Tobacco mosaic virus-based protein nanoparticles and nanorods for chemotherapy delivery targeting breast cancer.

Tobacco mosaic virus-based protein nanoparticles and nanorods for chemotherapy delivery targeting breast cancer.
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DOI:
10.1016/j.jconrel.2016.02.045
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发表时间:
2016-06-10
期刊:
Journal of controlled release : official journal of the Controlled Release Society
影响因子:
--
通讯作者:
Steinmetz NF
Steinmetz NF
中科院分区:
其他
文献类型:
--
作者:
Bruckman MA;Czapar AE;VanMeter A;Randolph LN;Steinmetz NF

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Drug delivery systems are required for drug targeting to avoid adverse effects associated with chemotherapy treatment regimes. Our approach is focused on the study and development of plant virus-based materials as drug delivery systems; specifically, this work focuses on the tobacco mosaic virus (TMV). Native TMV forms a hollow, high aspect-ratio nanotube measuring 300 × 18 nm with a 4 nm-wide central channel. Heat-transformation can be applied to TMV yielding spherical nanoparticles (SNPs) measuring ~50 nm in size. While bioconjugate chemistries have been established to modify the TMV rod, such methods have not yet been described for the SNP platform. In this work, we probed the reactivity of SNPs toward bioconjugate reactions targeting lysine, glutamine/aspartic acid, and cysteine residues. We demonstrate functionalization of SNPs using these chemistries yielding efficient payload conjugation. In addition to covalent labeling techniques, we developed encapsulation techniques, where the cargo is loaded into the SNP during heat-transition from rod-to-sphere. Finally, we developed TMV and SNP formulations loaded with the chemotherapeutic doxorubicin, and we demonstrate the application of TMV rods and spheres for chemotherapy delivery targeting breast cancer.
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