These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Anti-CD3 single-chain Fv/interleukin-18 fusion DNA induces anti-mycobacterial resistance via efficient interferon-gamma production in BALB/c mice infected with Mycobacterium avium.
    Author: Kim SH, Cho D, Kim TS.
    Journal: Vaccine; 2006 Apr 12; 24(16):3365-73. PubMed ID: 16481075.
    Abstract:
    T helper type 1 (Th1) cell-mediated immune response performs a critical role in the induction of host defenses against a variety of intracellular pathogens. We recently demonstrated that the linkage between interleukin (IL)-18 and anti-CD3sFv genes confined the effect of IL-18 to the CD3+ T cells, resulting in the efficient induction of Thl immune responses. In this study, we attempted to determine whether the anti-CD3 single-chain Fv/IL-18 fusion DNA (pAnti-CD3sFv/IL-18) could stimulate resistance to Mycobacterium avium infection in genetically susceptible BALB/c mice. Immunization with pAnti-CD3sFv/IL-18 DNA during intranasal infection with M. avium resulted in a significant reduction in the bacterial load in the lung throughout the entire 10-week observation period. Immunization with pAnti-CD3sFv/IL-18 DNA induced and maintained significantly higher levels of cytotoxic activity and nitric oxide production by the lung cells, as compared with the injection of pAnti-CD3sFv DNA, or of a simple mixture of pAnti-CD3sFv DNA and pIL-18 DNA. Furthermore, the lung cells of the mice injected with pAnti-CD3sFv/IL-18 DNA exhibited persistent production of IFN-gamma. Treatment with anti-IFN-gamma antibody resulted in an abrogation of anti-mycobacterial effects in mice injected with pAnti-CD3sFv/IL-18 DNA. These results indicate that vaccination with the pAnti-CD3sFv/IL-18 fusion DNA induces significant resistance to M. avium infection, via the production of IFN-gamma in CD4+ T cells.
    [Abstract] [Full Text] [Related] [New Search]