期刊
NANOMATERIALS
卷 13, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/nano13081428
关键词
Tomato Bushy Stunt Virus; plant virus nanoparticles; neuropilin-1; C-end rule; homing peptide; drug delivery systems
In this study, a peptide-guided Tomato Bushy Stunt Virus (TBSV)-based nanocarrier platform was developed for affinity targeting. The TBSV-RPAR nanoparticles specifically bound and internalized in cells positive for the peptide receptor neuropilin-1 (NRP-1). Additionally, the RPAR functionalization allowed the TBSV particles to accumulate in the lung tissue following systemic administration in mice. These findings demonstrate the feasibility of the CendR-targeted TBSV platform for precision delivery of payloads.
Homing peptides are widely used to improve the delivery of drugs, imaging agents, and nanoparticles (NPs) to their target sites. Plant virus-based particles represent an emerging class of structurally diverse nanocarriers that are biocompatible, biodegradable, safe, and cost-effective. Similar to synthetic NPs, these particles can be loaded with imaging agents and/or drugs and functionalized with affinity ligands for targeted delivery. Here we report the development of a peptide-guided Tomato Bushy Stunt Virus (TBSV)-based nanocarrier platform for affinity targeting with the C-terminal C-end rule (CendR) peptide, RPARPAR (RPAR). Flow cytometry and confocal microscopy demonstrated that the TBSV-RPAR NPs bind specifically to and internalize in cells positive for the peptide receptor neuropilin-1 (NRP-1). TBSV-RPAR particles loaded with a widely used anticancer anthracycline, doxorubicin, showed selective cytotoxicity on NRP-1-expressing cells. Following systemic administration in mice, RPAR functionalization conferred TBSV particles the ability to accumulate in the lung tissue. Collectively, these studies show the feasibility of the CendR-targeted TBSV platform for the precision delivery of payloads.
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