KSHV (HHV8) vaccine: promises and potential pitfalls for a new anti-cancer vaccine

Corey Casper1, Lawrence Corey2, Jeffrey I Cohen3

  • 1Infectious Disease Research Institute, 1616 Eastlake Ave. East, Suite 400, Seattle, WA, 98102, USA.

NPJ Vaccines
|September 20, 2022
PubMed

Insights

Seven viruses cause 15% of cancers, with Kaposi sarcoma herpesvirus (KSHV) being a key target. Developing a KSHV vaccine could prevent this cancer, especially in vulnerable populations.

Area of Science:

  • Oncology
  • Virology
  • Epidemiology

Background:

  • Seven viruses are responsible for at least 15% of the global cancer burden.
  • Viral cancers are considered preventable or treatable through vaccination.
  • Kaposi sarcoma herpesvirus (KSHV, also known as HHV8) is the exclusive cause of Kaposi sarcoma.

Purpose of the Study:

  • To review findings from an NIH-sponsored workshop on KSHV epidemiology and biology.
  • To highlight KSHV as an overlooked, potentially vaccine-preventable infection.
  • To explore opportunities for cancer prevention through KSHV vaccination.

Main Methods:

  • Review of recent NIH-sponsored workshop findings.
  • Summary of epidemiological data on KSHV.
  • Analysis of KSHV's biological characteristics relevant to vaccine development.

Main Results:

  • KSHV is the sole etiological agent of Kaposi sarcoma.
  • Kaposi sarcoma disproportionately affects resource-poor and marginalized communities.
  • The unique epidemiology of KSHV presents opportunities for targeted cancer prevention.

Conclusions:

  • KSHV represents a significant, vaccine-preventable cancer threat.
  • Development of an effective, affordable, and well-tolerated KSHV vaccine is crucial.
  • Vaccination strategies could alter the course of KSHV-associated cancers globally.

Related Concept Videos

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...
493
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.
643
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...
5.2K
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...
7.9K
Rous Sarcoma Virus (RSV) and Cancer01:03

Rous Sarcoma Virus (RSV) and Cancer

Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand  RNA genome. Its genome consists of four main open...
5.3K
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...
7.8K