Display Settings:

Format

Send to:

Choose Destination
    J Immunol. 2010 Aug 1;185(3):1701-10. Epub 2010 Jul 2.

    Applying TLR synergy in immunotherapy: implications in cutaneous leishmaniasis.

    Source

    Infectious Disease Research Institute, Seattle, WA 98104, USA.

    Abstract

    Therapy of intracellular pathogens can be complicated by drug toxicity, drug resistance, and the need for prolonged treatment regimens. One approach that has shown promise is immunotherapy. Leishmaniasis, a vector-borne disease ranked among the six most important tropical infectious diseases by the World Health Organization, has been treated clinically with crude or defined vaccine preparations or cytokines, such as IFN-gamma and GM-CSF, in combination with chemotherapy. We have attempted to develop an improved and defined immunotherapeutic using a mouse model of cutaneous leishmaniasis. We hypothesized that immunotherapy may be improved by using TLR synergy to enhance the parasite-specific immune response. We formulated L110f, a well-established Leishmania poly-protein vaccine candidate, in conjunction with either monophosphoryl lipid A, a TLR4 agonist, or CpG, a TLR9 agonist, or a combination of these, and evaluated anti-Leishmania immune responses in absence or presence of active disease. Only mice treated with L110f plus monophosphoryl lipid A-CpG were able to induce a strong effective T cell response during disease and subsequently cured lesions and reduced parasite burden when compared with mice treated with L110f and either single adjuvant. Our data help to define a correlate of protection during active infection and indicate TLR synergy to be a potentially valuable tool in treating intracellular infections.

    PMID:
    20601594
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC3109724
    Free PMC Article

    Images from this publication.See all images (7) Free text

    Figure 1
    Figure 3
    Figure 5
    Figure 7
    Figure 2
    Figure 4
    Figure 6

      Supplemental Content

      Icon for HighWire Press Icon for PubMed Central

      Save items

      loading

      Recent activity

      Your browsing activity is empty.

      Activity recording is turned off.

      Turn recording back on

      See more...
      Write to the Help Desk