Nano Archive

Covalently linked au nanoparticles to a viral vector: Potential for combined photothermal and gene cancer therapy

Everts, M and Saini, V and Leddon, J. L. and Kok, R. J. and Stoff-Khalili, M and Preuss, M. A. and Millican, C. L. and Perkins, G and Brown, J. M. and Bagaria, H and Nikles, D. E. and Johnson, D. T. and Zharov, V. P. and Curiel, D. T. (2006) Covalently linked au nanoparticles to a viral vector: Potential for combined photothermal and gene cancer therapy. NANO LETTERS, 6 (4). pp. 587-591.

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Abstract

Hyperthermia can be produced by near-infrared laser irradiation of gold nanoparticles present in tumors and thus induce tumor cell killing via a bystander effect. To be clinically relevant, however, several problems still need to be resolved, In particular, selective delivery and physical targeting of gold nanoparticles to tumor cells are necessary to improve therapeutic selectivity. Considerable progress has been made with respect to retargeting adenoviral vectors for cancer gene therapy. We therefore hypothesized that covalent coupling of gold nanoparticles to retargeted adenoviral vectors would allow selective delivery of the nanoparticles to tumor cells, thus feasibilizing hyperthermia and gene therapy as a combinatorial therapeutic approach. For this, sulfo-N-hydroxysuccinimide labeled gold nanoparticles were reacted to adenoviral vectors encoding a luciferase reporter gene driven by the cytomegalovirus promoter (AdCMVLuc). We herein demonstrate that covalent coupling could be achieved, while retaining virus infectivity and ability to retarget tumor-associated antigens. These results indicate the possibility of using adenoviral vectors as carriers for gold nanoparticles.

Item Type:Article
Subjects:Biomedical Science > Nanobiotechnology
Biomedical Science > Nanotechnology for human health
ID Code:2769
Deposited By:Lesley Tobin
Deposited On:09 Jan 2009 17:03
Last Modified:19 Feb 2009 11:47

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