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Trypanosoma cruzi triggers an early type I IFN response in vivo at the site of intradermal infection

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Chessler, A. D., Unnikrishnan, Meera, Bei, A. K., Daily, J. P. and Burleigh, Barbara A. (2009) Trypanosoma cruzi triggers an early type I IFN response in vivo at the site of intradermal infection. The Journal of Immunology, Volume 182 (Number 4). pp. 2288-2296. doi:10.4049/jimmunol.0800621 ISSN 0022-1767.

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Official URL: http://dx.doi.org/10.4049/jimmunol.0800621

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Abstract

Early interactions between the protozoan parasite Trypanosoma cruzi and mammalian hosts at primary sites of infection (skin and mucosal membranes) are predicted to be critical determinants of parasite survival and dissemination in the host. To investigate the early host response triggered by three different strains of T. cruzi at a local infection site, changes in host gene expression were monitored in a murine intradermal infection model using Affymetrix oligonucleotide arrays. Robust induction of IFN-stimulated genes was observed in excised skin 24 h postinfection where the level of IFN-stimulated gene induction was parasite strain-dependent, with the least virulent strain triggering a muted IFN response. Infection of mice immunodepleted of IFN-gamma-producing cells or infection of IFN-gamma-deficient mice had minimal impact on the IFN response generated in T. cruzi-infected mice. In contrast, infection of mice lacking the type I IFN receptor demonstrated that type I IFNs are largely responsible for the IFN response generated at the site of infection. These data highlight type I IFNs as important components of the innate immune response to T. cruzi at the site of inoculation and their role in shaping the early transcriptional response to this pathogen.

Item Type: Journal Article
Subjects: Q Science > QR Microbiology > QR180 Immunology
Divisions: Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Biomedical Sciences > Microbiology & Infection
Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School
Library of Congress Subject Headings (LCSH): Trypanosoma cruzi, Interferon, Skin -- Infections
Journal or Publication Title: The Journal of Immunology
Publisher: American Association of Immunologists
ISSN: 0022-1767
Official Date: February 2009
Dates:
DateEvent
February 2009Published
Volume: Volume 182
Number: Number 4
Page Range: pp. 2288-2296
DOI: 10.4049/jimmunol.0800621
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

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