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HIV drug could prevent cervical cancer
Date:5/3/2011

A widely used HIV drug could be used to prevent cervical cancer caused by infection with the human papilloma virus (HPV), say scientists.

University of Manchester researchers, working with colleagues in Canada, have discovered how the antiviral drug lopinavir attacks HPV by switching on a natural viral defence system in infected cells.

The study, published in the journal Antiviral Therapy, builds on the team's previous work in 2006 that first identified lopinavir as a potential therapeutic for HPV-related cervical cancer following laboratory tests on cell cultures.

"Since publishing our earlier work, we have now found that lopinavir selectively kills HPV-infected, non-cancerous cells, while leaving healthy cells relatively unaffected," said Dr Ian Hampson, from Manchester's School of Cancer and Enabling Sciences.

"This is a very significant finding as these cells are not cancer cells but are the closest thing to being like the cells found in a pre-cancerous HPV infection of the cervix. In addition we were also able to show that lopinavir kills these HPV-infected cells by re-activating a well-known antiviral system that is suppressed by HPV."

In many developing countries, HPV-related cervical cancer is still one of the most common women's cancers accounting for approximately 290,000 deaths per year worldwide. The same virus also causes a significant proportion of cancers of the mouth and throat in both men and women and this disease is showing an alarming increase in developed countries, such as the UK, where it is now more than twice as common as cervical cancer.

Although in the developed world vaccination programmes against HPV are well underway, these are not effective in women already infected with HPV. Furthermore, the current vaccines do not protect against all types of HPV and they are expensive, which will limit their use in countries with limited resources. A cheap and preferably self-administ
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Contact: Aeron Haworth
aeron.haworth@manchester.ac.uk
44-161-275-8383
University of Manchester
Source:Eurekalert

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