Navigation Links
Scientists bring cancer cells back under control
Date:1/18/2011

Scientists at The University of Nottingham have brought cancer cells back under normal control by reactivating their cancer suppressor genes. The discovery could form a powerful new technology platform for the treatment of cancer of the breast and other cancers.

Breast cancer is diagnosed in about 1.4 million women throughout the world every year, with half a million dying from the disease. A common cause of cancer is when cells are altered or mutated and the body's tumour suppressor genes are switched off.

Research, published today in the Journal Molecular Cancer, reveals how Dr Cinzia Allegrucci from the School of Veterinary Science and Medicine and Dr Andrew Johnson in the Centre for Genetics and Genomics reactivated tumour suppressor genes and stopped the cancer from growing by treating them with Axolotl oocyte extract. After 60 days there was still no evidence of cancerous growth.

Cancers occur when the mechanisms that control normal cell division are mutated. The process of cell division is controlled by specific genes and these are turned "on" or "off" depending on their function. Among the most important of these genes are tumour suppressor genes. These genes repress the development of cancers and normally act as a control point in the cell division cycle. Therefore, the switching off of tumour suppressor genes is a common cause of cancers, including breast cancer.

Dr Allegrucci, a lecturer in molecular genetics and cell biology, said: "The on/off switch in genes is controlled by the modification of proteins that are bound to the DNA in a cell so called epigenetic modifications. Tumour suppressor genes in many breast cancers are switched off by epigenetic marks, which is the underlying cause of tumours. We sought to reverse this process, activating the tumour suppressor genes, in hope of stopping cancerous cell divisions."

Dr Johnson said: "To do this we used novel technology that makes use of the eggs of the axolotl salamander. Over the years Dr Johnson's lab has shown that humans evolved from animals that closely resemble axolotls, and because of this the proteins in axolotls are very similar to those in humans. Axolotl oocytes which are the eggs prior to ovulation are packed with molecules that have very powerful epigenetic modifying activity. Previously Johnson's lab showed that extracts prepared from these oocytes have powerful capacity to change epigenetic marks on the DNA of human cells.

And, in a breakthrough, they showed it is important to use oocytes from the ovary, because if the oocytes are ovulated these activities are lost. We thought that by treating cancer cells with extracts made from axolotl oocytes we could reverse the epigenetic marks on tumour suppressor genes, causing these genes to reactivate, and thereby stopping the cancerous cell growth."

The identification of the proteins responsible for this tumour reversing activity in axolotl oocytes is a major goal of future research which could form a powerful new technology platform for the treatment of cancers from the breast, and other tissues.


'/>"/>

Contact: Lindsay Brooke
44-115-951-5751
University of Nottingham
Source:Eurekalert

Related medicine news :

1. Scientists Pinpoint Area of Brain That Fears Losing Money
2. Scientists Discover How HIV Is Transmitted Between Men
3. Prevention Is Key Research Goal for Premature Babies, Scientists Say
4. Scientists Discover Molecular Pathway for Organ Tissue Regeneration and Repair
5. Scientists find donut-shaped structure of enzyme involved in energy metabolism
6. Neuroscientists reveal new links that regulate brain electrical activity
7. Two UCSF Scientists to Receive Prestigious Dementia Research Honor
8. Johns Hopkins scientists develop personalized blood tests for cancer using whole genome sequencing
9. Scientists Spot Genetic Fingerprints of Individual Cancers
10. Scientists Unravel Mysteries of Intelligence
11. MSU scientists develop more effective method of predicting lead-poisoning risk
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/26/2016)... ... June 27, 2016 , ... Quality metrics are proliferating in cancer ... they remain in the eye of the beholder, according to experts who offered insights ... American Journal of Managed Care. For the full issue, click here . , ...
(Date:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... ... fertility once they have been diagnosed with endometriosis. These women need a treatment ... also require a comprehensive approach that can help for preservation of fertility and ...
(Date:6/25/2016)... , ... June 25, 2016 , ... First Choice ... States, named Dr. Sesan Ogunleye, as the Medical Director of its new Mesquite-Samuell Farm ... Medical Director of our new Mesquite location,” said Dr. James M. Muzzarelli, Executive Medical ...
(Date:6/24/2016)... ... June 24, 2016 , ... A recent article published June 14 ... The article goes on to state that individuals are now more comfortable seeking to ... operations such as calf and cheek reduction. The Los Angeles area medical group, Beverly ...
(Date:6/24/2016)... ... , ... Global law firm Greenberg Traurig, P.A. announced that 20 Florida attorneys ... peers for this recognition are considered among the top 2 percent of lawyers practicing ... members of this year’s Legal Elite Hall of Fame: Miami Shareholders Mark D. ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... BEVERLY HILLS, Calif. , June 23, 2016 ... faced the many challenges of the current process. Many of ... option because of the technical difficulties and high laboratory costs ... would have to offer it at such a high cost ... to afford it. Dr. Parsa Zadeh , ...
(Date:6/23/2016)... , June 23, 2016 ... CAPR ), a biotechnology company focused on ... today announced that patient enrollment in its ongoing ... Duchenne) has exceeded 50% of its 24-patient target. ... in the third quarter of 2016, and to ...
(Date:6/23/2016)... -- Astellas today announced the establishment of Astellas Farma Colombia (AFC), a new affiliate with operations headquartered in ... . ... ... ... Astellas is ...
Breaking Medicine Technology: