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Researchers discover new weapon in fight against cervical cancer
Date:5/30/2013

Scientists at the University of Leeds have found a way to target and destroy a key protein associated with the development of cervical and other cancers.

The E7 protein is produced early in the lifecycle of the human papillomavirus (HPV) and blocks the body's natural defences against the uncontrolled division of cells that can lead to cancer.

Researchers at the University of Leeds' School of Molecular and Cellular Biology have synthesised a molecule, called an RNA aptamer, that latches onto the carcinogenic protein and targets it for destruction, significantly reducing its presence in cells in the laboratory derived from cervical cancers.

There are many types of human papillomavirus. Some are transmitted by sexual contact and associated not only with cervical cancer but also head and neck cancer. Although an increasing proportion of young women in the United Kingdom are vaccinated against the virus, most women in their mid-20s or older are not vaccinated and many may already be HPV positive.

"We therefore need to maintain screening and to develop novel therapeutic strategies," lead researcher Dr Nicola Stonehouse said. "Currently, if you have advanced cervical cancer or head and neck cancerboth of which are associated with human papillomavirusyou really have little choice but surgery. If we can use this aptamer to target the carcinogenic protein, we might be talking about much less radical surgery in the future."

Aptamers are a relatively new tool for molecular biologists and a topic of intense research interest. Like the much better understood antibodies, aptamers can identify and target other molecules as well as viruses and bacteria. However, unlike traditional antibodies, they offer the possibility of insertion into live cells and can be artificially designed in the test tube.

The Leeds team, which received funding from Yorkshire Cancer Research and the BBSRC, was originally looking for an aptamer fo
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Contact: Chris Bunting
c.j.bunting@leeds.ac.uk
44-113-343-2049
University of Leeds
Source:Eurekalert

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