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Updated: Jul 10, 2025
Viral Nanoparticles for In vivo Tumor Imaging
Published on: November 16, 2012
Progress in oncolytic viruses modified with nanomaterials for intravenous application
Liting Chen1,2,3, Zhijun Ma4, Chen Xu1,2,3
1Department of Surgical Oncology and General Surgery, Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors, Ministry of Education, The First Affiliated Hospital of China Medical University, Shenyang 110001, China.
Abstract:
In oncolytic virus (OV) therapy, a critical component of tumor immunotherapy, viruses selectively infect, replicate within, and eventually destroy tumor cells. Simultaneously, this therapy activates immune responses and mobilizes immune cells, thereby eliminating residual or distant cancer cells. However, because of OVs' high immunogenicity and immune clearance during circulation, their clinical applications are currently limited to intratumoral injections, and their use is severely restricted. In recent years, numerous studies have used nanomaterials to modify OVs to decrease virulence and increase safety for intravenous injection. The most commonly used nanomaterials for modifying OVs are liposomes, polymers, and albumin, because of their biosafety, practicability, and effectiveness. The aim of this review is to summarize progress in the use of these nanomaterials in preclinical experiments to modify OVs and to discuss the challenges encountered from basic research to clinical application.
Insights
Oncolytic virus (OV) therapy uses modified viruses to target cancer cells. Nanomaterial modifications enhance OV safety and efficacy for intravenous delivery, overcoming current clinical limitations.
Area of Science:
- Oncology
- Immunotherapy
- Nanomedicine
- Virology
Background:
- Oncolytic virus (OV) therapy is a promising cancer immunotherapy that utilizes viruses to selectively destroy tumor cells and stimulate anti-tumor immune responses.
- Current clinical applications of OVs are restricted to intratumoral injections due to high immunogenicity and rapid immune clearance during systemic circulation.
- Nanomaterial modification of OVs offers a strategy to improve their safety and enable intravenous administration.
Purpose of the Study:
- To review recent advances in using nanomaterials to modify OVs for enhanced cancer therapy.
- To summarize preclinical findings on liposome, polymer, and albumin-modified OVs.
- To discuss challenges and future directions for translating nanomodified OVs from basic research to clinical practice.
Main Methods:
- Review of preclinical studies investigating nanomaterial-modified oncolytic viruses.
- Focus on modifications using liposomes, polymers, and albumin for improved OV delivery and safety.
- Analysis of strategies aimed at overcoming limitations of traditional OV therapy.
Main Results:
- Nanomaterial modifications, including liposomes, polymers, and albumin, have shown potential in decreasing OV virulence and enhancing safety for systemic delivery.
- Preclinical studies demonstrate improved biodistribution and tumor targeting of nanomodified OVs.
- These modifications facilitate intravenous injection, expanding the therapeutic potential of OVs.
Conclusions:
- Nanomaterial engineering represents a key strategy to overcome the clinical limitations of oncolytic virus therapy.
- Further research is needed to address challenges in preclinical-to-clinical translation for nanomodified OVs.
- Successful translation could significantly broaden the application of OV-based cancer immunotherapy.
