic treatment for Th2 cell-mediated food allergic diseases in the intestinal tract. Copyright © 2005 by The American Association of Immunologists, Inc.
  • Published In

    Digital Object Identifier (doi)

    Author List

  • Hino A; Fukuyama S; Kataoka K; Kweon MN; Fujihashi K; Kiyono H
  • Start Page

  • 7423
  • End Page

  • 7432
  • Volume

  • 174
  • Issue

  • 11