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Updated: Aug 9, 2026
Viral Nanoparticles for In vivo Tumor Imaging
Published on: November 16, 2012
Host-cell-assisted construction of a folate-engineered nanocarrier based on viral light particles for targeted cancer
1Translational Medical Center for Stem Cell Therapy and Institute for Regenerative Medicine, Shanghai East Hospital, Tongji University School of Medicine, Collaborative Innovation Center for Brain Science, Tongji University, 1800 Yuntai Road, Shanghai 200123, People's Republic of China.
Abstract:
Targeted cancer therapy has aroused the broad interest of researchers due to its accuracy in specific tumor targeting and its few side effects on normal cells. In the last decades, oncolytic viral light particles (L-particles) have been transformed into smart nanocarriers for targeted drug delivery. However, these L-particles, similar to the oncolytic viruses that they are derived from, can only recognize tumor cells expressing corresponding receptors, severely limiting their universal application. Although modification of targeting agents onto their envelope can overcome this limitation, it is still a great challenge to do so without interfering with their biofunction since the envelope is fragile. Herein, a host-cell-assisted strategy is proposed to construct folate-engineered nanocarriers (F-L-particles) with their biofunctions maintained to the largest extent. The F-L-particles were further multi-functionalized by encapsulating ultrasmall near-infrared quantum dots and antitumor drugs in them for tumor real-time imaging and therapy. Such a moderate, efficient and convenient cell-based strategy facilitates the development and widespread application of these bio-nanocarriers in the field of targeted cancer therapy, and drives the interdisciplinary studies of nanotechnology, chemistry, and virology.
Insights
Researchers developed folate-engineered nanocarriers (F-L-particles) using a host-cell strategy. These particles enable targeted cancer therapy with imaging and drug delivery, overcoming limitations of traditional nanocarriers.
Area of Science:
- Nanotechnology
- Virology
- Oncology
- Materials Science
Background:
- Targeted cancer therapy offers improved efficacy and reduced side effects compared to traditional treatments.
- Oncolytic viral light particles (L-particles) are promising nanocarriers for drug delivery but face limitations in universal tumor targeting.
- Modifying L-particle envelopes for targeting is challenging due to their fragility and potential impact on biofunction.
Purpose of the Study:
- To develop a novel host-cell-assisted strategy for engineering folate-targeted L-particles (F-L-particles).
- To maintain the biofunctionality of L-particles while enhancing their tumor-targeting capabilities.
- To create multi-functional nanocarriers for simultaneous tumor imaging and therapy.
Main Methods:
- A host-cell-assisted strategy was employed to create folate-engineered L-particles (F-L-particles).
- Ultrasmall near-infrared quantum dots and antitumor drugs were encapsulated within the F-L-particles.
- The biofunctionality and targeting efficiency of the F-L-particles were evaluated.
Main Results:
- The host-cell-assisted strategy successfully produced F-L-particles with preserved biofunctions.
- F-L-particles demonstrated enhanced targeting of tumor cells.
- The engineered nanocarriers effectively facilitated real-time tumor imaging and drug delivery for cancer therapy.
Conclusions:
- A moderate, efficient, and convenient cell-based strategy enables the development of bio-nanocarriers for targeted cancer therapy.
- Folate-engineered L-particles offer a promising platform for advanced cancer treatment, integrating imaging and therapeutic capabilities.
- This approach facilitates interdisciplinary research in nanotechnology, chemistry, and virology for cancer therapy.
