The goal of this project is to develop a multifunctional and multiplexed nanoparticle-based drug delivery system in order to optimize the targeted delivery and controlled release of vaccine in cancer therapy. To achieve this, we intend to functionalize the surface of our recently developed iron oxide nanoparticles with strong nucleophilic amino groups, thus allowing the attachment of multiple copies of identical tumor antigens. Since the nanoparticles have strong magnetic susceptibility, they will provide microanatomical and functional imaging feedback of the delivery and its effect in cancer therapy using magnetic resonance imaging (MRI). Preliminary data indicate that (i) dextran-coated iron oxide nanoparticles are suitable for in vivo tracking of cell migration using MRI;(ii) the method developed and employed in our laboratory enables the tracking of a small number of cells in the lymph nodes;(iii) the novel epoxide amine linker we developed can functionalize dextran-coated iron oxide nanoparticles with amines on the surface. In this proposal, we hypothesize that the multivalency afforded by the aminated iron oxide nanoparticles can serve as a platform for cancer therapy. The tumor antigen-laden nanoparticles will be formulated as an aerosol and distributed to the lungs via inhalation to induce antitumor immunity. These efforts will be pursued to seek answers to the fundamental questions in cell- based therapy such as (i) given the abundance of dendritic cells in the lungs, will this tissue be a suitable destination at which o activate resident DCs and (ii) does the distribution of tumor antigens via inhalation induce sufficient tumor-specific immunotherapy? We will test our hypothesis by pursuing the following specific aims: (1) Functionalize iron nanoparticles with amines and conjugate the tumor antigens on the surface, and formulate the antigen-iron nanoparticles as an aerosol;(2): Develop MRI techniques to assess the distribution of magnetosol vaccine in the lungs using ultra-short spin echo time. Finally, we will test the efficacy of tumor antigen-nanoparticle magnetosol vaccine on tumor-bearing mice and assess tumor response.
This project describes the development of integrated nanotechnology-based platforms for multifunctional and multiplexed vaccine delivery system in cancer. The iron oxide nanoparticles will be derivatized with tumor antigens and distributed to the lungs as aerosol. Magnetic resonance imaging will be used to track the delivery.
|Coffey, Aaron M; Shchepin, Roman V; Truong, Milton L et al. (2016) Open-Source Automated Parahydrogen Hyperpolarizer for Molecular Imaging Using (13)C Metabolic Contrast Agents. Anal Chem 88:8279-88|
|Sakuma, Shinji; Yu, James Y H; Quang, Timothy et al. (2015) Fluorescence-based endoscopic imaging of Thomsen-Friedenreich antigen to improve early detection of colorectal cancer. Int J Cancer 136:1095-103|
|McClure, Richard; Yanagisawa, Daijiro; Stec, Donald et al. (2015) Inhalable curcumin: offering the potential for translation to imaging and treatment of Alzheimer's disease. J Alzheimers Dis 44:283-95|
|Kitamura, Tokio; Sakuma, Shinji; Shimosato, Moe et al. (2015) Specificity of lectin-immobilized fluorescent nanospheres for colorectal tumors in a mouse model which better resembles the clinical disease. Contrast Media Mol Imaging 10:135-43|
|Sakuma, Shinji; Kumagai, Hironori; Shimosato, Moe et al. (2015) Toxicity studies of coumarin 6-encapsulated polystyrene nanospheres conjugated with peanut agglutinin and poly(N-vinylacetamide) as a colonoscopic imaging agent in rats. Nanomedicine 11:1227-36|
|Shchepin, Roman V; Pham, Wellington; Chekmenev, Eduard Y (2014) Dephosphorylation and biodistribution of 1-Â¹Â³C-phospholactate in vivo. J Labelled Comp Radiopharm 57:517-24|
|Friedman, Hannah; Holt, Alex T; Pham, Wellington (2013) Lipid nanoparticles as ideal delivery modules for siRNA. Nanomedicine (Lond) 8:1910-1|
|McClure, Richard A; Chumbley, Chad W; Reyzer, Michelle L et al. (2013) Identification of promethazine as an amyloid-binding molecule using a fluorescence high-throughput assay and MALDI imaging mass spectrometry. Neuroimage Clin 2:620-9|
|Toki, Shinji; Omary, Reed A; Wilson, Kevin et al. (2013) A comprehensive analysis of transfection-assisted delivery of iron oxide nanoparticles to dendritic cells. Nanomedicine 9:1235-44|
|Friedman, Hannah; Holt, Alex T; Pham, Wellington (2013) Using novel fluorescent decay kinetics near-infrared dyes encased in nanoparticles for imaging. Nanomedicine (Lond) 8:1909-10|
Showing the most recent 10 out of 15 publications