Related Experiment Video
Updated: Aug 29, 2026

Growth, Purification, and Titration of Oncolytic Herpes Simplex Virus
Published on: May 13, 2021
Oncolytic herpes viruses as a potential mechanism for cancer therapy
1Department of Microbiology and Immunology, SUNY Upstate Medical University, College of Medicine, Syracuse, NY 13210, USA. loue@mail.upstate.edu
Abstract:
Oncolytic viruses have been considered as a potential form of cancer treatment throughout the last century because of their ability to lyse and destroy tumor cells both in tissue culture and in animal models of cancer. However, it is only during the past decade that new molecular technologies have become available and understanding of genetic and molecular components of these viruses has increased to the point that they can be manipulated and made safe for use in treatment in humans. Thus there has been a revival of the concepts of conditionally replication-competent viruses and suicide gene therapy to supplement currently existing cancer therapies. While a wide variety of viruses have been closely studied for this purpose, herpes simplex virus type-1 (HSV-1) has received particularly close attention. The inherent cytotoxicity of this virus, if harnessed and made to be selective in the context of a tumor microenvironment, makes this an ideal candidate for further development. Furthermore, its large genome size, ability to infect cells with a high degree of efficiency, and the presence of an inherent viral-specific thymidine kinase gene add to its potential capabilities. This review explores work performed in this field and its potential for application in the treatment of cancers in humans.
Insights
Oncolytic viruses, like herpes simplex virus type-1 (HSV-1), show promise for cancer treatment. Advances in molecular technology allow HSV-1 to be safely engineered for targeted tumor cell destruction, offering a new therapeutic avenue.
Area of Science:
- Oncology
- Virology
- Biotechnology
Background:
- Oncolytic viruses have been explored for cancer therapy for decades due to their tumor-lysing capabilities.
- Recent advancements in molecular technologies have enabled the safe manipulation of viruses for human cancer treatment.
- Conditionally replication-competent viruses and suicide gene therapy represent revived strategies to complement existing cancer therapies.
Purpose of the Study:
- To review the progress and potential of oncolytic viruses, specifically herpes simplex virus type-1 (HSV-1), in human cancer treatment.
- To highlight the genetic and molecular advancements that facilitate the safe application of oncolytic virotherapy.
- To explore the suitability of HSV-1 as a candidate for oncolytic virotherapy.
Main Methods:
- Review of scientific literature on oncolytic viruses and their application in cancer therapy.
- Analysis of the properties of herpes simplex virus type-1 (HSV-1) relevant to oncolytic virotherapy.
- Exploration of molecular engineering strategies for enhancing viral selectivity and safety.
Main Results:
- Herpes simplex virus type-1 (HSV-1) possesses inherent cytotoxicity and a large genome, making it a strong candidate for oncolytic virotherapy.
- HSV-1's ability to efficiently infect cells and its inherent viral-specific thymidine kinase gene enhance its therapeutic potential.
- Engineered HSV-1 can be made selective for tumor microenvironments, increasing safety and efficacy.
Conclusions:
- Oncolytic virotherapy, particularly using engineered HSV-1, holds significant potential for treating human cancers.
- Molecular manipulation has advanced the safety and efficacy of oncolytic viruses for clinical application.
- Further research and development of HSV-1-based therapies could lead to novel cancer treatment strategies.
Related Concept Videos
Mechanisms of Retrovirus-induced Cancers
Mechanisms of Retrovirus-induced Cancers
Rous Sarcoma Virus (RSV) and Cancer
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
Rous Sarcoma Virus (RSV) and Cancer
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
Tumor Immunotherapy
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...

