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

Active Publication Date: 2020-04-10
刘扶东 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, accurately and specifically delivering the right dose of genetic material has been a major challenge

Method used

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  • Remote control of light-triggered virotherapy
  • Remote control of light-triggered virotherapy
  • Remote control of light-triggered virotherapy

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Embodiment

[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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Abstract

Ironized viral particles such as ironized adeno-associated viral particles, which may carry a photosensitizer such as a KillerRed protein, and uses thereof in light-triggered virotherapy against tumor.

Description

[0001] Cross References to Related Applications [0002] This case asserts the benefit of U.S. Provisional Application 62 / 417,946, filed November 4, 2016, the contents of which are hereby incorporated by reference in their entirety. Background technique [0003] In the innovative treatment of cancer, virotherapy is a potential cancer therapeutic agent currently evaluating several viruses from different virus families in clinical trials (Bell et al., Cell Host Microbe, 2014; Russell et al., Nat . Biotechnol., 2012; Miest et al., Nat. Rev. Microbiol., 2014). In most clinical trials of virotherapy, patients receive virotherapy by intratumoral injection (Miest et al., Nat. Rev. Microbiol., 2014). In cancer therapy, enhanced systemic delivery of viruses remains an obstacle to effective virotherapy (Ledford, Nature, 2015; Bell et al., Cell Host Microbe, 2014; Russell et al., Nat. Biotechnol., 2012; Miest et al. al., Nat. Rev. Microbiol., 2014; Kotterman et al., Nat. Rev. Genet., 2...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): A61K9/51A61K9/00A61K41/00A61K47/69A61P35/00
CPCA61K41/0042A61K47/6901A61K47/6923A61K9/0009A61K9/0019A61K9/5115A61K9/5184A61K38/1767A61P35/00A61K41/00A61K41/0057A61N5/062A61N2005/0663C12N2750/14123C12N2750/14132
Inventor杨泮池曾士杰廖子娴
Owner刘扶东