Armed therapeutic viruses: strategies and challenges to arming oncolytic viruses with therapeutic genes

Terry W Hermiston1, Irene Kuhn

  • 1Berlex Biosciences, Richmond, California 94804-0099, USA. terry_hermiston@berlex.com

Cancer Gene Therapy
|January 11, 2003
PubMed

Insights

Armed oncolytic viruses, engineered to express therapeutic genes, show promise for enhancing cancer treatment potency. This review explores their potential, synergies, and delivery challenges for improved cancer therapy.

Area of Science:

  • Oncology
  • Virology
  • Biotechnology

Background:

  • Oncolytic viruses are promising cancer therapeutics due to their tumor-selective replication.
  • Clinical trials show oncolytic virus therapy is safe but lacks optimal efficacy.
  • Enhancing viral lytic potential is key to improving therapeutic outcomes.

Purpose of the Study:

  • To review the potential of armed oncolytic viruses for cancer therapy.
  • To discuss genetically engineered therapeutic transgene expression from viruses.
  • To explore strategies for increasing the potency of oncolytic viral agents.

Main Methods:

  • Literature review of armed oncolytic virus strategies.
  • Analysis of therapeutic transgene expression from engineered viruses.
  • Discussion of delivery synergies and hurdles for replicating viral vectors.

Main Results:

  • Armed oncolytic viruses can enhance therapeutic transgene expression within tumors.
  • Specific classes of therapeutic genes are identified for viral engineering.
  • Potential benefits and challenges of armed oncolytic virus delivery are outlined.

Conclusions:

  • Armed oncolytic viruses represent a strategy to improve cancer treatment efficacy.
  • Further research is needed to overcome delivery hurdles and optimize transgene expression.
  • Engineered oncolytic viruses hold significant potential for future cancer therapeutics.

Related Concept Videos

Tumor Immunotherapy01:27

Tumor Immunotherapy

Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
Microorganisms in Medicine and Therapeutics01:29

Microorganisms in Medicine and Therapeutics

Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.
Gene Therapy01:22

Gene Therapy

Gene therapy is a technique where a gene is inserted into a person’s cells to prevent or treat a serious disease. The added gene may be a healthy version of the gene that is mutated in the patient, or it could be a different gene that inactivates or compensates for the patient’s disease-causing gene. For example, in patients with severe combined immunodeficiency (SCID) due to a mutation in the gene for the enzyme adenosine deaminase, a functioning version of the gene can be inserted. The...
Cancer Therapies02:49

Cancer Therapies

Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
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...
Cancer Vaccines01:30

Cancer Vaccines

Cancer treatment vaccines are a rapidly evolving field that offers a promising approach to immunotherapy. Unlike traditional vaccines that prevent diseases, cancer treatment vaccines are designed to treat existing cancers by stimulating the immune system to recognize and attack cancer cells.
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...