Remote control of light-triggered virotherapy
A technology of virus particles and photosensitizers, applied in the field of remote control of light-triggered virus therapy
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[0068] Clinical virotherapy has been successfully approved by the US Food and Drug Administration (FDA) for cancer treatment, however many improvements are still needed for the broader development of virotherapy. Particular challenges are delivering virotherapy systemically and overcoming the limitations of intratumoral injection, especially complex tumors in sensitive organs. For this purpose, recombinant adeno-associated virus serotype 2 (AAV2) chemically conjugated to iron oxide nanoparticles (about 5 nm) was constructed, which exhibited significant distal guidance ability under magnetic field. Transduction is achieved with microscopic precision. In addition, a gene for producing the light-sensitive protein KillerRed was introduced into the AAV2 gene body to enable photodynamic therapy (PDT); or light-triggered viral therapy. In vivo experiments showed that tail vein injection of "ironized" AAV2-KillerRed's magnetic guidance combined with PDT significantly reduced tumor gr...
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