Corporate Banner
Satellite Banner
Technology
Networks
Scientific Communities
 
Become a Member | Sign in
Home>News>This Article
  News
Return

Scientists Discover a Molecular ‘Switch’ in Cancers of the Testis and Ovary

Published: Wednesday, August 07, 2013
Last Updated: Wednesday, August 07, 2013
Bookmark and Share
Research could lead to new drugs to turn ‘switch’ off.

Cambridge scientists have identified an ‘on/off’ switch in a type of cancer which typically occurs in the testes and ovaries called ‘malignant germ cell tumours’. The research was published today, 01 August, in the journal Cancer Research.

Malignant germ cell tumours arise in sperm- or egg-forming cells and usually occur in the reproductive organs, the testes or ovaries. The cancerous tumours are seen in patients of all ages, both in childhood and adulthood.

Although many patients do well after treatment, current chemotherapy treatments can have severe long-term side effects, including hearing loss and damage to the kidneys, lungs and bone marrow. For some patients, outcomes remain poor and testicular cancer continues to be a leading cause of death in young men.

The scientists found that all malignant germ cell tumours contain large amounts of a protein called LIN28. This results in too little of a family of tiny regulator molecules called let-7. In turn, low levels of let-7 cause too much of numerous cancer-promoting proteins in cells. Importantly, the cancer-promoting proteins include LIN28 itself, so there is a vicious cycle that acts as an ‘on’ switch to promote malignancy. The researchers have likened these changes to a ‘cascade effect’, extending down from the large amounts of LIN28 to affect many properties of the cancer cells.

The researchers also discovered that by reducing amounts of the protein LIN28, or by directly increasing amounts of let-7, it is possible to reverse the vicious cycle. Both ways reduced levels of the cancer-promoting proteins and inhibited cell growth. Because the level of LIN28 itself goes down, the effects are reinforced and act as an ‘off’ switch to reduce cancerous behaviour.

Nick Coleman, Professor of Molecular Pathology, Cambridge University said: “We need new ways of treating patients with malignant germ cell tumours to minimise the toxic effects of chemotherapy and to improve survival rates when tumours are resistant to treatment. Having identified this ‘on/off’ switch, it will now be important to identify new drugs that can be used to keep it in the ‘off’ position.”
Dr Matthew Murray, Academic Consultant in Paediatric Oncology, Addenbrooke’s Hospital, Cambridge said: “The switch effect that we have discovered is present in all malignant germ cell tumours, whether they occur in males or females, young or old. Such a fundamental abnormality makes an excellent new target for treating these tumours.”

Susanne Owers, Director of Fundraising at Addenbrooke’s Charitable Trust, which funded this research, said: “We are delighted to have supported this study, which has identified a key protein that triggers this type of cancer. ACT funds clinical academic researchers, like Dr Murray and Prof Coleman, because they are perfectly positioned to understand the clinical problems, working closely with patients, an insight not available to all researchers. Studies like this have the potential to make a tangible difference to patients, by identifying targets for the development of new drugs which may improve survival and have less side-effects compared with standard chemotherapy treatments. By funding this research, ACT – with the help of our supporters – can make a powerful contribution, enabling ground breaking research to be performed.”


Further Information
Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 2,500+ scientific posters on ePosters
  • More Than 3,700+ scientific videos on LabTube
  • 35 community eNewsletters


Sign In



Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into TechnologyNetworks.com you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.

