Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New discovery explains how a common gene variant may increase cancer risks

21.03.2006


Roughly 15 percent of the population carries a gene variant that may increase the risk of developing cancer. The cause of this increased risk has been unknown until now. But now a research team at Stockholm University in Sweden can explain why.

“The variant makes the cell motor sputter and mutate, so cancer can arise,” says Associate Professor Thomas Helleday, who leads the research team at the Department of Genetics, Microbiology, and Toxicology, Stockholm University.

Even though it is easy to identify the some 15 percent of the population who have the harmful gene, which is called XRCC3 T241M, it is not meaningful to examine them since there are also other unknown factors that influence if this variant increases risk of cancer.



“On the other hand, we can possibly make use of the faulty variant to custom design new treatments in the future. And even if this doesn’t happen, it’s nevertheless important to understand the mechanisms that make certain individuals more susceptible to cancer than others,” he says.

Normally our genes have to be divided into two perfectly identical copies when a cell divides. The unfortunate variant causes a defect in the division of the genetic material (mitosis), which means that a daughter cell may get too few or too many genes. If a daughter cell does not receive a gene that prevents cancer, a so-called tumour suppressor gene, then a cancer can grow. One defence mechanism against cancer is for a cell that gets faulty genes to commit suicide (apoptosis). The defect caused by the unfortunate variant when it divides the genes is so tiny that the suicide mechanism does not detect the fault, which allows the cell to continue its growth into a cancer.

“The variant causes just a tiny defect that cannot be detected by the defence mechanisms against cancer. Just as in life, minute mistakes can lead to fatal consequences if they are not discovered,” says Thomas Helleday.

The main financiers of this research are the Swedish Pain Relief Foundation and the Swedish Cancer Society, and the findings are published in the April issue of the journal Human Molecular Genetics.

Maria Erlandsson | alfa
Further information:
http://www.eks.su.se
http://www.vr.se

More articles from Life Sciences:

nachricht Transport of molecular motors into cilia
28.03.2017 | Aarhus University

nachricht Asian dust providing key nutrients for California's giant sequoias
28.03.2017 | University of California - Riverside

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A Challenging European Research Project to Develop New Tiny Microscopes

The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.

To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Periodic ventilation keeps more pollen out than tilted-open windows

29.03.2017 | Health and Medicine

Researchers discover dust plays prominent role in nutrients of mountain forest ecoystems

29.03.2017 | Earth Sciences

OLED production facility from a single source

29.03.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>