Related Experiment Video
Updated: Mar 14, 2026

Viral Nanoparticles for In vivo Tumor Imaging
Published on: November 16, 2012
Viruses as nanomedicine for cancer
Narayanasamy Badrinath1, Jeong Heo2, So Young Yoo3
1BIO-IT Foundry Technology Institute.
Abstract:
Oncolytic virotherapy, a type of nanomedicine in which oncolytic viruses (OVs) are used to selectively infect and lyse cancer cells, is an emerging field in cancer therapy. Some OVs exhibit a specific tropism for cancer cells, whereas others require genetic modification to enhance their binding with and entry into cancer cells. OVs both kill tumor cells and induce the host's immune response against tumor cells. Armed with antitumor cellular molecules, antibodies, and/or in combination with anticancer drugs, OVs can accelerate the lysis of cancer cells. Among the OVs, vaccinia virus has been the focus of preclinical and clinical research because of its many favorable properties. In this review, the basic mechanisms of action of OVs are presented, including their entry, survival, tumor lysis, and immune activation, and the latest research in vaccinia virus-based virotherapy and its status as an anticancer nanomedicine in prospective clinical trials are discussed.
Insights
Oncolytic virotherapy uses oncolytic viruses (OVs) to target and destroy cancer cells, stimulating an immune response. Vaccinia virus shows promise as an anticancer nanomedicine in clinical trials.
Area of Science:
- Oncolytic virotherapy
- Nanomedicine
- Cancer therapy
Background:
- Oncolytic viruses (OVs) are emerging as a novel cancer treatment.
- OVs selectively infect and lyse cancer cells, potentially requiring genetic modification for enhanced efficacy.
- OVs can also stimulate the host immune system against tumors.
Purpose of the Study:
- To review the mechanisms of oncolytic virotherapy.
- To discuss the latest research on vaccinia virus-based virotherapy.
- To evaluate the status of vaccinia virus as an anticancer nanomedicine in clinical trials.
Main Methods:
- Review of basic mechanisms of OV action (entry, survival, lysis, immune activation).
- Analysis of current research in vaccinia virus-based oncolytic virotherapy.
- Examination of clinical trial data for vaccinia virus as a nanomedicine.
Main Results:
- OVs demonstrate dual action: direct tumor cell killing and induction of anti-tumor immunity.
- Vaccinia virus possesses favorable properties for oncolytic virotherapy.
- Vaccinia virus-based therapies are progressing towards and are in clinical trials.
Conclusions:
- Oncolytic virotherapy, particularly using vaccinia virus, represents a promising nanomedicine approach for cancer treatment.
- Further clinical investigation is warranted to establish the full therapeutic potential of OVs.
- The combination of viral lysis and immune activation offers a potent strategy against cancer.
Related Concept Videos
Cancer Vaccines
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
Cancer Therapies
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
Mechanisms of Retrovirus-induced Cancers
Microorganisms in Medicine and Therapeutics
siRNA - Small Interfering RNAs
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
Targeted Cancer Therapies
There are several types of targeted therapies against...

