Abstract：
:As radio- and chemotherapy-based cancer treatments affect both tumors and healthy tissue, cancer immunotherapy attempts to specifically enhance the natural immune response to tumor cells. In mouse models of cancer, we tested uniform dimercaptosuccinic acid (DMSA)-coated monodisperse magnetic nanoparticles as a delivery system for the anti-tumorigenic cytokine IFN-γ. IFN-γ-adsorbed DMSA-coated magnetic nanoparticles were targeted to the tumor site by application of an external magnetic field. We analyzed nanoparticle biodistribution before and after IFN-γ conjugation, as well as the efficiency of nanoparticle accumulation in tumors, IFN-γ release in the area of interest, and the effects of both on tumor development. At the tumor site, we observed a high degree of nanoparticle accumulation and of cytokine delivery, which led to increased T cell and macrophage infiltration and promoted an anti-angiogenic effect. The combined action led to a notable reduction in tumor size. Our findings indicate that IFN-γ-adsorbed DMSA-coated magnetite nanoparticles can be used as an efficient in vivo drug delivery system for tumor immunotherapy.
journal_name
Biomaterialsjournal_title
Biomaterialsauthors
Mejías R,Pérez-Yagüe S,Gutiérrez L,Cabrera LI,Spada R,Acedo P,Serna CJ,Lázaro FJ,Villanueva A,Morales Mdel P,Barber DFdoi
10.1016/j.biomaterials.2011.01.008subject
Has Abstractpub_date
2011-04-01 00:00:00pages
2938-52issue
11eissn
0142-9612issn
1878-5905pii
S0142-9612(11)00009-3journal_volume
32pub_type
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