Related Content

New Consortium to Develop and Study Early Stage Drugs
An innovative new Consortium will act as a ‘match-making’ service between pharmaceutical companies and researchers in Cambridge with the aim of developing and studying precision medicines for some of the most globally devastating diseases.
Thursday, July 30, 2015
MRSA Contamination Found in Supermarket Pork
A survey carried out earlier this year has found the first evidence of the ‘superbug’ bacteria Methicillin-Resistant Staphylococcus Aureus (MRSA) in sausages and minced pork obtained from supermarkets in the UK.
Monday, June 22, 2015
Expression of Certain Genes Changes with the Seasons
As the seasons change, so do the expression levels of many human genes, including ones involved in immune function, according to new research.
Thursday, May 14, 2015
Blood Markers Could Help Predict Outcome Of Infant Heart Surgery
New research suggests it may be possible to predict an infant’s progress following surgery for congenital heart disease by analysing a number of important small molecules in the blood.
Friday, May 08, 2015
Poisons, Plants and Palaeolithic Hunters
Dr Valentina Borgia to develop a technique for detecting residues of deadly substances on archaeological objects.
Saturday, April 11, 2015
‘Mini-Lungs’ Grown To Aid The Study Of Cystic Fibrosis
'Mini-lungs’ have been created using stem cells derived from skin cells of patients with cystic fibrosis.
Thursday, March 19, 2015
Gene Discovery Provides Clues To How TB May Evade The Immune System
The largest genetic study of TB susceptibility to date has led to a potentially important new insight into how the pathogen manages to evade the immune system.
Tuesday, March 17, 2015
Human Genome Includes 'Foreign' Genes Not From Our Ancestors
Many animals, including humans, acquired essential ‘foreign’ genes from microorganisms co-habiting their environment in ancient times, according to research published in the open access journal Genome Biology.
Monday, March 16, 2015
Order Matters: Sequence Of Genetic Mutations Determines How Cancer Behaves
The order in which genetic mutations are acquired determines how an individual cancer behaves, according to research from the University of Cambridge, published today in the New England Journal of Medicine.
Thursday, February 12, 2015
Artificially-intelligent Robot Scientist ‘Eve’ Could Boost Search for New Drugs
Eve, an artificially-intelligent ‘robot scientist’ could make drug discovery faster and much cheaper, say researchers writing in the Royal Society journal Interface.
Wednesday, February 04, 2015
Using Genome Sequencing to Track MRSA in Under-resourced Hospitals
Whole genome sequencing of MRSA from a hospital in Asia has demonstrated patterns of transmission in a resource-limited setting, where formal screening procedures are not feasible.
Thursday, December 11, 2014
Amazing Feet Of Science: Researchers Sequence The Centipede Genome
What it lacks in genes, it certainly makes up for in legs: the genome of the humble centipede has been found to have around 15,000 genes – around 7,000 fewer than a human.
Wednesday, November 26, 2014
Molecular Event Mapping Opens Door to more in silico Tests
It is hoped that this new approach to mapping and predicting the impact of chemical compounds in the body could reduce the need for toxicity tests in animals.
Wednesday, November 19, 2014
Drugging the Undruggable
Discovery opens up possibility of slowing cancer spread.
Wednesday, November 12, 2014
Imaging The Genome
University of Cambridge study allows researchers to peer into unexplored regions of the genome and understand the role played by more than 250 genes.
Wednesday, October 29, 2014
Scientific News
Liquid Biopsies: Utilization of Circulating Biomarkers for Minimally Invasive Diagnostics Development
Market Trends in Biofluid-based Liquid Biopsies: Deploying Circulating Biomarkers in the Clinic. Enal Razvi, Ph.D., Managing Director, Select Biosciences, Inc.
Lab-on-a-Chip Offers Promise for TB and Asthma Patients
A device to mix liquids using ultrasonics is the first and most difficult component in a miniaturized system for low-cost analysis of sputum from patients with pulmonary diseases such as tuberculosis and asthma.
Intracellular Microlasers Could Allow Precise Labeling of up to a Trillion Individual Cells
MGH investigators have induced structures incorporated within individual cells to produce laser light at wavelengths that differ based on the size, shape and composition of each microlaser, allowing precise labeling of individual cells.
Real-Time Imaging of Lung Lesions During Surgery
Targeted molecular agents cause lung adenocarcinomas to fluoresce during surgery, according to pilot report.
Watching a Tumour Grow in Real-Time
Researchers from the University of Freiburg have gained new insight into the phases of breast cancer growth.
Protein Related to Long Term Traumatic Brain Injury Complications Discovered
NIH-study shows protein found at higher levels in military members who have suffered multiple TBIs.
Childhood Cancer Cells Drain Immune System’s Batteries
Cancer cells in neuroblastoma contain a molecule that breaks down a key energy source for the body’s immune cells, leaving them too physically drained to fight the disease.
Urine Proteins Point to Early-Stage Pancreatic Cancer
A combination of three proteins found at high levels in urine can accurately detect early-stage pancreatic cancer, researchers at the BCI have shown.
Researcher Discovers Trigger of Deadly Melanoma
New research sheds light on the precise trigger that causes melanoma cancer cells to transform from non-invasive cells to invasive killer agents, pinpointing the precise place in the process where "traveling" cancer turns lethal.
New Vaccine For Chlamydia to Use Synthetic Biology
Prokarium Ltd, a biotechnology company developing transformational oral vaccines, have announced new funding from SynbiCITE, the UK’s Innovation and Knowledge Centre for Synthetic Biology.
Scroll Up
Scroll Down
Skyscraper Banner

Skyscraper Banner
Go to LabTube
Go to eposters
 
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
2,500+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
3,700+ scientific videos
Close
Premium CrownJOIN TECHNOLOGY NETWORKS PREMIUM FREE!