Major step forwards for vaccine against cervical cancer

December 16, 2004

Dutch researcher Laura Bungener has developed a vaccine against cervical cancer. Vaccinated laboratory animals no longer developed the disease and animals which had already developed a tumour, could be treated with the vaccine.

Cervical cancer is caused by a virus. The vaccines against cervical cancer induce an immune response to proteins from this virus, rendering it harmless. Laboratory animals which had already developed a tumour, could be treated with a vaccination.

Human papillomavirus (HPV) is the virus responsible for cervical cancer. More than one hundred types of the virus are known. Some of these are high-risk types of HPV, which can convert healthy cells into cancer cells. Proteins E6 and E7 from the virus are responsible for this and are an ideal target for treatment because they only occur in malignant cells. The vaccine developed by Bungener, induces a specific immune response against these two proteins.

To test the vaccine, Bungener administered two different vaccines to mice. The 'recombinant Semliki Forest virus' and virosomes from the flu virus. The 'recombinant Semliki Forest virus' induces the production of proteins E6 and E7. The virosomes from the flu virus contain the E7 protein.

Both vaccines induced an immune response in mice against these proteins. During the immune response, the animals produce cytotoxic T-lymphocytes that are specific for E6 and E7 and prevent the tumour from growing further. Even mice that already had a tumour could be treated with a vaccination of the 'recombinant Semliki Forest virus'.

Bungener also investigated the mechanism underlying the vaccinations by using model proteins in 'recombinant Semliki Forest virus' and in the virosomes.
-end-
The research was funded by the Netherlands Organisation for Scientific Research.

Bungener et al. Virosome-mediated delivery of protein antigen to dendritic cells. Vaccine 20(17-18):2287-95.

Further information:

Dr Laura Bungener (RUG, Medische Microbiologie)
t: 31-50-363-2738, l.bungener@med.rug.nl
The doctoral thesis was defended on 6 December 2004, supervisor Prof. J.C. Wilschut

Netherlands Organization for Scientific Research

Related Immune Response Articles from Brightsurf:

Boosting chickens' own immune response could curb disease
Broiler chicken producers the world over are all too familiar with coccidiosis, a parasite-borne intestinal disease that stalls growth and winnows flocks.

Cells sacrifice themselves to boost immune response to viruses
Whether flu or coronavirus, it can take several days for the body to ramp up an effective response to a viral infection.

Children's immune response more effective against COVID-19
Children and adults exhibit distinct immune system responses to infection by the virus that causes COVID-19, a finding that helps explain why COVID-19 outcomes tend to be much worse in adults, researchers from Yale and Albert Einstein College of Medicine report Sept.

Which immune response could cause a vaccine against COVID-19?
Immune reactions caused by vaccination can help protect the organism, or sometimes may aggravate the condition.

Obesity may alter immune system response to COVID-19
Obesity may cause a hyperactive immune system response to COVID-19 infection that makes it difficult to fight off the virus, according to a new manuscript published in the Endocrine Society's journal, Endocrinology.

Immune response to Sars-Cov-2 following organ transplantation
Even patients with suppressed immune systems can achieve a strong immune response to Sars-Cov-2.

'Relaxed' T cells critical to immune response
Rice University researchers model the role of relaxation time as T cells bind to invaders or imposters, and how their ability to differentiate between the two triggers the body's immune system.

A novel mechanism that triggers a cellular immune response
Researchers at Baylor College of Medicine present comprehensive evidence that supports a novel trigger for a cell-mediated response and propose a mechanism for its action.

Platelets exacerbate immune response
Platelets not only play a key role in blood clotting, but can also significantly intensify inflammatory processes.

How to boost immune response to vaccines in older people
Identifying interventions that improve vaccine efficacy in older persons is vital to deliver healthy ageing for an ageing population.

Read More: Immune Response News and Immune Response Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.