Marine & Environmental Sciences Faculty Articles
A Targeted and Adjuvanted Nanocarrier Lowers the Effective Dose of Liposomal Amphotericin B and Enhances Adaptive Immunity in Murine Cutaneous Leishmaniasis
Document Type
Article
Publication Title
International Journal of Infectious Diseases
ISSN
1201-9712
Publication Date
12-1-2013
Keywords
Immunochemotherapy, Nanocarrier, Adoptive immunity, Intracellular, Obligate intracellular parasites, Leishmaniasis, Vaccine
Abstract
Background: Amphotericin B (AmB), the most effective drug against leishmaniasis, has serious toxicity. As Leishmania species are obligate intracellular parasites of antigen presenting cells (APC), an immunopotentiating APC-specific AmB nanocarrier would be ideally suited to reduce the drug dosage and regimen requirements in leishmaniasis treatment. Here, we report a nanocarrier that results in effective treatment shortening of cutaneous leishmaniasis in a mouse model, while also enhancing L. major specific T-cell immune responses in the infected host.
Methods: We used a Pan-DR-binding epitope (PADRE)-derivatized-dendrimer (PDD), complexed with liposomal amphotericin B (LAmB) in an L. major mouse model and analyzed the therapeutic efficacy of low-dose PDD/ LAmB vs full dose LAmB.
Results: PDD was shown to escort LAmB to APCs in vivo, enhanced the drug efficacy by 83% and drug APC targeting by 10-fold and significantly reduced parasite burden and toxicity. Fortuitously, the PDD immunopotentiating effect significantly enhanced parasite-specific T-cell responses in immunocompetent infected mice.
Conclusions: PDD reduced the effective dose and toxicity of LAmB and resulted in elicitation of strong parasite specific T-cell responses. A reduced effective therapeutic dose was achieved by selective LAmB delivery to APC, bypassing bystander cells, reducing toxicity and inducing antiparasite immunity.
DOI
10.1093/infdis/jit378
Volume
208
Issue
11
First Page
1914
Last Page
1922
Additional Comments
DOD grant #: DAMD 17-03-20021; National Institutes of Health grant #: P30AI073961
NSUWorks Citation
Pirouz M. Daftarian, Geoffrey W. Stone, Leticia Kovalski, Manoj Kumar, Aram Vosoughi, Maitee Urbieta, Patricia Blackwelder, Emre Dikici, Stephanie Duffort, Richard Boodoo, Alheli Rodriguez-Cortes, Vance Lemmon, Sapna Deo, Jordi Alberola, Victor L. Perez, Sylvia Daunert, and Arba L. Ager. 2013. A Targeted and Adjuvanted Nanocarrier Lowers the Effective Dose of Liposomal Amphotericin B and Enhances Adaptive Immunity in Murine Cutaneous Leishmaniasis .International Journal of Infectious Diseases , (11) : 1914 -1922. https://nsuworks.nova.edu/occ_facarticles/446.
Comments
©The Author 2013. Published by Oxford University Press on behalf of the Infectious Diseases Society of America. All rights reserved.