Adenoviral vector-based strategies for cancer therapy

Anurag Sharma1, Manish Tandon, Dinesh S Bangari

  • 1Department of Comparative Pathobiology, and Bindley Bioscience Center, School of Veterinary Medicine, Purdue University, West Lafayette, IN 47907, USA.

Current Drug Therapy
|February 18, 2010
PubMed

Insights

Adenoviral (Ad) vectors show promise for cancer gene therapy, but challenges like immunogenicity and targeting must be addressed for effective clinical use.

Area of Science:

  • Oncology
  • Gene Therapy
  • Virology

Background:

  • Cancer treatment remains a significant challenge, with current methods having limited efficacy and severe side effects.
  • Gene therapy offers a promising novel approach for cancer intervention.
  • Adenoviral (Ad) vectors are efficient natural gene delivery systems, making them a primary choice for cancer gene therapy.

Purpose of the Study:

  • To review the potential strengths and limitations of adenoviral (Ad) vectors in cancer therapy.
  • To discuss advancements in overcoming Ad vector-related challenges for clinical application.

Main Methods:

  • Review of clinical and preclinical findings utilizing Ad vectors for various cancer gene therapy strategies.
  • Analysis of strategies to overcome Ad vector limitations, including enhanced targeting and conditional replication.

Main Results:

  • Ad vectors have demonstrated promising results in preclinical and clinical studies for tumor suppressor gene therapy, suicide gene therapy, oncolysis, immunotherapy, anti-angiogenesis, and RNA interference.
  • Key limitations include increased immunogenicity, pre-existing anti-Ad immunity in the population, and lack of specific tumor targeting.

Conclusions:

  • Adenoviral vectors hold significant potential for cancer gene therapy but require further development to address immunogenicity and targeting issues.
  • Ongoing research focuses on modifying Ad vectors for improved safety and efficacy in clinical settings.

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.
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...
Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against specific...
Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against specific...
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...
Mechanisms of Retrovirus-induced Cancers01:51

Mechanisms of Retrovirus-induced Cancers

Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...